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SWPPP 10-11-2010Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 le a) Im N4 MRADDIVER @ W41 W'Sly Chanhassen, Minnesota Storm Water Pollution Prevention Plan October 11, 2010 Property Owner: Lennar 935 East Wayzata Blvd. Wayzata, MN 55391 Consultant to Project Owner: PI NEERengineering Pioneer Engineering, P.A. 2422 Enterprise Drive Mendota Heights, Minnesota 55120 Permit ID: COOOXXXXX Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Storm Water Pollution Prevention Plan for: Lakeview Lyman Boulevard and Springfield Drive Chanhassen, MN Operator(s): Lennar Corp Kris Ronning 935 E. Wayzata Boulevard Wayzata, MN 55391 952- 249 -3031 Kris.ronning@lennar.com • SWPPP Contact(s): Lennar Corp Kris Ronning 935 E. Wayzata Boulevard Wayzata, MN 55391 952- 249 -3031 Kris.ronning @lennar.com CITY OF CHANHASSEN NOV �) 5 2010 NHANHAS,SFN PLAlNING DEPT SWPPP Preparation Date: October 11, 2010 Estimated Project Dates: Project Start Date: 5/1/ 2011 Project Completion Date 11/30/2016 ii Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Contents SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING ............................... ..............................1 1 .1 Project/Site Information ...................................................................................... ..............................1 1.2 Contact Information /Responsable Parties .......................................................... ..............................2 1.3 Nature and Sequence of Construction Activity .................................................... ..............................4 1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns ................................. ..............................4 1.5 Construction Site Estimates ................................................................................ ..............................6 1.6 Preliminary BMP Quantities ................................................................................ ..............................7 1 .7 Receiving Waters ................................................................................................ ..............................8 1.8 Site Features and Sensitive Areas to be Protected ............................................ ..............................9 1 .9 Past Land Use ................................................................................................... .............................10 1.10 Potential Sources of Pollution ............................................................................ .............................10 1.11 Endangered Species Certification ...................................................................... .............................11 1 .12 Historic Preservation .......................................................................................... .............................11 1.13 Applicable Federal, Tribal, State or Local Programs .......................................... .............................12 1 .14 Maps .................................................................................................................. .............................12 1.15 EPA Effluent Guidelines .................................................................................... .............................13 SECTION 2: EROSION AND SEDIMENT CONTROL BMPS ........................................... .............................14 2.1 Minimize Disturbed Area and Protect Natural Features and Soil ....................... .............................14 2 .2 Phase Construction Activity ............................................................................... .............................15 2.3 Support Facility Activities ................................................................................... .............................22 2.4 • 10 or 5 Acre Temporary Sediment Basins ......................................................... .............................23 2.5 Control Storm water Flowing onto and through the Project ................................ .............................23 2 .6 Stabilize Soils .................................................................................................... .............................23 2 .7 Protect Slopes ................................................................................................... .............................25 2.8 Protect Storm Drain Inlets .................................................................................. .............................25 2.9 Establish Perimeter Controls and Sediment Barriers ......................................... .............................26 2 .10 Retain Sediment On- Site ................................................................................... .............................28 2.11 Establish Stabilized Construction Exits .............................................................. .............................28 2 .11 Dewatering ........................................................................................................ .............................29 2 .11 Dust Control ....................................................................................................... .............................29 SECTION 3: GOOD HOUSEKEEPING BMPS .................................................................. .............................30 3.1 Material Handling and Waste Management ....................................................... .............................30 3.2 Establish Proper Building Material Staging Areas .............................................. .............................31 3.3 Designate Washout Areas ................................................................................. .............................32 3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices ......... .............................32 3.5 Control Equipment/Vehicle Washing ................................................................. .............................33 3.6 Spill Prevention and Control Plan ...................................................................... .............................33 3 .7 Planning BMPs .................................................................................................. .............................34 3.8 Allowable Non -Storm water Discharge Management ........................................ .............................35 SECTION 4: SELECTING POST- CONSTRUCTION BMPs .............................................. .............................37 SECTION5: INSPECTIONS .............................................................................................. .............................39 5 .1 Inspections ........................................................................................................ .............................39 • 5.2 Delegation of Authority ...................................................................................... .............................40 iii Draft Stormwater Pollution Prevention Plan ( SWPPP) Lyman Site - October 11, 2010 5.3 Corrective Action Log ........................................................................................ .............................40 SECTION 6: RECORDKEEPING AND TRAINING ........................................................... .............................41 6.1 Recordkeeping .................................................................................................. .............................41 6.2 Log of Changes to the SWPPP .......................................................................... .............................42 6 .3 Training .............................................................................................................. .............................42 SECTION 7: FINAL STABILIZATION ............................................................................... .............................43 SECTION 8: CERTIFICATION AND NOTIFICATION ....................................................... .............................45 SWPPPAPPENDICES ...................................................................................................... .............................46 Appendix A — General Location Map Appendix B — Site Maps Appendix C — Construction General Permit Appendix D — NOI, Acknowledgement Letter from MPCA and Notice of Termination Appendix E — Reporting Spills and Leaks — MPCA Handout Appendix F — SWPPP Amendment Log Appendix G — Subcontractor Certifications /Agreements Appendix H — Grading and Stabilization Activities Log Appendix I — Training Log Appendix J — Delegation of Authority Form Appendix K — Additional Information For all Inspection Reports, Corrective Action Logs, Grading and Stabilization Logs and Rainfall Log, Invoices, and tool box talk trainings consult the separate Inspection Binder located near the SWPPP Binder or consult the site superintendant/supervisor. r: iv Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING 1.1 Project/Site Information Project/Site Name: LAKEVIEW Project Street/Location: North of the Intersection of Lyman Boulevard and Springfiend Drive (See Appendix A) City: Chanhassen State: MN ZIP Code: 55317 County or Similar Subdivision: Carver Latitude/Longitude (Use one of three possible formats, and specify method) Latitude: 1. _ _ ° _ _' _ _" N (degrees, minutes, seconds) 2. _ _ ° _' N (degrees, minutes, decimal) 3.44.843379 ° N (decimal) • Method for determining latitude /longitude: ❑ USGS topographic map (specify scale: ❑ Other (please specify): Longitude: 1. _ _ ° _ _' _ _" W (degrees, minutes, seconds) 2. _ _ ° _ _ _ 'W (degrees, minutes, decimal) 3. - 93.52867 ° W (decimal) ❑ EPA Web site ® GPS Is the project located in Indian country? ❑ Yes ® No If yes, name of Reservation, or if not part of a Reservation, indicate "not applicable." Not Applicable Is this project considered a federal facility? ❑ Yes ® No Is this project considered a State permitted facility? ® Yes ❑ No See Appendix H for up to date information on open permits, closed permits, and areas that have been transferred. *(This is the unique identifying number assigned to your project by your permitting authority after you have applied for coverage under the appropriate National Pollutant Discharge Elimination System (NPDES) construction general permit.) • EPA SWPPP Template, Version 1. 1, September 17, 2007 1 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 1.2 Contact Information /Responsable Parties. C� Primary Operator: Insert area of control: Insert Company or Organization Name: Insert area of control Insert Name: Insert Address: Insert City, State, Zip Code: Insert Telephone Number: Insert Fax/Email: Secondary Operator: Repeat as Necessary Insert area of control (if more than one subcontractor at site): Insert Company or Organization Name: Insert area of control Insert Name: Insert Address: Insert City, State, Zip Code: Insert Telephone Number: Insert Fax/Email: Operator: Repeat as Necessary Insert area of control (if more than one subcontractor at site): Insert Company or Organization Name: Insert area of control Insert Name: Insert Address: Insert City, State, Zip Code: Insert Telephone Number: Insert Fax/Email: Project Manager(s) or Site Supervisor(s): Insert area of control (if more than one subcontractor at site): Lennar Corporation Insert area of control Joe Jablonski 935 East Wayzata Boulevard Wayzata, MN 55391 952- 249 -3014 joe.jablonski@lennar.com EPA SWPPP Template, Version 1.1, September 17, 2007 2 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • • SWPPP Contact(s): Repeat as Necessary Insert area of control (if more than one subcontractor at site): Lennar Corp Insert area of control Kris Ronning Insert area of control 935 East Wayzata Boulevard Wayzata, MN 55391 612 - 490 -0976 Kris.ronninga,lennar.com This SWPPP was Prepared by: Insert area of control: Pioneer Engineering, P.A. Insert area of control Nicholas Polta Insert area of control 2422 Enterprise Drive Mendota Heights, Minnesota 55120 651- 681 -1914 Lipolta@pioneereng.com BMP Subcontractor(s): Repeat as Necessary Insert area of control (if more than one subcontractor at site): Insert Company or Organization Name: Insert area of control Insert Name: Insert area of control Insert Address: Insert City, State, Zip Code: Insert Telephone Number: Insert Fax/Email: Emergency 24 -Hour Contact: Insert area of control: Lennar Corp Insert area of control Kris Ronning Insert area of control 612 - 490 -0976 Other Permittee Outside Lennar Control: Insert area of control: Repeat as Necessary Insert Company or Organization Name: Insert area of control Insert Name: Insert Permit Number: EPA SWPPP Template, Version 1. 1, September 17, 2007 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 1.3 Nature and Sequence of Construction Activity Describe the general scope of the work for the project, major phases of construction, etc: The project construction will consist of, but is not limited to, installation of sediment control devices, topsoil stripping and stockpiling, mass grading, utility installation, storm sewer installation, road construction, basement excavation, foundation construction, home construction, driveway installation, regrading of the lot, and restoring vegetation on the lot. The land development activity will take place over several phases as the market conditions allow. The proposed home building schedule for lot construction will take place on a lot by lot basis as homes are sold which is market condition dependant. : 2011— 33 single family home sites 2012 — 33 single family home sites The nature and sequence of construction activity. For the Construction Managers, they use an online scheduling system (BuildPro) for an up to date schedule on home construction please contact the construction manager (contact information on the front page of this SWPPP) The construction schedule for the land development activities will be located in Appendix H, the grading and stabilization log. For an up to date schedule on any land development activities • please call the land development manager located on the front Page of this SWPPP ® Residential ❑ Commercial ❑ Industrial ❑ Road Construction ❑ Linear Utility ❑ Other (please specify): Estimated Project Start Date: 5/1/2010 Estimated Project Completion Date: 11/30/2015 1.4 Soils, S lopes, Vegetation, and Current Drainage Patterns 1.4.1 Existing Site The Site is currently an open field with high grasses. Several stands of trees ring the low lying wetland and a surface channel, constructed with STH 212 western edge, turning midway in the Site to enter a large wetland in the south eastern corner. An old storage structure is located on the north boundary and is surrounded with abandoned farming machinery and construction debris. 1.4.2 Soil type(s): According to the soil survey of Carver County, Minnesota, the site is mappaed with two major groups; the Kilkenny- Lester association and Rasset- Lester - Kilkenny complex. Both of these groups are classified as clay according to the Unified Soil Classification System and are • associated with moraines and the Minnesota River Flood Plain. See Appendix B for locations of individual soil types. EPA SWPPP Template, Version 1. 1, September 17, 2007 4 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 1.4.3 Slopes There are four soil types within the project area that contain potentially steep slopes; three are designated as Highly Erodible Land (HEL). See Table 1. TABLE 1 HIGHLY ERODIBLE SOILS Map Symbol Soil Name Slope (Percent) Highly Erodible Land Classification (HEL) 155C Chetek sandy loam 8 -15 Highly Erodible Land 454C Mahtomedi loamy sand 8 -15 Not Highly Erodible Land 895C Kingsley - Mahtomedi- Spencer complex 8 -15 Highly Erodible Land 896E Kingsley - Mahtomedi complex 8 -15 Highly Erodible Land According to the Natural Resource Conservation Service (MRCS), highly erodible land (HEL) and potentially highly erodible land (PHEL) are areas of land that have a high potential for erosion. These classifications are based on soil type and steep slope characteristics. • The EAW Guidelines (Minnesota environmental Quality Board 2000) define steep slopes as those of 12 percent or more. Steep slopes cover approximately 85% of the site. Some areas of highly erodible soils will be graded during construction of the proposed development. Nearly all newly graded slopes after project development will be 4:1 or more gradual; 3:1 slopes may be included in some small areas. Erosion and sedimentation of all exposed soils within the project corridor will be minimized by utilizing the appropriate best management practices (BMPs) during construction. Implementation of BMPs during final construction greatly reduces the construction- related sedimentation and helps to control erosion and runoff. Ditches, swales, dikes, siltation fences, erosion dissipaters, fiber blankets, check dams, bale checks, sedimentation basins, and temporary seeding will be utilized as temporary erosion control measures during construction grading. Temporary and permanent erosion control plans will be identified in the final site grading and construction plans for each stage as required by the National Pollutant Discharge Elimination System (NPDES) permitting for construction sites and in accordance with the City of Chanhassen and the watershed regulators' erosion/sediment control standards. Erosion control measures will be in place and maintained throughout the entire construction period. Removal of erosion measures will not occur until all disturbed areas have been stabilized. 1.4.4 Drainage Patterns There are two major drainage areas and one minor area on the site The first major drainage area covers approximately 30.3 acres and drains to a large, 8 acres wetland (DNR -213 W), in the south east corner of the Site. The second drainage area, 10.0 acres, drains to a channel that drains the • storm water basins from the STH 212 and 101 intersection along the west property line. The EPA SWPPP Template, Version 1. 1, September 17, 2007 5 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 channel drains to wetland 213W through a large 48" pipe. There is a small, less then one acre, • area that drains to STH 212 through a culvert under the sound wall in the north central portion of the site . The existing and proposed drainage maps can be found in Appendix B. 1.4.5 Vegetation: Table 2 provides information on the estimated acreage of land cover before and after project development. The site consists of what appears to be an abandoned farmstead softwood trees growing in the lowland areas. The predominant existing land cover types are wetlands; woods and brush/grassland. TABLE 2 COVER TYPES 1.5 Construction Site Estimates The following are estimates of the construction site. Total project area: 48.43 acres Total Area to be disturbed 28.86 acres Percentage impervious area before construction: .001% Runoff coefficient before construction: .25 Total % impervious after construction 24.20% Runoff coefficient after construction .48 EPA SWPPP Template, Version 1.1, September 17, 2007 6 Before Acres After Acres Types 1 -8 wetlands 8.08 8.08 Wooded/forest 11.48 6.08 Brush 14.46 4.93 Grassland 14.33 21.21 Impervious Surface Roads, buildings, drives 0.08 11.72 Ponds 0 0.88 1.5 Construction Site Estimates The following are estimates of the construction site. Total project area: 48.43 acres Total Area to be disturbed 28.86 acres Percentage impervious area before construction: .001% Runoff coefficient before construction: .25 Total % impervious after construction 24.20% Runoff coefficient after construction .48 EPA SWPPP Template, Version 1.1, September 17, 2007 6 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 1.6 Preliminary BMP Quantities r1 L_J • The following table is a estimated tabulation of quantities for the BMP's proposed for the Site. ITEM ITEM DESCRIPTION UNIT ESTIMATED QUANTITY 1 Construction Limit Staking LF 2 Rock Construction Entrance EA 3 Rock Construction Maintenance EA 4 Perimeter Erosion Control Fence LT 5 Maintenance of Perimeter Erosion Control YR 6 Finished Grade Erosion Control LF 7 Maintenance of Finished Grade Erosion Control YR 6 BIOROLL Ditch Check EA 7 Rock Berm EA 8 Temporary Sediment Basin Woutlet EA 10 Maintenance of Temporary Sediment Basin & Outlet YR 11 Street Sweeping and Vacuuming YR 12 Storm Drain Inlet Protection w /maintenance EA 13 Erosion Control Blanket YD 13 Temporary Seed and Mulch AC 14 Mobilize for temp Seeding EA 15 Permanent Seed and Mulch AC 16 Maintain Seed and Mulch AC 17 Lot Construction Erosion Control EA 18 Vehicle and Equipment Cleaning LS 19 Vehicle and Equipment Fueling LS 20 Vehicle and Equipment Maintenance LS 21 Spill Prevention and Control LS 22 Rip Rap CY EPA SWPPP Template, Version 1. 1, September 17, 2007 7 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 1.7 Receiving Waters Description of receiving waters: The existing drainage pattern of the site will be maintained as best as possible for the proposed development. The drainage for the site will flow to the existing wetland on site; into Lake Riley. Lake Riley discharges into Riley Creek down to the Minnesota River. Description of storm sewer systems: The storm sewer systems located throughout the site are typical of a neighborhood setting. Storm water runoff is directed from the streets and backyards and routed to three proposed storm water quality basins. These basins are designed to the MPCA and City of Chanhassen's design standards. The basins outlet into the onsite wetland. Additional discussion of the storm water design can be found in Section 4 the layout of the storm water system can be found in Appendix B. Description of impaired waters or waters subject to TMDLs: A special and impaired waters search was completed using the MPCA search engine ( http: / /pca- is04.pca.state.mn.us /website /storm water /csw /viewer.htm on 10 /10 /10. Based on that review, this project has no discharge point within one mile of, and flows to, a special water listed in Appendix A, Part B of the NPDES Construction Site General Permit, but does have a discharge is point within one mile of, and flows to, Lake Riley which is a water listed as impaired under Section 303(D) of the Federal Clean Water Act for mercury and nutrients. Waterbody ID 10- 0002 -00 07020012 -511 Name of Waterbody Lake Riley Riley Creek Type Lake Stream Special Water No No Impaired Water Yes Yes Pollutants Hg, Nutrient Turbidity Approved TMDL No No A map and search engine results are attached (See Appendix B, Special/Impaired Waters Map and Search Engine Results Additional impaired water was found within the 1 mile radius of the site but no storm water from tows to this water body. It is provided here for reference: Waterbody ID 10- 0013 -00 Name of Waterbody Lake Susan Type Lake Special Water No Impaired Water Yes Pollutants Hg, and nutrients Approved TMDL Yes for H • EPA SWPPP Template, Version 1. 1, September 17, 2007 8 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Due to the discharge to an impaired water within one(1) mile, the site must comply with additional BMP's listed in Appendix A. C.1 and C.2.of the Permit stating: C.1. During construction. a. All exposed soil areas must be stabilized as soon as possible to limit soil erosion but in no case later than seven (7) days after the construction activity in that portion of the site has temporarily or permanently ceased. b. Temporary sediment basin requirements described in Part III.B.1 -5 must be used for common drainage locations that serve an area with five (5) or more acres disturbed at one time. C.2. Post construction. The water quality volume that must be treated by the project's permanent storm water management system described in Part III.C. shall be one (1) inch of runoff from the new impervious surfaces created by the project. Where site conditions allow, at least %2 inch of the water quality volume must be infiltrated. See Part III.C.2 for more information on infiltration design and appropriate site conditions. If it is determined that site conditions are not appropriate for infiltration (e.g. lack of 3 ft. of separation to seasonally saturated ground water, proximity to bedrock, • contaminated soils) the reasons should be documented in the SWPPP for the project. Infiltration is not required in Hydrologic Soil Group D soils. 1.8 Site Features and Sensitive Areas to be Protected Description of Site Features and Sensitive Areas to be protected: There are three sensitive area of the Site that will require additional protection; DNR Wetland 213W, the MNDOT drainage channel and stands of trees along the western property. The areas are located on the Grading and Erosion Control Plans located in Appendix B. Additional offsite areas that require additional protection in the form of increased storm water management are Lake Riley, Riley Creek and the Minnesota River. Describe measures to protect these features: Temporary and permanent erosion and sediment control BMP's will be used to protect sensitive areas both on and off site. The temporary BMP's include, but are not limited to; staking of disturbed areas, silt fence, rock entrance pads, inlet protection devices, temporary seed and hydromulch and/or temporary straw mulch cover with or without seed. Where home sites are adjacent to the ponds and/or wetlands; silt fence should be used instead of biorolls or mulch berms for sediment control. All exposed • soil areas must be stabilized as soon as possible to limit soil erosion but in no case later than EPA SWPPP Template, Version 1. 1, September 17, 2007 9 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 seven (7) days after the construction activity in that portion of the site has temporarily or permanently ceased. Temporary sediment basin requirements will be used for common drainage locations that serve an area with five (5) or more acres disturbed at one time. The permanent BMP's consist primarily of the final soil stabilization; stable storm water conveyance system; stabilized storm sewer outfalls, permanent wetland buffers, storm water quality basins, including skimming outlet contro. The wetlands and stands of mature trees will be protected before construction with erosion control fence. This fence will filter sediment laden water as well as provide a visual `do not disturb' line for the crews working in the field. No work will be done within the fence line without extra precautions taken to insure the wetlands are not disturbed. The fence line will be placed at the wetland buffer line whenever practicable areas that are slated for disturbance within the buffer line will be restored with seed and mulch within 7 days of disturbance. 1.9 Past Land Use A review of the historic aerial photo's at the University of Minnesota's John R. Borchert Map Library ( http: / /map.lib.umn.edu/mhapo/) indicate the site has been a farmstead since at least 1937, the last year available for review. From 1937 up to the 1980' the site was substantially • devoid of trees and the Site was still an active farmstead with a house and several ancillary farming structures. Sometime in the 1990's the land was no longer actively tilled but was still a farmstead. In the early to mid 2000's STH 212 was installed on the north property line and the farmstead was removed with the exception of the one storage structure on site today. 1.10 Potential Sources of Pollution • Potential sources of sediment to storm water runoff Construction activities are additional potential sources pollution: sediment from mass grading activities, utility installation, road construction, and single family homes construction. Vegetation will be stripped to allow for grading activities, utility installation, and the construction of the homes; which will result in the temporary leaving of bare soils which are a potential source of sediment to storm water runoff. Additionally, stockpiles, tracking of soil and landscaping activities pose as a source of sediment. Potential pollutants and sources, other than sediment, to storm water runoff. Potential Pollutant Location Control Measure Antifreeze Random leaks- various Trained personnel EPA SWPPP Template, Version 1.1, September 17, 2007 10 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Diesel Fuel Approved storage areas on site. Secondary containment ,Oil absorbing diapers, trained p ersonnel Fertilizer Areas to be sodded Managed application, certified installers, not stored on -site Gasoline Approved storage areas on site Secondary containment, Oil absorbing diapers, trained p ersonnel Glue /Adhesives Pipe joints Containers stored in job trailer or removed from jobsite at end of day, Empty containers disposed in dumpster or removed from jobsite and dis osed properl Hydraulic oil /fluids Random leaks - various Properly stored, Oil absorbing diapers, trained personnel Paints Various equipment Kept with contractor, Contractor Responsible Grease Equipment maintenance Kept with contractor, disposed empty containers properly, Contractor responsibili Sanitary/Septic Waste Various — to be determined on Service provider to secure units site from tipping over. Soil Amendments Seeded areas Application rates according to specification, storage indoors or kept with contractor, no outdoor storage allowed. Landscaping Materials Kept with landscape contractor. Contractor Responsible. Solid Waste/Trash Appropriate Containers needed Solid Waste BMP's Contractor Responsible. Concrete Wash Out Basement Construction Contractor is responsible for complying with NPDES permit. 1.11 Endangered Species Certification Are endangered or threatened species and critical habitats on or near the project area? ❑ Yes ® No Describe how this determination was made: 1.12 Historic Preservation Are there any historic sites on or near the construction site? ❑ Yes ® No EPA SWPPP Template, Version 1.1, September 17, 2007 11 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Describe how this determination was made: 1.13 Applicable Federal, Tribal, State or Local Programs Are there any Applicable Federal, Tribal, State or Local Programs on or near the construction site that apply? ® Yes ❑ No Describe how this determination was made: The MPCA website was checked for MS4 status (http: / /www.pca.state.mn.us /publications /wq- strm4- 75.pdf) and found that Chanhassen is a MS4 designated community. The City of Chanhassen website (http: / /www.ci.Chanhassen.mn.us /)was checked for ordinances pertaining to NPDES or erosion and sediment control and storm water compliance and rules or regulations. The following Sections of the City Code: • Grading (including retaining walls): Section 18 -40 • Surface Water Management: Chapter 19, Article VII • Shoreland Management District: Chapter 20, Article VII • Wetland Protection: Chapter 20, Article VII • As well as the: • City of Chanhassen Non Degradation Assessment, 2007(DRAFT) hqp://www.ci.chanhassen.mn.us/serv/nresourc/nondeg.html • City of Chanhassen Detail Plates, 2010 hqp: // www.ci.chanhassen.mn.us /sery /en ing eer /specplates20lO.html City of Chanhassen Second Generation Surface Water Management Plan ,2006 hqp: / /www.ci.chanhassen.mm.us /sery /cin /swmp /ad.htm contain rules and regulations that pertain to erosion and sediment control and or storm water compliance. These rules were followed in the creation of this SWPPP. When discrepancies resulted between the rules reviewed the more stringent of the City vs. State rules shall apply. Excerpts of these documents are included in Appendix C. The complete Storm water Management Plan and Standard Detail Plates and Non Degradation Plan can be found at the City of Chanhassen's website 1.14 Maps • See Appendix A and B for map information. EPA SWPPP Template, Version 1. 1, September 17, 2007 12 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 r � �J 1.15 EPA Effluent Guidelines .7 The MPCA will need to comply with new monitoring requirements in the rule when the Construction Storm water Permit is reissued in 2013. At a minimum, the state permit must be as stringent as the new federal regulations. In the interim, Lennar should comply with the existing Construction Storm water Permit. EPA SWPPP Template, Version 1. 1, September 17, 2007 13 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 SECTION 2: EROSION AND SEDIMENT CONTROL BMPS 2.1 Minimize Disturbed Area and Protect Natural Features and Soil During mass grading natural and existing vegetation will be preserved as much as possible on site. The principal advantage of preserving natural vegetation is protecting desirable trees, vines, bushes, and grasses from damage during project development. Vegetation provides erosion control, storm water detention, biofiltration, and aesthetic values to a site during and after mass grading activities. During mass grading all exposed soil areas will be stabilized as soon as possible to limit soil erosion but in no case later than 7 days after the grading activity in that portion of the site has temporarily or permanently ceased. In some instances this may require stabilization to occur more than once during mass grading. The grading will be phased to minimize disturbed areas, with approximately ten acres actively graded at one time. These will be rolling phases with ten acres opened initially, as a five acre area is completed and temp seeded another 5 acres will be opened. The locations of the phases and the timing of the seeding will be coordinated with the grading operator before the start of grading activities. The phases will be adjusted as site conditions dictate. In the event that more then ten acres are necessary to be disturbed at one time additional BMP's will be contemplated in the form of additional diversions away from disturbed areas or temporary sediment basins until such time as the disturbed area can be reduced back to ten acres. Natural features will be protected by both installed practices and natural areas. Erosion control fence will provide a visual do not disturb reminder to the grading contractor and will be placed far enough away from the natural feature to be protected so that native vegetation can serve as and additional sediment trap. This practice will be used around the wetland and the MNDOT drainage channel as well as large stands of tree that re to be preserved. Single family lots will be disturbed on a lot by lot basis as homes are constructed. Typically the entire lot will be disturbed as they are finished graded for the home. Areas not to be disturbed will be designated typically through the use of silt fence. During the initial excavation process, topsoil will be preserved by stockpiling with sediment control devices installed down gradient. See the attached standard typical lot detail which illustrates BMP's and placements of the controls for a typical lot in Appendix B. Home construction and disturbance of soils will only take place immediately prior to further home construction activity scheduled. All disturbed areas shall have temporary protection or permanent cover over exposed soil areas if not being actively graded within 7 days of work temporary or permanently stopping. Temporary stockpiles without significant silt, clay, or organic components (e.g. clean aggregate stockpiles, demolition concrete stockpiles, sand stockpiles) and the constructed base components • of roads, parking lots, and similar surfaces are exempt from this requirement but will have effective sediment controls in place, and will not be placed in surface waters, including storm EPA SWPPP Template, Version 1. 1, September 17, 2007 14 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • water conveyances such as curb and gutter systems, or conduits and ditches unless there is a bypass in place for the storm water. 2.2 Phase Construction Activity • This project will consist of both mass grading activities and home construction, below is the sequence of construction activities for Land and Home construction. Follow the sequence of activities below for major construction activities and site - specific BMP installation. Phase I (Pre- construction) BMPs that apply at all times from the start of clearing and grubbing to the end of vertical construction and final stabilization. Include Initial Installation, Community Set -up and Good House Keeping. Typically 1 month 1. Cleaning, washing or maintenance of construction equipment or vehicles is not allowed on site. SWPPP Spill Prevention and Control. 2. Building materials will be stored on site throughout construction. Properly store construction materials in accordance with Section 3. 3. Implement material use practice. 4. Prevent and manage spills of stored substances per SWPPP Section 3.6 Shill Prevention and Control Plan. EPA SWPPP Template, Version 1.1, September 17, 2007 15 Sequence of Land Construction Activi 1 Phase I (Pre - construction) Initial Installation Community set -u Good house keeping 2 Phase II (During Construction Clear and Grub Mass Grading Underground Utilities &Drainage Structures Site Concrete curb, gutter and drives Paving/Street work Small Utilities Site Landscaping Vertical Construction 3 Phase III (Post Construction Final Stabilization Follow the sequence of activities below for major construction activities and site - specific BMP installation. Phase I (Pre- construction) BMPs that apply at all times from the start of clearing and grubbing to the end of vertical construction and final stabilization. Include Initial Installation, Community Set -up and Good House Keeping. Typically 1 month 1. Cleaning, washing or maintenance of construction equipment or vehicles is not allowed on site. SWPPP Spill Prevention and Control. 2. Building materials will be stored on site throughout construction. Properly store construction materials in accordance with Section 3. 3. Implement material use practice. 4. Prevent and manage spills of stored substances per SWPPP Section 3.6 Shill Prevention and Control Plan. EPA SWPPP Template, Version 1.1, September 17, 2007 15 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 5. In the event of a spill, including but not limited to, herbicides, fertilizers, chemicals of any type, soil stabilizers, soil binders, diesel, gasoline, motor oil or lubricant, curing compounds, paints, stains, or sanitary waste, implement clean up measures as indicated in SWPPP Section 3.6 Spill Prevention and Control Plan. Clean up all leaked material or spills immediately. 6. Keep a spill kit on site during construction per SWPPP Section 1.8 Potential Sources of Pollution. 7. When water is needed for construction purposes and controlling dust, watering trucks will be used on site. Prevent nuisance water by turning off at the source or using nozzle when not in use. 8. Install stabilized exits at equipment and material storage areas where materials will be stored on disturbed soils. Rock entrances shall be installed per SWPPP Section 2.9 Establish Stabilized Construction Exits. 9. All temporary erosion and sediment controls are to remain in place until the up gradient areas are permanently stabilized 10. Conduct regular storm water tailgate meetings with the workforce when the project is staffed and work is underway 11. Avoid and control illicit discharges. Phase II (During Construction) • C Clearing, Grubbing, Sediment Basin EPA SWPPP Template, Version 1. 1, September 17, 2007 16 1. Surveyor will stake property lines at perimeter. 2. Construct stabilized construction exits for the site. Rock entrances will be 50 feet long and 20 feet wide with rock depth being a minimum of 6 inches. (Section 2.9 and detail in Appendix B) 3. Begin Demolition of buildings and removal of existing bituminous per Demolition Plan (Appendix B) 4. Install orange colored plastic mesh fencing or orange erosion control fence to protect areas that are not to be disturbed and mark trees to be Typically 1 preserved in areas identified on the site map outside of fenced areas. month 5. Establish and maintain material and equipment storage areas away from water courses and storm drain inlets. 6. Clear areas as needed for installation of silt fence per the grading and Erosion Control Plan ( Appendix B) 7. Maintain all area within wetland buffers per the Grading and Erosion Control Plans (Appendix B) 8. Install perimeter silt fences at down gradient locations per SWPPP site map. Silt Fence will be machine sliced with woven monofilament fabric. Fabric will be fastened on -site. 9. Establish hazardous materials storage area within the combined staging area. 10. Implement Vehicle and Equipment Cleaning, Vehicle and Equipment Fueling; Material Delivery and Storage; Spill Prevention and Control; Solid Waste Management; Per SWPPP Section 3.4 Establish Proper EPA SWPPP Template, Version 1. 1, September 17, 2007 16 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • • n U EPA SWPPP Template, Version 1. 1, September 17, 2007 17 Equipment/Vehicle Fueling and Maintenance Practices. 11. Evaluate run on and divert as necessary 12. Begin clearing and grubbing, and installation of access road for sediment basin 13. Construct sediment basin and install velocity dissipation devices at outfall(s ) as soon as practicable. Mass Grading / Site Grading 1. Discuss storm water management at the pre job meeting with trades and representative from the local agency. During discussion identify protected wetland, woodlands and natural areas. 2. Surveyor will install grade stakes. 3. Implement Vehicle and Equipment Cleaning, Vehicle and Equipment Fueling; Material Delivery and Storage; Spill Prevention and Control; Solid Waste Management; Hazardous Waste Management; per SWPPP Section 3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices. Typically 2- 4. Establish and maintain material and equipment storage areas away from 3 months water courses and storm drain inlets. 5. Avoid clearing and grading operations during inclement weather, schedule construction accordingly. 6. Begin grading operations 7. Maintain drainage to temporary sediment basins during construction. 8. Implement Stockpile management BMPs. 9. Install temporary stabilization per site plan on disturbed areas where no work will commence within 7 days. 10. Install permanent stabilization within 7 days after final grades are finished. Infrastructure (utilities, curb and gutter, sidewalks, drives etc.) 1. Store construction equipment in a designated area 2. Establish hazardous materials storage area with the combined staging area 3. Implement Good Housekeeping BMP's per Section 3, including: Vehicle and Equipment Cleaning; Vehicle and Equipment Fueling; Typically 2- Material Delivery and Storage; Material Use; Spill Prevention and 3 months control; Solid Waste Management; Hazardous Waste Management; and Vehicle Maintenance Practices. 4. Implement Stockpile management BMPs. 5. Avoid excavation of trenches and stockpiling of material during inclement weather, schedule construction accordingly. 6. Install utilities; sanitary sewers, watermains, and storm sewer. 7. Prepare pavement sub grade and install gutters, curbs, storm drain inlets, sewer manholes 8. Install temporary stabilization per site plan on disturbed areas where no EPA SWPPP Template, Version 1. 1, September 17, 2007 17 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • • EPA SWPPP Template, Version 1. 1, September 17, 2007 18 work will commence within 7 days. 9. Install permanent stabilization within 7 days after final grades are finished. 10. Install inlet protection once inlets installed and active per SWPPP Section 2.6 Protect Storm Drain Inlets. Paving Operations 1. Store construction equipment in a designated area 2. Establish hazardous materials storage area with the combined staging area 3. Implement Good Housekeeping BMP's per Section 3, including: Vehicle and Equipment Cleaning; Vehicle and Equipment Fueling; Material Delivery and Storage; Material Use; Spill Prevention and control; Solid Waste Management; Hazardous Waste Management; and Typically 2- Vehicle Maintenance Practices during Paving Operations. 3 months 4. Coordinate removal of stabilized construction entrance once ready to pave street 5. Pave streets 6. At conclusion of paving and small utilities operations install silt fence as back of curb. 7. Install temporary stabilization per site plan on disturbed areas where no work will commence within 7 days. 8. Install permanent stabilization within 7 days after final grades are finished. 