Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
CAS-23_LAKE MINNEWASHTA REGIONAL PARK
2014-23 Minnewashta Regional Park Wetland Alteration Permit Krista Done Task Due Date Notes X Submittal Received (Friday) 07/18/14 Late Submittal -notified 7/23 by Krista X Review for Completion (Monday) X Process Fee N/A Fee waived (Carver County) X Create Electronic File in g:\plan 07/24/14 X Create Laserfiche files (2) 07/25/14 X ICreate file pocket 07/25/14 X Scan documents to Laserfiche 07/25/14 X Create Web Page/redirect 07/24/14 X Install Proposed Development Sign 07/25/14 Requested 7/24 & removed 7/30 X Create Referral notice 07/24/14 X Distribute Referral notices to staff 07/25/14 Water Resources Coordinator ONLY X Email referral notices to outside agencies N/A X Create Public Hearing Notice 07/28/14 X Email Public Hearing Notice to Villager 07/28/14 X Create PH Notice mailing list (pre -application) X Create Public Hearing Notice Postcards (Thursday) 07/31/14 X Mail Public Hearing Notice Postcards 08/07/14 X Prepare affidavit of mailing/PH notice list 07/31/14 X Email PC Agenda to Villager 08/07/14 X Staff/Agency review deadline 08/06/14 X PC Staff Report X PC Staff Report Review -CDD X PC Staff Report Review -CM X PC Packet 08/14/14 X Email PC Staff Reports to Developer/Applicant 08/14/14 X PowerPoint X PC Meeting 08/19/14 X Update web page with PC action 08/20/14 Approved Process approved variances (if not appealed) N/A X CC Update Report X CC Staff Report Review -CDD X CC Staff Report Review -CM X Draft documents (resolutions, SPA, CUP, UP, VAR, etc.) WAP X CC Packet X Email CC Staff Reports to Developer/Applicant X CC Meeting 09/08/14 X Update web page with CC action 09/09/14 X Create and Mail Decision Letter 09/09/14 X Process documents (resolutions, SPA, CUP, UP, VAR, etc.) 09/09/14 WAP X Execute documents X Process record executed documents 09/15/14 lNot recorded X lRemove Notification Sign 07/30/14 lCounty requested early removal 60 -day Review Deadline 09/16/14 SCANNED CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA LAKE MINNEWASHTA REGIONAL PARK WETLAND ALTERATION PERMIT #2014-23 1. Permit. Subject to the terms and conditions set forth herein, the City of Chanhassen hereby grants a wetland alteration permit for the following use: For the purpose of the Lake Minnewashta Regional Park Improvements Project. 2. . The permit is for property situated in the City of Chanhassen, Carver County, Minnesota, and legally described as shown on the attached Exhibit A. 3. Conditions. The Wetland Alteration Permit was approved subject to the following conditions: a. Wetland replacement shall occur in a manner consistent with the Minnesota Wetland Conservation Act (MR 8420). The applicant shall receive the City's approval of a wetland replacement plan prior to any wetland impact occurring. b. Wetland buffer areas shall be preserved, maintained, and/or created around all existing wetlands in compliance with Sections 20-401 — 20-421 of Chanhassen City Code. c. The applicant shall apply for and obtain permits from the appropriate regulatory agencies, e.g. Minnesota Pollution Control Agency, Minnesota Department of Natural Resources, Minnesota Department of Transportation, Minnesota Board of Soil and Water Resources and Army Corps of Engineers and comply with their conditions of approval. d. The applicant must submit a Bill of Sale for Wetland Banking Credits to the Minnesota Board of Water and Soil Resources signed by both the buyer and seller of designated wetland credits. SCANNED e. The applicant must obtain, and the City must have received copy of, an Application for Withdrawal of Wetland Credits from the Minnesota Wetland Bank signed and approved by the Minnesota Board of Water and Soil Resources prior to any wetland impacts. £ A signed Landowner Statement and Contractor Responsibility form shall be provided to City prior to commencement of activity. 4. Termination of Permit. The City may revoke the permit following a public hearing for violation of the terms of this permit. 5. Lapse. If within one year of the issuance of this permit the authorized construction has not been substantially completed or the use commenced, this permit shall lapse, unless an extension is granted in accordance with the Chanhassen Zoning Ordinance. 6. Criminal Penalty. Violation of the terms of this conditional use permit is a criminal misdemeanor. Dated: September 8, 2014 SEAL STATE OF MINNESOTA ) ( ss COUNTY OF CARVER ) CITY OF CHANHASSEN By: '�_ tL Ai; Tho A. Furlong May By: Jjk dd Gerhardt, City Manager The foregoing instrument was acknowledged before me this3� hday of 2014, by Thomas A. Furlong, Mayor and Todd Gerhardt, City Manager, of the City ot Chanhassen, a Minnesota municipal corporation, on behalf of the corporation and pursuant to authority granted by its City Council. zti Not Pu liar KIM T. MEUWISSEN I$ Notary Public -Minnesota MY Comm4Mon Expku Jen 31, 2015 DRAFTED BY: City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317 See attached WSB and Associates, Inc. Figure I Project Location Map. __ I Lve,uv �t , i , I• I .�r r� l 4 3M6.OW 3I q I—J i . ,i t "4 _ •y tS ' •..N vyle.n. i r.w..0 f i jrtes Esn, DeLprme„ I.AVrEQ. USGS. Intermap, iPC. NRCAN, Earl Japan, --'tv1ETL Esri China (Yong Kong), Esri (Thailand). TomTom, 2013 Figure 1. Project Locations A Lake Minnewashta Regional Park ProjectLimits City Limits WSS Chanhassen, Minnesota Mf Lake Minnewashta f inch= 2,000 feet �J 14-13-3 Chanhassen City Council — September 8, 2014 6. MG, LLC, 1380 Park Road: Request for a Conditional Use Permit to Allow Screened Outdoor Storage on Property Zoned Industrial Office Park (IOP), Northeast Comer of Park Road and Park Place, Applicant/Owner: MG, LLC. 7. Resolution #2014-58: Resolution Approving Temporary Lifting of No Parking Restrictions on Kerber Boulevard and Santa Vera Drive, Centennial Hills Apartment Project. 8. Carver County, Lake Minnewashta Regional Park Improvement Project: Approve Wetland Alteration Permit #2014-23. 9. Resolution #2014-59: Approve Resolution as amended for the Request for CenturyLink Utility Service for Pioneer Pass and The Preserve at Bluff Creek Addition. All voted in favor and the motion carried unanimously with a vote of 5 to 0. VISTI'OR PRESENTATIONS. Sam Chase: Thank you. The name's Sam Chase, 6621 Arlington Court and I'd like to talk about the road conditions just real briefly. I've lived here most of my life and last year the roads were just abysmal for a period of time. I saw people sliding through intersections. I had a personal experience where on Mulberry I spun 360. Almost wound up in the lake. I had 2 cars that I pulled out of ditches or pushed out of ditches and I ran into a number of telephone, not me but I saw a number of telephone poles that people had run into. I talked to the gentleman in charge of the roads and he said it's because they're not using sand anymore. And the State had stopped using sand. So I called MnDOT. MnDOT said there are three reasons they've quit using sand. The fust was because at 70 miles an hour it didn't work. We don't go 70 miles an hour here. The second was they had a lot of high winds blowing on the roads and we don't have that. And the third was that he said we clear the roads and the highways within 3 hours right to the pavement and that's not a reasonable expectation. The city of Chanhassen there will be times when it's days before the roads are cleared so this year I talked to Charlie Burke and asked him if they were going to start using sand at all because last year was so horrendously bad and he said no. It was his decision with one other person and they weren't going to use it. He said they had sand but I couldn't really get an answer from him as to whether they'd ever use it and it kind of boils down to either it pollutes. It's bad for the environment. Or it's costly and I looked everywhere I could on the internet. I cannot find anything that says sand is worst than salt and chemicals. Sand doesn't mix with anything. Sand doesn't corrode anything. Sand doesn't pollute anything. It just sits and the gentleman last year said they're using extra chemicals to try and compensate for this. I've talked to multiple teachers and parents where I volunteer in the school. We're all eagerly hoping that this will change. I'm not asking that you dump sand everywhere but I would hope that there would be times when you look at the roads and say this is just beyond belief. We can't work with salt. It's not evaporating or dissolving the ice. We need to use some sand. It's just entirely too dangerous. Last year I stopped shopping in Chanhassen because I just couldn't move around on these roads safely without being worried that I was going to hit someone or someone else was going to hit me. I know it costs money but it's a matter of public safety and the families and the people who work in Chanhassen really need to be able to move around without having to worry that they're going to slide into a ditch or another car or a light pole or who knows what. That's it. Mayor Furlong: Okay, thank you. Sam Chase: Thank you. Mayor Furlong: Thank you Mr. Chase. Appreciate it. Mr. Gerhardt, Mr. Oehme, any thoughts or comments on the mixtures that we use for, and our process that we use here in the city streets? And SCANNED CEANHASSEN CITY COUNCIL REGULAR MEETING SEPTEMBER 8, 2014 Mayor Furlong called the meeting to order at 7:05 p.m. The meeting was opened with the Pledge to the Flag. COUNCIL MEMBERS PRESENT: Mayor Furlong, Councilman Laufenburger, Councilwoman Ernst, Councilwoman Tjornhom, and Councilman McDonald STAFF PRESENT: Todd Gerhardt, Laurie Hokkanen, Paul Oehme, Kate Aanenson, Todd Hoffman, Greg Sticha, and Roger Knutson PUBLIC PRESENT: Gary Disch 1401 Park Road Sam Chase 6621 Arlington Steve Johnson 1508 Welland Avenue, Minnetonka Vemelle Clayton 422 Santa Fe Circle Mayor Furlong: Thank you and welcome everybody. Those here in the council chambers as well as those watching at home. We're glad that you joined us this evening. At this time I'd like to go through a few changes and modifications to the agenda that was published. First of all at the request of the applicant, item number 5. E(5) on the consent agenda which is, was to consider the Bluff Creek, Preserve at Bluff Creek 61 Addition will be removed so if you're here for that item, number E(5), we will not be discussing that this evening. Also the resolution relating to item number E(9) has been modified with a change in the, Be It Resolved that the City Council hereby requests installation as opposed to approving the installation. That resolution is in front of the council members. You should have that. We'll continue to have that on the consent agenda unless someone would like separate discussion on it. And then also we will add an item 3 under New Business which relates, or we'll consider approval of renewing an agreement with the BCA for data access for our prosecution. So at this point unless there are objections, we'll proceed with the agenda as published with the addition of those modifications. With that let's go ahead and start then this evening with our consent agenda items. CONSENT AGENDA: Councilwoman Ernst moved, Councilman Laufenburger seconded that the City Council approve the following consent agenda items pursuant to the City Manager's recommendations: Approval of City Council Minutes dated August 25, 2014. 2. Receive Planning Commission Minutes dated August 19, 2014. 3. Bandimere Park Expansion Project PK&T-114: Approve Demolition Contract and Site Grading Contract. 4. Approve Payment to Eastern Carver County Schools for 24% of Boiler Replacement Costs; Bluff Creek Elementary School/Chanhassen Recreation Center. 5. Deleted. CITU OF CHANHASSEN 7700 Market Boulevard PO Box 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 & 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 7901 Park Place 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: Krista Spreiter, Natural Resources Technician DATE: September 8, 2014 SUBJ: Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit and Wetland Replacement Plan Planning Case 2014-23 PROPOSED MOTION "The Chanhassen Planning Commission recommends that City Council approve Wetland Alteration Permit #2014-23 and WCA Permit Number 2014-03 to impact .05 acres of wetland and the wetland replacement plan under MN Rules Chapter 8420 which utilizes the purchase of. I acres of wetland credit from bank #1375 for the purpose of the proposed Lake Minnewashta Regional Park Improvements Project; and authorize the Water Resources Coordinator to sign the joint water resource application for approval of wetland replacement as shown in plans dated July 22, 2014, subject to conditions within this staff report. And, Adoption of the attached Findings of Fact and Recommendation." City Council approval requires a simple majority vote. EXECUTIVE SUMMARY The Carver County Parks Department is requesting a wetland alteration permit for wetland impacts as a result of the proposed Lake Minnewashta Regional Park Improvements Project. This is a revision to the original application, dated July 24, 2014. The revision includes the addition of 806 square feet of impact to one additional wetland (Lake Minnewashta).The proposed project consists of reshaping and resurface of the current gravel surface access roads within the park to bituminous surface, tail realignment, and construction of a bypass lane and turnaround at the park entrance (see Figure 1 below). Construction for the proposed project is expected to begin in September, 2014, with substantial completion by October 31, 2015. The proposed project will result in impacts to three wetland basins, which will result in a total of .07 acres of permanent wetland impact. These impacts will be mitigated for by wetland credits from the Board of Soil and Water Resources Road Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow SCANNED Todd Gerhardt Lake Minnewashta Regional Park Improvements Project WAP — Planning Case 2014-23 September 8, 2014 Page 2 Replacement Program and the purchase of wetland banking credits from wetland bank #1375. The original application called for only .05 acres of impact. However, an addendum was submitted by the applicant on August 26, 2014, identifying additional impact to an additional wetland totaling 806 square feet. This addendum has been included in the application. PLANNING COMMISSION SUMMARY The Planning Commission held a Public Hearing on August 19, 2014 to review the wetland alteration permit for the proposed road improvement project. The commission voted seven to zero on a motion recommending approval of the wetland alteration permit and wetland replacement plan. No individuals spoke at the public hearing. RECOMMENDATION Staff recommends adoption of the following motion approving the Wetland Alteration Permit and Wetland Replacement Plan: "The Chanhassen Planning Commission recommends that City Council approve Wetland Alteration Permit #2014-23 and WCA Permit Number 2014-03 to impact .05 acres of wetland and the wetland replacement plan under MN Rules Chapter 8420 which utilizes the purchase of .1 acres of wetland credit from bank #1375 for the purpose of the proposed Lake Minnewashta Regional Park Improvements Project; and authorize the Water Resources Coordinator to sign the joint water resource application for approval of wetland replacement as shown in plans dated July 22, 2014, subject to conditions within this staff report. And, Adoption of the attached Findings of Fact and Recommendation." ATTACHMENTS 1. Planning Commission Staff Report Dated August 19, 2014. 