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CAS-17_BLUFF CREEK BOULEVARD ROUNDABOUT0 CITY OF CIIANNSEN 7700 Market Boulevard PO Boz 147 Chanhassen. MN 55317 Administration Phone: 952.227.1100 Fax: 952.227.1110 Building Inspections Phone: 952.227.1180 Fax: 952.227.1190 Engineering Phone: 952.227.1160 Fax: 952.227.1170 Finance Phone: 952.227.1140 Fax: 952.227-1110 Park 8 Recreation Phone: 952.227.1120 Fax: 952.227.1110 Recreation Center 2310 Coulter Boulevard Phone: 952.227.1400 Fax: 952.227.1404 Planning & Natural Resources Phone: 952.227.1130 Fax: 952.227.1110 Public Works 1591 Park Road Phone: 952.227.1300 Fax: 952.227.1310 Senior Center Phone: 952.227.1125 Fax 952.227.1110 Web Site www.ci.chanhassen.mn.us MEMORANDUM TO: Todd Gerhardt, City Manager FROM: Lori Haak, Water Resources Coordinator DATE: June 12, 2006 O<1- SUBJ: Bluff Creek Boulevard Wetland Alteration Permit Planning Case 06-17 EXECUTIVE SUMMARY Request for a Wetland Alteration Permit for filling 0.72 acres of Type 1 wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA area. ACTION REQUIRED City Council approval of wetland alteration permits requires a simple majority vote of City Council. PLANNING COMMISSION SUMMARY The Planning Commission held a public hearing on May 16, 2006 to review the wetland alteration permit application. The Planning Commission voted 4 to 0 to recommend approval of the Wetland Alteration Permit. The Planning Commission minutes are item la of the June 12, 2006 City Council agenda. RECOMMENDATION Staff and the Planning Commission recommend the City Council adopt the motion to approve the Wetland Alteration Permit as specified beginning on page 4 of the staff report dated May 16, 2006. ATTACHMENTS 1. Planning Commission Staff Report, dated May 16, 2006. gAplan\2006 planning cases\06-17 bluff creek boulevard roundabout wap\ezecutive summary.doc The City of Chanhassen • A growing community with clean lakes, quality schools. a charming downtown, thriving businesses, winding trails, and beautiful parks. A gnat place to live, work, and play. 0 CITY OF CHANHASSEN STAFF REPORT PC DATE: May 16, 2006 CC DATE: June 12, 2006 REVIEW DEADLINE: July 3, 2006 CASE #: 06-17 BY: LH, DA PROPOSAL: Bluff Creek Boulevard Wetland Alteration Permit for- _3005 rar.c A A _e, Aletland Basins 5, 6 -an d 9 - LOCATION: NE'/a of Section 27 and SE'/a of Section 22, Township 116N, Range 23 W. APPLICANT: City of Chanhassen c/o Paul Oehme 7700 Market Boulevard PO Box 147 PRESENT ZONING: PUD -R, RLM 2020 LAND USE PLAN: Residential Low Density, Residential Medium Density, Office Industrial and Open Space ACREAGE: 0.72 DENSITY: n/a SUMMARY OF REQUEST: Request for a Wetland Alteration Permit for filling 0.72 acres of Type 1 wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA area. LEVEL OF CITY DISCRETION IN DECISION-MAKING: The City's discretion in approving or denying a wetland alteration permit is limited to whether or not the proposal meets the standards outlined in the Zoning Ordinance. If it meets these standards, the City must approve the wetland alteration permit. This is a quasi-judicial decision. D Location Map Bluff Creek Boulevard Roundabout Wetland Alteration Permit Planning Case No. 06-17 City of Chanhassen 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 2 of 4 BACKGROUND As part of the 2005 MUSA expansion area, the City of Chanhassen will install a public roadway to connect Audubon Road and Powers Boulevard. As part of this public infrastructure, the alignment of the roadway impacts three wetlands as part of the public infrastructure installation. Two of the wetlands are impacted during the construction of the East/West Collector road and wetland basin 8 is impacted by the placement of the roundabout on the collector road. The City of Chanhassen as the LGU needs to issue a wetland alteration permit to approve the impact and mitigation to Basins 5, 6 and 8. The original submittal included the impact summary and mitigation plan for Basin 8. An addendum dated May 5, 2006 identifies additional impacts to Basins 5 and 6 and proposed mitigation. The mitigation plan is currently being submitted to ensure that the wetland replacement plan is approved prior to construction. WETLANDS Existing Wetlands Basin 5 is an 8.95 acre, Type 4 wetland located in the southeast quarter of the southeast quarter of Section 22. The basin is dominated by reed canary grass and clover. Basin 6 is a 1.69 acre, Type 3 wetland located in the southeast quarter of the southeast quarter of Section 22. The basin is dominated by reed canary grass and black willow. Basin 8 is a Type 1 wetland located in the NE 1/s of section 27, East of Audubon Road and south of Lyman Boulevard. The basin is dominated by reed canary grass transitioning to smartweed, ragweed and eventually soybeans in the recently harvested area. Wetland Impacts The applicant submitted an application for 0.56 acres of wetland fill in Basin 8. The addendum proposes additional impacts to Basins 5 and 6. The total additional impacts indicated on the addendum (Attachment #3) are 0.16 acres. The applicant is proposing to replace the impacts to the Type 1 wetlands by creating 0.32 acres of Type 1 mitigation connected to Basin 5 and the proposed mitigation area for Basin 8. The proposed project proposes filling within three wetland basins within the project area. Proposed wetland impacts are as follows. Basin 5: 0.12 acres of Type 1 wetland Basin 6: 0.04 acres of Type 1 wetland Basin 8: 0.56 acres of Type 1 wetland Wetland Impacts: 0.72 acres of Type 1 Wetland Total Wetland Mitigation Required: 1.44 acres (NWC and PVC) 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 3 of 4 Wetland Mitigation Wetland replacement is required at a 2 to 1 ratio. The replacement of wetland will be accomplished by creating 1.12 acres (48,786 square feet) of new Type 1 wetland connected to Basin 5 within the 2005 MUSA area. Additionally, the applicant's engineer is currently in the process of drawing plans to show the additional 0.32 acres of replacement wetland in conjunction with the 1.12 acres that were proposed in the original submittal. The applicant must provide plans for the mitigation of the additional 0.32 acres of wetland to City staff for review and approval prior to wetland impacts occurring. The topography will be blended to match the existing grade of Basin 5. After the new wetland credit and public value credit is excavated the area will be seeded with a BWSR-2 seed mix and the 10 foot buffer at the wetland setback will be seeded with a BWSR-5 seed mix to assist with slope stabilization. A five year monitoring plan as required by the Wetland Conservation Act has been developed. A report will be submitted annually for 5 years to ensure the success of the created wetland. ANALYSIS Initially, the applicant had considered additional mitigation sites. Other mitigation sites were not determined suitable due to their lack of hydrology, proximity to proposed developments and location of proposed storm water ponds by developers. Sequencing options considered were: 1) Wetland avoidance option This option was considered during sequencing however, total wetland avoidance was not considered feasible to accommodate property owners in the developing parcels while minimizing wetland and floodplain impacts. 2) No Build option The no -build option would avoid direct impacts to wetland basin5, 6 and 8 however, this option would fail to allow the City of Chanhassen to meet it's development goals and fails to make use of available space in Chanhassen. The no -build option was dismissed as not -feasible or prudent. In addition to the avoidance and no -build option the applicant considered comments received from commenting agencies on the slopes adjacent to the proposed mitigation areas. The comments indicated that the slopes should be reduced if at all possible and alternate mitigation areas shall be considered if needed. In investigating the plans which identified the 3:1 slopes it appears that reducing the slopes is not an acceptable option due to the buried sanitary line at the top of the slope. Alternate sites were not considered due to reasons previously addressed. Erosion Control All exposed soils must be temporarily stabilized and seeded within the 7, 14 and 21 day time frames, depending upon slopes. Erosion control blanket should be used in concentrated flow areas and for slopes of 3:1. All remaining areas shall be mulched and seeded to control erosion. 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 4 of 4 Other Agencies The applicant shall obtain a permit from the Minnesota Pollution Control Agency and comply with their conditions of approval. Staff meammends and the Planning Commission recommend the City Council adopt the following motion: "The City Council approves Wetland Alteration Permit 06-17 subject to the following conditions: 1. Wetland replacement shall occur in a manner consistent with the Minnesota Wetland Conservation Act (MR 8420) at a ratio of 2:1. 2. The applicant shall provide plans for the mitigation of the additional 0.32 acres of wetland to City staff for review and approval prior to wetland impacts occurring. 3. All exposed soils from temporary haul routes, exposed slopes above the normal water level (NWQ and adjacent areas to the project shall be temporarily stabilized and seeded within the 7, 14 and 21 day time frames, depending upon slopes. Any concentrated flow areas shall receive temporary protection. 4. Erosion control blanket shall be used in concentrated flow areas and for slopes of 3:1. All remaining areas shall be mulched and seeded to control erosion. 5. The applicant shall apply for NPDES Phase II Construction Permit and comply with their conditions of approval." ATTACHMENTS 1. Findings of Fact. 2. Affidavit of Mailing. 3. Addendum to wetland mitigation plan dated May 5, 2006. 4. Drawing of additional wetland impacts to Basins 5 and 6. 5. 2005 MUSA Area Mitigation Plan for Basin 8 by Houston Engineering (selected pages). gAplant2006 planning cases\06-17 bluff creek boulevard roundabout wap\06-17 staff report pc.doc CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: The application of the City of Chanhassen Planning Case No. 06-17 On May 16, 2006, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of the City of Chanhassen for a wetland alteration permit for filling 0.72 acres of wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA Area. The Planning Commission conducted a public hearing on the proposed development which was preceded by published and mailed notice. The Planning Commission heard testimony from all interested persons wishing to speak. The Planning Commission now makes the following: FINDINGS OF FACT 1) The properties are currently zoned RR (Rural Residential). 2) The properties are guided by the Land Use Plan for Residential Low Density, Residential Medium Density, Office/Industrial and Parks/Open Space. 3) The properties are located in Chanhassen, Minnesota (Sections 22 and 27, Township 116 North, Range 23 West), Carver County. 4) Three wetlands on the subject properties are proposed to be impacted. 5) The total amount of wetland impact proposed is 0.72 acres. 6) The replacement of wetland at a 2:1 ratio will be accomplished through the creation of wetlands on the subject properties. 7) Section 20-404 of the City Code stipulates that there should be no net loss of wetlands. Finding: The project proposes wetland replacement through the construction of wetlands on-site therefore there will be no net loss of wetlands. 8) Section 20-407 of the City Code requires an applicant for a wetland alteration permit must demonstrate compliance with the sequencing requirements set forth therein. Finding: The proposed project is compliant with the sequencing requirements. 9) Section 20-408 of the City Code requires a wetland alteration permit for the construction of new streets within wetlands. Finding: Upon receipt of a wetland alteration permit, the project will be in compliance with this requirement. 10) The planning report for Planning Case #06-17, dated May 16, 2006, prepared by Lori Haak is incorporated herein. RECOMMENDATION The Planning Commission recommends that the City Council approve the Wetland Alteration Permit for Planning Case #06-17 for the filling of 0.72 acres of wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA Area - BLUFF -'�I :• 'a'• :• ADOPTED by the Chanhassen Planning Commission this 16"' day of May, 2006. CHANHASSEN PLANNING W Its Chairman GAPLAN\2006 Planning Cases\06-17 Bluff Creek Boulevard Roundabout W APfFindings of Fact PC.doc CITY OF CHANHASSEN AFFIDAVIT OF MAILING NOTICE STATE OF MINNESOTA) ) ss. COUNTY OF CARVER ) I, Karen J. Engelhardt, being first duly sworn, on oath deposes that she is and was on May 4, 2006, the duly qualified and acting Deputy Clerk of the City of Chanhassen, Minnesota; that on said date she caused to be mailed a copy of the attached notice of Public Hearing for Bluff Creek Boulevard Roundabout Wetland Alteration Permit – Planning Case 06-17 to the persons named on attached Exhibit "A", by enclosing a copy of said notice in an envelope addressed to such owner, and depositing the envelopes addressed to all such owners in the United States mail with postage fully prepaid thereon; that the names and addresses of such owners were those appearing as such by the records of the County Treasurer, Carver County, Minnesota, and by other appropriate records. Subscribed and sworn to before me this —+ "day of MIL4 2006. Notary Kar J. Engelh rdt Deputy erk JW�KIM T. MEUWISSEN ?i Notary Public -Minnesota 9,"",:� " My commission Expires Jan 31, 2010 Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, May 16, 2006 at 7:00 p.m. This hearing may not start until later in the evening, depending on the order of theagenda. Location: City Hall Council Chambers 7700 Market Blvd. Request for a Wetland Alteration Permit for the construction of Proposal: a roundabout in conjunction with the construction of Bluff Creek Boulevard — Planning Case 06-17 Applicant: City of Chanhassen Property East of Audubon Road, South of Lyman Blvd. and North of Location: Pioneer Trail. Location: A location map Is on the reverse side of this notice. The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the public hearing through the following steps: What Happens W Wthe 1. Staff will give an overview of the proposed project. at Meeting: 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please visit the City's projects web page at: www.ci.chanhassen.mn.us/sery/l)lan/06-17.html. If you wish to talk to someone about this project, please contact Lori Haak by email at Ihaak@ci.chanhassen.mn.us or by phone at 952- Questions & 227-1135. If you choose to submit written comments, it is Comments: helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this Item will be available online on the project web site listed above the Thursday prior to the Planning Commission meeting. City Review Procedure; • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Wetland Alterations, Rezonings, Comprehensive Plan Amendments and Code Amendments require a public heading before the Planning Commission. City ordinances require all property within 500 feet of the subject site to be notified of the application in writing. Any interested party is invited to attend the meeting. • Staff prepares a report on the subject application that includes all pertinent information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation. The item will be opened for the public to speak about the proposal as a part of the hearing process. The Commission will close the public hearing and discuss the item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commercialndustrial. • Minnesota State Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an item through the process should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokesperson/representative is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal. Staff is also available to review the project with any interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included in the report to the City Council. If you wish to have something to be included in the report, lease contact the Planning Staff person named on the notification. Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, May 16, 2006 at 7:00 p.m. This hearing may not start until later in the evenin depending on the order of theagenda. Location: City Hall Council Chambers 7700 Market Blvd. Request for a Wetland Alteration Permit for the construction of Proposal: a roundabout in conjunction with the construction of Bluff Creek Boulevard — Planning Case 06-17 Applicant: City of Chanhassen East of Audubon Road, South of Lyman Blvd. and North of Property Pioneer Trail. Location: A location map Is on the reverse side of this notice. The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the public hearing through the following steps: What Happens W Wthe 1. Staff will give an overview of the proposed project. at Meeting: 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please visit the City s projects web page at: www.ci.chanhassen.mn.us/sery/plan/06-17.htmi. If you wish to talk to someone about this project, please contact Lori Haak by email at IhaakOci.chanhassen.mn.us or by phone at 952 - Questions & 227-1135. If you choose to submit written comments, it is Comments: helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this item will be available online on the project web site listed above the Thursday prior to the Planning Commission meeting. City Review Procedure: • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Wetland Alterations, Rezonings, Comprehensive Pian Amendments and Code Amendments require a public hearing before the Planning Commission. City ordinances require all property within 500 feet of the subject site to be notified of the application in writing. Any interested party is invited to attend the meeting. • Staff prepares a report on the subject application that includes all pertinent information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation. The item will be opened for the public to speak about the proposal as a part of the hearing process, The Commission will close the public hearing and discuss the item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commerciavindustrial. • Minnesota State Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an item through the process should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokespersorVrepresentative is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal. Staff is also available to review the project with any interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included In the report to the City Council. If you wish to have something to be included in the report, lease contact the Planning Staff person named on the notification. This map is neither a legally recorded map nor a survey and is not intended to ba used as one. This map is a core ilaban of records, information and data located in various city, county, state and federal offices and Other sources regarding the area shown and is to be used for reference purposes only. The City does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and the City does not represent that the GIS Data can be used for navigational, trazking or any other purpose requiring enacting measurement of distance or direction or precision in the depchon Of geographic features. g errors or discrepancies are found please contact 952-227-1107. The preceding dlsclalmer Is provided pursuant to Minnesota Statutes §466.03. Subd. 21 (2000), and the user of this map acknowledges that the City shall not be liable fou any damages, and evressly waves all blains, and agrees to defend, indemnify, and hdd harrtiess Me City from any and all clairm brought by User. Its employees or agents, or Mind parties which arise Out W the users axes or use of data provided. L This map is neither a legally recorded map. a survey and is not intended to be used as One. This map is a compilation of records, information and dffia located m various cM• county, state and federal Offices and other sources regarding Me area sham, and is t0 be used t0/ reference purposes Only. The City roes not warrant that the Geographic Information System (GIS) Data used to prepare this map are error tree, and the City does not represent that the GIS Data can be used for navigational. tracking or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. H errors or discrepancies are found pease contact 952-2274107 The preceding disclaimer is provided pursuant to Minnesota Statutes §466.03, Subd. 21 (2000), and Me user of this map acknow edges that the City shall nM be liable fa any damages. and expressly waves all dams, and agrees to defend, indemnify, and hold harmass Me City from any and all chins brought by User, its employees or agents, or third parties which arise out of the users access or use W data provided. GMAC MODEL HOME FINANCE, INC PETERSON-JACQUES 6802 PARAGON PLACE #350 FARM LAND CO RICHMOND VA 23230-1650 15900 FLYING CLOUD DR EDEN PRAIRIE, MN 55347-4047 Public Hearing Notification Area (500 feet) Bluff Creek Boulevard Roundabout Wetland Alteration Permit Planning Case No. 06-17 City of Chanhassen ISubiect Site IRMO]() a (External correspondence) Date: 5-5-2006 Houston Engineering, Inc. 10900 73f° Ave- N , Ste. 106 Ph. (763) 493-4522 Maple Grove, MN 55369 Fax (763) 493-5572 From: Sara Beth Scadlock, Houston Engineering Chadd Larson, Kimley-Horn and Associates To: Don Asleson, City of Chanhassen Subject: Additional Wetland Impacts Description: It has come to the attention of IGmley-Horn and Associates that there will be two small additional areas of wetland impact in addition to the 0.56 acres of Type 1 wetland in Basin 8 These additional areas of impacts are due to the 3:1 slope from Bluff Creek Boulevard. The wetland impacts are 0.12 acres in Basin 5 and 0.04 acres in Basin 6 (See attached drawing for details). These impacts are for the purpose of constructing public infrastructure for the City of Chanhassen's 2005 MUSA expansion area (City Project No. 06-05). An application for impacts and a mitigation plan was submitted to the LGU, the City of Chanhassen. Wetland mitigation: Proposed onsite wetland mitigation includes the construction of a new wetland area adjacent to existing wetland area. The area of proposed onsite wetland creation is located on the east side of Bluff Creek adjacent to the east boundary of Basin 5. The wetland creation will result in a total of 1.12 acres (original) 0.32 acres (additional) for a total of 1.44 acres of New Wetland Credit (NWC) on site. Houston Engineering is currently in the process of drawing plans to show the additional 0 32 acres of replacement wetland in conjunction to the 1.12 acres that that were discussed in the wetland mitigation plan. These revised drawings will be submitted to the City for review. Summary of Impacts: Original Impacts Basin 8 0 56 acres 2:1 Replacement 1.12 acres Additional Impacts Basin 5 0.12 acres Basin 6 0 04 acres 2'1 Replacement 0.32 acres Total Impacts 0 72 acres Total Replacement 1.44 acres 0 Page 1 of 1 3� HMOa I aE aywaz p[s647 � O C S2 � o aw o PROJECT SUMMARY BASIN 8 WETLAND MITIGATION PLAN Applicant: City of