9. Install inlet protection once inlets installed and active per SWPPP Section 2.6 Protect Storm Drain Inlets Landscape and Irrigation 1. Store construction equipment in a designated area 2. Establish hazardous materials storage area with the combined staging area. 3. Implement Good Housekeeping BMP's per Section 3, including: Vehicle and Equipment Cleaning; Vehicle and Equipment Fueling; Typically 2- Material Delivery and Storage; Material Use; Spill Prevention and 3 months control; Solid Waste Management; Hazardous Waste Management; and Vehicle Maintenance Practices during Paving Operations. 4. Maintain paved areas with street sweeping as needed. 5. Stockpile Management. Stockpiles will be enclosed with silt fence and temporary stabilized within seven days of inactivity. 6. Clear areas to be landscaped of temporary erosion controls 7. Verify installation of temp sediment controls and inlet protection 8. Install Jute matting on slopes prior to planting if applicable. 9. Install landscape and irrigation in common areas. EPA SWPPP Template, Version 1. 1, September 17, 2007 18 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 • Most construction activities will consist of home construction on individual lots. Portions of the lot will be temporary or permanently stabilized to the maximum extent possible following final grade once the home is constructed as applicable according to the timeframes in the Construction General Permit. Possible BMP's utilized in phased construction activity include temporary seed and hydromulch and/or temporary straw cover with or without seed. Generally the phasing of each lot will include a phasing sequence of- Follow the sequence of activities below for major construction activities and site - specific BMP installation Phase I (Pre- construction Planning) • 1. Control dust by watering if necessary. 2. Cleaning, washing or maintenance of construction equipment or vehicles Typically 1 is not allowed on site. TO 3. Determine the locations of staging areas. Building materials will be 2 months stored on site throughout construction. Properly store construction materials in designated staging areas. 4. Prevent and manage spills of stored substances per Section 1.8 of SWPPP. (Potential Sources of Pollution BMP). In the event of a spill, including but not limited to, herbicides, fertilizers, chemicals of any type, soil stabilizers, soil binders, diesel, izasoline, motor oil or lubricant, EPA SWPPP Template, Version 1. 1, September 17, 2007 19 Sequence of Homebuilding Construction Activi 1 Phase I (Pre - construction Initial Installation, Community set-u Good house keeping 2 Phase II (Protection of sensitive areas and construction of post construction BMPs� 3 Phase III (During Construction All BMP's not associated with Active Home sites All BMP's associated with Active Home sites (Relate to schedule and home site typical drawings BMP's Phasing I Home Start Foundation, SSF, drain, backfill, flatwork, rough grade BMP's Phasing II Frame, Roof Inspections Sheetrock, texture, trim, cabinets Paint, brick, tile BMP's Phasing III Carpet, sod Quality Walk, Sign -off 4 Phase IV (Post Construction1 Final Stabilization Follow the sequence of activities below for major construction activities and site - specific BMP installation Phase I (Pre- construction Planning) • 1. Control dust by watering if necessary. 2. Cleaning, washing or maintenance of construction equipment or vehicles Typically 1 is not allowed on site. TO 3. Determine the locations of staging areas. Building materials will be 2 months stored on site throughout construction. Properly store construction materials in designated staging areas. 4. Prevent and manage spills of stored substances per Section 1.8 of SWPPP. (Potential Sources of Pollution BMP). In the event of a spill, including but not limited to, herbicides, fertilizers, chemicals of any type, soil stabilizers, soil binders, diesel, izasoline, motor oil or lubricant, EPA SWPPP Template, Version 1. 1, September 17, 2007 19 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • L • EPA SWPPP Template, Version 1. 1, September 17, 2007 off curing compounds, paints, stains, or sanitary waste, implement clean up measures as indicated in Section 1.8 of SWPPP. Clean up all leaked material or spills immediately. Minnesota has a five - gallon minimum quantity for reporting petroleum spills. Spills of all other chemicals or materials, any quantity is reportable. If in doubt, report to the Minnesota Duty Officer. 651- 296 -6300. See also Section 3.6 of the SWPPP. 5. Keep a spill kit on site during construction. (The Construction Manager has the spill kits and will designate where they are kept on site.) 6. Install stabilized entrances at equipment and material storage areas where materials will be stored on disturbed soils. Rock entrances shall be installed per SWPPP Section 2.9 7. All temporary erosion and sediment controls are to remain in place until the up gradient areas are permanently stabilized 8. Conduct regular storm water tailgate meetings with the workforce when the project is staffed and work is underway 9. At the onset of clearing operations and until the conclusion of vertical construction and final stabilization, install and maintain temporary sanitary facilities (porta- potties) for workforce on dirt and away from water courses and inlets. Phase II (How to protect sensitive areas and construction of post construction BMPs) : Start Date 1. Install perimeter protection on all do not disturb areas including tree TO protection. Final 2. Maintain a vegetative buffer around wetlands, storm water basins and Stabilization infiltration areas. 3. Maintain temporary vegetation on site to the maximum extent practicable. 4. If possible perform construction during dry months to limit exposure Phase III (Durine Construction) All BMP's not associated with Active Home sites. 1. Engineers will stake property lines at perimeter 2. Construct stabilized construction entrances for the site. Rock entrances shall be installed per SWPPP Section 2.9. 3. Install orange colored plastic mesh fencing to protect areas that are not to be disturbed and mark trees to be preserved in areas identified on the site map as Preserve Existing Vegetation. 4. Install inlet protection devices on all storm drain inlets. Refer to section 2.6 of the SWPPP. 5. Establish and maintain material and equipment storage areas away from water courses and storm drain inlets. 6. Clear areas as needed for installation of silt Fence 7. Install perimeter silt fences at down gradient locations per SWPPP site map and SWPPP Section 2.7 Establish Perimeter Controls and Sediment Barriers. EPA SWPPP Template, Version 1. 1, September 17, 2007 off Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 8. Install sanitary facility (porta potty) in storage area and make sure it is properly tied down. Make sure ports potties are away from water courses and storm drain inlets. 9. Install dumpsters for solid waste management. Refer to section 3.1 of the SWPPP. 10. Establish hazardous materials storage area within the combined staging area. All BMP's associated with Active Home sites (Relate to schedule and home site typical drawings) Home Home Start Construction: Foundation, SSF, drain, backfill, flatwork, rough BMP's Phasing I grade Home Frame, Roof Construction: Inspections BMP's Phasing II Sheetrock, texture, trim, cabinets Paint, brick, tile Home Carpet, sod Construction: Quality Walk, Sign -off BMP's Phasing III • • EPA SWPPP Template, Version 1.1, September 17, 2007 21 Home Construction BMP Phasing I 1. Inspect BMPs and maintain erosion and sediment controls on and around inventory home sites. See typical drawing on SWPPP site map for erosion and sediment controls at each home site. Refer to Section 2.7 of Typically 3 the SWPPP for perimeter controls and sediment barriers. (Sediment TO Control devices that are used for perimeter control maybe repaired 4 months several times through out construction.) 2. Construct combination staging, material and equipment storage area for each phase of development 3. Install temporary sanitary facilities, "porta- potties" for workforce on dirt and away from the water course and inlets. Make sure porta - potties are properly secured. 4. Prevent and manage spills of stored substances. In the event of a spill, including but not limited to, herbicides, fertilizers, chemicals of any type, soil stabilizers, soil binders, diesel, gasoline, motor oil or lubricant, curing compounds, paints, stains, or sanitary waste, implement clean up measures as indicated in Section 1.8 of SWPPP. Clean up all leaked material or spills immediately. Minnesota has a five -gallon minimum quantity for reporting petroleum spills. Spills of all other chemicals or materials, any quantity is reportable. If in doubt, report to the Minnesota Duty Officer. 651- 296 -6300. See also Section 3.6 of the SWPPP. 5. Install rock drive approaches to material storage areas. Rock entrances shall be installed per SWPPP Section 2.9 Establish Stabilized Construction Exits and details. 6. Keep the streets clean at all times. If they cannot be `broomed' clean EPA SWPPP Template, Version 1.1, September 17, 2007 21 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • • 2.3 Support Facility Activities LJ No support facilities are programmed for the Site at this time EPA SWPPP Template, Version 1.1, September 17, 2007 22 then a street sweeper will need to be used. Home Construction BMP Phasing II 7. Supply dumpsters in construction areas. Refer to section 3.1 of the SWPPP. 8. Stockpile Management 9. Maintain rock drive approaches to each home site. 10. Trench and install and connect utilities; install foundations and slabs 11. Continue vertical construction 12. Keep the streets clean at all times. If they cannot be `broomed' clean then a street sweeper will need to be used. Home Construction BMP Phasing III 13. Fine grade pads 14. Upon completion of fine grade re- establish/install cutback curb /straw waddle /silt fence as a back of curb control as indicated on SWPPP section 2.7, 15. Once complete with vertical construction all disturbed areas in front and side yards will be stabilized with straw matting. Monitor stabilized areas until final stabilization is achieved. Section 7 of the SWPPP 16. Keep the streets clean at all times. If they cannot be `broomed' clean then a street sweeper will need to be used. 17. All perimeter and temporary erosion and sediment controls are to remain in place until the area up gradient is permanently stabilized Phase IV (Post Construction) Final stabilization 1. Homes will be sold with temporary or permanent stabilization in place. Homeowners will be advised of requirement to stabilize disturbed areas on their property and not to remove temporary stabilization measures Typically 1 until they are ready to install hardscape and vegetation. Homes will be TO sodded by Lennar but may not be done at the closing. 6 months 2. Remove silt fence once vegetative final stabilization has been established depending in common areas on home 3. Remove inlet protection sales 4. All construction materials and debris will be removed from the site. 5. All underground drainage structures will be clean and working at full capacity 6. Remove all other temporary erosion and sediment control BMPs and stabilize any areas that are left disturbed. 7. File NOT 2.3 Support Facility Activities LJ No support facilities are programmed for the Site at this time EPA SWPPP Template, Version 1.1, September 17, 2007 22 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 2.4 10 or 5 Acre Temporary Sediment Basins The permanent sediment basins for the Site will a constructed first in each phase that is opened. These will serve as the temporary sediment basins for the site. Due to the discharge to an impaired water within one(1) mile, the site must comply with additional BMP's listed in Appendix A. Cl.d.of the Permit stating: C.1. During construction. c. Temporary sediment basin requirements described in Part III.B.1 -5 must be used for common drainage locations that serve an area with five (5) or more acres disturbed at one time. One additional temporary sediment basin is anticipated in the course of construction. This basin south of the MNDOT drainage channel will serve to treat the water south of the drainage channel until such time as the permanent basin can be constructed north of the channel. Diversions will be used to direct the storm water to these basins. In the event construction practices limits the use of these basins additional basins will be constructed to intercept any drainage to a common area that exceeds 5 acres. 0 2.5 Control Storm water Flowing onto and through the Project During the mass grading operation the only major source of storm water flowing into the site will be from the MNDOT drainage channel. No grading will occur within the channel. The channel will be protected with erosion control fence at the edge of grading, on average 40' from the channel. Drainage toward the channel will be intercepted and directed to a temporary, or permanent storm water basins limiting the potential of sediment leaving the site. The existing vegetation around the channel will be protected during construction and enhanced after construction with the planting of native trees and shrubs around the perimeter of the channel. Areas with storm water flowing onto the lot will typically be limited to the common drainage swale along rear lot lines. In these circumstances, erosion and sediment control devices such as silt fence or bio rolls, will be installed to slow down runoff and/or divert runoff, in order to prevent erosion and control sediment discharges. Alternately, the common drainage swale may have the existing vegetation preserved in order to pass flows through a vegetated area. Sediment control devices would then be installed up- gradient from the swale and the existing vegetation to minimize sediment discharge from exposed areas. 2.6 Stabilize Soils Temporary mulch cover and seed BMP: Temporary mulch cover (straw / hay type) will be applied at rates of 2 tons per acre to provide temporary erosion protection of exposed soils areas • with slopes flatter than or equal to 4:1. Seed ( MNDOT Seed Mix 150) will be applied with the mulch for temporary and / or permanent vegetative growth as necessary. Straw mulch (straw / EPA SWPPP Template, Version 1. 1, September 17, 2007 23 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • hay type) is used for all soil types where slopes are flatter than 3:1 and no significant concentrated flows are present. The mulch is disc - anchored to the soil to keep it from blowing away. The mulch prohibits the impact of the rain drop from dislodging soil and subsequently carrying the soil away during sheet drainage. Hydromulch / seed may be used in areas of final graded lots which have been top - dressed with topsoil and areas of small drainage areas (less than 5 acres) and not in concentrated flows. Additionally, the hydromulch is used in areas where the slope is flatter than 3:1. The hydromulch temporarily stabilizes the exposed soils on the residential lots by protecting against the rain drop and stopping erosion from sheet flow. Hydromulch shall be applied at 15001b /acre if sod is not applied within 7 days of construction temporarily or permanently ceasing. Sod will also be used for permanent stabilization. C. 0 Sod will also be used for permanent stabilization. Sodding provides immediate erosion protection to soil. (See grading plans in Appendix B for specific seed mixes) BMP Description: Hydromulch/Hydroseed or Straw Mulch / Seed ❑ Permanent ® Temporary Installation Schedule: As areas ready for stabilization / within 7 days after final grade or within 7 days if the areas are not to be disturbed after the 7 day. Maintenance and Inspect for uniform coverage and rate of coverage (90% of the Inspection: area should be covered). Inspect to ensure mulch doesn't wash away or blow from wind. Straw mulch should be crimped or a tackifier should be used. If application is not adequate reapplication is needed. Seeding shall be at the specified rate and mixture. Responsible Staff: See Appendix G BMP Description: Sod ® Permanent ❑ Temporary Installation Schedule: Within 7 days of final grade or as homeowners apply Maintenance and Uniform and prepped soil is needed for sod application free of Inspection: rocks, sticks and clumps. Staking and / or shingling of sod is needed for concentrated flow areas and slopes of 3:1 and steeper. Maintenance needed could include regular irrigation, weeding and fertilizing. Responsible Staff Sod Contractor (available though Construction Site Superintendent) See Appendix G EPA SWPPP Template, Version 1. 1, September 17, 2007 24 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 2.7 Protect Slopes Installation Schedule: Maintenance and Inspection: Responsible Staff: BMP Description: Sod Installation Schedule: Erosion control blanket and seed BMP: Erosion control blanket (double sided netting with wood and / or straw fiber) will be used as temporary and permanent stabilization for areas of steep slopes (steeper than 4:1) and for areas of concentrated flow (i.e. swales). Seed will be applied in these areas with the blanket for temporary and / or permanent vegetative growth as necessary. Erosion control blanket will be used on slopes of 4:1 and steeper and in areas of concentrated flow where straw mulch will not be adequate. See Grading and Erosion Control Plan (Appendix B) for minimum location or erosion control blanket. Sod will also be used for permanent stabilization. Sodding provides immediate erosion protection to soil. BMP Description: Erosion Control Blanket Within 24 hours of swale grading within 200 linear feet of inlets or discharge points; slopes shall be blanketed within 7 days of final grade or temporarily ceased areas. Inspect for blanket to soil contact, adequate stapling of the blanket and inspect for undermining following rain events. and reinstall areas of erosion as observed. See Appendix G Within 7 days of final grade or as homeowners apply Maintenance and Uniform and prepped soil is needed for sod application free of Inspection: rocks, sticks and clumps. Staking and / or shingling of sod is needed for concentrated flow areas and slopes of 3:1 and steeper. Maintenance needed could include regular irrigation, weeding and fertilizing. Responsible Staff Sod Contractor (available though Construction Site Superintendent) See Appendix G 2.8 Protect Storm Drain Inlets All inlet protection used will be a type with an emergency overflow built into the system to handle large, high flow storm events. Catch Basin Insert for Paved Streets: Typical curb inlet — type inlet controls used include Wimco's (Device Model CG23, 24 or 25, CG 3067), InfraSafe (DCD -23) , Lange Industries (Device Model Drain Filter SC1735 -51) controls or equal. The inlet controls are similar in flow • rates and storage capacity (approximately 1 CFS, with overflow approximately 3 CFS and nearly 3 cubic feet of storage) that will be used in all soil types. In more clay type soils up- gradient EPA SWPPP Template, Version 1. 1, September 17, 2007 25 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • erosion and sediment controls will minimi the clay material contributing to the inlet controls. Additionally, street sweeping will accompany the inlet controls during paved street conditions. Rear Yard / drop catch basin control — type inlet controls used include Infrasafe Sediment Control Barrier (ISCB -27DG) and similar will be used in concentrated flow conditions at the lowest elevation to encourage temporary ponding of water and controlled emergency overflow during high flow events. Alternatively, the silt fence with wooden stakes may be used with 1.5 "washed rock around the fabric. The wooden stakes will provide support during high flows and varying soil types. The washed rock will provide added treatment for clay -type soils during construction. Inlet protection is to be installed at all storm water inlets which have the potential to receive storm water runoff from the construction site within 200 feet of the limits of construction. LJ Inlet protection will be removed for a particular inlet if a specific safety concern (street flooding/freezing) has been identified and written correspondence has been received from the jurisdictional authority verifying the need for removal. The written correspondence will be documented in the SWPPP or available within 72 hours upon request. If written correspondence can not be obtained in a timely manner, the specific inlet protection will be removed to alleviate immediate safety concerns. Efforts to obtain written correspondence will be documented in the SWPPP. Permission to remove inlet protection based on specific safety concerns will still be obtained from the jurisdictional authority within 30 days of removal. BMP Description: WIMCO's or equal, Bag inserts, Infrasafe Type Barrel rear yard inlet Installation Schedule: Prior to up- gradient soil disturbance Maintenance and Inspect every 7 days & within 24 hrs. of rainfall over 0.5 ", Inspection: Maintain if filled to 1/3 capacity - clean inlet controls within 7 days of observation Responsible Staff: See Appendix G 2.9 Establish Perimeter Controls and Sediment Barriers Standard silt fence will be used curbside and upslope from rear lot swale areas and around storm water ponds. The fence should suffice due to the presence of slopes typically less than or equal to 4:1 and the presence of organic topsoil and partially stabilized areas. The standard silt fence will also be used in smaller watershed areas where the contributing areas are typically less than 1 /4 acre of drainage per 100 feet of standard silt fence. The standard silt fence will also be used for stockpiles which are approximately 8 feet high and 3:1 slopes. The silt fence should provide adequate protect if placed 3 — 5 feet from the toe of the stockpile. The standard silt fence should not be used in areas of highly erodible soils. • Heavy duty silt fence will be used in areas where standard silt fence is deemed inappropriate due to field conditions. Heavy duty silt fence will be used for perimeter control during large areas of EPA SWPPP Template, Version 1. 1, September 17, 2007 26 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • soil disturbing activities near critical resources such as wetlands and other adjacent water resources. The fence will only be used in areas where slopes are equal to or flatter than 3:1 and where the contributing watershed is 5 acres or less. Heavy duty silt fence will be used in areas of highly erodible soils as necessary. Heavy Duty silt fence consists of wire mesh backing, posts, geotextile, and fasteners assembled on Site: Posts: Steel T -post with welded plate, 1.26 lbs per lineal foot and 5 feet long. Post spacing shall not exceed 8 feet by 24 inch embedment. 2. Geotextile: Woven, either monofilament or tape, 36 inches minimum width, UV stabilized, with apparent opening size 20 to 70 sieve, and 100 lbs minimum grab tensile strength. 3. Wire mesh: minimum width of 30 inches, maximum mesh opening of 6 inches, and minimum 14 -1/2 gauge wire. 4. Fasten geotextile and wire mesh to the posts with a minimum of 4 plastic zip ties of 50 -lbs tensile strength. Mulch logs, fiber rolls, and/or mulch berms may be used for slowing and filtering storm water runoff. See the standard Lot Detail information in the standard BMP detail for home building. (Appendix B) BMP De scription: Silt fence (Standard and Heavy Duty) Installation Schedule: I Prior to up- gradient soil disturbance Maintenance and Inspection: Inspect every 7 days & within 24 hrs. of rainfall over 0.5 ", insure base of the silt fence is trenched and soil is compacted to hold fabric in place. Ensure fabric is secure to posts using staples for wooden posts and zip ties for metal posts. Maintain if silt fence filled to 1/3 height of fence or otherwise failing within 24 hours of observation. Responsible Staff I See Appendix G BMP Description: Mulch lo gs, fiber rolls, mulch berm Installation Schedule: Prior to up- gradient soil disturbance Maintenance and Inspect every 7 days & within 24 hrs. of rainfall over 0.5 ", assure Inspection: the BMP is in 100% contact with the soil and no `bridging' or undermining is possible. BMPs should be installed with the terminal ends wrapped upgrade to prevent water from flowing around the control. Responsible Staff: See Appendix G EPA SWPPP Template, Version 1.1, September 17, 2007 27 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 2.10 Retain Sediment On -Site During land development activities temporary sedimentation basins will be used on site when needed. The basins will be designed and built in accordance to the MPCA General Permit and shall have adequate outlet controls to provide skimming of oils and debris, and velocity attenuation. During Home construction it is anticipated the final storm water management system will be in place. The smaller exposed areas will include home sites within previously stabilized areas and temporary basins will likely not be needed. 2.11 Establish Stabilized Construction Exits The site will implement measures to minimize, to the extent practicable, off -site vehicle tracking of sediments onto paved surfaces and the generation of dust. Sediment tracked off -site will be removed at a frequency sufficient to minimize off -site impacts. The measures that will be implemented include: a. Stabilized construction entrances will be installed on every lot before construction begins. b. Water -based dust suppression controls as needed. C. Street sweeping. • B MP Description: Rock Construction Entrance Installation Schedule: Beginning of construction / prior to accessing the soil from paved surfaces Maintenance and Inspect every 7 days & within 24 hrs. of rainfall over 0.5" Inspection: If entrance filled with sediment, producing significant sediment Responsible Staff Foundation Excavator (available through Site Superintendant) See Appendix G or rutting, add rock or BMP Description: St reet Sweeping • Installation Schedule: I Remove any sediment that has been tracked onto streets at the end of the day or within 24 hours of detection Maintenance and Inspect every 7 days & within 24 hrs. of rainfall over 0.5" Inspection: Responsible Staff I Sweeper Contractor - (available through Site Superintendant) See Appendix G EPA SWPPP Template, Version 1.1, September 17, 2007 28 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 2.11 Dewatering Dewatering or basin draining (e.g., pumped discharges, trench/ditch cuts for drainage) related to the construction activity that may have turbid or sediment laden discharge water must be discharged to a temporary or permanent sedimentation basin on the project site whenever possible. Discharge from the temporary or permanent sedimentation basin must be visually checked to ensure adequate treatment is obtained in the basin and that nuisance conditions (see Minn. R. 7050.0210, subp. 2) will not result from the discharge. If the water cannot be discharged to a sedimentation basin prior to entering the surface water, it must be treated with the appropriate BMPs, such that the discharge does not adversely affect the receiving water or downstream landowners. The Permittee(s) must ensure that discharge points are adequately protected from erosion and scour. The discharge must be dispersed over natural rock riprap, sand bags, plastic sheeting, or other accepted energy dissipation measures. Adequate sedimentation control measures are required for discharge water that contains suspended solids. All water from dewatering or basin draining activities must be discharged in a manner that does not cause nuisance conditions, erosion in receiving channels or on down slope properties, or inundation in wetlands causing significant adverse impact to the wetland. If the collected runoff is contaminated with oil, grease, or other petroleum products, oil/water separator or a filtration mechanism may be necessary prior to the discharge. Another method of disposal such as containment and trucking away by a licensed transporter will need to be • implemented if the water has been contaminated by toxic and hazardous materials. Dewatering locations and methodology is at the discretion of the contractor based on their construction schedule. Contractor is responsible for any permits needed to dewater on the site. BMP Description: Dewatering Installation Schedule: As needed Maintenance and Inspect every hour during dewatering operations. Inspection: Responsible Staff: See Appendix G 2.11 Dust Control Wind erosion control consists of applying water and/or other dust palliatives--as necessary to prevent or alleviate erosion by the forces of wind. Dust control shall be applied in accordance with Caltrans standard practices. Covering of small stockpiles or areas is an alternative to applying water or other dust palliatives. This practice is implemented on all exposed soils subject to wind erosion. Effectiveness depends on soil, temperature, humidity and wind velocity. Water shall be applied by means of pressure- type distributors or pipelines equipped with a spray system or hoses and nozzles that will ensure even distribution. All distribution equipment shall be equipped with a positive means of shutoff. EPA SWPPP Template, Version 1. 1, September 17, 2007 29 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Unless water is applied by means of pipelines, at least one mobile unit shall be available at all times to apply water or dust palliative to the project. If reclaimed water is used, the sources and discharge must meet Minnesota Department of Health Standards Non - potable water shall not be conveyed in tanks or drainpipes that will be used to convey potable water and there shall be no connection between potable and non - potable supplies. Non - potable tanks, pipes and other conveyances shall be marked "NON- POTABLE WATER - DO NOT DRINK." Materials applied as temporary soil stabilizers and soil binders will also provide wind erosion control benefits. BMP Description: Dust Control Installation Schedule: I As needed Maintenance and Continuously check for dust and wind erosion during all phases Inspection: of construction. Respo nsible Staff. I See Appendix G 0 SECTION 3: GOOD HOUSEKEEPING BMPS 3.1 Material Handling and Waste Management All waste materials will be collected and disposed of into metal trash dumpsters in the combined staging area. Dumpsters will have secure watertight lids, be placed away from storm water conveyances and drains, and meet all local and state solid waste management regulations. Only trash construction debris from the site will be deposited in the dumpsters. All personnel will be instructed, during tailgate training sessions, regarding the correct procedure for disposal of trash and construction debris. Waste receptacles will be provided at convenient locations throughout the site. These receptacles are, to the extent practicable, placed in locations that do not receive substantial amounts of storm water runoff and do not drain directly to surface water bodies. The approximate locations of these receptacles are provided on the SWPPP Map located with the site superintendant. Trash dumpsters will be installed once the combined staging area has been established. The dumpsters will be inspected weekly and immediately after a storm event. The dumpsters will be emptied and the waste removed from the site for appropriate disposal or recycling on a • regular schedule to prevent them from overfilling. EPA SWPPP Template, Version 1.1, September 17, 2007 30 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • BMP Installation Schedule: I At the beginning of construction Maintenance and Inspect every 7 days — Collect all construction debris in Inspection: dumpsters and empty when debris reaches top of dumpster. All dumpsters and portable bathrooms should be located at least 10 feet from inlets and waterways. Additionally dumpsters and toilets should be located upgrade from sediment controls. A rock entrance may be needed for the dumpster to minimi tracking. Responsible Staff. I See Appendix G BMP Description: Sanitary facilities Installation Schedule: At the beginning of construction Maintenance and Maintained by independent contractor on their recommended Inspection: guidelines; sanitary units should be secured and maintained regularly. Additionally toilets should be located upgrade from sediment controls and 10 feet from inlets or waterways. Responsible Staff See Appendix G 3.2 Establish Proper Building Material Staging Areas • Construction equipment and maintenance materials will be stored at the combined staging area and materials storage areas. A construction trailer will be used to store hand tools, small parts, and other construction materials. All hazardous -waste materials such as oil filters, petroleum products, paints, and equipment maintenance fluids will be stored in structurally sound and sealed containers under cover within hazardous materials storage. Large items, such as framing materials and stockpiled lumber, will be stored in the open in the storage area. The combined staging and materials storage area will be installed after grading and before any infrastructure is constructed on site. The material storage areas for homebuilding will be located on the individual lots where homebuilding is taking place. Storage areas will be inspected weekly and after storm events. Storage areas will be kept clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Perimeter controls, containment structures, covers, and liners will be repaired or replace das needed to maintain proper function. The construction schedule for the land development activities will be located in Appendix H, the • grading and stabilization log. For an up to date schedule on any land development activities please call the land development manager located on the front Page of this SWPPP. EPA SWPPP Template, Version 1. 1, September 17, 2007 31 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • During homebuilding an online scheduling tool will be used. Contact the Construction Manager (located in the front of this SWPPP) for up to date information on homebuilding activity. BMP Description: Storage / Staging Yards Installation Schedule: Prior to construction of lots Maintenance and Inspect weekly and within 24 hours of rain event to observe Inspection: location out of conveyances and waterways; inspect access locations for tracking; if tracking is occurring install rock access to staging areas. Responsible Staff See Appendix G BMP Description: Storage Trailers or `box' Installation Schedule: Prior to construction of lots Maintenance and Inspect weekly and within 24 hours of rain event to observe for Inspection: proper cleanup and storage of materials and to ensure the trailer or `box' is secure and dry. Responsible Staff See Appendix G • 3.3 Designate Washout Areas All concrete mixer trucks used on site will have self contained washout systems. These systems will allow the drivers to wash their chutes without allowing wash water to come into contact with the ground. The wash water will be carried back to the plant with the truck for proper disposal. BMP Description: Concrete Washout System Installation Schedule: Prior to and immediately after foundation, sidewalk and / or driveway pouring Maintenance and Completed by independent contractor in system approved by Inspection: owner. Inspect for leaks and spills as well as general usage from the contractor. Responsible Staff See Appendix G 3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices • Several types of vehicles and equipment will be used on site throughout the project, including graders, scrapers, excavators, loaders, paving equipment, rollers, trucks and trailers, backhoes, EPA SWPPP Template, Version 1. 1, September 17, 2007 32 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • and forklifts. All major equipment/vehicle fueling and maintenance will be performed off site. On site fuel storage tanks other than approved portable fuel containers such as gasoline cans or 20 gallon pickup bed fuel tanks, will have a means of secondary containment and will be located, whenever possible, undercover in the combined staging area. Only minor equipment maintenance activities will occur on site. All equipment fluids generated from maintenance activities will be disposed of into designated drums stored on spill pallets. Absorbent, spill cleanup materials and spill kits will be available at the combined staging and materials storage area. Drip pans will be placed under all parked equipment and vehicles receiving maintenance overnight. Any inadvertent spills will be cleaned up immediately upon discovery and the materials will be disposed of in accordance with local, state and federal requirements. n U Equipment and vehicle maintenance and fueling practices will be implemented at the beginning of construction on site. Inspect equipment/vehicle storage areas and fuel tanks weekly and after storm events. Vehicles and equipment will be inspected on each day of use. Leaks will be repaired immediately, or the problem vehicles or equipment will be removed from the project site. Keep ample supply of spill clean up materials on site and immediately clean up spills and dispose of materials properly. BMP Description: Secondary Containment/Drip Pan Installation Schedule: I Prior /Concurrent with start of construction Maintenance and Inspect vehicles on site weekly and observe for presence of drips, Inspection: leaks or spills. Contain material and cleanup any material by use of spill kit materials Responsible Sta ff. I See Appendix G 3.5 Control Equipment/Vehicle Washing Routine maintenance of vehicles and equipment shall not occur on site. Vehicle washing should be avoided. If washing is necessary, runoff from the washing will be contained and limited to a defined area of the site. Runoff must be contained and waste properly disposed of off site according to state and federal regulations. 3.6 Spill Prevention and Control Plan Potential pollutant sources, including construction and waste materials that are used or stored at the site are described in the section. By implementation of these BMP's, the potential pollutant sources are not reasonably expected to affect the storm water discharges from the site. Construction materials and chemicals used or stored on -site are kept in small quantities whenever possible. When not in use, they will be stored in sealed containers and under cover to • prevent direct contact with storm water. Any inadvertent spills will be cleaned up immediately EPA SWPPP Template, Version 1. 1, September 17, 2007 33 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • upon discovery and the materials will be disposed of in accordance with local, state and federal requirements. Spill prevention measures used to prevent the discharge of wastes and hazardous materials into navigable waters of the United States include identifying the types and locations of materials that will be stored on site and knowing the drainage patterns for those areas. Containment and diversionary structures will be utilized for toxic or other hazardous materials. Visual inspections of storage and containment areas will be conducted monthly for signs of deterioration, discharges, or accumulation of oil or other hazardous wastes inside containment areas. Oil - handling employees will be trained in the proper spill prevention and disposal procedures. Hazardous wastes will be secured within a covered and enclosed area with limited access. The area will be locked and signed for hazardous waste storage. Spill response procedures must be taken to control, contain, and recover discharged product. In general, the following steps are taken: • Eliminate potential spark sources; • If possible and safe to do so, identify and shut down the source of discharge to stop the flow; • Contain the discharge with sorbents, berms, trenches, sandbags, or other material using the spill kit on site; • Contact the facility manager /emergency coordinator (Located on the front page); • • Contact regulatory authorities and the response organization and report the release; and • Collect and dispose of recovered products and wastes according to federal and state regulation. Employees will be trained in the operation and maintenance of pollution prevention equipment, spill prevention procedures, discharge procedure protocols, applicable pollution control laws, rules and regulations, and general facility operations, including waste and hazardous material storage area locations, potential spill pathways and proper delivery procedures. See the MPCA Reporting spills and leaks for additional information (Appendix E) 3.7 Planning BMPs Weekly training sessions with contractors will be used to inform all site personnel on the status of the site and discuss BMP's that are working, not working or additional BMP's that should be considered. These sessions will also be used to remind contractors of their responsibility to maintain the site per the SWPPP and report and problems they have noticed. The grading contractor is responsible for phasing grading activities to minimize exposed soils. This includes but is not limited to finishing an area of grading and either temporary stabilizing or permanently stabilizing and area before staring grading elsewhere. Wherever practical no more then 10 acres should be under construction, not stabilized, at any time. • EPA SWPPP Template, Version 1. 1, September 17, 2007 34 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • The grading contractor is responsible for monitoring the weather to ensure the site is prepared for rainfall. If the Weather Service is predicting a rainfall event the severity of the rainfall event needs to be determined and the site prepared accordingly. This may include but ids not limited to: • Temporarily directing water to a temporary sediment pond. • Grading slopes to drain away from wetlands and sensitive areas. • Adding berms, diversions or biorolls to protect wetlands and sensitive areas. • Rolling or compacting exposed soils to minimize soil migration. • Cleaning streets and or providing catch basin inserts or protections. 3.8 Allowable Non -Storm water Discharge Management Non -storm water discharges will be eliminated or reduced to the extent feasible, with the exception of those necessary for the completion of certain construction activities. Authorized non -storm water discharges from this site include: 1. Water used for dust control purposes • 2. The application of water by water trucks or piped irrigation 3. Landscaping activities requiring irrigation 4. Street cleaning (where permitted and necessary) 5. Trucking of Saturated Soils 6. Discharges from fire - fighting activities 7. Waters used to wash vehicles where detergents or hot water are not used 8. Routine external building wash down that does not use detergents or hot water 9. Uncontaminated air conditioning or compressor condensate These authorized non -storm water discharges will be conducted in accordance with the requirements of the CGP, and every effort will be made to minimiz non -storm water runoff from these site activities. The Contractors are responsible to implement the following BMP's and management for non -storm is water discharges. EPA SWPPP Template, Version 1. 