2. Memo from WSB dated August 26, 2014. g:\plan\2014 planning casm\2014-23 minnewashta regional park wetland alteration pemtiftc_revised applicatioMexecutive summary_ I O_13_2014.docx CITY OF CHANHASSEN PC DATE: August 19, 2014 — o� CC DATE: September 8, 2014 REVIEW DEADLINE: September 16, 2014 CASE #: 2014-23 BY: KS PROPOSED MOTION: The Chanhassen Planning Commission recommends that City Council approve Wetland Alteration Permit #2014-23 and WCA Permit Number 2014-03 to impact .05 acres of wetland and the wetland replacement plan under MN Rules Chapter 8420 which utilizes the purchase of .1 acres of wetland credit from bank #1375 for the purpose of the proposed Lake Minnewashta Regional Park Improvements Project; and authorize the Water Resources Coordinator to sign the joint water resource application for approval of wetland replacement as shown in plans dated July 22, 2014, subject to conditions within this staff report. And, / p� Adoption of the attached Findings of Fact and Recommendation. SUMMARY OF REQUEST: Request for a Wetland Alteration Permit for the proposed Lake Minnewashta Regional Park Improvements Project. LOCATION: Within the Lake Minnewashta Regional Park, 6900 Hazeltine Boulevard, Section 4, T116 N, R23W, within the city of Chanhassen. APPLICANT: Carver County Parks Department Attn: Martin Walsh 11360 Highway 212 West Cologne, MN 55322 mwalsh(a,co.carver.mn.us 952-466-5252 PRESENT ZONING: 2030 LAND USE PLAN: Rural Residential District (RR). Parks and Open Space. ACREAGE: N/A DENSITY: N/A SUMMARY OF PROPOSAL Request for a Wetland Alteration Permit under Chanhassen City Code, Chapter 20, Article VI, Wetland Protection, and approval of a wetland replacement plan under the MN Wetland Conservation Act for the Lake Minnewashta Regional Park Improvements Project. SCANNED Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 2 of 17 LEVEL OF CITY DISCRETION IN DECISION-MAKING The City has limited discretion in approving or denying a wetland alteration permit, based on whether or not the proposal meets the wetland alteration permit standards outlined in the Zoning Ordinance. If the City finds that all the applicable wetland alteration permit standards are met, the permit must be approved. This is a quasi-judicial decision. APPLICABLE REGUATIONS • Chapter 20, Article IV, Conditional Uses: Wetland Alteration Permits follow the Conditional Use Permit criteria • Chapter 20, Article VI, Wetland Protection • MN Rules Chapter 8420.0500 through 8420.0526 PROPOSAL SUMMARY The Carver County Parks Department is requesting a wetland alteration permit for wetland impacts as a result of the proposed Lake Minnewashta Regional Park Improvements Project. The proposed project consists of reshaping and paving 5,657 lineal feet of a current road section, resurface of the access road to the dog park (1,587 lineal feet) boat launch improvements, 500 lineal feet of trail improvements and realignment, and construction of an entrance turnaround. (See Figure 1, below). Construction for the proposed project is expected to begin September 1, 2014, with substantial completion by October 31, 2015. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 3 of 17 Figure 1. Project Location Lake Minnewashta Regional Park Improvements Project Carver County, Mime to r e � n "�• Z } i 4•a t....o - r�r o� r i i-------- ------- -- �.�yu� Em, Datpna�NAVTE�. USA-- l ntermap. IPC. NRCw EN Japr �""101ih. EN CnN 19 �p^91. Eon fTNuap TornTom. 2017 Fgure 1. Protect Location A Lake Minnewashta Regional Park OPRltadLMM Carunn WSB � Chanhassen. Minnesota M LM* Mww aum I1rc-2.000*a Figure 1. Project Location Lake Minnewashta Regional Park Improvements Project Carver County, Mime to Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 4 of 17 In order to accommodate the project, the applicant is proposing to impact two existing wetlands (Wetlands G and H), as shown in Figure 2, below. i �es� Type of bWKt: Duration of X GINIV Ftant County, MaJor Apratic Resource Ifill, excavate, Impart . Overall Slee of Commw hY Watershed a, ID las noted on Rource Type drain, or Permanent IP) Slag of Impact°' AWatk Types) In and Bank overheadAewl (wetland, lake, remove or Temporary Resource' . Impact A -ea Servke Area R tributary etc) vegetation) , Irl of knpatt Area G(W10) Wetland Fill FlII P 979 sf P 1212 if 979 sf 5661 sf Wet realm Wet Meadow Carver, 2%7 Carver, 20.7 H W22 Wetland NETMO itItlM.gl 113V i1 ,. �.. i -i /i Figure 2. Proposed wetland impacts as indicated in plans from application, dated July 22, 2014. Table 1. Wetland Impacts Joint Wafer Resource Permit Application for the Lake Minnewashia Regional Park Project, prepared by WSB & Associates, Inc., February 21, 2014 �es� Type of bWKt: Duration of GINIV Ftant County, MaJor Apratic Resource Ifill, excavate, Impart . Overall Slee of Commw hY Watershed a, ID las noted on Rource Type drain, or Permanent IP) Slag of Impact°' AWatk Types) In and Bank overheadAewl (wetland, lake, remove or Temporary Resource' . Impact A -ea Servke Area R tributary etc) vegetation) , Irl of knpatt Area G(W10) Wetland Fill FlII P 979 sf P 1212 if 979 sf 5661 sf Wet realm Wet Meadow Carver, 2%7 Carver, 20.7 H W22 Wetland Joint Wafer Resource Permit Application for the Lake Minnewashia Regional Park Project, prepared by WSB & Associates, Inc., February 21, 2014 Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 5 of 17 The proposed .05 acres of wetland impacts resulting from the park improvements are to be mitigated for using wetland bank credits purchased by Carver County from account #1375. This wetland bank is located in the same Bank Service Area (BSA 7) and Major Watershed (19 -South Fork, Crow R.) as the proposed project. Therefore, the impacts are required to be mitigated for at a 2:1 ratio, resulting in the purchase of .1 acres of wetland credit from bank #1375. This is consistent with Chapter 8420.0522 of the Wetland Conservation Act (WCA) Rules. BACKGROUND Carver County Parks has received grant funding from the State of Minnesota, through the Legacy Amendment, for the proposed improvements to Lake Minnewashta Regional Park with the purpose of improving public amenities within the park and providing safer access for the public. The park experiences over 147,400 visits throughout the year. Many of these users are recreationalists who utilize the park's two boat launches, as they provide the only public access to Lake Minnewashta. Lake Minnewashta Regional Park currently consists of 341 acres of forest, wetland, prairie, shoreline habitat, and developed parkland, and includes two boat accesses, 4 picnic shelters, a beach area, creative playground, 5 miles of trail and a fishing pier. All access roads within the park are currently gravel surfaced, including Scenic Drive, the main roadway through the park. The park's roadways have been experiencing unsafe conditions and erosion due to washouts, frost boils, and irregular road surfaces. Lake Minnewashta Regional Park has also at times experienced backups onto Highway 41 at the entrance of the park, creating unsafe conditions for motorists and users. The goal of the project is to improve safety and accessibility, and reduce erosion. Additional project information can be found in the memorandum, permit application, and its attachments dated July 22, 2014. The need for the project is also identified in the State Park Road Account Program grant application, and the Carver County's Park Master Plan. The proposed Lake Minnewashta Regional Park Improvements Project includes trail improvements, roadway improvements, access road improvements, boat launch improvements and expansion, and construction of an entrance turnaround. The project will disturb a total of 10.37 acres of land, and increase the existing impervious surface within the park by .45 acres. Trail improvements include construction of a new bituminous trail as part of the trail realignment, as well as demarcation of a cross-country skiing trail. The road improvements include resurfacing the current gravel surface roadway to a 22 -foot wide rural bituminous surface with gravel shoulders. This includes the access road to the dog park, and the creation of a 250 -foot bypass lane at the park entrance. The proposed project also includes the reconstruction and expansion of an existing boat launch to accommodate additional boat traffic at this location. The boat launch area currently consists of 10 parking stalls. The proposed boat launch area would be expanded to accommodate 45 vehicles. The existing boat launch is currently in need of repair, and the applicant sought to design the boat launch to meet Minnesota Department of Natural Resources (DNR) requirements. As a result, the boat launch does not require a MN DNR permit. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 6 of 17 Figure 3. Proposed Lake Nlinneaashta Regional Park Improvements Project as indicated in plans from application, dated July 22, 2014. i, Is MI it `=-7 / Figure 3. Proposed Lake Nlinneaashta Regional Park Improvements Project as indicated in plans from application, dated July 22, 2014. Figure 4. Proposed Lake Minneoashta Regional Park Improvements Project as indicated in plans from application, dated July 22, 2014. i, Is Figure 4. Proposed Lake Minneoashta Regional Park Improvements Project as indicated in plans from application, dated July 22, 2014. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August l9, 2014 Page 7 of 17 Figure i r . � /, rt.rte • ___ ----------------------- Figure 5. Proposed Lake Minnewashts Regional Park Improvements Project as indicated in plans from application, dated July 22,2014. Wetlands within the proposed project area were delineated in September of 2013 by WSB & Associates, Inc. The delineations were reviewed on site by city staff in October of 2013, and the boundary was approved by the City of Chanhassen on July 24, 2014. The delineation identified four wetland areas within the proposed project areas. The Joint Permit Application for wetland replacement dated July 22, 2014, was received and noticed on July 24, 2014. The proposed improvements will result in permanent impacts to two wetlands, shown in Figure 6 below, and described as follows: Wetland G: Wetland G is classified as a type 2, fresh (wet) meadow wetland according to Fish and Wildlife Service Circular 39. This wetland is not yet classified under the City's wetland inventory. Wetland G is located immediately south and east of the existing boat launch and entirely within the project area for the proposed boat launch. This wetland would be eliminated as part of the proposed project. The proposed impact to this wetland is approximately 979 square feet. Wetland H: Wetland H is also classified as a type 2, fresh (wet) meadow wetland according to Fish and Wildlife Service Circular 39. This wetland is not yet classified under the City's wetland inventory. Wetland H is located just south of the existing boat launch. The proposed impact to this wetland would result from the trail removal and realignment proposed with the Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 8of17 reconstruction of the boat launch area. The proposed impact to this wetland is approximately 1,212 square feet. Figure 6. Proposed wetland impacts as indicated in plans from application, dated July 22, 2014. WETLAND BUFFERS The applicant has chosen to meet The Minnehaha Creek Watershed District (MCWD) Wetland Protection Rule. This rule is more stringent than the City's Wetland Protection Ordinance; therefore, the proposed plan brought forth by the applicant also meets the requirements of the City's Wetland Protection Ordinance by default. The MCWD requires that any project that activates the MCWD's Wetland Protection or Stormwater Rule, such as this one, provide a buffer `on that part of the wetland edge that is down gradient from the activity of construction and around each wetland that will be disturbed. ' - MCWD Wetland Protection Rule, S. (a). As a result, a buffer will be created for five wetlands associated with the project, according to the District's wetland assessment and buffer width requirements. These wetlands, and their corresponding classifications and buffer requirements set forth by the District, are shown in Table 2, below. X N1 i1 •1 f 1 � w.n enwo�s.wwv nwcuwo /: c Figure 6. Proposed wetland impacts as indicated in plans from application, dated July 22, 2014. WETLAND BUFFERS The applicant has chosen to meet The Minnehaha Creek Watershed District (MCWD) Wetland Protection Rule. This rule is more stringent than the City's Wetland Protection Ordinance; therefore, the proposed plan brought forth by the applicant also meets the requirements of the City's Wetland Protection Ordinance by default. The MCWD requires that any project that activates the MCWD's Wetland Protection or Stormwater Rule, such as this one, provide a buffer `on that part of the wetland edge that is down gradient from the activity of construction and around each wetland that will be disturbed. ' - MCWD Wetland Protection Rule, S. (a). As a result, a buffer will be created for five wetlands associated with the project, according to the District's wetland assessment and buffer width requirements. These wetlands, and their corresponding classifications and buffer requirements set forth by the District, are shown in Table 2, below. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 9of17 Table 2. Wetland Buffers Wetland (SRF Wetland Management Watershed Required Provided delineation Type (at Classification District Buffer Width Buffer Width label in project (based on (max/min) in in feet parentheses) area) MCWD feet assessment) A 3 Manage 2 MCWD 30/16 3-30 D 13 Preserve MCWD 75/67 0 E(W9) 6 Manage MCWD MCWD-40 10-40 /34 F W21 6 Preserve MCWD 75/67 3-75 H (W22) 2 Manage 3 MCWD 20/16 0.20 Joint Water Resource Permit Application for the Lake Minnewashla Regional Park Project, prepared by WSB & Associates, Inc., February 21, 2014 ALTERNATIVES The Wetland Conservation Act requires the applicant to list at least two alternatives to the proposed project that would avoid or minimize impacts to wetlands or waters (one of which may be "no build" or "do nothing"). The applicant then must list and explain why the option described in the application was chosen over these alternatives. The following alternatives were presented in the Joint Water Resource Application submitted by the applicant: Alternative road alignments were considered to avoid wetland impacts to the greatest extent practicable. Initial design of the road at the entrance to the park resulted in impacts to Wetland A. The design was changed to include a retaining wall in this location to completely avoid wetland impacts to this wetland. Road alignments were also designed to avoid impacts to Wetlands B, C, E, and F. Alternatives to impacts associated with the boat launch reconstruction included additional impacts to the wooded area north of the parking lot and completely realigning the road to the south. This was regarded as an impractical option, and would result in a loss of a large amount of woodland habitat, thus impacts to Wetland G were considered unavoidable. Wetland H is proposed to be impacted as a result of the trail relocation, just south and east of its current location. The existing trail currently bisects Wetland H. The proposed project will involve the removal of the existing trail and realigning the trail so that it skirts along the edge of Wetland H. Approximately 383 square feet of wetland area in Wetland H will be restored as a result of the trail removal. Credit is not being sought for this restoration activity; however, the applicant is asking that it be recognized as a minimization effort. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 10 of 17 Impact Minimization and Avoidance The Wetland Conservation Act requires that if avoidance is not an option, the unavoidable impacts are minimized to the greatest extent practicable. Efforts have been made by the applicant to minimize the proposed wetland impacts by restoration of wetland resulting in the realignment of the trail, as previously stated, as well as constructing the trail as close to grade as possible, to minimize impacts resulting from slopes. A retaining wall was also included in the final design, as previously discussed, to avoid impacts to Wetland A, and reduce the overall impacts of the proposed project. STORMWATER MANAGEMENT A series of infiltration basins and a stormwater pond are proposed within the proposed boat launch parking lot to provide water quality treatment for the additional .45 acres of impervious surface that is to be created as a result of the proposed project. The MCWD Stormwater management rule requires that phosphorous control and rate control be provided for the resulting net increase in impervious surface. Because the increase in impervious surface is almost solely due to the construction and expansion of the proposed boat launch, the sormwater treatment features that are to be installed are concentrated in this area (See Figures 7 and 8 below). These features will be designed to meet local and state water quality standards. Figure 7. Grading and drainage plan as indicated in plans from application, dated July 22, 2014. ��Loa1 CONCRETE PAD FOR PORTABLE RESTROOMS 45':15'`- 1 AOAT P)ER.AREA •� 8VEHICLE STALLS ^9e .�`�_ Bandses DOUBLE LAUNCH WITH r LOADING DOCK r' i s RECYCLING COMPOSTITRASH % /--- ' jp BIN AREAWXIT TE DOWW AREA 35 VEHICLE TRAILER STALLS 1 1 u Al Figure 7. Grading and drainage plan as indicated in plans from application, dated July 22, 2014. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 11 of 17 Figure 8. Drainage routing plan as indicated in plans from application, dated July 22, 2014. tos CONCRETE PAD FOR PORTABLE REBTROOMB 4 61 ��r+ ATPREPAREA �' '•%�. '��`, SVFJYCLE STALLS r .AUNCH WITH LADING DOCK'S 'I 5R P RECVCLMlGSH •� COMPOST /TRASH -' ��.\ Bin AREA T eAREA 35VEMXXEITRARM TIE DOWN'AREA STALLS 1 S.,,c :a• l �L' R for Boal J Pe""�W Payed 7n�S FvocAx �o x ar Oc833 o mu ryeocAD mane SIAMM uc Figure 8. Drainage routing plan as indicated in plans from application, dated July 22, 2014. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 12 of 17 WETLAND REPLACEMENT Wetland replacement for this project will be accomplished using wetland bank credits. The replacement plan proposes that .1 acres (.05 ac at a 2:1 ratio) for the proposed Lake Minnewashta Regional Park Improvements Project be purchased by the County, using wetland bank credits from wetland bank account #1375, located in the same Bank Service Area 7, and Major Watershed 19 (South Fork - Crow River). The applicant is responsible for obtaining any permits or approvals from the appropriate regulatory agencies and compliance with their Conditions of Approval. FINDINGS The Planning Commission shall recommend a Wetland Alteration Permit and the Council shall issue such Wetland Alteration Permit only if it finds that: a. The proposed project will not be detrimental to or endanger the public health, safety, comfort, convenience or general welfare of the neighborhood or the city. FINDING: The proposed wetland impacts that will occur with the Lake Minnewashta Regional Park Improvements Project have not been found to pose danger to public health, safety, comfort, convenience or general welfare. The goal of the proposed project is to improve the amenities of the park for residents and recreationalists. b. The proposed project will be consistent with the objectives of the City's Comprehensive Plan and the Zoning chapter of the City Code. FINDING: The proposal is consistent with the objectives of the City's Comprehensive Plan and City Code. It complies with all City, State and Federal requirements. The boat launch improvements, road improvements, and trail construction will improve safety and ease congestion within the park and where the park entrance intersects with Highway 41. c. The proposed project will be designed, constructed, operated and maintained so to be compatible in appearance with the existing or intended character of the general vicinity and will not change the essential character of that area. FINDING: The appearance and character of the general vicinity will not change. The applicant has made a reasonable effort to minimize impacts to wetlands by using the best road and trail alignment to avoid impacts, as well as use of a retaining wall near Wetland A. The present and future zoning of the parcel will not change. It will remain compatible with and enhance the existing and intended character, use, and appearance of the area. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 13 of 17 d. The proposed project will not be hazardous or disturbing to existing or planned neighboring uses. FINDING: The surrounding uses are zoned for Residential Medium -Density, Residential Large -Lot, and Residential Low -Density. The wetland impacts proposed as a result of the project are not foreseen to cause hazards or disturbance to existing or planned neighboring uses. The proposed project is considered an enhancement to neighboring uses, as well as providing increased safety for residents and users. e. The proposed project will be served adequately by essential public facilities and services, including streets, police and fire protection, drainage structures, refuse disposal, water and sewer systems and schools; or will be served adequately by such facilities and services provided by the persons or agencies responsible for the establishment of the proposed use. FINDING: Any changes to drainage structures or additional drainage structures needed Z a result of the proposed wetland impacts will be designed and constructed by the applicant's contracted consultant in compliance with City design standards. Proposed roadways and trails will be maintained by Carver County, and will be constructed entirely on regional park property. f. The proposed project will not create excessive requirements for public facilities and services and will not be detrimental to the economic welfare of the community. FINDING: The proposed wetland impacts associated with the Lake Minnewashta Regional Park Improvements Project will not create excessive need for public facilities and services. The park improvements project does not require additional services required by the City. In addition, the proposed roadway improvements, trail improvements, and boat launch improvements are foreseen as an enhancement to economic community welfare, by providing safety improvements and accessibility for residents and recreationalists. g. The proposed project will not involve uses, activities, processes, materials, equipment and conditions of operation that will be detrimental to any persons, property or the general welfare because of excessive production of traffic, noise, smoke, fumes, glare, odors, rodents, or trash. FINDING: The proposed wetland alterations are not expected to be detrimental to any persons, property or the general welfare. h. The proposed project will have vehicular approaches to the property which do not create traffic congestion or interfere with traffic or surrounding public thoroughfares. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 14 of 17 FINDING: The proposed wetland impacts will not create nor interfere with traffic and surrounding public thoroughfares. When completed, the proposed entrance and roadway improvements will result in eased congestion and will provide safer conditions for both pedestrian and vehicular traffic. i. The proposed project will not result in the destruction, loss or damage of solar access, natural, scenic or historic features of major significance. FINDING: The proposed wetland impacts associated with the project will have no impact on solar access, natural, scenic or historic features of major significance. The proposed project will be aesthetically compatible with the area. FINDING: The applicant has made a reasonable effort to minimize wetland impacts and retain aesthetical compatibility within the area. In addition, the proposed park improvements project will complement the area. k. The proposed project will not depreciate surrounding property values. FINDING: The proposed wetland impacts have been minimized to the greatest extent feasible, while still allowing for the park improvements project to occur. The proposed park improvements project will provide safety, greater access, and will be an asset to the surrounding properties. 1. The proposed project will meet standards prescribed for certain uses as provided in the City Code. 20-410 (b) When a permit is issued allowing wetland alteration, the following standards shall be followed: (1) The alteration will not have a net adverse effect on the ecological and hydrological characteristics of remaining wetland. FINDING: The applicant must meet the included conditions for the proposed wetland impacts in order to avoid an adverse effect on the ecological and hydrological characteristics of remaining wetland, as well as the requirements and regulations set forth by Sections 20-401— 20-421 of Chanhassen City Code. (2) It shall be located as to minimize the impact on vegetation. FINDING: Efforts have been made by the applicant to minimize the impact on wetlands and vegetation through a variety of measures, including minimizing impact to wooded areas Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 15 of 17 surrounding the current boat launch and the creation of wetland buffers. (3) It shall not adversely change water flow. FINDING: The applicant must meet the included conditions for the proposed wetland impacts in order to avoid an adverse effect on the hydraulic and hydrological characteristics of remaining wetland. The applicant is also in the process of obtaining the necessary permits from the Minnehaha Creek Watershed District in order to meet the District's Stormwater Rule. (4) The size of the altered area shall be limited to the minimum required for the proposed action. FINDING: The applicant has made a reasonable effort to limit the proposed wetland impacts to the minimum amount required in order to complete the construction of the park improvements project. During construction the contractor is required to follow approved plans to limit alterations to the minimum the project necessitates. (5) The disposal of any excess material is prohibited within remaining wetland areas. FINDING: The applicant and their contractor are prohibited from disposing of excess material within remaining wetland areas as well as any other activities which may negatively impact the remaining wetland areas. (6) The disposal of any excess material shall include proper erosion control and nutrient retention measures. FINDING: The applicant and their contractor must submit a satisfactory erosion and sediment control plan, and comply with all applicable sections of Chanhassen City Code, the City's Surface Water Management Plan, and the Minnesota Pollution Control Agency (MPCA). The applicant has obtained a National Pollutant Discharge Elimination System Construction Stormwater Permit, effective 7/17/2014, from the MPCA for the proposed project. (7) Alterations to any wetland area are prohibited during waterfowl breeding season or fish spawning season, unless it is determined by the city that the wetland is not used for waterfowl breeding or fish spawning. Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 16 of 17 FINDING: The applicant and their contractor are required to refrain from any wetland altering activity during waterfowl breeding and fish spawning season. (8) Alterations to wetland areas shall be mitigated in accordance with the requirements of this article if the activity results in a loss of wetland area and/or function and value of the wetland. FINDING: The applicant has submitted a replacement plan as part of the Joint Water Resource Permit Application for Wetland Replacement which was received on July 24, 2014. The applicant is proposing to replace the impacted area using wetland bank credits. The required replacement ratio is 2:1. This is consistent with Chapter 8420.0522. of the Wetland Conservation Act (WCA) Rules, and City Code, Chapter 20, Article VI. (9) Dedicated buffers in accordance with Sections 20-411. FINDING: The applicant must comply with the City's Wetland Protection Ordinance. In order to accommodate the improvements, the plan proposes impacts to two wetlands, totaling .05 acres of permanent wetland impact. The applicant, Carver County, is proposing to replace the permanently impacted area resulting from the Lake Minnewashta Regional Park Improvements project using wetland bank credits from wetland bank #1375. The requirement in this case calls for a 2:1 replacement ratio. This is consistent with Chapter 8420.0522. of the Wetland Conservation Act (WCA) Rules. The applicant must receive the City's approval of a wetland replacement plan prior to any wetland impact occurring. Staff recommends that the Planning Commission adopt the following motion: "The Chanhassen Planning Commission recommends that City Council approve Wetland Alteration Permit #2014-23 and WCA Permit Number 2014-03 to impact .05 acres of wetland and the wetland replacement plan under MN Rules Chapter 8420 which utilizes the purchase of .1 acres of wetland credit from bank #1375 for the purpose of the proposed Lake Minnewashta Regional Park Improvements Project; and authorize the Water Resources Coordinator to sign the joint water resource application for approval of wetland replacement as shown in plans dated July 22, 2014, subject to the following conditions: Planning Commission Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit Planning Case #2014-23 August 19, 2014 Page 17 of 17 Wetland replacement shall occur in a manner consistent with the Minnesota Wetland Conservation Act (MR 8420). The applicant shall receive the City's approval of a wetland replacement plan prior to any wetland impact occurring. 2. Wetland buffer areas shall be preserved, maintained, and/or created around all existing wetlands in compliance with Sections 20-401 — 20-421 of Chanhassen City Code. 3. The applicant shall apply for and obtain permits from the appropriate regulatory agencies, e.g. Minnesota Pollution Control Agency, Minnesota Department of Natural Resources, Minnesota Department of Transportation, Minnesota Board of Soil and Water Resources and Army Corps of Engineers and comply with their conditions of approval. 4. The applicant must submit a Bill of Sale for Wetland Banking Credits to the Minnesota Board of Water and Soil Resources signed by both the buyer and seller of designated wetland credits. 5. The applicant must obtain, and the City must have received copy of, an Application for Withdrawal of Wetland Credits from the Minnesota Wetland Bank signed and approved by the Minnesota Board of Water and Soil Resources prior to any wetland impacts. 6. A signed Landowner Statement and Contractor Responsibility form shall be provided to City prior to commencement of activity. ATTACHMENTS 1. Findings of Fact and Recommendation. 2. Development Review Application. 3. Joint Water Resource Application for Wetland Replacement and Attachments. 4. Affidavit of Mailing of Public Hearing Notice. G:TLAN12014 Planning Cases\2014-23 Minnmashta Regional Park WAP CITY OF CHANHASSEN CARVER COUNTY, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: The application of the Carver County Parks Department for a Wetland Alteration Permit for wetland replacement for proposed impacts to two wetlands, totaling .05 acres, as a part of the proposed Lake Minnewashta Regional Park Improvements Project — Planning Case 2014-23. On August 19, 2014, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of Carver County for a wetland alteration permit to impact two wetlands. The total area proposed to be impacted is .05 acres. The Planning Commission conducted a public hearing on the wetland alteration permit which was preceded by published notice. The Planning Commission heard testimony from all interested persons wishing to speak and now makes the following: FINDINGS OF FACT 1. The property is currently zoned Rural Residential (RR). 