Chanhassen, Paul Oehme, PE Agent: Kimley-Horn and Associates, Inc., Chadd Larson, PE Suite 345N, 2550 University Ave. W St. Paul, MN 55114 Reportby: Houston Engineering, Inc., Sara Beth Scadfock Suite 106, 10900 73rd Ave. N Maple Grove, MN 55369 Site Location: South of Lyman Blvd. and East of Audubon Road in the City of Chanhassen, 2005 MUSA Area, T1 16N, R23W, Section 27, Carver County WCA LGU: City of Chanhassen Date: April, 2006 Description: The City of Chanhassen proposes to impact 0.56 acres of Type 1 wetland, Basin 8, for the purpose of constructing public infrastructure for the City of Chanhassen's 2005 MUSA expansion area (City Project No. 06-05). Wetland mitigation: Proposed onsite wetland mitigation includes the construction of a new wetland area adjacent to existing wetland area. The area of proposed onsite wetland creation is located on the east side of Bluff Creek adjacent to the east boundary of Basin 5. The wetland creation will result in 1.12 acres of New Wetland Credit (NWC) on site. April 2006 —Basin 8 Mitigation Plan Basin 8 Wetland Mitigation Plan I. INTRODUCTION The City of Chanhassen is proposing to construct infrastructure associated with their 2005 MUSA expansion area (City Project No. 06-05). This site, partially agricultural land, is located south of Lyman Blvd and east of Audubon Road in the City of Chanhassen, and is in the Riley Purgatory Bluff Creek Watershed District. T116N, R23W, Sec. 22. Carver County, Minnesota (Figure 1). This public infrastructure project is proposed for the purpose of meeting the needs of future development as a part of the City of Chanhassen's 2005 MUSA area expansion. As a part of the project development an Alternative Urban Area Review (AUAR) was completed for the entire project area. This AUAR identified the need for Bluff Creek Boulevard to travel through the project area and intersect with Audubon Road to the west and Powers Boulevard to the east. In addition, the AUAR identified the need for a south connector road to connect Bluff Creek Boulevard to Pioneer Trail to accommodate future traffic demands. One wetland (Basin 8) was identified and delineated for this section of the project on November 1, 2005. Previous delineations on this site for this project by Houston Engineering include Basins 1-6 which were delineated in a previous report presented to the City of Chanhassen on May 26, 2005 and Basin 7 delineated in a previous report presented to the City of Chanhassen on October 28, 2005. Figure 2 shows all the existing wetlands delineated by Houston Engineering for this project (Basins 1-8) and Figure 3 is a detailed delineation map of Basin 8. A full wetland delineation report including NWI maps, soils maps, and data sheets for Basin 8 is attached (Attachment A). Other wetlands associated with other portions of the MUSA area expansion were delineated by other consultants and are not discussed in this report. The infrastructure project addressed in this report would impact a total of 0.56 acres of wetland (Figure 4). This wetland was classified as a Type 1. Using the Cowardin system April 2006 — Basin 8 Mitigation Plan 2 the wetland is a palustrine system with emergent vegetation that has a seasonally flooded regime and is partially drained (PEMCd). The following pages represent the sequencing discussion and describe the proposed wetland mitigation plan of expansion of Basin 5 in more detail. Figure 5 and 6 show the proposed on-site mitigation area and grading plan. H. SEQUENCING DISCUSSION The following section discusses wetland avoidance, impact, minimisation, impact reduction and replacement in compliance with Minnesota Wetland Conservation (WCA) requirements. This sequencing discussion includes a summary of alternatives that were considered and changes that were made to the development plan to minimize wetland impacts. All avoidance and minimization options considered met the following goals for the development. • Provide for sufficient residential housing units to compensate for infrastructure expenses (roads, utilities, ponds, etc.) construction costs, and land costs. • Provide safe access to the site consistent with City planning. • Minimize direct, indirect, and long-term impacts to on-site wetlands and other natural resources on site. The following alternatives were evaluated within the criteria and constraints described above. Wetland Avoidance Using WCA guidelines, the wetland avoidance alternatives considered and evaluated included the no -build and alternate project designs that avoid all wetland impacts. Alternative Project Designs The proposed Bluff Creek Boulevard roadway alignment was chosen from numerous alternatives through multiple meetings with adjacent property owners (Attachment B), developers, and the City. The wetland, Basin 8, that is impacted by the construction of Bluff Creek Boulevard is located at the intersection with the future south connector roadway to Pioneer Trail. The location of this intersection was determined based on input from adjacent property owners and evaluating the best design alternatives based on the proposed roadway alignment and profile. This will be a roundabout intersection April 2006 — Basin 8 Mitigation Plan 3 which will enhance the overall roadway. The current roadway alignment minimizes flood plain and wetland impacts. Alternative project designs that avoid wetland impacts and allow the applicant to effectively utilize buildable upland areas of the site are not feasible. Other intersection locations were evaluated however the current location was selected based on the desire to accommodate both adjacent properties owners' site development plans and minimize the disturbance to other wetlands and natural land features. A conventional tee intersection was considered as an option however there was strong support to enhance the roadway with a roundabout intersection, which also played a role in the intersection location determination. No -Build Alternative The no -build alternative would avoid direct impacts to Basin 8, but would not allow the City of Chanhassen to utilize the surrounding properties as identified in the AUAR. The City of Chanhassen Comprehensive Plan indicates that a residential development would be an appropriate use for the surrounding properties given the access to existing roads, other developments in the area and planned future land uses. Single family home development is compatible with adjacent land use. Abandoning the proposed project fails to meet the project goals of the City of Chanhassen and does not make use of available space within the City. Logistically, the development of this project represents safe and efficient use of available property. For those reasons the no -build alternative was not considered feasible or prudent and was rejected. It was determined that practical and feasible alterative project designs that avoid all direct impacts to wetland areas are not present within the scope of the development, project goals, and site constraints. Wetland Impacts The proposed project plan (Figure 4) attempts to balance efficient land use and minimise wetland and other environmental impacts during and after construction of the proposed project. Wetland Basin 8 was identified for this project (Figures 2 and 3). Wetland April 2006 — Basin 8 Mitigation Plan 4 ' impacts, which are confined to only Basin 8, are necessary for construction. Impacts ' total 24,393 sq ft (0.56 acres). ' Wetland Impact Rectification No temporary impacts are proposed with this plan. Impact rectification does not apply. ' Summary of Unavoidable Impacts The proposed plan represents a reasonable effort to accommodate the desired development while minimizing wetland impacts, and replacing unavoidable impacts ' where appropriate. The proposed plan results in 0.56 acres of unavoidable fill. Impacts to wetlands have been *minimized to the extent possible within the context of project ' goals. The wetland impact area is dominated by reed canary grass. ' III. WETLAND MITIGATION PLAN ' Replacement Requirement Proposed direct wetland impacts involve filling 24,393 sq ft (0.56 acres) of Basin 8 for a roadway (Figure 4). The City of Chanhassen and the WCA wetland rules require wetland replacement at a 2:1 ratio. Wetland mitigation areas will be constructed by excavation ' down to elevations equal to the adjacent existing wetland selected for an appropriate mitigation area which is Basin 5. Table 1— Impact and Mitigation Summary Proposed Welland Impact - Basin 8 (Type 1) Sq Ft Acres ' 24,393 0.56 2:1 Replacement Ratio Sq Ft Acres 48,786 e 1.12 Onsite New Wetland Creation (sq ft) - Basin 5 (Type 1) ' Sq Ft Acres 48,486 1.12 ' April 2006 — Basin 8 Mitigation Plan 5 On -Site N itieation Of the several sites considered and after discussions with other developers working on the project and the City of Chanhassen staff the proposed onsite wetland mitigation area will be excavated from upland adjacent to Basin 5 (Figures 5 and 6). Excavation using heavy and small equipment will expand the wetland area. Runoff from backyards is planned to enter the wetland basins after sediments and nutrients have been removed by the upland buffer areas. Buffer areas are designed between the proposed bike path and the created wetland area. The wetland creation area will be excavated to match the existing elevation of Basin 5 and graded to blend into the existing topography of the site. This will improve the success for wetland hydrology in the created wetland area. A herbicide will be applied to the soils and will be prepared for seeding of wetland vegetation. After final grading the replacement wetland will be seeded with BWSR seed mix No. 2 or equivalent at a minimum suggested rate of 8 lbs/acre and a 10 foot buffer area will be seeded with BWSR seed mix No. 5 to assist with slope stabilization and protect the created wetland from upland species encroachment (Attachment Q. Seeding will be according to specifications with clean mulch tacked to the ground. The wetland is expected to develop to the 871 contour and will receive hydrology from the seasonal flooding of Bluff Creek as well as some groundwater and surface water influences. See wetland mitigation drawings (Figures 5 and 6) for grading details. The wetland will be maintained as needed and as suggested in Attachment D. Other proposed onsite mitigation areas were eliminated due to their lack of hydrology, proximity to the proposed developments, and locations of proposed stormwater ponds by other developers. April 2006 - Basin 8 Mitigation Plan ' Monitorine Plan Requirements for monitoring mitigation wetlands as described in WCA will be followed. The WCA rules require that an annual report be submitted for 5 years to ensure the success of the created wetland areas. The report must contain a description of the project ' location, size, current wetland type and desired wetland type; a comparison of the as-built specifications versus the design specifications; hydrology measurements; plant ' communities observed; and color photographs of the project area. 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Lori Haak presented the staff report on this item. McDonald: Kurt, any questions? Papke: What actually is the mitigation action here? Are you going to dredge? Are you going to plant? Can you describe what actions you'll be taking in the mitigation area? Haak: Absolutely. The applicant is proposing, and actually these cross sections show it a little bit. The existing grade is the solid, or the, actually it's a little hard to see here. There's actually removal of some material. What I've drawn in in blue in those two cross sections is the finished grade of the wetland, and it's very common in wetland mitigation to basically just excavate out an additional area adjacent to existing wetland. It really helps the long term viability of the wetland because a 1 acre wetland isn't really that large if it was isolated in it's own little area so yes, it would be the excavation of some material. In this case it's a couple feet of material, and then there is some seeding that goes on with wetland mixes to ensure that the plants that are established are good plants. In addition there's a 5 year monitoring period that's required for all mitigation areas created within the city, and that's actually a state requirement. So these will be monitored to make sure that they're viable wetlands before they're signed off on by the city. Papke: So just to summarize, you know in my own words. You're basically going in with a backhoe and take out part of the bank and just make it a little bit wider is the bottom line. Haak: Correct. Papke: And then put some seeds in there and hopefully something will come up. Haak: Yes. Aanenson: Can I just add one other thing to that. When we looked at the Preserve site, this was a site that was identified as wetland replacement on the Preserve subdivision site, and some of the comments we got, because ... by putting the sewer line through that area, so this is backing up some of...coming up against that sewer line itself so actually ... so that was incorporated in the Preserve plan ... but this will go onto the Degler property. Papke: Could you point out where the proposed trail is in relationship to this? So will this improve the sight lines of the trail, if you will? Haak: I'm actually now certain where the, I've drawn it in in yellow here, which is what they're showing on the plan in the mitigation plan. Aanenson: The sewer line. 46 SCANNED Planning Commission Meeting —May 16, 2006 Hank: Right, which is, and the sewer line goes like this. So actually it will be nice along the view shed of that trail. McDonald: Okay. Debbie, do you have any questions? No? Keefe: I just have one question in regards to, the Basin 5 is a Type 4 basin. Basin 6 is a Type 3 basin. You have a Type 1 and then they're all going to be Type 1. Haak: I knew that somebody was going to ask that. Keefe: Without getting into too much detail, Haak: That's alright. The edges of the wetlands are different than the middle. And when you type the entire basin, you type the deepest part. So a Type 4 is a deep wetland. Open water, you know cattails around the edges, but then when you go up towards the side, it is classified as a different type of wetland. Because it's a little bit drier, it doesn't flood as often. It doesn't have standing water. Keefe: Okay. So we're taking Basin 8, which is a Type 1, right? That's the one we're taking out, correct? Or filling. Haak: Right. Keefe: Which is an open water. Haak: Type 1, yes. Type 1 is not open water. Keefe: Okay. Type 1 is? Haak: Is more of a meadow. A wet meadow. Keefe: Okay. Alright. Haak: Yep, as the number goes up it gets wetter. Up to 5 and then it changes to water. Keefe: Okay, so we're taking out one that's virtually a meadow. Haak: Correct. Keefe: And we're placing meadow around ones that are, have more open water potential? Haak: Correct. McDonald: I have no finther questions. I guess in this particular case you're also the applicant so there's nobody else to bring up. This is a public meeting so if anyone from the public wishes to speak, state your name and address and state your comments. Okay, seeing no one step 47 i Planning Commission Meeting — May 16, 2006 forward, I will close the public meeting and I'll bring the issue back before the commissioners for discussion. No discussion. Okay. Then I would be open to a motion. Keefe: I make a motion the Planning Commission recommends the City Council approve Wetland Alteration Permit 06-17 subject to conditions 1 through 5. McDonald: Do I have a second? Papke: Second. Keefe moved, Papke seconded that the Planning Commission recommends the City Council approve Wetland Alteration Permit 06-17 subject to the following conditions: Wetland replacement shall occur in a manner consistent with the Minnesota Wetland Conservation Act (MR 8420) at a ratio of 2:1. 2. The applicant shall provide plans for the mitigation of the additional 0.32 acres of wetland to city staff for review and approval prior to wetland impacts occurring. All exposed soils from temporary haul routes, exposed slopes above the normal water level (NWL) and adjacent areas to the project shall be temporarily stabilized and seeded within the 7, 14 and 21 day time frames, depending upon slopes. Any concentrated flow areas shall receive temporary protection. 4. Erosion control blanket shall be used in concentrated flow areas and for slopes of 3:1. All remain areas shall be mulched and seeded to control erosion. 5. The applicant shall apply for NPDES Phase II Construction Permit and comply with their conditions of approval. All voted in favor and the motion carried unanimously with a vote of 4 to 0. PUBLIC HEARING: NEAR MOUNTAIN LAKE ASSOCIATION BEACHLOT• REOUEST FOR A VARIANCE AND CONDITIONAL USE PERMIT FOR THE ADDITION OF A SECOND DOCK ON THE PROPERTY LOCATED ON THE NORTHEAST SIDE OF LOTUS LAKE OFF PLEASANT VIEW ROAD (OUTLOT B REICHERT'S ADDITION) PLANNING CASE 06-20. Public Present: Name Address Sam & Laurie Cumow 650 Pleasant View Road David & Valerie Rossbach 670 Pleasant View Road Amy & Jahn Dyvik 610 Pleasant View Road M CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: The application of the City of Chanhassen Planning Case No. 06-17 On May 16, 2006, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of the City of Chanhassen for a wetland alteration permit for filling 0.72 acres of wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA Area. The Planning Commission conducted a public hearing on the proposed development which was preceded by published and mailed notice. The Planning Commission heard testimony from all interested persons wishing to speak. The Planning Commission now makes the following: FINDINGS OF FACT 1) The properties are currently zoned RR (Rural Residential). 2) The properties are guided by the Land Use Plan for Residential Low Density, Residential Medium Density, Office/Industrial and Parks/Open Space. 3) The properties are located in Chanhassen, Minnesota (Sections 22 and 27, Township 116 North, Range 23 West), Carver County. 4) Three wetlands on the subject properties are proposed to be impacted. 5) The total amount of wetland impact proposed is 0.72 acres. 6) The replacement of wetland at a 2:1 ratio will be accomplished through the creation of wetlands on the subject properties. 7) Section 20-404 of the City Code stipulates that there should be no net loss of wetlands. Finding: The project proposes wetland replacement through the construction of wetlands on-site therefore there will be no net loss of wetlands. SCANNED 8) Section 20-407 of the City Code requires an applicant for a wetland alteration permit must demonstrate compliance with the sequencing requirements set forth therein. Finding: The proposed project is compliant with the sequencing requirements. 9) Section 20-408 of the City Code requires a wetland alteration permit for the construction of new streets within wetlands. Finding: Upon receipt of a wetland alteration permit, the project will be in compliance with this requirement. 10) The planning report for Planning Case #06-17, dated May 16, 2006, prepared by Lori Haak is incorporated herein. RECOMMENDATION The Planning Commission recommends that the City Council approve the Wetland Alteration Permit for Planning Case #06-17 for the filling of 0.72 acres of wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA Area - BLUFF CREEK BOULEVARD ROUNDABOUT. ADOPTED by the Chanhassen Planning Commission this 16"' day of May, 2006. CHANHASSEN PLANNING IM GAPLANM2006 Planning Ca \06-17 Bluff Creek Boulevard Roundabout WAP94ndings of Fact PC.doc CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 06-17 N0710E IS HEREBY GIVEN that the Chanhassen Planning Commission will hold a public hearing on Tuesday, May 16, 2004, at7:00p.m. in the CouncilChamber!' in Chanhassen CityHall, 7700 Market Blvd. The purpose of this hearing is to consider a request for a Wetland Alterat ion Permit for the construction of a roundabout in conjunction with the construction of Bluff Creek Boulevard. Applicant: City of Chanhassen. A plan showing the location of the proposal is available for public review on the City's web site at www.ci.chaphassen.mn.us/sery/ plan/06-17. hhnl or at CityHall during regularbusinesshours. Allinterested persons are invited to attend this public hearing and express their opinions with respect to this proposal. Lori Haak, Water Resources Coordinator Email: lhaak@ci.chanhassen.mn.us Phone: 952.227- 1135 (PublishedintheChanhassen Villager on Thursday, May 4, 2006; No. 4659) Affidavit of Publication Southwest Suburban Publishing State of Minnesota) )SS. County of Carver ) Laurie A. Hartmann, being duty swom, on oath says that she is the publisher or the authorized agent of the publisher of the newspapers known as the Chaska Herald and the Chanhassen Vil- lager and has full knowledge of the facts herein stated as follows: (A) These newspapers have complied with the requirements constituting qualification as a legal newspaper, as provided by Minnesota Statute 331 A.02, 331 A.07, and other applicable laws, as amended (B) The printed public notice that is attached to this Affidavit and identified as No. 4 was published on the date or dates and in the newspaper stated in the attached Notice and said Notice is hereby incorporated as part of this Affidavit. Said notice was cut from the columns of the newspaper specified. Printed below is a copy of the lower case alphabet from A to Z, both inclusive, and is hereby acknowledged as being the kind and size of type used in the composition and publication of the Notice: abcdefghijklmnopgrstuvwxyz Laurie A. Hartmann Subscribed and sworn before me on this day of 12006 Notary Public GWEM K RACU NZ 'y h7 qVP A4 r:JrjO'4 RATE INFORMATION Lowest classified rate paid by commercial users for comparable space.... $40.00 per column inch Maximum rate allowed by law for the above matter ................................ $40.00 per column inch Rate actually charged for the above matter .............................................. $11.51 per colttmn inch o('0 -1-7 City Council Meeting — June 12, 2006 e. T -Mobile: Approval of a Conditional Use Permit for a 9 foot fence at the Water Tower Site, 6434 Murray Hill Road. f. Bluff Creek Boulevard Improvement Project: Approval of a Wetland Alteration Permit for Basin 8. g. Lake Minnewashta Homeowners Association: Approval of a Fireworks Permit for July 4, 2006. h. Resolution #2006-39: Approval of 2005 Year End Closings and Transfers. i. Resolution #2006-40: Adoption of Resolution Removing Properties from the Rural Service District. Expansion of Licensed Premises for Serving Beer & Wine, CJ's Coffee & Wine Bar, 600 Market Street, Suite 170. k. Approval of Quote: Tennis Court Resurfacing Project. 