1, September 17, 2007 35 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 The BMPs for the non -storm water discharges from this site are; Water used for Dust Control This is not anticipated to be a contamination / pollution issue. During the dry times when dust control is needed the minimal amount of water is anticipated to be absorbed into the soil. If any runoff does occur, the standard BMP's (such as silt fence, mulch and erosion control blanket, and inlet controls should adequately control the runoff from reaching off site surface waters). Application of water by water trucks or piped irri ag tion Water runoff is not anticipated from this activity. If application of water by water truck or irrigation is occurring on site it will likely be during dry times of the year and the water will be absorbed or evaporated on site. If runoff occurs the existing BMP's (silt fence, mulch and seed, sod, inlet protection devices, storm water ponds and others) will likely adequately control the runoff. Landscaping Irrigation Landscaping irrigation will be clean water and discharged in non - erosive velocities over landscaped areas of mulch or sod and is not anticipated to be an erosion concern or be present in quantities to become a runoff issue. If runoff from irrigation for landscaping (to help establish vegetation) does become a problem the perimeter controls or existing vegetative buffers will be used to control the runoff. Street Cleaning Street Cleaning wash water is not anticipated to be a runoff issue. The pavement is swept using water by the pickup brooms and the water should be collected by the • time it would run off the pavement. Trucking of Saturated Soils: If trucking of saturated soils will occur, leak proof trucks shall be used or the load of saturated soils shall drain sufficiently until the drippage has been reduced to less than 1 gallon per hour prior to leaving the site area / disturbed area perimeters. Discharges from fire - fighting activities: Fire hydrant flushing and fire fighting activities if done on site will likely be during an emergency situation. If done during an emergency to save life, limb or property the resulting erosion and sedimentation will be corrected, cleaned up and repaired once the emergency situation is resolved. Should fire hydrant flushing be necessary the flushing will be done via a pipe to discharge the water into a conveyance with energy dissipation at the discharge point to prevent scour. Waters used to wash vehicles where detergents or hot water are not used: It is not anticipated that vehicle washing will be done on site. If vehicles are washed, they will be done so on pervious areas contained within silt fences and gravel bases which should adequately control the minimal amount of runoff. Routine external building wash down that does not use detergents or hot water: The external building washing, if occurring on site, will be done while perimeter controls exist on site. The perimeter controls (silt fence) will control the minimal amount of runoff (if any) on site. Uncontaminated air conditioning or compressor condensate: Air conditioning condensate is not • anticipated to become a runoff issue as it is present in quantities small enough to be absorbed or evaporated prior to running off the site. EPA SWPPP Template, Version 1. 1, September 17, 2007 36 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 10 SECTION 4: SELECTING POST-CONSTRUCTION BMPs A registered professional Engineer has prepared this section, selecting and designing the post - construction storm water management measures that will be implemented at the site as part of the Erosion and Sediment control Plan (ESC Plan). These measures will be installed during construction process to control pollutants in storm water after construction operations have been completed, and will be designed and installed in compliance with applicable state and local requirements for erosion and sediment control and storm water management as listed below: 1. MPCA General Storm water Permit — Specifically Part III. C, can be found in Appendix C 2. City of Chanhassen (permitted MS4 City) - Specific sections of the City code can be found in Section 1.11 and Appendix C. It was found the Cities ordinance was the more stringent rule in governing the permanent Storm water Management BMP's. The City of Chanhassen's Storm water Management Ordinance requires all new developments to meet quality, flow rate and volume reduction requirements. These requirements are summarizes as follows: 1. Rate Control - The proposed flow rate from the proposed development shall not exceed the flow rate of the existing drainage areas for the two and ten and 100 year storm event. 2. Water Quality- Best management practices are required to reduce the Total Suspended Solids (TSS) by 80% and Total Phosphorous by 50 %. • To meet the Storm water Ordinance requirements, three storm water basinsare proposed for the site. The storm water basins are designed to treat the runoff from the 2.5" rainfall event per the Cities standard. Ownership and maintenance of post - construction BMPs are the responsibility of the City of Chanhassen. The following are a list of the permanent BMP's designed for the Site: Permanent BMP's Storm water Management Basins: The storm water basins are designed to treat the runoff from the 2.5" rainfall event per the Cities standard. Design Specifications can be found in Section 1.11 and Appendix C. Final design can be found in the Grading and Erosion Plans and Utility and Street Construction Plans found in Appendix B. The ordinance requires 1.68 ac *ft of wet volume for water quality 2.91 ac *ft if provided. Basin Volume Required Ac *Ft Volume Provided Ac *Ft 100 0.23 0.43 200 1.08 1.82 300 0.37 0.66 EPA SWPPP Template, Version 1. 1, September 17, 2007 37 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Outlet Protection and Energy Dissipation Devices: All outlets are designed to meet the discharged rule of no more than 5.66 cubic feet per second (cfs) per acre of surface area of the pond (MPCA rule III.C. Lc). Likewise the outlets into the pond have rip rap settlement basins /energy dissipaters meeting the Cities ordinance. Design Specifications can be found in Section 1.11 and Appendix C. Final design can be found in the Grading and Erosion Plans and Utility and Street Construction Plans found in Appendix B. Basin Velocity of Outlet fps 100 5.56 200 2.70 300 5.57 Oil and Floatable Skimmers on Basin Outlets: The outlets from the storm water basins are all equipped with a skimmer devise capable of capturing oil and floatable materials prior to the outfall reaching on site wetlands or leaving the site. This meets the requirement of Section 5.3 of the City of Chanhassen Storm water Management Plan. Design Specifications can be found in Section 1.11 and Appendix C. Final design can be found in the Grading and Erosion Plans and Utility and Street Construction Plans found in Appendix B. • Outlet Control on Basin Outlets: The outlets from the Storm water basins are designed to decrease the flow rate from the site protecting downstream conveyances; storm water pipes, swales, ditches and basins, increasing their capacity and protect them from scouring from higher velocities or elevations. Design Specifications can be found in Section 1.11 and Appendix C. Final design can be found in the Grading and Erosion Plans and Utility and Street Construction Plans found in Appendix B. Wetland Buffers: The site wetland is protected from future impacts by placing natural vegetation buffers around them per City Code Article VII, Chapter 20; these buffers filter water from rear yards, before reaching the wetlands, and prevents homeowners from removing the naturally filtering vegetation. Design Specifications can be found in Section 1.11. Final design can be found in the Grading and Erosion Plans and Utility and Street Construction Plans found in Appendix B. is EPA SWPPP Template, Version 1.1, September 17, 2007 38 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 SECTION 5: INSPECTIONS 5.1 Inspections Inspections will be conducted by authorized representatives of a Division President, generally the Construction Site Superintendant, a qualified associate, or a third party consultant. Copies of the inspections and corrective actions must be documented in the onsite SWPPP and available within 72 hours if requested. Lennar Corp inspection procedures are accomplished via the internet on a program called BuildPro. The deficiencies are reported through to the BMP / Erosion Control Contractor where they are notified of the corrective action and once corrected the construction site supervisor checks the item off. Once all items have been completed the inspection form is printed off and filed which includes a signoff and date log. The following shall be completed during each inspection: 1. Inspections will be performed every 7 days or within 24 hours of a 0.5" rainfall event or greater. The following shall be documented on site with the SWPPP: A. Date and time of inspections B. Name of persons conducting inspections C. Corrective actions taken D. Date and amount of all rainfall events greater than %2 inch in 24 hours E. Documents and changes made to the SWPPP 2. Maintenance will be performed within the timeframes of the NPDES permit when the following site conditions indicate: a. Perimeter Protection should be repaired when it becomes non - functional or sediment reaches 1/3 the height of the fence or sand bags. b. Inlet protection devices should be repaired when they become non - functional or sediment reaches 1/3 the height and/or depth of the device c. Temporary sediment basin must be have the sediment removed once the sediment has reached %2 the storage volume within 72 hours of discovery (if applicable) d. Tracked sediment must be removed within 24 hours of discovery of off site tracking onto paved surfaces. e. Contractor is responsible for maintaining all BMPs until work has been completed, site has gone under final stabilization, and the Notice of Termination has been submitted to the MPCA or the site has transferred ownership in accordance with Part II.B.5 of the NPDES Construction General Permit. EPA SWPPP Template, Version 1. 1, September 17, 2007 39 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 5.2 Delegation of Authority Duly Authorized Representative(s) or Position(s): Lennar Corp 935 East Wayzata Boulevard Wayzata, MN 55391 See Appendix J Delegation Forms The named person(s) or position(s) will conduct the routine inspections and is responsible for completion of documentation and logs as documented in Appendix J. 5.3 Corrective Action Log Completion of the corrective action log is needed following the inspection results and addressing the necessary corrective actions listed in east log according to the time frames set forth in the MN CGP. It is common practice for the Construction Supervisor / Manager to indicate the install date and corrective actions on the respective inspection log from the online inspection program and / or individual lot survey to for install date of the BMPs associate with that lot. Corrective action will be maintained on the Lennar BUILDPRO website and will be available at request. • • EPA SWPPP Template, Version 1.1, September 17, 2007 40 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • SECTION 6: RECORDKEEPING AND TRAINING 6.1 Recordkeeping All SWPPP and NPDES records shall be available on site or at a location posted in a conspicuous location near the entrance of the site. Dates and records of each inspection shall be documented and retained on site; these records shall include corrective actions. Date(s) when construction activities temporarily or permanently cease on a portion of the site shall be recorded: For homebuilding, when construction activities temporarily or permanently cease on a portion of the site it shall be recorded on the site maps and it will be completed in our online homebuilding applications Buildpro. For Land Development, when construction activities temporarily or permanently cease on a portion of the site it shall be recorded on the site maps and in the grading and stabilization log • Date(s) when an area is either temporarily or permanently stabilized shall be recorded: For homebuilding, when area is either temporarily or permanently stabilized shall be recorded on the site maps and it will be completed in our online homebuilding applications Buildpro. For Land Development, when an area is temporary or permanently stabilized shall be recorded on the site maps and in the grading and stabilization log Archiving Documentation: SWPPP documentation contained within this narrative and SWPPP plan / maps and inspection records for a period of three (3) years after submittal of the Notice of Termination (NOT). The SWPPP information archived, including other permit information for the project; records of inspections and maintenance conducted during construction; permanent operation and maintenance agreements (ROW / Contracts / Covenants / Other Maintenance); required calculations for design of the temporary and permanent storm water management systems; will be done as required. • EPA SWPPP Template, Version 1. 1, September 17, 2007 41 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 6.2 Log of Changes to the SWPPP The SWPPP shall be amended as necessary to include additional requirements, such as additional or modified BMPs, designed to correct problems identified or address situations whenever: a. There is a change in design, construction, operation, maintenance, weather or seasonal conditions that has a significant effect on the discharge of pollutants to surface waters or underground waters; b. Inspections or investigations by site operators, local, state or federal officials indicate the SWPPP is not effective in eliminating or significantly minimizing the discharge of pollutants to surface waters or underground waters or that the discharges are exceeding water quality standard; or c. The SWPPP is not achieving the general objectives of controlling pollutants in storm water discharges associated with construction activity, or the SWPPP is not consistent with the terms and conditions of this permit. d. At any time after permit coverage is effective, the MPCA determines that the project's storm water discharges may cause, have reasonable potential to cause, or contribute to non - attainment of any applicable water quality standard, or that the SWPPP does not incorporate the requirements in Part III.A.7 related to an • approved Total Maximum Daily Load (TMDL) implementation plan that contains construction storm water related requirements. If MPCA makes such determination(s) or any of the determinations in Parts III.A.4.a. -4.c., MPCA will notify the Permittees in writing. In response, the Permittees must develop a supplemental BMP action plan or appropriate SWPPP amendments describing SWPPP modifications to address the identified concerns and submit information requested by MPCA, which may include an individual permit application. If MPCA's written notification requires a response, failure to respond within the specified timeframe constitutes a permit violation. (See Appendix H for SWPPP Amendments) 6.3 Training Based on the MPCA NPDES Construction Site General Permit (MN RI00001) certain individuals associated with this project must have training which is commensurate with job duties and responsibilities in three categories. 1. SWPPP Designer, individuals preparing the SWPPP for the project. 2. Site Manager, individuals overseeing implementation of, revising, and amending the SWPPP and individuals performing inspections One of these individuals will be available for an on site inspection within 72 hours upon request by the MPCA. EPA SWPPP Template, Version 1. 1, September 17, 2007 42 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • 3. BMP Installer, individuals performing or supervising the installation, maintenance, and repair of BMPs. At least one individual on the project will be trained in these job duties. (See Appendix I for training documentation) SECTION 7: FINAL STABILIZATION Sod and associated landscaping will also be used for permanent/final stabilization. Sodding provides immediate erosion protection to soil. Final Stabilization Prior to submission of the NOT, all temporary synthetic and structural erosion prevention and sediment control BMPs (such as silt fence) must be removed on the portions of the site for which Lennar is responsible. BMPs designed to decompose on site (such as some compost logs) may be left in place. For residential construction only, individual lots are considered finally stabilized if the structure(s) are finished & temporary erosion protection and down gradient perimeter control has been completed and the residence has been sold to the homeowner. Additionally, Lennar must distribute the MPCA's "Homeowner Fact Sheet" to the homeowner to inform the homeowner of the need for, and benefits of, permanent cover. Lennar may terminate permit coverage prior to completion of all construction activity if all of the following conditions are met in addition to Part IV.G.2 through Part IV.G.3 and where applicable, Part IV.G.4 or Part IV.G.5. a. Construction activity has ceased for at least 90 days. b. At least 90% (by area) of all originally proposed construction activity has been completed and permanent cover established on those areas. c. On areas where construction activity is not complete, permanent cover has been established. Final Stabilization requires that all soil disturbing activities at the site have been completed and all soils must be stabilized by a uniform perennial vegetative cover with a density of 70% over the entire pervious surface area, or other equivalent means necessary to prevent soil failure under erosive conditions. NOT submittal shall be completed within 30 days of final stabilization or upon meeting the above requirements. (See Appendix D for NOT Form). • EPA SWPPP Template, Version 1. 1, September 17, 2007 43 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • BMP Description: Sod Installation Schedule: Within 7 days of final grade or as homeowners implement following the Certificate of Occupancy. Maintenance and Regular irrigation, fertilizing, weeding and mowing is needed. Inspection: Sod shall be staked down to secure the sod until establishment in swales and slopes 3:1 and See Appendix G pect sod post installation. • • EPA SWPPP Template, Version 1. 1, September 17, 2007 �' EA! Draft Stormwater Pollution Prevention Plan ( SWPPP) Lyman Site - October 11, 2010 0 SECTION 8: CERTIFICATION AND NOTIFICATION Instructions: — The SWPPP should be signed and certified by the construction operator(s). Attach a copy of the N01 and permit authorization letter received from MPCA in Appendix D. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name: Title: Signature: Date: n LJ • EPA SWPPP Template, Version 1.1, September 17, 2007 45 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 SWPPP APPENDICES Attach the following documentation to the SWPPP: Appendix A — General Location Map Appendix B — Site Maps Appendix C — Construction General Permit Appendix D — NOI, Acknowledgement Letter from MPCA and Notice of Termination Appendix E — Reporting Spills and Leaks — MPCA Handout Appendix F — SWPPP Amendment Log Appendix G — Subcontractor Certifications /Agreements Appendix H — Grading and Stabilization Activities Log Appendix I — Trailing Log Appendix J — Delegation of Authority Form Appendix K — Additional Information For all Inspection Reports, Corrective Action Logs, Grading and Stabilization Logs and rainfall Log, Invoices, and tool box talk trainings consult the separate Inspection Binder located near the SWPPP Binder or consult the site superintendant/supervisor. • • EPA SWPPP Template, Version 1.1, September 17, 2007 46 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 Appendix A — General Location Map 40 EPA SWPPP Template, Version 1. 1, September 17, 2007 47 • • • N A E G G f� £� � qm m �ELE m m c o O N q E a 3 , s 2 , N G N � Q m � 0 N m G m G J m 7 Q• N � C N o e ' 3 ? •` o a 0 u J C C C Z a O C O m N O 7 C C 17 N fJ N d q q p U W m °' v E a G a c E O L a a � ?+ C Q 0C tY E e' J n N C C E 0 E O N a t, y> t y 3 1 N T N a [ N 0 Y ] Y O y G U U O O U 0-4 O C, O G O 1 �' N O fa t L d ca C O O m C t 0 p C p C O p 'J E a E A t ?� 3 U G N v G N y U J 1 J t9 a J G C N .. O N O N _. O G r 0 2 3 Q 0 C N orn i s h 10 d Z U U c O Zo rJ 0 u) 3� ��u) JH V orn rno o�o�o 03�o3 °x =� n to V U U •C s m E F E U V N d n1 v Q 16 I A3 JaAOD . Doll e ` ,L 09 N `m V �$ , .' ` \� i •'.�. .fit t J`I s 0 o d t - CrescentCt as; is ,� i . /i' C � � Ci t \ j r I ~,•. N E IL "U � vVi ;M Jr' y J .,� ;`i;E. ; "• L ��i I `' f J t '' �� o ca L. , yy l .��,� O } +� 'Fa >. .� i `5i �,' Q I l ' �: • �a� � t � •7'L � J ' off• �, �' ttte^' \, .0. -^ � N m I �'J i :4� _ .r. .. fi5i,, �)a, ,� ` lj. O N Cm MCC G v �, aA . 1 �. 'hI tlt,�.7 w 1,r±a'Y ins.; j t.... 4 ' ' - '. =„� I ' '� • ' r . o41 �� N Cu . f k DAY "04voi � .E at • !Q 3 ° .� f . ip �—" Eno Ava n7 J '' , Hidden Ct ; • v ''�; . ' ! , °� , t ,'t Aa�Bda . \ t • '3 . �_, m y' ' a 4 % AI f a, PNB Weld ieaig i (r I;�' — �' ` s 1: o�` ' � ;',0�.'— �.I�i�j� r �, � � .9 ± c I � t�J '` `� {` , rr �- r r � o •: {� � � A 'x j a� 41 ;1 . ,� ', �. wk ,I. � a N dam? �•.�;'�`:. t i §d ; }.� i.. �� ! I ; J � irk � ,(': �' 1'^,l Irj•S. •. �. •M � � U - • ! t j f ! !j j N A Ca o C l i O r Ulfluasng;, J, Powers BWd 9 441 I'•.. - ti �� A ��; a _ 4"••.'`.. `. _•''',�I. .;�.v� (,._ \ - C'1 1 : " -�� I 1 , _ Special Waters Search Results Page l of 1 The features listed in the table below represent the special and impaired waters found to be within 1 mile of your site boundaries. Click on the ''BMP link" to see the Best Management Practices required for that type of special or impaired water. Draft 2010 Impaired Lakes Rec AVID CALM Approved TMDL Plan for Needs TMDL Plan for Affected ' BMP Draft 2010 Category pollutant(s) pollutant(s) Use Link Parameter` 1 10 -0002- 00 5A Hg, Nutrients AQC, AQR tmdl csw 2 10- 0013 00 56 Hg Nutrients AQC, AQR tmdl -csw Nutrients Special Waters Search Results Page 1 of 1 The features listed in the table below represent the special and impaired waters found to be within 1 mile of your site • boundaries. Click on the "BMP link" to see the Best Management Practices required for that type of special or impaired water. Draft 2010 Impaired Streams Rec AUID Approved TMDL Plan for Affected Draft 2010 CALM Needs TMDL Plan for Stream BMP' pollutant(s) Use Parameter Category pollutant(s) Name Link 1 07020012- AQL na 5C T Riley Creek tmdl- 511 - csw Best Management Practices Page 1 of 1 Minnesota Pollution Control Agency Projects with discharges within 1 mile of an impaired water Owners must submit the application for coverage and the Storm Water Pollution Prevention Plan at least 30 -days before the construction start date for additional review for projects that disturb 50 or more acres of soil and have a stormwater discharge point within 1 mile of an impaired water. An impaired waters for the purposes of this permit are those waters identified as impaired pursuant to section 303(d) of the Clean Water Act where the identified pollutant(s) or stressor(s) are phosphorus (nutrient eutrophication biological indicators), turbidity, dissolved oxygen, or biotic impairment (fish bioassessment, aquatic plant bioassessment and aquatic macroinvertebrate bioassessment) All projects with a discharge point within 1 mile of an impaired water must incorporate the additional best management practices (BMPs) C.1 & C.2 found in Appendix A of the permit for all portions of the project that drain to the discharge point: C.1 During construction. a. All exposed soil areas must be stabilized as soon as possible to limit soil erosion but in no case later than seven (7) days after the construction activity in that portion of the site has temporarily or permanently ceased. • b. Temporary sediment basin requirements described in Part III.B.1 -5 must be used for common drainage locations that serve an area with five (5) or more acres disturbed at one time. C.2. Post construction. The water quality volume that must be treated by the project's permanent stormwater management system described in Part III.C. shall be one (1) inch of runoff from the new impervious surfaces created by the project. Where site conditions allow, at least %2 inch of the water quality volume must be infiltrated. See Part III.C.2 for more information on infiltration design and appropriate site conditions. If it is determined that site conditions are not appropriate for infiltration (e.g. lack of 3 ft. of separation to seasonally saturated ground water, proximity to bedrock, contaminated soils) the reasons should be documented in the Stormwater Pollution Prevention Plan(SWPPP) for the project. Infiltration is not required in Hydrologic Soil Group D soils. Print Pa�e ; 0 close window • http : / /pca- gis02.pca. state mn.us /website /stonnwater /csw /links /tmdl -csw bmp.htm 9/23/2010 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix B — Site Maps, Plans and Details 40 0 EPA SWPPP Template, Version 1. 1, September 17, 2007 48 E • • LA �7— =I A, X iY ---- V f n % .... ....... L CATCHMENT A V7 \XN Z i'l w 7" w y V t J ♦ o 7 .... ..... .. x" S ........ ... 7 h... .. ..... .. . ... . .... .... PISNEERMinming — -- --- —e---ll 2422 Enterprise Dnvc !651)68 -1914 — Mendota Heights, MN 55120 F 68 1 -9488 w—plon—eng—ra 0 50 100 200 GRAPHIC SCALE IN FEET 110211-EX-HYDRO.DWC, • • 1�1 PISNEERMineering 2422 Enterprise Dri,e (651) 691-1914 Mendota H6gh MN 55120 F— 681-9498 .......... ... ........... . v- (D milli AM . ..... .. . ... ....... . I V . . . ........ w v V g I g ' L 0 50 100 200 GRAPHIC SCALE IN FEET POND O CATCHMENT )1021)-PREPRO-HN' RODWG . .. ...... . . . . . . . . . . . . 0, .... ... ..... ..... ..... .. - M, 77 . ..... .. . ... ....... . I V . . . ........ w v V g I g ' L 0 50 100 200 GRAPHIC SCALE IN FEET POND O CATCHMENT )1021)-PREPRO-HN' RODWG • • • LEGEND EXISTING PROPOSED DESCRIPTION A HYDRANT(S) D4 N GATE VALVE(S) D ► REDUCER(S) — - - - -- EXISTING WATERMAIN PROPOSED WATERMAIN — - - - - FUTURE WATERMAIN O • SANITARY MANHOLE(S) - - - -- EXISTING SANITARY SEWER < PROPOSED SANITARY SEWER — FUTURE SANITARY SEWER 8 CATCH BASIN O • MANHOLE D ® FLARED END ® BEEHIVE — - - - -- EXISTING STORM SEWER « PROPOSED STORM SEWER — - - - - — FUTURE STORM SEWER - - -- -- ...acs.......... -- EXISTING 2' CONTOUR LINE -- - - - - -- zoo- - - - - -- EXISTING 10' CONTOUR LINE PROPOSED 2' CONTOUR LINE PROPOSED 10' CONTOUR LINE NNL -e8�.0 POND OUTLET LINE ---� ' - = - -- POND HIGH WATER LINE 84 . PROPOSED SPOT ELEVATION ♦ `� ♦ EMERGENCY OVERFLOW ---- -- - - -- DELINEATED WETLAND LINE ....., ... wnu PROPOSED /EX. RET WALLS • • • • • • EROSION CONTROL FENCE - EASEMENT LINE O GRAVEL SURFACE D BITUMINOUS SURFACE CONCRETE SURFACE s O tp EX. SERVICE EX. LAWN SPRINKLER VALVE In EX. LAWN SPRINKLER HEAD o` EX. WATER WELL EX. CULVERT EX. TREE LINE >� EX. MAJOR TREE — .,.. .^.h EX. OVERHEAD UTILITY LINES - -- ..-- - - - - -- is -- - -- EX. UNDERGROUND TELEVISION ....... ,,,- kel EX. UNDERGROUND TELEPHONE .,. - ° -- .,, - -- EX. FIBER OPTIC LINE - - - -, - - --- - - -- EX. ELECTRIC LINE ............ . ..................... ..; ........... EX. UNDERGROUND GAS ........... • .................... ............ EX. FENCE LINE ........................ A ,.......................... EX. FENCE LINE .....-_._ ................ f1..........._...._..__... EX. SOUND BARRIER WALL ■ EX. ELECTRIC BOX O EX. ELECTRIC BOX :u EX. MONITORING WELL O EX. TELEPHONE BOX EX. TELEVISION BOX EX. UTILITY POLE o EX. LIGHT POLE 8 EX. TEST HOLE ® EX. MAILBOX EX. SIGN ROADWAY IMPROVEMENTS BITUMINOUS PATH CURB LINE T 'CONCRETE WALK - ---- -- ----- - -- - - RIGHT -OF -WAY LINE SETBACK LINE The in formation and /or renderings and maps contained herein. such as street and at location, dimensions. areas. landscaping and am enities, are of the sole purpose of depicting o possible use of the properties, and are subject to change, no representation or —ronly as to z nin g, development ership or land u e an the information and/or renderings and maps or of such properties is being made, and Buyers should not and will not rely views contained herein in deciding to purchase any property, etc. Pioneer Engineering, P.A. make no rranties or representations of any kind r or character, expressed o implied, with respect to the matters depicted or covered by the rendering, drawings and other information herein. For details of existing developed a refer to the recorded final plot. Theo r of the properly shown and their successors and assigns re serve the right to make z ling, development, — nership and /or told use changes for any part(s) of the properties. The developer reserves the right to change the plans without further notice. Subject to City and oil Government approvals. _ PI_S_N 2422 Ente ve uxo.arxveroxs (651)681 -1914 0�M ryrise Dri Mendota Heights, M Fax: 681 -9488 N 55120 WW to- ereng.com LAKEVIEW PRELIMINARY DEVELOPMENT PLAN CHANHAS SEN, MINNESOTA V1Kf R(1{Y ORDINARY HIGH WATE 12 / -- O 11 to 400 390 7 38 O 1 37 O �� \ t DNR WETLAND 10 -213W ) 36 ITT 0 8 l\ i 28 29 O 3° ❑ 32 33 3. 35 z\ - �y �, o ❑ ❑ ❑ 04 �I \\ t t OU1L0T A t 51REET D N I ❑ \ Z O ❑ ❑ ❑ 3 11 \ t YQ O ❑ ❑ ❑ \ 28 25 � \ I 27 24 O 23 21 2 7 12 13 1 xx -' t t 14 15 16 17 18 19 1:1 El \ / ODTLOT B ❑❑❑❑❑ 1:1 �., \\ C ROW f STREET B O i 50 8 ❑ ❑ ❑ ❑ ❑ ❑ 3 2 4 4 - 0 10 8 7 8 5 4 0 i 3 it 20 �B1e 0 �❑ El � OUTLOT C 2 � / v 1 ❑ I 0 1 4 5 8 7 8 i SPRINGFIELD DRIVE b SHEETINDEX 1. COVER SHEET 2. EXISTING CONDITIONS 3. PRELIMINARY PLAT 4. SITE PLAN 5 -7. GRADING PLAN 8 -9. GRADING DETAILS 10. EROSION CONTROL PLAN 11. EROSION CONTROL DETAILS 12. SANITARY & WATER PLAN 13. STORM SEWER PLAN TR 1 -4. TREE PRESERVATION PLAN LS 1 -2. LANDSCAPE PLAN PREPARED BY PIONEER ENGINEERING, P.A. BRIAN N. MOLINARO REGISTERED PROFESSIONAL CIVIL ENGINEER 47504 REG. NO. REGISTERED PROFESSIONAL LAND SURVEYOR 19828 REG. NO. DEVELOPER JOE JABLONSKI LENNAR 935 EAST WAYZATA BLVD. WAYZATA, MINNESOTA 55391 952- 249 -3014 LOCATION MAP BENCHMARK TNH SPRINGFIELD LOT 10 -11 BILK 1 ELEV= 924.90 0 50 too 200 GRAPHIC SCALE IN FEET 110211- PRE- CNR.DWG © 2010 Pioneer Engineering • LAKE RILEY 1 1 NORTH BAY DNR 10 -2P rs _� \ OHW 865.3 WETLAND X0°9, \ \ \\ \ MANAGEMENT CLASS "IMPROVE" �OHW =865.3 o , 1 ; \ ' -- � 1 ` _ � \� \\ � � •� mss. I WETLAND DNR 10 -213W MANAGE „2., �Pa 20' BUFFER % 30' S.B. TO BUFFER \ \\ N I . , , - \,•\ t _ a \ i ii /i \ I / f $ 1000 REL All r , " I I t i, I _ z ' - o = CMm YY. o PIONEERMineeri 2422 Enterprise Drive wm.vnveroxs (651) 681 -1914 Mendota Heights, MN 55120 Fax: 681 -9488 w.pion eng.wm 0 50 100 200 GRAPHIC SCALE IN FEET 110211 PN&Ertsl'P1GCO MONS.DwG ` �� RtCE �` lfVgR D SPRINGFIELD / DRIVE i f�•fJ • • • U7 \ S C r' RILE, OF `n SECTIONE,�APALFAKE- 1347 \ 1170 1 2 164 48 q 836 69 7 1 , -_ _ n n y 1 L.'T 1 1 11917 SF 'd fi0 I \ \ _ -- , - -- - - - - - - 1 1 156 - 14934 SF �h °° sp BI gl1/ 149 RIG >> 40 sf �0 m ti y OU �f l/q ERNNALF WAY LINE 1 ` 1 1 1 1 "2 ^41"a �p ?7o 7q Rp \ `EG71oN MAP v I 11 a 9 C7 54 68 10 ^o ° o sy \ �1 396 h4 L.`n, G � 38oh 4a 20 6 SjRFF ep I �y > e m 36 T A 8 37 e < I I C. 7 PROPOSED DRAINAGE AND UTILITY "� 110' 50 \ I 50 eA� EASEMENTS ARE SHOWN THUS: 1 92 e8 42 s, OUTLOT D 22577 SF O 6 06 fY` 28 6 0.5183 AC 42 . t OUTLOT A 16612 SF 0 65 54 _ 5 1 �7Yy9C 1A m N 453 SF 630265 SF 9 16 14.4689 AC 1 1 i 29 a m e 11 i> 35 s �y11 5 O m _ - - - -- - - - -.J L---- L - - - -- 1 ft 55 30 m m N u 4 1' 15015 SF 60 170 I being 5 feet in Width, and adjoining lot lines 53 r6 3 5 �4 32 w 33 0 34 1 127 16313 SF unless otherwise indicated, and 10 feet in width I ��,� s j'�t 35 49 33 65 4 and adjoining right of way lines and rear lot C� bo lines unless otherwise shown on the plat. I Ft 46 I STREETI D 166 `2 65 15310 SF 26 25 43 63 [� - i 9 96 22 65 65 95 60 o 3 I w G I - I C� J �2 7 = r0 4 23 22 21 V DRAINAGE AND \ \ [ 20 w , .UTILITY EASEMENT <C y_ 174 15089 SF r � — `a n m n I q N r 2 TOTAL AREA 50.8428 ACRES I f± �' 9D L as 65 \ 7p ^ 3 6 77 ss 6F TOTAL R.O.W. AREA 6.8632 ACRES I rj - 13 65 65 65— 65 58 p y 166 SF mm _ _ _ W TOTAL LOT AREA 19.2989 ACRES 1 "Z 371 T � [ 3 1 95 ST REET TOTAL OUTLOT AREA 24.6807 ACRES I m m _ m Im m _ 19 �r 'per g OUTLOT B 19317 SF o, a 1 SF ; '- TOTAL OUTLOTS 4 I ��, A 6J w 14 15 16 117 1 ;-,a q ja2 I16 5 210385 SF v 0 4.8297 AC s ry n JI 00 65 65 65 65 65 90 • 29 p 'S° N 1 ^= NUMBER OF LOTS 66 I 00 LARGEST LOT 19,317 SQ. FT. 30 STREET B I - I SMALLEST LOT 9,044 SO. FT. ` 65 75 75 c' 69 ry 5 e 1 .6 i Sg o 6 o d• AVERAGE LOT 12,737 SO. FT. I 1 f26 I ]5 75 63 4 �, 3 N " aO ST I m N el m4 �; � J GROSS DENSITY EXCLUDES OUTLOTS 2.5227 LOTS /ACRE " s 1 11 ' 1 0� 9 ' ° 8 N 7 ° o 6 ° o 5 u` r e` - 4 NET DENSITY EXCLUDES OUTLOTS & R W — — 3.4199 LOTS /ACRE I ey m — N '0352 sv 27 6 A3 30 65 75 75 PROPOSED ZONING RLM I L 77 610 ]9 1 Al 3 _ e°j 3 � __- 1 i 75 03 78 60 �' 7 J9 h� 77 105 33 •, UTILITIES AVAILABLE I 90 177 I 5a SF V =>> sF s / 91 2 " 1 71 J 6 N n 4 60 20 (l e� ' 44 61 29. n y 7 43 30 II OUTLOT C 9 F Q Et/ 9gga 2 SF 5 6 V J 211866 SF 1 91 'n n N ter, ` 4.8638 AC - 748 f b `� .� h r �` o r .T; J 60 1 f_ _ -- -- 8 14645 SF I �; 13906 SF m - ` � e L .1 795 I 6 14 J "` ` 74 6 . 1 9 1 1 26 1584 'DRAINAGE AND UTILITY EASEMENT 1 1 i I '^ D n„DI Leaal Descriolion for Preliminary Plat Purooses Only 100 50 0 100 GRAPHIC SCALE IN FEET PIONEERengineering Drive (651) 681 -1914 2422 Enterprise Fax: 681 -9488 Mendota Heights, MN 55120 W W pichimcng.com n 2010 Pimrrrr Fnemeedne 11011- PREPLAT.DWa M All that part of Government Lot 2 and the Northwest Quarter of the Northeast Quarter of Section 24, Township 116, Range 23. Carver County. Minnesota, lying south of MINNESOTA DEPARTMENT OF TRANSPORTATION RIGHT OF WAY PLAT NO. 10 -17, according to the recorded plot thereof, said Carver County and lying northerly of the centerline of Lyman Boulevard per Doc. No. T90333 and 189939. Said centerline is described as follows: Beginning al the west quarter con of said Section 24; thence South 89 degrees O8 m nines 52 seconds East, where the east -west quarter line bears r Soulh 89 degrees 47 nn nu tes 54 s onds East, a distance of 2186.62 feet; thence asterly, o distance of 28.00 feet, along a tangential c e to the north, hoeing a rodius of 800.00 feel and entral angle of 02 degrees 00 m nines 19 seconds; thence North 88 degrees 50 m notes 49 seconds East, a distance of 629.36 feel; thence easterly, o distance of 11.92 feet, oI ong o tngen oti ve, ol Cur c a to th¢ south, hoeing o radius of 800.00 feel and a central angle of 00 degrees 51 m notes 14 s onds; thence North 89 degrees 42 nnirutes 03 seconds East, a distance of 592.50 feet: thence northeasterly, o n tlistace of 550.91 feel, along o tongentiol curve, concave to the northwest, having o radius of 450.00 feet antl a central angle of 70 degrees 08 nutes 38 s e f onds; thence North 19 degrees 33 minutes 26 seconds East, a distance of 149.08 feel: thence northeasterly, easterly and southeasterly, a distance of 954.67 feet. along a tangential curve, o e to the south, hwmg a radius of 510.00 feel and a central angle of 107 degre s 15 minutes 06 seconds old there le—motmg. U • • LAKE RILEY NORTH BAY DNR 10-2P I W7 OHW 865,3 WETLAND MANAGEMENT CLASS "IMPROVE" ( Wy S%41 OHW-865.3 .. .. ...... 41 1 11917 12 A: 14934 sF�� TNINY lo 40 TLAND CONSERVATION SIGN 39 8 3773 s, 8 A. — sF B 3152 s, 7 38 ni ° s Y F 1, 17- WETLAND 9B. 5F 1 16333 DNR 10-21131 • 36 MANAGE "2 5' SiDEwALX 6 C, 20' BUFFER ---- OUTL ND G A 11 s' — 30' S.B. TO 4615 5F BUFFER 28 29 30 A' 11— s IF 4 32 35 `8153 33 11� sr s' o A: 9- SF 3392 Y 11 B. 2 A A SF �l 9526 V . 375 1— Y -- --- --- ------ 4 OUTLOT A 11311 407. sF EE 7 1 10 V 3 f A SF! I B: 5261 sF I 3459 sF B: 3995 Y 26 25 27 24 22 21 20 I , A� 1 (5)23 ------- - - - - - - - - - - - - - - - - - - - - - - 12 13 — ----- —- OUTLOT B -- ------ --- --- --- 1 1 4 15 16 17 18 19 12 ' I A! 19317 sF 8� 9 ��32 �v 4.31 �f 7. u A 7 sF & V 1. 972 _4 v 34. � sF sl ----------- - — - - - - - STREET—B 1 15257 sr 8 5310 V 1 5 SH OREL AND '424'1'9' 12— V '8: y' ® O VERLAY V 1 10— U A: 22 $F 2 A ,0500 A. 10511 SF A 2 112" U 5 V 8: 3675 $F 8 3753 _4 5' SIDEWALK 9 8 7 6 5 4 1 A: I 13 SF --- ----------- ------- ---------- ------- ---- 2� sf --- --------------- 3 A: V A. 13512 sF B. 2, sF yA: 94-o v 1 .721 OUTLOT C ---------- s' 2 1 8, " �M9 �Y Ve. 15995 % 14 ; — 1 31 s126 Y e: SETBACKS F - — — — — — — — — — — — — — — — — — — — — — — — — — — 1 5 6 7 a SHORELAND ZONING RLM ZONING . ........... .. Front: Front: Garage foundation to R-O-W =25 Garage foundation to R-O-W =25 House foundation to R-O-W =25 House foundation to R-O-W =25 Side =T-Garage 10'- Building Side =5'-Garage 10'-Building Rear-25' Rear -25' Min Area: Min Area: Lot Area =15,000 SF Lot Area =9,000 SF Lot Width: Lot Width: Lot Width =90' @ Front Setback Lot Width =65'@ Front Setback Max Impervious Coverage=25% Max Impervious Coverage=35% PISNEERminee?ing 2422 E nt erprise Drive (65 ) 681-1914 71-uyu- y di oI. H Mend igh,s, MN 55120 F..: 681-9488 w—pion—g.com -WETLAND BUFFER -WETLAND BUFFER SETBACK 0 -WETLAND CONSERVATION SIGN F -------- -- 10— IuPERNWS 3280 SO.FT. TOTAL IuPER1nWS JI51 11 TOTAL I uPERxWS �2�781 SOFT. T—L IPE_RZOTS3�395 SOFT. ioiAt —T. 1--s 1, 1.., 1.11—s 51 70- S lKR 610 so- TOrAL 1KRIeUS 2891 SO- ............ TOM =3907 SO.ET. T I—R—S 2832 S..FT, 101AL WPM-1 141 lQ.FT. TOTAL 11PER—S 3359 FT IT TO —ERTDA SOFT, 70- =2— T, T E=0�v$ 3149 rT. 10— I uPER9IW ' 3 —T. j L1 11 B: 7675 Y OxvABtE — T.- XEIMNl9 SPRINGFIELD C DRIVE SUBDIVISION DATA SUMMARY: TOTAL GROSS AREA: 50.48 ACRES TOTAL NUMBER OF LOTS: 66 GROSS DENSITY: 1.307 UNITS/ACRE TOTAL PARK AREA: 4.83 ACRES (OUTLOT B) TOTAL PUBLIC ROW AREA: 6.86 ACRES TOTAL WETLAND AREA: 10.40 ACRES (DNR WETLAND 10-213W) TOTAL NET AREA: 28.39 ACRES (GROSS-PARK-ROW-WETLAND) NET DENSITY: 2.32 UNITS/ACRE 0 50 100 200 GRAPHIC SCALE IN FEET 110211-PRE-SM.DWG • • • • 0 ISEE SHEET 5] ....... .... 9 0 17 7. • -k)UTLP,T. • .._ .. . ... - / fE, ., F > 0 7.3 4LJ j 19 m 0 0 98. z FOF J C5 0 715 ox S V EOF X i / /6 \ 4 j i `4 WETLAND CONSERVATION SIGN A - 890 o b 90 2 86 6 WATER QUALITY BASIN 200 NWL=866.00 HWL=869.27 BOTTOM=856.00 WET VOL-1.828ACFT '2 STORAGE VOL-1.917ACFT 19 0 3 AREA OF DRAINAGE= 1 8.658AC AREA NWL=0.494AC U. WETLAND -213W MANAGE "2" 5 20' BUFFER j 888 30' S. B. TO BUFFER /�ETLAND ZO'-..W ETLAND BUFFER OUTLOT A 0 SETBACK TO WETLAND 'BUFFER . 4 . 4 8 96 6 6 //� .� A, 9.> 2' SEE SHEET 7 P18NEERmineeting 2422 Enwpfi�� D6- (651) 681-1914 o F-: 681-9488 Mend Heights, NN 55120 —.p,..—ng.-. 0 25 50 100 GRAPHIC SCALE IN FEET 11021 I-PRE-GRDWG ■ • • • LEGEND EXISTING PROPOSED DESCRIPTION ® CATCH BASIN 0 MANHOLE D ® FLARED END ® ® BEEHIVE — — — << — -- EXISTING STORM SEWER <C PROPOSED STORM SEWER m Em mm no no in PHASE LINE - - — — -- EASEMENT LINE EXISTING 2' CONTOUR LINE 90] son - -- EXISTING 10' CONTOUR LINE —9oz PROPOSED 2' CONTOUR LINE PROPOSED 10' CONTOUR LINE '' L POND OUTLET LINE POND HIGH WATER LINE 8 z 3 — PROPOSED SPOT ELEVATION EMERGENCY OVERFLOW — ' - -" —"— DELINEATED WETLAND LINE FEMA FLOODPLAIN BOUNDARY • ' ' ' ' ' • ' • ' ' ' ' ' ' STANDARD EROSION CONTROL • • • • • • HEAVY -DUTY EROSION CONTROL TREE FENCE wu� PROPOSED /EX. RET WALLS T C CONSERVATION AREA SIGN T WETLAND BUFFER SIGN W O EX. SANITARY OR STORM MH m EX. GATE VALVE gY EX. HYDRANT S m EX. SERVICE sv EX. LAWN SPRINKLER VALVE EX. LAWN SPRINKLER HEAD e EX. WATER WELL EX. CULVERT `.' l'•( - Y' `! Y \. EX. TREE LINE — oh oh — EX. OVERHEAD UTILITY LINES — tv tv — EX. UNDERGROUND TELEVISION —tel tel EX. UNDERGROUND TELEPHONE —fo fo— EX. FIBER OPTIC LINE —ue ue— EX. ELECTRIC LINE — 9 9 — EX. UNDERGROUND GAS — X X — EX. FENCE LINE ❑ EX. ELECTRIC BOX O EX. ELECTRIC BOX i EX. MONITORING WELL p EX. TELEPHONE BOX ® EX. TELEVISION BOX — EX. UTILITY POLE o EX. LIGHT POLE 0 EX. TEST HOLE ® EX. MAILBOX --� EX. SIGN ROADWAY IMPROVEMENTS RIGHT —OF —WAY LINE BITUMINOUS PATH - - -- CENTERLINE CURB LINE CONCRETE WALK SETBACK LINE EX. GRAVEL SURFACE EX. BITUMINOUS SURFACE EX. CONCRETE SURFACE = SELECT BACKFILL MATERIAL ^l GRAVEL CONST. ENTRANCE 0 25 50 100 GRAPHIC SCALE IN FEET PISNEERen 2422 Enterprise Drive (651) 681 -1914 Mendota Heights, MN 55120 Fax: 681 -9488 w.pioneereng.com 110211- PRE- GR.DWG SEE SHEET 6 < 1 V V' _ J _ - WATER QUALITY BASIN 200 NWL= 866.00 HW BOTTOM 9 856.00 k / WET VOL.=1.828ACFT STORAGE VOL.= 1.917ACFT \ s9p \, n 8• ti /, / • -.� / AREA OF DRAINAGE= 18.658AC \ \\ \ 3 \ _- -� m AREA NWL= 0.494AC 4 / .ss6 N� /. WET-LAND , / NR 10 -213W O MANAGE "2•. s8s \ V 5..... r a69 BUFFER S Rf ., \ ` ° 888 — a SE.oF \ 30' S.B. TO BUFFER TLAND r 0;r 20!- WETLAND BUFFER OUTLOT A SETBACK TO WETLAND BUFFER \ X93 � C ��9m . {'• \, 9.> 5' \ s 2 3 / » I ` I ' I f o3 ea OUTLQT B u • 65' TOPSOIL ARIES 3.0' GRA DING GRADE PROPOSED FINISHED GRADE r EXISTING GRADE 7 z o O o 0 LOT PROFILE _ ol DIRECTION OF FLOW _ STREET PROFILE DIRECR FL OW OH S oES O.5• 0.5' LOT BENCHING DETAIL NO SCALE 1. THE SIZE OF EACH FILL OPERATION WILL BE DETERMINED BY THE QUANTITY OF SOIL IMPORT, 2. EACH PHASE WILL CONSIST OF THE GRADING SEQUENCE OUTLINED BELOW. GRADING SEQUENCE 1. DETERMINE SIZE OF FILL AREA BASED ON AVAILABLE SOIL 2. INSTALL ROCK CONSTRUCTION ENTRANCE 3. INSTALL PERIMETER SEDIMENT CONTROL DEVICES (SILT FENCE). 4. STRIP TOPSOIL, STOCKPILE AND STABILIZE IN BERM FOR FUTURE SPREADING. 5. DIG TEMPORARY SEDIMENT BASIN, BASIN TO BE 1800 CF /ACRE OF AREA STRIPPED. CLEAN TEMP BASIN ONCE 505 FULL. 6. ALL SOIL WILL BE TESTED FOR SUITABILITY FOR FILL PER THE BORROW PIT RECLAMATION PROTOCOL PRIOR TO BEING BROUGHT ONSITE. 7. ALL SOILS WILL BE COMPACTED PER THE BORROW PIT RECLAMATION PROTOCOL. 8. MAINTAIN DRAINAGE DURING GRADING OPERATION TO TEMPORARY SEDIMENT BASIN. 9. COMPLETE SITE GRADING PER PLAN. 10. RESPREAD TOPSOIL MAINTAIN A MINIMUM OF 9 DEPTH. 11. MAINTAIN DRAINAGE TO TEMP SEDIMENT BASIN UNTIL NEXT PHASE BEGINS. 12. STABILIZE DENUDED AREAS AND STOCKPILES WITHIN TIME FRAME LISTED IN EROSION PREVENTION PRACTICES GENERAL NOTES I. CONTRACTOR TO ADHERE TO ALL REQUIREMENTS OF THE MINNESOTA POLLUTION CONTROL AGENCY N. P.D.E.S. PERMIT, INCLUDING THE REQUIREMENT TO MINIMIZE THE AREA DISTURBED BY GRADING AT ANY GIVEN TIME AND TO COMPLETE TURF RESTORATION THE TIME REWIRED BY THE PERMIT AFTER COMPLETION OF 2. A COPY OF THESE PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 3. BMP'S REFER TO EROSION AND SEDIMENT CONTROL PRACTICES DEFINED IN THE MPCA PROTECTING WATER QUALITY IN URBAN AREAS AND THE MINNESOTA CONSTRUCTION SITE EROSION AND SEDIMENT CONTROL PLANNING HANDBOOK. 4. ALL EROSION AND SEDIMENT CONTROL FACILITIES (BMP'S) SHALL BE INSTALLED AND IN OPERATION PRIOR TO LAND DISTURBANCE ACTIVITIES. SOME EROSION CONTROLS SUCH AS CHECK DAMS AND TEMPORARY SILT PONDS MAY BE INSTALLED AS GRADING OCCURS IN THE SPECIFIC AREA. THEY SHALL BE MAINTAINED UNTIL CONSTRUCTION IS COMPLETED AND THE POTENTIAL FOR EROSION HAS PASSED. 5. THE BMP'S SHOWN ON THE PLANS ARE THE MINIMUM REQUIREMENTS FOR THE ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE. THE PERMITTEE SHALL ANTICIPATE THAT MORE IMP'S WILL BE NECESSARY TO ENSURE EROSION AND SEDIMENT CONTROL ON THE SITE. DURING THE COURSE OF CONSTRUCTION, IT IS THE RESPONSIBIUTY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY CONSTRUCTION ACTIVITIES AND /OR CLIMATIC EVENTS AND TO PROVIDE ADDITIONAL BMP'S OVER AND ABOVE THE MINIMUM REQUIREMENTS SHOWN ON THE PLANS THAT MAY BE NEEDED TO PROVIDE EFFECTIVE PROTECTION OF WATER AND SOIL RESOURCES. 6. ALL TREES NOT LISTED FOR REMOVAL SHALL BE PROTECTED. DO NOT OPERATE EQUIPMENT' WITHIN THE DRIP LINE. ROOT ZONES OR WITHIN TREE PROTECTION FENCE AREAS. 7. WHEREVER POSSIBLE, PRESERVE THE EXISTING TREES. GRASS AND OTHER VEGETATIVE COVER TO HELP FILTER RUNOFF. 8. OPERATE TRACK IPN P EAC E N7 (DOZER) U AND DO WN EXPOSE SOIL SLOPES ON FINAL PASS, LEAVING TRACK GROOVES ES E R PERPENDICULAR TO THE SLOPE. DO NOT BACK- BLADE. LEAVE A SURFACE ROUGH TO MINIMIZE EROSION. 9. TEMPORARY SEED SHALL BE DONE IN ACCORDANCE TO MNDOT 2575 & 387,; CONSISTING OF: • MNDOT MIX 150 O 40 LBS. PER ACRE OR APPROVED EQUAL. • MULCH SHALL BE MNDOT TYPE 1 O 2 TONS PER ACRE OR APPROVED EQUAL AND DISK ANCHORED IN PLACE OR APPROVED EQUAL. INSTALLED TO MINIMUM 905 COVERAGE OF THE SURFACE AREA DISTURBED. • TYPE 1 FERTILIZER, 10 -I0-20 O 200 LBS. PER ACRE 10. PERMANENT TURF RESTORATION SHALL BE DONE IN ACCORDANCE WITH MNDOT 2575 & 3876 CONSISTING OF: • MNDOT MIXTURE 240 AT 75 POUNDS PER ACRE. • MULCH SHALL BE MNDOT TYPE 1 O 2 TONS PER ACRE OR APPROVED EQUAL AND DISK ANCHORED IN PLACE OR APPROVED EOUAL, INSTALLED TO MINIMUM 90% COVERAGE OF THE SURFACE AREA DISTURBED.MULCH AT 90 % COVERAGE WITH DISC ANCHOR. TYPE 3 FERTILIZER. 22 -5 -10 80%W.I.N O 350 LBS PER ACRE. 11. SLOPES AT 3:1 OR STEEPER, AND /OR WHERE INDICATED ON THE PLANS SHALL BE SEEDED AND HAVE AN EROSION CONTROL BLANKET TYPE 3 INSTALLED OR MAY BE HYDROSEEDED WITH TACKIFER MULCH. 12. THE CONTRACTOR SHALL REMOVE ALL SOILS AND SEDIMENT TRACKED ONTO EXISTING STREETS AND PAVED AREAS. 13. IF BLOWING DUST BECOMES A NUISANCE, THE CONTRACTOR SHALL APPLY WATER FROM A TANK TRUCK TO ALL CONSTRUCTION AREAS. 14. WITHIN 7 DAYS OF COMPLETION OF THE SITE GRADING OPERATIONS THE ENTIRE SITE (EXCEPT ROADWAYS) SHALL HAVE BEEN SEEDED AND MULCHED AND SILT FENCE SHALL INSTALLED AROUND ALL PONDS. 15. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE PROPERLY DISPOSED OF WITHIN THIRTY (30) DAYS AFTER FINAL SITE STABILIZATION IS ACHIEVED OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED. CONSTRUCTION ACTIVITY REQUIREMENTS A. EROSION PREVENTION PRACTICES 1. THE CONTRACTOR SHALL IMPLEMENT CONSTRUCTION PHASING, VEGETATIVE BUFFER STRIPS. HORIZONTAL SLOPE GRADING. AND OTHER CONSTRUCTION PRACTICES THAT MINIMIZE EROSION. THE LOCATION OF AREAS NOT TO BE DISTURBED MUST BE DELINEATED (E.G. WITH FLAGS. STAKES. SIGNS, SILT FENCE, ETC.) ON THE DEVELOPMENT SITE BEFORE WORK BEGINS. 