2. The property is guided in the Land Use Plan for Parks and Open Space. 3. The proposed project is located within the within Lake Minnewashta Regional Park, 6900 Hazeltine Boulevard, Section 4, TI 16 N, R23W, within the city of Chanhassen. 4. City code directs that a wetland alteration permit shall not be issued without having been first reviewed by the Planning Commission and approved by the City Council following the review and hearing procedures set forth for conditional use permits and the additional requirement of Minnesota Rules Chapter 8420.0230. Wetland Alteration and Conditional Use Criteria: The Planning Commission shall recommend a Wetland Alteration Permit and the Council shall issue such Wetland Alteration Permit only if it finds that: a. The proposed project will not be detrimental to or endanger the public health, safety, comfort, convenience or general welfare of the neighborhood or the city. FINDING: The proposed wetland impacts that will occur with the Lake Minnewashta Regional Park Improvements Project have not been found to pose danger to public health, safety, comfort, convenience or general welfare. The goal of the proposed project is to improve the amenities of the park for residents and recreationalists. b. The proposed project will be consistent with the objectives of the City's Comprehensive Plan and the Zoning chapter of the City Code. FINDING: The proposal is consistent with the objectives of the City's Comprehensive Plan and City Code. It complies with all City, State and Federal requirements. The boat launch improvements, road improvements, and trail construction will improve safety and ease congestion within the park and where the park entrance intersects with T.H. 41. c. The proposed project will be designed, constructed, operated and maintained so to be compatible in appearance with the existing or intended character of the general vicinity and will not change the essential character of that area. FINDING: The appearance and character of the general vicinity will not change. The applicant has made a reasonable effort to minimize impacts to wetlands by using the best road and trail alignment to avoid impacts, as well as use of a retaining wall near Wetland A. The present and future zoning of the parcel will not change. It will remain compatible with and enhance the existing and intended character, use, and appearance of the area. d. The proposed project will not be hazardous or disturbing to existing or planned neighboring uses. FINDING: The surrounding uses are zoned for Residential Medium -Density, Residential Large -Lot, and Residential Low -Density. The wetland impacts proposed as a result of the project are not foreseen to cause hazards or disturbance to existing or planned neighboring uses. The proposed project is considered an enhancement to neighboring uses, as well as providing increased safety for residents and users. e. The proposed project will be served adequately by essential public facilities and services, including streets, police and fire protection, drainage structures, refuse disposal, water and sewer systems and schools; or will be served adequately by such facilities and services provided by the persons or agencies responsible for the establishment of the proposed use. FINDING: Any changes to drainage structures or additional drainage structures needed as a result of the proposed wetland impacts will be designed and constructed by the applicant's contracted consultant in compliance with City design standards. Proposed roadways and trails will be maintained by Carver County, and will be constructed entirely on regional park property. f. The proposed project will not create excessive requirements for public facilities and services and will not be detrimental to the economic welfare of the community. FINDING: The proposed wetland impacts associated with the Lake Minnewashta Regional Park Improvements Project will not create excessive need for public facilities and services. The park improvements project does not require additional services required by the City. In addition, the proposed roadway improvements, trail improvements, and boat launch improvements are foreseen as an enhancement to economic community welfare, by providing safety improvements and accessibility for residents and recreationalists. g. The proposed project will not involve uses, activities, processes, materials, equipment and conditions of operation that will be detrimental to any persons, property or the general welfare because of excessive production of traffic, noise, smoke, fumes, glare, odors, rodents, or trash. FINDING: The proposed wetland alterations are not expected to be detrimental to any persons, property or the general welfare. h. The proposed project will have vehicular approaches to the property which do not create traffic congestion or interfere with traffic or surrounding public thoroughfares. FINDING: The proposed wetland impacts will not create nor interfere with traffic and surrounding public thoroughfares. When completed, the proposed entrance and roadway improvements will result in eased congestion and will provide safer conditions for both pedestrian and vehicular traffic. i. The proposed project will not result in the destruction, loss or damage of solar access, natural, scenic or historic features of major significance. FINDING: The proposed wetland impacts associated with the project will have no impact on solar access, natural, scenic or historic features of major significance. j. The proposed project will be aesthetically compatible with the area. FINDING: The applicant has made a reasonable effort to minimize wetland impacts and retain aesthetical compatibility within the area. In addition, the proposed park improvements project will complement the area. k. The proposed project will not depreciate surrounding property values. FINDING: The proposed wetland impacts have been minimized to the greatest extent feasible, while still allowing for the park improvements project to occur. The proposed park improvements project will provide safety, greater access, and will be an asset to the surrounding properties. 1. The proposed project will meet standards prescribed for certain uses as provided in the City Code. 20-410 (b) When a permit is issued allowing wetland alteration, the following standards shall be followed: (1) The alteration will not have a net adverse effect on the ecological and hydrological characteristics of remaining wetland. FINDING: The applicant must meet the included conditions for the proposed wetland impacts in order to avoid an adverse effect on the ecological and hydrological characteristics of remaining wetland, as well as the requirements and regulations set forth by Sections 20-401 — 20-421 of Chanhassen City Code. (2) It shall be located as to minimize the impact on vegetation. FINDING: Efforts have been made by the applicant to minimize the impact on wetlands and vegetation through a variety of measures, including minimizing impact to wooded areas surrounding the current boat launch and the creation of wetland buffers. (3) It shall not adversely change water flow. FINDING: The applicant must meet the included conditions for the proposed wetland impacts in order to avoid an adverse effect on the hydraulic and hydrological characteristics of remaining wetland. The applicant is also in the process of obtaining the necessary permits from the Minnehaha Creek Watershed District in order to meet the District's Stormwater Rule. (4) The size of the altered area shall be limited to the minimum required for the proposed action. FINDING: The applicant has made a reasonable effort to limit the proposed wetland impacts to the minimum amount required in order to complete the construction of the park improvements project. During construction the contractor is required to follow approved plans to limit alterations to the minimum the project necessitates. (5) The disposal of any excess material is prohibited within remaining wetland areas. FINDING: The applicant and their contractor are prohibited from disposing of excess material within remaining wetland areas as well as any other activities which may negatively impact the remaining wetland areas. (6) The disposal of any excess material shall include proper erosion control and nutrient retention measures. 4 FINDING: The applicant and their contractor must submit a satisfactory erosion and sediment control plan, and comply with all applicable sections of Chanhassen City Code, the City's Surface Water Management Plan, and the Minnesota Pollution Control Agency (MPCA). The applicant has obtained a National Pollutant Discharge Elimination System Construction Stormwater Permit, effective 7/17/2014, from the MPCA for the proposed project. (7) Alterations to any wetland area are prohibited during waterfowl breeding season or fish spawning season, unless it is determined by the city that the wetland is not used for waterfowl breeding or fish spawning. FINDING: The applicant and their contractor are required to refrain from any wetland altering activity during waterfowl breeding and fish spawning season. (8) Alterations to wetland areas shall be mitigated in accordance with the requirements of this article if the activity results in a loss of wetland area and/or function and value of the wetland. FINDING: The applicant has submitted a replacement plan as part of the Joint Water Resource Permit Application for Wetland Replacement which was received on July 24, 2014. The applicant is proposing to replace the impacted area using wetland bank credits. The required replacement ratio is 2:1. This is consistent with Chapter 8420.0522. of the Wetland Conservation Act (WCA) Rules, and City Code, Chapter 20, Article VI. (9) Dedicated buffers in accordance with Sections 20-411. FINDING: The applicant must comply with the City's Wetland Protection Ordinance. RECOMMENDATION The Planning Commission recommends that the City Council approve the application of Carver County for a Wetland Alteration Permit for wetland replacement for proposed impacts to two wetlands, totaling .05 acres, as a part of the proposed Lake Minnewashta Regional Park Improvements Project. ADOPTED by the Chanhassen Planning Commission this 19d day of August, 2014. CHANHASSEN PLANNING COMMISSION Its Chairman ri RECEIVED COMMUNITY DEVELOPMENT DEPARTMENT ,STT A�u�C t Planning Division -7700 Market Boulevard f Y OF CHANH CITY OF C111i1111111JSL11 Mailing Address - P.O. Box 147, Chanhassen, MN 5 Phone: (952) 227-1300 / Fax: (952) 227-1110 APPLICATION FOR DEVELOPMENT REVIEW Date Filed:? 1.9_14 66 -Day Review Deadline: q -—t(t — I Fknner d�lrt�i izL_ S ❑ Comprehensive Plan Amendment ......................... $600 ❑ Minor MUSA line for falling on-site sewers ..... $100 ❑ Conditional Use Permit ❑ Single -Family Residence ................................ $325 ❑ All Others........................................................ $425 ❑ Interim Use Permit ❑ In conjunction with Single -Family Residence.. $325 ❑ All Others ......................................................... $425 ❑ Gradings 1,000 cubic yards ........................... UBC ❑ Rezoning ❑ Planned Unit Development (PUD) ... _............. $750 ❑ Minor Amendment to existing PUD ................. $100 ❑ All Others ................... ..................................... $5W ❑ Sign Plan Review ..................................... _... ......... $150 ❑ Site Plan Review ❑ Administrative ..................................................$100 ❑ CommerciaUindustrialDistricts•......................$500 Plus $10 per 1,000 square feet of building area 'Include number of existing employees: and number of new employees: ❑ Residential Districts.........................................$500 Plus $5 per dwelling unit ADDITIONAL REQUIRED FEES: ❑ Notification Sign ................................................... $200 (City to Install and namove) ❑ Property Owners' List within 500......... $3 per address (City to generate -ase determined at pre -application meeting) ❑ Escrow for Recording Documents.. $50 per document (CUPISPRNACNARIWAP/Metes & Bounds Subdivision) Project N Property Parcel #: Total Acr ❑ Subdivision ❑ Create 3 lots or less ...... ............................ $300 ❑ Create over 3 lots ..........»....»...»5800 + $15 per lot ❑ Metes & Bounds .........................$300 + $50 per lot ❑ Consolidate Lots..............................................$150 ❑ Lot Line Adjustment .................. _................ .... $150 ❑ Final Plat*........................................................$250 'Requires addrdwal $450 escrow for attorney costs. Escrow will be required for other applications through the development contract. ❑ Vacation of Easements/Right-of-way ................... $300 (Additional recording fees may apply) ❑ Variance...............................................................$200 Wetland Alteration Permit ❑ Single -Family Residence .................... ....... _..$150 & All Others ....................................................... $275 ❑ Zoning Appeal ......................................................$100 ❑ Zoning Ordinance Amendment ............................ $500 NOTE: When multiple applications are processed conwnentiy, the appropriate fee shall be charged for seen application. (Refer to me appropriate Application Cheokllat for required submittal m/ormallon that must accompany this application) TOTAL FEES: $ uJ RI VEA Received from: Date Received: . Check Number: Section 2: Required Information Present Zoning: i7FYK s 4- OPEA/SPAtF l jig_ Requested Zoning: NO GHOV6F, Present Land Use Designation: f- DPGAI &44tF-Requested Land Use Designation: NO cNq &f, Existing Use of Property: ega"MI61 pat2e, Description of Proposal: PopSEA rMy[2eUEmSNtS TD A1dJA1Fl�RTl4 R�terhUr�t VA9 G hFPrr ❑ Check box if separate narrative is attached Ad�O SM_'R+i*A. Section 3: iFrOperty Owner.and.Aoplicant.lhfoeMatiori 4 APPLICANT OTHER THAN PROPERTY OWNER: In signing this application, I, as applicant, represent to have obtained authorization from the property owner to file this application, I agree to be bound by conditions of approval, subject only to .the right to object at the hearings on the application or during the appeal perlod. If this application has not been signed by the property owner, I have attached separate documentation of full legal capacity to file the application. This application should be processed in my name and I am the party whom the City should contact regarding any matter pertaining to this application. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc, with an estimate prior to any authorization to proceed with the study. I certify that the information and exhibits submitted are true end correct. Name: Contact: Address: Phone: _ City/State/Zip: Cell: Email: Fax: Signature: Date: PROPERTY OWNER: In signing this application. I, as property owner, have full legal capacity to, and hereby do, authorize the filing of this application. I understand that conditions of approval are binding and agree to be bound by those conditions, subject only to the right to object at the hearings or during the appeal periods. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. I certify that the information and exhibits submitted are true and correct. Name: 01 RM EA?