1. Resolution #2006-41: Longacres Drive Storm Pond Outlet Improvement and Lyman Boulevard Sewer Repair, City Project Nos. 06-08, 06-09: Approve Plans and Specifications and Authorize Advertisement for Bids. All voted in favor and the motion carried unanimously with a vote of 4 to 0. VISITOR PRESENTATIONS: Keith Gunderson: This is new business? Mayor Furlong: No sir. This is visitor presentations. Is there a particular item that you wanted to discuss? Keith Gunderson: Yes. It's about the trees that Todd Hoffman has made a decision to plant on the north end of Lotus Lake. Mayor Furlong: Okay, this would be the time to do it. Keith Gunderson: My name's Keith Gunderson. I live at 6661 Mohawk Drive. I'm here tonight to talk about people affected by the decision that Todd Hoffman just made to plant trees in the parkland known as Carver Beach Park. Todd has 5 trees scheduled for planting on the north end of the park that runs parallel with this trail. Six homes are affected by this decision, and this is what I want to talk about tonight. The homes affected by this decision from north to south are Maureen Schroeder, Glen Grainer, Richard and Joan Wright, Martha Nygren, myself, Keith and Patricia Gunderson, Chris and Cindy Anderson. Here tonight we have a couple of the homeowners with us tonight. The Wright's and the Anderson's, along with myself. Martha's 93 and she doesn't get out much anymore. All these people have felt that, have told him that they 2 SCANNED STAFF REPORT PROPOSAL: Wetland Alteration Permit for 2005 MUSA Area Wetland Basins 5,6 and 8 LOCATION: NE % of Section 27 and SE '/a of Section 22, Township 116N, Range 23 W. APPLICANT: City of Chanhassen c/o Paul Oehme 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 PRESENT ZONING: PUD -R, RLM 2020 LAND USE PLAN: Residential Low Density, Residential Medium Density, Office Industrial and Open Space ACREAGE: 0.72 DENSITY: n/a SUMMARY OF REQUEST: Request for a Wetland Alteration Permit for filling 0.72 acres of Type 1 wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA area. LEVEL OF CITY DISCRETION IN DECISION-MAKING: The City's discretion in approving or denying a wetland alteration permit is limited to whether or not the proposal meets the standards outlined in the Zoning Ordinance. If it meets these standards, the City must approve the wetland alteration permit. This is a quasi-judicial decision. seams 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 2 of 4 BACKGROUND As part of the 2005 MUSA expansion area, the City of Chanhassen will install a public roadway to connect Audubon Road and Powers Boulevard. As part of this public infrastructure, the alignment of the roadway impacts three wetlands as part of the public infrastructure installation. Two of the wetlands are impacted during the construction of the East/West Collector road and wetland basin 8 is impacted by the placement of the roundabout on the collector road. The City of Chanhassen as the LGU needs to issue a wetland alteration permit to approve the impact and mitigation to Basins 5, 6 and 8. The original submittal included the impact summary and mitigation plan for Basin 8. An addendum dated May 5, 2006 identifies additional impacts to Basins 5 and 6 and proposed mitigation. The mitigation plan is currently being submitted to ensure that the wetland replacement plan is approved prior to construction. WETLANDS Existing Wetlands Basin 5 is an 8.95 acre, Type 4 wetland located in the southeast quarter of the southeast quarter of Section 22. The basin is dominated by reed canary grass and clover. Basin 6 is a 1.69 acre, Type 3 wetland located in the southeast quarter of the southeast quarter of Section 22. The basin is dominated by reed canary grass and black willow. Basin 8 is a Type 1 wetland located in the NE 1/4 of section 27, East of Audubon Road and south of Lyman Boulevard. The basin is dominated by reed canary grass transitioning to smartweed, ragweed and eventually soybeans in the recently harvested area. Wetland Impacts The applicant submitted an application for 0.56 acres of wetland fill in Basin 8. The addendum proposes additional impacts to Basins 5 and 6. The total additional impacts indicated on the addendum (Attachment #3) are 0.16 acres. The applicant is proposing to replace the impacts to the Type 1 wetlands by creating 0.32 acres of Type I mitigation connected to Basin 5 and the proposed mitigation area for Basin 8. The proposed project proposes filling within three wetland basins within the project area. Proposed wetland impacts are as follows. Basin 5: 0.12 acres of Type 1 wetland Basin 6: 0.04 acres of Type 1 wetland Basin 8: 0.56 acres of Type 1 wetland Total Wetland Impacts: 0.72 acres of Type 1 Total Wetland Mitigation Required: 1.44 acres (NWC and PVC) 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 3 of 4 Wetland Mitigation Wetland replacement is required at a 2 to 1 ratio. The replacement of wetland will be accomplished by creating 1.12 acres (48,786 square feet) of new Type 1 wetland connected to Basin 5 within the 2005 MUSA area. Additionally, the applicant's engineer is currently in the process of drawing plans to show the additional 0.32 acres of replacement wetland in conjunction with the 1.12 acres that were proposed in the original submittal. The applicant must provide plans for the mitigation of the additional 0.32 acres of wetland to City staff for review and approval prior to wetland impacts occurring. The topography will be blended to match the existing grade of Basin 5. After the new wetland credit and public value credit is excavated the area will be seeded with a BWSR-2 seed mix and the 10 foot buffer at the wetland setback will be seeded with a BWSR-5 seed mix to assist with slope stabilization. A five year monitoring plan as required by the Wetland Conservation Act has been developed. A report will be submitted annually for 5 years to ensure the success of the created wetland. ANALYSIS Initially, the applicant had considered additional mitigation sites. Other mitigation sites were not determined suitable due to their lack of hydrology, proximity to proposed developments and location of proposed storm water ponds by developers. Sequencing options considered were: 1) Wetland avoidance option This option was considered during sequencing however, total wetland avoidance was not considered feasible to accommodate property owners in the developing parcels while minimizing wetland and floodplain impacts. 2) No Build option The no -build option would avoid direct impacts to wetland basin5, 6 and 8 however, this option would fail to allow the City of Chanhassen to meet it's development goals and fails to make use of available space in Chanhassen. The no -build option was dismissed as not -feasible or prudent. In addition to the avoidance and no -build option the applicant considered comments received from commenting agencies on the slopes adjacent to the proposed mitigation areas. The comments indicated that the slopes should be reduced if at all possible and alternate mitigation areas shall be considered if needed. In investigating the plans which identified the 3:1 slopes it appears that reducing the slopes is not an acceptable option due to the buried sanitary line at the top of the slope. Alternate sites were not considered due to reasons previously addressed. Erosion Control All exposed soils must be temporarily stabilized and seeded within the 7, 14 and 21 day time frames, depending upon slopes. Erosion control blanket should be used in concentrated flow areas and for slopes of 3:1. All remaining areas shall be mulched and seeded to control erosion. 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 4 of 4 Other A eg ncies The applicant shall obtain a permit from the Minnesota Pollution Control Agency and comply with their conditions of approval. RECOMMENDATION Staff recommends the Planning Commission adopt the following motion: "The Planning Commission recommends the City Council approve Wetland Alteration Permit 06-17 subject to the following conditions: 1. Wetland replacement shall occur in a manner consistent with the Minnesota Wetland Conservation Act (MR 8420) at a ratio of 2:1. 2. The applicant shall provide plans for the mitigation of the additional 0.32 acres of wetland to City staff for review and approval prior to wetland impacts occurring. 3. All exposed soils from temporary haul routes, exposed slopes above the normal water level (NWL) and adjacent areas to the project shall be temporarily stabilized and seeded within the 7, 14 and 21 day time frames, depending upon slopes. Any concentrated flow areas shall receive temporary protection. 4. Erosion control blanket shall be used in concentrated flow areas and for slopes of 3:1. All remaining areas shall be mulched and seeded to control erosion. 5. The applicant shall apply for NPDES Phase II Construction Permit and comply with their conditions of approval" ATTACHMENTS 1. Findings of Fact. 2. Affidavit of Mailing. 3. Addendum to wetland mitigation plan dated May 5, 2006. 4. Drawing of additional wetland impacts to Basins 5 and 6. 5. 2005 MUSA Area Mitigation Plan for Basin 8 by Houston Engineering (selected pages). gAplan\2006 planning casesW6-17 bluff creek boulevard roundabout wapW647 staff report pc.doc Location Map Bluff Creek Boulevard Roundabout Wetland Alteration Permit Planning Case No. 06-17 City of Chanhassen Bluff Creek Boulevard Improvement Project Planning Case #06-17 MUO 0 CITY OF CHANHASSEN STAFF REPORT PC DATE: May 16, 2006 CC DATE: June 12, 2006 REVIEW DEADLINE: July 3, 2006 CASE #: 06-17 BY: LH, DA PROPOSAL: Wetland Alteration Permit for 2005 MUSA Area Wetland Basins 5, 6 and 8 LOCATION: NE'/< of Section 27 and SE Yo of Section 22, Township I I6N, Range 23 W. APPLICANT: City of Chanhassen c/o Paul Oehme w_ 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 PRESENT ZONING: PUD -R, 2020 LAND USE PLAN: Residential Low Density, Residential Medium Density, Office Industrial and Open Space ACREAGE: 0.72 DENSITY: n/a SUMMARY OF REQUEST: Request for a Wetland Alteration Permit for filling 0.72 acres of Type I wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA area. LEVEL OF CITY DISCRETION IN DECISION-MAKING: The City's discretion in approving or denying a wetland alteration permit is limited to whether or not the proposal meets the standards outlined in the Zoning Ordinance. If it meets these standards, the City must approve the wetland alteration permit. This is a quasi-judicial decision. LU Location Map Bluff Creek Boulevard Roundabout Wetland Alteration Permit Planning Case No. 06-17 City of Chanhassen 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 2 of 4 BACKGROUND As part of the 2005 MUSA expansion area; the City of Chanhassen will install a public roadway �rto connect Audubon Road and Powers Boulevard. As part of this public infrastructure, the `alignment of the roadway impacts three wetlands as part of the public infrastructure installation. Two of the wetlands are impacted during the construction of the East/West Collector road and wetland basin 8 is impacted by the placement of the roundabout on the collector road. The City of Chanhassen as the LGU needs to issue a wetland alteration permit to approve the impact and mitigation to Basins 5, 6 and 8. The original submittal included the impact summary and mitigation plan for Basin 8. An addendum dated May 5, 2006 identifies additional impacts to Basins 5 and 6 and proposed mitigation. The mitigation plan is currently being submitted to ensure that the wetland replacement plan is approved prior to construction. WETLANDS Existing Wetlands Basin 5 is an 8.95 acre, Type 4 wetland located in the southeast quarter of the southeast quarter of Section 22. The basin is dominated by reed canary grass and clover. Basin 6 is a 1.69 acre, Type 3 wetland located in the southeast quarter of the southeast quarter of Section 22. The basin is dominated by reed canary grass and black willow. Basin 8 is a Type 1 wetland located in the NE 1/4 of section 27, East of Audubon Road and south of Lyman Boulevard. The basin is dominated by reed canary grass transitioning to smartweed, ragweed and eventually soybeans in the recently harvested area. Wetland Impacts The applicant submitted an application for 0.56 acres of wetland fill in Basin 8. The addendum proposes additional impacts to Basins 5 and 6. The total additional impacts indicated on the addendum (Attachment #3) are 0.16 acres. The applicant is proposing to replace the impacts to the Type 1 wetlands by creating 0.32 acres of Type 1 mitigation connected to Basin 5 and the proposed mitigation area for Basin 8. The proposed project proposes filling within three wetland basins within the project area. Proposed wetland impacts are as follows. Basin 5: 0.12 acres of Type 1 wetland Basin 6: 0.04 acres of Type I wetland Basin 8: 0.56 acres of Tyne 1 wetland Total Wetland Impacts: 0.72 acres of Type 1 Wetland Total Wetland Mitigation Required: 1.44 acres (NWC and PVC) 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 3 of 4 Wetland Mitigation '`Wetland replacement is required at a 2 to 1 ratio. The replacement of wetland will be accomplished by creating 1.12 acres (48,786 square feet) of new Type 1 wetland connected to Basin 5 within the 2005 MUSA area. Additionally, the applicant's engineer is currently in the process of drawing plans to show the additional 0.32 acres of replacement wetland in conjunction with the 1.12 acres that were proposed in the original submittal. The applicant must provide plans for the mitigation of the additional 0.32 acres of wetland to City staff for review and approval prior to wetland impacts occurring. The topography will be blended to match the existing grade of Basin 5. After the new wetland credit and public value credit is excavated the area will be seeded with a BWSR-2 seed mix and the 10 foot buffer at the wetland setback will be seeded with a BWSR-5 seed mix to assist with slope stabilization. A five year monitoring plan as required by the Wetland Conservation Act has been developed. A report will be submitted annually for 5 years to ensure the success of the created wetland. ANALYSIS Initially, the applicant had considered additional mitigation sites. Other mitigation sites were not determined suitable due to their lack of hydrology, proximity to proposed developments and location of proposed storm water ponds by developers. Sequencing options considered were: 1) Wetland avoidance option This option was considered during sequencing however, total wetland avoidance was not considered feasible to accommodate property owners in the developing parcels while minimizing wetland and floodplain impacts. 2) No Build option The no -build option would avoid direct impacts to wetland basin5, 6 and 8 however, this option would fail to allow the City of Chanhassen to meet it's development goals and fails to make use of available space in Chanhassen. The no -build option was dismissed as not -feasible or prudent. In addition to the avoidance and no -build option the applicant considered comments received from commenting agencies on the slopes adjacent to the proposed mitigation areas. The comments indicated that the slopes should be reduced if at all possible and alternate mitigation areas shall be considered if needed. In investigating the plans which identified the 3:1 slopes it appears that reducing the slopes is not an acceptable option due to the buried sanitary line at the top of the slope. Alternate sites were not considered due to reasons previously addressed Erosion Control All exposed soils must be temporarily stabilized and seeded within the 7, 14 and 21 day time frames, depending upon slopes. Erosion control blanket should be used in concentrated flow areas and for slopes of 3:1. All remaining areas shall be mulched and seeded to control erosion. 2006 MUSA Area Wetland Alteration Permit Planning Case #06-20 May 16, 2006 Page 4 of 4 Other Agencies The applicant shall obtain a permit from the Minnesota Pollution Control Agency and comply with their conditions of approval. RECOMMENDATION Staff recommends the Planning Commission adopt the following motion: "The Planning Commission recommends the City Council approve Wetland Alteration Permit 06-17 subject to the following conditions: 1. Wetland replacement shall occur in a manner consistent with the Minnesota Wetland Conservation Act (MR 8420) at a ratio of 2:1. 2. The applicant shall provide plans for the mitigation of the additional 0.32 acres of wetland to City staff for review and approval prior to wetland impacts occurring. 3. All exposed soils from temporary haul routes, exposed slopes above the normal water level (NWL) and adjacent areas to the project shall be temporarily stabilized and seeded within the 7, 14 and 21 day time frames, depending upon slopes. Any concentrated flow areas shall receive temporary protection. 4. Erosion control blanket shall be used in concentrated flow areas and for slopes of 3:1. All remaining areas shall be mulched and seeded to control erosion. 5. The applicant shall apply for NPDES Phase II Construction Permit and comply with their conditions of approval" ATTACHMENTS 1. Affidavit of Mailing. 2. Addendum to wetland mitigation plan dated May 5, 2006. 3. Drawing of additional wetland impacts to Basins 5 and 6. 4. 2005 MUSA Area Mitigation Plan for Basin 8 by Houston Engineering (selected pages). 9:\plan\2006 planning cases\06-17 bluff creek boulevard roundabout wap\06-17 staff report pc.doc CITY OF CHANHASSEN AFFIDAVIT OF MAILING NOTICE STATE OF MINNESOTA) ) ss. COUNTY OF CARVER ) I, Karen J. Engelhardt, being first duly sworn, on oath deposes that she is and was on May 4, 2006, the duly qualified and acting Deputy Clerk of the City of Chanhassen, Minnesota; that on said date she caused to be mailed a copy of the attached notice of Public Hearing for Bluff Creek Boulevard Roundabout Wetland Alteration Permit – Planning Case 06-17 to the persons named on attached Exhibit "A", by enclosing a copy of said notice in an envelope addressed to such owner, and depositing the envelopes addressed to all such owners in the United States mail with postage fully prepaid thereon; that the names and addresses of such owners were those appearing as such by the records of the County Treasurer, Carver County, Minnesota, and by other appropriate records. Subscribed and sworn to before me this -r`�� day of Y � LL4 2006. Notary b6 Kar J. Engelh dt Deputy erk KIM T. MEUWISSEN Notary Public -Minnesota :,:�a My ComMssion Fic .Jan 37, 2oto CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: The application of the City of Chanhassen Planning Case No. 06-17 On May 16, 2006, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of the City of Chanhassen for a wetland alteration permit for filling 0.72 acres of wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA Area. The Planning Commission conducted a public hearing on the proposed development which was preceded by published and mailed notice. The Planning Commission heard testimony from all interested persons wishing to speak. The Planning Commission now makes the following: FINDINGS OF FACT 1) The properties are currently zoned RR (Rural Residential). 2) The properties are guided by the Land Use Plan for Residential Low Density, Residential Medium Density, Office/Industrial and Parks/Open Space. 3) The properties are located in Chanhassen, Minnesota (Sections 22 and 27, Township 116 North, Range 23 West), Carver County. 4) Three wetlands on the subject properties are proposed to be impacted. 5) The total amount of wetland impact proposed is 0.72 acres. 6) The replacement of wetland at a 2:1 ratio will be accomplished through the creation of wetlands on the subject properties. 7) Section 20-404 of the City Code stipulates that there should be no net loss of wetlands. Finding: The project proposes wetland replacement through the construction of wetlands on-site therefore there will be no net loss of wetlands. 8) Section 20-407 of the City Code requires an applicant for a wetland alteration permit must demonstrate compliance with the sequencing requirements set forth therein. Finding: The proposed project is compliant with the sequencing requirements. 9) Section 20-408 of the City Code requires a wetland alteration permit for the construction of new streets within wetlands. Finding: Upon receipt of a wetland alteration permit, the project will be in compliance with this requirement. 10) The planning report for Planning Case #06-17, dated May 16, 2006, prepared by Lori Haak is incorporated herein. The Planning Commission recommends that the City Council approve the Wetland Alteration Permit for Planning Case #06-17 for the filling of 0.72 acres of wetland for the construction of a public street and roundabout in the Chanhassen 2005 MUSA Area - BLUFF CREEK BOULEVARD ROUNDABOUT. ADOPTED by the Chanhassen Planning Commission this 1601 day of May, 2006. CHANHASSEN PLANNING COMMISSION FAV Its Chairman GAPLAM2006 Planning Casest06-17 Bluff C ak Boulevard Roundabout wAPOndings of Fact PC.doc Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time; Tuesday, May 16, 2006 at 7:00 P.M. This hearing may not start until ' later in the evening, depending on the order of theagenda. Location: City Hall Council Chambers, 7700 Market Blvd. Request for a Wetland Alteration Permit for the construction of Proposal: a roundabout in conjunction with the construction of Bluff Creek Boulevard — Planning Case 06-17 Applicant: City of Chanhassen Property East of Audubon Road, South of Lyman Blvd. and North of Location: Pioneer Trail. A location map Is on the reverse side of this notice. The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the What Happens W Wthe public hearing through the following steps: What Happens 1. Staff will give an overview of the proposed project. at the Meeting: 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please visit the City's projects web page at: www.ci.chanhassen.mn.us/serv/Dian/06-17.html. If you wish to talk to someone about this project, please contact Lori Haak Questions & by email at Ihaakfti.chanhassen.mn.us or by phone at 952- Questions & 227-1135. If you choose to submit written comments, it is Comments: helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this Item will be available online on the project web site listed above the Thursday prior to the City Review Procedure: Planning Commission meeting. City Review Procedure: • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Wetland Alterations, Rezonings, Comprehensive Plan Amendments and Code Amendments require a public hearing before the Planning Commission. City ordinances require all property within 500 feet of the subject site to be notified of the application in writing. Any interested party Is invited to attend the meeting. • Staff prepares a report on the subject application that includes all pertinent information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation. The item will be opened for the public to speak about the proposal as a part of the hearing process. The Commission will close the public hearing and discuss the item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commerciaUndustrial. • Minnesota State Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an Item through the process should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokespersonlrepresentative is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal, Staff Is also available to review the project with any interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included in the report to the City Council. If you wish to have something to be included in the report, lease contact the Planning Stall person named on the notification. Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time, Tuesday, May 16, 2006 at 7:00 p.m. This hearing may not start until ' later In the evening,depending on the order of theagenda. Location: City Hall Council Chambers 7700 Market Blvd. Request for a Wetland Alteration Permit for the construction of Proposal: a roundabout in conjunction with the construction of Bluff Creek Boulevard — Planning Case 06-17 Applicant: City, of Chanhassen Property East of Audubon Road, South of Lyman Blvd. and North of Location: Pioneer Trail. A location map Is on the reverse side of this notice. The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the public hearing through the following steps: What Happens W Wthe 1 • Staff will give an overview of the proposed project. Meeting: 2. The applicant will present plans on the project. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses the project. If you want to see the plans before the meeting, please visit the City's projects web page at: www.ci.chanhassen.mn.us/sere/plan/06-17.htmi. If you wish to talk to someone about this project, please contact Lori Haak by email at Ihaak@ci.chanhassen.mn.us or by phone at 952 - Questions & 227-1135. If you choose to submit written comments, it is Comments: helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The staff report for this Item will be available online on the project web site listed above the Thursday prior to the Planning Commission meeting. City Review Procedure: • Subdivisions, Planned Unit Developments, Site Plan Reviews, Conditional and Interim Uses, Wetland Alterations, Rezonings, Comprehensive Plan Amendments and Code Amendments require a public hearing before the Planning Commission, City ordinances require all property within 500 feet of the subject site to be notified of the application in writing. Any Interested party is invited to attend the meeting. • Staff prepares a report on the subject application that Includes all pertinent information and a recommendation. These reports are available by request. At the Planning Commission meeting, staff will give a verbal overview of the report and a recommendation, The item will be opened for the public to speak about the proposal as a part of the hearing process. The Commission will close the public hearing and discuss the item and make a recommendation to the City Council. The City Council may reverse, affirm or modify wholly or partly the Planning Commission's recommendation. Rezonings, land use and code amendments take a simple majority vote of the City Council except rezonings and land use amendments from residential to commercial industrial. • Minnesota state Statute 519.99 requires all applications to be processed within 60 days unless the applicant waives this standard. Some applications due to their complexity may take several months to complete. Any person wishing to follow an item through the process should check with the Planning Department regarding its status and scheduling for the City Council meeting. • A neighborhood spokespersonlrepresentative is encouraged to provide a contact for the city. Often developers are encouraged to meet with the neighborhood regarding their proposal. Staff is also available to review the project with any interested person(s). • Because the Planning Commission holds the public hearing, the City Council does not. Minutes are taken and any correspondence regarding the application will be included In the report to the City Council. If you wish to have something to be included In the report, lease contact the Plannino Stall person named on the notification. RI This map is neither a legally recorded map nor a survey and is not intended to be used as one. This map is a cortpiiation of records, information and data located in various city, county, state and federal offices and other sources regaining the area shown, and is to be used for reference puryoses only. The City does not warrard that the Geographic Imometion System (GIS) Data used to prepare this rrep are enor free, and the City does not represent Mat the GIS Data can be used for navigatonal, tracking or any other purpose requiring esacdrg meazurement of distance or direction or precision in the depiction of geographic features. M mors or discrepancies are found please contact 952.227.1107. The preceding dsdaimer is provided pursuant to bgnnesom Stables §666.03. Subd. 21 (2000), and Me user of ins map acknowledges Mat Me City shag not be Fade for any damages, and expressly waives all cleraa, and agrees to defend, indemnity, and hdtl haniess this City front any and all claims brought by User, its enployees or agents, or third paries which arise out of the user's access or use of data provided. 1J This map is neither a legally recorded map nor a survey and is rat intended to be used as one. This nap is a =1019tion Of records, inlomation and data located in various city, county, state and federal offices and other ao CfEer regarding the area shown, and is to be used for reference purposes only. The City does not "nest that the Geographic Infonretion System (GIS) Data used to prepare this map are error free, and the City does not represerd that the GIS Data can be used for na iigalional, traclong or any other Purpose requiring exacting rreawrement of distance or direction or predslon in the depiction of geographic features. 0 errors or discrepaoies are found please comae 952-227-1107. The preceding disclaimer is prwded Pursuant to wrinesots Statutes §466.o3, Subd. 21 (2000), and is user of this map ackeowfedges Met the City shall int be Fade for any dartsgaii and expressly esives all clams, and agrees to detend, indermity, and hold hamiess Me City from any and all cairns brought by User, its—00yeas or agents. or third parties which arise out of the users access or use of data providecl. GMAC MODEL HOME FINANCE, INC PETERSON-JACQUES 6802 PARAGON PLACE #350 FARM LAND CO RICHMOND VA 23230-1650 15900 FLYING CLOUD DR EDEN PRAIRIE, MN 55347-4047 1-i'd-4-Jill] (External correspondence) Date: 5-5-2006 Houston Engineering, Inc. 10900 731tl Ave. N., Ste. 106 Ph. (763) 493-4522 Maple Grove, MN 55369 Fax (763) 493-5572 From: Sara Beth Scadlock, Houston Engineering Chadd Larson, Kimley-Horn and Associates To: Don Asleson,City ofChanUassen Subject: AdditionalWetlandlmpacts Description: It has come to the attention of Kimley-Hom and Associates that there will be two small additional areas of wetland impact in addition to the 0.56 acres of Type 1 wetland in Basin 8. These additional areas of impacts are due to the 3:1 slope from Bluff Creek Boulevard. The wetland impacts are 0.12 acres in Basin 5 and 0.04 acres in Basin 6 (See attached drawing for details). These impacts are for the purpose of constructing public infrastructure for the City of Chanhassen's 2005 MUSA expansion area (City Project No. 06-05). An application for impacts and a mitigation plan was submitted to the LGU, the City of Chanhassen. Wetland mitigation: Proposed onsite wetland mitigation includes the construction of a new wetland area adjacent to existing wetland area. The area of proposed onsite wetland creation is located on the east side of Bluff Creek adjacent to the east boundary of Basin 5. The wetland creation will result in a total of 1.12 acres (original) 0.32 acres (additional) for a total of 1.44 acres of New Wetland Credit (NWC) on site. Houston Engineering is currently in the process of drawing plans to show the additional 0.32 acres of replacement wetland in conjunction to the 1.12 acres that that were discussed in the wetland mitigation plan. These revised drawings will be submitted to the City for review. Summary of Impacts: Original Impacts Basin 8 0.56 acres 2:1 Replacement 1.12 acres Additional Impacts Basin 5 0.12 acres Basin 6 0.04 acres 2:1 Replacement 0.32 acres Total Impacts 0.72 acres Total Replacement 1.44 acres 0 page 1 of 1 Ll , , ROO ( |u | ❑} \\k` ❑) © / � / ( / � PROJECT SUMMARY BASIN 8 WETLAND NIITIGATION PLAN Applicant: City of Chanhassen, Paul Oehme, PE Agent: Kimley-Horn and Associates, Inc., Chadd Larson, PE Suite 345N, 2550 University Ave. W St. Paul, MN 55114 Report by: Houston Engineering, Inc., Sara Beth Scadlock Suite 106, 10900 73`d Ave. N Maple Grove, MN 55369 Site Location: South of Lyman Blvd. and East of Audubon Road in the City of Chanhassen, 2005 MUSA Area, TI 16N, R23W, Section 27, Carver County WCA LGU: City of Chanhassen ,_Date: April, 2006 Description: The City of Chanhassen proposes to impact 0.56 acres of Type 1 wetland, Basin 8, for the purpose of constructing public infrastructure for the City of Chanhassen's 2005 MUSA expansion area (City Project No. 06-05). Wetland mitigation: Proposed onsite wetland mitigation includes the construction of a new wetland area adjacent to existing wetland area. The area of proposed onsite wetland creation is located on the east side of Bluff Creek adjacent to the east boundary of Basin 5. The wetland creation will result in 1.12 acres of New Wetland Credit (NWC) on site. April 2006 —Basin 8 Mitigation Plan Basin 8 Wetland Mitigation Plan I. INTRODUCTION The City of Chanhassen is proposing to construct infrastructure associated with their 2005 MUSA expansion area (City Project No. 06-05). This site, partially agricultural land, is located south of Lyman Blvd and east of Audubon Road in the City of Chanhassen, and is in the Riley Purgatory Bluff Creek Watershed District. T116N, R23W, Sec. 22. Carver County, Minnesota (Figure 1). This public infrastructure project is proposed for the purpose of meeting the needs of future development as a part of the City of Chanhassen's 2005 MUSA area expansion. As a part of the project development an Alternative Urban Area Review (AUAR) was completed for the entire project area. This AUAR identified the need for Bluff Creek Boulevard to travel through the project area and intersect with Audubon Road to the west and Powers Boulevard to the east. In addition, the AUAR identified the need for a south connector road to connect Bluff Creek Boulevard to Pioneer Trail to accommodate future traffic demands. One wetland (Basin 8) was identified and delineated for this section of the project on November 1, 2005. Previous delineations on this site for this project by Houston Engineering include Basins 1-6 which were delineated in a previous report presented to the City of Chanhassen on May 26, 2005 and Basin 7 delineated in a previous report presented to the City of Chanhassen on October 28, 2005. Figure 2 shows all the existing wetlands delineated by Houston Engineering for this project (Basins 1-8) and Figure 3 is a detailed delineation map of Basin 8. A full wetland delineation report including NWI maps, soils maps, and data sheets for Basin 8 is attached (Attachment A). Other wetlands associated with other portions of the MUSA area expansion were delineated by other consultants and are not discussed in this report. The infrastructure project addressed in this report would impact a total of 0.56 acres of wetland (Figure 4). This wetland was classified as a Type 1. Using the Cowardin system April 2006 — Basin 8 Mitigation Plan 2 the wetland is a palustrine system with emergent vegetation that has a seasonally flooded regime and is partially drained (PEMCd). The following pages represent the sequencing discussion and describe the proposed wetland mitigation plan of expansion of Basin 5 in more detail. Figure 5 and 6 show the proposed on-site mitigation area and grading plan. H. SEQUENCING DISCUSSION The following section discusses wetland avoidance, impact, minimization, impact reduction and replacement in compliance with Minnesota Wetland Conservation (WCA) requirements. This sequencing discussion includes a summary of alternatives that were considered and changes that were made to the development plan to minimise wetland impacts. All avoidance and minimisation options considered met the following goals for the development. • Provide for sufficient residential housing units to compensate for infrastructure expenses (roads, utilities, ponds, etc.) construction costs, and land costs. • Provide safe access to the site consistent with City planning. • Minimize direct, indirect, and long-term impacts to on-site wetlands and other natural resources on site. The following alternatives were evaluated within the criteria and constraints described above. Wetland Avoidance Using WCA guidelines, the wetland avoidance alternatives considered and evaluated included the no -build and alternate project designs that avoid all wetland impacts. Alternative Project Designs The proposed Bluff Creek Boulevard roadway alignment was chosen from numerous alternatives through multiple meetings with adjacent property owners (Attachment B), developers, and the City. The wetland, Basin 8, that is impacted by the construction of Bluff Creek Boulevard is located at the intersection with the future south connector roadway to Pioneer Trail. The location of this intersection was determined based on input from adjacent property owners and evaluating the best design alternatives based on the proposed roadway alignment and profile. This will be a roundabout intersection April 2006 — Basin 8 Mitigation Plan 3 which will enhance the overall roadway. The current roadway alignment minimizes flood plain and wetland impacts. Alternative project designs that avoid wetland impacts and allow the applicant to effectively utilize buildable upland areas of the site are not feasible. Other intersection locations were evaluated however the current location was selected based on the desire to accommodate both adjacent properties owners' site development plans and minimize the disturbance to other wetlands and natural land features. A conventional tee intersection was considered as an option however there was strong support to enhance the roadway with a roundabout intersection, which also played a role in the intersection location determination. No -Build Alternative The no -build alternative would avoid direct impacts to Basin 8, but would not allow the City of Chanhassen to utilize the surrounding properties as identified in the AUAR. The City of Chanhassen Comprehensive Plan indicates that a residential development would be an appropriate use for the surrounding properties given the access to existing roads, other developments in the area and planned future land uses. Single family home development is compatible with adjacent land use. Abandoning the proposed project fails to meet the project goals of the City of Chanhassen and does not make use of available space within the City. Logistically, the development of this project represents safe and efficient use of available property. For those reasons the no -build alternative was not considered feasible or prudent and was rejected. It was determined that practical and feasible alternative project designs that avoid all direct impacts to wetland areas are not present within the scope of the development, project goals, and site constraints. Wetland Impacts The proposed project plan (Figure 4) attempts to balance efficient land use and minimize wetland and other environmental impacts during and after construction of the proposed project. Wetland Basin 8 was identified for this project (Figures 2 and 3). Wetland April 2006 — Basin 8 Mitigation Plan 4 impacts, which are confined to only Basin 8, are necessary for construction. Impacts total 24,393 sq ft (0.56 acres). Wetland Impact Rectification No temporary impacts are proposed with this plan. Impact rectification does not apply. Summary of Unavoidable Impacts The proposed plan represents a reasonable effort to accommodate the desired development while minimizing wetland impacts, and replacing unavoidable impacts where appropriate. The proposed plan results in 0.56 acres of unavoidable fill. Impacts to wetlands have been minimized to the extent possible within the context of project goals. The wetland impact area is dominated by reed canary grass. III. WETLAND MITIGATION PLAN Replacement Requirement Proposed direct wetland impacts involve filling 24,393 sq ft (0.56 acres) of Basin 8 for a roadway (Figure 4). The City of Chanhassen and the WCA wetland rules require wetland replacement at a 2:1 ratio. Wetland mitigation areas will be constructed by excavation down to elevations equal to the adjacent existing wetland selected for an appropriate mitigation area which is Basin 5. Table 1— Impact and Mitigation Summary Proposed Wetland Impact - Basin 8 (Type 1) Sq Ft Acres 24,393 0.56 2:1 Replacement Ratio Sq Ft Acres 48,786 1.12 Onsite New Wetland Creation (sq ft) - Basin 5 (Type 1) Sq Ft Acres 48,486 1.12 April 2006 — Basin 8 Mitigation Plan 5 On -Site Mitieation Of the several sites considered and after discussions with other developers working on the project and the City of Chanhassen staff the proposed onsite wetland mitigation area will be excavated from upland adjacent to Basin 5 (Figures 5 and 6). Excavation using heavy and small equipment will expand the wetland area. Runoff from backyards is planned to enter the wetland basins after sediments and nutrients have been removed by the upland buffer areas. Buffer areas are designed between the proposed bike path and the created wetland area. The wetland creation area will be excavated to match the existing elevation of Basin 5 and graded to blend into the existing topography of the site. This will improve the success for wetland hydrology in the created wetland area A herbicide will be applied to the soils and will be prepared for seeding of wetland vegetation. After final grading the replacement wetland will be seeded with BWSR seed mix No. 2 or equivalent at a minimum suggested rate of 8 lbs/acre and a 10 foot buffer area will be seeded with BWSR seed mix No. 5 to assist with slope stabilization and protect the created wetland from upland species encroachment (Attachment Q. Seeding will be according to specifications with clean mulch tacked to the ground. The wetland is expected to develop to the 871 contour and will receive hydrology from the seasonal flooding of Bluff Creek as well as some groundwater and surface water influences. See wetland mitigation drawings (Figures 5 and 6) for grading details. The wetland will be maintained as needed and as suggested in Attachment D. Other proposed onsite mitigation areas were eliminated due to their lack of hydrology, proximity to the proposed developments, and locations of proposed stormwater ponds by other developers. Apri12006 — Basin 8 Mitigation Plan 6 Monitorine Plan Requirements for monitoring mitigation wetlands as described in WCA will be followed. The WCA rules require that an annual report be submitted for 5 years to ensure the success of the created wetland areas. The report must contain a description of the project location, size, current wetland type and desired wetland type; a comparison of the as -built specifications versus the design specifications; hydrology measurements; plant communities observed; and color photographs of the project area. Annual reports should be submitted to the City of Chanhassen. April 2006 — Basin 8 Mitigation Plan 7 -§EG _ ` kid} q. �} ` | \\ / M:\ •| . ;\ )§�& , !|E/ 2 �!„ ) ) �w_jp} �r ❑ J ` § S� O sc3 5 O 938 e� -1 hod s h a xa d� �7 cei€g Is ey;sa3bRz z Hilda $ Zb-g£Zn ifig'( 3d w §guCg i i � O 3 b� aFP N m 0 0 99 a$ s S � WEE e Fas [[e J Q}�3 Q 6i �93 LLLLZ � Wv� Sa o S� O sc3 5 O 938 e� -1 hod s h a xa d� �7 cei€g Is ey;sa3bRz z Hilda $ Zb-g£Zn ifig'( 3d w §guCg i i � O 3 b� aFP N m 0 0 99 -R z 'W w�9 1* 1 9 0 'E9 USE B I a n I O 0 N �1 C 0 0 rn E9 .y 0 m 4 0 m i C 0 0 0 E•ll a m rn U)i 870 iMIIIUAIlUN AREA WETLAND ' r ; a< --- mmm ___ _-_� ER - E., 0+00 1+00 WETLAND MITIGATION CROSS SECITON A—A No. Dote Revisions App. DRAWING NAME BLUFF -WETLANDS X SECTION DESIGNED BY: SBS DRAWN BY: DJL CHECKED BY: NAME DATE: PROJECT NO. PROJ. NUM ni gas �e �Vl F,TF,Ji_rAV.t ma00 c a 0+00 1+00 WETLAND MITIGATION CROSS SECITON B—B lQmley-Horn and Associates, Inc. i f 870 0+00 1+00 WETLAND MITIGATION CROSS SECITON C—C I HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION OR REPORT WAS PREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT 1 AM A DULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF MINNESOTA. x .,... DATE: MN LIC. NO. X 0 40 80 160 HORIZONTAL SCALE IN FEET LEGEND CONTACT "GOPHER STATE ONE CALL" FOR LOCATIONS OF BURIED UTILITIES. CALL (651) 454-0002 OR 1-800-252-1166. LLJ 100—YEAR FLOODPLAIN El EXISTING WETLAND ® WETLAND MITIGATION—BWSR MIX NO.2 ® WETLAND MITIGATION—BWSR MIX NO.5 CITY OF CHANHASSEN BLUFF CREEK LOWLANDS PUBLIC INFRASTRUCTURE IMPROVEMENTS BID PACKAGE 2 BLUFF CREEK BOULEVARD BASIN 8 MITIGATION CROSS SECTIONS CITY PROJECT 06-05 SHEET 2 OF 2 SHEET NO. S.A.P. 194-125-001 00 S.A.P. COUNTY PROJECT 150 mm rim 0+00 1+00 WETLAND MITIGATION CROSS SECITON B—B lQmley-Horn and Associates, Inc. i f 870 0+00 1+00 WETLAND MITIGATION CROSS SECITON C—C I HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION OR REPORT WAS PREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT 1 AM A DULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF MINNESOTA. x .,... DATE: MN LIC. NO. X 0 40 80 160 HORIZONTAL SCALE IN FEET LEGEND CONTACT "GOPHER STATE ONE CALL" FOR LOCATIONS OF BURIED UTILITIES. CALL (651) 454-0002 OR 1-800-252-1166. LLJ 100—YEAR FLOODPLAIN El EXISTING WETLAND ® WETLAND MITIGATION—BWSR MIX NO.2 ® WETLAND MITIGATION—BWSR MIX NO.5 CITY OF CHANHASSEN BLUFF CREEK LOWLANDS PUBLIC INFRASTRUCTURE IMPROVEMENTS BID PACKAGE 2 BLUFF CREEK BOULEVARD BASIN 8 MITIGATION CROSS SECTIONS CITY PROJECT 06-05 SHEET 2 OF 2 SHEET NO. S.A.P. 194-125-001 00 S.A.P. COUNTY PROJECT 150 ':1 2005 MUSA AREA CITY Of CNANNASSEN, MN r WETLAND PERMIT APPLICATION MITIGATION PLAN BASIN 8 -Wfw ,VIR i ii Y • . nt t i Presented to: ; Kimley-Horn and Associates, Inc. , Suite 345N, 2550 University Ave. W St. Paul, MN 55114 �. ,lrt 1 t �Ax w 1 r r �_._� `p.r ,'��pjt ACJ n•� 2005 MUSA AREA CITY Of CNANNASSEN, MN r WETLAND PERMIT APPLICATION MITIGATION PLAN BASIN 8 -Wfw ,VIR i ii Y • . nt t i Presented to: ; Kimley-Horn and Associates, Inc. , Suite 345N, 2550 University Ave. W St. Paul, MN 55114 �. 3Ji=i j lGAjt� GoPY Fat GG73' G� Criy�/Bssi� I I 1 1 I Table of Contents Minnesota Local/State/Federal Application Forms for Water/Wetland Projects Project Summary — Basin 8 Wetland Mitigation Plan ................................... 1 I. Introduction................................................................................. 2 II. Sequencing Discussion.................................................................... 3 Wetland Avoidance......................................................................... 3 WetlandImpacts............................................................................ 4 Wetland Impact Rectification............................................................. 5 Summary of Unavoidable Impacts........................................................ 5 III. Wetland Mitigation Plan.................................................................. 5 ' Replacement Requirement.................................................................. 5 On -Site Mitigation........................................................................... 6 MonitoringPlan .............................................................................. 