2.ALL EXPOSED SOIL AREAS WITHIN 200 FEET OF A SURFACE WATER OR ANY STORMWATER CONVEYANCE SYSTEM WHICH IS CONNECTED TO A SURFACE WATER MUST BE STABILIZED WITHIN 7 DAYS (STEEPER THAN 3:1 SLOPES). 14- DAYS (10:1 TO 3:1 SLOPES). OR 21 DAYS (FLATTER THAN 10:1). THESE AREAS INCLUDE POND SIDE SLOPES. EXPOSED SOIL AREAS WITH A POSITIVE SLOPE TO A CURB AND GUTTER SYSTEM, STORM SEWER INLET, DRAINAGE DITCH, OR OTHER SYSTEM THAT DISCHARGES TO A SURFACE WATER. 3.THE NORMAL WETTED PERIMETER OF ANY DRAINAGE DITCH MUST BE STABILIZED WITHIN 200 LINEAL FEET FROM THE PROPERTY EDGE. OR FROM THE POINT OF DISCHARGE TO ANY SURFACE WATER (WITHIN 24 HOURS OF CONNECTING TO A SURFACE WATER). 4.PIPE OUTLETS MUST BE PROVIDED WITH TEMPORARY. OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS OF CONNECTION TO A SURFACE WATER. B. SEDIMENT CONTROL PRACTICES I.SEDIMENT CONTROL PRACTICES MUST MINIMIZE SEDIMENT ENTERING SURFACE WATERS. DITCHES AND SEGMENT BASINS REWIRE SEDIMENT CONTROL PRACTICES ONLY AS APPROPRIATE FOR SITE CONDITIONS. IF DOWN GRADE SYSTEM IS OVERLOADED. ADDITIONAL UPGRADE PRACTICES MUST BE INSTALLED, AND THE SWPPP MUST BE AMENDED. THERE SHALL BE NO UNBROKEN SLOPE LENGTH OF GREATER THAN 75 FEET FOR SLOPES WITH A GRADE OF 3:1 OR STEEPER. SLOPES MAY BE BROKEN WITH SILT FENCE, ROCK CHECK DAMS, COMPOST SNAKES, OR OTHER APPROVED METHODS AND /OR AS SHOWN ON THE EROSION CONTROL PLAN. 2.SEDIMENT CONTROL PRACTICES MUST BE ESTABLISHED ON DOWNGRADE PERIMETERS BEFORE UPGRADE LAND DISTURBING ACTIVITIES BEGIN. 3. THE TIMING OF SEDIMENT CONTROL PRACTICES MAY BE ADJUSTED TO ACCOMMODATE SHORT TERM ACTIVITIES. HOWEVER, THESE PRACTICES MUST BE INSTALLED BEFORE THE NEXT PRECIPITATION EVENT EVEN IF THE ACTIVITY IS NOT COMPLETE. 4.CONTRACTOR MUST PROTECT ALL STORM DRAIN INLETS BY APPROPRIATE BMP'S DURING CONSTRUCTION UNTIL ALL SOURCES WITH POTENTIAL FOR DISCHARGING TO THE INLET HAVE BEEN STABILIZED. 5.TEMPORARY STOCKPILES MUST HAVE SILT FENCE AROUND THE PERIMETER OF THE BASE OF THE STOCKPILE AND CANNOT BE PLACED IN SURFACE WATERS, INCLUDING STORM WATER CONVEYANCES SUCH AS CURB AND GUTTER SYSTEMS, OR CONDUITS OR DITCHES. &CONTRACTOR MUST INSTALL TEMPORARY (OR PERMANENT) SEDIMENTATION BASINS WERE TEN OR MORE ACRES OF DISTURBED SOIL DRAIN TO A COMMON LOCATION AND /OR AS SHOWN ON THE EROSION CONTROL PLAN. C. OE WATERING AND SURFACE DRAINAGE i.DEWATERING OR ANY TYPE OF SURFACE DRAINAGE THAT MAY HAVE TURBID OR SEDIMENT LADEN DISCHARGE WATER MUST BE DISCHARGED TO AN APPROVED SEDIMENT BASIN ON THE PROJECT SITE WHENEVER POSSIBLE. IF THE WATER CANNOT BE DISCHARGED TO A BASIN PRIOR TO ENTERING THE SURFACE WATER, IT MUST BE TREATED WITH THE APPROPRIATE BMP'S SUCH THAT THE DISCHARGE DOES NOT ADVERSELY AFFECT THE RECEIVING WATER OR DOWNSTREAM LANDOWNERS. THE CONTRACTOR MUST ENSURE THAT DISCHARGE POINTS ARE ADEQUATELY PROTECTED FROM EROSION AND SCOUR. THE DISCHARGE MUST BE DISPERSED OVER NATURAL ROCK RIP RAP. SAND BAGS. PLASTIC SHEETING, OR OTHER ACCEPTED ENERGY DISSIPATION MEASURES. 2.ALL WATER FROM DEWATERING MUST BE DISCHARGED IN A MANNER THAT DOES NOT CAUSE NUISANCE CONDITIONS. EROSION. OR INUNDATION OF WETLANDS CAUSING SIGNIFICANT ADVERSE IMPACT TO THE WETLAND. 0. INSPECTIONS AND MAINTENANCE L THE CONTRACTOR MUST APPOINT SOMEONE TO INSPECT THE CONSTRUCTION SI7E ONCE EVERY SEVEN DAYS DURING ACTIVE CONSTRUCTION AND WITHIN 24 HOURS AFTER A RAINFALL EVENT OF GREATER THAN 0.5 INCHES IN 24 HOURS. ALL INSPECTIONS MUST BE RECORDED IN WRITING AND RETAINED PER M.P.C.A. N.P.D.E.S. REQUIREMENTS. (NOTE: LOCAL JURISDICTION MAY REQUIRE A MORE FREQUENT INTERVAL OF INSPECTION.) E. POLLUTION PREVENTION MANAGEMENT MEASUR I.SOLID WASTE MUST BE DISPOSED OF PER M.P.C.A. REQUIREMENTS. 2.HAZARDOUS MATERIALS MUST BE STORED AND DISPOSED OF PER M.P.C.A. REGULATIONS. 3.EXTERNAL WASHING OF CONSTRUCTION VEHICLES MUST BE LIMITED TO A DEFINED AREA OF THE SITE. RUNOFF MUST BE CONTAINED AND WASTE PROPERLY DISPOSED OF. NO ENGINE DECREASING IS ALLOWED ON SITE. SELECT BACKFILL J �� LIMIT OF SUBGRADE EXCAVATION MATERIAL SELECT BACKFILL MATERIAL _ HSZ PgP.O,P1N1' COMPACTED BACKFILL OPO°f U \ 10' qf4 T - NON- SELECT BACKFILL MATERIAL NON- SELECT BACKFILL M M 0' ATERIAL COMPACTED BACKFILL COMPACTED BACKFILL A IN BOTTOM OF U STAB ATERIAL SUBGRADE CORRECTION DETAIL NO SCALE PIONEERmgineeTing 2422 Enterprise Drive (651) 681 -1914 Mendota Heights, MN 55120 Fa 681 -9488 W ww.pion rig... 25' 29.0 - - - - - - - - - - 28.0 DRAINAGE & UTILITY EASEMENT I O I I I BLOCK NO. 25' 25' 35' R LOWEST OPENING I w , SETBACK ELEVATION 7 LOT NO. �°- TYPICAL POND SECTION R LOWEST FLOOR I ELEVATION " 31 I HOUSE TYPES r t BERM � 4 1� GROUND ELEVATION R '0 1 LO RAMBLER OR SPLIT ENTRY - RAMBLER LOOKOUT OR SPLIT 10:1 10:1 �I ® BUILDING -g ENTRY WALKOUT -- - -- -N -- - - -C 3 I WO - RAMBLER WALKOUT 3 3 RECOMMENDED I LO SLO -SIDE LOOKOUT v, GARAGE SIDE SWO -SIDE WALKOUT 1 t 10' 10' G 937.0 1 BOTTOM FINISHED ELEVATION I INSTALL MNDOT CATAGORY 2 LOT CORNER L - - - - - - - - - - J EROSION CONTROL BLANKET VARIES N 10' 0 35.5 34.5 10' ON DITCH SLOPES & BERM 10' ° House foundation to R -O -W =25 STREET 0.5' TOPSOIL LOT INFORMATION HOLD DOWN (TYPICAL SECTION NOT TO SCALE) a5' 65' TOPSOIL ARIES 3.0' GRA DING GRADE PROPOSED FINISHED GRADE r EXISTING GRADE 7 z o O o 0 LOT PROFILE _ ol DIRECTION OF FLOW _ STREET PROFILE DIRECR FL OW OH S oES O.5• 0.5' LOT BENCHING DETAIL NO SCALE 1. THE SIZE OF EACH FILL OPERATION WILL BE DETERMINED BY THE QUANTITY OF SOIL IMPORT, 2. EACH PHASE WILL CONSIST OF THE GRADING SEQUENCE OUTLINED BELOW. GRADING SEQUENCE 1. DETERMINE SIZE OF FILL AREA BASED ON AVAILABLE SOIL 2. INSTALL ROCK CONSTRUCTION ENTRANCE 3. INSTALL PERIMETER SEDIMENT CONTROL DEVICES (SILT FENCE). 4. STRIP TOPSOIL, STOCKPILE AND STABILIZE IN BERM FOR FUTURE SPREADING. 5. DIG TEMPORARY SEDIMENT BASIN, BASIN TO BE 1800 CF /ACRE OF AREA STRIPPED. CLEAN TEMP BASIN ONCE 505 FULL. 6. ALL SOIL WILL BE TESTED FOR SUITABILITY FOR FILL PER THE BORROW PIT RECLAMATION PROTOCOL PRIOR TO BEING BROUGHT ONSITE. 7. ALL SOILS WILL BE COMPACTED PER THE BORROW PIT RECLAMATION PROTOCOL. 8. MAINTAIN DRAINAGE DURING GRADING OPERATION TO TEMPORARY SEDIMENT BASIN. 9. COMPLETE SITE GRADING PER PLAN. 10. RESPREAD TOPSOIL MAINTAIN A MINIMUM OF 9 DEPTH. 11. MAINTAIN DRAINAGE TO TEMP SEDIMENT BASIN UNTIL NEXT PHASE BEGINS. 12. STABILIZE DENUDED AREAS AND STOCKPILES WITHIN TIME FRAME LISTED IN EROSION PREVENTION PRACTICES GENERAL NOTES I. CONTRACTOR TO ADHERE TO ALL REQUIREMENTS OF THE MINNESOTA POLLUTION CONTROL AGENCY N. P.D.E.S. PERMIT, INCLUDING THE REQUIREMENT TO MINIMIZE THE AREA DISTURBED BY GRADING AT ANY GIVEN TIME AND TO COMPLETE TURF RESTORATION THE TIME REWIRED BY THE PERMIT AFTER COMPLETION OF 2. A COPY OF THESE PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 3. BMP'S REFER TO EROSION AND SEDIMENT CONTROL PRACTICES DEFINED IN THE MPCA PROTECTING WATER QUALITY IN URBAN AREAS AND THE MINNESOTA CONSTRUCTION SITE EROSION AND SEDIMENT CONTROL PLANNING HANDBOOK. 4. ALL EROSION AND SEDIMENT CONTROL FACILITIES (BMP'S) SHALL BE INSTALLED AND IN OPERATION PRIOR TO LAND DISTURBANCE ACTIVITIES. SOME EROSION CONTROLS SUCH AS CHECK DAMS AND TEMPORARY SILT PONDS MAY BE INSTALLED AS GRADING OCCURS IN THE SPECIFIC AREA. THEY SHALL BE MAINTAINED UNTIL CONSTRUCTION IS COMPLETED AND THE POTENTIAL FOR EROSION HAS PASSED. 5. THE BMP'S SHOWN ON THE PLANS ARE THE MINIMUM REQUIREMENTS FOR THE ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE. THE PERMITTEE SHALL ANTICIPATE THAT MORE IMP'S WILL BE NECESSARY TO ENSURE EROSION AND SEDIMENT CONTROL ON THE SITE. DURING THE COURSE OF CONSTRUCTION, IT IS THE RESPONSIBIUTY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY CONSTRUCTION ACTIVITIES AND /OR CLIMATIC EVENTS AND TO PROVIDE ADDITIONAL BMP'S OVER AND ABOVE THE MINIMUM REQUIREMENTS SHOWN ON THE PLANS THAT MAY BE NEEDED TO PROVIDE EFFECTIVE PROTECTION OF WATER AND SOIL RESOURCES. 6. ALL TREES NOT LISTED FOR REMOVAL SHALL BE PROTECTED. DO NOT OPERATE EQUIPMENT' WITHIN THE DRIP LINE. ROOT ZONES OR WITHIN TREE PROTECTION FENCE AREAS. 7. WHEREVER POSSIBLE, PRESERVE THE EXISTING TREES. GRASS AND OTHER VEGETATIVE COVER TO HELP FILTER RUNOFF. 8. OPERATE TRACK IPN P EAC E N7 (DOZER) U AND DO WN EXPOSE SOIL SLOPES ON FINAL PASS, LEAVING TRACK GROOVES ES E R PERPENDICULAR TO THE SLOPE. DO NOT BACK- BLADE. LEAVE A SURFACE ROUGH TO MINIMIZE EROSION. 9. TEMPORARY SEED SHALL BE DONE IN ACCORDANCE TO MNDOT 2575 & 387,; CONSISTING OF: • MNDOT MIX 150 O 40 LBS. PER ACRE OR APPROVED EQUAL. • MULCH SHALL BE MNDOT TYPE 1 O 2 TONS PER ACRE OR APPROVED EQUAL AND DISK ANCHORED IN PLACE OR APPROVED EQUAL. INSTALLED TO MINIMUM 905 COVERAGE OF THE SURFACE AREA DISTURBED. • TYPE 1 FERTILIZER, 10 -I0-20 O 200 LBS. PER ACRE 10. PERMANENT TURF RESTORATION SHALL BE DONE IN ACCORDANCE WITH MNDOT 2575 & 3876 CONSISTING OF: • MNDOT MIXTURE 240 AT 75 POUNDS PER ACRE. • MULCH SHALL BE MNDOT TYPE 1 O 2 TONS PER ACRE OR APPROVED EQUAL AND DISK ANCHORED IN PLACE OR APPROVED EOUAL, INSTALLED TO MINIMUM 90% COVERAGE OF THE SURFACE AREA DISTURBED.MULCH AT 90 % COVERAGE WITH DISC ANCHOR. TYPE 3 FERTILIZER. 22 -5 -10 80%W.I.N O 350 LBS PER ACRE. 11. SLOPES AT 3:1 OR STEEPER, AND /OR WHERE INDICATED ON THE PLANS SHALL BE SEEDED AND HAVE AN EROSION CONTROL BLANKET TYPE 3 INSTALLED OR MAY BE HYDROSEEDED WITH TACKIFER MULCH. 12. THE CONTRACTOR SHALL REMOVE ALL SOILS AND SEDIMENT TRACKED ONTO EXISTING STREETS AND PAVED AREAS. 13. IF BLOWING DUST BECOMES A NUISANCE, THE CONTRACTOR SHALL APPLY WATER FROM A TANK TRUCK TO ALL CONSTRUCTION AREAS. 14. WITHIN 7 DAYS OF COMPLETION OF THE SITE GRADING OPERATIONS THE ENTIRE SITE (EXCEPT ROADWAYS) SHALL HAVE BEEN SEEDED AND MULCHED AND SILT FENCE SHALL INSTALLED AROUND ALL PONDS. 15. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE PROPERLY DISPOSED OF WITHIN THIRTY (30) DAYS AFTER FINAL SITE STABILIZATION IS ACHIEVED OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED. CONSTRUCTION ACTIVITY REQUIREMENTS A. EROSION PREVENTION PRACTICES 1. THE CONTRACTOR SHALL IMPLEMENT CONSTRUCTION PHASING, VEGETATIVE BUFFER STRIPS. HORIZONTAL SLOPE GRADING. AND OTHER CONSTRUCTION PRACTICES THAT MINIMIZE EROSION. THE LOCATION OF AREAS NOT TO BE DISTURBED MUST BE DELINEATED (E.G. WITH FLAGS. STAKES. SIGNS, SILT FENCE, ETC.) ON THE DEVELOPMENT SITE BEFORE WORK BEGINS. 2.ALL EXPOSED SOIL AREAS WITHIN 200 FEET OF A SURFACE WATER OR ANY STORMWATER CONVEYANCE SYSTEM WHICH IS CONNECTED TO A SURFACE WATER MUST BE STABILIZED WITHIN 7 DAYS (STEEPER THAN 3:1 SLOPES). 14- DAYS (10:1 TO 3:1 SLOPES). OR 21 DAYS (FLATTER THAN 10:1). THESE AREAS INCLUDE POND SIDE SLOPES. EXPOSED SOIL AREAS WITH A POSITIVE SLOPE TO A CURB AND GUTTER SYSTEM, STORM SEWER INLET, DRAINAGE DITCH, OR OTHER SYSTEM THAT DISCHARGES TO A SURFACE WATER. 3.THE NORMAL WETTED PERIMETER OF ANY DRAINAGE DITCH MUST BE STABILIZED WITHIN 200 LINEAL FEET FROM THE PROPERTY EDGE. OR FROM THE POINT OF DISCHARGE TO ANY SURFACE WATER (WITHIN 24 HOURS OF CONNECTING TO A SURFACE WATER). 4.PIPE OUTLETS MUST BE PROVIDED WITH TEMPORARY. OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS OF CONNECTION TO A SURFACE WATER. B. SEDIMENT CONTROL PRACTICES I.SEDIMENT CONTROL PRACTICES MUST MINIMIZE SEDIMENT ENTERING SURFACE WATERS. DITCHES AND SEGMENT BASINS REWIRE SEDIMENT CONTROL PRACTICES ONLY AS APPROPRIATE FOR SITE CONDITIONS. IF DOWN GRADE SYSTEM IS OVERLOADED. ADDITIONAL UPGRADE PRACTICES MUST BE INSTALLED, AND THE SWPPP MUST BE AMENDED. THERE SHALL BE NO UNBROKEN SLOPE LENGTH OF GREATER THAN 75 FEET FOR SLOPES WITH A GRADE OF 3:1 OR STEEPER. SLOPES MAY BE BROKEN WITH SILT FENCE, ROCK CHECK DAMS, COMPOST SNAKES, OR OTHER APPROVED METHODS AND /OR AS SHOWN ON THE EROSION CONTROL PLAN. 2.SEDIMENT CONTROL PRACTICES MUST BE ESTABLISHED ON DOWNGRADE PERIMETERS BEFORE UPGRADE LAND DISTURBING ACTIVITIES BEGIN. 3. THE TIMING OF SEDIMENT CONTROL PRACTICES MAY BE ADJUSTED TO ACCOMMODATE SHORT TERM ACTIVITIES. HOWEVER, THESE PRACTICES MUST BE INSTALLED BEFORE THE NEXT PRECIPITATION EVENT EVEN IF THE ACTIVITY IS NOT COMPLETE. 4.CONTRACTOR MUST PROTECT ALL STORM DRAIN INLETS BY APPROPRIATE BMP'S DURING CONSTRUCTION UNTIL ALL SOURCES WITH POTENTIAL FOR DISCHARGING TO THE INLET HAVE BEEN STABILIZED. 5.TEMPORARY STOCKPILES MUST HAVE SILT FENCE AROUND THE PERIMETER OF THE BASE OF THE STOCKPILE AND CANNOT BE PLACED IN SURFACE WATERS, INCLUDING STORM WATER CONVEYANCES SUCH AS CURB AND GUTTER SYSTEMS, OR CONDUITS OR DITCHES. &CONTRACTOR MUST INSTALL TEMPORARY (OR PERMANENT) SEDIMENTATION BASINS WERE TEN OR MORE ACRES OF DISTURBED SOIL DRAIN TO A COMMON LOCATION AND /OR AS SHOWN ON THE EROSION CONTROL PLAN. C. OE WATERING AND SURFACE DRAINAGE i.DEWATERING OR ANY TYPE OF SURFACE DRAINAGE THAT MAY HAVE TURBID OR SEDIMENT LADEN DISCHARGE WATER MUST BE DISCHARGED TO AN APPROVED SEDIMENT BASIN ON THE PROJECT SITE WHENEVER POSSIBLE. IF THE WATER CANNOT BE DISCHARGED TO A BASIN PRIOR TO ENTERING THE SURFACE WATER, IT MUST BE TREATED WITH THE APPROPRIATE BMP'S SUCH THAT THE DISCHARGE DOES NOT ADVERSELY AFFECT THE RECEIVING WATER OR DOWNSTREAM LANDOWNERS. THE CONTRACTOR MUST ENSURE THAT DISCHARGE POINTS ARE ADEQUATELY PROTECTED FROM EROSION AND SCOUR. THE DISCHARGE MUST BE DISPERSED OVER NATURAL ROCK RIP RAP. SAND BAGS. PLASTIC SHEETING, OR OTHER ACCEPTED ENERGY DISSIPATION MEASURES. 2.ALL WATER FROM DEWATERING MUST BE DISCHARGED IN A MANNER THAT DOES NOT CAUSE NUISANCE CONDITIONS. EROSION. OR INUNDATION OF WETLANDS CAUSING SIGNIFICANT ADVERSE IMPACT TO THE WETLAND. 0. INSPECTIONS AND MAINTENANCE L THE CONTRACTOR MUST APPOINT SOMEONE TO INSPECT THE CONSTRUCTION SI7E ONCE EVERY SEVEN DAYS DURING ACTIVE CONSTRUCTION AND WITHIN 24 HOURS AFTER A RAINFALL EVENT OF GREATER THAN 0.5 INCHES IN 24 HOURS. ALL INSPECTIONS MUST BE RECORDED IN WRITING AND RETAINED PER M.P.C.A. N.P.D.E.S. REQUIREMENTS. (NOTE: LOCAL JURISDICTION MAY REQUIRE A MORE FREQUENT INTERVAL OF INSPECTION.) E. POLLUTION PREVENTION MANAGEMENT MEASUR I.SOLID WASTE MUST BE DISPOSED OF PER M.P.C.A. REQUIREMENTS. 2.HAZARDOUS MATERIALS MUST BE STORED AND DISPOSED OF PER M.P.C.A. REGULATIONS. 3.EXTERNAL WASHING OF CONSTRUCTION VEHICLES MUST BE LIMITED TO A DEFINED AREA OF THE SITE. RUNOFF MUST BE CONTAINED AND WASTE PROPERLY DISPOSED OF. NO ENGINE DECREASING IS ALLOWED ON SITE. SELECT BACKFILL J �� LIMIT OF SUBGRADE EXCAVATION MATERIAL SELECT BACKFILL MATERIAL _ HSZ PgP.O,P1N1' COMPACTED BACKFILL OPO°f U \ 10' qf4 T - NON- SELECT BACKFILL MATERIAL NON- SELECT BACKFILL M M 0' ATERIAL COMPACTED BACKFILL COMPACTED BACKFILL A IN BOTTOM OF U STAB ATERIAL SUBGRADE CORRECTION DETAIL NO SCALE PIONEERmgineeTing 2422 Enterprise Drive (651) 681 -1914 Mendota Heights, MN 55120 Fa 681 -9488 W ww.pion rig... DETAILS (2) 109244- PRF,0R- DTLS.D WG 25' 25' 35' 60 25' 25' 35' R SETBACKS w , SETBACK R w - SETBACK R Z SETBACK �i (MIN.) FINISHED GRADE �' (MIN.) FINISHED GRADE 1 �I (MIN.) j 85'Wide Single Faraily Lots 75' SINGLE 3 LO GRADING GRADE GRADING GRADE of Front: FAMILY LOTS 0 0 1 R WO Garage foundation to R-O -W =25 10' N 10' 0 6 10' I 10' ° House foundation to R -O -W =25 0.5' TOPSOIL HOLD DOWN a5' 10' ° O5 TOPSOIL RE- SPREAD 10' ° Side =5'- Garage 10'- Building RE- SPREAD I m :r? 0.5' TOPSOIL Rear -25' AND RE- SPREAD Min Area: SETBACKS 2.5` HOLD Lot Area =9,000 SF 2.67' HOLD DOWN 3.0' HOLD DOWN Lot Width: BASEMENT FLOOR LOOKOUT BASEMENT FLOOR DOWN BASEMENT FLOOR Lot Width =85' (TYPICAL SECTION NOT TO SCALE) (TYPICAL RAMBLER SECTION NOT TO SCALE) WALKOUT (TYPICAL SECTION NOT TO SCALE) Building 35% Max gCoverage = 25% in Shoreland Overlay SETBACKS FUTURE 25' 22' 28• 25' 50' 25' 22' 28' R SETBACK IE w SETBACK R w, SETBACK 65'Wide Single Family Lots 65' SINGLE ?j (MIN. FINISHED GRADE I ZI ( MIN. ) I (MIN.) j Front: FAMILY LOTS 3 • LO GRADING GRADE 3:: J GRADHNG GRADE j 3 o j Garage foundation to R -O -W =25 N 01 R �, ID W 0 House foundation to R -O -W =25 HO DOWN 10 ' 5' /A N 10' 6 6 10' 0.5' TOPSOIL 0 ° Side =5'-Garage 10'- Building AND I ° 0.5' TOPSOIL 0.5' TOPSOIL RE- SPREAD 0' o I Rear -25' SET BACKS o� RE- SPREAD \.? ° 0.5' TOPSOIL' 1 Mm Area: �10' RE SPREAD Lot Area =9,000 SF 2.5' HOLD 3.0' HOLD 2.00' HOLD DOWN Lot Width: Lot Width =65' BASEMENT FLOOR DOWN LOOKOUT BASEMENT FLOOR DOWN BASEMENT FLOOR Max Building Coverage =35% (TYPICAL SECTION NOT TO SCALE) RAMBLER TYPICAL SECTION NOT TO SCALE WALKOUT (TYPICAL SECTION NOT TO SCALE) 25% in Shoreland Overlay DETAILS (2) 109244- PRF,0R- DTLS.D WG • 0 • PIL EL E 0' 3D' 15.5' 10 Bock 15.5' I. Back eor Loune l0 1/1" Ewe Edge .I Culler S pQe 20S 1.5 1 S.OS Z S� Roe' 1' D.In1iM , see I %l Z]SO LvwEJ50Jp8 A I- ol ., see D IUI T Coot - 2357 Surmountable 2' -NNOOT 2350 Lif -SO308 Con<rela Curb 12 -Class 5 >ggregole Bose. IOU% crusx<U Crenulor B.1- It ..1. T) 1. l E 2, 111bi .gIbbe 7..Oiuired - 60'. 3. 9 .e 0.752. A�G m i .bM ..wa. 5. ; R I1 p zoe cum 6 aW . . ring au .t conaUUC wn t�loxng xemenl Ihe m wz base ro UOn Hil 7 oR ed svbg; " 1. c ad an bad t wma ae �e 1-it, to eou . B. a.ol„1 abet 6a paae . q m ad.a a s« pm< szsz IAr Cff10F TYPICAL RESIDENTIAL STREET SECTION ENGINEERING DEPARTMENT rt : 5200 SAMPLE EROSION CONTROL PLAN FOR INDIVIDUAL LOTS L Ra P«mu« eonl•d. ea. WGve• mulM u<b. mNCn b.•ma and /« all Imc. Elope. Leap« - •. � � .... of Ina �mt....d PI -Ail seed q • Srdes -Need check i1 slope is 4:1 a glealer. � EROSION CONTROL FOR FDEIIO�llltll INDIVIDUAL LOTS (TYP.) sn[a \sw26 ENGINEERING DEPARTMENT rt $3028 P PLAN CCEPTABIE TTN HM T /V KEEP LINER I A E 2 - -J' CLEAN "HE 10 u1l ASH E'C LINING w AEA F 6Y"exc V B.` C SECTION A -A "ores: I) LOCA TO OF TIE WASHOUT PEA SHALL BE Ai THE L IW OF ME CONTRACTOR BUT IT MU T BE 8E ONN ME PLANS AND SHA SHALL BE IT LEAST THE 1111UM DISTANCE FR FROM THE RIdT OF MAT AS REWIED BY LOCAL ,MRS T N. THIS ROUT AREA SHALL BE LOCATED IN SIO A THAT A NER 50 T E TRUCKS PASS THROUGH TIE WASxWT AREA PRIDE TO STABLM STABILIZED ROCK EXIT. 2) HARDENED AL SHALL BE UP AND ARE CLEANED AS NEEDED TO uT A FUUCi1ON1NO WKEN .SH UP < Wi AREA vW OR UUE OR as 33) THE D By THE SIN I E aNEER. ) THE WASH 7 AOUT AREA MUST BE GREATER THAN 50 FROM ANY TREES, A) THE WASHOUT AREA MUST BE SELF CONTAINED AND D FROM giER Tdl. �C�� OF CONCRETE p � 00011= WASHOUT AREA \wc\srccs\asw ENGINEERING DEPARTMENT rz �- 5304 PISNEERengineefing rnILENCDNEHFa IANDPL.ANNEts 1-inU SURYtYOP3 e 2422 Enterprise Drive (651) 681 -1914 Mendom Heights, MN 55120 Fox: 681 -9488 _.pianeereng.com 1 /2 -r 1" t3Me 1 /2'r T,R Bituminous WIL-I 8' IB' unDOi B6 CBro and WNa 1/2 lli/2•< Top Bituminous Material ope 3 4 per Nn00t 8612 eonaele am .na au.. 8 12• >p FOS< Ony . n arias,. Dri-y. • i q Lols. o• 2B - R 13'R 16' 1oD BitURrvnous Molerd 68'R - 1 Z8 I m Blum, B :tumi�uFOCme � TYPICAL CURB ClYY1m1Bf�1 AND GUTTER Jc1�[xa \mELZ \smd ENGINEERING DEPARTMENT TE rp 5203 EROSION CONTROL PLAN FOR INDIVIDUAL LOTS WITH SWALE DRAINAGE LOT 1 \ \ 2 \ LOT 3 DRAINAGE SWALE ((�L(0uF' HOUSE ERIMETER I Op P° 'W� ranc - ELRB GUITER STORM SEWER INLET SE DIMEN; CONTROL p.o a c y rning Per�'ll. <mxa Pa Am .muds con i.6- mulch socks, mvlcn limns one /or snl lance. EROSION CONTR01. TWSe $;Ib `II . D 4-6 NbWiX • CmsVUCllm nl. «^Dio 2' I dem 1n u ° R em�A se ..I PerNnela -straw mulct of r 2 in Y below roof line. If h- 1. n guttaa. domapouls Ame bi- a isi°o • E.Des-SIe <D <r -diva t. gr e1 the at.te to ve ade era need and e n enl a1 SwoeseNeed l blonkels 0 Y e Rind 2W'. E.01ea -Need cx ck do iif m q-ter. CM OF EROSION CONTROL FOR INDIVIDUAL LOT WITH me= SWALE DRAINAGE Fjjj \ErWl5R6\sao2D ENGINEERING DEPARTMENT XAIE x0' 1302D CRfOF TEMPORARY 4111 [ OUTLET (ROCK WEEPER) 1 c: \Exc \sPEC5U.b5 ENGINEERING DEPARTMENT T[ xo_ 5305 I h, ,by ceT1;E UXI ft, plm ,X, prepare m d by Nae K md<f my di- RlpeTVizLm and thbiI e , A duly LicmxO PTOfessimal FD&— (Eder the laws of the SXLC of Mimlcsaa 0.e'. No. I'M 1. 6 TICK CONCRETE SIDEWALK. 2. USE 8 THICK FOR COMMERICAL DRIVEWAY CROSSING. EX*N JOINT SPACING AT IOD 3 NT A WHEN DING EXISTING COIC EM OR STRUCTURE. NITI CONCRETE CBVIm SIDEWALK »....- ENGINEERING DEPARTMENT rz w.. 5214 EROSION CONTROL PLAN FOR MULTIFAMILY LOTS WITH SWALE DRAINAGE Loi \ \' 2 III DRAINAGE SWALE ONIU MIER -B « k GUTTER `STREET ENTRANCE WIMCD OR L'li. R INLET PROTECTION DETAIL 530IA a aedim<m < m it...o.p� v F lKg'A ry s n < eea Io pro :°. cmta.�mt r •nl.g W « Y Paimela cm o con I— mule 1A. s, m Iib barns and /m slt I-. TbRd Slle O m o a -6 Ri R pp_ • Cm Uuc en t 2' av .t o dmtN of 6 NcNes. a -slr.. -1. dl 2onc . e mI II P o n gutters, d need magY diov goekmectl 4opez sleeper Ih r wilh posilmi, 9rade 1 the crs o stole need IN blmkets an manmt seeding swdea -N «a bl m 2W'. Swoles -Need ch � w gr<a1er. CiffOF EROSION CONTROL PLAN FOR C MULTIFAMILY LOTS WITH SWALE DRAINAGE -•- � „.......e<.......... ENGINEERING DEPARTMENT R"Tt w.. 5302E uN v:h is q a " y4rt rrw< YIO TM F FENCE, uAdINE YCED -E- N DUrvE1} 36QTVEBDFD FABRIC T Fl�unx�GSPAGNO STPlES F- FABRIC ANCKORAGE A. SDL NCH BACKLILL ( /// iX TAMPED NATURAL 2. GLOW yy�� [[ AnCCEE 6' ON Si0E IN, D LENGTH dIIERIq BELOW m W SAT FENCE. PREA- AIRLEDOX) vA� SLOPE YOpE GR DE A% LENGM LE SSSIZAN 2% uI SW5OO FEEEEI swN¢ a ER THAN 20% 15 FEET Qi T A.m rw.. n• IDEA ON OF SILT FENCE FOR SEDIMENT CONTIOL R >8 E SILT FENCE NEP TOE W CONSI OF RUCT10N LWATW OF FERCE FOR PF R CiIfOF SILT ( FENCE ENGINEERING DEPARTMENT 5300 BOROLL WATTLE /ROCK WEIR TO BE REMOVED WHEN STABILIZED. 1 WATTLE B WL WEIR ROCK h FABRIC WEIR TRASH WArm BOTTOM a T IES a cfs 6' OR 12" BIORWL 6'-12' OF 1)S TO WRA PP E D SECURED INSIDE FES w DE A udDILAMEN NL TYPE GEOTE%TLE FABRIC INSI FES (mOF FLARED END SEDIMENT TRAP CO == ROCK WEIR /WATTLE ROLL xN1E I �xcV• LaNSw2N ENGINEERING DEPARTMENT RArz w 5302F CwDR/ P M6 1 - -2" CLEAN CRUSHED ROCK 7� 6' N NGEPTH FOR ROCK EPN FOR WOODCHIPS S NN DM UM CUT OFF BERM 10 WN4UM TO MINIMIZE RUND'F FROM SITE FILTER FABRIC T TO MFWfuiIR RI%K affOF ROCK ut1 E CONSTRUCTION awmm ENTRANCE ENGINEERING DEPARTMENT I rtxo 5301 WDODEN LAIN SHALL BE NAILED 2' x 4' HORIZONTAL MEMBERS SECURELY TO THE POST MEMBER TO SECURE FILTER FABRIC, WS AROUND TOP AND VOTTGN. FASTENED TO EACH POST LNG 2 -16D CWUW NAILS Z' x x Y LONG WOOD POSTS. B RED'D. Ma a PER GEOTEXTKE AS R INDOT TABLE =IC -t (uAdINE LACED). AOaTWAL B-10' OF """' FLAP AT BOTTOM OF BOX NOTES: CONTRACTOR SHALL CWSMUCT LLT INL ET AROUND STRUCTURE IN CLEARPCE TH E E TO EDGES OF STRUCTURE, TO BE C AN EVEN SURFACE SMUCrUEdEN NG. TOP OF SILT BOX ExIEND 18 MINIMUM ABOvE EXISTING �LpO- FABRIC FLAP U F 1 UNDERW O ASHN EVENiT \- i DEEP ED AIDE BOX i0 IT 6' MAIM SILT BOX 6' BELOW TO GRAD. cm OF CBSAm SILT BOX SEDIMENT TRAP \sJOZw ENGINEERING DEPARTMENT RATE Nei 5302G GRADING DETAILS NOTE: SPECIFICAT04$. SOURCE MAC ME SLICED WDvEN ""W""'ENT, ]6' WDI FASTENED TO STEEL T -1 ix 3 (50LB) TENSILE STRENGTH PLASTIC ZIP TIES PER SEDIMENT TRAP MANUFACTURED By WIMCO.LLC.SHAKOPEE. MN., ESS BROS.. CORCORAN. MN. OR EQUAL SP OfI�ATI0N5 nN0 ST�AaIOARnc DESIGN L04DS MODEL #CG23 OER£LTOR PLATE - CElDRa R XG 2- CURBS W Ow 0 RLTER ASSEUELv i- POST .(MACHINE YICED) - 24' RUNOFF 2 I 24" FILTERED WATER J SECTION A -A MYOF I OFFROAD CATCHBASIN CO FILTER BARRIER ENGINEERING DEPARTMENT rt xo. 5302 I ROCK WEEPER NDOT TYPE g MULC. 6-12' (1.4 WASNED ROCK) 21.5 S1 .cr FLOW F- Iv Gro"" E FABRIC ANCHORED I G U' x 6. 1ENd V. LE METAL siPLE DOwNSTREAu S TAPLES AT � INTERVALS �J 9D D' FABRIC AT 2' R.LS ( xOOT TYPE D IlLd I 8 WASHED RWK) II. BIG WEEPER PLE DOWNSTREAM 6 -12- LD OF FABRIC AT Z' INMWvALS vs -� DNECTd OF 1� SLNFACC FIL TYPE Iv GEOTEXTLL FABRI uxWT TwE 9 Mud INCH D IN 6 x 6 THING, (, )1- w TPE ROCK) STARES aUN filMETA AT 1 m. 6' 10 B' GALA. GROUND ' LONG N47E: POSTS pI ALONGSIDE 1' II ONGL NGSI GROU ]6 ND Ai 30 S ORE GRAD IN FEET % O.C. LONG CE ANG ANGLE DE THE MATT(£ 100) 100) SLOPE GRADI 4' <' O ALONG ENTIRE MAITRE IENGIH �N��I WEEPER DITCH CHECK/ 1.978��18Ig1 DITCH CHECK WITH WATTLE NMrt:cUxc\spEa\61oaI ENGINEERING DEPARTMENT P1'`lE xo- 5302H FIRE LENNAR 935 EAST WAYZATA BLVD. /AYZATA, MINNESOTA 55391 ECG -33 xId -FLOW HIGH -FLOW FABRIC Nolm 1, CLEAN FILTER MEDR, AFTER EACH FAUN EVENT AND REPLACE IF FILTER IS CLOGGED WIN SEDIMENT. 2. REMOVE DE O R IS S /SEGMENT FROM RECEPTACLE AFTER EACH RAN EVENT. Wl1OF CATCH BASIN SEDIMENT TRAP �, •� .r.�..Q�.•.u,. ENGINEERING DEPARTMENT w•E xo- 5302A r 2' TO J' "SHED ROCK I. PLAN VIEW Aq_ EE 1 I L = 2W 1 5' ulu. T 11. SECTION A -A NOtF. D =J MN, 5' u - (F,) I DIRECNON OF u 26' SUEACE FLOW DRAINAGE: DRAINAGE: AN. (Ac') PU x URA j j' S' MIN L GEOTEXTLE FABRIC L 12 MIN. RELERSE GRADIENT III. TRAP OUTLET "Dirt. < 2' i USE D FOR 2.S ACRES DRAINAGE PFA OR LESS. DEN Iyx vOLUME IS A FEET >cR ° :caEF 1 T CONTRIBUTING DRAINAGE W FA. cm OF TEMPORARY SEDIMENT TRAP mom 2.5 ACRES OR LESS ENGINEERING DEPARTMENT iE Ho 53021 DEr Sl1 110211- PRIFGR- DTLS.DWG LAKEVIEW I 9 13 CHANHASSEN, MINNESOTA 0 • LEGEND IS CATCH BASIN INLET PROTECTION TO BE INSTALLED AFTER 1ST LIFT OF BITUMINOUS. CATCH BASIN INLET PROTECTION TO BE INSTALLED WITH CATCH BASIN GRATE. ............•• PERIMETER EROSION CONTROL FENCE. INSATLL BEFORE START OF GRADING eeee8e888- HEAVY DUTY EROSION CONTROL FENCE. INSATLL BEFORE START OF GRADING eeeeeeee SECONDARY EROSION CONTROL FENCE. TO BE INSTALLED 48 HOURS AFTER COMPLETION OF GRADING. �8aae� SECONDARY EROSION CONTROL FENCE. TO BE INSTALLED AFTER COMPLETION OF SIDEWALK CONSTRUCTION. MNDOT CAT 3 EROSION CONTROL BLANKET. INSTALL WITHIN 7 DAYS OF GRADING COMPLETION OR BEFORE 1ST RAINFALL EVENT WHICHEVER IS FIRST :..........................., MNDOT CAT 4 EROSION CONTROL BLANKET. +- - -- INSTALL WITHIN 7 DAYS OF GRADING COMPLETION OR BEFORE 1ST RAINFALL EVENT WHICHEVER IS FIRST ROCK CONSTRUCTION ENTRANCE INSATLL BEFORE START OF GRADING STRAW BIO ROLLS INSTALL WITHIN 7 DAYS OF GRADING COMPLETION OR BEFORE 1ST RAINFALL EVENT WHICHEVER IS FIRST �► ROCK BERM INSTALL WITHIN 7 DAYS OF GRADING COMPLETION OR BEFORE 1ST RAINFALL EVENT WHICHEVER IS FIRST ® TEMPORARY SEDIMENTATION BASIN PIITNEERengineering 2422 Enterprise Dri ve (651) 681 -1914 Mendota Heights, MN 55120 Fax: 681 -9488 w.pioneereu—m /// i{ �y t? I i l x ,}1 A ! ", K � A 7 ' !. 110211 - PRE- EC.D \VC E • • • PIT& . rABMt :Ia o °�A ef neh : ;: of OW ;E o L - MACHIxr e" 12 De— g SILT FENCE. HEAVY OUtt LI�>a SILT FENCE. MACHINE SLICED 36 EKTUE FABRIC 5 T F 6'T� - MA %. SPACING STAPLES /- FABRIC ANCHORAGE TRENCH. BACKFILL .TN TAMPED NATURAL SOIL FLOW SILT FENCE TO B E P GRADE 6' n Is CONTOU. SELOPE Iry AND LENGTH CRITERIA BELOW mW SILT FENCE. PREASSEMBLED(IX2) VpV SLOPE $LOPE GRADE MAX LENGTH ZESS5 N 2% 10575-5o FEET -2 02 THAN 20R 15 FEET CNCL PERM s SPECS. -- ]p0 IKE Togo ac A.ca nm, ee no" LOCATION OF SILT FENCE FOR SEDIMENT CONTROL V � 6 OE9R BLE GPE SL EE NEAR TOE OF l SLOPE OUTSIDE OUTSIDE OF CONSTRUCTION LIMITS LOCATION OF SILT FENCE 11ppp FOR pEREMITER CONTROL 4111 OP SILT CHIME FENCE RDASEO: I C ,\ ENC\ �\ ENGINEERING DEPARTMENT HLAL No.. 5300 �A�II-21 CLEAN CRUSHED ROCK 50. S M, 6 "MIN.DEPTH FOR ROCK 10 "MIN.OEPTH FOR WOODCHIPS NNO� M U M N O M 18" MINIMUM LUT OFF BERM 2 TO MINIMIZE RUNOFF FROM SITE FILTER FABRIC NOTE: TO STOP MUD SHALL BE T HROUGH ROCK ROCK CITYOF ROCK 41J1 [� CONSTRUCTION ENTRANCE A '.c' \Exc \vCCS \6w, ENGINEERING DEPARTMENT PurE HO.. 5301 PLAN PROFILE —�36 "[- 111 w a 1 1I III 12" m ' I I 1 12" I DOD Illill m w _ DIRECTION HE OF FLOW I > w m- 0 N III o WOODCHIPS, SOD, 1�1 OR STRAW MULCH 11 111 1 I I —I 111 BERM - COMPOST, EARTHEN (STABILIZED WITH STRAW 111111 MULCH OR WOODCHIPS), OR WOODCHIPS --�{ I-- 24'1 SAMPLE EROSION CONTROL PLAN FOR INDIVIDUAL LOTS . a o' •:. . LOT I ixo K LOT 2 rtx LOT 3 _M�. nI III MIPHx�r�,»IA.,emxwn 2 ,ww auto \ \ I I aca u w+ e -w u, rwa o-n <FOIMFNT fONTRO zany al —.1-9 P edges` x m r n o P,av,de cmtoinmm y e y eu ning Perimeter r cenlydz can Include mulch socks, mWCn perms and /w and fence. FRI�SION CONTROL • dI -Ste no .mum of 6 h .n a -6 i I cope`. C m -1 to 2'd us a oI 6 Im r - $lmw mulcn11 2Inc1lez ro ouna—A, d'vec em. r House tnb. If ha n g.H_ oownpouts need energy dizsipatnn. fly Slbe s-Pel to wI I , e worm of lne slot< nee0 nml seeding. S. I -Need l blanets over find IOO: • $.d check doms it slope is 4:1 ar gleota. QTIOP EROSION CONTROL FOR INDIVIDUAL LOTS (TYP.) REV.6ED: 2-10 o_ ENGINEERING DEPARTMENT TE N D c \Exc\sPECSwoza 53028 PLAN PROFILE � o III m a > 1111 12" o LIM IIIII — 4 -6~ m m w -1I I= 3" w DIRECTION III ¢ a OF Fes & < w Im I> > IIIII J o WOODCHIPS, SOD, II 3 > OR STRAW MULCH IIIII w � III BERM - COMPOST, EARTHEN (STABILIZED WITH STRAW I�1 MULCH OR WOODCHIPS), OR WOODCHIPS PLAN PROFILE 0 m PLAN PROFILE SILT FENCE SILT FENCE--. ¢ W 0 O o CO w SILT FENCE SILT FENCE--, a 24" m 3" m w 3 W O ¢ W L) N = = O O 0 " m DIRECTION 24 m w a OF F�_ w [--4_6" 3" � o DIRECTION J m U to o � WOODCHIPS, SOD, OF FLOW < a OR STRAW MULCH > in a a WOODCHIPS, SOD, 3 > OR STRAW MULCH W � �{ I�24" BACK OF CURB PERIMETER CONTROL BACK OF CURB PERIMETER CONTROL NO SIDEWALK WITH SIDEWALK PISNEERengineering 2422 Enterprise Drive (651)681 -1914 Mendota Heights, MN 55120 F.: 681 -9488 — p,-.g- EROSION CONTROL PLAN FOR INDIVIDUAL LOTS WITH SWALE DRAINAGE LOT 1 \ \ 2 LOT 3 \ DRAINAGE SWALE LEGEND RR (I HOUSE c#• ! + P�RIMETER I •"-• r1� CURB & CUTTER tp , STREET ENTRANCE N ORM SEMER INLET CO OR SMILAR INLET PROTECT0H OCTAIL Sb2A SEDIMENT CONTROL Perimeter sediment controls are neceasory of d— II.pin9 property and street edges. Note that sediment cool ols need to provide containment by Iu mq perimeter controls upst.pe_t, Perimeter controls can Include —1- sock, mulch berms and /o, silt fence. EROSION CONTROL • TOpsoit -Site has o minimum of 4 -6 inches of topsoil. • Consl,ucti- entrance -I to 2" P— crushed rock of . depth of 6 inches House Roof Perimeter -Sl,ax n nn m l ch .t 2 i nches deep .round house directly below o.I li . if h gulle Szspolion. • Slopes- Sleeper than 4< h m I wslh . downspouts positive grode to the bole's of the stole nee0 fiber bl —Itts a d —porory a pm 0-1 seeding. • Swale -Need blanket, o no I e li) 200'. • Swoles -Need check d—, s if slope is a, 9-1., �C�IyT�Y�O� P� EROSION CONTROL FOR UD9B�lld1 INDIVIDUAL LOT WITH SWALE DRAINAGE ENGINEERING DEPARTMENT I P ' A ' r ND"; 5302D ?c�\Exc\�tcs\ssozD y JUG'\ Aae oar mMrduxs (d .a,IS,..\ sxeM s'ns -,asm� d yxd -ap°4a f r .,mm vro.e,,,. STRAW CATCHBASIN INSERT L ROCK WEEPER MNDOT TYPE 9 MULCH 6 -12 (IY, WASHED ROCK) a z - 21.5 DIRECTION OF _ SURFACE FLOW w ` TYPE IV DE FABRIC DIRECTION OF ANCHORED IN Iry fi It % 6' TRENCH WiH 6 ". 11 GAUGE METAL STAPLCS Ai 4 INTERVALS STAPLE DOWNSTREAM So, OF FABRIC AT 2' N INTERVALS ..Do, TTPE 9 MULCH (1 h' WASHED ROCK) II. BIO WEEPER STAPLE DOWNSTREAM 6_12• SIDE VA FABRIC AT 2' a z - u r 1 INTERVALS _ L 5 DIRECTION OF 1� SURFACE F Ow N TYPE Iv GEOTE %nLE FABRI 3 ANCHORED IN 6" X 6" TRECH N TH 6 ", 11 GAUGE METAL �CI HOOT TYPE (1 1f" WASHED 9 MULCH ROCK) STAPLES AT a' ' NTERVALS N OTF. SPACING= (HEIGHT IN FEET % 100) SLOPE GRADIENT " Po515 DEGREE a' DRIVEN ANGLE O.C. ALONG TH 36' LOVc 24" INTO ROUND AT 30 ALONGSIDE THE WATTLE ENTIRE —TLE LENGTH C DITCH WEEPER TCH CHECK DITCH CHECK WITH WATTLE ENGINEERING Nwt: ¢ \Exc \SPECS \53o2x O O DEPARTMENT Py.1F xp.. 5302H FIBER BLANKETS (COMPRISED OF VARIOUS MATERIALS) MUST BE PLACED PER MNDOT SPEC. 25)5 h 3885. TOP SLOPE -U- TOE SLOPE — GROUND PLAN [TRENCH. STAPLE. BACKFILL, COMPACT MP. CHECK SLOT, SEE NOTE 5) I ' TOP SLOPE , { I I' FIBER BLANKETS WITH MIN. 7' OVERLAP 6" 6" �E%. GROUND n.. OE SLOPE SECTION NOTES: 1) Loy blanket p 11el to the direction of the wore, flaw. 2) Adjacent strip edges sholl overtop at least 4 inches. 3) Slrip ends stroll overloP vl least 7 inches. 4) All overlaps shall be mode with the upgrade stbip ploced over INe dow ',— strip and slopled securely per manulaclurers r<commentlalion. 5) Bury n upgrade end of top blanket strip of 1-1 6 ;oche o -dicol check slot, staple, backfill a d then c oct with'—A, lire s oraguivolent. ON SLOPES GREATER THAN 100 R. LONG -on atltlilional check slot shop be dug —.- Ue sops 1/3 01 the distonce Imm the bottom. 6) Blaokel type /moteriol dependent upon soI type. grade and —;6n red I— v e, per City Engineer 'Po'-1. 7) Addd;onol contro a Damn /setl enlalion l devices Toy M r,qui,,d of the discretion If the City 'Engineer, im FIBER BLANKETS SLOPE STABILIZATION Galvanized J bolt w/ wing nut z1.Xw Dla. 1 I.o90 BI to - 223 1 HICK ° Silt Fabric Sleeve per MnDOT Special ml provision 3886 25.3 D 23.681 DA. 26.X0,5 DIA. ��J TAB O.D. 27" INFRASAFE SEDIMENT CONTROL BARRIER -DG (F USE W ITH DITCH G RAT E INLET CASTINGS) STANDARD DETAIL 110211- PRE- EC.DWO E - a z - _ N 3 �CI �o O O O O O - O O O _ N D Lj, It 0 a Szln II CITYOF TEMPORARY � syREv OUTLET ��BIIONYViII (ROCK WEEPER) '. c Uxc \sacs\sws ENGINEERING DEPARTMENT PuTE xo.: 5305 z1.Xw Dla. 1 I.o90 BI to - 223 1 HICK ° Silt Fabric Sleeve per MnDOT Special ml provision 3886 25.3 D 23.681 DA. 26.X0,5 DIA. ��J TAB O.D. 27" INFRASAFE SEDIMENT CONTROL BARRIER -DG (F USE W ITH DITCH G RAT E INLET CASTINGS) STANDARD DETAIL 110211- PRE- EC.DWO • u NORTH BAY �- _ s - ' RIM: 892.44 : y 3 11 RIM: 899.18 MHMH =4 / �a s m � PI8N ing 2422 Enterprise Drive ` (651) 681 -1914 Mendota Heights, MIN 55120 Fax: 681 -9488 www.pian ereng.com 12 ® 2.81 % 11 INV: 8850 INV: 887 - " - .65 -/ INV: 884.90 ,0 MH 21 9 RIM: 898.71 INV: 887.71 IN V: 885.0 H RANT ®3,87 IN V: 884.9 PVC C 00 WM 37 \ 36 7T D / 6 y \\ _ OUTLO '\ B 29 \ HYDRANT 30 - - -_- 3t I MH- 4 32 33 1 I RIM: 915.03 MH -23 34 1 I 35 IN V: 904.03 RIM: 912.18 :NV:904.13 INV: 901.28 RIM:907.93 INV: 901.18 IN 897.03 IN 896.93 2.749 g" ® 3. 8" 726C97 WM 25 12 73 _ s } 8 " ® 2.547 RIM: 899.18 MHMH =4 / T 2 INV:875.52 RIM: 906.54 4 INV:875.42 INV: 895.54 Ck 1 MH -1 OUTLOT A ` " i 40 � MH- 7 - 7 O 4 5(- 6 8 5 7 RIM:89132' 1 c 5 INV: 882.42 RIM: 886.74 MH 19 INV:882.32 INV: 877.74 INV: 877.84 ' RIM: 893.64 \ INV:882.76 39 \ INV:882.66 MH -2 RIM: 906.99 \ � MH -6 INV-874A9 INV:874.09 8 \ I l ,\ ®\ p 0 y 38 \ ®o\ 5 RIM: 89 I RIM: 898.31 O I WETLAND 28 \ INV: 8811.55 3 4 1 I INV: 881.63 \ 77% MH -25 ® RIM: 916.05 )RANT INV: 880.95 3 INV: 905.06 ° IN V: 880.85 11 � �'� ��•�, HYDRANT . O tJ v �a s m � PI8N ing 2422 Enterprise Drive ` (651) 681 -1914 Mendota Heights, MIN 55120 Fax: 681 -9488 www.pian ereng.com 12 ® 2.81 % 11 INV: 8850 INV: 887 - " - .65 -/ INV: 884.90 ,0 MH 21 9 RIM: 898.71 INV: 887.71 IN V: 885.0 H RANT ®3,87 IN V: 884.9 PVC C 00 WM 37 \ 36 7T D / 6 y \\ _ OUTLO '\ B 29 \ HYDRANT 30 - - -_- 3t I MH- 4 32 33 1 I RIM: 915.03 MH -23 34 1 I 35 IN V: 904.03 RIM: 912.18 :NV:904.13 INV: 901.28 RIM:907.93 INV: 901.18 IN 897.03 IN 896.93 2.749 g" ® 3. 8" 726C97 WM 25 12 73 24 O 23 22 21 20 1 2 3 ` 14 15 16 17 18 19 ®0 ®0,40% 0 13 . O \" �$ 12 VC r 0 WM " ® 0.402. 8" ® 0.40% MH -1 _ s \8" ® 0.40% MH RIM: 899.18 MHMH =4 / T 2 INV:875.52 RIM: 906.54 'L INV:875.42 INV: 895.54 Ck ' MH -1 OUTLOT A ` RIM: 890.45 - 7 O 4 5(- 6 8 5 7 1 c 5 \ RIM: 886.74 MH 19 INV: 877.74 INV: 877.84 ' RIM: 893.64 \ INV:882.76 6 INV:882.66 MH -2 RIM: 906.99 \ � MH -6 INV-874A9 INV:874.09 8 MH -1 ,\ ®\ p 0 y RIM: 896.56 INV: 882.20 INV: 882.10 \ ®o\ 5 RIM: 89 I RIM: 898.31 O I WETLAND INV: 88. \ INV: 8811.55 3 4 1 I INV: 881.63 \ 77% II ® RIM: 897.62 )RANT INV: 880.95 3 ° IN V: 880.85 24 O 23 22 21 20 1 2 3 ` 14 15 16 17 18 19 ®0 ®0,40% 0 13 . O \" �$ 12 VC r 0 WM " ® 0.402. 8" ® 0.40% MH -1 INV: 879.49 INV:878.91 is RANT « - - - -- YOR NT INV: 879.39 INV: 878.81 �. ';' O 5 1 HYDRA T 8" ® 2.90% 2" PVC 900 WM MH -13 11 MH -1 MHMH14 RIM: 907.18 MHMH7 1 RIM:907.45 RIM: 910.27 INV:893.96 8" ®0.407 RIM: 894.38 1 INV: 896.38 INV: 895.20 INV:879.79 2 INV: 883.48 11 10 INV: 9895.10 8 7 6 INV5879.89 4 3 INV: 883.38 4 1 11 HYDRA 3 I _ 8"0 160% $" �,� PVC C900 WM / . OUTLOT C - - 2 / MH -8 RIM: 897.76 / INV: 886.76 C INV: 886.86 8" ® 3.19% INV: NOTE: SEE SHEET 13 FOR STORM SEWER DESIGN. �Q 0 50 100 200 GRAPHIC SCALE IN FEET 110:.11 PRE SAN.DWG INV: 880.48 INV: 876.58 INV: 876.68 / -8" ® 0.40% f MH-5 O RIM:893.62 ®/ INV: 876.10 INV: 876.00 V 8" ® 4.41% HYDRANT 3 _ s \8" ® 0.40% MH RIM: 899.18 MHMH =4 / T 2 INV:875.52 RIM: 906.54 'L INV:875.42 INV: 895.54 Ck ' MH -1 OUTLOT A ` RIM: 890.45 - 7 O 4 5(- 6 8 INV: 867.67 1 c MH-g I RIM: 886.74 INV: 877.74 INV: 877.84 ' OUTLOT B MH -2 RIM: 906.99 � MH -6 INV-874A9 INV:874.09 INV: 879.49 INV:878.91 is RANT « - - - -- YOR NT INV: 879.39 INV: 878.81 �. ';' O 5 1 HYDRA T 8" ® 2.90% 2" PVC 900 WM MH -13 11 MH -1 MHMH14 RIM: 907.18 MHMH7 1 RIM:907.45 RIM: 910.27 INV:893.96 8" ®0.407 RIM: 894.38 1 INV: 896.38 INV: 895.20 INV:879.79 2 INV: 883.48 11 10 INV: 9895.10 8 7 6 INV5879.89 4 3 INV: 883.38 4 1 11 HYDRA 3 I _ 8"0 160% $" �,� PVC C900 WM / . OUTLOT C - - 2 / MH -8 RIM: 897.76 / INV: 886.76 C INV: 886.86 8" ® 3.19% INV: NOTE: SEE SHEET 13 FOR STORM SEWER DESIGN. �Q 0 50 100 200 GRAPHIC SCALE IN FEET 110:.11 PRE SAN.DWG INV: 880.48 INV: 876.58 INV: 876.68 / -8" ® 0.40% f MH-5 O RIM:893.62 ®/ INV: 876.10 INV: 876.00 V 8" ® 4.41% HYDRANT 3 _ s \8" ® 0.40% MH RIM: 899.18 MHMH =4 / T 2 INV:875.52 RIM: 906.54 'L INV:875.42 INV: 895.54 Ck IN 888.28 i - _ l � - 7 O 4 5(- 6 8 BOULEVARD SPRINGFIELD h ... 7 • 1� �i G- ,, �� LAKE RILEY DNR 10 -2P CBMH 402 ` O' EX 15 0 1 87% i., \ OHW 865.3 \ -�\ WETLAND MANAGEMENT CLASS RIM: 8 . s "IMPRO VE' x INV. 887 7. 38 ' y I = \ 8 122 RIM: \ _ RIM: 891.68 4 15" 0 0.647. ¢' - -" RIM: 892.37 1 CBMH - 401 72 - - •,, "++„�: - - --- ' INV: 888.68 41 1 7 RIM: 892.60 ~� 1 0.50 INV: 887.24 11 \ - ......' ``\`• 12 01.50% 1 E \\ ! . ' CBMH -403 \ \ R 891.97 15" ®0.509• 10 ` IM: \\ �t 'a -t" INV: 887.95 40 \ \s k12" ®0.509 `\ MH- MH -4 4 \ \ 12" ® 2.50% RIM: 897.59 RIM:892.39 \ \ IN V: 883.94 8 888.65 1 39 12" 0 0.50% 7 CB -405 \�\` ° � CBMH -207 •, RIM: 894.50 \ �, ° RIM:893.31 \ '' :� INV: 890.84 38 \ 7 CS -3 '� INV:882.43 \\� RIM: 888.00 �t• 6 \ \� IN V: 884.33/ 4` X36 " •°�, OUTLOT D `\' 18" 0 0.50% �\ INV RIM: 865.81 F : 862.14 G y 28 29 \ \ _ - X 28 FES -200 888.00 ' MH -206 '� RIM: 896. 30 I - INV: 88178 INV: 851.93 24" ®0.507• RIM: . . WATE QUALI Y 31 I I I I e 5 WETLAND ';ty INV: 889.7 ASIN 3 0 MH- 1 I ' -\ DNR 10 -213W 32 7J i RIM: 892.20 1 35 " 0.50% MANAGE 2' INV: 888.08 34 18 ® 4 \^ 24' 0 0.50% 20' BUFFE a R 'f I CBMH -303 1 11 30' S.B. TO BUFFER - CBMH -302 M I RN V: 894.86 \� RI 89801 I \ M�S22 111 RIM: 903.23 `S, 1 I �, INV: 893.19 ,a INV: 887.77 RIM: 883.27 \ 33 °4 I 4 I I \\ INV: 866.06 OUTLOT A 'A 78" ®0.50% I1 \ `� 30" 0 0.50% 12" ® CBMH -204 INV: 865.75 12" 0 3.3 • 0.50% RIM: 896.79 FES -220 CB -304 INV: 880.68 / CB -305 3 I INV: 865.00 RI 04 RIM: 899.17 M: 9.70 - CB -212 CBMH -211 INV. 2.00% 895.00 18' ®0. 1 1 ` \ 30" 0 0.50% ' O S RIM: 900.75 NV:901.03 20 _ - _ - - 12" - - \ MH- 7 INV: 897.0 INV: 896.41 26 RIM: 900.60 0 - \ N 21 8 C 1 1 _ RI 86.28 7 !s I� I III _ •� 0 T729y WATER QUAL BASIN 200 \ `INV: 865.16 27 25 24 22 RI M:896.79 2 / 1J ___. t; 23 119 :892.62 RIM: 897 07 MH - - 21" 0 13.83% `I ,t - - _ O RIM: 895. _4-2 =0 ,59� }2 - - 50�� \\ INV: 880.03 /INV: 887.69 M 2 CBMH -229 _ - ' - - \ RIM: 889.03 / 4 _ _ 72" 0 6.81% RIM: B86.36 ' OUTLOT B 12 13 - -Tr' 1 INV: 877.54 `„INV: 881.79 t\ J 15 1 16 17 18 CBMH -224 14 CBMH -210 CBMH -209 1 9 \\ RIM: 898.52 " 0 12" 0 0.50% IN V: 890.74 �> `= 18" 0 2.00% RIM: 897.98 RIM:897.31 3 12" 0 2.00% \ \��, �_ MH -20 INV: 89413 INV .: 34 893. MH-2 0 - 1, C8MH -104 CBMH -226 ` RIM: 906.90 RIM: 908 INV: 883.67 .39 21" 0 7.00% / 3 -C\ RIM: 908.43 y CB -238 INV: 902.66 INV: 903.73 �s INV: 90426 12" 0 1.00% RIM: 886.36' >` 18" 0 0.82% 12" 0 1.00% INV: 882.69�`.t \ a 4 MH -103 > ��; RIM:908.93-- +-- �'_',- _ CB -228 / \\ CBMH -231 / RIM: 898.93 ' S RIM - 890.90 72" 0 \00% INV: 894.73 r' \\ INV: 885.03 / INV: 902.50 p% I s 7 0- 12' 0 1.00% MH -225 ' 1 CBMH 105 :9 08.72 227 RIM: 906.48 1 - RIM: 9 CBMH -236 \ 15" 0 0.50% i' RIM: 908.43 INV: 904.04 INV: 901.81 RIM: 892.22 CBMH -232 - - ` IN 903.97 2 INV: 887.32 RIM: 892.99 ;•. .-t 2 01 1 INV: 885.9 / i 1 .00% 3 4 0 1.00% \\ 9 4 8 7 a 5 0 0 c ...................:y'•. �' r 2 . 0 10 CB -237 \ 15" 18 0 0.50% RIM: 892.18 INV: 887.61 � > • i MH 102 TER QUALITY A - - --- - -- _- ' _ _ 3 \, _ _• -� - E i RIM: 908.06 / 100,' O Adr p � . -' INV: 890.35 CBMH -233 cb� +. 1 OUTLOT C -- - - 2 �j RIM: 892.99 ' 50% 2 - _________- INV: 886.05 CB -235 `t II 12" 0 0. 2 t INV: 890.00 RIM: 891.57 INV: 887.90 CBMH -234 T2 • IN RIM: 891.78 1 7 - 8 q , RIM:890.00 L INV: 887.09 q 5 6 7 V: 884.97 INV: 884.59 • o , � F. EX 'J WATER QUALITY WATER QUALITY WATER QUALITY BASIN 100 BASIN 200 BASIN 300 NWL =890 00 NWL =866 00 NWL =888 00 i ' RILEY BOULEVARD SPRINGFIELD 0 50 100 200 GRAPHIC SCALE IN FEET 110211- PR&STM.DWG H WL= 891.98 H WL= 869.27 H WL= 890.45 BOTTOM = 882.00 BOTTOM= 856.00 BOTTOM= 880.00 NOTE: WET VOL.= 0.425ACFT WET VOL.= 1.828ACFT WET VOL.= 0.665ACFT SEE SHEET 12 FOR SANITARY STORAGE VOL.= 0.371ACFT STORAGE VOL.= 1.917ACFT STORAGE VOL.= 0.694ACFT SEWER AND WATERMAIN DESIGN. AREA OF DRAINAGE= 3.008AC AREA OF DRAINAGE= 18.658AC AREA OF DRAINAGE= 4.904AC PISN E ER engi n eeri n g roa�,�Y9R AREA NWL= 0.161AC AREA NWL= 0.494AC AREA NWL= 0.249AC 2422 Enterprise Drive (651) 681 -19]4 n e, <m mal a Ptep ed Name Rev 61"" Dv< 10 -15-10 LENNAR F 681 -9488 Mendota Heights, MN 55120 < or m,der my sax,;s;sa ana aw ama My],- ional Fnpneer sedp'of. Dea;Fnw xee PRELIMINARY STORM SEWER 935 EAST WAYZATA BLVD. o u: www.p neereng.eom n >n10 Vimreer Fnenrernnn waer melaws .,.e o[Mirinesota Reg. No. Daze Da Al WAYZATA, MINNESOTA 55391 CHAI i ' RILEY BOULEVARD SPRINGFIELD 0 50 100 200 GRAPHIC SCALE IN FEET 110211- PR&STM.DWG • • 110211 TRW Canopy to be removed: 3.6 acres x 1.2 =4.3 acres Net Canopy Area after grading: 2.7 acres Base Line Canopy Coverage after grading: 7.6% Minimum Canopy Coverage Requirement: 25% of net project area of 35.7 = 8.9 acres Remaining existing Canopy of 2.7 acres Required additional Canopy Coverage: 6.2 acres Each additional tree = 1,089 sf Additional trees required to meet Canopy Coverage Requirement: 248 See Landscape plan for proposed tree locations and plant schedule 0 50 100 200 GRAPHIC SCALE IN FEET PI$NEERMi � 2 wcwmss .D vt.sxxms suro <um'exosu (6$1)661 -1914 Ih— by—dfy Nazshisplaewaspseparcdby Nam Revusons Mmota H Drive Fox: 681 -9488 d asoperv;slm=dt l ` ��., M dots Heights, MN 55120 wm —.,my ucensed rkoresrow �y;oca O www.pioneereng. snider Ne laws of she Sure of Mivnesou Reg. No. 442 03 Dasc u • - is '•__. `\ ^.;'\ ...T'' ;'I _ "- � -- '7021 , / ; 77 , N r : :, '• 'rte ".`,.�. „...� Y:l� T -= 3 '_ a_. �. "._.. :..._.;y�.V._•- . -- rr/ 73 i? t . \' :� \\ \ ,•\ =.y /�\. \ \ r t'4 ter' /,f> F ?" f'.�� » _._._._m:2 t` 1 ° 7027 1 t\ tt I e 7895 \ \ \'`, 7.592 `,� \ \ ` \ Y - i \,.,� t' ..� i ' i�j t t t t y . y } r f : i� �' 7026 \`, \ \ \` - ` \ - °?ti 1 __ ? s /1 1 '� "' 7391 W I \E , 0 N C NTF� 7 AN \� 'T- 0GT1bN \ �"i>E • f\TCE _ y \ _ \ `\ \ q: _. - __.__ -.•- te r. i : r t� I t , � , i £ 3 �3 >• 138\ \ `?' i / i - j f y 1 700 j' / • f 1 ` � � ' s `'�_... _ _ v. �,i -_{�% � ('t jq t x t [ 70 ��.'�`•tiL \ " , , \\ c trtt �✓ i �Q 3 4:. ( j ° \ •.. 9 - ,� j ; n ✓ .. 5 ` � az 7077 t 73 707 _` 73 fr �r j 41 _87 - 07 f � j " 7D 0 0 ?• 737'7 \ ``-- ti �\ 1 t (} / �i 1 `' ='- 7 Q 76\ 15, 74•g 1 . ,`7045 }7378 ri:,`�r.,, j< �`\ ! ,� � \ti •^�, \ ` \~\��- ,� ,�' '•,� 2 �/ ,✓ ,.� f/, WE TL P D 76 4 13 � ; `\! \ 71 4 c 042 I r 7064 - :705 ,3 "f' t i t y Y4 4 7� J(' ~� 'F" ROSION CONTROL FENCE /J / �\ 196 'ar' - '$` - 70 5 \ l �. '�`- %'�°�i315 EE PROTECTION FENCE f�3 s .', 01- ry 7311 v% f' s7 h;1 LL I 7095 - �3C7 705870 7054 Z�}9 - 3 101. 7367 �e 1_' 7200 - ``717/7 - 74 3 "7308 l I' %; M ,, ` , ;', 7h 67 OX 7302 -7 73 7306 f / _ 7'366 ' 720 :7174 \\ - 300 1 10 720 1 299 1 TREE PROTECTION FENCE DETAIL NOT TO SCALE HEAVY DUTY SILT FENCE USED MNDOT 3886 AS TREE PROTECTION FENCE 1 TREE PRESERVATION NOTES BEFORE LAND CLEARING BEGINS CONTRACTOR SHOULD MEET WITH THE CONSULTANT ON SITE TO REVIEW AL PROCEDURES, l W 0 RK ACCESS ROUTES. STORAGE AREAS, AND TREE PROTECTION MEASURES NO FILL SHOULD BE PLACED AGAINST THE TRUNK, ON THE ROOT CROWN, OR WITHIN THE DRIP LINE AREA OF ANY TREES THAT ARE TO BE SAVED. NO GRADING, TRENCHING OR PLACEMENT OF EQUIPMENT IS ALLOWED IN THE TREE PROTECTION AREA. WORK PERFORMED WITHIN THE TREE PROTECTION AREA SHOULD BE DONE BY HAND AND UNDER THE SUPERVISION OF THE CONSULTING ARBORIST. PRUNING OF OAK TREES MUST NOT TAKE PLACE FROM APRIL 15 TO JULY 15 TO PREVENT THE SPREAD OF OAK WLT DISEASE IF WOUNDING OF OAK TREES OCCUR ANYTIME BETWEEN APRIL TO AUGUST, A NON -TOXIC WOUND DRESSING MUST BE APPLIED IMMEDIATELY, (EXCAVATORS MUST HAVE A NON -TOXIC TREE WOUND DRESSING WITH THEM ON DEVELOPMENT SITES). �06 1 ER ALS ..... a O 7365 .,, r � , b ; ; 17 .7208 '.� 7119 f 7 \ f / }. 7,3 7116 298 7 I f• /I i i ... °•�' / t t , _ \ %•7297 eNb ,..,. 7117 1 0 7296 71221 7914 ,7 ;i'..