= C.oJr'T (Pr-yS Contact: AAM-nt4 k),ALBA Address: ll3(p0 lA1.N 21?-, CokTE. 2 Phone: RS2.4(do •5250 City/State/Zip: CC( -0C -Ne- , Mni e52'22 Cell: Email: 54IWM&h 0�1ro. ✓'. mr1.05 Fax: 962.4UIP, 5223 Signature: Date: 1T 14 fs A U'Qf�'G ;ter This application must be complete6 In full and be typewritten or clearly printed and must be accompanied by all Information and plans required by applicable City Ordinance provisions. Before filing this application, refer to the appropriate Application Checklist and confer with the Planning Department to determine the speciflc ordinance and applicable procedural requirements. A determination of completeness of the application shall be made within 15 business days of application submittal. A written notice of application deficiencies shall be mailed to the applicant within 15 business days of application. PROJECT ENGINEER (if applicable) Name: Contact: Address: Phone: City/State/Zip: Cell: Email: Fax Se —dion 4v Notification Information Who should receive copies of staff reports? 'Other Contact Information: Property Owner Via:Email ❑ Mailed Paper Copy Name: Mmall - ❑ Applicant Via: ❑ Mailed Paper Copy Address: __- ❑ Engineer Via: ❑ Email ❑ Mailed Paper Copy City/State/Zip: ❑ Other' Via: ❑ Email ❑ Mailed Paper Copy Email: r A WSB engineering, planning, environmental • construction 701 Xenia Avenue South Suite 300 Minneapolis, MN 55416 Tel 763-5414800 Fax: 763-541-1700 Memorandum To: Courtney Hall, Minnehaha Creek Watershed District Melissa Jenny, US Corps of Engineers Ben Meyer, BWSR Jennie Skaneke, DNR Brooke Haworth, DNR Mike Wanous, Carver SWCD Terry Jeffery, City of Chanhassen Copy: Marty Walsh, Carver County Morgan Dawley, WSB & Associates From: Andi Moffat, WSB & Associates Date: July 22, 2014 Re: Carver County Lake Minnewashta Regional Park Improvements Permit Application WSB Project No. 1945-050 On behalf of Carver County, attached, please find a permit application and supporting documents for the Lake Minnewashta Regional Park Improvement Project. This application is for wetland impacts and watershed district approval. Proiect Description: Carver County Parks has received grant funding for proposed improvements to Lake Minnewashta Regional Park that incudes; road reshaping/paving (5657 linear feet), an access road to the dog park (1587 linear feet), boat launch improvements, some trail improvements (500 linear feet realigned), and construction of an entrance turnaround. The purpose of this project is to improve the public amenities within the park as well as provide safer access along the road for the public. The project is within the Minnehaha Creek Watershed District (MCWD). The Riley -Purgatory Bluff Creek Watershed District (RPBCWD) has indicated the project is not within their boundaries. In total, the project will disturb 10.37 acres of land. The existing impervious surface is 6.04 acres and the proposed impervious is 6.49 acres for a net increase of 0.45 acres- This includes 500 linear feet of trail improvements, the reconstructed boat launch, reconstructed parking area for the boat launch, and entrance turnaround area. With the trail, new bituminous trail is being constructed as well as demarcation of a cross-country skiing trail. The road within the park will be resurfaced from gravel to bituminous and a bypass lane at the park entrance will be constructed. Equal Opportunity Employer wsbeng.com r-oiwsoww®�r�xmn-on_n�-,y�> mW:+�.m�. July 22, 2014 Page 2 A previous delineation was completed in the Lake Minnewashta Regional Park by SRF Consulting Group and LGU approved in 2011. The 2011 wetland boundaries are shown on the project plans. Additional wetland was delineated by WSB in September 2013. A complete delineation report was submitted to the City of Chanhassen as the LGU for WCA on February 21, 2014. Attached with this application are the following appendices: Appendix A — Figures Appendix B — Plan set Appendix C — NPDES Permit Appendix D — Supporting Stormwater Management Analysis A discussion of how the project meets the MCWD rules is provided below. Wetlands and Buffers Wetlands have been avoided to the extent practical and the project anticipates 2191 sf (0.05 acres) of wetland impact. About 0.383 sf (0.009 acres) of trail will also be removed from a wetland. The attached wetland application addresses wetland sequencing. Wetland impacts are proposed to be mitigated by purchase of wetland credits, anticipated through the purchase of 0.1 acres from the Jeff Richards bank # 1375 in Carver County. The purchase agreement will be submitted under separate cover. The MCWD requires wetland buffers for projects that trigger the wetland or stormwater rule, as this project does. A buffer on public land, as is the case with this project, can be documented by written agreement with the District and the County. This is the County's preferred route. The buffer width is based on the District's wetland assessment. Based on this assessment, the wetlands have the following classifications and resulting buffer widths and are shown on the attached plans in Appendix A. Wetland (SRF Wetland Management Watershed Required Provided delineation Type (at Classification District Buffer Width Buffer Width label in project (based on (max/min) in in feet parentheses) area) MCWD feet assessment A 3 Manage 2 MCWD 30/16 3-30 D 3 Preserve MCWD 75/67 0 E (W9) 6 Manage 1 MCWD MCWD — 40 10-40 /34 F 21 6 Preserve MCWD 75/67 3-75 H 22) 12 Mana e 3 MCWD 120/16 0-20 Erosion Control Plans The construction plans attached include erosion control and turf establishment plans as Sheet 20-23. The SWPPP is in Sheets 24-27. These plans meet the requirements of the erosion control rule. The plans include biorolls, silt fence, rock check entrance, and seeding. Receiving K'N19f5-0$9NEmnPamni MFMp-OP_2M�R[mcy�pplvd4C6dKt July 22, 2014 Page 3 waters include surrounding small wetlands and ultimately Lake Minnewashta. A copy of the NPDES permit is also attached. Stormwater Management As stated, this project involves paving approximately 1 -mile of the existing gravel entrance road from Hazeltine Boulevard into Lake Minnewashta Regional Park. Additionally, the existing gravel boat launch parking lots (Appendix D) will be removed. The southerly lot will be replaced with an expanded parking lot and new boat launch (see plan set in Appendix B). Existing conditions land use is park land. Drainage patterns will not change from existing. • The total project area is 10.37 acres • Existing impervious surfaces in MCWD (including gravel) = 6.04 acres • Proposed impervious surfaces in MCWD = 6.49 acres • Increase in impervious surfaces in MCWD = 0.45 acres Based MCWD Stormwater Management Rule Table 5 the project is required to provide phosphorus control and rate control for the net increase in impervious surfaces. The increase in impervious is entirely due to the proposed boat launch parking lot; therefore BMPs have been focused in this location. Rate Control: MCWD requires that applicants demonstrate that their discharge rates have not increased from the pre -development for the 1 -year, 10 -year, and 100 -year critical storm events. There is no increase in impervious surfaces for the proposed entrance road and therefore no change in discharge rate. The existing culverts are proposed to be replaced in-kind. The existing and proposed discharge rates to Lake Minnewashta from the proposed boat launch parking lot are listed in Table 1. Table 1: Discharge Rate Com arison *Includes overflow over Brockton Road. The proposed discharge rates are less than or equal to existing for all storm events. See attached HydroCAD output for detailed results in Appendix D. Water Quality: MCWD requires phosphorus loadings for post -development to be less than or equal to existing phosphorus levels. P8 modeling was used to evaluate the water quality treatment of the proposed BMPs. Pre -development TP load = 9.5 lb/yr Post -development TP load = 0.5 lb/yr R 0'214 -Ag® aMt"U=E 2 -Year 10 -Year 100 - (CFS) (CFS) Year* CFS Existing 1.0 4.9 12.6 Proposed 1.9 6.8 7.4 *Includes overflow over Brockton Road. The proposed discharge rates are less than or equal to existing for all storm events. See attached HydroCAD output for detailed results in Appendix D. Water Quality: MCWD requires phosphorus loadings for post -development to be less than or equal to existing phosphorus levels. P8 modeling was used to evaluate the water quality treatment of the proposed BMPs. Pre -development TP load = 9.5 lb/yr Post -development TP load = 0.5 lb/yr R 0'214 -Ag® aMt"U=E July 22, 2014 Page 4 A series of infiltration basins and a pond are proposed within the boat launch parking lot to provide water quality treatment. Supporting Documentation: The documents provided with this memo for review are: • Drainage Maps — Appendix D • HydroCAD Results — Appendix D • P8 results — Appendix D • Plan Set — Appendix B Floodplain FEMA floodplain elevation is 945.0. The OHW is 944.5. The existing boat launch will be reconstructed to accommodate better public access in this area. Currently, the boat launch has limited capacity and one launch area. The proposed launch will be reconstructed in the current location and include a double launch. The boat launch will be constructed to meet the DNR's Boat Ramp guidelines and as such, does not require a permit from the DNR. The design includes a double launch with concrete planks. The launch will extend from the upland side at elevation 946.3 into the water to elevation 943.93 as shown on the plans. The boat launch will result in 35 cy of fill in the floodplain. Based on the size of the basin, this will not increase the floodplain elevation of the lake. Proiect Timing: The project is anticipated to start September 1, 2014 and be completed October 31, 2015. Permit Request: On behalf of the City, we are requesting a permit from the MCWD, approval from the LGU for the WCA, and approval from the COE under Section 404. If you have any questions or need additional information, please feel free to call me at 763-287-7196. xn�www�na��rwm.,Mwo-M14-n y,ovin do Print Form WATER RESOURCE PERMIT APPLICATION FORM Use this form to notify/apply to the Mirnehaha Creek Watershed District (MCWD) of a proposed projector work which may fall within their jurisdiction. Fill out this form completely and submit with your site plan, maps, etc. to the MCWD at: 15320 Minnetonka Blvd. Minnetonka, MN 55345. Keep a copy for your records. YOU MUST OBTAIN ALL REQUIRED AUTHORIZATIONS BEFORE BEGINNING WORK. 1. Name of each property owner: Mailing Address: OIV z 12 IV City: Co o r p- State: !!&f Zip: ;Y� 2 z, Email Address: nakr&Lj6& PhonegSZ Fax: 2. Property Owner Representative Information (not required) (licensed contractor, architect, an ineer, etc...) Business Name: _W5b Representative Name: M P Business Address -/01 Kopin Ae- -51.1.1 C � City: kkpo State: "/%J Zip:-Mj-S-4[/(0 Email Address: Q crF4Q W]heyw:cn&t Phone: -2 - Fax: 3. Project Address: fA tL City: Leh State: MA) Zip: _"351 Qtr Section(s): Section(s): 14 Township(s): AttAL Range(s): 23 Lot: Block: Subdivision: PID: 4. Size of project parcel (square feet or acres): olume Area of disturbance (square feet): of excavation fill (cubic yards):_ 35 Area of existing impervious surface: b.04 Area of proposed impervious surface: 4,I� Length of shoreline affected (feet): _Y_CL- Waterbody (& bay if applicable): laky lYr idw tUUSI 5. Type of permit being applied for (Check all that apply): JS( EROSION CONTROL ❑ WATERBODY CROSSINGS/STRUCTURES FLOODPLAIN ALTERATION iK STORMWATER MANAGEMENT $I WETLAND PROTECTION ❑ APPROPRIATIONS ❑ DREDGING ❑ ILLICIT DISCHARGE ❑ SHORELINE/STREAMBANK STABILIZATION 6. Project purpose (Check all that apply): ❑ SINGLE FAMILY HOME 0 MULTIFAMILY RESIDENTIAL (apartments) j!f ROAD CONSTRUCTION ❑ COMMERCIAL or INSTITUTIONAL ❑ UTILITIES ❑ SUBDIVISIONS (include number of lots) ❑ DREDGING O LANDSCAPING (pools, berms, etc.) ❑ SHORELINE/STREAMBANK STABILIZATION O OTHER (DESCRIBE): 7. NPDES/SDS General Stormwater Permit Number (if applicable): 000 8. Waterbody receiving runoff from site: l 9. Project Timeline: StartDate: L Completion Date: t 3l O I Permits have been applied for: City County ❑ MN Pollution Control Agency NR ❑ COE Permits have been received: City _ County --0 MN Pollution Control Agency DNR- -Q COE :By signing below, I hereby request a permit to authorize the activities described herein. I certify that I am familiar with MCWD Rules and that the proposed activity will be conducted in compliance with these Rules. l am familiar with the information contained in this application and, to the best of my knowledge and belief, all information is true, complete and accurate. I understand that proceeding with work before all required authorizations are obtained may be subject to federal, state and/or local ad ' ' rave, civil and/or criminal penalties. i/ .� ( t'14 M. � G .S' Each Property avian Dab Revised 7/15/13 Page I of I Joint Application Form for Activities Affecting Water Resources in Minnesota This joint application form is the accepted means for Initiating revew of proposals that may affect a water resource (wetland, tributary, lake, etc.) in the State of Minnesota under state and federal regulatory programs. Applicants for Minnesota Department of Natural Resources (DNR) Public Waters permits MUST use the MPARS online permitting system for submitting applications to the DNR. Applicants can use the informs tion entered into MPARS to substitute for completing parts of this joint application form (see the paragraph on IMPAIRS at the end of the joint applitation form Instructions for additional Information). This form Is only applicable to the water resource aspects of proposed projects under slate and federal regu:atory programs; other local applications and approvals may be requ'red. Depending on the nature of the project and the location and type of water resources impacted, multiple authorizations may be required as different regulatory programs have different types of iurisdiction over different types of resources. Regulatory Review Structure Federal The St. Paul District of the U.S. Army Corps of Engineers ICcrpsl Is the federal agency that regulates discharges of dredged or fill material into waters of the United States [wet ands, tributaries, takes, etc.) under Section 404 of the Clean Water Act (CWAi and regulates work In navigable waters under Section 10 of the Rivers and Harbors Act. Applications are assigned to Corps project managers who are responsible for implementing the Corps regulatory program within a particular geographic area. State There are three state regulatory programs that regulate activities affecting water resources. The Welland Conservation Act (WCA) regulates most activities affecting wetlands. It Is administered by local government units (LGUs) which can be counties, townships, cities, watershed districts, watershed management organizations or state agencies (on state-owned land). The Minnesota DNR Division of Ecological ane Water Resources issues perrrits for work in specially -designated public waters via the Public Waters Work Permit Program (DNR Public Waters Permits). The Minnesota Pollution Control Agency (MPCAf under Section 401 of the Clean Water Act certifies that discharges of dredged or fill material authorized by a federal permit or license comply with state water quality standards. One or more of these regulatory programs may be appilcabe to any one project. Required Information Prior to submitting an application, applicants are strongly encouraged to seek input from the Corps Project Manager and LGU staff to identify regulatory Issues and required application materials for their proposed project. Project proponents can request a pre - application consultation wit? the Cops and LGU to discuss their proposed project by providing the Information required In Sections 1 through 5 of this joint application form to facilitate a meaningfu discussion about their project. Many LGUS provide a venue (such as regularly scheduled technical evaluation panel meetingsl for potential applicants to discuss their projects with multiple agencies prior to submitting an application. Contact Information is provided below. The following bullets outline the Information general y required for several common types of determinations/authorizations. • For del neation approvals and/or jurisdictional determinatiors, submit Parts 1, 2 and 5, and Attachment A. • For act vities involving CWA/WCA exemptions, WCA no4oss determinations, and activities not requiring mitigation, submit Parts 1 through 5, and Attachment B. For activities requiring compensatory mitigation/replacement plan, submit Parts 1 thru 5, and Attachments C and D. • For local road authority activities that qualify for the state's local road wetland replacement program, submit Parts 1 through 5, and Attachments C. D (if applicable), and E to froth the Corps and tie LGU. Minnesota Interagency Water Resource Application Form February 2014 Page 1 of 13 Submission Instructions Serd the completed joint application form and all required attachments to: U.S Army Corps of Engineers Applications maybe sent directly to the appropriate Corps Office. For a current listing of areas of responsibilities and contact information, visit the St. Paul District's website at littrid1www.mvo usare.amry.miJrdssiprx/Rezulatory.asox and select "Minnesota" from the contact Information box. Alternatively, applications maybe sent directly to the St. Paul District Headquarters and the Corps will forward them to the appropriate field office. Section 401 Water quality Certification: Applicants do not need to submit the joint application form to the MPGA unless specifically requested. The MPGA will request a copy of the completed joirt application form directly from an applicant when they determine an individual 401 water quality ce-tification is required For a proposed project. Wetland Conservation Act local Government Unit: Send to the appropriate Local Government Unit. 