7 1 I I 1 I Figures Figure 1 — Site Base Map Figure 2 — Wetland Delineation Map Figure 3 — Basin 8 Transect Locations Figure 4 — Proposed Roadways Map Figure 5 — Proposed Wetland Mitigation Figure 6 — Cross Sections of Proposed Mitigation Attachments Attachment A — Basin 8 Delineation Report Attachment B — Adjoining Property Owners Attachment C — Suggested Wetland Seeding Plan Attachment D — Suggested Wetland Maintenance Plan NA -026620-0313 (V.2.02 for MS WORD) 1029/04 Minnesota Local/State/Federal Application Forms for Water/Wetland Projects USE THIS APPLICATION FOR ANY PROJECT AFFECTING A LAKE, RIVER, STREAM OR WETLAND, ' INCLUDING: Local Government Unit Approval Pursuant to Minnesota Wetlands Conservation Act (WCA) Minnesota Department of Natural Resources (DNR) Permit to Work in Public Waters Department of the Army Permit (33 CFR 325) ' Note: The U.S. Army Corps of Engineers (COE) will forward application forms to the Minnesota Pollution Control Agency (MPCA) for Processing if state water quality certification is required from the MPGA. You do not need to send this application to the MPCA. This application packet includes : Part 1: The BASIC APPLICATION and the COE APPLICATION to be filled out by all applicants (see Instructions). ' PART H: The REPLACEMENT PLAN SUPPLEMENT to be completed only for projects that impact wetlands and require a replacement plan for wetland mitigation. Ir you're not sure whether your project requires a replacement plan, call your Local Government Unit (LGU) or Soil and Water Conservation District (SWCD) office for guidance. Do not proceed with your project until you have received all required approvals from your LGU, the DNR and the COE. If you wish to confirm the status of your application at any time, contact the agencies directly (see Instructions, page 2). Proceeding with work before all required authorizations are obtained may result in fines or other penalties, and may include a requirement to restore the project site to original condition. ' If you have questions or need assistance with filling out these forts, contact your local SWCD office, your LGU, your Area DNR Waters office, or your COE field office (see Instructions, page 2). If you believe that your project may be subject to watershed district, local zoning, or any other local regulations besides those of your LGU, contact those office(s) directly. If you are a Federal Farm Program participant and your project affects a wetland or water body on agricultural land, your eligibility for USDA benefits may be affected. Contact a Natural Resources Conservation Service office for further information. ' A QUICK LOOK AT THE PROJECT APPLICATION PROCESS Electronic files: Forts can be downloaded and filled out using Microsoft Word. Your input will be restricted to fill-in fields where users can enter text or check L boxes. These areas appear gray on the screen, but not on the printed document. Send copies of these completed application forts to your LGU, your Area DNR Waters office, and your COE regulatory office. Any of the agencies may make initial contact with you to: a) inform you that it has no jurisdiction over you project; b) request additional information needed; or ' c) inform you of applicable fees. When your application is considered complete and appropriate fees have been received (if requested) it will be distributed for appropriate review. ' Following agencies' reviews, you will be informed if it has been approved, approved with changes or conditions, withdrawn, or denied. For information about state laws, rules and regulations that direct this process go to the web site www.revisor.leg.state.nm.m. For information m U.S. Army Corps Of Engineers regulations go to the web site www.mvp.usace.amry.mil. 'Instructions for Part I HELP 1: Every applicant must fill out Section 1. The applicant is the person, agency, company, corporation, or other organization that owns, leases, or holds other legal rights to the land where the project is located. Indicate names of multiple applicants on a separate sheet. HELP IA: Fill out Section 1A only if you have designated an authorized agent. An authorized agent may be an attorney, builder, consultant; contractor, engineer, or any other person or organization designated by the applicant to represent him/her in this process. An agent is not required. HELP 5: Purpose, description and dimensions of project: State briefly (in a sentence or two) what you propose to do and why it is needed. Also, describe whether your project will involve any of the following: Construction of structures, filling, draining, dewatering, removing, excavating or repair. - Construction of an access path, bridge, culvert, dam, ditch, dock, driveway, riprap, mad, sand blanket, shore protection, or tile line. ' _ Construction of any structures on fill, piles or a float -supported platform If so, describe. Dredging or discharging (placing fill material) into a wetland or other water body (including the temporary placement of material). If so, explain the specific purpose of the placement of the material (such as erosion control) and indicate how it will be done (such as with a backhoe or dmgline). Ifdredged material is to be discharged on an upland site, identify the location of the site. Minnesota Local/State/Federal Application Fors for Water/Wetland Projects Instructions, Page t Include an overhead view drawing showing the work to be undertaken and its relative location on the property. Show items such as property boundaries or lot dimensions; location and extent of shoreline, wetlands and water; location and dimensions and footprint of the proposed project, structure or activity (include length, width, elevation and other measurements as appropriate); points of reference such as existing homes, structures, docks or landscape features; indication of north; and location of spoil and disposal sites (if applicable). Hand drawn, computer generated or professionally prepared drawings are acceptable, as long as they contain all necessary information clearly, accurately, and in adequate detail. Please include specific dimensions whenever possible. You may also include photos, if you wish. HELP 7: For information regarding adjacent landowners, contact the tax assessor where the project is to be developed. HELP 8: H any part of the work has already been completed, describe the area already developed. Include a description of structures completed; any dredged or fill material already discharged (including type of material and volume in cubic yards); acres or square feet filled (if a wetland or other waterbody); and whether the work was done under an existing permit (if so identify the authorization, if possible). ' HELP 9: Other permits, reviews or approval related to the project may include the following: conditional use permit; plat approval; zoning variance; National Pollutant Discharge Elimination System permit state disposal system permit (includes dredged material disposal); watershed district/watershed management organization permit (stormwater, erosion, floodplain); environmental assessment worksheet/environmental impact statement hazardous waste site; feedlot permit groundwater appropriation permit; or county/township ' driveway/road permit. Are you aware of any archeological or cultural resource determinations or surveys completed concerning the project or replacement site by the State Historic Preservation Office (SHPO) or others? If yes, please explain on a separate sheet or attach a copy of any determinations or surveys. 'Final Checklists (Part I) ® Have you completed all of Part I (Page 1), plus the Federal application (Page 2)? ® Did you (and your agent, if applicable) sign Section 10 on page 1? ' ® Have you signed the Application for the Department of the Army Permit (Page 2) to seek Federal authorization of your project? ® Have you included the necessary attachments for Part I? Attachments must include: ® Site Locator Map (Section 3) ® Type of Project (Section 4) (if additional space was needed) ® Overhead View of Project (Section 5 and HELP 5) ® Project Purpose, Description and Dimensions (Section 5) (if additional space was needed) Attachments may also include: ® Applicant Contact Information (HELP 1) (if additional space was needed) ® Project Location (Section 3) (if additional space was needed) ® Project Alternatives (Section 6) (if additional space was needed) ® Photographs ® Adjoining Property Owners (Section 7) (if additional space was needed) ❑ Work Already Completed Section (Section 8) (if you answered YES) ❑ State Historic Preservation Office determination or survey 'Submitting Your Application Make three copies of the entire application and all attachments. Keep the original, and mail a complete copy of your application to each of the local, state, and Federal entities listed below. Be sure to include Part I and all attachments with each application. ' LOCAL: Send to the appropriate Local Government Unit (LGU). If necessary, contact your county Soil and Water Conservation District (SWCD) office or visit the Board of Water and Soil Resources (BWSR) web site (www.bwsr.state.mn.us) to determine the appropriate LGU. STATE: Send to your Area DNR Waters office, attention Area Hydrologist. If necessary, contact your county Soil and Water Conservation District (SWCD) office or visit the DNR website (www.dur.state.mn.us) to locate the Area Hydrologist for your location, or contact a Regional DNR office: NW Region: NE Region: Central Region: Southern Region: 2115 Birchmont Beach Road N.E. 1201 East Highway 2 1200 Warner Road 261 Highway 15 South Bemidji, MN 56601 Grand Rapids, MN 55744 St. Paul, MN 55106 New Ulm, MN 56073 Phone: 218-755-3973 Phone: 218-327-4416 Phone: 651-772-7910 Phone: 507359-6053 FEDERAL: Send to the appropriate U.S. Army Corps of Engineers regulatory field office: Brainerd: St. Paul: La Crescent: Two Harbors: U.S. COE, Regulatory Branch U.S. COE, Regulatory Branch U.S. COE, Regulatory Branch U.S. COE, Regulatory Branch 10867 E. Gull Lake Drive N.W. Army Corps of Engineers Centre 1114 South Oak Street 1554 Highway 2, Suite 2 Brainerd, MN 56401-9051 190 5th Street East La Crescent AN 55947-1338 Two Harbors, MN 55616 ' Phone: 218-829-8402 St. Paul, MN 55101-9051 Phone: 507-895-8059 Phone: 218-834-6630 Phone: 651-290-5375 WEB SITES: BWSR. www.bwsr.state.=.us U.S. ACOE: www.mvp.usace.arnry.mil DNR: wwwArs.state.rrm.us MPCA: www.pca.state.rnn.us Minnesota Local/State/Federal Application Fortes for Water/Wetland Projects ' Instructions, Page 2 ' NA -026620-036 (V.2.02 for MS WORD)10/29/04 Minnesota Local/State/Federal Application Form for Water/Wetland Projects For Internal Use Only Application No. Field Office Code Date Initial Application Received Date initial Application Deemed tete PART I: BASIC APPLICATION "See HEIP" directs you to important additional information and assistance in Instructions, Pagel. I. LANDOWNER/APPLICANT CONTACT INFORMATION (See Help 1) Name: Paul Oehme, City of Chanhassen Phone: 952-227-1100 Complete mailing address: 7700 Market Blvd, PO Box 147, Chanhassen, MN 55317 IA. AUTHORIZED AGENT (See Help 1A) (Only if applicable; an agent is not required) Name: Chadd Larson, Kimley Horn and Associates Phone: 651-645-4197 Complete mailing address: 2550 University Ave. W, St Paul, MN 55114 '2. NAME, TYPE AND SIZE OF PUBLIC WATERS or WETLANDS IMPACTED (Attach Additional Project Area sheets if needed) Name or I.D. # of Waters Impacted (if applicable; if known): (Check all that apply): []Lake ❑River ❑Wetland type ® 1 ❑ I ❑ 2 ❑ 3 ❑4 ❑ 5 ❑ 6 ❑ 7 ❑ 8 ' Indicate size of entire lake or wetland (check one): ® Less than 10 acres (indicate size: ) ❑ 10 to 40 acres ❑ Greater than 40 acres 3. PROJECT LOCATION (Information can be found on property tax statement, property title or title insurance): Project street address: S of Lyman Blvd, E of Audubon Fire #: City (if applicable): Chanhassen '/4 Section: Section: 22 Township #: I I 6 Range #: 23W Comity: Carver Lot #: Block: Subdivision: Watershed (name or #) Attach a simple site locator map. If needed, include on the map written directions to the site from a known location or landmark, and provide distances from known locations. Label the sheet SITE LOCATOR MAP. 4. TYPE OF PROJECT: Describe the type of proposed work. Attach TYPE OFPROJECT sheet if needed. Welland impacts totaling 0.56 acres and 1.12 acres of onsite Wetland mitigation 5. PROJECT PURPOSE, DESCRIPTION AND DIMENSIONS: Describe what you plan to do and why it is needed, how you plan to construct the project with dimensions (length, width, depth), area of impact, and when you propose to construct the project. This is the most important part of your application. See HELP 5 before completing this section; see What To Include on Plans (Instructions, page l). Attach PROJECTDESCRIP770Nsheet. ' Footprint of project: 0.56 acres or 24,393 square feet drained, filled or excavated. 6. PROJECT ALTERNATIVES: What alternatives to this proposed project have you considered that would avoid or minimize impacts to wetlands or waters? List at least TWO additional alternatives to your project in Section 5 that avoid wetlands (one of which may be`ho ' build" or "do nothing"), and explain why you chose to pursue the option described in this application over these alternatives. Attach PROJECTALTERNATMES sheet if needed. See Report for Project Alternatives 7. ADJOINING PROPERTY OWNERS: For projects that impact more than 10,000 square feet of water or wetlands, list the complete mailing addresses of adjacent property owners on an attached separate sheet. (See HELP 7) 8. PORTION OF WORK COMPLETED: Is any portion of the work in wetland or water areas already completed? ❑ Yes ®No. If ' yes, describe the completed work on a separate sheet of paper labeled WORK ALREADY COMPLETED. (See HELP 8) 9. STATUS OF OTHER APPROVALS: List any other permits, reviews or approvals related to this proposed project that are either pending or have already been approved or denied on a separate attached sheet. See HELP 9. ' 10. 1 am applying for state and local authorization to conduct the work described in this application. I am familiar with the information contained in this application. To the best of my knowledge and belief, all information in Part I is true, complete, and accurate. I possess the authority to undertake the work described, or I am acting as the duly authorized agent of the applicant. Signature of applicant (Landowner) Date Signature of agent (if applicable) Date ' This block must be signed by the person who desires to undertake the proposed activity and has the necessary property rights to do so. If only the Agent has signed, please attach a separate sheet signed by the landowner, giving necessary authorization to the Agent. ' Minnesota I.ocal/State/Federal Application Forms for Water/Wetland Projects Page l [1 I k 1 APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT (33 CFR 325) OMB APPROVAL NO. 0710-003 Expires Dec 31, 2004 The public burden for this collection of information is estimated to average 10 hours per response, although the majority of applications should require 5 hours or less. This includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send commeari regarding this burden estimate or any other aspect of this collection of inforroation, including suggestions for reducing this burden, to Department of Defense, Washington Headgarters Service Directmare oflafannation Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 222024302; and to the Office ofMaagement and Budget. Paperwork Redaction Pmjmt (0710-0003), Washingron DC 20503. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection offs formation if it does not display a currently valid OMB control number. Please DO NOT RETURN your form to either of these addresses. Completed applications trust be submitted to the District engincer having jurisdiction over the location of the proposed activity. PRIVACY ACT STATEMENT: Authorities: Rivers and Harbors Act. Section 10, 33 USC 403; Clean Water Act, Section 404,33 USC 1344; Marine protection, Research and Sanctuaries Act, 33 USC 1413, Section 103. Principal purpose: Information provided on this form will be used in evaluating the application for a pendL Routine uses: This information maybe shared with the Department o0ustice and other Federal, state, and local govermnent agencies. Submission of mgwsted information is wlmtuy; however, if information is not provided, the permit application cannot be evaluated nor can a normal be issued rFEMS 1 THROUGH 4 TO BE FHd.ED IN BY THE CORPS 1. APPLICATION NO. 12. FIELD OFFICE CODE 13. DATE RECEIVED 14. DATE APPLICATION COMPLETED YOU DO NOT NEED TO COMPLETE ITEMS 6-10 and 12-25 in the SHADED AREAS. All applicants must complete non -shaded items 5 and 26. If an agent is used, also complete items 8 and 11. This optional Federal form is valid for use only when included as part of this entire state application packer. 5. APPLICANT'S NAME 8. AUTHORIZED AGENT'S NAME AND TITLE (an agent is not required) Paul Oehme, City Engineer, City of Chanhassen Chadd Larson, PE, Kimley Hom and Associates ' 6. APPLICANT'S ADDRESS 9. AGENT'S ADDRESS 7, APPLICANT'S PHONE NO. - 10. AGENT'S PHONE NO. ' 11. STATEMENT OF AUTHORIZATION (if applicable,; complete only if authorizing an agent) I hereby authorize to act on my behalf w my agent in the processing of this application and to furnish, upon request, supplemental information in support of this permit application. 1 1 APPLICANTS SIGNATURE: DATE: 12. PROJECT NAME OR TIME (see instructions) 13. NAME OF WATERBODY-, IF KNOWN (if applicable) 14. PROJECT STREET ADDRESS (if applicable) 15. LOCATION OF PROJECT 16. OTHER LOCATION DESCRIPTIONS, IF KNOWN (see instructions) _ 17. DIRECTIONS TO THE SITE 18. NATURE OF ACTIVITY 19. PROJECT PURPOSE 20. REASON(S) FOR DISCHARGE 21. TYPES OF MATERIAL BEING DISCHARGED AND THE AMOUNT OF EACH TYPE IN CUBIC YARDS 22. SURFACE AREA IN ACRES OF WETLANDS OR OTHER WATERS FILLED 23. IS ANY PORTION OF THE WORK ALREADY COMPLETE? YES NO _ IF YES, DESCRIBE COMPLETED WORK. 24. ADDRESSES OF ADJOINING PROPERTY OWNERS, 25. LIST OF OTHER CERTIFICATIONS OR APPROVALS/DENIALS RECEIVED FROM OTHER FEDERAL, STATE OR LOCAL AGENCIES FOR WORK DESCRIBED IN THIS APPLICATION. 26. Application is hereby made for a permit or permits to authorize the work described in this application. I certify that the information in this application is complete and accurate. I further certify that I possess the authority to undertake the work described herein or am acting as the duly authorized agent of the applicant. Signature of applicant Date Signature of agent (if any) Date The application most be signed by the person who desires to undertake the proposed activity (applicant), of it may be signed by a duly authorized agent if the statement in Block 11 has been filled out and signed. 18 U.S.C. Section 1001 provides that., Whoever, in any manner within the jurisdiction of any department m agency of the United States knowingly and willfully falsifies, conceals, m covers up with any trick, scheme, m disguises a material factor makes any false, fictitious or fraudulent statements or representations m makes or uses any false writing or document knowing same to contain any false, fictitious or fraudulent statenents or entry, shall be fined not more than 510,000 or imprisoned not more than five years m both. ENG FORM 4345, Jul 97 EDITION OF FEB 94 IS OBSOLETE. (Proponent: CECW-OR) Minnesota LocallState/Federal Application Fortes for Water/Wetland Projects Page 2 FOR LGU USE ONLY: Determination for Part 1: ❑ No WCA Jurisdiction ❑ Exempt: No. _ (per MN Rule 8420.0122) ' ❑ No Loss: (A,B,...G, per MN Rule 8420.0220) ® Replacement required — applicant most complete Part II COMPLETE THE SECTION BELOW ONLY IF REPLACEMENT IS NOT REQUIRED: ' Application is (check one): ❑ Approved ❑Approved with conditions (conditions attached) ❑ Denied Comments/Findings: LGUojicial signature Date Name and Title For Agricultural and Drainage exemptions (MN Rule 8420.0122 Subps. 