• r .- 1 /',\ \ �_77A0._ 7252 " _. - , 4< < ".. '> f t \ i 47287 — ei z 7 I ;, '' I iJ '' �� it 4 =728& ,;r,..._._... 7z76,.. _ TREES IN FUTURE PARK / : � _ I ��9a 72 �z�r1� 1 'a \ \ AND WETLAND AREA 7z 8 ' - BUT NOT INVENTOR SEE SHEET T4 FOR TREE INVENTORY LIST ,t s -- 7.356 73 $81. {i : ' / �. �. \ _ T :4 \ \ - -_ —f, f i =• f— ..L... _ _ ; �.....' �..,, '' i 2,1 �s1a v _ 2sssi zP i E 7 ' T I / z �/ zlas 1z4 71 //0 \ 7 a2�21 a 2SS _72 � r a8�� 735 7. 7`," 7 } � ` II `\ 7169!.. 722 yy 22 73y� G t ; -, \ !\ ,1 741 245 I °I 4 7352 I f.; \ \\ \\! 3' \� \ \ _ 92847z$3 \ \ }$25 \� \ti�247 133 =fil Ir �.: �i .t \ \ \ 7166 - _ !• 7159, \ \ \ \ \• ,67 :_77 7 6 `.� TREES \ = =,- �;, ; \ 7222 �z�3 IN P9c SANITARY PIPE TO BE REMOVED tt \\\,,, 7 O �. \ .;!, "�- ` 5 .' - t E. \\ 7165 I t,71 44 /e \ I X Ir } y I { r _ 7 i - 7256\ \ ` , 225 7f5 734 FJ34 r / \ \ 7 i 7,160 727`, -¢ \R 4S li •734 p .� S' \ K - 7 t� 7149, \ \ �\ 3$0 T, \ J, n : d3 BAR 1 7 6 i 2 71 #87T45 `7 _ 241 '� .,\ \ ' I� �j 14, 72zF0 i...... 7239 7 \ 71`51 723p { 72 F i i �' � , \1 f' \ i' - r. z � �� ~�� 227 725r \a` _ I 715E _ y r 0 25 50 100 _ e PISNEER eng i ne erzng GRAPHIC SCALE IN FEET rnv. FR;UTxtsys LAND SRS —U., _" 110211 MO2 I heFeL, y a I�aLL,li1 waspreyared Rev�s;ous LENNAR LAKEVIEW 6. 2422 Enterprise Drive (651) 68] - 1914 Nama Dale 1D - 15 - m TP a d,dy r my dire, I.m.A ioa and 0La I Fax orn 63 L. TbOmOSOn TREE PRESERVATION PLAN 935 WAYZATA BOULEVARD EAST T2 OF 4 Mendota Heights, MN 55720 WWW,Pioneereng.wm �ad"ly L'c°''`cd RP2a °ow Engineer aa7G aeagnea �L wdcF,he leas otmc Sazc Of Muvle :ou aeg. ND. DaLP Dra..n a WAYZATA, MINNESOTA 55391 _T CHANHASSEN. MINNESOTA TREE PROTECTION DETAIL NOT TO S SCALE TREES TO BE SAVED WALL I I NSTALL TREE OR 90 B p mwr o sAUE TI E As LAND SU FFICE AND STEEL _ _ _ _ P PROTECTON FENCE SHOULD OR AS DIRECTED BY THE a ° D _ R aLL pwSTRUCTq+ IS RE w AN ° ° N IN REUOVED, A ERATON OF SOLS DUE C \ C CONSIRUCTw 5 PAN SPLLLAOE OF L AN To.. 7365 .,, r � , b ; ; 17 .7208 '.� 7119 f 7 \ f / }. 7,3 7116 298 7 I f• /I i i ... °•�' / t t , _ \ %•7297 eNb ,..,. 7117 1 0 7296 71221 7914 ,7 ;i'..• r .- 1 /',\ \ �_77A0._ 7252 " _. - , 4< < ".. '> f t \ i 47287 — ei z 7 I ;, '' I iJ '' �� it 4 =728& ,;r,..._._... 7z76,.. _ TREES IN FUTURE PARK / : � _ I ��9a 72 �z�r1� 1 'a \ \ AND WETLAND AREA 7z 8 ' - BUT NOT INVENTOR SEE SHEET T4 FOR TREE INVENTORY LIST ,t s -- 7.356 73 $81. {i : ' / �. �. \ _ T :4 \ \ - -_ —f, f i =• f— ..L... _ _ ; �.....' �..,, '' i 2,1 �s1a v _ 2sssi zP i E 7 ' T I / z �/ zlas 1z4 71 //0 \ 7 a2�21 a 2SS _72 � r a8�� 735 7. 7`," 7 } � ` II `\ 7169!.. 722 yy 22 73y� G t ; -, \ !\ ,1 741 245 I °I 4 7352 I f.; \ \\ \\! 3' \� \ \ _ 92847z$3 \ \ }$25 \� \ti�247 133 =fil Ir �.: �i .t \ \ \ 7166 - _ !• 7159, \ \ \ \ \• ,67 :_77 7 6 `.� TREES \ = =,- �;, ; \ 7222 �z�3 IN P9c SANITARY PIPE TO BE REMOVED tt \\\,,, 7 O �. \ .;!, "�- ` 5 .' - t E. \\ 7165 I t,71 44 /e \ I X Ir } y I { r _ 7 i - 7256\ \ ` , 225 7f5 734 FJ34 r / \ \ 7 i 7,160 727`, -¢ \R 4S li •734 p .� S' \ K - 7 t� 7149, \ \ �\ 3$0 T, \ J, n : d3 BAR 1 7 6 i 2 71 #87T45 `7 _ 241 '� .,\ \ ' I� �j 14, 72zF0 i...... 7239 7 \ 71`51 723p { 72 F i i �' � , \1 f' \ i' - r. z � �� ~�� 227 725r \a` _ I 715E _ y r 0 25 50 100 _ e PISNEER eng i ne erzng GRAPHIC SCALE IN FEET rnv. FR;UTxtsys LAND SRS —U., _" 110211 MO2 I heFeL, y a I�aLL,li1 waspreyared Rev�s;ous LENNAR LAKEVIEW 6. 2422 Enterprise Drive (651) 68] - 1914 Nama Dale 1D - 15 - m TP a d,dy r my dire, I.m.A ioa and 0La I Fax orn 63 L. TbOmOSOn TREE PRESERVATION PLAN 935 WAYZATA BOULEVARD EAST T2 OF 4 Mendota Heights, MN 55720 WWW,Pioneereng.wm �ad"ly L'c°''`cd RP2a °ow Engineer aa7G aeagnea �L wdcF,he leas otmc Sazc Of Muvle :ou aeg. ND. DaLP Dra..n a WAYZATA, MINNESOTA 55391 _T CHANHASSEN. MINNESOTA • • 1 - • { - \ - .- - _ � ._ - - - - . -- _ - /ems .:.,. - . a .' / !� ✓�,;,f" /� / , r r /' fi -�' ,r k 46 .- ' r - - r I f f z .- \ x- 675 - -'" / \ , i i, 4 �-� r, j Z \ - ,r f \. t v ' ".:,.. r" � - -.. ,�� r' =" \ - / /<; •. ,..% ': I � � - ,.,��`� - '� } �� I ! �t �i�� T r/ � i /�/ cam-- ,,, �� ✓'_-- r` .�. - ' '' I o ^t' '- -� -. i� „.- ..-.z' I ,• � - � 04 _ r i .,v.... ___-- - - = .� F A _ [ i - . -t- �,... I 34 I \ \ \ 1 r `(, r i'' T J 1''' \ i �'t` !k'�� "�`-. ,t - ✓r s > -.' } r ' �' \T, ¢,�'' Y, �" _ rl '� E a`' \ f e - -•?� -- - 'i. T - .k. `f - � /"r -' Ci7 ; t !,- r �! L �/ J �, ._.. �� r •' f � i / • /. � _�-^ �' ! _" ...I t I � 1 r -.. \ \ `. X „1 � -i , - , d ......_ � �- _ y � � � i 1 ' f % F t ,{r` f J. � t ,J.' � ; � ~ `\ l \ • \ ��\ \ jj / � %1' f ::1.;:•T' ; ,/X } t \ X SZ ' {- 1 I y_• -c;- v ;'� I<I - r' s t r^ i / t I t ' j 1 f t / /` j ' ��;-� i! \ \. }.. - . �€\ \ - i .{` `•- -1,. t - - - f ! , '� I' % t :., t .r. r ; ^-<• <,a-� i t + 1 , � E ;} i •<��.::. ; �,_ - ” , - =`,, ,- _ fit° f � ' !, sI. p t t ��r•;,, � � :'�,. k - : , 1 } f } € ._._. _... .. ..... ._.........../ : - \; t � \ : i.{ . � `r ��7•;f' / I I I ? { ! 1 J" r t ��1• r ~ -,\\ e I r r ` f / \'`. - `t. if f ... r r . \ r t `•v...:....�r. € I t N , f i .. _...... -. - c.,• -F } } , ` :\ (,i' , t Frf70 4,..c. i i I i t , „ , = :: € : ' . . + , i t r /i i f 3 i '.� 1 ! ��•'` f \ ,tI f r J J f r \ f \ : 7 r �j i If1i:, !i t { rr, r rfi' !f .. i - r' =i • } ;•.. t ! 1 : ` ri r \ _ _ J;f X o zs so loo - _ __.. � ,<:.x i - �i '= ( I I I I • � ` �'f _ _ k r r , , r ` \ ,� . � .. _.,� , f t f (\, �•,. �.,_ ., . \�tf' /, ?,i. €+ I I I \ [ j € . �' - � - , °_L ,. ; r r ! Fir f _ - U1 :I { t ` N a t - f , j J r I l'•, r,` {J /j/ !,,,• \ \�< GRAPHIC SCALE IN FEET , I i f t !' f v� l J fr 1 } l if `'i # ,', #f;. I . '�I ' I r'; I' _ =%'-%' - 'A' ' , €; t f c !' `l t [:,,`,,,/ t'#��,'1 , \,., . _. - - x € . i - - . >.�- - - :. ...a -- t : r: t ! i f t t : '' ,;F / ' . • i y \ \ ! I 'y4 \ f I f ( / •(�, l' /i } I` ( t -'-} d i f € ! i r 1 fr !' t r- \7421 r ii' 3 r „ : :c, t ! I I •>, i s, s }€ €�. t # t} . , ; j /� \ I ; r t t ,�t r, 73 742 74'73] ' It �. , .,...�.,zl ' a` r 7 / — 742 - �.;r -.r'' '.!• ^�- ``_ t ...{ I I _ �.-- V>:`°�=' : € , i € } ( _ I ;.� r� f r' j �1: =` / ,' :• :'. } T -� ... 7 ;-'-t } t t % 'ice: = --'�' �! 1 y�' I'' /�. , / / Cfl / / ' /t J'417,% _ ; r/41 §' 44 E i , I i ! r ,\ i . -' . - . - f 1 j j I I ; I f €` ! I j } 'y' /, i j`”' , - y - , ^' •e; , :�' - J - \ _ _�,. , j t }' f ,/ ! - I`' - l /y , - _ ' i I $. � /✓ t I I 1 N } ! f i- } ,t i / 1 € t 1 j` / / � x�\ /r. , , f / 1 7fS'I / � 73 74 ,:_q. ..... I ; , :. i f .€ � �: I r , ,, „._...., r l � I I i� - +-,_ ._ •'=_g l :1 , a. i �k r \ ,i i' � . i ' I ! •^ ...- - \ ..a_.� '• , , i € [,'` �- r { }, i€ `i i j.' ' r_ F- ;` - �� Y i �.' / `�12 / �• € } i / !, i r ,} Y \`../_ _.d - /:. (, � / // t ._ -_ ,'� , .- � ?; x; f � 1 '-�? .. I f l�l `.\ Ni i i } ' • ; ,l /�, I d y y ,�., j// `•\ i” : f � 1 � N � F , EROSION CONTROL FENCE/ 1�1" s : /' /' :f1,•� / € + �.,- -2'0° ` ,.""' ,f-' / i /� „'' / / .- ��- --r` ----- t ;,c�\. �._ ' \/�9 i i /j /\ 7 yr � - TREE PROTECTION FENCE 1 IN Jv It A q -- '( y ��.6i / ,.• /� / /'' / '2 ;,/ �\ i } \_.�:-::.: :,�.::,:�,,,,* i A`•` .. \_.- ._;+ -'"'.. -'' . 1`1 .,.o'" r` 1 f:!� . ;. ., = .;io " " _.s,, ' X411, I \ WETLAND , \ �,. �'; , `� i C ..: \"• _ -, a l,r mo w ..._._ ,, \ ,' / ' 1, F ,,, ,� ,y ,.3 l;t I- .�_- ._.,�.. , < l.\ O t t { ;\� \ Y r ..,• �ir7i :` N ✓)} „!' - w / r , .020. 7021 x / r �'� � t [... �Ii .. . `�.;., ' � �•'•"�`_ °y,,, /, J .. , ri /' F / .r.' � __- „.""..a "'_ ��.� -- - -' ---”' �, 0 i'7�28 ,( / 111 SEE SHEET T2 FOR TEE PROTECTION DETAILS PI ONEERengineering _ SEE SHEET T4 FOR TREE INVENTORY LIST 110211 TRU2 • rnbacw� twxoer.vn+Exs I.,em.ua, Exou (5$1)681 -1914 1h by <errit}•Nal litis plan ryas prepared lry Nemc Revisia,s Dam 10.15 -10 LENNAR Me.dot terprise Drive e,rc,mder my d'ven Npervlsion and m a.' TREE PRESERVATION PLAN 935 WAYZATA BOULEVARD LAKEVIEW T'3 OF , 4 Mendota Heights MN 55120 Fax: 681 -9488 amadmy tecros<dpr�fessi��m>;,g;nee,. �wwar l..'momvsm, Desp,ea gr - pioneereng.wm ,order nc� laws or me Surcofn�;mresofa Reg. No. .763 Dam D.- dl WAYZATA, MINNESOTA 55391 CHANHASSEN, MINNESOTA w �v,v Hooter u,gurcmng • 0 Tag No. Tree Type Tree Size Co®ents Tag No. Tree Type Tree Size I Counts Tag No. I Tree I} Tree S¢e Cotlmrols Tao No. Tree Type free Size Corte rents 6736 Blad<Cherry 12 7061 Boxelder 14 7335 Green Ash 12,10 7408 Green Ash 11 6737 Boxelder 10,10 7062 Boxelder 12 7336 Green Ash 10 7409 Hackberry 12 6738 Boxelder 12 7063 So-lder 16 7337 Green Ash 11 7410 Red Oak 12 6739 Boxelder 11,10 7064 Boxelder 12,18 7338 Boxelder 10,10 7411 .Red Cedar 3 6740 Elm 10 7065 Boxelder 14 7339 Boxelder 14 7412 Boxelder 11 6741 Boxelder 13,10 7066 Boxelder 16 7340 Black Cherry 12 Dead 7413 Boxelder 13 6742 Boxelder 11 7067 Boxelder 12 7341 Boxelder 11 7414 Boxelder 13 6745 Green Ash 16,16,14,14 7068 Boxelder 12 7342 Red Cedar 4 12' 7415 Boxelder 12 6746 Green Ash 16,14,14 7069 Boxelder 14 7343 Red Cedar 6 20' 7416 Boxelder 14 6750 Green Ash 16,16,6,10 7070 Boxelder 10 7344 Red Cedar 6 20' 7417 Elm 12 6751 Green Ash 11 7071 Boxelder 10 7345 Red Cedar 3 12' 7418 Boxelder 11 6753 Green Ash SO .....:....... 7072 ... Boxelder 13 ........... ........... 7346 ..__. ..._... Red Cedar __.._. ......... 4 12' _...... ...... .......... 7419 ............ Boxelder ...__ _._._.._. ............ 12 6755 Green Ash 12 .............. 7073 _... Boxelder _._. 18 _...... ............ ........... 7347 ......... ..._ Red Cedar _ ___ 3 ......... 10' _..... .... ..._.... 7420 _....... ........... Boxelder _. __. _..... ........... ......... 20 6757 Green Ash 12 .....__._. 7074 _... Boxelder _..__ 15 ....... .. .......... 7348 .._..... __. Red Cedar _ 3 10' .. ... ....._. 7421 ............ ............._.. Boxelder ____. _..._... ._.............. 16 6758 Elm 12 7075 Boxelder 10,10 7349 Boxelder 20,20 7422 Boxelder 10 6759 - Red Cedar 8 25' 7076 Boxelder 16 7350 Boxelder 17 7423 Boxelder 13,12 6760 Red Cedar 6 15' 7077 Boxelder 14 7351 Green Ash 10 6770 Green Ash 11,10 7078 Boxelder i5 7352 Cottonwood 10 - 6771 Boxelder _ Boxelder 10 7079 Boxelder 12 7353 Green Ash 12 7001 12 7080 ......... 12 _..... .7354 _..... Green Ash ___... 16 __... 7002 Boxelder 12 7081 Boxelder 10 7355 Green Ash 15 7003 Boxelder 10 7082 Boxelder 18 7356 Boxelder 10 7004 Boxelder 12 7084 Boxelder 12 7357 Green Ash 13 7005 ._._.. Boxelder 35 7065 Boxelder 16 7358 Boxelder 10 7006 Boxelder 11 7086 Boxelder 15 7359 Boxelder 12 7007 Boxelder 10 7087 Boxelder 10 7360 . _, Gre en Ash 9 7008 Boxelder 11,10 7090 Boxelder 12 7361 Green Ash 12 7009 Black Cherry 12,12 7091 Boxelder 12 7362 Boxelder 10 7010 Red Cedar 9 7092 Boxelder 14 7363 Green Ash 12 7011 Boxelder i8 7093 Boxelder 12 7364 Green Ash 15 7012 Boxelder 10 7095 - Boxelder 12 7365 Boxelder 14 7013 Black Cherry , 13,10 7096 Boxelder 14 7366 Boxelder 16 7014 Green Ash 10 7097 Boxelder 12 7367 Green Ash 18,18,16,14 7015 Boxelder 10 7098 Boxelder 12 Lean 7368 Boxelder 14 7016 Boxelder 12 7099 Boxelder 14 7369 Boxelder 12 7017 Boxelder 12 7100 Boxelder 10 7370 Elm 13 7018 Boxelder 16,18,12,12 7101 Boxelder 12 Lean 7371 Elm 10 1019 Boxelder 20,18 7175 Boxelder 16 7372 Green Ash 28,24,20 7025 Elm 11 ........._._.,, 7176 Black Cherry 12 7373 Basswood 12 7026 Green Ash _. ._. 12,12 _.. 7177 Boxelder 14 7374 Green Ash 10 7027 Green Ash 14,12 ................ 7201 .... _.... _......._.... Boxelder .__............ 12 .......... .................. ..__... 7375 .......... Basswood 16,14,14,14,12,12,10. ._ ............... ... 7028 Elm it 7202 Boxelder 12 7376 Green Ash 24 7029 Boxelder 13 7203 Boxelder 14 Severe Lean 7377 Elm 10 7030 Elm it 7207 Boxelder _ 8 Non - Significant 7378 Green Ash . 7031 Cottonwood 36,30 7209 Boxelder 12 7379 Green Ash 12 7032 Cottonwood 15 _ 7210 Boxelder 38 7380 Red Cedar 3 10' 7033 Cottonwood 18,16 7301 Boxelder - 14 7380 Green Ash 10 7034 Elm 15 7303 Boxelder 12 Lean 7381 Green Ash 11 7035 Boxelder _.. 36,28,20 _. 7305 Boxelder 32,12,34 7382 Basswood 11 - 7036 Boxelder 15 7307 Boxelder 10 Severe Lean 7383 Bur Oak 13 7037 __ Boxelder 15 7309 Boxelder 12 Lean 7384 Basswood 18,16,14,14,12 - 7038 _ Boxelder 14,12,10 _. 7310 Boxelder 12 Severe Lean 7385 Elm 11 7039 Boxelder 30 7312BOZelder1214 7386 Basswood 3 �� 30,26,20,18 -- 7040 Boxelder 14 7313 Boxelder 12 7387 Boxelder 12 7041 Boxelder 12 7314 Boxelder 11 7388 Boxelder 13 7042 Boxelder 16 7315 ........ Boxelder it 7389 Boxelder 11 Lean 7043 Boxelder iS 7316 Boxelder 10 7390 Boxelder 12 Lean 7044 Elm 15,18 7317 Boxelder 10 Severe Lean 7391 Basswood 24 7045 Boxelder 13 7318 Boxelder 12 7392 Boxelder 12 7046 . Boxelder 15 7319 Boxelder 10 7393 Box 14 7047 Boxelder 15 7320 Boxelder 10 7394 Red Cedar 3 10' 7048 Boxelder 18 7321 Green Ash 10 7395 Green Ash 12 Lean 7049 Boxelder 12,17,12 7322 Boxelder 12 7396 Green Ash 11 Lean 7050 ...,... Boxelder 12,16,12 7323 Black Cherry 15 7397 Elm 11 7051 Boxelder 10,12 7324 Elm 10 7398 Basswood 13,12 7052 Boxelder _ 12 _ 7326 Elm 8 Non - Significant 7399 Basswood 20,18 7053 _- Boxelder 15 ................... 7327 Elm 10 7400 Basswood 12,10 7054 Boxelder .._ 20,25,2Q22 7328 Elm 11 7401 Red Oak 16 7055 Elm 13 7329 Red Oak 10 7402 Red Oak 14 7056 Boxelder 12 7330 Boxelder 12,12 7403 Basswood 14 7057 Boxelder 14 7331 Red Oak 10 7404 Red Oak 22 Dead 7058 Boxelder 13 7332 Elm it 7405 Bitterest Hickory 12 7059 _. Boxelder 15,52 _SS 7333 Green Ash 107406 Red Oak 13 7060 Boxelder 7334Boxelder 12 .. ._ ............... 7407 ......_...... Bas swood _._ 13.12 ... _. PIONEERengineering 2422 Enterprise Drive (651) 661 -1914 Mendota Heights, MN 55120 Fax: 681 -9488 www.pion ereng.com X.�r:WW ` 1 • P ol \ CO � ro n I �\ \ v`. /� VY :. I L J f 1 00 I i • - 'BS PION 2422 Enwprise Drive Twxo Mla (651) 681 -1914 Mendota Hei¢hes, MN 55120 Fu: 681 -9488 — .pion —nB. -. ?010 PioLI i i �N •\ 1 � t; r�. O r KEY COMMON NAME SCIENTIFIC NAME ROOT QUANTITY SPECIAL INSTRUCTIONS OVERSTORY TREES HB WA CKBERRY /CELTIS OCCIDENTALIS 2.5" BdrB 14 HL THORNLESS HONEYLOCUST GLEDITSIA TRIACANTHOS INERMIS 2.5" B&B 16 NM NORTHWOODS MAPLE /ACER RUBRUM 'NORTHWOODS' 2.5" B&B 9 RB RIVER BIRCH /BETULA NIGRA 'HERITAGE' (CLUMP) 10' B&B 29 RO RED OAK /OUERCUS RUBRA 2.5" B&B 17 SL SENTRY LINDEN TILIA AMERICANA 'SENTRY 2.5" B&B 16 SM SIENNA GLEN MAPLE /ACER FREEMANII X 'SIENNA GLEN' 2.5" B&B 15 EVERGREEN TREES BS BLACK HILLS SPRUCE /PICEA GLAUCA DENSATA 7' B&B 66 7' AVERAGE HEIGHT, 6' MINIMUM ORNAMENTAL TREES JTL JAPANESE TREE LILAC SYRINGA RETICULATA SINGLE -STEM 2.5" B&B 20 PFC PRAIRIFIRE CRAB /MALUS 'PRAIRIFIRE' 2.5" B&B 17 SDC SNOWDRIFT CRAB MALUS 'SNOWDRIFT' 2,5" B&B 13 STC SUGAR TYME CRAB MALUS 'SUGAR TYME' 2.5" Bdr$ 16 TREES ON PRIVATE LOTS TO BE PLANTED AFTER HOMES ARE BUILT. CITY PARK TO BE DESIGNED AND CONSTRUCTED BY OTHERS CONIFERS TO BE A MINIMUM OF 6' IN HEIGHT WITH AN AVERAGE OF 7'. FRONT YARD DECIDUOUS TREES MUST BE A MINIMUM OF 2.5 ". ALL OTHER DECIDUOUS TREES TO BE MINIMUM 1.5" WITH AN AVERAGE OF 2.5" TOTAL NUMBER OF PROPOSED TREES: 248 REQUIRED NUMBER OF TREES: 248 (SEE TREE PRESERVATION PLAN FOR CALCULATIONS.) 0 DECIDUOUS TREE PLANTING DETAIL CONIFEROUS TREE PLANTING DETAIL SIDES OF H ME EXCE > Rtu WT DEAD IOOD AND wA1ER i0 SETTLE PV.N15 AID iRU Wi DEAD IV00 AND wA1ER i0 $ElllE PLANTS AND WEAK AHD /OR DEFORMED FM11 uD105. ^+iD /OR DEFORUED TI cs. o2.nsI aT A ,`xc LL MDS. s. Bnn¢1 CUT A WETLAND EADER. DOJOS P. WATER mMH T. HOURS OF _ER. pp_yQ[ PAMT wNS R M1HIN ixO Of ST / Wtt BE SUFV'ICIENi to giERING�u 0 U 1 5y STS' 111 \ l ALLgC EN w Ix uv ..\ ' / ;, SET U N DI STUR B ED LAIT 01 NniINE SOL PlaxllxG w0.E1 PILL ` S uRgFTEC SU TO 6 0R u pGHLr SET PLANT ON 3 lu RiIMW IATIW SOL ` —.DID HOLE C d -ITS. A."Ll PLA BCE uULM vnMIN ae HOURS COMPACTED BICKFILL j/ ` PLAC` IULCI LI,NN MI HOURS L x ALL PLANL 50 O E sfCON. I—NC TML. STALL PLANT SO Di HE SECOND wIIERMG J % r ,./ I'•, THE ROOT FLARE IS IT ITIE a UNLE SSrv— MOISMRE IS E ROOT FLARE S AT � �� " \� �, LESS SOL MOSIURE I$ F M UP r0 2p� — SSIVE OR UP TO SHED GRgDEO a N Fx5HE0 G J \`" SHREDDED w000 uULOi MIN. s' PC PLANT P f fff ((( SHREDDED WOOD MULCH u P LAN N LANING •W DEEP ,+ (pp Np? PLA[E uuLCH ry,E xt1H BURLAP AND '� G � y \ L �' AGAWST TRUNK OF EE). A ✓ j PLACE PLARL M PLANTING a DEEP i (D➢.tlOI PLACE M t I HgLE E B LH BuR v AND gGUNSI UNK OF TREE). wRE BASKET, (F USSE1M). ASKET 1 uSED). IN BICHFILL NIn u8 AND BACKF NTACi BACKFRL PLUMS AND BACKF�LL IN 'n LL IN APPROpugttLr 12' q N L v � BACNFILL SOL BREAK DOrm Z / "f. \ ``� T E TOP OF R HU 00,8A P OE WHEN DOIR w E TOP AT RO1B SIDES OF HOE MEN 21 l j y',�i } ! wniE PLWt REUOVE BACHFILL nG ,Ey, P LANT, E OA BA.11UH. j \ t '` / a ix[ fiPP TwDEHBORIZONTAL ME NP N,O HOn2p+ T TA X I / RM si R OEUOR 1S _ GRE hR MREUp�E I S GR E R T ALL ND LS Frt BURL AND NAILS FROM BUR rO NOCE OF E �c�' M TOP TOP / wOODL AND AREA RFr eODOR AN vLAN Mc E PRIOR TO samFr BoTTM AND ES OF HOLE PRIOR TO SLOES OF HOL RL WIND. 2 -5 TIMES BILL DIAMET TIES BILL DIAM t\ i/ U•2 court busk ttiOR ._ L ANDSCAPE NOTES ` • - -- - - - - THE LAx05CAPE CONTRACTON SHILL HSIT ME PRO.ECT SITE TO BECOME FIML IN THE Ex SING COI —ONS v �, S S `, ` \ 5 - I A V - — Preore TO suaM rnrve . BD Y ...— . \ \\ THE LARDSCAPE CONTRACTOR SHILL NOTIFY ME LANDSCAPE ARCHTECT OF PROPOSED PHYSCAL START DATE AT LEAST Z DAYS N ADVUaE. _ �. \ - _ _ _ \,•C \ - THE LANDSCAPE CONTRACTOR SHALL BE RESPONSIBLE FOR THE FIELD VER FICIION OF ALL EISING UM Tv _ \ y y 4 i \ � - F - PONS ON THE PROECT SITE "TH COPIER STATE ONE CALL 1- 800 - 252 -1166 PRIOR 10 CMNENONG IORK THE \ \.` _ ^ / \\ DAMAGED DSURNINGCCON S,RUCIION SHALL BE AT IO COST TO ME OwNERE RROIE AND REPIR OF ME LA OSCARE IRMIIECT OF NU AN Y CONFUCTS TO FAOUTATE RA.T RELOCAIM GRADIRIC r0 BE PERFORMED By OTHERS. NO RANT MATERIAL SHALL BE INSTALLED UNTIL GRAONG AND CONSTRUCT HAS BEEN COMPLETED IN TIE \ \\ ( MMmA E AREA – - j �\ \ \ 1 '. ! I /' \ MATERIAL SHALL MEET THE STANDARDS FOUND IN THE AMERICAN ASSOC ATON a ...", NURER»IEN-ANEF CAN STANDARD FOR NURSERY STOCK. p, WOODCAtdO -. AREA \ -. N SPEED Al. C TREES STARED. lM ONLAINER MATERIAL i0 BE CROWN M THE CONTAINER a uxuVU OF SIx (6 ) CONTRACTOR PRIOR i0 PLANING ON \ " " SIZE \ lA\ IaNDECOS AND TREES SHALL NOT BE STARED. BUT ME LANDSCAPE CIRAGipt MUST GUARANTEE 1 ` IOI .•. " \\ Y'� I 1F J/ � \�' SDAe L TV TO A I 1xD SPEED OF 60 MPH ' lJ - \ —I _ 1 ?. /" // / / - \`• TIE LANDSCAPE CONTRACTOR SHALL PRONDE A M GUARANTEE OF ONE YEAR ONE T REPLACEMENT ON . �Q. .... /� \ 1 j . //j / / \\ \� NCI PLANT MATER . GUARANTEE — BE IGREED UPON BY DEVELOPERAULDER AID LANDSCAPE CONTRACTOR. \ J l - A E.e r RESERVES ME mMT to RcT ANT PLANTS ». cH ARE DE sgr MED ury sFACroRr BEFORE, DUR NG OR . Af .. IER I uSTAUgION I. \• \� F MRE 1S A DESCREPANCr BETWEEN THE NUUBER OF PLANTS SHOWN ON TIC PLAN AID M IUMBER SHOW ON ME PLANT L TIC IUMBCR SHOWN ON ME PLAN w TAKE PRECEDENCE. \\ CITY PARK - - /•• /`\ \ LANDSCAPE CONTRACTOR SHALL BC RESPOIS16LE FOR ALL IL—ESAND PL.NTING SAL waNnTES TO E / / / \ .� .� CORKETE IORK SHOW M TIE KAR. ME LAIDSCAPE CONTR A craft SHILL VERITY ALL OIIANT TIES SHOM ON M ' \ EDOUG SCHEDULE. HI DESIGNED AND �6LT'•$Y , OTHERS P LANT PPARK ELEMENTS' SHOWN.FOR INFORMATI 4AL PURP,O$ES ONLY C OMMERC I AL GRADE PaY MIN LL BE I NSTALLED WERE NO MO ___ TIE LANDSCAPE CONTRACTOR SHALL REPA ALL DAMAE NE TO ME S CAUSED BY TIE PLANING OPERAT AT / 1 \ NO COST 10 rHC OwER TIE LANDSCAPE CONTRACTOR SHALL KEEP PIVEMENiS ALLAN UNSII NEO ALL PEDESTRRE AND F R I ACCESS i ' •'" .. - " ' \ "' / 10 BE uuNT NED THROUGHOUT PER W. WASTES SHALL BE PRMPnY REUOVEO FROM ME SITE I - ANY DAMAGE EXISTING FACL TES SHALL BE REPa RED IT ME COITRACi0R5 EXPENSE ... \ _ II / ¢ r / o zs so 00 �•� _ .. - _ - ME CONTRACTION SHILL BE RESPONSIBLE FOR CDUPLnxG IN ALL APPLICABLE CODES REGULATIONS AND PERUHS GOVERN rv4 ME WORN. \ \ ) \. L L � MATER OR SUPPL ON-SITE w NOT BE ALLOMED. GRAPHIC SCALE IN FEET 1 hereby 1rn 1 UUU Nis plan was PlpBTld by Name I and UUL I Revisi TRY dues s ,,vision Jemurl L. 7Tompsml am e ON., a duly Rcgi —Pt! 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No. yam Ihawn dr WAYZATA, MINNESOTA 55391 CHANHASSEN, MINNESOTA r 1 C 0 USDA United States Department of Agriculture o MRCS Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Carver County, Minnesota Lennar - Lyman Blvd Project October 5, 2010 • Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http: / /soils.usda.gov /sqi /) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (http: // offices .sc.egov.usda.gov /locator /app? agency =nres) or your NRCS State Soil Scientist (http: / /soils.usda.gov /contact/ state Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Soil Data Mart Web site or the NRCS Web Soil Survey. The Soil Data Mart is the data storage site for the official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited • bases apply to all programs.) Persons with disabilities who require alternative means • for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720 -2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250 -9410 or call (800) 795 -3272 (voice) or (202) 720 -6382 (TDD). USDA is an equal opportunity provider and employer. U • Contents Preface ...................................................................................... ..............................2 HowSoil Surveys Are Made .................................................... ..............................5 SoilMap .................................................................................... ..............................7 SoilMap .................................................................................. ..............................8 Legend.................................................................................... ..............................9 MapUnit Legend ................................................................... .............................10 MapUnit Descriptions ........................................................... .............................10 Carver County, Minnesota ................................................. .............................13 CW— Cordova- Webster complex ................................... .............................13 EX— Essexville sandy loam ............................................ .............................14 HM —Hamel loam ........................................................... .............................15 KB— Kilkenny- Lester loams, 2 to 6 percent slopes ........ .............................16 KC2— Lester - Kilkenny loams, 6 to 12 percent slopes, eroded ....................17 KD— Lester - Kilkenny loams, 12 to 18 percent slopes .... .............................18 KD2— Lester - Kilkenny loams, 12 to 18 percent slopes, eroded ..................20 MP— Klossner and Muskego soils, ponded .................... .............................21 • TB— Terril loam, 0 to 6 percent slopes ........................... .............................23 W — Water ....................................................................... .............................23 YB— Rasset- Lester - Ki [ken ny complex, 2 to 6 percent slopes .....................24 YC— Rasset- Lester - Ki [ken ny complex, 6 to 12 percent slopes ...................26 YD— Rasset- Lester - Kilkenny complex, 12 to 18 percent slopes .................28 YE— Rasset- Lester - Kilkenny complex, 18 to 25 percent slopes .................30 Soil Information for All Uses .................................................. .............................33 SoilReports ........................................................................... .............................33 Soil Physical Properties ..................................................... .............................33 Engineering Properties ( MN) .......................................... .............................33 References ............................................................................... .............................44 • 4 • How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. • The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil- vegetation - landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil • scientists classified and named the soils in the survey area, they compared the Custom Soil Resource Report • individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and /or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil - landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil - landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. • Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field - observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some. interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit. Aerial photographs show trees, buildings, fields, • roads, and rivers, all of which help in locating boundaries accurately. 11 • Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. • • 7 Custom Soil Resource Report Soil Map MW&r • .., u ww u soar W,S ': 12,53011 Plow. B... (11" tr)sheet N Metes ^ 0 15 30 60 90 & Feet 0 50 100 200 3l%1 • V_ O Q N N U 7 O N N O U) E O N U • C O_ o OC7 o @ E c x m r a) @ U cc ca @ N N @ U Z@ M O Q C o a U a) C) c rnE N a) @ v>> C ° _NC a ° Z @ E o _ @ c o @ co N O N 0 x a) M d U z ° r L H d N Z U a) N O@ Q v a) O @ E o o . Z 0 C N N L L 3 @ N C Q V O�U) _ E 09Q� 0 LL 0 >' c o 0 3 'o 00 o E?'@ a) Z m N o O a) aN) 0 2 Eo o Uc o n o a)mEn o CL E @ U L N ' a O _ >` ` `m n°0E cu Q O O U N 7 = (6 J � a) @ N @; U >> N N n :S N L C a) C ° O N O@ o m y ma) � m E L-a)a o c O 'O Z O C T @ 7 U) N ca 'O O Q@ @ @ O L� a L a ca ( n O > Q @ L 'p 3 N Z cu CL a) a E o o a)E @E E w U r Cl) U) I (°) o n a U) N co C co U N > R r U T C d D C O rn = N N 0 a N U) U) �_ A Y U) N N N N N m 0 K IL T � ` N N O la a) ° __ > O d c 0 t r U) O n U 3 u d O u) c . 4 w ° to m - o 0 J A a) LL R (D N �+ Z 8 i , d () t .2 C W N m A + t t (7 a. W J CL - a Q C ° N U) C a ) N N C O O Q W U) C l) >` g _ _ O N O N d N O_ Q Q LL O O a) 'O U T N N O O L O t0 N > O N > l0 N N d N C_ N_ Y O C V la a) C O d O ` Q U) m m U U O_ w ai (l U) U) U) '� (n U) U) (n U) d c a E m co 2! O m Custom Soil Resource Report • Map Unit Legend C Carver County Minnesota(MN019)., Map Unit Symbol' Map -Unit Name Acres in AOt Percent of AOI CW Cordova - Webster complex 1.2 1.5% EX Essexville sandy loam 6.7 8.6% HM Hamel loam 0.3 0.4% KB Kilkenny- Lester loams, 2 to 6 percent slopes 13.7 17.5% KC2 Lester - Kilkenny loams, 6 to 12 percent slopes, eroded 14.4 18.5% KD Lester - Kilkenny loams, 12 to 18 percent slopes 1.5 1.9% KD2 Lester - Kilkenny loams, 12 to 18 percent slopes, eroded 2.0 2.5% MP Klossner and Muskego soils, ponded 11.0 14.2% TB Terril loam, 0 to 6 percent slopes 4.2 5.4% W Water 1.4 1.8% YB Rasset- Lester - Kilkenny complex, 2 to 6 percent slopes 5.3 6.8% YC Rasset- Lester - Kilkenny complex, 6 to 12 percent slopes 5.4 6.9% YD Rasset- Lester - Kilkenny complex, 12 to 18 percent slopes 6.1 7.9% YE Rasset- Lester - Kilkenny complex, 18 to 25 percent slopes 4.7 6.0% Totals for Area of Interest 77.9 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. • Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called 10 Custom Soil Resource Report • noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons • that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha - Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up • of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. 11 Custom Soil Resource Report • Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. • C] 12 Custom Soil Resource Report • Carver County, Minnesota CW— Cordova - Webster complex Map Unit Setting Elevation: 700 to 1,600 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Cordova and similar soils: 70 percent Webster and similar soils: 30 percent Description of Cordova Setting Landform: Drainageways on moraines Down -slope shape: Concave Across -slope shape: Linear Parent material: Till Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained • Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 6 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content.' 20 percent Gypsum, maximum content: 1 percent Available water capacity: High (about 10.6 inches) Interpretive groups Land capability (nonirrigated): 2w Typical profile 0 to 13 inches: Loam 13 to 33 inches: Clay loam 33 to 80 inches: Loam Description of Webster Setting Landform: Drainageways on moraines Down -slope shape: Concave Across -slope shape: Linear Parent material: Till Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained • 13 Custom Soil Resource Report . Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in /hr) Depth to water table: About 6 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 30 percent Available water capacity High (about 10.6 inches) Interpretive groups Land capability (nonirrigated): 2w Typical profile 0 to 14 inches: Loam 14 to 20 inches: Clay loam 20 to 60 inches: Loam EX— Essexville sandy loam Map Unit Setting Elevation: 700 to 1,600 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F • Frost -free period: 155 to 200 days Map Unit Composition Essexville and similar soils: 85 percent Description of Essexville Setting Landform: Moraines, beaches on lakes Down -slope shape: Linear Across -slope shape: Linear Parent material. Sandy beach sediments Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in /hr) Depth to water table: About 0 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 30 percent Gypsum, maximum content. 1 percent Available water capacity: Moderate (about 8.7 inches) Interpretive groups Land capability (nonirrigated): 5w • 14 Custom Soil Resource Report • Typical profile 0 to 15 inches: Sandy loam 15 to 30 inches: Sand 30 to 80 inches: Loam HM —Hamel loam Map Unit Setting Elevation: 700 to 1,600 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Hamel and similar soils: 85 percent Description of Hamel Setting Landform: Drainageways on moraines Down -slope shape: Concave Across -slope shape: Linear • Parent material: Till Properties and qualities Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 6 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 20 percent Gypsum, maximum content. 1 percent Available watercapacity. High (about 11.6 inches) Interpretive groups Land capability (nonirrigated): 2w Typical profile 0 to 24 inches: Loam 24 to 46 inches: Clay loam 46 to 60 inches: Loam • 15 Custom Soil Resource Report • KB— Kilkenny- Lester loams, 2 to 6 percent slopes Map Unit Setting Elevation: 700 to 1,600 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Kilkenny and similar soils: 60 percent Lester and similar soils: 40 percent Description of Kilkenny Setting Landform: Moraines Landform position (two - dimensional): Backslope Down -slope shape: Linear Across -slope shape: Linear Parent material: Till Properties and qualities • Slope: 2 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 20 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Gypsum, maximum content: 1 percent Available watercapacity. High (about 10.5 inches) Interpretive groups Land capability (nonirrigated): 2e Typical profile 0 to 11 inches: Loam 11 to 35 inches: Clay loam 35 to 80 inches: Loam Description of Lester Setting Landform: Moraines Landform position (two - dimensional): Backslope Down -slope shape: Linear Across -slope shape: Linear Parent material: Till • 16 Custom Soil Resource Report • Properties and qualities Slope: 2 to 5 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: About 43 to 47 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Gypsum, maximum content: 1 percent Available water capacity. High (about 10.5 inches) Interpretive groups Land capability (nonirrigated): 2e Typical profile 0 to 8 inches: Loam 8 to 35 inches: Clay loam 35 to 40 inches: Clay loam 40 to 60 inches: Loam . KC2— Lester - Kilkenny loams, 6 to 12 percent slopes, eroded Map Unit Setting Elevation: 700 to 1,600 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period. 155 to 200 days Map Unit Composition Lester, eroded, and similar soils: 60 percent Kilkenny, eroded, and similar soils: 40 percent Description of Lester, Eroded Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material. Till Properties and qualities Slope: 6 to 12 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) • Depth to water table: More than 80 inches 17 Custom Soil Resource Report • Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 25 percent Gypsum, maximum content. 1 percent Available water capacity High (about 10.5 inches) Interpretive groups Land capability (nonirrigated): 3e Typical profile 0 to 7 inches: Loam 7 to 38 inches: Clay loam 38 to 60 inches: Loam 60 to 80 inches: Loam Description of Kilkenny, Eroded Setting Landform: Moraines Landform position (two- dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: Till Properties and qualities Slope: 6 to 12 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained • Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 30 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Gypsum, maximum content: 1 percent Available water capacity. High (about 10.4 inches) Interpretive groups Land capability ( nonirrigated): 3e Typical profile 0 to 9 inches: Loam 9 to 53 inches: Clay loam 53 to 80 inches: Loam KD— Lester - Kilkenny loams, 12 to 18 percent slopes Map Unit Setting Elevation: 700 to 1,600 feet Mean annual precipitation: 23 to 35 inches . Mean annual air temperature: 43 to 50 degrees F Frost -free period. 155 to 200 days 18 Custom Soil Resource Report i s Map Unit Composition Lester and similar soils: 60 percent Kilkenny and similar soils: 40 percent Description of Lester Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: Till Properties and qualities Slope: 12 to 18 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 25 percent Gypsum, maximum content: 1 percent Available watercapacity: High (about 10.5 inches) Interpretive groups Land capability (nonirrigated): 4e Typical profile 0 to 7 inches: Loam 7 to 38 inches: Clay loam 38 to 60 inches: Loam 60 to 80 inches: Loam Description of Kilkenny Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: Till Properties and qualities Slope: 12 to 18 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 30 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 20 percent • Gypsum, maximum content: 1 percent Available watercapacity: High (about 10.4 inches) 19 Custom Soil Resource Report is Interpretive groups Land capability (nonirrigated): 4e Typical profile 0 to 9 inches: Loam 9 to 53 inches: Clay loam 53 to 80 inches: Loam KD2— Lester - Kilkenny loams, 12 to 18 percent slopes, eroded Map Unit Setting Elevation: 700 to 1,600 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period. 155 to 200 days Map Unit Composition Lester, eroded, and similar soils: 60 percent Kilkenny, eroded, and similar soils: 40 percent Description of Lester, Eroded • Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: Till Properties and qualities Slope: 12 to 18 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 25 percent Gypsum, maximum content: 1 percent Available watercapacity. High (about 10.5 inches) Interpretive groups Land capability (nonirrigated): 4e Typical profile 0 to 7 inches: Loam 7 to 38 inches: Clay loam 38 to 60 inches: Loam 60 to 80 inches: Loam 20 Custom Soil Resource Report • Description of Kilkenny, Eroded Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: Till Properties and qualities Slope: 12 to 18 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 30 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Gypsum, maximum content 1 percent Available water capacity: High (about 10.4 inches) Interpretive groups Land capability (nonirrigated): 4e Typical profile 0 to 9 inches: Loam • 9 to 53 inches: Clay loam 53 to 80 inches: Loam MP— Klossner and Muskego soils, ponded Map Unit Setting Elevation: 800 to 1,400 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Muskego, ponded, and similar soils: 50 percent Klossner, ponded, and similar soils: 50 percent Description of Klossner, Ponded Setting Landform: Marshes on moraines Down -slope shape: Concave Across -slope shape: Concave Parent material. Organic material over till • 21 Custom Soil Resource Report • Properties and qualities Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Drainage class: Very poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.20 to 2.00 in /hr) Depth to water table: About 0 inches Frequency of flooding: None Frequency of ponding: Frequent Calcium carbonate, maximum content.' 20 percent Gypsum, maximum content. 1 percent Available watercapacity: Very high (about 17.4 inches) Interpretive groups Land capability (nonirrigated): 8w Typical profile 0 to 26 inches: Muck 26 to 33 inches: Silt loam 33 to 40 inches: Loam 40 to 80 inches: Loam Description of Muskego, Ponded Setting Landform: Marshes on moraines Down -slope shape: Concave • Across -slope shape: Concave Parent material: Organic material over coprogenous earth Properties and qualities Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Drainage class: Very poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in /hr) Depth to water table: About 0 inches Frequency of flooding: None Frequency of ponding: Frequent Calcium carbonate, maximum content 80 percent Available water capacity: Very high (about 19.4 inches) Interpretive groups Land capability (nonirrigated): 8w Typical profile 0 to 9 inches: Muck 9 to 36 inches: Muck 36 to 60 inches: Coprogenous earth • 22 Custom Soil Resource Report • TB— Terril loam, 0 to 6 percent slopes Map Unit Setting Elevation: 1,100 to 1,450 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Terril and similar soils: 85 percent Description of Terril Setting Landform: Moraines, stream terraces Landform position (two - dimensional): Footslope Down -slope shape: Concave Across -slope shape: Linear Parent material. Colluvium over till Properties and qualities • Slope: 0 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: About 43 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 20 percent Gypsum, maximum content: 1 percent Available watercapacity. High (about 11.4 inches) Interpretive groups Land capability (nonirrigated): 2e Typical profile 0 to 27 inches: Loam 27 to 40 inches: Loam 40 to 63 inches: Loam 63 to 80 inches: Loam W —Water Map Unit Composition Water. 100 percent 23 Custom Soil Resource Report • YB—Rasset-Lester-Kil ken ny complex, 2 to 6 percent slopes Map Unit Setting Elevation: 700 to 1,700 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Rasset and similar soils: 55 percent Lester and similar soils: 25 percent Kilkenny and similar soils: 20 percent Description of Rasset Setting Landform: Moraines Landform position (two- dimensional): Backslope Down -slope shape: Linear Across -slope shape: Linear Parent material. Outwash Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Available water capacity: Moderate (about 6.1 inches) Interpretive groups Land capability (nonirrigated): 3e Typical profile 0 to 15 inches: Sandy loam 15 to 28 inches: Sandy loam 28 to 36 inches: Loamy sand 36 to 80 inches: Sand Description of Lester Setting Landform: Moraines Landform position (two- dimensional): Backslope Down -slope shape: Linear Across -slope shape: Linear Parent material: Till Properties and qualities Slope: 2 to 5 percent • Depth to restrictive feature: More than 80 inches 24 Custom Soil Resource Report • Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: About 43 to 47 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 20 percent Gypsum, maximum content: 1 percent Available watercapacity: High (about 10.5 inches) Interpretive groups Land capability (nonirrigated): 2e Typical profile 0 to 8 inches: Loam 8 to 35 inches: Clay loam 35 to 40 inches: Clay loam 40 to 60 inches: Loam Description of Kilkenny Setting Landform: Moraines Landform position (two - dimensional): Backslope Down -slope shape: Linear Across -slope shape: Linear Parent material: Till • Properties and qualities Slope: 2 to 6 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 20 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 20 percent Gypsum, maximum content: 1 percent Available water capacity: High (about 10.5 inches) Interpretive groups Land capability ( nonirrigated): 2e Typical profile 0 to 11 inches: Loam 11 to 35 inches: Clay loam 35 to 80 inches: Loam 25 Custom Soil Resource Report • YC— Rasset- Lester - Kilkenny complex, 6 to 12 percent slopes Map Unit Setting Elevation: 700 to 1,700 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period. 155 to 200 days Map Unit Composition Rasset and similar soils: 55 percent Lester and similar soils: 25 percent Kilkenny and similar soils: 20 percent Description of Rasset Setting Landform: Moraines Landform position (two- dimensional): Backslope Down -slope shape: Linear • Across -slope shape: Linear Parent material: Outwash Properties and qualities Slope: 6 to 12 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Available water capacity: Moderate (about 6.1 inches) Interpretive groups Land capability (nonirrigated): 4e Typical profile 0 to 15 inches: Sandy loam 15 to 28 inches: Sandy loam 28 to 36 inches: Loamy sand 36 to 80 inches: Sand Description of Lester Setting Landform: Moraines Landform position (two - dimensional): Backslope Down -slope shape: Linear • Across -slope shape: Linear 26 Custom Soil Resource Report • Parent material: Till Properties and qualities Slope: 6 to 12 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 25 percent Gypsum, maximum content: 1 percent Available water capacity: High (about 10.5 inches) Interpretive groups Land capability ( nonirrigated): 3e Typical profile 0 to 7 inches: Loam 7 to 38 inches: Clay loam 38 to 60 inches: Loam 60 to 80 inches: Loam Description of Kilkenny Setting Landform: Moraines • Landform position (two - dimensional): Backslope Down -slope shape: Linear Across -slope shape: Linear Parent material. Till Properties and qualities Slope: 6 to 12 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 30 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Gypsum, maximum content. 1 percent Available watercapacity. High (about 10.4 inches) Interpretive groups Land capability (nonirrigated): 3e Typical profile 0 to 9 inches: Loam 9 to 53 inches: Clay loam 53 to 80 inches: Loam 27 Custom Soil Resource Report • YD— Rasset- Lester - Kilkenny complex, 12 to 18 percent slopes Map Unit Setting Elevation: 700 to 1,700 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Rasset and similar soils: 55 percent Lester and similar soils: 25 percent Kilkenny and similar soils: 20 percent Description of Rasset Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material. Outwash Properties and qualities Slope: 12 to 18 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content. 20 percent Available water capacity. Moderate (about 6.1 inches) Interpretive groups Land capability (nonirrigated): 6e Typical profile 0 to 15 inches: Sandy loam 15 to 28 inches: Sandy loam 28 to 36 inches: Loamy sand 36 to 80 inches: Sand Description of Lester Setting Landform: Moraines Landform position (two- dimensional): Shoulder • Down -slope shape: Convex Across -slope shape: Convex 28 Custom Soil Resource Report Parent material: Till Properties and qualities Slope: 12 to 18 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 25 percent Gypsum, maximum content. 1 percent Available watercapacity.• High (about 10.5 inches) Interpretive groups Land capability (nonirrigated): 4e Typical profile 0 to 7 inches: Loam 7 to 38 inches: Clay loam 38 to 60 inches: Loam 60 to 80 inches: Loam Description of Kilkenny Setting Landform: Moraines Landform position (two- dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: Till Properties and qualities Slope: 12 to 18 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 30 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content.' 20 percent Gypsum, maximum content. 1 percent Available water capacity. High (about 10.4 inches) Interpretive groups Land capability (nonirrigated): 4e Typical profile 0 to 9 inches: Loam 9 to 53 inches: Clay loam 53 to 80 inches: Loam 29 Custom Soil Resource Report • YE— Rasset- Lester - Kilkenny complex, 18 to 25 percent slopes Map Unit Setting Elevation: 700 to 1,700 feet Mean annual precipitation: 23 to 35 inches Mean annual air temperature: 43 to 50 degrees F Frost -free period: 155 to 200 days Map Unit Composition Rasset and similar soils: 55 percent Lester and similar soils: 25 percent Kilkenny and similar soils: 20 percent Description of Rasset Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: 0utwash Properties and qualities Slope: 18 to 25 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): High (2.00 to 6.