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. DNR Public Waters Permitting: In 2014 the DNR will begin using the Minnesota DNR Permitting and Reporting System (MPARS) for submission of Public Waters permit applications (https�//webaopsli dor state mn us/moan/public/authentication/login). Applicants for Public Waters permits MUST use the MPARS online permitting system for submitting applications to the DNR. To avoid duplication and to streamline the application process among the various resource agencies, applicants can use the information entered Into MPARS to substitute for completing parts of tnis joint application Form. The MPARS print/save function will provide the applicant with a copy of the Public Waters permit application which, at a minimum, will satisfy Parts one and two of this joint application. For certain types of activities, the MPARS appikation may also provide all of the necessaryinformation required under Parts three and four of tie joint application. However, it is the responsibility of the Applicant to make sure that the joint application contains all of the required irformation, including identification of all aquatic resources impacted by the project Isee Part four of the joint application). After confirming that the MPARS application contains all of the required information In Parts one and two the Applicant may attach a copy to the joint application and fall In any missing information in the remainder of the joint application. Minnesota Interagency Water Resource Application Form February 2014 Page 2 of 13 Project Name and/or Number. PART ONE: Applicant Information If applicant Is an entity (company, govemmen-entity, partnership, etc.), ar authorized contact person must be icentified. If the applicant Is using an agent (consultant, lawyer, or other third party) and has authorized them to act on their behalf, the agent's contact information must also be provided. Applicant/Landowner Name: Marty Walsh, Carver County Mailing Address: 11360 Hwy 212 West, Cologne, MN 55322 Phone: 952-466-5252 E-mail Address: mwalsh@co.carver.mn.us Authorized Contact (do not complete if same as above): Same as above Mailing Address: Phone: E-mail Address: Agent Name: W5B & Associates—Andl Moffatt Mailing Address: 701 Xenia Ave — Suite 300, Mpis, MN 55416 Phone: 763-237-7196 Email Address: amoffatt@wsbeng.com PART TWO: Site Location Information County: Carver City/Township: Chanhassen Parcel ID and/or Address: Lake Mlnnewashta Regional Park Legal Description (Section, Township, Range): Section 4, Twp 116N, R23W Lat/Long (decimal degrees): Attach a map showing the location of the site in relation to local streets, roads, highways. See attached figures Approximate size of site (acres) or if a linear project, length (feet): 7,244 linear feet If you know that your proposal will require an individual Permit from the U.S. Army Corps of Engineers, you must provide the names and addresses of all property owners adjacent to the project site. This information may be provided by attaching a list to your application or by using block 25 of the Application for Department of :he Army permit which can be obtained at: htto://www.mvp.us-ce.army.mill Po•talsfc-7/docs/reeulator JRegulato,vDocsJenpform 4345 2012oct.pdf PART THREE: General Project/Site Information If this application Is related to a delineation approval, exemption determination, jurisdictional determiratlon, or other correspondence submitted prior to this application then cescribe that here and provide the Corps of Engineers project number. Describe the project that is being proposed, the project purpose and need, and schedule for implementation and completion. The project description must ful y describe the nature and scope of the proposed activity including a description of all project elements that effect aquatic resources (wetland, lake, tributary, etc.) and must also Include plans and cross section or profile drawings showing the location, character, and dimensions of all proposed activities and aquatic resource Impacts. Carver County Parks has received grant funding for proposed improvements to Lake Minnewashta Regional Park that Incudes; road reshaping/paving (5657 linear feed, an access road to the dog park (1587 linear feet), boat launch Improvements, some trail Improvements (500 linear feet realigned), and construction of an entrance turnaround. The purpose of this project is to improve the public amenities within the park as well as Miinesota Interagency Water Resource Application Form Feoruar, 2014 Page 3 of 13 provide safer access along the road for the public In total, the project will disturb 10.37 acres of land. The existing impervious surface is 6.04 acres and the proposed impervious is 6.49 acres for a net increase of 0.45 acres. This includes 500 linear feet of trail improvements, the reconstructed boat launch, and a reconstructed parking area for the boat launch. With the trail, new bituminous trail is being constructed as well as demarcation of a cross-country skiing trail. The road within the park will be resurfaced from gravel to bituminous and a bypass lane at the park entrance will be constructed. A previous delineation was completed in the Lake Minnewashta Regional Park by SRF Consulting Group and LGU approved in 2011. The 2011 wetland boundaries are shown on the project plans. Additional wetland was delineated by WSB in September 2013. A complete delineation report was submitted to the City of Chanhassen as the LGU for WCA on February 21, 2014. Wetlands have been avoided to the extent practical and the project anticipates 2191 sf 10.05 acres) of wetland impact. 383 sf (0.009 acres) of trail will also he removed from a wetland. Additionally, the boat launch will be reconstructed to accommodate better public access in this area. Minnesota Interagency Water Resource Application Form February 2014 Page 4 of 13 Project Name and/or Number: PART FOUR: Aquatic Resource Impacts Summary H your proposed project involves a direct or Indirect impact to an aquatic resource (wetland, lake, tributary, etc.) identify each Impact in the table below. Include all anticipated Impacts, Including those expected to be temporary. Attach an overhead view map, aerial photo, and/or drawing showing all of the aquatic resources In the project area and the Iocaton(s( of the proposed Impacts. Label each aquatic resource on the map with a reference number or letter and Identify the impacts In the following table. 'If Impacts are temporary; enter the duration of the Impacts In days next to the 'T'- For example, a project with a temporary access fil that would be removed after 22D days would be entered 'T (220(". 'Impacts less than 0.01 acre should be reported In square feet. Impacts 0.01 ane or greater should be reported as acres and rounded to the nearest 0.01 acre. Tributary impacts must be reported in linear feet of impact and an area of impact by indicating fust the linear feet of Impact along the Bowline of the stream followed by the area impact in parentheses). For example, a project that impacts 50 feet of a stream that is 6 feet wide would be reported as SO B (300 square feel). 'MIS is genteelly only applicable if you are applying for a de minimis exemption under MN Rules 8420. D420 Subp. S. otherwise enter 'N/A'. 'Use Weiland Plants and P12nr Community Types of Minnesota and bNsrnnsin 3"' Ed. as modBed in MN Rules 6420.0405 Subp. 2. 'Re°er to Msjor Watershed and Bank Service Area naps In MN Rules 8420.0522 Subp. 7. If any of the above )dent fed impacts have already occurred, identify which impacts they are and the circumstances associated with each: NA PART FIVE: Applicant Signature ❑ Check here if you are requesting a ore -application consultation with the Corps and LGU based on the information you have provided. Regulatory entities will not initiate a formal appiicat on review If this box is checked. By signature below, I attest :hat the information in this application is complete and accurate. I further atter' that I possess the authority to undertake the work described herein. Signature: /' ` 4;,4, L'vw— Date. 7/'Q/ 1�4 1 hereby authorize Andl Moffatt, WSR St Associates to act on my behalf as cry agent in the processing of this appbcatien and to furnish, upon request, supplemental information in support of this application. Ii ' The term impact" as used in this joint application form is a generic term used for disclosure purposes to identify activities that may require approval from one or more regulatory agencies. For purposes of this form it is not meant to indicate whether or not those activities may require mitigation/replacement. Minnesota Interagency Water Resource App ication Form February 2014 Page 5 of 13 Type of Impact Duration of County, Major Aquatic Resource Aq Aquatic (fill, excavate, Impact Overall Size of Existing Plant Watershed e, ID (as noted on source Type drain, or Permanent (P) Size of Impact' Aquatic Community and Bank (wetland, lake, overhead view) remove or Temporary Resource' e a Service Area R tributary etc} vegetation( s m pads Impact Area of Impact Area' G (W10) Wetland Fill P 979 sf 979 sf Wet meadow Carver, 20, 7 H W22 Wetland nil P 1212 sf 5661 sf Wet Meadow Carver, 'If Impacts are temporary; enter the duration of the Impacts In days next to the 'T'- For example, a project with a temporary access fil that would be removed after 22D days would be entered 'T (220(". 'Impacts less than 0.01 acre should be reported In square feet. Impacts 0.01 ane or greater should be reported as acres and rounded to the nearest 0.01 acre. Tributary impacts must be reported in linear feet of impact and an area of impact by indicating fust the linear feet of Impact along the Bowline of the stream followed by the area impact in parentheses). For example, a project that impacts 50 feet of a stream that is 6 feet wide would be reported as SO B (300 square feel). 'MIS is genteelly only applicable if you are applying for a de minimis exemption under MN Rules 8420. D420 Subp. S. otherwise enter 'N/A'. 'Use Weiland Plants and P12nr Community Types of Minnesota and bNsrnnsin 3"' Ed. as modBed in MN Rules 6420.0405 Subp. 2. 'Re°er to Msjor Watershed and Bank Service Area naps In MN Rules 8420.0522 Subp. 7. If any of the above )dent fed impacts have already occurred, identify which impacts they are and the circumstances associated with each: NA PART FIVE: Applicant Signature ❑ Check here if you are requesting a ore -application consultation with the Corps and LGU based on the information you have provided. Regulatory entities will not initiate a formal appiicat on review If this box is checked. By signature below, I attest :hat the information in this application is complete and accurate. I further atter' that I possess the authority to undertake the work described herein. Signature: /' ` 4;,4, L'vw— Date. 7/'Q/ 1�4 1 hereby authorize Andl Moffatt, WSR St Associates to act on my behalf as cry agent in the processing of this appbcatien and to furnish, upon request, supplemental information in support of this application. Ii ' The term impact" as used in this joint application form is a generic term used for disclosure purposes to identify activities that may require approval from one or more regulatory agencies. For purposes of this form it is not meant to indicate whether or not those activities may require mitigation/replacement. Minnesota Interagency Water Resource App ication Form February 2014 Page 5 of 13 Project Name and/or Number: Attachment B Supporting Information for Applications Involving Exemptions, No Loss Determinations, and Activities Not Requiring Mitigation Complete this part If you ma'.ntain that the identified aquatic esource impacts in Part Four do not require wetland replacement/compensatory mitigation OR IJyou are seeking verification that the proposed water resource Impacts are elthe• exempt from replacement or are not under CWA/WCAjurisdiction. Identify the specific exemption or no -loss provision for which you believe your project or site qualifies: NA Provide a detailed explanation of how your project or site qualifies for the above. Be specific and provide and refer to attachments and exhibits that support your contention. Applicants should refer to rules (e.g. WCA rules), guidance documents (e.g. BWSR guidance, Corpsguidance letters/public notices), and permit conditions (e -g. Corps General Permit conditions) to determine the necessary information to support the application. Applicants are strongly encouraged to contact the WCA LGU and Corps Project Manager prior to submitting an applicat on if they are unsure of what type of information to provide: NA Minnesota interagency Water Resource Application Form February 2014 Page 7 of 13 P•oject Name andl Numoer: Attachment C Avoidance and Minimization Project Purpose, Need, and Requirements- Clearly state the purpose o` your project and need for your project. Also include a description of any specif c requirements of the project as they relate to project location, project footprint, water management, and ary other applicable requirements. Attach an overhead plan s-leet showing all relevant features of the project (buildings, roads, e:c.), aquatic resource features (impact areas noted) and construction details (grading plans, storm wale, management plans, etc.), referencing these as necessary: Carver County Parks has received grant funding for proposed improvements to take Minnewashta Regional Park that incudes; road reshaping/paving (Main Park), boat launch improvements, some