1 and 2B), LGU has received proof of recording of restrictions (per MN Rule 8420.0115): Date Document # assigned by recorder ' County where recorded LGU official signature Date Minnesota Local/State/Federal Application Forms for Water/Wetland Projects ' Page 3 Instructions For Part II Complete those portions of Part II: Replacement Plan Supplement for which information is readily available (such as location, existing land use, size of impact area, etc.) A person certified in wetland delineation must determine items pertaining to specific wetland impacts (wetland type, predominant vegetation, watershed name, etc.) Contact the local soil and water conservation district (SWCD) office for further information on ' obtaining such items. What to Include on Plans Detailed overhead views of replacement site(s) (Part Il), as well as profile view(s) of replacement sites) (Part 11), may be either hand drawn, computer generated or professionally prepared, as long as they contain all necessary information clearly, accurately, and in adequate detail. Please include specific dimensions whenever possible. You may also include photos, if you wish. Overhead views of Part II replacement site(s) should include the following items that pertain to your project: Property boundaries and/or lot dimensions. Location and extent of shoreline, wetlands and water. Location and dimensions of proposed project, structure or activity. Include length, width, elevation and other measurements as appropriate. ' Points of reference (such as existing homes, structures, docks or landscape features). Location of inlet and outlet structures. Indication of north. Location of spoil and disposal sites (if applicable). Areas of wetland and upland plants established. Profile views (side or cross-sectional views) should include the following items that pertain to your project: Location and dimensions of proposed project, structure or activity. Include elevation, depth, soil profile, side slope and other ' measurements as appropriate. Proposed water level elevation. Final Checklists Part Il: Replacement Plan Supplement ❑ Have you completed all of Part H (pages 3-5)? ' ❑ Did you (or your agent) sign Section 19 on page 5? ❑ Have you included the necessary attachments for Part II? Attachments must include: ❑ H the project includes any wetland banking (complete or partial), include Application for Withdrawal of Wetland Credits Form (Section 14) ® Ifthe project includes any project-specitic replacements (complete or partial), include: Description of Replacement Wetland(s) Construction (Section 15) Copy of vegetation management plan (Section 15) Scale drawing of overhead view or replacement wetland (Section 18) Scale drawing of profile view of replacement wetland (Section 18) Attachments may also include: ' ❑ Additional description of Wetland Impact Charts (Section 11) (if additional space was needed) ❑ Additional Description of Replacement Wetlands charts (Section 17) (if additional space was needed) ❑ Additional soils information for created replacement wetland(s) (Section 18) (if available) Note: To deposit surplus wetland credits in the State Wetland Bank, submit a Wetland Banking Application directly to your LGU (Section 16). Preparing Your Application for Mailing ® To apply for both state and Federal authorization, your application must include Part I (Page 1), the Federal application (Page 2), and attachments as indicated on Final Checklist for Part I (Instructions, Page 2). ® Your application must also include Part H (Pages 3-5) and additional attachments as indicated on Final Checklist for Part H (above). ® Make three copies of the entire application and all attachments. Keep the original, and mail the three copies to the appropriate local, state, and Federal agencies (see Instructions for Part I for addresses). ' Minnesota Local/State/Federal Application Forms for Water/Wetland Projects Instructions Page 3 PART H: REPLACEMENT PLAN SUPPLEMENT For assistance in completing Part!!, contact your Local Government Unit or a professional consultant 11. DESCRIPTION OF WETLAND IMPACTS: Complete the chart below: 1) Use one row of boxes for each wetland impact; 2) If you project has more than one wetland impact, reference you overhead view (part of Section 5) to this chart by identifying and labeling "first impact" and "second impact" on your overhead view; 3) If you are identifying only one wetland type within a given wetland impact arca, use the first dotted line and leave the others blank; 4) If you have chosen to identify more than ane wetland type within a given wetland impact area, use the extra dotted lines to indicate each wetland type, and identify predominant vegetation and size of impacted area for each separate wetland type within that impact area; 5) If you do not have access to some of this information, call you LGU u S WCD office for assistance. (Photocopy chart for more impacts, if needed.) DESCRIPTION OF WETLAND IMPACTS Wetland impact (as noted on overhead view) Watershed name or number (if known) County, Section, Township, Range Wetland type' Predominant vegetation in impacted wetland area Size of area impacted (in acres or square feet) Existing land use in project area (check all that apply) Bluff Creek Tl 16N 1 RCG 0.56 acres ❑ Housing R23W E] Commercial First ------------------ --------------- --------------- E] Industrial impact Sec 22 ❑ Parks/recreation areas ❑ Highways and ------------------- ------------------ --------------- associated rights-of-way ❑ Forested ® Farmsteads/agricultural ❑ Vacant lands ❑ Public and semi-public (schools/gov't facilities) SecondElAirports ------------------ ----------------- -------------- ❑ Extractive (gravel impact pits/quarries) ❑ Other: elf you are identifying only one wetland type within a given wetland impact area, use the first dotted line and leave the others blank. If you have chosen to identify more than one wetland type within a given wetland impact area, use the extra dotted lines to indicate each separate wetland type, and identify predominant vegetation and size of impacted area for each separate wetland type with that impact area. TOTALS OF AREA(S) IMPACTED FOR EACH WETLAND TYPE ON CHART (indicate acres M or square feet ❑) ' Type: 1: 0.56 IL: -2:— 3: _ 4:_ 5: 6:_ T_ 8:_ R:- 12. SPECIAL CONSWERATIONS: Are you aware of any special considerations that apply to either the impact site(s) or the replacement site(s)? ❑ Yes ® No (Examples: the presence of endangered species, special fish and wildlife resources, sensitive surface waters, or waste disposal site.) If YES, list and describe briefly. 13. SHORELAND IMPACT ZONE: Please identify each wetland impact site noted in Section 15 that is within 1000 feet of a lake or 300 feet of a river Minnesota I.ocal/State/Federal Application Forms for Water/Wetland Projects Page 4 1 14. HOW PROPOSED REPLACEMENT WILL BE ACCOMPLISHED: Indicate how proposed replacement will be accomplished (check only one box below and continue as indicated): ❑ A. Wetland banking only Complete Application for Withdrawal of Wetland Credits Form and include with your application. Copies of this farm are available from your LGU, or download a copy from www.bwsr.staw.nn.us Skip to Section 19, page 6 (You do not need to complete Sections 15-18). ® B. Project -specific replacement only Continue with Section 15 below. ❑ C. A Combination of wetland banking and project -specific replacement Complete Application for Withdrawal of Weiland Credits Form and include with your application. Copies of this forth are available from your LGU, or download a copy from www.bwsr.stae.mn.us Continue with Section 15 below. 15. DESCRIPTION OF REPLACEMENT WETLAND(S) CONSTRUCTION (Complete this section only if you marked Box B or Box C in Section 14 above): Describe in detail how replacement wetland(s) will be constructed. If several methods will be used, describe each method. Details should include the following: 1) type of construction (such as excavated in upland, restored by file break, restored by ditch block or revegetated); 2) type, sin and specifications of outlet structures; 3) elevations relative to Mean Sea Level or established benchmarks or key features (such as sill, emergency overflow or structure height); 4) what best management practices will be implemented to prevent erosions or site degradation; 5) proposed timetable for starting and ending the project; and 6) a vegetation management plan. Write this description on a separate sheet of paper labeled DESCRIPTION OF REPLACEMENT WETLAND CONSTRUCITON See report and attached plan for details 16. SURPLUS WETLAND CREDITS: If using project -specific replacement (Box B or Box C in Section 14 above), will the replacement result in any surplus wetland credits that you wish to have deposited in the State Welland Bank for future use? ❑ Yes ❑ No. If yes, submit a Wetland Banking Application directly to your LGU. Copies are available from your LGU, or download a copy froth www.bww.state.nn.us 17. DESCRIPTION OF REPLACEMENT WETLANDS: Complete the chart below: 1) Use one now of boxes for each wetland replacement site; 2) If your project has more that one wetland replacement site, reference your overhead view (part of Section 5) to this chart by identifying and labeling "first replacement site" and "second replacement site" on your overhead view; 3) If you are identifying only ane wetland type within a given replacement site, use the first dotted line(s) and leave the others blank; 4) If you have chosen to identify more than one wetland type in a given replacement site, use the extra dotted lines to indicate each separate wetland type, and identify types) of replacement credits and `restored or created" for each separate wetland type with that replacement site; 5) If you do not have access to some of the information, or if you do not know your replacement ratio, call your LGU or S WCD office for assistance. Photocopy chartfor more wetland replacements, if needed.) DESCRIPTION OF REPLACEMENT WETLANDS Identify Watershed County Section, Wetland Type(s) of replacement credits Restored Wetland name or Township, Type' fn acres or square feet) or replacement number created? site (if known) Range New Wetland Public Value Indicate (as noted on Credits (NWC) Credits (PVC) R or C overhead view) Name of Bluff Creek Carver T116 1 1.12 C First----------- R23 ---------------------- ----------------------- ------------ replacement siteSec 22 ---------- ---------------------------------------------- ------------- Name of Second----------- ---------------------- ------------------------ ------------- replacement site----------- --- -------- ------------------------ ------------- 'Circular 39 wetland types: Indicate], 11., 2, 3, 4, 5, 6, 7, 8, R, or U. If you are 1,12 identifying only one wetland type within a given wetland impact area, use the first TOTAL NWC TOTAL PVC dotted line and leave the others blank. If you have chosen to identify more than one wetland type within a given wetland impact area, use the extra dotted lines to indicate REQUIRED REPLACEMENT RATIO: each separate wetland type, and identify predominant vegetation and size of impacted areafor each separate wetland type within that impact area. (If known) 2.1 Minnesota Local/State/Federal Application Forms for Water/Wetland Projects Page 5 I& ADDITIONAL INFORMATION REQUIRED FOR PROJECT -SPECIFIC REPLACEMENT (Required only if you marked Box B or Box C in Section 14) For projects involving at least some project -specific replacement, include the following additional information: ® Two drawings to scale of the replacement wetland. Include both overhead view and profile (side view or moss -sectional view). See What to Include on Plans (Instructions, Page 3) for a detailed description of what should be included in these drawings. Without drawings, your application will be considered incomplete. ❑ For created replacement wetlands, include additional soils information (if available) that indicates the capability of the site to produce and maintain wetland characteristics. Note 1: For replacement wetlands located on pipeline easements, you need to receive endorsement of your project from both the easement holder and the Minnesota Department of Public Safety's Office of Pipeline Safety. Before start of construction, the owner of any utilities most be notified. The landowner or contractor is responsible for giving this notice by calling "Gopher State One -Call" at 652-454-0002 ('twin Cities Metro Area) or 1-800-252-1166 (all other locations). Note 2: For extensive or complex projects supplementary information may be requested at a later dated from one or more of the responding agencies. Such information may include (but not be limited to) the following: topographic map, water table map, soil borings, depth soundings, aerial photographs, environmental assessment and/or engineering reports. 19. SIGNED AFFIRMATION: FOR PROJECTS INVOLVING REPLACEMENT BY WETLAND BANKING ONLY. To the best of my knowledge and belief, all information in Part II is true, complete and accurate; and I affirm that the wetland losses will be replaced via withdrawal from an account in the State Wetland Bank. FOR PROJECTS INVOLVING EITHER PROJECT -SPECIFIC REPLACEMENT ONLY OR A COMBINATION OF WETLAND BANKING AND PROJECT -SPECIFIC REPLACEMENT: Part A: The replacement wetland. I affirm that the replacement wetland was not: Previously restored or created under a prior approved replacement plan or permit; AND Drained or filled under an exemption during the previous 10 years; AND Restored with financial assistance from public conservation programs; AND Restored using private funds, other than landowner funds, unless the fonds are paid back with interest to the individual or organization that funded the restoration; and the individual or organization notifies the local government unit in writing that the restored wetland may be considered for replacement. Part B: Additional assurances (check all that apply): ® The wetland will be replaced before or concurrent with the actual draining or filling of a wetland. ❑ An irrevocable bank letter of credit, performance bond, or other acceptable security has been provided to guarantee successful completion of the wetland replacement. ❑ The wetland losses will be replaced via withdrawal from an account in the State Wetland Bank. Part C. For projects involving any project -specific replacement: Within 30 days of either receiving approval of this application or beginning work on the project, I will record the Declaration of Restrictions and Covenants on the deed for the property on which the replacement wetland(s) will be located; and I will at the same time submit proof of such recording to the LGU. To the best of my knowledge and belief, all information in Part B is true, complete and accurate; and 1 affirm all statements in Part A and C, as well as checked assurance(s) in Part B. Signature or applicant or agent FOR LGU USE ONLY Replacement plan is (check one): ❑ Approved Date ❑Approved with conditions (conditions attached) ❑ Denied LGUofficial signature Date LGU has receive evidence of title and proof of recording of Ieclarstion of Restrictions and Covenants for Replacement Wetland: County where recorded Date Docunma # assigned by recorder LGUofficial signature Date Minnesota Local/State/Federal Application Forms for Water/Wetland Projects Page 6 Mitigation Plan m M& m m m m w mIsm m m m m w =* m I I 1 1 I 1 PROJECT SUMMARY BASIN 8 WETLAND MITIGATION PLAN Applicant: City of Chanhassen, Paul Oehme, PE Agent: Kimley-Horn and Associates, Inc., Chadd Larson, PE Suite 345N, 2550 University Ave. W St. Paul, MN 55114 Report by: Houston Engineering, Inc., Sara Beth Scadlock Suite 106, 10900 73rd Ave. N Maple Grove, MN 55369 Site Location: South of Lyman Blvd. and East of Audubon Road in the City of Chanhassen, 2005 MUSA Area, TI 16N, R23W, Section 27, Carver County WCA LGU: City of Chanhassen Date: April, 2006 Description: The City of Chanhassen proposes to impact 0.56 acres of Type 1 wetland, Basin 8, for the purpose of constructing public infrastructure for the City of Chanhassen's 2005 MUSA expansion area (City Project No. 06-05). Wetland mitigation: Proposed onsite wetland mitigation includes the construction of a new wetland area adjacent to existing wetland area. The area of proposed onsite wetland creation is located on the east side of Bluff Creek adjacent to the east boundary of Basin 5. The wetland creation will result in 1.12 acres of New Wetland Credit (NWC) on site. April 2006 —Basin 8 Mitigation Plan Basin 8 Wetland Mitigation Plan i I. INTRODUCTION The City of Chanhassen is proposing to construct infrastructure associated with their ' 2005 MUSA expansion area (City Project No. 06-05). This site, partially agricultural land, is located south of Lyman Blvd and east of Audubon Road in the City of Chanhassen, and is in the Riley Purgatory Bluff Creek Watershed District. T116N, R23W, Sec. 22. Carver County, Minnesota (Figure 1). This public infrastructure project is proposed for the purpose of meeting the needs of future development as a part of the City of Chanhassen's 2005 MUSA area expansion. As a part of the project development an Alternative Urban Area Review (AUAR) was ' completed for the entire project area. This AUAR identified the need for Bluff Creek Boulevard to travel through the project area and intersect with Audubon Road to the west and Powers Boulevard to the east. In addition, the AUAR identified the need for a south connector road to connect Bluff Creek Boulevard to Pioneer Trail to accommodate future Itraffic demands. One wetland (Basin 8) was identified and delineated for this section of the project on November by Houston 1, 2005. Previous delineations on this site for this project Engineering include Basins 1-6 which were delineated in a previous report presented to the City of Chanhassen on May 26, 2005 and Basin 7 delineated in a previous report presented to the City of Chanhassen on October 28, 2005. Figure 2 shows all the existing wetlands delineated by Houston Engineering for this project (Basins 1-8) and Figure 3 is a detailed delineation map of Basin 8. A full wetland delineation report including NWI maps, soils maps, and data sheets for Basin 8 is attached (Attachment A). Other wetlands associated with other portions of the MUSA area expansion were delineated by other consultants and are not discussed in this report. The infrastructure project addressed in this report would impact a total of 0.56 acres of wetland (Figure 4). This wetland was classified as a Type 1. Using the Cowardin system ' April 2006 — Basin 8 Mitigation Plan 2 I I I I 1 the wetland is a palustrine system with emergent vegetation that has a seasonally flooded regime and is partially drained (PEMCd). The following pages represent the sequencing discussion and describe the proposed wetland mitigation plan of expansion of Basin 5 in more detail. Figure 5 and 6 show the proposed on-site mitigation area and grading plan. H. SEQUENCING DISCUSSION The following section discusses wetland avoidance, impact, minimization, impact reduction and replacement in compliance with Minnesota Wetland Conservation (WCA) requirements. This sequencing discussion includes a summary of alternatives that were considered and changes that were made to the development plan to minimize wetland impacts. All avoidance and minimization options considered met the following goals for the development. • Provide for sufficient residential housing units to compensate for infrastructure expenses (roads, utilities, ponds, etc.) construction costs, and land costs. • Provide safe access to the site consistent with City planning. • Minimize direct, indirect, and long-term impacts to on-site wetlands and other natural resources on site. The following alternatives were evaluated within the criteria and constraints described above. Wetland Avoidance Using WCA guidelines, the wetland avoidance alternatives considered and evaluated included the no -build and alternate project designs that avoid all wetland impacts. Alternative Project Designs The proposed Bluff Creek Boulevard roadway alignment was chosen from numerous alternatives through multiple meetings with adjacent property owners (Attachment B), developers, and the City. The wetland, Basin 8, that is impacted by the construction of Bluff Creek Boulevard is located at the intersection with the future south connector roadway to Pioneer Trail. The location of this intersection was determined based on input from adjacent property owners and evaluating the best design alternatives based on the proposed roadway alignment and profile. This will be a roundabout intersection April 2006 — Basin 8 Mitigation Plan 3 1 I [1 I I I 1 which will enhance the overall roadway. The current roadway alignment minimizes flood plain and wetland impacts. Alternative project designs that avoid wetland impacts and allow the applicant to effectively utilize buildable upland areas of the site are not feasible. Other intersection locations were evaluated however the current location was selected based on the desire to accommodate both adjacent properties owners' site development plans and minimize the disturbance to other wetlands and natural land features. A conventional tee intersection was considered as an option however there was strong support to enhance the roadway with a roundabout intersection, which also played a role in the intersection location determination. No -Build Alternative The no -build alternative would avoid direct impacts to Basin 8, but would not allow the City of Chanhassen to utilize the surrounding properties as identified in the AUAR The City of Chanhassen Comprehensive Plan indicates that a residential development would be an appropriate use for the surrounding properties given the access to existing roads, other developments in the area and planned future land uses. Single family home development is compatible with adjacent land use. Abandoning the proposed project fails to meet the project goals of the City of Chanhassen and does not make use of available space within the City. Logistically, the development of this project represents safe and efficient use of available property. For those reasons the no -build alternative was not considered feasible or prudent and was rejected. It was determined that practical and feasible alternative project designs that avoid all direct impacts to wetland areas are not present within the scope of the development, project goals, and site constraints. Wetland Impacts The proposed project plan (Figure 4) attempts to balance efficient land use and minimize wetland and other environmental impacts during and after construction of the proposed project. Wetland Basin 8 was identified for this project (Figures 2 and 3). Wetland April 2006 — Basin 8 Mitigation Plan 4 impacts, which are confined to only Basin 8, are necessary for construction. Impacts ' total 24,393 sq ft (0.56 acres). ' Wetland Impact Rectification No temporary impacts are proposed with this plan. hnpact rectification does not apply. Summary of Unavoidable Impacts ' The proposed plan represents a reasonable effort to accommodate the desired development while minimizing wetland impacts, and replacing unavoidable impacts where appropriate. The proposed plan results in 0.56 acres of unavoidable fill. Impacts to wetlands have been minimized to the extent possible within the context of project ' goals. The wetland impact area is dominated by reed canary grass. M. WETLAND MITIGATION PLAN Replacement Requirement Proposed direct wetland impacts involve filling 24,393 sq ft (0.56 acres) of Basin 8 for a ' roadway (Figure 4). The City of Chanhassen and the WCA wetland rules require wetland replacement at a 2:1 ratio. Wetland mitigation areas will be constructed by excavation ' down to elevations equal to the adjacent existing wetland selected for an appropriate mitigation area which is Basin 5. Table 1— Impact and Mitigation Summary ' Proposed Wetland Impact - Basin 8 (Type 1) Sq Ft Acres 24,393 0.56 2:1 Replacement Ratio ' Sq Ft Acres 48,786 1.12 Onsite New Wetland Creation (sq it) - Basin 5 (Type 1) Sq Ft Acres 48,486 1.12 1 ' April 2006 — Basin 8 Mitigation Plan 5 On -Site Mitigation Of the several sites considered and after discussions with other developers working on the project and the City of Chanhassen staff the proposed onsite wetland mitigation area will be excavated from upland adjacent to Basin 5 (Figures 5 and 6). Excavation using heavy and small equipment will expand the wetland area. Runoff from backyards is planned to enter the wetland basins after sediments and nutrients have been removed by the upland buffer areas. Buffer areas are designed between the proposed bike path and the created wetland area. The wetland creation area will be excavated to match the existing elevation of Basin 5 and graded to blend into the existing topography of the site. This will improve the success for wetland hydrology in the created wetland area. A herbicide will be applied to the soils and will be prepared for seeding of wetland vegetation. After final grading the replacement wetland will be seeded with BWSR seed mix No. 2 or equivalent at a minimum suggested rate of 81bs/acre and a 10 foot buffer area will be seeded with BWSR seed mix No. 5 to assist with slope stabilization and protect the created wetland from upland species encroachment (Attachment Q. Seeding will be according to specifications with clean mulch tacked to the ground. The wetland is expected to develop to the 871 contour and will receive hydrology from the seasonal flooding of Bluff Creek as well as some groundwater and surface water influences. See wetland mitigation drawings (Figures 5 and 6) for grading details. The wetland will be maintained as needed and as suggested in Attachment D. Other proposed onsite mitigation areas were eliminated due to their lack of hydrology, proximity to the proposed developments, and locations of proposed stormwater ponds by other developers. April 2006 — Basin 8 Mitigation Plan ' Monitorine Plan Requirements for monitoring mitigation wetlands as described in WCA will be followed. ' The WCA rules require that an annual report be submitted for 5 years to ensure the success of the created wetland areas. The report must contain a description of the project ' location, size, current wetland type and desired wetland type; a comparison of the as -built specifications versus the design specifications; hydrology measurements; plant communities observed; and color photographs of the project area. Annual reports should be submitted to the City of Chanhassen. ' April 2006 — Basin 8 Mitigation Plan 7 Figures m mom m w m m m s,® m m ■■ m m m` m Figure 1 Site Base Map I 1 Figure 2 Wetland Delineation Map Figure 3 Basin 8 Delineation 11 1 1 11 1 1 1 [1 1 Figure 4 Proposed Roadways Map AVAIQVOH HOdlOH'PIOO lsah-ISVH 50-v0 'oN ,LOSro2Id X113 SINSYMOHdRI NOISNVdXH VH2IV VSIIPI Soot N3SSVHNVHo dO ALIO �u5-ps 11W p if! ��R tl105A�n'1MC l5 <1V�1. 