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Available water capacity. Moderate (about 6.1 inches) Interpretive groups Land capability (nonirrigated): 7e Typical profile 0 to 15 inches: Sandy loam 15 to 28 inches: Sandy loam 28 to 36 inches: Loamy sand 36 to 80 inches: Sand Description of Lester Setting Landform: Moraines Landform position (two- dimensional): Shoulder • Down -slope shape: Convex Across -slope shape: Convex 30 Custom Soil Resource Report Parent material: Till Properties and qualities Slope: 18 to 25 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 2.00 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 25 percent Gypsum, maximum content: 1 percent Available water capacity. High (about 10.4 inches) Interpretive groups Land capability (nonirrigated): 6e Typical profile 0 to 5 inches: Loam 5 to 34 inches: Clay loam 34 to 60 inches: Loam 60 to 80 inches: Loam Description of Kilkenny Setting Landform: Moraines Landform position (two - dimensional): Shoulder Down -slope shape: Convex Across -slope shape: Convex Parent material: Till Properties and qualities Slope: 18 to 25 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.60 in /hr) Depth to water table: About 30 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Gypsum, maximum content: 1 percent Available watercapacity. High (about 10.4 inches) Interpretive groups Land capability ( nonirrigated): 6e Typical profile 0 to 7 inches: Loam 7 to 31 inches: Clay loam 31 to 80 inches: Loam • 31 Custom Soil Resource Report is • • 32 Soil Information for All Uses Soil Reports The Soil Reports section includes various formatted tabular and narrative reports (tables) containing data for each selected soil map unit and each component of each unit. No aggregation of data has occurred as is done in reports in the Soil Properties and Qualities and Suitabilities and Limitations sections. The reports contain soil interpretive information as well as basic soil properties and qualities. A description of each report (table) is included. Soil Physical Properties This folder contains a collection of tabular reports that present soil physical properties. The reports (tables) include all selected map units and components for each map unit. Soil physical properties are measured or inferred from direct observations in the field or laboratory. Examples of soil physical properties include percent clay, organic matter, saturated hydraulic conductivity, available water capacity, and bulk density. Engineering Properties (MN) This table gives the engineering classifications and the range of engineering properties for the layers of each soil in the survey area. Hydrologic group is a group of soils having similar runoff potential under similar storm and cover conditions. Soil properties that influence runoff potential are those that influence the minimum rate of infiltration for a bare soil after prolonged wetting and when not frozen. These properties are depth to a seasonal high water table, saturated hydraulic conductivity after prolonged wetting, and depth to a layer with a very slow water transmission rate. Changes in soil properties caused by land management or climate changes also cause the hydrologic soil group to change. The influence of ground cover is treated independently. There are four hydrologic soil groups, A, B, C, and D, and three dual groups, A/D, B /D, and C /D. In the dual groups, the first letter is for drained areas and the second letter is for undrained areas. The four hydrologic soil groups are described in the following paragraphs: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. 33 Custom Soil Resource Report Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. Depth to the upper and lower boundaries of each layer is indicated. Texture is given in the standard terms used by the U.S. Department of Agriculture. These terms are defined according to percentages of sand, silt, and clay in the fraction of the soil that is less than 2 millimeters in diameter. "Loam," for example, is soil that is 7 to 27 percent clay, 28 to 50 percent silt, and less than 52 percent sand. If the content of particles coarser than sand is 15 percent or more, an appropriate modifier is added, for example, "gravelly." Classification of the soils is determined according to the Unified soil classification system (ASTM, 2005) and the system adopted by the American Association of State Highway and Transportation Officials ( AASHTO, 2004). • The Unified system classifies soils according to properties that affect their use as construction material. Soils are classified according to particle -size distribution of the fraction less than 3 inches in diameter and according to plasticity index, liquid limit, and organic matter content. Sandy and gravelly soils are identified as GW, GP, GM, GC, SW, SP, SM, and SC; silty and clayey soils as ML, CL, OL, MH, CH, and OH; and highly organic soils as PT. Soils exhibiting engineering properties of two groups can have a dual classification, for example, CL -ML. The AASHTO system classifies soils according to those properties that affect roadway construction and maintenance. In this system, the fraction of a mineral soil that is less than 3 inches in diameter is classified in one of seven groups from A -1 through A -7 on the basis of particle -size distribution, liquid limit, and plasticity index. Soils in group A -1 are coarse grained and low in content of fines (silt and clay). At the other extreme, soils in group A -7 are fine grained. Highly organic soils are classified in group A -8 on the basis of visual inspection. If laboratory data are available, the A -1, A -2, and A -7 groups are further classified as A -1 -a, A -1 -b, A -24, A -2 -5, A -2 -6, A -2 -7, A -7 -5, or A-7-6. As an additional refinement, the suitability of a soil as subgrade material can be indicated by a group index number. Group index numbers range from 0 for the best subgrade material to 20 or higher for the poorest. Rock fragments larger than 10 inches in diameter and 3 to 10 inches in diameter are indicated as a percentage of the total soil on a dry- weight basis. The percentages are estimates determined mainly by converting volume percentage in the field to weight percentage. Percentage (of soil particles) passing designated sieves is the percentage of the soil fraction less than 3 inches in diameter based on an ovendry weight. The sieves, numbers 4, 10, 40, and 200 (USA Standard Series), have openings of 4.76, 2.00, 34 Custom Soil Resource Report 0.420, and 0.074 millimeters, respectively. Estimates are based on laboratory tests of soils sampled in the survey area and in nearby areas and on estimates made in the field. Liquid limit and plasticity index (Atterberg limits) indicate the plasticity characteristics of a soil. The estimates are based on test data from the survey area or from nearby areas and on field examination. References: American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487 -00. �1 35 • V' O CL U 3 O O co E 0 U • 0 =X C O M 04 N N„ O O N O M N � N co O N C , N :O to O;i �- Z d Z N to to N N �— cr E a `i to Y `# Y to to °� °� ° v :3 to O O O U') to . N N O O O O N V M <M M N ': O O co M 7 M O N LD co O O O N �tn `t!S co OD 0 1- O O O O to a0 O aD to ti O to O in to O: to O O to O _..: r CD to :h CD a : M to to CD co to C ' >. 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O O o V O F N CO M M It N Q N Q �$ CD GO CO, CO N CO Or ¢ QF Q a¢ Q N U) J.:. ayi t0 m �U) C5 E u)c5 d cna �4 o C L (j) r c d o N c m m m —° cO Co dm N a c o: O o Q m m m > NT E E Em m W T y > U j2 �O O 00 T U : * � O U O O O7 O O O,': O O O U) (n J C co CO O ,r O D U) N L6 M W W 4, b0 M !� CO t i fM O , M W A O N CO M O Can) CO O >, w LO N° N IL a c N ro CL a��o 4� a m rn o_ V o E E E c o o O 4 C N U p< ca a CL . CD N It • O Q. N U 7 O 'o E 0 7 U M v x C1 O � a " N N1 N N M LD N a CL z z a z a z �i 5 ° N O O O J E a M M N N O O O O O O N "M Cl) C) M' LO Cl) O O co C N O to O O Lo" s Rf bi I�. to f�' U)' Ph` to 00 O co b 1 .0 E o ui N 0 0 b^ an 0 0 O to O M M N to3 O 0; lC')« F- f0 to r C m O O O O to tri to O: O: � to O 0 0 a0 o "0 0 th ! to 0 0 th 01: 0 M v to N - Q2..l+= 1 1�- 00 00 r C F� • 4 N 1 O O O o �� b i ' cs O O W O O_ O O_ O_ Oz O C04 00? O O_ co 07 m to th O O OZ 'O: lh O O Q) h I.- to to:; O O::' O': O W O w C. O O O O O O O O O;. ;O O; CD 0. O: O O; O O O O O O e a o CD 0 0) th n o ih' rn ,a> 0 .,q�y ui ! �N` 0 rn th rn to rn C C M C O O N N N N N im W r CD ..� & . - C. V'. : . ,. O O O D O O O:: O'- O O O F r N N CO N O M Q r Q �' W LO: LO:;, O N (D E5 `•E U ti U) m U U : U: U co J�� '�:J -J J '. J Z J o a ; U) CO CO U U U : CL C, y N t6 `� E Q o o C m u a� o' E ro '00 > > w o a E`mm �m o E E � T m E U U J UK; L d LO N M coo _ V' f . 0 0 0 r N M . o <� c u � x 61 co m: U to to us', O IL C N 10 X CL N N O O L m E N QQ N 0 C O x exr 3, Ill t '� N C a _ T 7 H N to N �,.,. - C �C N 0 ca Y W Y M v References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487 -00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep -water habitats of the United States. U.S. Fish and Wildlife Service FWS /OBS- 79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. is Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http: / /soils.usda.gov/ Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http: / /soils.usda.gov/ Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http: / /soils.usda.gov/ Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y -87 -1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http: / /soils.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. hftp: / /www.giti.nres.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430 -VI. http: / /soils.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the • Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. hftp://soils.usda.gov/ 44 Custom Soil Resource Report United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. • • 45 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix C — Construction General Permit and 0 0 EPA SWPPP Template, Version 1. 1, September 17, 2007 MM Pagel of 30 Permit No: MN R100001 GENERAL PERMIT AUTHORIZATION TO DISCHARGE STORMWATER ASSOCIATED WITH CONSTRUCTION ACTIVITY UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION ISSUANCE DATE: August 1, 2008 EXPIRATION DATE: August 1, 2013 In compliance with the provisions of the Clean Water Act, as amended, (33 U.S.C. 1251 et seq.), 40 CFR 122, 123, and 124, as amended, et seq.; Minn. Stat. chs. 115 and 116, as amended, Minn. R. chs. 7001 and 7090: This permit regulates the discharges of stormwater to the waters of the state of Minnesota associated with construction activity. This permit covers the stormwater- discharges identified in Part I.A. of this permit. The limitations on permit coverage are identified in Part I.B. of this permit. This permit requires the development and implementation of a Storm Water Pollution Prevention Plan (SWPPP). No person shall commence construction activity covered by Part I.A. until permit coverage under this permit is effective or, if applicable, until the Minnesota Pollution Control Agency (MPCA) has issued an individual National Pollutant Discharge Elimination System (NPDES) /State Disposal System (SDS) construction stormwater permit for the project. The SWPPP must be completed prior to submitting any permit application and prior to conducting any construction activity by any required Permittee. Unless notified by the MPCA to the contrary, applicants who submit a complete and accurate application (including permit fee) in accordance with the requirements of this permit are authorized to discharge stormwater from construction sites under the terms and conditions of this permit as described in Part II.B. Brad Moore Commissioner Minnesota Pollution Control Agency If you have questions on this permit, including the specific permit requirements, permit reporting or permit compliance status, please contact the appropriate MPCA offices. Minnesota Pollution Control Agency Municipal Division Construction Stormwater Program 520 Lafayette Road North St. Paul, MN 55155 -4194 Telephone: 651- 296 -6300 Toll free in MN 800 - 657 -3864 • wq- strm2-51 All boldfaced terms are defined in "Definitions, " Pages 23 through 26 TDD (for hearing and speech impaired only): (651)282 -5332 Made from over 50% recycled fiber including 20% post consumer waste Page 2 of 30 Permit No: MN R100001 TABLE OF CONTENTS Page • I. PERMIT COVERAGE AND LIMITATIONS .................................... ..............................3 A. Permit Coverage ............................................................................. ..............................3 B. Limitations of Coverage ................................................................. ..............................4 II. SUBMITTING THE APPLICATION .................................................. ..............................5 A. Prerequisite for Submitting a Permit Application .......................... ..............................5 B. Application and Duration of Coverage ........................................... ..............................5 C. Termination of Coverage ................................................................... ...........................7 III. STORMWATER DISCHARGE DESIGN REQUIREMENTS ......... ..............................8 A. Storm Water Pollution Prevention Plan .......................................... ..............................8 B . Temporary Sediment Basins .......................................................... .............................12 C. Permanent Stormwater Management System ................................ .............................12 D. Record Retention ........................................................................... ...................... .......16 IV. CONSTRUCTION ACTIVITY REQUIREMENTS .......................... .............................16 A. Storm Water Pollution Prevention Plan ......................................... .............................16 B. Erosion Prevention Practices ......................................................... .............................16 C. Sediment Control Practices .........................:.................................. .............................17 D. Dewatering and Basin Draining ..................................................... .............................18 E. Inspections and Maintenance ......................................................... .............................18 F. Pollution Prevention Management Measures ................................ .............................20 G. Final Stabilization .......................................................................... ................. ............20 V GENERAL PROVISIONS .................................................................... .............................21 A. Applicability Criteria ..................................................................... .............................21 B. Response ........................................................................................ .............................22 C. Prohibitions .................................................................................... .............................22 D. Transfer of Ownership or Control ................................................. .............................22 E. Civil and Criminal Liability ........................................................... .............................22 F. Severability .................................................................................... .............................22 G. NPDES /SDS Rule Standard Conditions ........................................ .............................22 H. Inspection and Entry ...................................................................... .............................22 APPENDIX .................................................................................................. .............................23 APPENDIXB - DEFINITIONS ..................................................................... .............................27 C: wq- strm2 -51 Page 3 of 30 Permit No: MN R100001 PART I. PERMIT COVERAGE AND LIMITATIONS • A. PERMIT COVERAGE 1. This permit is required for construction activity and small construction activity as defined in 40 CFR pt. 122.26(b)(1 4)(x) and (b)(15), respectively. 2. This permit authorizes, subject to the terms and conditions of this permit, the discharge of stormwater associated with construction activity and small construction activity. Construction activity includes clearing, grading and excavation, that disturbs land of equal to or greater than five (5) acres and includes the disturbance of less than five (5) acres of total land area that is a part of a larger common plan of development or sale if the larger common plan will ultimately disturb five (5) acres or more. Small construction activity includes clearing, grading and excavation, that disturbs land of equal to or greater than one (1) acre, and includes the disturbance of less than one (1) acre of total land area that is part of a larger common plan of development or sale if the larger common plan will ultimately disturb equal to or greater than one and less than five (5) acres. Small construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of the facility. 3. This permit covers all areas of the State of Minnesota. • 4. For Parts I.B through Appendix A of this pennit, all reference to construction activity includes both small construction activity and construction activity. 5. Coverage under this permit is not required when all runoff from construction activity or small construction activity is routed directly to and treated by a "treatment works ", as defined in Minn. Stat. § 115.0 1, subd. 21, that is operated under an individual NPDES /SDS permit with a Total Suspended Solids effluent limit for all treated runoff. 6. Previously Permitted Ongoing Projects. Permittee(s) of ongoing projects covered initially under the previous MPCA - issued NPDES /SDS Construction Stormwater General Permit (issuance date August 1, 2003) must continue coverage under this reissued permit. The Permittee(s) of those ongoing projects shall amend the SWPPP for the project to meet the requirements of this reissued permit no later than 18 months after the issuance date of this reissued permit if the termination -of- coverage requirements in Part II.C. will not be met within 18 months of the issuance date of this reissued permit. Any additional permanent treatment in Appendix A. Part C.2 is not required for previously permitted projects that have discharges to impaired waters or if the project is located between 2000 feet and one mile of, and discharges to, a special water. a. If the previously permitted ongoing project will meet the termination -of- coverage requirements in Part II.0 within 18 months of the issuance date of this reissued permit, the Permittee(s) shall comply with the 2003 construction general permit until the project is complete and a Notice of Termination consistent with Part II.C. of this reissued permit is submitted. b. If the previously permitted ongoing project will not be able to meet the terns and conditions • of this reissued permit, an individual permit will be required in accordance with Minn. R. ch. 7001. wq- strm2 -51 Page 4 of 30 Permit No: MN R100001 B. LIMITATIONS OF COVERAGE This p ermit does not cover the following activities: • — 1. Discharges or releases that are not stormwater except those non - stormwater discharges authorized under Part IV.D. 2. The placement of fill into waters of the state requiring local, state, or federal authorizations (such as U.S. Army Corps of Engineers Section 404 permits, Minnesota Department of Natural Resources Public Waters Work Permits or Local Governmental Unit Wetland Conservation Act replacement plans or determinations). 3. Stormwater discharges associated with industrial activity that originate from the site after construction activities have been completed and the site has undergone Final Stabilization. Post - construction, industrial stormwater discharges may need to be covered by a separate NPDES /SDS permit. 4. Non -point source agricultural and silvicultural discharges excluded from NPDES permit requirements under 40 CFR pt. 122.3(e). 5. Discharges to the waters identified below unless the requirements of Appendix A. are complied with: a. Discharges into outstanding resource value waters as listed in Minn. R. 7050.0180, subp. 3, 4, 5, 6 and 6a, except calcareous fens listed in Minn. R. 7050.0180, subp. 6b. • b. Discharges into Trout waters as listed in Minn. R. 6264.0050, subp. 2 and 4. c. Discharges into wetlands as defined in Minn. R. 7050.0130, item F. d. Discharges from projects that have not met applicable Environmental Review requirements under state or federal laws. e. Discharges that adversely impact or contribute to adverse impacts on a state or federal listed endangered or threatened species or adversely modify a designated critical habitat. f. Discharges which adversely affect properties listed or eligible for listing in the National Register of Historic Places or affecting known or discovered archeological sites. 6. Discharges to calcareous fens listed in Minn. R. 7050.0180, subp. 6b, without a letter of approval from the Minnesota Department of Natural Resources (DNR). If the DNR does not respond to the permittee's request for approval within 30 calendar days, the application can be submitted. 7. Discharges to waters identified as impaired pursuant to section 303 (d) of the federal Clean Water Act (33 U.S.C. § 303(d)) where the identified pollutant(s) or stressor(s) are phosphorus (nutrient eutrophication biological indicators), turbidity, dissolved oxygen, or biotic impairment (fish bioassessment, aquatic plant bioassessment and aquatic macroinvertebrate bioassessment), and with or without a U.S. Environmental Protection Agency (USEPA) approved Total • Maximum Daily Load (TMDL) for any of these identified pollutant(s) or stressor(s), unless the applicable requirements of Part III.A.9 are met. wq- strm2 -51 Page 5 of 30 Permit No: MN R100001 • PART II. SUBMITTING THE APPLICATION A. PREREQUISITE FOR SUBMITTING A PERMIT APPLICATION The owner must develop a SWPPP in accordance with Part III (Storm Water Discharge Design Requirements) of this permit. The plans are not to be submitted to the MPCA (unless the project size is 50 acres or more and will discharge to certain waters as described in Part H.B. Lb.) but are to be retained by the owner in accordance with Part III.D (Record Retention). The applicants' failure to complete the SWPPP prior to submitting the application will result in the application being returned and the stormwater discharges associated with construction activity will not be authorized by this permit. B. APPLICATION AND DURATION OF COVERAGE 1. Application Required. a. The owner and operator shall submit a complete and accurate application form (or a photocopy thereof) with the appropriate fee for project size (see application form) to the MPCA for each project which disturbs one (1) or more acres of land. The owner and operator of a common plan of development or sale that will ultimately disturb one (1) or more acres must submit a complete and accurate application to the MPCA. b. For certain projects or common plans of development or sale disturbing 50 acres or more, • the application must be submitted at least 30 days before the start of construction activity. This requirement pertains to projects that have a discharge point on the project that is within one mile of, and flows to, a special water listed in Appendix A, Part B. or waters listed as impaired under section 303(d) of the federal Clean Water Act (see the MPCA's web site) where the identified pollutant(s) or stressor(s) are phosphorus (nutrient eutrophication biological indicators), turbidity, dissolved oxygen, or biotic impairment (fish bioassessment, aquatic plant bioassessment and aquatic macroinvertebrate bioassessment). Applicants must submit a complete and accurate application form and SWPPP including all calculations for the Permanent Stormwater Management System (see Part III.A — Q. The Owner and Operator are Permittee(s). The owner who signs the application is a Permittee and is responsible for compliance with all terms and conditions of this permit. The operator (usually the general contractor) who signs the application is a Permittee for Parts H.B., Part H.C., Part IV. and applicable construction activity requirements found in Appendix A. Part C. of this permit and is jointly responsible with the owner for compliance with those portions of the permit. 3. Permit Coverage. The commencement of any construction activity (e.g., land disturbing activities) covered under Part I.A. of this permit is prohibited until permit coverage under this permit is effective or, if applicable, until the MPCA has issued an individual NPDES /SDS construction stormwater permit for the project. a. Except as provided in subp. 3.b., 3.c. and 3.d below, permit coverage will become effective seven (7) calendar days after the postmarked date of the completed application form. b. For projects disturbing 50 acres or more, that have a discharge point on the project that is wq- strm2 -51 Page 6 of 30 Permit No: MN R100001 within one mile of, and flows to, a special water listed in Appendix A, Part B. or waters listed as impaired under section 303(d) of the federal Clean Water Act, the applicants must • submit a complete application and SWPPP to the MPCA at least thirty (30) calendar days prior to the commencement of construction activity. MPCA staff will review the SWPPP submitted with the complete application and permit coverage will become effective 30 calendar days after the postmarked date or MPCA date stamp (whichever is first) of the complete application or on the effective date identified within a permit coverage letter issued by the MPCA. For incomplete applications (e.g. lack of fees or signature) or incomplete SWPPPs (e.g. missing calculations, Best Management Practice (BMP) specifications or timing of BMP installation narrative), the 30 calendar day review period begins on the date that all required information is submitted. c. For proposals to use Alternative Method(s) for the Permanent Stormwater Management System under Part III.C.5, the applicants must submit a complete application and SWPPP, including the Alternative Method documentation under Part III.C.5, to MPCA for review and approval at least 90 days prior to the proposed starting date of construction activity. The MPCA will notify the applicant within the 90 -day period, in writing, whether the alternative method is approved or not approved and, if applicable, the basis for denial. ii. The applicant may re- submit the alternative method after addressing the MPCA's basis for denial. The MPCA will respond within 30 days. iii. Permit coverage will become effective upon receipt of an alternative treatment method approval letter from MPCA. Any construction activity on the project is not • covered under this permit until receiving the alternative treatment approval letter. d. Except as provided in parts 3.b. and 3.c., for, projects that apply online, permit coverage will become effective two (2) calendar days after the online application process is complete. 4. Coverage Letter. For projects under subpart 3.a. of this part, the Permittee(s) will receive a permit letter and certificate acknowledging permit coverage, usually within 30 days of the postmarked date of the complete application. 5. Change of Coverage. For construction projects where the owner or operator changes, (e.g., an original developer sells portions of the property to various homebuilders or sells the entire site to a new owner): a. The original/current owner shall provide a copy of the complete notice of tennination/pennit modification form (as required in Part II.C.2.b) to the new owner. The original /current owner shall provide a SWPPP to the new owner and operator that specifically addresses the remaining construction activity. Note: The notice of termination/permit modification form replaces the subdivision registration, permit transfer /modification and notice of termination forms. b. The new owner or operator shall submit a complete and signed pen modification portion (permit modifications include subdivision registration or permit transfer) of the notice of termination/permit modification form to the MPCA prior to commencing construction activity on site or in no case later than seven (7) days after taking ownership of the property. The new Permittee(s) are responsible for compliance with all terms and conditions of this permit as described in Part II.B.2. 0 c. If an operator or general contractor has completed their portion of work on the site, is no wq- strm2 -51 Page 7 of' 0 Permit No: MN R100001 longer in operational control of the project, and all contractual obligations between the is owner and operator or general contractor relating to compliance with the terms and conditions of this permit have been met, the operator or general contractor, may transfer permit coverage back to the owner or to a new operator using the notice of termination/permit modification form. A signature from both the owner and operator is required. C. TERMINATION OF COVERAGE 1. Permittee(s) wishing to terminate coverage under this permit must submit a Notice of Termination (NOT) to the MPCA. Compliance with this permit is required until a NOT is submitted. The Permittee(s) coverage under this permit terminates at midnight on the postmark date of the NOT, or on the date an online NOT is submitted to the MPCA. 2. Termination of coverage scenarios: a. Termination of coverage for the entire project. i. All Permittee(s) must submit a NOT within 30 days after Final Stabilization (see Part N.G.) has been completed on all portions of the site for which the Permittee is responsible and all construction activity has been completed. If the site includes permanent stormwater management systems, the requirements for final cleanout/maintenance must be performed as required in Final Stabilization, Part IV.G.2. • ii. Permittee(s) must submit a NOT within 30 days after selling the entire site including roads and stormwater infrastructure, and coverage is transferred to another owner as described in Part II.B.5. b. Termination of coverage for a portion of the entire project. All Permittee(s) must submit a NOT within seven (7) days after selling or otherwise legally transferring portions of the site to another party and they are no longer the owner or operator. The portions of the site being sold to another parry must be in compliance with the permit (e.g. all temporary erosion protection and sediment control measures must be in place). The form must include signatures from the original Permittee(s) and contact information for the new owner of the property. c. Termination of coverage obtained using a subdivision registration. If permit coverage was obtained using the subdivision registration process, Permittee(s) are required to submit a NOT within 30 days after achieving Final Stabilization (see Part IV.G.). 3. Permittee(s) that use an alternative method for the Permanent Stormwater Management System as described in Part III.C.5, are prohibited from terminating this permit until Final Stabilization has been achieved on site and either: a. The two years of monitoring data required in Part III.C.5 has been submitted to the MPCA and the MPCA has determined that the required treatment has been achieved. The Permittee wq- strm2 -51 Page 8 of 30 Permit No: MN R100001 will be notified in writing within 30 days after the monitoring data has been submitted. If the Permittee has not heard from the MPCA within 30 days after submitting the required data, • the Permittee can submit a NOT. b. The Permittee can submit a NOT, even if the timeframe is less than two years, if the MPCA determines that the alternative method is achieving the required treatment. During the monitoring and evaluation of the alternative method, the Permittee is not responsible for other permit requirements that have been transferred as described in Part II.13.5. PART III. STORMWATER DISCHARGE DESIGN REQUIREMENTS A. STORM WATER POLLUTION PREVENTION PLAN The owner must develop a Storm Water Pollution Prevention Plan (SWPPP). The SWPPP shall be completed prior to submitting any pen application and prior to conducting any construction activity by any required Permittee(s). The plan must be a combination of narrative, plan sheets and if appropriate standard detail sheets that address the foreseeable conditions, at any stage in the construction or post construction activities. The plan must include a description of the nature of the construction activity. The plan must address the potential for discharge of sediment and/or other potential pollutants from the site. For stormwater discharges from construction activity where the owner or operator changes, the new owner or operator can implement the original SWPPP created for the project, modify the original SWPPP, or develop and implement their own SWPPP. Permittee(s) shall ensure either directly or through coordination with other Permittee(s) that their SWPPP meets all terns and conditions of this permit and that their activities do not render another party's erosion prevention and sediment control BMPs ineffective. • As part of the SWPPP the owner must identify a person knowledgeable and experienced in the application of erosion prevention and sediment control BMPs who will oversee the implementation of the SWPPP, and the installation, inspection and maintenance of the erosion prevention and sediment control BMPs before and during construction. The owner must identify who will have the responsibility for long term operation and maintenance of the Permanent Stormwater Management System (see Part III.C.). The owner shall develop a chain of responsibility with all operators on the site to ensure that the SWPPP will be implemented and stay in effect until the construction project is complete, the entire site has undergone Final Stabilization, and a NOT has been submitted to the MPCA. 2. Training requirements. Permittee(s) must comply with these training requirements no later than 18 months after the issuance date of this permit. The Permittee(s) shall ensure the individuals identified in this part have been trained in accordance with this Permit's training requirements. The Permittee(s) shall ensure the training is recorded in or with the SWPPP before the start of construction or as soon as the personnel for the project have been determined. a. Who must be trained: i. Individual(s) preparing the SWPPP for the project. ii. Individual(s) overseeing implementation of, revising, and amending the SWPPP and individual(s) performing inspections as required in Part W.E. One of these individual(s) must be available for an on site inspection within 72 hours upon request by the MPCA. iii. Individual(s) performing or supervising the installation, maintenance and repair of BMPs. At least one individual on a project must be trained in these job duties. wq- strm2-51 Page 9 of 30 Permit No: MN R100001 • b. Training content. The content and extent of training must be commensurate with the individual's job duties and responsibilities with regard to activities covered under this permit for the project. At least one individual present on the permitted project site (or available to the project site in 72 hours) must be trained in the job duties described in Part EI.A.2.a.ii and Part III.A.2.a.iii. c. Training documentation. i. Documentation must be in or with the SWPPP or be available within 72 hours upon request. ii. Naives of the personnel associated with this project that are required to be trained per Part III.A.2.a. of this permit. iii. Dates of training and name of instructor(s) and entity providing training. iv. Content of training course or workshop (including number of hours of training). d. The Permittee(s) shall ensure that the individuals are trained by local, state, federal agencies, professional organizations, or other entities with expertise in erosion prevention, sediment control or permanent stormwater management such as the University of Minnesota, Minnesota Erosion Control Association, Soil and Water Conservation Districts or the MPCA. • 3. The SWPPP must incorporate the requirements of Part III ( Stormwater Discharge Design Requirements), Part IV (Construction Activity Requirements) and Appendix A for the project. A narrative describing the timing for installation of all erosion prevention and sediment control BMWs required in Part III, Part IV and Appendix A must also be included in the SWPPP. 4. The SWPPP requirements must be incorporated into the project's final plans and specifications and/or project documentation, as appropriate, and must include: a. Location and type of all temporary and permanent erosion prevention and sediment control BMPs along with procedures to be used to establish additional temporary BMPs as necessary for the site conditions during construction. Standard plates and/or specifications for the BMPs used on the project must be included in the final plans and specifications for the project. b. Estimated preliminary quantities tabulation anticipated at the start of the project for the life of the project must be included for all erosion prevention and sediment control BMPs in the SWPPP. c. The SWPPP must include the number of acres of impervious surface for both pre- and post - construction. d. A site map with existing and final grades, including dividing lines and direction of flow for • all pre -and post- construction stormwater runoff drainage areas located within the project limits. The site map must also include impervious surfaces and soil types. wq- strm2 -51 Page 10 of' 0 Permit No: MN R100001 e. Locations of areas not to be disturbed. Buffer zones, if required in Appendix A. Part C.3, must be described and identified on plan sheets or project maps in the SWPPP. • f. Location of areas where construction will be phased to minimize duration of exposed soil areas. g. All surface waters and existing wetlands, which can be identified on maps such as United States Geological Survey 7.5 minute quadrangle maps or equivalent maps within one mile from the project boundaries, which will receive stormwater runoff from the construction site, during or after construction. Where surface waters receiving runoff associated with construction activity will not fit on the plan sheet, they must be identified with an arrow, indicating both direction and distance to the surface water. The SWPPP must identify if the surface water is a special or impaired water. h. Methods to be used for Final Stabilization of all exposed soil areas. 5. The Permittee(s) must amend the SWPPP as necessary to include additional requirements, such as additional or modified BMPs, designed to correct problems identified or address situations whenever: a. There is a change in design, construction, operation, maintenance, weather or seasonal conditions that has a significant effect on the discharge of pollutants to surface waters or underground waters; b. Inspections or investigations by site operators, local, state or federal officials indicate the • SWPPP is not effective in eliminating or significantly minimizing the discharge of pollutants to surface waters or underground waters or that the discharges are causing water quality standard exceedances (e.g. nuisance conditions as defined in Minn. R. 7050.0210, subp. 2); or c. The SWPPP is not achieving the general objectives of minimizing pollutants in stormwater discharges associated with construction activity, or the SWPPP is not consistent with the terms and conditions of this permit. d. At any time after permit coverage is effective, the MPCA may determine that the project's stormwater discharges may cause, have reasonable potential to cause, or contribute to non - attainment of any applicable water quality standard, or that the SWPPP does not incorporate the applicable requirements in Part III.A.9, Discharges to Impaired Waters and TMDLs. If MPCA makes such determination(s) or any of the determinations in Parts III.A.5.a. -.c., MPCA will notify the Permittee(s) in writing. In response, the Permittee(s) must develop a supplemental BMP action plan or appropriate SWPPP amendments describing SWPPP modifications to address the identified concerns and submit information requested by MPCA, which may include an individual permit application. If MPCA's written notification requires a response, failure to respond within the specified timeframe constitutes a permit violation. The SWPPP must factor in any findings of and include any stormwater mitigation measures required as the result of any environmental, archeological or other required local, state or federal • review conducted for the project. For the purposes of this permit provision, mitigation measures mean avoiding, minimizing, rectifying (e.g., repairing, rehabilitating, restoring), reducing, wq- strm2 -51 Page 11 of 30 Permit No: MN R100001 eliminating or compensating for impacts related to: (1) stormwater discharges associated with • the project's construction activity; and (2) erosion prevention, sediment control and the Permanent Stormwater Management System for the project. The SWPPP must provide additional measures as necessary to assure compliance with surface and ground water standards in Minn. R. chs. 7050 and 7060 in karst areas and to ensure protection of drinking water supply management areas (see Minn. R. 4725.4450). 8. If runoff from the site discharges to a calcareous fen listed in Minn. R. 7050.0180, subp. 6b, and a letter of approval from the Minnesota Department of Natural Resources (DNR) has been obtained, this must be documented in the SWPPP for the project. Any additional stormwater mitigation measures contained in the DNR approval letter must be incorporated into the SWPPP for the project. If the DNR does not respond to the request for a letter of approval within 30 calendar days, this must be documented in the SWPPP for the project. 9. Discharges to Impaired Waters and TMDLs This part describes the requirements for projects that have a discharge point on the project that is within one mile of, and flows to, an impaired water that is identified on the most recent USEPA approved list of impaired waters. Impaired waters for the purposes of this permit are those waters identified as impaired pursuant to section 303(d) of the Clean Water Act where the identified pollutant(s) or stressor(s) are phosphorus (nutrient eutrophication biological indicators), turbidity, dissolved oxygen, or biotic impairment (fish bioassessment, aquatic plant bioassessment and aquatic macroinvertebrate bioassessment), and a TMDL is either required, or • complete and USEPA approved, for any of the identified pollutant(s) or stressor(s). a. Requirements for Discharges to Impaired Waters For projects that have a discharge point on the project that is within one mile of, and flows to, an impaired water, the Permittee(s) must identify the impaired water(s) in the SWPPP, and whether there is a USEPA approved TMDL for the pollutant(s) or stressor(s) identified in this part. Unless otherwise notified by the MPCA in writing, the Permittee(s) identification of impaired waters must be based on the most recent USEPA approved section 303(d) Clean Water Act list of impaired waters and USEPA approved TMDLs at the time a complete permit application is submitted. The Permittee(s) identification must include those TMDLs applicable to the project's stormwater discharge that were approved at any time prior to permit application submittal and are still in effect. b. Impaired Water Without an Approved TMDL or With an Approved TMDL and No Waste Load Allocation If runoff from the site discharges to an impaired water, and a TMDL has not been approved by USEPA or there is a USEPA approved TMDL that does not establish a Waste Load Allocation (WLA) for construction stormwater, the Permittee(s) must incorporate into their SWPPP, and implement, the additional BMPs in Appendix A, Part C.1 and C.2. c. Impaired Water With an Approved TMDL and WLA • If runoff from the site discharges to an impaired water for which there is a USEPA approved TMDL that establishes a WLA for construction stormwater, and the TMDL does not wq- strm2 -51 Page 12 of' 0 Permit No: MN R100001 identify any specific implementation activities that would apply to the site discharges, the Permittee(s) must incorporate into their SWPPP, and implement, the additional BMPs in • Appendix A, Part C.1 and C.2. If the TMDL identifies specific implementation activities regarding construction stormwater that would apply to the site discharges, the Permittee(s) must include the following in the SWPPP: i. Identify the receiving water, the areas of the site discharging to it, and the pollutant(s) identified in the TMDL; and ii. BMPs identified in the TMDL and any other specific construction stormwater related implementation activities identified in the TMDL. B. TEMPORARY SEDIMENT BASINS Where ten (10) or more acres of disturbed soil drain to a common location, a temporary (or permanent) sediment basin must be provided prior to the runoff leaving the construction site or entering surface waters. The Permittee is encouraged, but not required, to install temporary sediment basins where appropriate in areas with steep slopes or highly erodible soils even if less than ten (10) acres drains to one area. The basins must be designed and constructed according to the following requirements: 1. The basins must provide storage below the outlet pipe for a calculated volume of runoff from a two (2) year, 24 hour storm from each acre drained to the basin, except that in no case shall the basin provide less than 1800 cubic feet of storage below the outlet pipe from each acre drained to the basin. is 2. Where no such calculation has been performed, a temporary (or permanent) sediment basin providing 3,600 cubic feet of storage below the outlet pipe per acre drained to the basin, shall be provided where attainable until permanent cover is established for the entire drainage area of the temporary basin. Temporary basin outlets must be designed to prevent short- circuiting and the discharge of floating debris. The basin must be designed with the ability to allow complete basin drawdown (e.g., perforated riser pipe wrapped with filter fabric and covered with crushed gravel, pumps or other means, see Part N.D.) for maintenance activities, and provide a stabilized emergency overflow to prevent failure of pond integrity. Energy dissipation must be provided for the basin outlet (see Part W.B.4). 