trait improvements, and construction of an entrance turnaround. The purpose of this project is to improve the public amenities within the park as well as provide cater access along the road for the public. The main road through the park is currently gravel. This project will pave the road to improve safety and reduce sediment runoff from the road to the surrounding area. The main entrance will also be reconstructed to provide better, safer access and to include a turnaround area. The boat launch is in need of repair, so the project includes reconstructing the existing boat launch to meet DNR requirements. The parking area at the boat launch will also be reconstructed and the existing gravel paved. This will reduce sediment directed to Lake Minnewashta. A trail near the boat launch parking lot will also be reconstructed to provide safer pedestrian access, recreation. This will Include designating a cross-country ski trail in this location also. Avoidance. Both the CWA and the WCA require that impacts :o aquat c resources be avoided if practicable alternatives exist. Clearly describe all on-s;te measures considered to avoid impacts to aquatic resources and discuss at least two project a ternatives that avcid all impacts to aquatic resources on the site. These alternatives may Include alternative site p ans, alternate sites, and/or not doing the project. AI•erratives shoved be feasible and prudent (see MN Rules 8420.0520 Subp. 2 Q. Applicants are encouraged to attach drawings and plans to support their analysis: Welland impacts have been avoided to the greatest extent possible. Wetland A is located at the entrance to the park. Initial design of the road included the road slope impacting this wetland. However, the design has been changed to include a retaining wall in this location to completely avoid the wetland impact. Other wetlands, including Wetland E, F. B, and C have also been completely avoided. Wetlands G and H include the only impact on the project for a total of 2191 sf. Wetland G is impacts from the boat launch parking lot reconstruction. To avoid additional impacts to the wooded area north of the parking lot or completely realigning the road on the south, impacts to this wetland are unavoidable. Wetland H will be imparted front moving the trail in this location. Currently, the existing trail bisects the wetland. The project will remove this existing trail and move it to skirt along the side of the trail. Approximately 383 sf of wetland will be restored with the removal of the trail in this location. Credit is not being sought for this removal, but should be recognized with minimization efforts. There is an existing boat launch within the project that will be reconstructed to accommodate the additional boat traffic at this location. This boat launch design is in conformance with DNR requirements and as such, does not require a DNR permit. Minimization. Both the CWA and the WCA require that all unavoldable impacts to aquatic resources be min7mized :o the greatest extent practicable. Discuss all features o- the proposed project that have been modified to minimize the impacts to water resources (see MN Rules 8420.0520 Subp 4): Impact to Wetland His from the realignment of the trail. Currently, a trail goes through the existing wetland. This will be removed and the trail aligned on the edge. The trail will be constructed nearly at grade, so slopes and impacts have been minimized. Minnesota Interagency Water Resource Application Form February 2014 Page 8 of 13 Off -Site Alternatives. An off-site alternatives analysis is not required for all permit applicalons. If you know that your proposal will require an individual permit (standard permit or letter of permission) from the U.S. Army Corps of Engineers, you may be required to provide an off-site alternatives analysis. The ahennatives analysis Is not required for a complete applkation but must be orovidec dur ng the review process in order fo• the Corps to complete the evaluation of your application and each a final decision, Applicants with questions about when an off-site alternatives analysis is required should contact their Cops Project Manager. NA Mhnesota interagency Water Resource Application Form February 2014 Page 9 of 13 Project Name and/or Number: Attachment D Replacement/Compensatory Mitigation Complete this part if your application involves wetland replacement/compensatory mitigation not associated with the local road wetland replacement program. Applicants should consult Corps mitigation guidelines and WCA rules for requirements. Replacement/Compensatory Mitigation via wetland Banking. Complete this section if you are proposing to use credits from an existing wetland bank (with an account number in the State wetland banking system) for all or part of your replacement/compensatory mitigation requirements. Wetland Bank Major Account# County Watershed# Bank Service Area # Credit Type (if applicable) Number of Credits 1375 Carver 19 7 SWC 0.10 Applicants should attach documentation indicating that they have contacted the wetland bank account owner and reached at least a tentative agreement to utilize the identified credits for the project. This documentation could be a signed purchase agreement, signed application for withdrawal of credits or some other correspondence indicating an agreement between the applicant and the bank owner. However, applicants are advised not to enter into a binding agreement to purchase credits until the mitigation plan is approved by the Corps and LGU. Project -Specific Replacement/Permittee Responsible Mitigation. Complete this section if you are proposing to pursue actions (restoration, creation, preservation, etc.) to generate wetland replacement/compensatory mitigation credits for this proposed project. WCAActionEligible for Credit' Corps Mitigation Bank Credit% Credits Major Compensation Acres Requested Anticipated a County Watershed # Arearin# Technique Area # Refer to the name and subpart number in MN Rule 8420.0526. 'Refer to the technique listed in St. Paul District Policyfor Wetland Compensatory Mitigation in Minnesota. 31f WCA and Corps crediting differs, then enter both numbers and distinguish which is Corps and which is WCA Explain how each proposed action or technique will be completed (e.g. wetland hydrology will be restored by breaking the tile......) and how the proposal meets the crediting criteria associated with it. Applicants should refer to the Corps mitigation policy language, WCA rule language, and all associated Corps and WCA guidance related to the action or technique: Attach a site location map, soils map, recent aerial photograph, and any other maps to show the location and other relevant features of each wetland replacement/mitigation site. Discuss in detail existing vegetation, existing landscape features, land use (on and surrounding the site), existing soils, drainage systems (if present), and water sources and movement. Include a topographic map showing key features related to hydrology and water flow (inlets, outlets, ditches, pumps, etc.): Minnesota Interagency Water Resource Application Form February 2014 Page 10 of 13 Project Name and/or Number: Attach a map of the existing aquatic resources, associated delineation report, and any documentation of regulatory review or approval. Discuss as necessary: For actions involving construction activities, attach construction plans and specifications with all relevant details. Discuss and provide documentation of a hydrologic and hydraulic analysis of the site to define existing conditions, predict project outcomes, identify specific project performance standards and avoid adverse offsite impacts. Plans and specifications should be prepared by a licensed engineer following standard engineering practices. Discuss anticipated construction sequence and timing: For projects involving vegetation restoration, provide a vegetation establishment plan that includes information on site preparation, seed mixes and plant materials, seeding/planting plan (attach seeding/planting zone map), planting/seeding methods, vegetation maintenance, and an anticipated schedule of activities: For projects involving construction or vegetation restoration, identify and discuss goals and specific outcomes that can be determined for credit allocation. Provide a proposed credit allocation table tied to outcomes: Provide a five-year monitoring plan to address project outcomes and credit allocation: Discuss and provide evidence of ownership or rights to conduct wetland replacement/mitigation on each site: Quantify all proposed wetland credits and compare to wetland impacts to identify a proposed wetland replacement ratio. Discuss how this replacement ratio is consistent with Corps and WCA requirements: By signature below, the applicant attests to the following (only required if application Involves project-specific/permittee responsible replacement): • All proposed replacement wetlands were not: • Previously restored or created under a prior approved replacement plan or permit • Drained or filled under an exemption during the previous 30 years • Restored with financial assistance from public conservation programs • Restored using private funds, other than landowner funds, unless the funds 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. • 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 will be provided to guarantee successful completion of the wetland 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 submit proof of such recording to the LGU and the Corps. Applicant or Representative: Title: Signature: Date: Minnesota Interagency Water Resource Application Form February 2014 Page 11 of 13 Appendix A — Figures e awa•A. •. 1 1 I . i iACY ]A �4siAwa f ^ ✓�� <� + e snm.em rwa n: i I '�ro•... s w• • • • • ? E..nen r__ 5 � IE ; c 1 ] •'°°G Dao � vw,J • M aed o. c `a$ c� Yana v eo^•`e6 ClY —_ i Jlai� • ,• � 1 ; • I• Y w.a I 1 —_.'� w.a° `f - Yawn � wn , Ia•aR t PfpRA. i .. _! = .0 r,, s inn i , �Rp1o1•°1 fi n 9 w••. ..• S 4b:W 1 .0 'romaa 9 ; •d mige ]i w»w sl ur,. In � ]ILnu1 Crv, 1 I t'M; V 8 w � oww P ••� I 2 a Y, � } 2 X of �.,aw6 S Ile MOO • . onwR I `P I 1 ' —J _ _ LW,M rtes: Esri, DeL rme„NAVTEQ, MN, Wermap, iPC, NRCAN, Esri Japan, --T71ETI, Esri China (Hong Kong), Esri (Thailand , TomTom, 2013 Figure 1. Project Locations -• A Lake Minnewashta Regional Park O Project Limits �I City Limits WSQ ,, "„; Chanhassen, Minnesota Lake Minnewashta finch =2,000 feet Jf _� 1 . • i1 29• \v --_— �.� .�-. f:roo Excelsior .,; e 1s10 q �1 �<1 I li�� P� •�+ ,1. r. '�� ,1. _ sN a �,•. a•r• — t 1LI�._ �••. ♦-"D you _ .glb� .' , •t . ,, o •• . ; . "982 ... T x•23 .{ t Part'Crgilp/r. al I SHORWOOD iii 1,2 L J A.•-�_—• r}} _ 1 ��� . Lp y o, a P.•aa. C ��� S Sid 1Y ��f//j ��-.I 1 /�/��•�7y'�,�\' is , i� �•aORM �TTT'- (7 i19. C tw �, - - �•� _v -3; i hf©ographic S �F Cop r20 tLNational Geciety, ic4uhed Figure 1a. USGS Mapes Lake Minnewashta Regional Park QPmject Limits [_I City Limits WSB 'AxRrM Chanhassen Minnesota _ �! Lake Minnewashta cinch=2,000 feet cYxr1 l .- LL m Q. LL w Q. Q =o ca Q a J LU LU CL M, cQ C LU CL C: J 4l� CL Q w CL LL LU ilivilz U LU "\. ✓ a LL Co CL � a a LU - a z :v U —a OLU f .V- o a C 0 o + a � o m m o 3 Y i �- a o y a ya a s m 1® Ix KKD®D2 TB HIM °i!t➢, rI !t. KU) (/ K I 1 MP KC \ ; HM KB KU2 'A.•. tri MP' MK K•2 Figure 3. Carver County Soil Survey Lake Minnewashta Regional Park Chanhassen, Minnesota cnn � n K` "-" 4 Minn washta RF i na Park d. r° � Lr•r °Std A TC V' ,. ♦ ! tKD2 m' K8 i` Kf>[B .kB2 TS !' j '• Carver County Sod Survey _ argoci r�miis Non-Hydn< t A WSB 1 Inch - 500 feet %w aq l•. MpSYBIN eM,GI'JIKMNIP'M-Wd��^sP _A °i a In � � n [ .eMy a in e -m d _ oA N • Y 1 �- W m �t4 I.li ��. �lP � •' L r ,; `:. t; �j\•�� .6'. •:� fit. .,•I -. '� aE Ir Aw mo L c6 W m m "' y a N N N N N `7 N NO J I a � • R� t c ' d Y f�0 �a c W o 0 0 Ln J m C ice'. ..t• �-'�.�,,' � C L C •, lO c c�3c C N C !n d � L mY t LL J U m N d Of LL N 0 a` A N e d �, r= �s U 'a r V Zry V V ®j! L VlOS3NNIW 'A1Nf1OO kBAHV: 103roae IN3W3AONdWI NNVd VLOZ AM WN0193H VIHSVM3NNIW 3Ntl 0 TII Fa 3� ViOS9NNIW'AlNno5uamm - 103rONd 1N3W3AONdWI NNVd KOZ ® — NNVd IVNOI03M tl1H5VM3NNIW 3Mtll w^, OJV n 1, j A I A I 1 e '1 I, 1 I1 1 1 1 I 1 n , 1 , 1 1 1 ` fR 1 VlOS3NNIW 'A1Nf100 i13AIIVO .-•.•.-a-•= n3rON4 1N3W3AOHdWi NtlVd O LUL _ AbVd IVN0103N V1HSVM3NNIW 3MV OS -/II ^ � k w ae r vo Y �G i Cal t VlOS3NNIW'AlNf10O N3ANVO 193rOMd 1N3W3AONdNl MHVd Wt MNVA IVN0103N VIHSVM3NNIN 3Mtl -� p ^��'^ OV i Cal t " VIOS3NNIW'AlNll0O il3AHVD 103rOHd1N3W3A0adMl MaVd O W n�i fi MNVd 1VN0103N VIHSVA\3NNIW 3N" mow^ - nl 1 s — SI I • I \ � I LL LL \ mg u w 0 Fw Y / W� VIOS3NNIW 103tONd 1N3W3AONdW1 NHVd VLOZ I .� A MNVd WN0103M WINSVM3NNIW 3MV o�n 2 6.6 1 I 1 I c J/• Appendix B — Plan set Appendix C — NPDES Permit 00.00p, Minnesota Pollution Control Agency Coverage Card Construction Stormwater National Pollutant Discharge Elimination System/State Disposal System General Permit MNR100001 The Construction site identified below is covered under the National Pollutant Discharge Elimination System/State Disposal System General Permit MNR100001 and is authorized by the Minnesota Pollution Control Agency (MPGA) to discharge stormwater associated with construction activities. Permit ID Number: Owner: General Contractor: C00038580 Carver County Carver County Project Name: Lake Minnewashta Regional Park Improveme CSW Permit Coverage Date: 7/17/2014 If you have questions regarding the stormwater program for construction activity, please access the MPCA Stormwater website at http:www pca state mn.us/stormwater, or call the Construction Stormwater Program at 651-757-2119 or toll free at 800-657-3804. Appendix D — Supporting Stormwater Management Analysis I.: VIOS3NNIW 'AINOOO u3Amv3 .~A• --w 103fONd 1N3M3AOYdMl N Vd KU NWVd lVNOIV3 V1HSVM3NNIN 3NVl <� I mo 111 1 I @ I I I Jill �m I 11 Ir n � II j{III I ��' ���• W / g Q F / � <ss � L a ' J O d 1 LLJ uj 2 uj w U / iL] � � = w I� W �\ rp x cr_ �.e m a< - e m``v .• Ut~RcOD z E m m 2} F m O a W H W O _ (w 2 W U U O r ZZ U J 0 Q Y m D 0 10.5 �PREFP Ea�AiJ�Noai4tltanuonvecnE - r% 1t1R b MinrewayNa `�� �- - O Existing Boat "uno CONCRETE PAD FOR PORTABLE RESTROOMS . 8 VEHICLE STALLS UNCH WITH / ADING DOCK 4P 5S / RECYCLING BS COMPOST /TRASH f -1 BIN AREA - BD' X 1T 35 VEHICLE / TRAILER I TIE DOWN' AREA STALLS iN� Subcat Reach on Link Routing Diagram for Boat Landing �� Prepared by HP, Printed 7/7/2014 Boat Landing Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area acres) CN Description (su bcatch ment-n umbers) 1.276 98 (3S, 5S, 6S, 8S) 1.421 61 (3S, 5S, 6S, 10S) 1.297 61 >75% Grass cover, Good, HSG B (9S) 0.800 85 existing north parking lot (9S) 0.600 85 existing south parking lot (9S) 5.394 76 TOTAL AREA Boat Landing Type // 24 -hr lyr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HvdroCAD Software Solutions LLC Pace 3 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment3S: Runoff Area=0.396 ac 94.44% Impervious Runoff Depth>1.84" Tc=10.0 min CN=96 Runoff --1.10 cfs 0.061 of Subcatchment5S: Runoff Area=1.030 ac 69.90% Impervious Runoff Depth>1.13" Tc=10.0 min CN=87 Runoff --1.92 cfs 0.097 of Subcatchment6S: Runoff Area=0.309 ac 6.47% Impervious Runoff Depth>0.18" Tc=10.0 min CN=63 Runoff=0.05 cfs 0.005 of Subcatchment8S: Runoff Area=0.162 ac 100.00% Impervious Runoff Depth>2.02" Tc=10.0 min CN=98 Runoff=0.47 cfs 0.027 of Subcatchment9S: Existing Boat Launch Runoff Area=2.697 ac 0.00% Impervious Runoff Depth>0.45" Tc=10.0 min CN=73 Runoff=1.88 cfs 0.102 of Subcatchmentl OS: north boat launch - Runoff Area=0.800 ac 0.00% Impervious Runoff Depth>0.14" Tc=10.0 min CN=61 Runoff=0.07 cfs 0.009 of Reach 8R: Swale Avg. Flow Depth=0.07' Max Vel=2.05 fps Inflow=0.49 cfs 0.024 of n=0.030 L=230.0' S=0.0674'/' Capacity=306.66 cfs Outflow=0.42 cfs 0.024 of Reach 1 OR: to Minnewashta PROPOSED Inflow=1.03 cfs 0.119 of Outflow=1.03 cfs 0.119 of Pond 1P: Rain Garden Peak Elev=965.11' Storage=0.033 of Inflow=1.10 cfs 0.061 of Discarded=0.01 cfs 0.006 of Primary=0.49 cfs 0.024 of Outflow=0.50 cfs 0.030 of Pond 2P: Rain Garden wl Yard Drain Peak Elev=949.69' Storage=0.014 of Inflow=1.92 cfs 0.121 of Discarded=0.00 cfs 0.003 of Primary=1.89 cfs 0.106 of Secondary=0.00 cfs 0.000 of Outflow=1.90 cfs 0.109 of Pond 4P: Stormwater Basin Peak Elev=946.51' Storage=0.060 of Inflow=1.94 cfs 0.110 of Primary=0.98 cfs 0.106 of Secondary=0.00 cfs 0.000 of Outflow=0.98 cfs 0.106 of Pond 7P: Peak Elev=952.51' Storage=0.017 of Inflow=0.47 cfs 0.027 of Discarded=0.01 cfs 0.006 of Primary=0.05 cfs 0.004 of Outflow=0.06 cfs 0.010 of Total Runoff Area = 5.394 ac Runoff Volume = 0.300 of Average Runoff Depth = 0.67" 76.34% Pervious = 4.118 ac 23.66% Impervious= 1.276 ac Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 4 Summary for Subcatchment 3S: Runoff = 1.10 cfs @ 12.01 hrs, Volume= 0.061 af, Depth> 1.84" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1yr Rainfall=2.40" Area (ac) CN Descriotion 0.374 98 " 0.022 61 0.396 96 Weighted Average 0.022 5.56% Pervious Area 0.374 94.