91KY) O! 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'SNOLLIONOO 01311 01 3n0 38niXIW 033 JO \ IN3W30nd ONIO8VO38 SNOLLS3110 3W 383HL JI 03NOO AJLLON 01 8010Ya1N00 aOMO Ol 1N3a NUS SY aOJ 5310N NIUY803X3 ItlNOLLIOW aNY 530Vaa 030dOtld OW 9NLLS1X3 llV a0J NYId 9NIOVaa 33 S31ON IVU3N30 133J Ni 3IYO5 lV1NOZjWH ® / 091 09 OY 0 j 1 / / '99LI-ZSZ-009-I \ NO ZOOO-t9Y (L99) TNO s3LLnan mWnH JO SNOUVXn NOJ .T O 3NO 31VIS s3Hd00. 10Y1N00 TON MR 2ISMH-NOUV011i I ONV'LL3M ?'ON MW HSIAH-NOISVJISIN (INVZL3M LLLLj aNV'I,L3M ONI,LSIX3 NIV'IdaoOU HV7A-OOT QNaDal // \�\ ll \ Y ..SONYl13M .._. �g:;f .v f CD rn N A N J O I 0 0 0 m 0 _ m 3: 0 suois)naa 0400 ON 0 0 0 o rn N A Figure 6 Cross Sections of Proposed Mitigation Area f Tl\ . .... . . . . . . . . nnm� a �A 0+00 1+00 0+00 1+00 0+00 1+00 WETLAND MITIGATION CROSS SECITON A -A WETLAND MITIGATION CROSS SECITON B -B WETLAND MITIGATION CROSS SECITON C -C I� i �, 0 40 80 160 / HORIZONTAL SCALIE N FEET CONTACT 'GOPHER STATE ONE CALL' FOR LOCATIONS OF BURIED UTILITIES. CALL (651) 454-0002 OR 1-800-252-1166. LEGEND El 100 -YEAR FLOODPLAIN El EXISTING WETLAND ® WETLAND MITIGATION-BWSR MIX NO.2 ® WETLAND MITIGATION-BWSR MIX NO.5 No. Date REvi Sio-s App. DRAWING NAME I HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION CITY OFCHANHASSEN I_ SHEET 2 OF 2 BLUFF_NElLAN05 X SECTION OR REPORT WAS PREPARED BY ME OR UNDER MY CITY PROJECT ()6—DS DIRECT SUPERMSION AND THAT I AM A DULY BLUFF CREEK LOWLANDS LICENSED PROFESSIONAL ENGINEER UNDER THE SHEET NO. DESIGNED BY. SBS LAWS OF THE STATE OF MINNESOTA. PUBLIC INFRASTRUCTURE IMPROVEMENTS S.A.P. 194-125-001 00 DRAWN BY: DJLBID PACKAGE CHECKED BY: NAME Kmley-HornPZ;YTON flTWCa AC S, A. F. DATE, and A�,,,,da`esIInc. X (�Crff �OF BLUFF CREEK BOULENAU) 'I PROJECT NO. PROJ. NUM Uf1JJlhA l DATE: MN UC. NO. X -"""—' BASCQB MITIGATION COUNTY PROJECT 1 5O CROSSh4TTIGONS ai Attachment A Basin 8 Delineation Report i tR< 'r re ?' v a 1 r I�i C Presented to: 41 Kimley-Horn and Associates, Inc. Suite 345N, 2550 University Ave. W St. Paul, MN 55114 Presented By: Houston Engineering, Inc. 10900 73rd Avenue North, Suite 106 Maple Grove, MN 55369 r, rNovemuer iu, i-uun M r �' la • '• Y :i14 �1 a�. Table of Contents Delineation Report 1.0 Wetland Delineation Report Basin 8 1.1 Project Overview 1.2 Delineation Summary 1.3 Additional Sources 2.0 Wetland Delineation Methodology 2.1 Onsite Methods 2.2 1987 Corps of Engineers Manual 2.3 Wetland Plant Indicator Designations 2.4 Vegetative Dominance and Strata 2.5 National Wetland Inventory Q -M) 2.6 Symbols used in the Wetland Classification System Attachments Attachment A — Basemap Attachment B — Actual Wetland Map Attachment C — Transect Locations Attachment D — Delineation Data Sheets Attachment E — Site Photos Attachment F —NWI Map Attachment G — SSURGO Soils 1.1 Project Overview Owner/Applicant: Kimley-Horn and Associates, Inc. Presented by: Sara Beth Scadlock, Houston Engineering Inc. Houston Engineering, Inc. is pleased to provide this report regarding the field investigation conducted on November 1, 2005 to inspect the site located in the 2005 MUSA Area, east of Bluff Creek in Carver County, Minnesota (Attachment A). If there are questions regarding this report please call Sara Beth Scadlock at 763-493-4522. This site, partially cropland, is located south of Lyman Boulevard and east of Audubon Road. The purpose of the site review was to identify and delineate one of the existing wetlands (Basin 8) located south of Bluff Creek in Section 27. Basins 1-6 which are located adjacent to Bluff Creek were delineated in a previous report presented by Houston Engineering dated May 26, 2005 and Basin 7 located east of Bluff Creek was delineated in a previous report presented by Houston Engineering dated October 28, 2005. 1.2 Delineation Summary There was one wetland area identified for this delineation project (see map in Attachment B). This wetland was classed using the Cowardin system. Basin 8 is approximately 0.56 acres and is classified as a palustrine system with emergent vegetation that has a seasonally flooded regime and is partially drained (PEMCd). Transect locations are shown in Attachment C. Data sheets for the sampling points are in Attachment D. Basin 8 is approximately 0. 56 acres and is classified as a palustrine system with emergent vegetation that has a seasonally flooded regime and is partially drained (PEMCd). Common vegetation identified at the upland sites for the property was soybeans that had been recently harvested. The eastern side of Basin 8 is adjacent to a farm field and the western half of Basin 8 follows a tree line almost exactly north/south. Site photos are found in Attachment E. Common vegetation in Basin 8 is reed canary grass transitioning to smartweed and ragweed before reaching the farmed area. The eastern side of Basin 8 is adjacent to a soybean field and the western side of Basin 8 follows a tree line almost exactly north/south. Soil textures at the upland and wetland sites range from clay to clay loam. The upland ' sites are generally poorly to very poody drained soils with no free water detected in the soil pits. The upland sites lack hydrology indicators necessary to meet the wetland criteria and are sloping so that water would likely runoff towards the wetland. The wetland sites are generally very poorly drained with no free water found in the pit however due to the late season timing of this delineation this is to be expected. There were pockets of saturated soil found towards the center of the basin. The source of water is ponding due to MUSA Area Wetland Delineation Basin 8 Kimley-Horn and Associates November 10, 2005 1 precipitation. There is a large watershed of at least 8-10 acres contributing to the hydrology of the basin. 1.3 Additional Sources The NWI map (Attachment F) indicates that Basin 8 is a palustrine system with emergent vegetation that has a seasonally flooded regime, and is partially drained (PEMCd). Soils mapped within the surrounding area of the site, according to Soil Survey Geographic data (SSURGO — Attachment G) include Canisteo silty clay loam, Cordova -Webster Complex, Glencoe day loam, Hamel loam, Houghton and Muskego, Kilkenny -Lester loams, Klossner muck, Le Sueur-Lester loams (14% slopes) Lester-Killkenny clay loams (12- 25% slopes), and Lester -Kilkenny loams (12-25% slopes) (See Attachment G for detailed soil map). Some soils on the site are considered eroded. Some of the components or inclusions of these series are identified as hydric soils. 2.1 Onsite Methods The wetland boundary, sampling transects and paired upland/wetland sampling points were logged using aerial photo review, and a site visit. A transect was recorded with an upland data point and a wetland data point at two locations on Basin 8. In addition to the data sheets recorded, the entire wetland boundary was walked and the soils were field verified by Houston Engineering staff. 2.21987 Corps of Engineers Manual Delineation of existing wetlands was completed utilizing the Routine On -Site Determination Method as described in the 1987 Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1. Wetlands were classified using the Cowardin system as described in Classification of Wetlands and Deepwater Habitats of the United States (Cowardin at. al., 1979). Paired point sampling for vegetation, hydrology and soils was utilized to determine if the site meet the criterion for a wetland community. 2.3 Wetland Plant Indicator Designations Plant species are cited by scientific names and wetland indicator status according to the National List of Plant Species that Occur in Wetlands: North Central, Region 3 (USFWS Biological Report 88(26.3); May 1988). A plus (+) or minus (-) sign attached to the indicator status for a species indicates that the species is on the high (+) or low (-) side of the frequency range for its indicator status. The indicator categories are as follows: OBLIGATE WETLAND (OBL): Species occurs almost always (>99%) in wetlands under natural conditions. FACULTATIVE WETLAND (FACW): Species usually occurs in wetlands (67-99%) but occasionally found in non -wetlands. MUSA Area Wetland Delineation Basin 8 Kimley-Ham. and Associates November 10, 2005 FACULTATIVE (FAC): Species equally likely to occur in wetlands and non -wetlands (34- 64%). FACULTATIVE UPLAND (FACU): Species usually occurs in non -wetlands (67-99%) but occasionally found in wetlands (1-33%). OBLIGATE UPLAND (UPL): Species occurs almost always (>99%) in non -wetlands under natural conditions. 2A Vegetative Dominance and Strata For an area to be a jurisdictional wetland, more than 50% of the dominant vegetation from all strata (herbaceous, shrub, sapling, tree, vine) must be OBL, FACW, and/or FAC, under normal and undisturbed conditions. Dominance refers to the spatial extent of a species that is observed in the field. The dominant plant species for a stratum includes the plant species that immediately exceeds 50% of the total dominance for a given stratum, plus any additional species comprising 20% or more of the total dominance. Strata categories for which dominance is determined include: HERBACEOUS (HERB): Includes all herbaceous plants (grass, sedge, (orbs, ferns, etc.). SHRUB: 3 to 20 feet tall including multi -stemmed, bushy shrubs, trees and saplings. SAPLING: 0.4 to >5 inches DBH and >20 feet or taller. TREE: >5 inches diameter at breast height (DBH) and >20 feet. VINE: Includes all woody vines. 2.5 National Wetlands Inventory (NWI) The National Wetlands Inventory (NWI) of the U.S. Fish & Wildlife Service produces information on the characteristics, extent, and status of the Nation's wetlands and deepwater habitats. NWI maps are compiled through manual photo -interpretation of aerial photography supplemented by soil surveys and field checking of wetland photo signatures. All photo -interpretable wetlands are mapped. In the treeless prairies, 1/4 acre wetlands are mapped. In forested areas, small open water and emergent wetlands are mapped. In general, the minimum mapping unit is from 1 to 3 acres depending on the wetland type and the scale and resolution of the source aerial photography. In regions of the country where evergreen forested wetlands predominate, wetlands smaller than 3 acres may not be mapped. A detailed site visit and historical analysis of a single site may result in a revision of the wetland boundaries established through photographic interpretation. In addition, some small wetlands and those obscured by dense forest cover may not be included in this dataset. The wetland classification system is hierarchical, with wetlands and deepwater habitats divided among five major systems at the broadest level. The five systems include Marine (open ocean and associated coastline), Estuarine (salt marshes and brackish tidal water), Riverine (rivers, creeks, and streams), Lacustrine (lakes and deep ponds), and Palustrine (shallow ponds, marshes, swamps, sloughs). Systems are further subdivided into subsystems which reflect hydrologic conditions. Below the subsystem is the class which describes the appearance of the wetland in terms of vegetation or substrate. Each Gass is further subdivided into subclasses; vegetated subclasses are described in terms of life form and substrate subclasses in terms of composition. The classification system also MUSA Area Wetland Delineation Basin 8 November 10, 2005 11 Kimley-Horn and Associates includes modifiers to describe hydrology (water regime), soils, water chemistry (pH, salinity), and special modifiers relating to man's activities (i.e., impounded, partly drained). ' 2.6 Symbols used in the wetland classification system ' SYSTEM: P — Palustrine L — Lacustrine CLASS: RB — Rock Bottom UB — Unconsolidated Bottom EM — Emergent SS — Scrub -Shrub ' FO — Forested OW — Open Water MODIFIERS: A— Temporarily flooded B — Saturated ' C — Seasonally flooded D — Seasonally well drained E — Seasonally saturated F — Semipennanently flooded G — Intermittently flooded H — Permanently flooded SPECIAL MODIFIERS: b — beaver d — partially drained/ditched f—farmed s — spoil x — excavated EXAMPLES: PEMCd: Palustrine, emergent vegetation, seasonally flooded, partially drained/ditched. PF01 E: Palustrine, forested with broad-leaved deciduous trees, seasonally saturated. MUSA Area Wedand Delineation Basin 8 Kimley-Horn and Associates November 10, 2005 Attachment A Location of Project Site 11 Cl J yi _ wx in °lk ew •�_— nr - .l J � �nY r r _ 4 E �e a Q O— Z' Q q 6 2 yp =r CD U w E E $ S m w@ R N LL$ m N m O O o•R O En Fu 7 N C N 0 » 7 N U U o t mQ' �0030I Amo J yi _ wx in °lk ew •�_— nr - .l J � �nY r r _ 4 Attachment B Wetland Delineation Map I Attachment C Transect Locations i a@ Og°g y Ea c L d 0 c � A v� 001 m � � i Attachment D DATA FORM ROUTINE WETLAND DETERMINATION (1QR7 Cr)F. WM..& I)Aineafinn Mama) Project Site: Bluff Creek, Chanhassen, MN Date: Nov. 12005 Applicant/Owner. Kimle -Horn and Associates, Inc. County: Carver Investigator(s): Sara Beth Scadlock State: Minnesota Do Normal Circumstances exist on the site? Yes Water -borne sediment deposits FAC -Neutral Test Is the site significantly disturbed (Atypical Situation)? No Basin #: Basin 8 Type of Disturbance? Transect ID: 1 Is the site a potential Problem Area? No Site ID: Wetland VEGETATION Dominant Plant Species %Cover Indicator Stratum Dominant Plant Species %Cover Indicator Shatum Phalari'ss arundinacea 100 FACW+ Herb Nf dominant ies that are OBL, FACW, and/or FAC? 100% ,yd= h 'c Ve=tafion criteria met? Yes Notes: [ XmnvuV y Slope (%) Dramage Class Primary Indicators: Secondary Indicators (2 or more required): Surface water (inundated) Water stained leaves Soils saturated in upper 12 inches _ _ Morphological plant adaptations Drift lines x Oxidized root channels in upper 12 inches Water -borne sediment deposits FAC -Neutral Test Wetland drainage patterns _ Other Water marks _ x Soil Survey x Landscape position Field Observations: x NWI Surface water depth inches x Air photos Depth to saturation inches Depth to water in pit inches Notes: Pockets of saturation were found however due to the timing of this delineation saturation was not expected Soil Parent Material Till Landscape Position Toe slope Slope (%) Dramage Class 2% Poorly Drained Profile Descri tions: Depth (in) Texture Matrix Color Color Mottles % Size 0-8 Clay loam 10YR 4/1 IOYR 52 3-5% Fine IOYR 5/4 2-3% Fine, root channels 8-18 Clay loam l OYR 2/1 IOYR 52 3-5% Fine IOYR 5/4 5-6% Fine, root channels Hydric Soils Yes Present? Field Indicator(s)? F3 — Depleted Matrix Notes: WETLAND DETERMINATION Hydrophytic Vegetation Criteria Met? Yes Welland Hydrology Present? Yes Is the Sample Point a Wetland? Yes Hydric Soils Present? Yes Wetland Type? PEMCd Notes: DATA FORM ROUTINE WETLAND DETERMINATION (19X7 COE Wetlands Delineation Manual) Project Site: Bluff Creek, Chanhassen, MN Date: Nov 1 2005 Applicant/Owner: Kimle -Horn and Associates, Inc. County: Carver Investigator(s): Sara Beth Scadlock State: Minnesota Do Normal Circumstances exist on the site? Yes Water -bonne sediment deposits _ FAC-Neutml Test Is the site significantly disturbed (Atypical Situation)? No Basin #: Basin 8 Type of Disturbance? Transect ID I Is the site a potential Problem Area? No Site ID: Upland VF.r KTATrnW Dominant Plant Species % Cover Indicator Stratum Dominant Plant % Indicator Stratum Species Cover S bean crop 1000/0 Secondary Indicators (2 or more required): Surface water (inundated) Water stained leaves Soils saturated in upper 12 inches _ _ Morphological plant adaptations Drift lines Oxidized root channels in upper 12 inches Water -bonne sediment deposits _ FAC-Neutml Test Wetland drainage patterns _ Other %of dominant species that are OBL, FACW, and/or FAC.) 00/0 Is Hydrophytic Ve etation criteria met? No Notes: _ n i "MULAAj if Primary Indicators: Secondary Indicators (2 or more required): Surface water (inundated) Water stained leaves Soils saturated in upper 12 inches _ _ Morphological plant adaptations Drift lines Oxidized root channels in upper 12 inches Water -bonne sediment deposits _ FAC-Neutml Test Wetland drainage patterns _ Other Water marks _ Field Observations: Surface water depth inches _ Depth to saturation inches IOYR 3/2 Depth to water in pit inches _ _ Notes: No hydrology indicators were observed. Soils are damp, no pockets of saturation. Soil Parent Material Till Landscape Position Toeslope Slope (%) Drainage Class 3% Poorly drained Profile Desai tions: Depth (in) Texture Matrix Color Color Mottles % Size 0-10 Clay loam I OYR 2/1 10-16 Sandy clay loam IOYR 3/2 1 OYR 5/6 1-2% Fine IOYR 5/2 I-2% Fine 16-21 Clay loam IOYR 3/2 IOYR 5/6 8-100/6 Coarse IOYR5/1 5-10% Coarse Hydric Soils No Present? Field Indicator(s)? Notes: Soil is damp but not saturated, no crop damage observed on the upland end of transect There is some mixing from plowing. WETLAND DETERMINATION Hydrophytic Vegetation Criteria Met? No Wetland Hydrology Present? No Is the Sample Point a Welland? No Hydric Soils Present? No Welland Type? Notes: DATA FORM ROUTINE WETLAND DETERMINATION (I 9R7 (7.f1F. Wetlnndc i)elineatinn Mannnh Project Site: Bluff Creek, Chanhassen, MN Date: Nov 1 2005 Applicant/Owner. Kimle -Horn and Associates, Inc. County: Carver InvestiS): Sara Beth Scadlock State: Minnesota Do Normal Circumstances exist on the site? Yes Water -borne sediment deposits FAC -Neutral Test Is the site significantly disturbed (Atypical Situation)? No Basin #: Basin 8 Type of Disturbance? Transect ID: 2 Is the site a potential Problem Area? No Site ID: Wetland VF.CF.TATION Dominant Plant Species % Cover Indicator Stratum Dominant Plant Species % Cover Indicator Stratum Phalaris arundinacea 1000/0 Herb % of dominant species that are OBL, FACW, and/or FAC? 100'/0 Is Hydrophytic VeRetation criteria mel? Yes Notes: n YUKULUIiY Till Toeslope Primary Indicators: Secondary Indicators (2 or more required): Surface water (inundated) Water stained leaves Soils saturated in upper 12 inches _ _ Morphological plant adaptations Drift lines x Oxidized root channels in upper 12 inches Water -borne sediment deposits FAC -Neutral Test Wetland drainage patterns _ Other Water marks _ x Soil survey 06 Clay x NWI Field Observations: x Air photos Surface water depth inches Fine, root channels Depth to saturation inches _ Depth to water in pit inches _ 5% Notes: There was no saturation observed however due to the late season timing of this delineation this is expected. SOEI.S Soil Parent Material Landscape Position Till Toeslope Slope (%) Drainage Class 0-3% Very Poorly Drained Profile Descri tions: Depth (in) Texture Matrix Color Color Mottles % Size 06 Clay loam IOYR 4/3 & 4/1 IOYR 5/6 2-3% Fine, root channels IOYR 5/6 5% Fine 6-14 Clay loam 10YR4/2 10YR5/2 5-10% Medium IOYR5/6 5-10% Medium Hydric Soils Yes Present? Field Indicator(s)? F3 — Depleted Matrix Notes: WETLAND DETERMINATION Hydrophytic Vegetation Criteria Met? Yes Wetland Hydrology Present? Yes Is the Sample Point a Wetland? Yes Hydric Soils Present? Yes Wetland Type9 PEMCd Notes: DATA FORM ROUTINE WETLAND DETERMINATION (19R7 COF. Wetlands Delineatinn Maraud) Project Site: Bluff Creek, Chanhassen, MN Date: Nov 1 2005 Applicant/Owner: Kimi -Horn and Associates, Inc. County: Carver Investigator(s): Sara Beth Scadlock State: Minnesota Do Normal Circumstances exist on the site? Yes Depth (in) Texture Matrix Color Is the site significantly disturbed (Atypical Situation)? No Basin #: Basin 8 Type of Disturbance? Transect ID: 2 Is the site a potential Problem Area? No Site ID: Upland VEGETATION Dominant Plant Species %Cover Indicator Stratum Dominant Plant % Indicator Stratum Species Cover Scybem nqp 100'/0 Slope (%) 0-3 Drainage Class Poorly Ragweed 5% Profile Descri tions: Depth (in) Texture Matrix Color Mottles Color % Size % of dominantspecies that are OBL, FACW, and/or FAC? 00/. IS HydrophyticVe etation criteria met? No Notes: No crop damage observed on the upland end of transect. 6-12 Clay n1unVl.Vl17 Primary Indicators: _ Surface water (inundated) _ Soils saturated in upper 12 inches _ Drift lines _ Water-bome sediment deposits _ Wetland drainage patterns Water marks Field Observations: Surface water depth _ Depth to saturation _ Depth to water in pit Notes: Soils are damp. SOILS inches inches inches Secondary Indicators (2 or more required): _ Water stained leaves _ Morphological plant adaptations x Oxidized mot channels in upper 12 inches _ FAC -Neutral Test Other Soil Parent Material Landscape Position Till Toeslope Slope (%) 0-3 Drainage Class Poorly drained Profile Descri tions: Depth (in) Texture Matrix Color Mottles Color % Size 0-6 Clay loam 10YR 3/3 & 3/1 6-12 Clay loam 10YR 3/1 IOYR 5/4 1-3% Very fine 12-20 Clay lOYR 3/2 1OYR 4/4 10-15% Medium 20+ Clay IOYR3/1 10YR4/1 10-15% Course Hydric Soils Yes Present? Field Indicator(s)? F3 — Depleted Matrix Notes: WETLAND DETERMINATION Hydruphytic Vegetation Criteria Met? No Wetland Hydrology Present? No Is the Sample Point a Welland? No Hydric Soils Present? Yes Welland Type? Notes: I Attachment E Site Photos I I i K r E- UN n'? y i., ,� y�, {i `- i j'> �� SI �} � qt� I ';: �h.�� y 1j [1 1 11 Attachment F Attachment G SSURGO Soils C & $ S SY C a d EEEEEE U d m 3 00 0ADIA11oo®0 0211©U mLL o; o I 11 Adjoining Property Owners 1 1 Property Owners Main Property Peterson -Jacques Farm Land Co. c/o Severin Peterson Jr. 15900 Flying Cloud Drive Taxpayer Address Eden Prairie, MN 55347 1600 Pioneer Trail Property Address Chanhassen, MN 55347 Adjoining Property Gayle and Lois Degler 1630 Lyman Blvd Chanhassen, MN 55317 Adjoining Property Dean and Lois Degler 9111 Audubon Road Chanhassen, MN 55317 Attachment C Suggested Wetland Seeding Plan 11 1 11 1 1 I 1 1 1 1 1 Basin 8 Seedine Plan Suggested Basin 8 Mitigation Area Seeding Plan The wetland and upland buffer area created for this restoration project will require periodic management to become established and dominated by native noninvasive species as required by the Wetland Conservation Act. Management will include eliminating non-native and invasive vegetation along with creating conditions for the native vegetation that has been planted to survive and flourish. A contractor specializing in vegetative wetland restoration will be hired to grade, seed and mulch the wetland. If needed an herbicide will be applied to the soils and remaining vegetation to prepared for seeding of wetland vegetation. The wetland mitigation area will be lightly tilled 4-6 inches below the new grading elevation to assist in disturbing the seed bank and plant roots. The wetland should be seeded with BWSR seed mix W2 (2) and W5 (5) (see suggested seed mixes below) or other equivalent seed mix as suggested and approved by BWSR through the review process. Grading and Site Preparation The wetland restoration area will be graded to expand the natural contours and shape of the original wetland (Basin 5). Currently precipitation flows into the basin from east and hydrology is also received from seasonal flooding of Bluff Creek. The bottom of the basin will be excavated to match the current elevation of 870 (See Figures 5 and 6 for grading details.) Wetland boundaries are determined in conjunction with the City of Chanhassen's plan for a trail or other corridor adjacent to the east side of the wetland. Wetland hydrology will be provided by seasonal flooding of Bluff Creek, by runoff from the adjacent lots and groundwater. The goal of this system is to emulate periodic and seasonally wet conditions common to floodplain wetlands. Given the design assumption regarding hydrology the area is expected to establish Type 1 floodplain wetland characteristics. Above the wetland boundary elevation of 871 buffers will be established as shown in Figure 5. The upland buffer will consist of non -wetland species and will be planted with a native wetland fringe mix as specified on the plan sheets (Figure 5). 