4. The temporary (or permanent) basins must be constructed and made operational concurrent with the start of soil disturbance that is upgradient of the area and contributes runoff to the pond. 5. Where the temporary sediment basin is not attainable due to site limitations, equivalent sediment controls such as smaller sediment basins, and/or sediment traps, silt fences, vegetative buffer strips, or any appropriate combination of measures are required for all down slope boundaries of the construction area and for those side slope boundaries deemed appropriate as dictated by individual site conditions. In determining whether installing a sediment basin is attainable, the Permittee must consider public safety and may consider factors such as site soils, slope, and available area on site. This determination must be documented in the SWPPP. • C. PERMANENT STORMWATER MANAGEMENT SYSTEM wq- stmi2 -51 Page 13 of 30 Permit No: MN R100001 • All stormwater must be discharged in a manner that does not cause nuisance conditions, erosion in receiving channels or on downslope properties, or inundation in wetlands causing a significant adverse impact to the wetlands. Where a project's ultimate development replaces vegetation and/or other pervious surfaces with one or more acres of cumulative impervious surface, a water quality volume of /z inch of runoff from the new impervious surfaces created by the project must be treated by one of the methods outlined in Part III.C.1 through Part EELC.5 prior to the runoff leaving the construction site or entering surface waters (excluding man made drainage systems that convey stormwater to a constructed permanent stormwater management facility designed to treat the water quality volume from the project). For those areas of a project where there is no feasible way to meet the treatment requirement for the water quality volume, other treatment such as grassed swales, smaller ponds or grit chambers is required prior to discharge to surface waters. A cumulative maximum of three (3) acres or 1% of project size whichever is larger can be treated in this manner. Where the proximity to bedrock precludes the installation of any of the permanent stormwater management practices outlined in Part III.C., other treatment, such as grassed swales, smaller ponds, or grit chambers, is required prior to discharge to surface waters. For work on linear projects where the lack of right of way precludes the installation of any of the permanent stormwater management practices outlined in Part III.C., other treatment such as grassed swales, smaller ponds, or grit chambers, is required prior to discharge to surface waters. A • reasonable attempt must be made to obtain right of way during the project planning process. Documentation of these attempts must be in the SWPPP for the project or made available upon request within 72 hours. 1. Wet Sedimentation Basin a. The basin must have a permanent volume of 1800 cubic feet of storage below the outlet pipe for each acre that drains to the basin. The basin's permanent volume must reach a minimum depth of at least 3 feet and must have no depth greater than 10 feet. The basin must be configured such that scour or resuspension of solids is minimized. b. The basin's water quality volume is calculated as '/2 inch of runoff from the new impervious surfaces created by the project. c. Basin outlets shall be designed such that the water quality volume is discharged at no more than 5.66 cubic feet per second (cfs) per acre of surface area of the pond. d. Basin outlets must be designed to prevent short- circuiting and the discharge of floating debris. Basin outlets must have energy dissipation. e. The basin must provide a stabilized emergency overflow to accommodate storm events in excess of the basin's hydraulic design. f. Adequate maintenance access must be provided (typically 8 ft. wide) along with a • maintenance plan identifying whom will be performing future maintenance of the basin. 2. Infiltration/Filtration wq- strm2 -51 Page 14 of' 0 Permit No: MN R100001 Infiltration/Filtration options include but are not limited to: infiltration basins, infiltration • trenches, rainwater gardens, sand filters, organic filters, bioretention areas, enhanced swales, dry storage ponds with underdrain discharge, off -line retention areas, and natural depressions. Infiltration must be used only as appropriate to the site and land uses. Settleable solids, floating materials, oils and grease should be removed from the runoff to the maximum extent practicable before nmoff enters the infiltration/filtration system. Filtration systems must have a reasonable chance of achieving approximately 80% removal of total suspended solids. The Permittee(s) must evaluate the impact of constructing an infiltration practice on existing hydrologic features (e.g., existing wetlands) and try to maintain pre- existing conditions (e.g., do not breach a perched water table which is supporting a wetland). For a discussion of potential stormwater hotspots, ground water warnings, design measures, maintenance considerations or other retention, detention, and treatment devices, see the Minnesota Stormwater Manual or MPCA's Protecting Water Quality in Urban Areas found on the MPCA's web -site. a. Infiltration systems should not be excavated to final grade until the contributing drainage area has been constructed and fully stabilized. b. During construction of an infiltration system, rigorous erosion prevention and sediment controls (e.g., diversion berms) should be used to keep sediment and runoff completely away from the infiltration area. The area must be staked off and marked so that heavy construction equipment will not compact the soil in the proposed infiltration area. c. To prevent clogging of the infiltration or filtration system, a pretreatment device such as a vegetated filter strip, small sedimentation basin, or water quality inlet (e.g., grit chamber) must be used to settle particulates before the storm water discharges into the infiltration or • filtration system. d. Infiltration or filtration systems shall be sufficient to infiltrate or filter a water quality volume of 1 /2 inch of runoff from the new impervious surfaces created by the project. e. The water quality volume shall discharge through the soil surface or filter media in 48 hours or less. Additional flows that cannot be infiltrated or filtered in 48 hours should be routed to bypass the system through a stabilized discharge point. A way to visually verify that the system is operating as designed must be provided. f. Appropriate on -site testing consistent with the recommendations found in the Minnesota Stormwater Manual shall be conducted to ensure a minimum of 3 feet of separation from the seasonally saturated soils (or from bedrock) and the bottom of the proposed infiltration system. Calculations or computer model results that demonstrate the design adequacy of the infiltration system must be included as part of the SWPPP. g. Adequate maintenance access must be provided (typically 8 ft. wide) along with a maintenance plan identifying whom will be performing future maintenance of the infiltration or filtration system. h. Use of designed infiltration systems receiving runoff from vehicle fueling and maintenance areas is prohibited. 3. Regional Ponds • Regional ponds can be used provided that they are constructed ponds, not a natural wetland or wq- strm2 -51 Page 15 of 30 Permit No: MN R100001 water body, (wetlands used as regional ponds must be mitigated for, see Appendix A) and • designed in accordance with this permit's design requirements (see Part Ell. C.1) for all water from impervious surfaces that reach the pond. Permittee(s) shall not construct regional ponds in wetlands, regardless of their condition, quality or designation by local plans, unless the mitigative sequence in Appendix A. D. of this permit has been completed. There must be no significant degradation of the waterways between the project and the regional pond. The owner must obtain written authorization from the applicable local governmental unit (LGU) or private entity that owns and maintains the regional pond. The LGU's or private entity's written authorization must identify that the regional pond will discharge the water quality volume (' /2 inch of runoff from the impervious watershed area) at no more than 5.66 cfs per acre of surface area of the pond. The owner must include the LGU's or private entities' written authorization in the SWPPP. The LGU's or private entity's written authorization must be obtained before the owner finalizes the SWPPP and before any application for this permit is made to the MPCA. 4. Combination of Practices A combination of practices, including those required by a LGU, which meet the requirements of Part III.C.1, 2 and 3 respectively, (i.e., wet sedimentation basins, infiltration/filtration, and regional ponds) may be used such that the water quality volume of 1 /2 inch of runoff from the new impervious surfaces created by the project is accounted for in the owner's pennanent storm water management system (e.g., 1 /4 inch infiltrated and 1 /4 inch treated through a wet sedimentation basin). If any combination of these practices is used, the SWPPP must contain documentation (e.g., LGU or private entity's authorization, infiltration computer model results or calculations, etc.) identifying the volume that each practice addresses. • 5. Alternative Method Where an alternative, innovative treatment system is proposed and demonstrated by calculation, design or other independent methods to achieve approximately 80% removal of total suspended solids on an annual average basis, the Commissioner will approve the method if the process outlined in Part II.B.3.c. is completed, and the following information is submitted: a. All calculations, drainage areas, plans, and specifications for the proposed alternative method and a graphic representation of the area to be served by the method. These items must be included in the SWPPP and submitted to the MPCA at least 90 days prior to the proposed starting date of the construction activity. b. A two (2) year monitoring plan to sample runoff from the proposed method. The plan must include a discussion of the methods used to collect samples, location where samples will be taken (upstream and downstream of the proposed method), frequency of samples (minimum of six runoff events sampled), identify lab used to analyze the samples and quality assurance and quality control methods to be used. The plan must include a schedule for submitting the monitoring data annually. c. A mitigation plan that addresses how the water quality volume will be treated in the event that the monitoring data shows the proposed alternative treatment method does not function as designed. d. The alternative method must achieve approximately 80% removal of total suspended solids on an average annual basis for the conditions expected at the site. The design must also consider public safety, health and water quality concerns. Proprietary information on wq- strm2 -51 Page 16 of 30 Pennit No: MN R100001 effectiveness will not be considered for alternative treatment method review and approval. No construction activity on the project is covered under this permit until the applicant receives an alternative treatment approval letter from the MPCA as described in Part II.13.3.c. D. RECORD RETENTION The SWPPP (original or copies) including, all changes to it, and inspections and maintenance records must be kept at the site during construction by the Permittee who has operational control of that portion of the site. The SWPPP can be kept in either the field office or in an on site vehicle during normal working hours. All owner(s) must keep the SWPPP, along with the following additional records, on file for three (3) years after submittal of the NOT as outlined in Part H.C. This does not include any records after submittal of the NOT. 1. Any other permits required for the project; 2. Records of all inspection and maintenance conducted during construction (see Part N.E. Inspections and Maintenance); 3. All permanent operation and maintenance agreements that have been implemented, including all right of way, contracts, covenants and other binding requirements regarding perpetual maintenance; and 4. All required calculations for design of the temporary and Pennanent Stormwater Management • Systems. PART IV. CONSTRUCTION ACTIVITY REQUIREMENTS A. STORM WATER POLLUTION PREVENTION PLAN The Permittee(s) must implement the SWPPP and the requirements of this part. The BMPs identified in the SWPPP and in this permit must be selected, installed, and maintained in an appropriate and functional manner that is in accordance with relevant manufacturer specifications and accepted engineering practices. B. EROSION PREVENTION PRACTICES 1. The Permittee(s) must plan for and implement appropriate construction phasing, vegetative buffer strips, horizontal slope grading, and other construction practices that minimize erosion, so that the inspection and maintenance requirements of Part N.E. are complied with. The location of areas not to be disturbed must be delineated (e.g. with flags, stakes, signs, silt fence etc.) on the development site before work begins. 2. All exposed soil areas must be stabilized as soon as possible to limit soil erosion but in no case later than 14 days after the construction activity in that portion of the site has temporarily or permanently ceased. Temporary stockpiles without significant silt, clay or organic components (e.g., clean aggregate stockpiles, demolition concrete stockpiles, sand stockpiles) and the • constructed base components of roads, parking lots and similar surfaces are exempt from this requirement but must comply with Part W.C.5. wq- strm2 -51 Page 17 of' 0 Permit No: MN R100001 • 3. The normal wetted perimeter of any temporary or permanent drainage ditch or Swale that drains water from any portion of the construction site, or diverts water around the site, must be stabilized within 200 lineal feet from the property edge, or from the point of discharge into any surface water. Stabilization of the last 200 lineal feet must be completed within 24 hours after connecting to a surface water. Stabilization of the remaining portions of any temporary or permanent ditches or swales must be complete within 14 days after connecting to a surface water and construction in that portion of the ditch has temporarily or permanently ceased. Temporary or permanent ditches or swales that are being used as a sediment containment system (with properly designed rock ditch checks, bio rolls, silt dikes etc.) do not need to be stabilized. These areas must be stabilized within 24 hours after no longer being used as a sediment containment system. 4. Pipe outlets must be provided with temporary or permanent energy dissipation within 24 hours after connection to a surface water. C. SEDIMENT CONTROL PRACTICES 1. Sediment control practices must minimize sediment from entering surface waters, including curb and gutter systems and storm sewer inlets. a. Temporary or permanent drainage ditches and sediment basins that are designed as part of a is sediment containment system (e.g., ditches with rock check dams) require sediment control practices only as appropriate for site conditions. b. If the down gradient treatment system is overloaded, additional upgradient sediment control practices or redundant BMPs must be installed to eliminate the overloading, and the SWPPP must be amended to identify these additional practices as required in Part III.A.4, a. through C. c. In order to maintain sheet flow and minimize rills and/or gullies, there shall be no unbroken slope length of greater than 75 feet for slopes with a grade of 3:1 or steeper. 2. Sediment control practices must be established on all down gradient perimeters before any upgradient land disturbing activities begin. These practices shall remain in place until Final Stabilization has been established in accordance with Part W.G. 3. The timing of the installation of sediment control practices may be adjusted to accommodate short-term activities such as clearing or grubbing, or passage of vehicles. Any short -term activity must be completed as quickly as possible and the sediment control practices must be installed immediately after the activity is completed. However, sediment control practices must be installed before the next precipitation event even if the activity is not complete. 4. All storm drain inlets must be protected by appropriate BMWs during construction until all sources with potential for discharging to the inlet have been stabilized. Inlet protection may be removed for a particular inlet if a specific safety concern (street flooding/freezing) has been identified and the Permittee(s) have received written correspondence from the jurisdictional authority (e.g. city /county /township /MnDOT engineer) verifying the need for removal. The written correspondence must be documented in the SWPPP or available within 72 hours upon wq- strm2 -51 Page 18 of' 0 Permit No: MN R100001 request. When written correspondence can not be obtained in a timely manner, the specific inlet protection can be removed to alleviate the immediate safety concern. However, efforts to obtain is written correspondence must be documented in the SWPPP and available within 72 hours upon request. Permission to remove inlet protection based on a specific safety concern must still be obtained from the jurisdictional authority within 30 days of removal. 5. Temporary soil stockpiles must have silt fence or other effective sediment controls, and cannot be placed in surface waters, including stormwater conveyances such as curb and gutter systems, or conduits and ditches unless there is a bypass in place for the stormwater. 6. Vehicle tracking of sediment from the construction site (or onto streets within the site) must be minimized by BMPs such as stone pads, concrete or steel wash racks, or equivalent systems. Street sweeping must be used if such BMWs are not adequate to prevent sediment from being tracked onto the street (see Part IV.E.4.d.). 7. The Permittee must install temporary sedimentation basins as required in Part III.B. of this permit. D. DEWATERING AND BASIN DRAINING Dewatering or basin draining (e.g., pumped discharges, trench/ditch cuts for drainage) related to the construction activity that may have turbid or sediment laden discharge water must be discharged to a temporary or permanent sedimentation basin on the project site whenever possible. Discharge from the temporary or permanent sedimentation basin must be visually checked to ensure adequate treatment is obtained in the basin and that nuisance conditions (see Minn. R. 7050.0210, subp. 2) will not result from the discharge. If the water cannot be discharged to a sedimentation basin prior to entering the surface water, it must be treated with the appropriate BMPs, such that the discharge does not adversely affect the receiving water or downstream landowners. The Permittee(s) must ensure that discharge points are adequately protected from erosion and scour. The discharge must be dispersed over natural rock riprap, sand bags, plastic sheeting, or other accepted energy dissipation measures. Adequate sedimentation control measures are required for discharge water that contains suspended solids. 2. All water from dewatering or basin draining activities must be discharged in a marmer that does not cause nuisance conditions, erosion in receiving channels or on downslope properties, or inundation in wetlands causing significant adverse impact to the wetland. E. INSPECTIONS AND MAINTENANCE 1. The Permittee(s) (either the owner or operator, whoever is identified in the SWPPP) must routinely inspect the entire construction site at least once every seven (7) days during active construction and within 24 hours after a rainfall event greater than 0.5 inches in 24 hours. Following an inspection which occurs within 24 hours after a rainfall event, the next inspection must be conducted within seven (7) days after that. All inspections and maintenance conducted during construction must be recorded in writing and these records must be retained with the SWPPP in accordance with Part E LD. Records of each inspection and maintenance activity shall include: 0 a. Date and time of inspections; wq- strm2 -51 Page 19 of 30 Permit No: MN R100001 • b. Name of person(s) conducting inspections; c. Findings of inspections, including recommendations for corrective actions; d. Corrective actions taken (including dates, times, and party completing maintenance activities); e. Date and amount of all rainfall events greater than 1/2 inch (0.5 inches) in 24 hours; f. Documentation of changes made to the SWPPP as required in Part III.A.4; and Where parts of the construction site have permanent cover, but work remains on other parts of the site, inspections of the areas with permanent cover may be reduced to once per month. Where construction sites have permanent cover on all exposed soil areas and no construction activity is occurring anywhere on the site, the site must be inspected for a period of twelve (12) months (the inspections may be ceased during frozen ground conditions). Following the twelfth month of permanent cover and no construction activity, inspections may be terminated until construction activity is once again initiated or sooner if notified in writing by the MPCA. Where work has been suspended due to frozen ground conditions, the required inspections and maintenance schedule must begin within 24 hours after runoff occurs at the site or prior to resuming construction, whichever comes first. • 4. All erosion prevention and sediment control BMPs must be inspected to ensure integrity and effectiveness. All nonfunctional BMPs must be repaired, replaced, or supplemented with functional BMPs within 24 hours after discovery, or as soon as field conditions allow access unless another time frame is specified below. The Permittee(s) must investigate and comply with the following inspection and maintenance requirements: a. All silt fences must be repaired, replaced, or supplemented when they become nonfunctional or the sediment reaches 1/3 of the height of the fence. These repairs must be made within 24 hours of discovery, or as soon as field conditions allow access. b. Temporary and permanent sedimentation basins must be drained and the sediment removed when the depth of sediment collected in the basin reaches 1/2 the storage volume. Drainage and removal must be completed within 72 hours of discovery, or as soon as field conditions allow access (see Part W.D.). c. Surface waters, including drainage ditches and conveyance systems, must be inspected for evidence of erosion and sediment deposition. The Permittee(s) must remove all deltas and sediment deposited in surface waters, including drainage ways, catch basins, and other drainage systems, and restabilize the areas where sediment removal results in exposed soil. The removal and stabilization must take place within seven (7) days of discovery unless precluded by legal, regulatory, or physical access constraints. The Permittee shall use all reasonable efforts to obtain access. If precluded, removal and stabilization must take place within seven (7) calendar days of obtaining access. The Permittee is responsible for • contacting all local, regional, state and federal authorities and receiving any applicable permits, prior to conducting any work. wq- stnn2 -51 Page 20 of 30 Permit No: MN R100001 d. Construction site vehicle exit locations must be inspected for evidence of off -site sediment tracking onto paved surfaces. Tracked sediment must be removed from all paved surfaces, • within 24 hours of discovery, or if applicable, within a shorter time to comply with Part IV.C.6. The Permittee(s) are responsible for the operation and maintenance of temporary and permanent water quality management BMPs, as well as all erosion prevention and sediment control BMPs, for the duration of the construction work at the site. The Permittee(s) are responsible until another Permittee has assumed control according to Part II.B.5 over all areas of the site that have not been finally stabilized or the site has undergone Final Stabilization, and a NOT has been submitted to the MPCA. f. If sediment escapes the construction site, off -site accumulations of sediment must be removed in a manner and at a frequency sufficient to minimize off -site impacts (e.g., fugitive sediment in streets could be washed into storm sewers by the next rain and/or pose a safety hazard to users of public streets). 5. All infiltration areas must be inspected to ensure that no sediment from ongoing construction activity is reaching the infiltration area and these areas are protected from compaction due to construction equipment driving across the infiltration area. F. POLLUTION PREVENTION MANAGEMENT MEASURES The Permittee(s) shall implement the following pollution prevention management measures on the site: • 1. Solid Waste: Collected sediment, asphalt and concrete millings, floating debris, paper, plastic, fabric, construction and demolition debris and other wastes must be disposed of properly and must comply with MPCA disposal requirements. 2. Hazardous Materials: Oil, gasoline, paint and any hazardous substances must be properly stored, including secondary containment, to prevent spills, leaks or other discharge. Restricted access to storage areas must be provided to prevent vandalism. Storage and disposal of hazardous waste must be in compliance with MPCA regulations. 3. External washing of trucks and other construction vehicles must be limited to a defined area of the site. Runoff must be contained and waste properly disposed of. No engine degreasing is allowed on site. 4. Concrete washout onsite: All liquid and solid wastes generated by concrete washout operations must be contained in a leak -proof containment facility or impermeable liner. A compacted clay liner that does not allow washout liquids to enter ground water is considered an impermeable liner. The liquid and solid wastes must not contact the ground, and there must not be runoff from the concrete washout operations or areas. Liquid and solid wastes must be disposed of properly and in compliance with MPCA regulations. A sign must be installed adjacent to each washout facility to inform concrete equipment operators to utilize the proper facilities. G. FINAL STABILIZATION The Permittee(s) must ensure Final Stabilization of the site. Final Stabilization requires all of • Parts W.G. 1-5 or Part IV.G.6: wq- stmi2 -51 Page 21 of 30 Permit No: MN R100001 1. Final Stabilization requires that all soil disturbing activities at the site have been completed and all soils must be stabilized by a uniform perennial vegetative cover with a density of 70% over the entire pervious surface area, or other equivalent means necessary to prevent soil failure under erosive conditions. 2. The Permittee(s) must ensure that the permanent stormwater treatment system meets all requirements in Part III, C. This includes but is not limited to, a final clean out of temporary or permanent sedimentation basins that are to be used as permanent water quality management basins and final construction or maintenance of infiltration basins. All sediment must be removed from conveyance systems and ditches must be stabilized with permanent cover. Prior to submission of the NOT, all temporary synthetic and structural erosion prevention and sediment control BMPs (such as silt fence) must be removed on the portions of the site for which the Permittee is responsible. BMPs designed to decompose on site (such as some compost logs) may be left in place. 4. For residential construction only, individual lots are considered finally stabilized if the structure(s) are fmished & temporary erosion protection and downgradient perimeter control has been completed and the residence has been sold to the homeowner. Additionally, the Permittee must distribute the MPCA's "Homeowner Fact Sheet" to the homeowner to inform the homeowner of the need for, and benefits of, permanent cover. 5. For construction projects on land used for agricultural purposes (e.g., pipelines across crop or is range land) Final Stabilization may be accomplished by returning the disturbed land to its preconstruction agricultural use. 6. A Permittee may terminate permit coverage prior to completion of all construction activity if all of the following conditions are met in addition to Part IV.G.2 through Part W.G.3 and where applicable, Part W.G.4 or Part W.G.5. a. Construction activity has ceased for at least 90 days. b. At least 90% (by area) of all originally proposed construction activity has been completed and permanent cover established on those areas. c. On areas where construction activity is not complete, permanent cover has been established. PART V. GENERAL PROVISIONS A. APPLICABILITY CRITERIA 1. If the Commissioner determines that stormwater discharges associated with a construction activity are contributing to a violation of a water quality standard or would be more appropriately regulated by an individual permit, the Commissioner may require the owner to be covered by an individual stormwater discharge permit. The Commissioner may require the • owner to develop and implement specific BMPs and monitor the discharge from the site. If applicable, upon issuance of an individual permit, this general permit would no longer apply. wq- strm2 -51 Page 22 of 30 Permit No: MN R100001 2. If the terms and conditions of this general permit cannot be met, an owner may request an individual permit, in accordance with Minn. R. 7001. 0 3. Any interested person may petition the MPCA to require an individual NPDES /SDS permit in accordance with 40 CFR 122.28(b)(3). B. RESPONSE The SWPPP, including all certificates, reports, records, or other information required by this permit, must be made available to federal, state, and local officials within 72 hours upon request for the duration of the pen and for three years following the NOT. This does not include any records after submittal of the NOT. C. PROHIBITIONS This permit prohibits discharges of any material other than stormwater, and discharges from dewatering or basin draining activities in accordance with Part IV.D.I and 2. For example, prohibited discharges include but are not limited to vehicle and equipment washing, maintenance spills, wash water, and discharges of oil and other hazardous substances. D. TRANSFER OF OWNERSHIP OR CONTROL This permit may not be assigned or transferred by the pen holder except when transfer occurs in accordance with the applicable requirements of Part II.B.5. 40 E. CIVIL AND CRIMINAL LIABILITY Nothing in this permit must be construed to relieve the Permittee(s) from civil or criminal penalties for noncompliance with the terms and conditions provided herein. Nothing in this permit must be construed to preclude the initiation of any legal action or relieve the Permittee(s) from any responsibilities, liabilities, or penalties to which the Permittee(s) is or may be subject to under Section 311 of the Act and Minn. Stat. chs. 115 and 116, as amended. The Permittee(s) are not liable for permit requirements for activities occurring on those portions of a site where another party has submitted a notice of termination/permit modification form as described in Part H. B.5.b or the pennittee has submitted the notice of termination/pennit modification form as described in Part II.C.2.b except for monitoring responsibilities listed under Part III.C.5 if applicable. F. SEVERABILITY The provisions of this permit are severable. If any provision of this permit, or the application of any provision of this permit to any circumstances, is held invalid, the application of such provision to other circumstances, and the remainder of this permit must not be affected thereby. G. NPDES /SDS RULE STANDARD CONDITIONS The Permittee(s) must comply with the provisions of Mimi. R. 7001.0150, subp. 3 and Minn. R. 7001.1090, subp. 1(A), 1(B), 1(C), 1(H), and 1(I). This permit does not require the submittal of a data monitoring report, except where monitoring is required in Part III.C.5. • H. INSPECTION AND ENTRY wq- strm2 -51 Page 23 of' 0 Permit No: MN R100001 • The Permittee(s) must comply with the provisions of 40 CFR 122.41(i), Minn. Stat. ch. 115.04 and Minn. Stat. ch. I I5B.17. The Permittee(s) shall allow representatives of the MPCA or any member, employee or agent thereof, when authorized by it, upon presentation of credentials, to enter upon any property, public or private, for the purpose of obtaining information or examination of records or conducting surveys or investigations. APPENDIX A A. GENERAL REQUIREMENTS All requirements in this Appendix are in addition to BMPs already specified in the permit. Where provisions of Appendix A conflict with requirements elsewhere in the permit, the provisions in Appendix A take precedence. All BMPs used to comply with this Appendix must be documented in the SWPPP for the project. If the terms and conditions of this Appendix cannot be met, an individual permit will be required in accordance with Minn. R. ch. 7001. B. REQUIREMENTS FOR DISCHARGES TO SPECIAL WATERS AND IMPAIRED WATERS Additional BMPs together with enhanced runoff controls are required for discharges to the following special waters (part B.1 through B.8 of Appendix A) and impaired waters (part B.9 of Appendix A). The BMPs identified for each special or impaired water are required for those areas of the project draining to a discharge point on the project that is within one mile of a special or impaired water and flows to that special or impaired water. • 1. Wilderness areas: Boundary Waters Canoe Area Wilderness; Voyageurs National Park; Kettle River from the site of the former dam at Sandstone to its confluence with the Saint Croix River; Rum River from Ogechie Lake spillway to the northernmost confluence with Lake Onamia. Discharges to these waters must incorporate the BMPs outlined in C.1, C.2, C.3 and CA of this Appendix. 2. Mississippi River: Those portions from Lake Itasca to the southerly boundary of Morrison County that are included in the Mississippi Headwaters Board comprehensive plan dated February 12, 1981. Discharges to these waters must incorporate the BMPs outlined in C.1, C.2 and C.3 of this Appendix. Scenic or recreational river segments: Saint Croix river, entire length; Cannon River from northern city limits of Faribault to its confluence with the Mississippi River; North Fork of the Crow River from Lake Koronis outlet to the Meeker - Wright county line; Kettle River from north Pine County line to the site of the former dam at Sandstone; Minnesota River from Lac qui Parle dam to Redwood County state aid highway 11; Mississippi River from county state aid highway 7 bridge in Saint Cloud to northwestern city limits of Anoka; and Rum River from state aid Highway 27 bridge in Onamia to Madison and Rice streets in Anoka. Discharges to these waters must incorporate the BMPs outlined in C.1, C.2 and C3 of this Appendix. 4. Lake Superior: (Prohibited and restricted.) Discharges to Lake Superior must incorporate the BMPs outlined in C.1, C.2 and C.3 of this Appendix. 0 5. Lake Trout Lakes: Identified in Minn. R. 7050.0470, including those inside the boundaries of the Boundary Waters Canoe Area Wilderness and Voyageurs National Park. Discharges to these waters must incorporate the BMPs outlined in C.1, C.2, C.3 and CA of this Appendix. wq- strm2 -51 Page 24 of 30 Permit No: MN R100001 6. Trout Lakes: Identified in Minn. R. 6264.0050, subp. 2. Discharges to these waters must • incorporate the BMPs outlined in C.1, C.2, C.3, and CA of this Appendix. Scientific and natural areas: Boot Lake, Anoka County; Kettle River in sections 15, 22, 23, T 41 N, R 20, Pine County; Pennington Bog, Beltrami County; Purvis Lake -Ober Foundation, Saint Louis County; Waters within the borders of Itasca Wilderness Sanctuary, Clearwater County; Iron Springs Bog, Clearwater County; Wolsfeld Woods, Hennepin County; Green Water Lake, Becker County; Blackdog Preserve, Dakota County; Prairie Bush Clover, Jackson County; Black Lake Bog, Pine County; Pembina Trail Preserve, Polk County; and Falls Creek, Washington County. Discharges to these waters must incorporate the BMPs outlined in C.1, C.2, C.3 and CA of this Appendix. Trout Streams: Listed in Minn. R. 6264.0050, subp. 4. Discharges to these waters must incorporate the BMPs outlined in C.1, C.2, C.3, and C.5 of this Appendix. 9. Impaired Waters: waters identified as impaired under section 303 (d) of the federal Clean Water Act for phosphorus (nutrient eutrophication biological indicators), turbidity, dissolved oxygen or aquatic biota (fish bioassessment, aquatic plant bioassessment and aquatic macroinvertebrate bioassessment). Discharges to these waters must incorporate the BMPs outlined in C.1 and C.2 of this Appendix. Note on impaired waters listing terminology: The terms in parenthesis in Appendix A Part B.9 above are the most current terminology used to list waters as impaired at the time of permit issuance. These terms are subject to change. For example, at one time waters were listed as impaired for phosphorus and now those same waters are listed as impaired for nutrient eutrophication biological indicators. If • the terminology changes for one of the pollutant(s) or stressor(s) identified in the permit, the MPCA will keep a list of the new terms on its construction stormwater web site. C. ADDITIONAL BMPS FOR SPECIAL WATERS AND IMPAIRED WATERS For the BMPs described in C.2, CA and C.5 of this Appendix: Where the proximity to bedrock precludes the installation of any of the permanent stormwater management practices outlined in Appendix A, other treatment such as grassed swales, smaller ponds, or grit chambers is required prior to discharge to surface waters. For work on linear projects where the lack of right of way precludes the installation of any of the permanent stormwater management practices outlined in Appendix A, other treatment such as grassed swales, smaller ponds, or grit chambers is required prior to discharge to surface waters. 1. During construction. a. All exposed soil areas must be stabilized as soon as possible to limit soil erosion but in no case later than seven (7) days after the construction activity in that portion of the site has temporarily or permanently ceased. b. Temporary sediment basin requirements described in Part III.13.1 -5 must be used for common drainage locations that serve an area with five (5) or more acres disturbed at one time. 2. Post construction. The water quality volume that must be treated by the project's permanent stormwater management system described in Part III.C. shall be one (1) inch of runoff from the wq- strm2 -51 Page 25 of 30 Permit No: MN R100001 new impervious surfaces created by the project. Where site conditions allow, at least 1 /2 inch of • the water quality volume must be infiltrated. See Part III.C.2 for more information on infiltration design and appropriate site conditions. If it is determined that site conditions are not appropriate for infiltration (e.g. lack of 3 ft. of separation to seasonally saturated ground water, proximity to bedrock, contaminated soils) the reasons should be documented in the SWPPP for the project. Infiltration is not required in Hydrologic Soil Group D soils. Buffer zone. An undisturbed buffer zone of not less than 100 linear feet from the special water (not including tributaries) shall be maintained at all times. Exceptions from this requirement for areas, such as water crossings, limited water access and restoration of the buffer are allowed if the Permittee fully documents in the SWPPP the circumstances and reasons that the buffer encroachment is necessary. Replacement of existing impervious surface within the buffer is allowed under this permit. All potential water quality, scenic and other environmental impacts of these exceptions must be minimized by the use of additional or redundant BMWs and documented in the SWPPP for the project. 4. Enhanced runoff controls. The Permanent Stormwater Management System must be designed such that the pre -and post - project runoff rate and volume from the 1 and 2 -year 24 -hour precipitation events remain the same or are reduced. 5. Temperature Controls. The Permanent Stormwater Management System must be designed such that the discharge from the project will minimize any increase in the temperature of trout stream receiving waters resulting from the 1 -and 2 -year 24 -hour precipitation events. This includes all tributaries of designated trout streams within the section that the trout stream is located. Projects • that discharge to trout streams must minimize the impact using one or more of the following measures, in order of preference: a. Minimize new impervious surfaces. b. Minimize the discharge from comiected impervious surfaces by discharging to vegetated areas, or grass swales, and through the use of other non - structural controls. c. Infiltration or evapotranspiration of runoff in excess of pre - project conditions (up to the 2- year 24 -hour precipitation event). d. If ponding is used, the design must include an appropriate combination of measures such as shading, filtered bottom withdrawal, vegetated Swale discharges or constructed wetland treatment cells that will limit temperature increases. The pond should be designed to draw down in 24 hours or less. e. Other methods that will minimize any increase in the temperature of the trout stream. D. REQUIREMENTS FOR DISCHARGING TO WETLANDS If the project has any stormwater discharges with the potential for significant adverse impacts to a wetland (e.g., conversion of a natural wetland to a stormwater pond) , the Permittee(s) must demonstrate that the wetland mitigative sequence has been followed in accordance with D.1 or D.2 • of this appendix. 1. If the potential adverse impacts to a wetland on a specific project site have been addressed by Wq- strm2 -51 Page 26 of 30 Permit No: MN R100001 permits or other approvals from an official statewide program (U.S. Army Corps of Engineers 404 program, Minnesota DNR, or the State of Minnesota Wetland Conservation Act) that are • issued specifically for the project and project site, the Permittee may use the pen or other determination issued by these agencies to show that the potential adverse impacts have been addressed. For the purposes of this permit, deminimus actions are determinations by the permitting agency that address the project impacts, whereas a non jurisdictional determination does not address project impacts. 