1 1 I 1 C LJ 1 MIXTURE W2 (NATIVE SEDGEIWET MEADOW) ALL COMPONETS ARE PLS AND MCIA YELLOW TAG IF AVAILABLE RATE: 8 PLS lbs/acre COMMON NAME SCIENTIFIC NAME # LBS %AGE ---------------------------------------------- GRASSES SLOUGH GRASS AMERICAN BECKMANN/A SYZIGACHNE 2.00 25.00% BROME FRINGED BROMUS CILIATUS 0.40 5.00% BLUEJOINT CALAMA GROS TIS CANADENSIS 0.08 1.00% WILD RYE VIRGINIA ELYMUS VIRGINICUS 2.00 25.00% GRASS REED MANNA GLYCERIA GRANDIS 0.08 1.00% GRASS FOWL MANNA GLYCERIA STRIATA 0.08 1.00% BLUEGRASS FOWL POA PALUSTRIS 2.00 25.00% GRAMINOIDS SEDGE BOTTLE -BRUSH CARE)(COMOSA 0.08 1.00% SEDGETUSSOCK CAREXSTRICTA 0.04 0.50% SEDGE FOX CAREX VULPINOIDEA 0.16 2.00% RUSH SLENDER JUNCUSTENUIS 0.02 0.30% BULRUSH GREEN SCIRPUSATROV/RENS 0.08 1.00% WOOLGRASS SCIRPUS CYPER/NUS 0.01 0.10% BULLRUSH RIVER SCIRPUSFLUVIATILIS 0.03 0.40% BULRUSH SOFTSTEM SCIRPUS VALIDUS 0.13 1.60% FORBS CANADAANEMONE ANEMONE CANADESIS 0.05 0.60% MILKWEED MARSH ASCLEPIAS INCARNATA 0.08 1.00% ASTER SWAMP ASTER PUNICEUS 0.02 0.20% ASTER FLAT-TOPPED ASTER UMBELLATUS 0.03 0.40% WEED JOE-PYE EUPATORIUMMACULATUM 0.02 0.20% BONESET EUPATORIUMPERFOLIATUM 0.02 0.20% GOLDENROD GRASS -LEAVED EUTHAMIAGRAMINIFOLIA 0.01 0.10% SNEEZEWEED HELENIUMAUTUMNALE 0.02 0.20% SUNFLOWER SAWTOOTH HELIANTHUS GROSSESERRA TUS 0.03 0.40% BLUE FLAG IRIS IRIS VERSICOLOR 0.37 4.60% BLAZING STAR MEADOW LIATRIS LIGULISTYLIS 0.05 0.60% GREAT BLUE LOBELIA LOBELIA SIPHILITICA 0.02 0.20% MONKEY FLOWER M/MULUS RINGENS 0.01 0.10% MINT MOUNTAIN PYCNATHEMUM VIRGINIANUM 0.02 0.20% GOLDENROD GIANT SOLIDAGO GIGANTEA 0.02 0.20% VERVAIN BLUE VERBENA HAS TATA 0.03 0.40% IRONWEED VERNON/AFASCICULATA 0.03 0.40% CULVERS ROOT VERONICASTRUMVIRGINICUM 0.01 0.10% TOTALS 8.00 100.00% 1 [] 11 MIXTURE W5 (BWSR NATIVE WETLAND FRINGE) ALL COMPONETS ARE PLS AND MCIA YELLOW TAG IF AVAILABLE NOTE: Either Alisma triviale (water plantain) or Alisma subcordatum (mud plantain) is acceptable. RATE: 8 PLS lbs/acre COMMON NAME SCIENTIFIC NAME # LBS %AGE -------------------------- GRASSES - SLOUGH GRASS AMERICAN BECKMANNIA SYZIGACHNE 0.80 10.00% BROME FRINGED BROMUS CILIA TUS 1.04 13.00% BLUEJOINT CALAMAGROSTIS CANADENSIS 0.08 1.00% WILD RYE VIRGINIA ELYMUS VIRGINICUS 1.92 24.00% GRASS REED MANNA GLYCERIA GRANDIS 0.16 2.00% RYE GRASS ANNUAL LOLIUM ITALICUM 1.20 15.00% BLUEGRASS FOWL POA PALUSTRIS 1.44 18.00% PRAIRIE CORDGRASS SPARTINA PECTINATA 0.40 5.00% GRAMINOIDS SEDGE POINTED BROOM CAREX SCOPARIA 0.04 0.50% SEDGE FOX CAREX VULPINOIDEA 0.40 5.00% BULRUSH GREEN SCIRPUS ATROVIRENS 0.08 1.00% WOOLGRASS SCIRPUS CYPERINUS 0.04 0.50% BULRUSH SOFTSTEM SCIRPUS VALIDUS 0.16 2.00% FORBS PLANTIAN, LARGE FLOWERED -WATER ALISMA TRIVIALE 0.08 1.00% MILKWEED MARSH ASCLEPIAS INCARNATA 0.02 0.20% ASTER SWAMP ASTER PUNICEUS 0.01 0.10% ASTER FLAT-TOPPED ASTER UMBELLATUS 0.01 0.10% WEED JOE-PYE EUPATORIUMMACULATUM 0.01 0.10% BONESET EUPATORIUM PERFOLIA TUM 0.01 0.10% SNEEZEWEED HELENIUM AUTUMNALE 0.01 0.10% BLAZING STAR PRAIRIE (TALL) LIATRIS PYCNOSTACHYA 0.03 0.40% GREAT BLUE LOBELIA LOBELIA SIPHILITICA 0.01 0.10% MONKEY FLOWER MIMULUS RINGENS 0.01 0.10% WATER PLANTAIN SAGITTARIA LATIFOLIA 0.04 0.50% VERVAIN BLUE -------------------------------------------------------------------------------------------- VERBENA HASTATA 0.02 0.20% -------------------------------------------------------------------------------------------- TOTALS 8.00 100.00% I [1 1 1 1 1 1 Attachment D Suggested Wetland Maintenance Plan 1 I I 1 I 1 H Basin 8 Mitigation Plan Suggested Wetland Maintenance Plan The wetland created in the mitigation process will require regular management to become established and dominated by native and noninvasive vegetation as required by the Wetland Conservation Act. This maintenance is critical in the first three to five years and should be recognized as integral to the successful wetland creation process. Management will include both eliminating non-native and invasive vegetation along with creating ideal conditions for native plants to flourish. Some invasive plants are strong competitors and without proper management could hamper the establishment of native plantings. Non-native plant removal/management and careful monitoring is vital during the early stages of the restoration. As the site becomes more established and the native species grow the site will be less vulnerable to non-native and invasive species. Suggested Methods for Invasive/Nou-native Species Control Mowing - During the first two years of plant establishment mowing at a height of 6-10 inches where feasible will reduce competition from annual weeds. Mowing allows light to reach the small native seedlings and reduces competition from weeds for water and soil nutrients. Spot application of herbicide — Individual invasive plants can be eradicated through wick application or spraying of herbicide. Rodeo or other Minnesota Department of Natural Resources herbicides approve for use near or in water bodies should be applied by a licensed applicator at the appropriate times to control individual plants. Eradicate large infestations with herbicide — The most effective method of eradicating large colonies of plants is to wick -apply or spray them with herbicide. Use Rodeo when spray may come in contact with water and Roundup in upland situations. Repeated application will probably be necessary. Apply to green, actively growing foliage. Repeated application will probably be necessary. Herbicides can effectively control herbicides non-invasive vegetation when applied in spring or fall. Take great care not to apply herbicide to surrounding native plants. A very small amount of herbicide can kill a plant. Cut woody stems and apply herbicide to wound — All woody plants greater than '/< - inch in diameter that cannot be hand pulled should be cut down to expose the vascular tissue, or cambium. Herbicide painted on the cambium will be transported within the plant, eventually killing it. Cut the woody plant at the height that ensures the native herbaceous plants will not have contact with the stump and herbicide. This procedure should not be conducted while woody plants are dormant. Maintenance Schedule Year One: After planting annual weeds should be mowed or removed as needed. The site will likely require one or two mowings. Spot herbicide or hand removal of aggressive weeds such as thistle should occur when the management crew is at the site to mow. Mid summer — Mow wetland where feasible. Early fall — Mow wetland where feasible. Spot spray invasive species. Buckthorn is easier to treat with herbicide in late summer through fall when the plants are storing energy. Year Two: Conduct an initial site visit in May to evaluate status of restoration and determine management tasks for the year. This will most likely include: Spot mowing and spraying invasive weed species, and re -seeding areas that do not meet the performance standards. Spring and Fall — Spot spray invasive species. Year Three: Conduct an initial site visit in May to evaluate status of restoration and determine management tasks for the year. This will most likely include: Spot mowing and spraying invasive weed species, and re -seeding areas that do not meet the performance standards. ' Spring — Spot spray invasive species and re -seed areas that do not meet the performance ' standards. Summer — Spot spray invasive species. ' Fall — Spot spray invasive species. ' Year Four: Conduct an initial site visit in May to evaluate status of restoration and determine management tasks for the year. This will most likely include: Spot mowing and spraying invasive weed species, and re -seeding areas that do not meet the performance standards. ' Spring — Spot spray invasive species and re -seed areas that do not meet the performance standards. ' Summer — Spot spray invasive species. Fall — Spot spray invasive species. Year Five: Conduct an initial site visit in May to evaluate status of restoration and ' determine management tasks for the year. This will most likely include: Spot mowing and spraying invasive weed species, and re -seeding areas that do not meet the ' performance standards. Spring — Spot spray invasive species and re -seed areas that do not meet the performance ' standards. Summer — Spot spray invasive species. ' Fall — Spot spray invasive species. U I 11 IPerformance Standards 1 The following performance standards are the general standards recommended by BWSR at this time. 1 Year 1 - Year one is considered the first full growing season after the establishment of 1 the wetland vegetation. Seedlings of at least 4 native species shall be widely dispersed through the newly seeded area. No areas of bare soil larger than 9 square feet shall exist. 1 There shall be no more than 20% total coverage of exotic, non-native, or invasive vegetation within the restored area. 1 Year 2 - Year two is considered the second full growing season after wetland 1 establishment. The created wetland shall contain at least 30% of all species contained in the specified seed mixes. There shall be no more than 20% total coverage of exotic, non- native, or invasive vegetation within the restored area. 1 Years 3-5 - Years three through five after wetland establishment and beyond. The restored wetland area shall have a minimum of 70% cover of native vegetation. The 1 created wetland shall contain 40% of all species contained in the specified seed mixes. The created wetland shall have no bare patches of soil. There shall be no more than 30% 1 total coverage of exotic, non-native, or invasive vegetation within in restored area. 1 1 I 1 1 1 1 :00 a- 00 N N_ I co 0 O N r 0 a Q o+ 3 .o vi in Z Q J H W 3 I 0 o+ 3 v Q 0 C 0 0 rn M� W 0 m 0 0 0 1 0 0 0 0 m 00 .N 0 m 0 O O i 0 r- 0) m :..�:'. ................ . .. .' .... ...' ''..... ..... • .' '. . .. -'--- ' • - •. • .• •• ..• •• • • • • • ••.• �J LEGEND 100 -YEAR FLOODPLAIN EXISTING WETLAND LSv f •�1' REGIONAL J� STORMWAT ER POND 100 YEAR FLOODPLAIN � e I ....•: :.. ..... _:m / J tX151INC� / -'a, , •WETLANDS;-;•;-;•; i •r 0 s, -_l• • �: �i••. WETLAND MITIGATION-BWSR MIX NO.2 WETLAND MITIGATION-BWSR MIX NO.5 0 40 80 160 HORIZONTAL SCALE IN FEET CONTACT "GOPHER STATE ONE CALL" FOR LOCATIONS OF BURIED UTILITIES. CALL (651) 454-0002 OR 1-800-252-1166. GENERAL NOTES SEE GRADING PLAN FOR ALL EXISTING AND PROPOSED GRADES AND ADDITIONAL EXCAVATION NOTES FOR AREAS ADJACENT TO WETLAND CONTRACTOR TO NOTIFY ENGINEER IF THERE ARE QUESTIONS REGARDING PLACEMENT OF SEED MIXTURE DUE TO FIELD CONDITIONS. SEE WETLAND RESTORATION NOTES BELOW AND THE WETLAND RESTORATION REPORT FOR INFORMATION REGARDING GRADING/TILLING, APPLICATION OF HERBICIDES, MAINTAINANCE SCHEDULES, PERFORMANCE STANDARDS, AND MONITORING PLAN. WETLAND RESTORATION NOTES 1) MATERIALS A NATIVE WETLAND SEED MIXES: 1. NATIVE SEDGE/WET MEADOW MIX: BWSR MIX NO. 2 SEED, FRESH, CLEAN, DRY. MINIMUM SUGGESTED RATE: 8 LBS/ACRE. 2. NATIVE WETLAND FRINGE MIX: BWSR MIX NO. 5 SEED, FRESH, CLEAN, DRY. MINIMUM SUGGESTED RATE: 8 LBS/ACRE. B) SELECTIVE HERBICIDES: EPA REGISTERED AND APPROVED, OF TYPE RECOMMENDED BY MANUFACTURER FOR APPLICATION. C) FERTILIZER: TYPE 2 CONFORMING TO MNDOT 3881, PHOSPHOROUS FREE FERTILIZER. D) MULCHES: 1. MULCH: TYPE 3 CONFORMING TO MNDOT 3882. 2. ASPHALT EMULSION: ASTM D 977, GRADE SS -1; NONTOXIC AND FREE OF PLANT -GROWTH OR GERMINATION INHIBITORS. 2 CONSTRUCTION REQUIREMENTS A CONSTRUCTION SHALL CONFORM TO MNDOT 2575. 5 5. EXAMIN E AREAS TO RECEIVE WETLAND VEGETATION FOR COMPLIANCE WITH REQUIREMENTS AND OTHER CONDITIONS AFFECTING PERFORMANCE. PROCEED WITH INSTALLATION ONLY AFTER UNSATISFACTORY CONDITIONS HAVE BEEN CORRECTED. PROTECT STRUCTURES, UTILITIES, SIDEWALKS, TRAILS, PAVEMENTS, SILT FENCE AND OTHER FACILITIES, KEES, SHRUBS, AND PLANTINGS FROM DAMAGE CAUSED BY PLANTING OPERATIONS. PROTECT GRADE STAKES SET BY OTHERS UNTIL DIRECTED TO REMOVE THEM. 1. IF NECESSARY, APPLY HERBICIDE AND/OR LIGHTLY TILL TEMPORARY COVER CROP AND MULCH. 2. IF NECESSARY, APPLY FERTILIZER. 3. SOW SEED BY BROADCASTING. DO NOT BROADCAST SEED OR DROP SEED WHEN WIND VELOCITY EXCEEDS 5 MPH. EVENLY DISTRIBUTE SEED BY SOWING EQUAL QUANTITIES UANTITIES IN TWO DIRECTIONS AT RIGHT ANGLES TO EACH OTHER. DO NOT USE WET SEED OR SEED THAT IS MOLDY OR OTHERWISE DAMAGED. 4. SOW SEED AT THE MINIMUM SUGESTED RATE. 5. LIGHTLY RACK SEED INTO TOP 1/16 16 IN CH OF SOIL AND ROLL LIGHTLY. TLY. 6. MULCH WITH STRAW, LARGELY FREE OF WEEDS AND WEED SEED. 7. APPLY ASPHALT EMULSION TACKIFIER TO MULCH. 8) MAINTAIN AND ESTABLISH WETLAND BY WEEDING, REPLANTING, AND OTHER OPERATIONS. IN THE EVENT OF SEEDING FAILURE REGRADE, LIGHTLY TILL AND REPLANT BARE OR ERODED AREAS AND REMULCH. C TO PREVENT EROSION AND TO PROTECT THE WETLAND SEEDING ERECT SILTFE NCE THAT WAS TAKEN DOWN FOR ACCESS TO THE WETLAND. 3) CONTINUING MAINTENANCE: A) THE CONTRACTOR AND OWNER SHALL ENTER INTO A STANDARD YEARLY (OR OTHER PERIOD AS NOTED IN THE WETLAND REPORT) MAINTENANCE AGREEMENT STARTING ON THE DATE INITIAL MAINTENANCE SERVICE IS CONCLUDED. THE MAINTENANCE AGREEMENT SHALL STATE SERVICES, OBLIGATIONS, CONDITIONS, AND TERMS FOR AGREEMENT PERIOD AND FOR FUTURE RENEWAL OPTIONS. No. Date Revisions App. I DRAWING NAME I HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION CITY OF CHANHASSENSHEET 1 OF 2 BLUFF -WETLANDS OR REPORT WAS PREPARED BY ME OR UNDER MY CITY PROJECT 06-05 DIRECT SUPERVISION AND THAT I AM A DULY BLUFF CREEK LOWLANDS SHEET N0. DESIGNED BY: SBS LICENSED PROFESSIONAL ENGINEER UNDER THE PUBLICINFRASTRUCTURE IMPROVEMENTS LAWS OF THE STATE OF MINNESOTA. BIDPACKAGE2 S.A.P. 194-125-001 00 DRAWN BY: DJL HOUSTON CHECKED BY: NAME �imley-Horn ENGINEERING, INC. M OF BLUFF CREEK BOULEVARD S.A.P. °A'�� and Associates Inc. - X PROJECT NO. PROJ. NUM DATE:MN LIC. N0. X 1+[ OEM BASIN 8 MITIGATION COUNTY PROJECT 150 GRADING AND SEEDING CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 06-17 NOTICE IS HEREBY GIVEN that the Chanhassen Planning Commission will hold a public hearing on Tuesday, May 16, 2006, at 7:00 p.m. in the Council Chambers in Chanhassen City Hall, 7700 Market Blvd. The purpose of this hearing is to consider a request for a Wetland Alteration Permit for the construction of a roundabout in conjunction with the construction of Bluff Creek Boulevard. Applicant: City of Chanhassen. A plan showing the location of the proposal is available for public review on the City's web site at www.ci.chanhassen.mn.us/sere/plan/06-17.htm1 or at City Hall during regular business hours. All interested persons are invited to attend this public hearing and express their opinions with respect to this proposal. Lori Haak, Water Resources Coordinator Email: lhaak@ci.chanhassen.mn.us Phone: 952-227-1135 (Publish in the Chanhassen Villager on May 4, 2006) SCANNED GMAC MODEL HOME FINANCE, INC PETERSON-JACQUES 6802 PARAGON PLACE #350 FARM LAND CO RICHMOND VA 23230-1650 15900 FLYING CLOUD DR EDEN PRAIRIE, MN 55347-4047 Date: April 17, 2006 City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317 (952)227-1100 To: Development Plan Referral Agencies From: Planning Department By: Lori Haak, Water Resources Coordinator Subject: Request for a Wetland Alteration Permit for the construction of a roundabout in conjunction with the construction of Bluff Creek Boulevard. Applicant: City of Chanhassen Planning Case: 06-17 The above described application for approval of a land development proposal was filed with the Chanhassen Planning Department on April 14, 2006. The 60 -day review period ends June 13, 2006. In order for us to provide a complete analysis of issues for Planning Commission and City Council review, we would appreciate your comments and recommendations concerning the impact of this proposal on traffic circulation, existing and proposed future utility services, storm water drainage, and the need for acquiring public lands or easements for park sites, street extensions or improvements, and utilities. Where specific needs or problems exist, we would like to have a written report to this effect from the agency concerned so that we can make a recommendation to the Planning Commission and City Council. This application is scheduled for consideration by the Chanhassen Planning Commission on May 16, 2006 at 7:00 p.m. in the Council Chambers at Chanhassen City Hall. We would appreciate receiving your comments by no later than May 5, 2006. You may also appear at the Planning Commission meeting if you so desire. Your cooperation and assistance is greatly appreciated. City Departments: a. City Engineer b. City Attorney c. City Park Director d. Fire Marshal e. Building Official £ Water Resources Coordinator g. Forester 2. Carver Soil & Water Conservation District 3. MN Dept. of Transportation 4. MN Dept. of Natural Resources 5. U.S. Army Corps of Engineers 6. U.S. Fish & Wildlife 7. Carver County a. Engineer b. Environmental Services 8. Watershed District Engineer a. Riley -Purgatory -Bluff Creek b. lower Minnesota River c. Minnehaha Creek 9. Telephone Company (Qwest or Sprint/United) 10. Electric Company (Xcel Energy or MN Valley) 11. Mediacom 12. CenterPoint Energy Minnegasco acARKM Name and Address of Local Government Unit: City of Chanhassen P.O. Box 147 Chanhassen, MN 55317 Name of Applicant: City of Chanhassen Application Number: 0606=17 Type of Application (check one): ❑ Exemption Decision ❑ No Loss Decision ❑ Wetland Boundary and Type Determination ® Replacement Plan Decision ❑ Banking Plan Decision Date of Application: April 14, 2006 Location of Project: NE 27 116N 23W 'A 'A 'A Sec. Twp. Range Summary of Project: The City of Chanhassen proposes to impact 0.56 acres of Type 1 wetland (Basin 8) for the purpose of constructing public infrastructure, specifically a roundabout for a collector road, for the City of Chanhassen's 2005 MUSA expansion area (City Project No. 06-05). Proposed onsite wetland mitigation includes the construction of 1.12 acres of new wetland credit adjacent to existing wetland. You are hereby notified that the above -referenced application was made to the Local Government Unit on the date stated above. A copy of the application is attached. Comments will be accepted on this application until May 5, 2006. A decision on this matter will be made at the City of Chanhassen Planning Commission meeting at 7:00 p.m. on May 16, 2006 at Chanhassen City Hall. Contact Lori Haak, Water Resources Coordinator. at 952.227.1135 for details or changes to decision-making schedule. Water Resources Coordinator Title List of Addressees: Landowner Paul Oehme, City Engineer/Public Works Director Members of Technical Evaluation Panel Greg Graczyk, Carver SWCD Brad Wozney, Minnesota BWSR April 24, 2006 Date Watershed District or Watershed Management Organization (If Applicable) Mark Wilson, Riley -Purgatory -Bluff Creek Watershed District Page 1 of 2 Basin 8 Notice App 9/16/04 0 Department of Natural Resources Regional Office (select a ronate office) NW Region: NE Region: Central Region: Southern Region: Regional Director Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. 2115 Birchmont Beach Rd. NE Div. Ecol. Services Div. Ecol. Services Div. Ecol. Services Bemidji, MN 56601 1201 E. Hwy. 2 1200 Warner Road 261 Hwy. 15 South New Ulm, MN 56073 Grand Rapids, MN 55744 St. Paul, MN 55106 DNR TEP Representative (if different than above) Julie Ekman, DNR Metro Joe Yanta, Corp of Engineers Project Manager Department of the Army, Corps of Engineers, St. Paul District ATTN: CO -R, 190 Fifth Street East St. Paul, MN 55101-1638 Individual members of the public who requested a copy (summary only) (none) Page 2 of 2 Basin 8 Notice App 9/16/04 C I� Kimley-Horn and Associates, Inc. Transmittal CITY OF CHANHASSEN RECEIVED APR 1 3 2006 CHANHASSEN PLANNING DEPT Date: April 13, 2006 Job Number: 160511001/2.1 Project Name: Bluff Creek Boulevard Improvements, C.P. 06-05 To: Lori Haak City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317 We are sending these by U.S. Mail Other: We are sending you ® Attached ❑ Shop Drawings ❑ Other. Copies Date 2550 University Avenue West Suite 345N St. Paul, Minnesota 55114 TEL 6516454197 FAX 651 645 5116 FedEx ® Hand Deliver Under separate cover via the following items: ❑ Ptints/Plans E] Samples ❑ Specifications ❑ Change Orders No. Description 1 Wetland Permit Application Mitigation Plan Basin 8 SIGNED Permit Application for submittal to City of Chanhassen 1 Wetland Permit Application Mitigation Plan Basin 8 SIGNED Permit Application for submittal to Board of Water and Soil Resources 14 Wetland Permit Application Mitigation Plan Basin 8 UNSIGNED Permit Application for distribution to various agencies These are transmitted as checked below: ® For your use ❑ Approved as submitted ❑ Resubmit ❑ Copies for approval ❑ As requested E] Approved as noted E] Submit ❑ Copies for distribution ❑ For review and comment ❑ Returned for corrections ❑ Return ❑ Corrected prints Remarks: Copy to: File Signed Chadd B. Larson ❑�❑ Kimley-Horn and Associates, Inc. Transmittal CITY OF CHANHASSEN RECEIVED APR 1 3 2006 CHANHASSEN PLANNING DEPT Date: April 13, 2006 Job Number: 160511001/2.1 Project Name: Bluff Creek Boulevard Improvements, C.P. 06-05 To: Lori Haak City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317 We are sending these by U.S. Mail Other: We are sending you ® Attached ❑ Shop Drawings ❑ Other: Copies Date 2550 University Avenue West Suite 345N St. Paul, Minnesota 55114 TEL 6516454197 FAX 651 645 5116 FedEx ® Hand Deliver Under separate cover via the following items: 0 Prints'Plans ❑ Samples ❑ Specifications E] Change Orders No. Description 1 Wetland Permit Application Mitigation Plan Basin 8 SIGNED Permit Application for submittal to City of Chanhassen I Wetland Permit Application Mitigation Plan Basin 8 SIGNED Permit Application for submittal to Board of Water and Soil Resources 14 Wetland Permit Application Mitigation Plan Basin 8 UNSIGNED Permit Application for distribution to various agencies These are transmitted as checked below: ® For your use E] Approved as submitted ❑ Resubmit ❑ Copies for approval As requested ❑ Approved as noted ❑ Submit ❑ Copies for distribution ❑ For review and comment ❑ Returned for corrections ❑ Return ❑ Corrected prints Remarks: Copy to: File Signed Chadd B. Larson