2. If there are impacts from the project that are not addressed in one of the permits or other detenninations discussed in Appendix A, Part D. l (e.g., permanent inundation or flooding of the wetland, significant degradation of water quality, excavation, filling, draining), the Permittee must minimize all adverse impacts to wetlands by utilizing appropriate measures. Measures used must be based on the nature of the wetland, its vegetative community types and the established hydrology. These measures include in order of preference: a. Avoid all significant adverse impacts to wetlands from the project and post - project discharge. b. Minimize any unavoidable impacts from the project and post - project discharge. c. Provide compensatory mitigation when the Permittee determines that there is no reasonable and practicable alternative to having a significant adverse impact on a wetland. For compensatory mitigation, wetland restoration or creation shall be of the same type, size and whenever reasonable and practicable in the same watershed as the impacted wetland. E. DISCHARGES REQUIRING ENVIRONMENTAL REVIEW • This permit does not replace or satisfy any environmental review requirements, including those under the Minnesota Environmental Policy Act or the National Environmental Policy Act. The owner must verify that any environmental review required by law, including any required Environmental Assessment Work Sheets or Environmental Impact Statements, Federal environmental review, or other required review is complete, and the owner must incorporate any stormwater mitigation measures required as the result of any environmental review into the SWPPP for the project. If any part of your common plan of development or sale requires environmental review, coverage under this permit can not be obtained until such environmental review is complete. F. DISCHARGES AFFECTING ENDANGERED OR THREATENED SPECIES This permit does not replace or satisfy any review requirements for endangered or threatened species, from new or expanded discharges that adversely impact or contribute to adverse impacts on a listed endangered or threatened species, or adversely modify a designated critical habitat. The owner must conduct any required review and coordinate with appropriate agencies for any project with the potential of affecting threatened or endangered species, or their critical habitat. G. DISCHARGES AFFECTING HISTORIC PLACES OR ARCHEOLOGICAL SITES This permit does not replace or satisfy any review requirements for historic places or archeological sites, from new or expanded discharges which adversely affect properties listed or eligible for listing • in the National Register of Historic Places or affecting known or discovered archeological sites. The owner must be in compliance with National Historic Preservation Act and conduct all required wq- strm2 -51 Page 27 of 30 Permit No: MN R100001 review and coordination related to historic preservation, including significant anthropological sites • and any burial sites, with the Minnesota Historic Preservation Officer. APPENDIX B. - DEFINITIONS 1. "Best Management Practices (BMPs)" means erosion prevention and sediment control, and water quality management practices that are the most effective and practicable means of controlling, preventing, and minimizing degradation of surface water, including avoidance of impacts, construction- phasing, minimizing the length of time soil areas are exposed, prohibitions, and other management practices published by state or designated area -wide planning agencies. Individual BMPs found in this permit are described in the current version of Protecting Water uali in Urban Areas Minnesota Pollution Control Agency 2000. BMPs must be adapted to the site and can be adopted from other sources. However, they must be similar in purpose and at least as effective and stringent as MPCA's BMPs. (Other sources include manufacturers specifications, Storm Water Management for Construction Activities Developing Pollution Prevention Plans and Best Management Practices U.S. Environmental Protection Agency 1992, and Erosion Control Design Manual Minnesota Department of Transportation, et al, 1993). 2. "Commissioner" means the Commissioner of the MPCA or the Commissioner's designee. 3. "Common Plan of Development or Sale" means a contiguous area where multiple separate and distinct land disturbing activities may be taking place at different times, on different schedules, but under one proposed plan. One plan is broadly defined to include design, permit application, • advertisement or physical demarcation indicating that land - disturbing activities may occur. 4. "Construction Activity" includes construction activity as defined in 40 C.F.R. pt. 122.26(b)(14)(x) and small construction activity as defined in 40 C.F.R. pt. 122.26(b)(15). This includes a disturbance to the land that results in a change in the topography, existing soil cover (both vegetative and non- vegetative), or the existing soil topography that may result in accelerated stormwater runoff, leading to soil erosion and movement of sediment into surface waters or drainage systems. Examples of construction activity may include clearing, grading, filling, and excavating. Construction activity includes the disturbance of less than one acre of total land area that is a part of a larger common plan of development or sale if the larger common plan will ultimately disturb one (1) acre or more. 5. "Dewatering" means the removal of water for construction activity. It can be a discharge of appropriated surface or groundwater to dry and/or solidify a construction site. It may require Minnesota DNR permits to be appropriated and if contaminated may require other MPCA permits to be discharged. 6. "Energy Dissipation" means methods employed at pipe outlets to prevent erosion. Examples include, but are not limited to: concrete aprons, riprap, splash pads, and gabions that are designed to prevent erosion. 7. "Erosion Prevention" means measures employed to prevent erosion including but not limited to: soil stabilization practices, limited grading, mulch, temporary erosion protection or permanent • cover, and construction phasing. 8. "Final Stabilization" See part IV.G. wq- strm2 -51 Page 28 of 30 Permit No: MN R100001 9. "General Contractor" means the party who signs the construction contract with the owner or • operator to construct the project described in the final plans and specifications. Where the construction project involves more than one contractor, the general contractor could be the party responsible for managing the project on behalf of the owner or operator. In some cases, the owner or operator may be the general contractor. In these cases, the owner may contract an individual as the operator who would become the Co- Permittee. 10. "Homeowner Fact Sheet" means a fact sheet developed by the MPCA to be given to homeowners at the time of sale by a builder to inform the homeowner of the need for, and benefits of, Final Stabilization. 11. "Impervious Surface" means a constructed hard surface that either prevents or retards the entry of water into the soil and causes water to run off the surface in greater quantities and at an increased rate of flow than prior to development. Examples include rooftops, sidewalks, patios, driveways, parking lots, storage areas, and concrete, asphalt, or gravel roads. 12. "National Pollutant Discharge Elimination System (NPDES)" means the program for issuing, modifying, revoking, reissuing, terminating, monitoring, and enforcing permits under the Clean Water Act (Sections 301, 318, 402, and 405) and United States Code of Federal Regulations Title 33, Sections 1317, 1328, 1342, and 1345.. 13. "Normal Wetted Perimeter" means the area of a conveyance, such as a ditch, channel, or pipe that is in contact with water during flow events that are expected to occur once every year. 14. "Notice of Termination" means notice to terminate coverage under this permit after construction is • complete, the site has undergone Final Stabilization, and maintenance agreements for all permanent facilities have been established, in accordance with all applicable conditions of this permit. 15. "Operator" means the person (usually the general contractor), designated by the owner, who has day to day operational control and/or the ability to modify project plans and specifications related to the SWPPP. The person must be knowledgeable in those areas of the permit for which the operator is responsible, (Part H.B. and Part IV.) and must perform those responsibilities in a workmanlike manner. 16. "Owner" means the person or party possessing the title of the land on which the construction activities will occur; or if the construction activity is for a lease, easement, or mineral rights license holder, the party or individual identified as the lease, easement or mineral rights license holder; or the contracting government agency responsible for the construction activity. 17. "Permanent Cover" means surface types that will prevent soil failure under erosive conditions. Examples include: gravel, asphalt, concrete, rip rap, roof tops, perennial cover, or other landscaped material that will permanently arrest soil erosion. A uniform perennial vegetative cover (e.g., evenly distributed, without large bare areas) with a density of 70% of the native background vegetative cover for the area must be established on all unpaved areas and areas not covered by permanent structures, or equivalent permanent stabilization measures. Permanent cover does not include the practices listed under temporary erosion protection. 18. " Permittee" means a person or persons, firm, or governmental agency or other institution that signs • the application submitted to the MPCA and is responsible for compliance with the terms and wq- stmi2 -51 Page 29 of 30 Permit No: MN R100001 conditions of this permit. • 19. "Public Waters" means all water basins and watercourses that are described in Minn. Stat. 103G.005 subd. 15 20. "Saturated Soil" means the highest seasonal elevation in the soil that is in a reduced chemical state because of soil voids being filled with water. Saturated soil is evidenced by the presence of redoximorphic features or other information. 21. "Sediment Control' means methods employed to prevent sediment from leaving the site. Sediment control practices include silt fences, sediment traps, earth dikes, drainage swales, check dams, subsurface drains, pipe slope drains, storm drain inlet protection, and temporary or permanent sedimentation basins. 22. "Small Construction Activity" means small construction activity as defined in 40 C.F.R. part 122.26(b)(15) . Small construction activities include clearing, grading and excavating that result in land disturbance of equal to or greater than one acre and less than five acres. Small construction activity includes the disturbance of less than one (1) acre of total land area that is part of a larger common plan of development or sale if the larger common plan will ultimately disturb equal to or greater than one and less than five (5) acres. 23. "Stabilized" means the exposed ground surface has been covered by appropriate materials such as mulch, staked sod, riprap, erosion control blanket, mats or other material that prevents erosion from occurring. Applying mulch, hydromulch, tackifier, polyacrylamide or similar erosion prevention • practices is not acceptable stabilization in temporary or permanent drainage ditches or areas where concentrated overland flow occurs. Grass seeding is not stabilization. 24. "Standard Plates" means general drawings having or showing similar characteristics or qualities that are representative of a construction activity or practice. 25. "Stormwater" is defined under Minn. R. 7077.0105, subp. 41(b), and includes precipitation runoff, stormwater runoff, snowmelt runoff, and any other surface runoff and drainage. 26. "Storm Water Pollution Prevention Plan" means a plan for stormwater discharge that includes erosion prevention measures, sediment controls and Permanent Stormwater Management Systems that, when implemented, will decrease soil erosion on a parcel of land and decrease off -site nonpoint pollution. 27. "Surface Water or Waters" means all streams, lakes, ponds, marshes, wetlands, reservoirs, springs, rivers, drainage systems, waterways, watercourses, and irrigation systems whether natural or artificial, public or private. 28. "Temporary Erosion Protection" means methods employed to prevent erosion. Examples of temporary erosion protection include; straw, wood fiber blanket, wood chips, and erosion netting. 29. "Underground Waters" means water contained below the surface of the earth in the saturated zone • including, without limitation, all waters whether under confined, unconfined, or perched conditions, in near surface unconsolidated sediment or regolith, or in rock formations deeper underground. The term ground water shall be synonymous with underground water. wq- strm2 -51 Page 30 of 30 Permit No: MN R100001 30. "Waters of the State" (as defined in Minn. Stat. § 115.01, subd. 22) means all streams, lakes, ponds, • marshes, watercourses, waterways, wells, springs, reservoirs, aquifers, irrigation systems, drainage systems and all other bodies or accumulations of water, surface or underground, natural or artificial, public or private, which are contained within, flow through, or border upon the state or any portion thereof. 31. "Water Quality Volume" means 1 /2 inch of runoff from the new impervious surfaces created by this project and is the volume of water to be treated in the Permanent Stormwater Management System, as required by this permit except as provided in Appendix A.C.2. 32. "Wetland" or "Wetlands" is defined in Minn. R. 7050.0130, subp. F and includes those areas that are inundated or saturated by surface water or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. Constructed wetlands designed for wastewater treatment are not waters of the state. Wetlands must have the following attributes: a. A predominance of hydric soils; b. Inundated or saturated by surface water or ground water at a frequency and duration sufficient to support a prevalence of hydrophytic vegetation typically adapted for life in a saturated soil condition; and c. Under normal circumstances support a prevalence of such vegetation. • wq- strm2 -51 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix D — NOI, Acknowledgment Letter from MPCA and Notice of Termination 0 EPA SWPPP Template, Version 1.1, September 17, 2007 50 Minnesota Pollution Control Agency Nonce of Terms nation / 520 Lafayette Road North Permit Modification Form • St. Paul, MN 55155 -4194 NPDES Construction Stormwater Permit Program Transfer or terminate your National Pollutant Discharge Elimination System (NPDES) Construction Stormwater Permit. Allowable changes are permit termination and permit transfer for all or a portion of the site. This form replaces the Notice of Termination (NOT), Permit Transfer, Permit Modification, and Subdivision Registration forms used under the former permit. Instructions for this form are located on the Internet at http: / /www.pca. state. mn. us /publications /wq- strm2- 60i.pdf. Form will be invalid and returned to sender unless the checkbox associated with the applicable actions is checked and the corresponding signature is provided in section A -1, A -2, A -3, and or A-4. Please submit to: Construction Stormwater Permit Program Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, Minnesota 55155 -4194 Existing Permit Identification a. Current permit ID: C000 _ _ _ _ _ or SUB00 b. Project name: Project location: Briefly describe where the construction activity occurs (for example: Intersection of 45th St. and Irving Ave.). Include address if available. • Select Option 1, 2, or 3 1. Notice of Termination (NOT) for entire site by existing owner Select this option when a project has achieved final stabilization with existing owner IF contractor and no part of the site is being transferred to a new owner and all construction activity is complete. c. ❑ Notice of Termination for entire existing permitted site or a subdivided site. (Current owner and contractor must sign under the "Current" Owner and "Current" Contractor sections respectively). Check above box and sign section A -1 and A -2 on page 2. 2. Transfer of entire site to new owner or contractor (Transfer /Modification) Select this option if the entire site (represented by the ID above) has either a new owner and /or new general contractor. Check all the boxes below that apply. d El New Owner for entire existing permitted site. f. ❑ Current Owner for entire existing permitted site. e. ❑ New Contractor for entire existing permitted site. g. ❑ Current Contractor for entire existing permitted site. 3. h. Check above box(es) and sign section A -3 and A -4 page 3 and or check above box(es) and sign section A -1 and A -2 page 2 Both "Current" and `New" Parties must sign this form (preferred), however, separate forms are acceptable. Transfer of a portion of a site to a new owner or contractor (Subdivision) Select this option if a portion of a site (permitted under the ID above) has either a new owner and /or new general contractor. Check the boxes below that apply. Describe the portion of the site being transferred: Lot Project location /address: City, State, and Zip: Block Example: SW quadrant of 45th Street and Irving Avenue or Lots 1 -17 of block 20. Include list of addresses if available or include a map is i. ❑ New Owner for portion of existing site. k. ❑ Current Owner of the portion to be transferred. j. ❑ New Contractor for portion of existing site. I. ❑ Current Contractor of the portion to be transferred. Check above box(es) and sign section A -3 and A-4 page 3 and or check above box(es) and sign section A -1 and A -2 page 2 Both "Current" and "New" Parties must sign this form (preferred), however, separate forms are acceptable. www.pca.state.mn.us • 651 - 296 -6300 800 - 657 -3864 TTY 651 - 282 -5332 or 800 - 657 -3864 • Available in alternative formats wq- strm2 -60 • 7120109 Page 1 of 3 Current Owner Authorized Signature (A -1) Business /Firm name: • Last name: E -mail address: Mailin address: City: Alternate contact: Last name: Ext. E -mail address: Telephone: ( ) Ext. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage this system, or the persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I also certify under penalty of law that I have read, understood, and accepted all terms and conditions of the National Pollutant Discharge Elimination System (NPDES) /State Disposal System (SDS) General Stormwater Permit Construction Activity (MN R100001) that authorizes stormwater discharges associated with the construction site identified on this form. Authorized signature: This Application must be signed by: Corporation: a principal executive officer of at least the level of vice-president or the duly authorized representative or agent of the executive officer if the representative or agent is responsible for the overall operation of the facility that is the subject of the permit application. Partnership or Sole Proprietorship: a general partner or the proprietor. Municipality, State, Federal or Other Public Agency. principal executive officer or ranking elected official. • Current Contractor Authorized Signature (A -2) Business /Firm name: Last name: E -mail address: Mailin address: City: Alternate contact: Last name: E -mail address: First name: Zip -code: Title: Telephone: ( ) Ext. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage this system, or the persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I also certify under penalty of law that I have read, understood, and accepted all terms and conditions of the National Pollutant Discharge Elimination System (NPDES) /State Disposal System (SDS) General Stormwater Permit Construction Activity (MN R100001) that authorizes stormwater discharges associated with the construction site identified on this form. Authorized signature: Date: This Application must be signed by. Corporation: a principal executive officer of at least the level of vice-president or the duly authorized representative or agent of the executive officer if the representative or agent is responsible for the overall operation of the facility that is the subject of the permit application. Partnership or Sole Proprietorship: a general partner or the proprietor. • Municipality, State, Federal or Other Public Agency. principal executive officer or ranking elected official. First name: Date: Title: Telephone: ( ) Ext. State: Title: Telephone: Zip code: Title: First name: State: First name: www.pca.state.mn.us 651 - 296 -6300 800 - 657 -3864 TTY 651 - 282 -5332 or 800 - 657 -3864 • Available in altemative formats wq- strm1 -60 • 7120109 Page 2 of 3 "New" Owner Authorized Signature (A -3) Business /Firm name: Last name: E -mail address: Mailin address: City: Alternate contact: Last name: E -mail address: State: First name: Title: Telephone: ( ) Ext. Zip code: Title: Telephone: ( ) Ext. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage this system, or the persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I also certify under penalty of law that I have read, understood, and accepted all terms and conditions of the National Pollutant Discharge Elimination System (NPDES) /State Disposal System (SDS) General Stormwater Permit Construction Activity (MN R100001) that authorizes stormwater discharges associated with the construction site identified on this form. Authorized signature: Date: This Application must be signed by. Corporation: a principal executive officer of at least the level of vice-president or the duly authorized representative or agent of the executive officer if the representative or agent is responsible for the overall operation of the facility that is the subject of the permit application. Partnership or Sole Proprietorship: a general partner or the proprietor. Municipality, State, Federal or Other Public Agency. principal executive officer or ranking elected official. 10 New" Contractor Authorized Signature (A -4) Business /Firm name: Last name: E -mail address: Mailin address: City: Alternate contact: Last name: E -mail address: First name: State: First name: Title: Telephone: ( ) Ext. Zip code: Title: Telephone: i Ext. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage this system, or the persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I also certify under penalty of law that I have read, understood, and accepted all terms and conditions of the National Pollutant Discharge Elimination System (NPDES) /State Disposal System (SDS) General Stormwater Permit Construction Activity (MN R100001) that authorizes stormwater discharges associated with the construction site identified on this form. Authorized signature: Date: This Application must be signed by. Corporation: a principal executive officer of at least the level of vice-president or the duly authorized representative or agent of the executive officer if the representative or agent is responsible for the overall operation of the facility that is the subject of the permit application. Partnership or Sole Proprietorship: a general partner or the proprietor. is Municipality, State, Federal or Other Public Agency. principal executive officer or ranking elected official. If you have questions about the administrative details of the permit process go to: http: / /www.pca.state.mn.us /publications /wq- strm2-60i.pdf or call the Minnesota Pollution Control Agency at 651- 296 -6300 or 800 - 657 -3864 and ask for "Construction Stormwater." If you have technical questions, ask for the " Stormwater Policy and Technical Assistance Unit." First name: www.pca.state.mn.us 651 - 296 -6300 • 800 - 657 -3864 TTY 651 - 282 -5332 or 800 - 657 -3864 • Available in alternative formats wq- strm2 -60 • 7120109 Page 3 of 3 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix E — Reporting Spills and Leaks MPCA Handout EPA SWPPP Template, Version 1.1, September 17, 2007 51 � Reporting spills and leaks • • Minnesot P ollution Control A gency Reportable spills should be directed to the Minnesota Duty Officer by calling (651) 649 -5451 or (800) 422 -0798. The duty officer will record all pertinent information and then make the appropriate notifications to the state agencies. c-erl -01 Cleanup fact sheet #1.01 • February 2009 inn. Stat. §115.061, which has been in effect since 1969, describes the duty of people to notify the Minnesota Pollution Control Agency (MPCA) when spills and leaks occur: 115.061— Duty to Notify and Avoid Water Pollution (a) Except as provided in paragraph (b), it is the duty of every person to notify the agency immediately of the discharge, accidental or otherwise, of any substance or material under its control which, if not recovered, may cause pollution of waters of the state, and the responsible person shall recover as rapidly and thoroughly as possible such substance or material and take immediately such other action as may be reasonably possible to minimize or abate pollution of waters of the state caused thereby. (b) Notification is not required under paragraph (a) for a discharge of five gallons or less of petroleum, as defined in section I I5C.02, subdivision 10. This paragraph does not affect the other requirements of paragraph (a). The law provides penalties of up to $10,000 per day for violations. The Minnesota Department of Public Safety, Bureau of Criminal Apprehension, operates a 24 -hour service, establishing a one -call system for all state reporting requirements. Reportable spills should be directed to the Minnesota Duty Officer by calling (651) 649 -5451 or (800) 422 -0798. The duty officer will record all pertinent information and then make the appropriate notifications to the state agencies. Spills that must be reported Report spills that may cause pollution, such as spills of toxic, flammable, corrosive and dangerous industrial chemicals. Also report spills of environmentally damaging materials, including milk, coal, animal parts, batteries, etc. Reportable quantities Minnesota has a reporting threshold of greater than five- gallons for petroleum spills. Spills of any quantity of all other chemicals or materials should be reported. If in doubt, report. Anyone who spills is required to report. EVERY person who has "any substance or material under its control" must report spills and leaks. This includes: • property owners who discover contamination; • individuals, partnerships, companies and corporations; • governmental subdivisions, including officers of these entities; • owners of substances being stored or transported by another company; and • contractors who are in physical control of a discharged substance. Sometimes a fire department, police agency or other local or state agency that responds to a spill or leak chooses Minnesota Pollution Control Agency 520 Lafayette Rd. N., Saint Paul, MN 55155 -4194 • www.pca.state.mn.us 651 - 296 -6300 • 800 - 657 -3864 TTY 651 - 282 -5332 or 800 - 657 -3864 • Available in alternative formats to report the incident to the MPCA. In some circumstances, the entity may be required to report the spill. However, in no case does a report from someone else stand in lieu of your responsibility to report to the MPCA by calling the Minnesota Duty Officer if a substance is under your control. Be aware that there may be other reporting requirements imposed by local ordinances, state or federal law, or permits. Understanding all reporting requirements is the responsibility of those who handle substances which can pollute. It is the responsibility of the spiller to ensure an effective cleanup and proper management of all wastes generated. With the exception of used oil, waste generated from petroleum spills that have been reported and cleaned up immediately are exempt from Minnesota's Hazardous Waste Rules. Waste from used oil spills must be sent to a facility for energy recovery. For more information For more information on spill prevention, cleanup or disposal, call the MPCA at (651) 296 -6300 or (800) 657 -3864 and ask for a member of the Emergency Response Team or go to www.pca.state.mn.us /cleanup /pubs /ertpubs.html on the Internet. • Also, visit the U.S. Environmental Protection Agency site at www.epa.gov /oilspilU for more information. • Reporting spills and leaks • September 2006 Minnesota Foffut'on Control Amy page 2 • • • "We W: � - A - Poll Control A Contents Stop the spill ............ 1 Containment and recovery ...................1 Remediating contaminated soil ...1 For more information ............... 2 c- er4 -02 Cleaning up small petroleum spills Cleanup /Emergency Response 4 -02 • April 2008 etroleum spills of more than five gallons must be reported to the Minnesota Duty Officer by calling (651) 649 -5451 or (800) 422 -0798. This fact sheet provides general guidance for cleanup of small petroleum spills on land. The Minnesota Pollution Control Agency (MPCA) considers small spills to be those of 50 gallons or less. The quantity spilled must be reliably calculated to determine whether it is appropriate to utilize this guidance. Depending on the circumstances and the health, safety and environmental risk, a more stringent cleanup protocol may need to be followed. It is the responsibility of the spiller to ensure an effective cleanup and proper management of all wastes generated. With the exception of used oil, waste generated from petroleum spills that have been reported and cleaned up immediately is exempt from Minnesota's Hazardous Waste Rules. Stop the spill Upon discovery of a petroleum spill, the first step is to stop the spill or leak if this can be done safely. Turn off nozzles or close valves from the leaking container or system. Use a wooden plug, bolt, band or putty on a puncture -type hole. Containment and recovery Contain the spill if it can be done safely. Buckets, pails or kiddie pools can be used to collect flowing liquid from a leaking valve or punctured tank. Soil, sand or granular sorbent can be used to build a berm around the flowing liquid on the ground. State law requires companies to be prepared to respond to spills. Therefore, stocking basic spill - response equipment is expected. Once contained, the liquid must be recovered. If company personnel are trained and can perform these tasks safely, recovery should begin immediately. Otherwise, a contractor may be needed to assist the company. All free liquid should be recovered using the appropriate pumps, vacuum trucks, or sorbent. The recovered liquid product can then be recycled or possibly reused. Other wastes that are generated must be properly managed and disposed. Oil - soaked sorbent can be sent to the following types of facilities for treatment or disposal: municipal waste combustor, asphalt or thermal treatment, land treatment, composting or landfill. For guidance on each, request the Spill debris disposal options fact sheet. Remediating contaminated soil Contaminated soil can be remediated in two ways: either excavate and ship the Minnesota Pollution Control Agency 520 Lafayette Rd. N., Saint Paul, MN 55155 -4194 • www.pca.state.mn.us 651 - 296 -6300 • 800 - 657 -3864 TTY 651 - 282 -5332 or 800 - 657 -3864 • Available in alternative formats soil to a treatment or disposal facility or treat the soil in place. To excavate contaminated soil, remove all soil that has visible staining or petroleum odor. In some instances, a soil sample may need to be collected and analyzed by an environmental laboratory to confirm that an effective cleanup has occurred. When you report the spill, ask the MPCA Emergency Response Team member whether you need to collect a sample. Excavated petroleum- contaminated soil can be sent to the following types of facilities for treatment or disposal: (1) land treatment, (2) composting, (3) asphalt or thermal treatment, or (4) landfill Land treatment, also known as "land farming" or "thin- spreading," involves applying the contaminated soil to native soil, mixing, aerating the soils, and sometimes adding fertilizer to promote biodegradation of the contaminants. For thin- spreading 10 cubic yards or less, follow the guidance in the Thin - spreading small quantities petroleum- contaminated soils fact sheet. If the quantity of soil to be treated is greater than 10 cubic yards, then you must follow the MPCA guidance for land treatment and Minn. R. ch. 7037, Petroleum Contaminated Soil Management. If the soil is to be treated in place, written permission from the landowner must be obtained. The treatment site should not be in a pedestrian walkway. The site should have a slope of less than 6 percent. Surface waters, drinking water wells and sewers should be at least 200 feet away. The affected soil should be disked, bladed or raked into the native soil and periodically thereafter until biodegradation has occurred (usually in one year). Composting is the controlled microbial degradation of petroleum - contaminated soil. This is optimized by constructing the pile in a manner that promotes bacteria and fungi to flourish. For specific guidance, see the Composting of petroleum- contaminated soil fact sheet. Some asphalt plants or similar facilities in Minnesota are permitted to treat petroleum - contaminated soils. This is called "thermal treatment." These plants burn or vaporize the contaminants from the soil and then incorporate the treated soil into asphalt or fill material. The MPCA maintains a list of these permitted facilities (see the Thermal treatment of petroleum- contaminated soil fact sheet). Some municipal and industrial solid waste landfills can accept petroleum - contaminated soil for disposal. Call your local facility for approval and protocols. After the cleanup has been completed, submit a report describing the incident, the material spilled and amount, cleanup steps performed, and measures implemented to prevent the incident from reoccurring. Include diagrams of the affected area, excavation dimensions, and amount and types of wastes generated. Waste disposal documentation should include method of disposal and location. For more information For more information on spill prevention, cleanup and disposal, call the MPCA at (651) 296 -6300 or (800) 657 -3864 and ask for a member of the Emergency Response Team or go to www.pca.state.mn.us /cleanup /pubs /ertpubs.html on the internet. More information is also available on the Web site of the U.S. Environmental Protection Agency at www.epa.gov /oilspill / • • Cleaning up small petroleum spills • April 2008_ nota Polknion Ctsntrrai Rgcgt page 2 a' U • T' s . Pollution Control Agency To report a spill at any time, day or night, call the Minnesota Duty Officer at (651) 649 -5451 or (800) 422 -0798. c- er9 -01 List of State Emergency Response Contractors Cleanup /Emergency Response 9 -01 • February 2010 his fact sheet contains the names of businesses that the State of Minnesota holds contracts with to provide environmental emergency response services. These contractors are defined as either full- service or limited - service, and this refers to the list of tasks that are required under the negotiated contract. Under the terms of these contracts with the State of Minnesota, limited- service contractors may be used for spills of petroleum and nonhazardous materials, but not for spills or releases of hazardous materials or for responses on large bodies of water; instead, full- service emergency response contractors should be used. Contractors may offer more services than outlined in their contract with the state, including hazardous materials response. This list is provided for informational purposes only; it is not an endorsement, and anyone using it is advised to check the capabilities and rates of contractors. • Supply and deliver sorbents (booms, pads, sweeps, pillows, etc.) to responses. • Investigate, contain and recover spills /releases on land, including the excavation of contaminated soils. • Investigate, contain and recover spills /releases to surface waters using containment booms, sorbents, vacuum trucks and pumps. • Investigate and mitigate petroleum vapor and product in sewer systems and utility conduits. • Investigate, contain, sample, transport and manage known and unknown abandoned wastes or mystery spills or releases. • Collect, preserve and transport samples to laboratories for analysis. Follow established sample - collection protocols and methodology. • Collect, assess and analyze air contaminant levels during a chemical fire, tire fire or other fire causing air contaminant concerns. Services provided by full - service contractors Some of the required tasks of a full - service contractor include: • Toll -free, 24 -hour telephone answering. • 24 -hour, statewide response. • Level A, B, C and D responses. • Provide vacuum truck(s). • Design, install, operate and troubleshoot mechanical systems such as carbon filtration systems and groundwater remediation systems. • Arrange for transportation, storage and proper management of wastes generated during an emergency response. • Assist with the management and disposal of wastes generated from terror and natural disaster incidents. • Biomedical and infectious waste containment, transport and disposal. Minnesota Pollution Control Agency 520 Lafayette Rd. N., Saint Paul, MN 55155 -4194 • www.pca.state.mn.us 651 - 296 -6300 • 800 -657 -3864 TTY 651 - 282 -5332 or 800 -657 -3864 • Available in alternative formats Full- service contractors Bay West Environmental 5 Empire Dr. Saint Paul, MN 55103 -1867 (Contact: Spills Supervisor) Office phone: (651) 291 -0456 or (800) 279 -0456 Fax: (651) 291-0099 West Central Environmental Consultants Inc. 14 Green River Rd. P.O. Box 594 Morris, MN 56267 -0594 Contact: Doug Stahman ( stalimandgwces.com ) or Gary Perowitz ( perowitzgwces.com ) Office phone: (800) 422 -8356 24 -hour phone answering: (888) 923 -2778 Fax: (320) 589 -2814 West Central Environmental Consultants Inc. 7871 Hickory St. NE Fridley, MN 55432 Contact: Cory Teff ( cteff2wcec.com ) or Paul Carter (pcartergwces.com) Office phone: (763) 571 -4944 Emergency phone: 952- 980 -3247 Fax: (763) 571 -2267 Services provided by limited - service contractors Some of the required tasks that limited - service contractors provide include: • Investigate, contain, recover and remediate spills /releases, on land, including the excavation of contaminated soils. • Supply, deliver and use sorbents and other supplies to control, minimize and prevent pollution from spills /releases. • Collect, preserve and transport samples to laboratories for analysis. Follow appropriate established protocols and methodology. • Contain and recover spills /releases to surface waters using sorbents. • Arrange for vacuum trucks and pumps to recover spills, as necessary. • Arrange for transportation, storage and management of wastes generated during an emergency response. • Assist with the management and disposal of wastes generated from terror and natural disaster incidents. 0 Limited - service contractors: Beltrami Industrial Services, Inc. Route 1, Box 2506 Solway, MN 56678 Contact: Randy Forseth 24 -hour phone answering: (218) 751 -7537 Fax: (218) 751 -0236 E -mail: belind @paulbunyan.net Environmental Troubleshooters, Inc. 3825 Grand Ave. Duluth, MN 55807 Contact: Craig Wilson Office phone: (218) 722 -6013 or (800) 470 -3536 Fax: (218) 722 -6319 E -mail: cwlsong environmentaltroubleshooters .com Eveleth Branch Office: Phone (218) 744 -0128 during regular business hours. Phone (218) 722 -6013 or (800) 470 -3536 after normal business hours. Midamerica Technical & Environmental Services, Inc. 6989 N. 55th St., Suite C2 Oakdale, MN 55128 Contact: Jim Harms Office phone: (651) 779 -1900 or (888) 314 -2042 24 -hour phone answering: (888) 314 -2042 Fax: (651) 779 -9786 E -mail: jimgmidamericaenv.com For more information on spill reporting, prevention, cleanup and disposal, call the Minnesota Pollution Control Agency at (651) 296 -6300 or (800) 657 -3864 and ask for a member of the Emergency Response Team or go to www.pca.state.mn.us /cleanup /pubs /ertpubs.html More information is also available from the U.S. Environmental Protection Agency at www.epa. ova /oilsl2ill / List of State Emergency Response Contractors • c- er9 -01 • February 2010 page 2 • �° AI�l�S��H F�ttutic�r� ` Control Age" Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix F — SVWPPP Amendment Log n u 0 EPA SWPPP Template, Version 1. 1, September 17, 2007 52 a° a o I E o 0 O a � a 3 Q 3 E i i c J 3 � l i Q CL � � C �C C U) N X V d w � E U Z c N Q �a a a • Q a` ai .0 c = a O 0 N N O rA N cd H a W Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • • Appendix G — Subcontractors Certifications /Agreements EPA SWPPP Template, Version 1. 1, September 17, 2007 53 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix G — Subcontractor Certifications /Agreements SUBCONTRACTOR CERTIFICATION STORM WATER POLLUTION PREVENTION PLAN Project Number: Project Title: Operator(s): As a subcontractor, you are required to comply with the Storm water Pollution Prevention Plan (SWPPP) for any work that you perform on -site. Any person or group who violates any condition of the SWPPP may be subject to substantial penalties or loss of contract. You are encouraged to advise each of your employees working on this project of the requirements of the SWPPP. A copy of the SWPPP is available for your review at the office trailer. Each subcontractor engaged in activities at the construction site that could impact storm water must be identified and sign the following certification statement: • 1 certify under the penalty of law that I have read and understand the terms and conditions of the SWPPP for the above - designated project and agree to follow the BMPs and practices described in the SWPPP. This certification is hereby signed in reference to the above named project: Company: Address: Telephone Number: Type of construction service to be provided: Signature: Title: • Date: EPA SWPPP Template, Version 1.1, September 17, 2007 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix H — Grading and Stabilization Activities Log C] EPA SWPPP Template, Version 1. 1, September 17, 2007 a° �o N �cd C a� 00 P. o �a 0 a Y O Y 1�1 • 0) O Cl) U Q O cu N (u -0--o U) Ca 0) L W O 0 � > N I Y Y = J V X w 6 £ O Z U C v a CL � oa Q a` v r- 0 0 N Con a� 0 a� cd H w Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix I — Training Log 0 0 EPA SWPPP Template, Version 1. 1, September 17, 2007 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 • Appendix I —SWPPP Training Log Storm water Pollution Prevention Training Log Project Name: Project Location: Instructor's Name(s): Instructor's Title(s): Course Location: Course Length (hours): Storm water Training Topic: (check as appropriate) Date: • ❑ Erosion Control BMPs ❑ Emergency Procedures ❑ Sediment Control BMPs ❑ Good Housekeeping BMPs ❑ Non -Storm water BMPs • Specific Training Objective: Attendee Roster: (attach additional pages as necessary) No. Name of Attendee Company 1 2 3 4 5 6 7 8 9 10 EPA SWPPP Template, Version 1.1, September 17, 2007 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 Appendix J — Delegation of Authority Form 0 EPA SWPPP Template, Version 1. 1, September 17, 2007 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 0 Appendix J — Delegation of Authority Form Delegation of Authority I, (name), hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit, at the LAKEVIEW construction site. The designee is authorized to sign any reports, storm water pollution prevention plans and all other documents required by the permit. (name of person or position) (company) (address) (city, state, zip) (phone) By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in MPCA General Storm water Permit(MN R100001), and that the designee above meets the definition of a "duly authorized representative" as set forth in MPCA General Storm water Permit(MN R10000 I). • I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name: Company: Title: Signature: Date: .7 EPA SWPPP Template, Version 1. 1, September 17, 2007 Draft Stormwater Pollution Prevention Plan (SWPPP) Lyman Site - October 11, 2010 Appendix K — Additional Information 0 EPA SWPPP Template, Version 1. 1, September 17, 2007