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3S: Hydrograph — RunoH Type II 24 -hr 1yr Rainfall=2.40" Runoff Area=0.396 ac I 1i Runoff Volume=0.061 of 11 Runoff Depth>1.84" Tc=10.0 min 1 I I CN=96 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 1124 -hr 1yrRainfa11=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 5S: Runoff = 1.92 cfs @ 12.02 hrs, Volume= 0.097 af, Depth> 1.13" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1yr Rainfall=2.40" Area (ac) CN Description 0.720 98 0.310 61 1.030 87 Weighted Average 0.310 30.10% Pervious Area 0.720 69.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, LL Subcatchment 5S: Hydrograph 2 1.92 cfs Type II 24 -hr 1yr Rainfall=2.40" Runoff Area=1.030 ac Runoff Volume=0.097 of Runoff Depth>1.13" Tc=10.0 min CN=87 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) —Runoff Boat Landing Type 11 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 6S: Runoff = 0.05 cfs @ 12.07 hrs, Volume= 0.005 af, Depth> 0.18" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 y Rainfall=2.40" Area (ac) CN Description 0.020 98 • n non c, 0.309 63 Weighted Average 0.289 93.53% Pervious Area 0.020 6.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 6S: Hydrograph — RunoH 0.045 Type II 24 -hr 0.04 lyr Rainfall=2.40" Runoff Area=0.309 ac 0.035 Runoff Volume=0.005 of 0.03- 3 Runoff Depth>0.18" io 0.025 Tc=10.0 min ° 02 CN=63 0.015 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 11 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HVdroCAD Software Solutions LLC Paae 7 Summary for Subcatchment 8S: Runoff = 0.47 cfs @ 12.01 hrs, Volume= 0.027 af, Depth> 2.02" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 y Rainfall=2.40" Area (ac) CN Description 0.162 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 8S: Hydrograph — RunoH 0" Type II 24 -hr 0.42 0.4 1yr Rainfall=2.40" 0.38 0.36 0.34 Runoff Area=0.162 ac 0.32 'm 0.3 Runoff Volume=0.027 of `. 0.29 0.26 Runoff Depth>2.02" LL 0.24 0.22 Tc=10.0 min 0.2 0.18 0.16 CN=98 0.14 0.12 0.1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 1124 -hr lyrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Paae 8 Summary for Subcatchment 9S: Existing Boat Launch Runoff = 1.88 cfs @ 12.04 hrs, Volume= 0.102 af, Depth> 0.45' Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type 1124 -hr 1 yr Rainfall=2.40" Area (ac) CN Description ' 0.600 85 existing south parking lot 1.297 61 >75% Grass cover, Good, HSG B 0.800 85 existing north parking lot 2.697 73 Weighted Average 2.697 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 9S: Existing Boat Launch Hydrograph 2 1.88 cfs Type II 24 -hr 1yr Rainfall=2.40" Runoff Area=2.697 ac Runoff Volume=0.102 of Runoff Depth>0.45" Tc=10.0 min CN=73 o- 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) —Runoff Boat Landing Type 11 24 -hr 1yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment 10S: north boat launch - gravel removed Runoff = 0.07 cfs @ 12.08 hrs, Volume= 0.009 af, Depth> 0.14" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr lyr Rainfall=2.40" Area (ac) CN Description ' 0.800 61 0.800 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 10S: north boat launch - gravel removed Hydrograph 9.065 Type II 24 -hr 0.06 1yr Rainfall=2.40" 0.955 Runoff Area=0.800 ac 0.05 0.045 Runoff Volume=0.009 of 0.04 Runoff Depth>0.14" LL 0.935 Tc=10.0 min 9.03 I CN=61 0.01 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Time (hours) — Runoff Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydrOCADO 10.00 s/n 00883 © 2012 HydrOCAD Software Solutions LLC Page 10 Summary for Reach 8R: swale Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 0.72" for tyr event Inflow = 0.49 cfs @ 12.16 hrs, Volume= 0.024 of Outflow = 0.42 cfs @ 12.23 hrs, Volume= 0.024 af, Atten= 15%, Lag= 4.3 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 2.05 fps, Min. Travel Time= 1.9 min Avg. Velocity = 0.98 fps, Avg. Travel Time= 3.9 min Peak Storage= 51 cf @ 12.20 hrs Average Depth at Peak Storage= 0.07' Bank -Full Depth= 2.00' Flow Area= 22.0 sf, Capacity= 306.66 cfs 3.00' x 2.00' deep channel, n= 0.030 Side Slope Z -value= 4.0T Top Width= 19.00' Length= 230.0' Slope= 0.0674T Inlet Invert= 965.50', Outlet Invert= 950.00' Reach 8R: swale Hydrograph 0.45 042 ds Inflow Area=0.396 ac 0.4 Avg. Flow Depth=0.07' 0.35 Max Vel=2.05 fps 0.3 n=0.030 0.25 L=230.0' LL 0.2 S=0.0674'/' 0.15 Capacity=306.66 cfs EE 5 6 7 8 9 10 11 12 13 14 15 16 17 Time (hours) InFlow Outflow Boat Landing Type // 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 11 Summary for Reach 1OR: to Minnewashta PROPOSED Inflow Area = 2.697 ac, 47.31 % Impervious, Inflow Depth > 0.53" for 1 yr event Inflow = 1.03 cfs @ 12.20 hrs, Volume= 0.119 of Outflow = 1.03 cfs @ 12.20 hrs, Volume= 0.119 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach 10R: to Minnewashta PROPOSED Hydrograph Inflow outflow Inflow Area=2.697 ac I. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2 Time (hours) Boat Landing Type 1124 -hr fyrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HVdroCAD Software Solutions LLC Page 12 Summary for Pond 1P: Rain Garden Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 1.84" for 1 yr event Inflow = 1.10 cfs @ 12.01 hrs, Volume= 0.061 of Outflow = 0.50 cfs @ 12.16 hrs, Volume= 0.030 af, Atten= 54%, Lag= 9.2 min Discarded = 0.01 cfs @ 12.16 hrs, Volume= 0.006 of Primary = 0.49 cfs @ 12.16 hrs, Volume= 0.024 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 965.11' @ 12.16 hrs Surf.Area= 0.023 ac Storage= 0.033 of Plug -Flow detention time= 160.7 min calculated for 0.030 of (50% of inflow) Center -of -Mass det. time= 77.2 min ( 828.3 - 751.1 ) Volume Invert Avail.Storage Storage Description #1 963.00' 0.059 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 963.00 0.009 0.000 0.000 964.00 0.015 0.012 0.012 965.00 0.022 0.018 0.030 966.00 0.035 0.028 0.059 Device Routing Invert Outlet Devices #1 Primary 965.00' 5.0' long x 2.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2 Discarded 963.00' 0.300 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.16 hrs HW=965.11' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.46 cfs @ 12.16 hrs HW=965.11' (Free Discharge) t1=Broad-Crested Rectangular Weir(Weir Controls 0.46 cfs @ 0.84 fps) Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD® 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 13 H V LL Pond 1P: Rain Garden Hydrograph Time (hours) — Inflow — Outflow — Discarded — Primary Boat Landing Type 1124 -hr lyrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 14 Summary for Pond 2P: Rain Garden wl Yard Drain Inflow Area = 1.426 ac, 76.72% Impervious, Inflow Depth > 1.02" for 1yr event Inflow = 1.92 cfs @ 12.02 hrs, Volume= 0.121 of Outflow = 1.90 cfs @ 12.03 hrs, Volume= 0.109 af, Atten= 1%, Lag= 0.8 min Discarded = 0.00 cfs @ 12.03 hrs, Volume= 0.003 of Primary = 1.89 cfs @ 12.03 hrs, Volume= 0.106 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 949.69' @ 12.03 hrs Surf.Area= 0.014 ac Storage= 0.014 of Plug -Flow detention time= 47.0 min calculated for 0.109 of (90% of inflow) Center -of -Mass det. time= 14.1 min ( 811.6 - 797.5 ) Volume Invert Avail.Storage Storage Description #1 948.00' 0.039 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 948.00 0.004 0.000 0.000 949.00 0.009 0.006 0.006 950.00 0.016 0.012 0.019 951.00 0.024 0.020 0.039 Device Routing Invert Outlet Devices #1 Primary 946.00' 15.0" Round Culvert L= 71.0' Ke= 0.500 Inlet / Outlet Invert= 946.00'/ 945.00' S= 0.0141 'P Cc= 0.900 n= 0.014, Flow Area= 1.23 sf #2 Secondary 950.30' 20.0' long x 20.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #3 Device 1 949.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Discarded 948.00' 0.300 in/hr Exfltration over Surface area iscarded OutFlow Max=0.00 cfs @ 12.03 hrs HW=949.69' (Free Discharge) =Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow, Max=1.84 cfs @ 12.03 hrs HW=949.69' (Free Discharge) t 1=Culvert (Passes 1.84 cfs of 9.87 cfs potential flow) 3=Orifice/Grate (Weir Controls 1.84 cfs @ 1.41 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=948.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type lI 24 -hr lyr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydrOCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 15 Pond 2P: Rain Garden wl Yard Drain Hydrograph Storage=0.014 of 7 8 9 10 11 12 13 14 Time (hours) — Inflow — Outflow Inflow Area=1.426 ac — Discarded -Secondary Peak Elev=949.69' Storage=0.014 of 7 8 9 10 11 12 13 14 Time (hours) Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD@ 10.00 s/n 00883 @ 2012 HVdroCAD Software Solutions LLC Page 16 Summary for Pond 4P: Stormwater Basin Inflow Area = 1.735 ac, 64.21 % Impervious, Inflow Depth > 0.76" for 1yr event Inflow = 1.94 cfs @ 12.03 hrs, Volume= 0.110 of Outflow = 0.98 cfs @ 12.22 hrs, Volume= 0.106 af, Atten= 49%, Lag= 11.1 min Primary = 0.98 cfs @ 12.22 hrs, Volume= 0.106 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 946.00' Surf.Area= 0.045 ac Storage= 0.034 of Peak Elev= 946.51' @ 12.22 hrs Surf.Area= 0.056 ac Storage= 0.060 of (0.026 of above start) Plug -Flow detention time= 143.7 min calculated for 0.072 of (65% of inflow) Center -of -Mass det. time= 21.5 min ( 833.0 - 811.5 ) Volume Invert Avail.Storage Storage Description #1 945.00' 0.245 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 945.00 0.023 0.000 0.000 946.00 0.045 0.034 0.034 947.00 0.066 0.055 0.089 948.00 0.078 0.072 0.161 949.00 0.090 0.084 0.245 Device Routing Invert Outlet Devices #1 Primary 946.00' 12.0" Round Culvert L= 100.0' Ke= 0.500 Inlet/ Outlet Invert= 946.00'/ 945.00' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf #2 Secondary 948.50' 10.0' long x 10.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.98 cfs @ 12.22 hrs HW=946.51' (Free Discharge) t1=Culvert (Inlet Controls 0.98 cfs @ 2.43 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=946.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 17 Pond 4P: Stormwater Basin Hydrograph —Inflow Outflow primary Inflow Area=1.735 ac-Sewndary Peak Elev=946.51' Storage=0.060 of 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type ll 24 -hr lyr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HVdroCAD Software Solutions LLC Page 18 Summary for Pond 7P: Inflow Area = 0.162 ac,100.00% Impervious, Inflow Depth > 2.02" for lyr event Inflow = 0.47 cfs @ 12.01 hrs, Volume= 0.027 of Outflow = 0.06 cfs @ 12.39 hrs, Volume= 0.01Oaf, Atten= 87%, Lag= 23.0 min Discarded = 0.01 cfs @ 12.39 hrs, Volume= 0.006 of Primary = 0.05 cfs @ 12.39 hrs, Volume= 0.004 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 952.51' @ 12.39 hrs Surf.Area= 0.026 ac Storage= 0.017 of Plug -Flow detention time= 219.5 min calculated for 0.010 of (38% of inflow) Center -of -Mass det. time= 111.1 min ( 850.2 - 739.2 ) Volume Invert Avail.Storage Storage Description #1 951.00' 0.089 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 951.00 0.005 0.000 0.000 952.00 0.011 0.008 0.008 953.00 0.040 0.025 0.033 954.00 0.070 0.055 0.089 Device Routing Invert Outlet Devices #1 Primary 952.50' 10.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 951.00' 0.300 in/hr Exfiltration over Surface area 4iscarded OutFlow Max=0.01 cfs @ 12.39 hrs HW=952.51' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.04 cfs @ 12.39 hrs HW=952.51' (Free Discharge) t1=Broad-Crested Rectangular Weir(Weir Controls 0.04 cfs @ 0.27 fps) Boat Landing Type 11 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 19 0.11 0.11 0.1 O.T. 0. Pond 7P: Hydrograph — Inflow Outflow — Discarded Inflow Area=0.162 ac—PdmarY Peak Elev=952.51' Storage=0.017 of 5 6 7 8 9 10 11 12 13 14 15 16 17 Time (hours) Boat Landing Type// 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HvdroCAD Software Solutions LLC Pace 20 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment3S: Runoff Area=0.396 ac 94.44% Impervious Runoff Depth>3.48" Tc=10.0 min CN=96 Runoff=2.01 cfs 0.115 of Subcatchment5S: Runoff Area=1.030 ac 69.90% Impervious Runoff Depth>2.63" Tc=10.0 min CN=87 Runoff=4.31 cfs 0.226 of Subcatchment6S: Runoff Area=0.309 ac 6.47% Impervious Runoff Depth>0.91" Tc=10.0 min CN=63 Runoff=0.45 cfs 0.024 of Subcatchment8S: Runoff Area=0.162 ac 100.00% Impervious Runoff Depth>3.65" Tc=10.0 min CN=98 Runoff=0.84 cfs 0.049 of Subcatchment9S: Existing Boat Launch Runoff Area=2.697 ac 0.00% Impervious Runoff Depth>1.52" Tc=10.0 min CN=73 Runoff=6.79 cfs 0.342 of Subcatchment 10S: north boat launch - Runoff Area=0.800 ac 0.00% Impervious Runoff Depth>0.81" Tc=10.0 min CN=61 Runoff= 1.00 cfs 0.054 of Reach 8R: swale Avg. Flow Depth=0.16' Max Vel=3.35 fps Inflow=1.92 cfs 0.077 of n=0.030 L=230.0' S=0.0674'/' Capacity=306.66 cfs Outflow=1.85 cfs 0.077 of Reach 1 OR: to Minnewashta PROPOSED Inflow=4.85 cfs 0.383 of Outflow=4.85 cfs 0.383 of Pond 1P: Rain Garden Peak EIev=965.28' Storage=0.037 of Inflow=2.01 cfs 0.115 of Discarded=0.01 cfs 0.007 of Primary=1.92 cfs 0.077 of Outflow=1.93 cfs 0.084 of Pond 2P: Rain Garden w/ Yard Drain Peak EIev=949.91' Storage=0.018 of Inflow=5.98 cfs 0.303 of Discarded=0.00 cfs 0.004 of Primary=5.97 cfs 0.287 of Secondary=0.00 cfs 0.000 of Outflow=5.98 cfs 0.291 of Pond 4P: Stormwater Basin Peak EIev=947.37' Storage=0.114 of Inflow=6.42 cfs 0.311 of Primary=3.42 cfs 0.304 of Secondary=0.00 cfs 0.000 of Outflow=3.42 cfs 0.304 of Pond 7P: Peak EIev=952.60' Storage=0.020 of Inflow=0.84 cfs 0.049 of Discarded=0.01 cfs 0.007 of Primary=0.79 cfs 0.025 of Outflow=0.79 cfs 0.032 of Total Runoff Area = 5.394 ac Runoff Volume = 0.809 of Average Runoff Depth = 1.80" 76.34% Pervious = 4.118 ac 23.66% Impervious = 1.276 ac Boat Landing Type 1124 -hr IOyr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Paoe 21 Summary for Subcatchment 3S: Runoff = 2.01 cfs @ 12.01 hrs, Volume= 0.115 af, Depth> 3.48" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN DescriDtion ' 0.374 98 ' 0.022 61 0.396 96 Weighted Average 0.022 5.56% Pervious Area 0.374 94.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3S: Hydrograph 2.01 cfs 2 - Type II 24 -hr 10yr Rainfall=4.20" Runoff Area=0.396 ac Runoff Volume=0.115 of Runoff Depth>3.48" Tc=10.0 min CN=96 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — RunoH Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 22 Summary for Subcatchment 5S: Runoff = 4.31 cfs @ 12.01 hrs, Volume= 0.226 af, Depth> 2.63" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description ' 0.720 98 ' 0.310 61 1.030 87 Weighted Average 0.310 30.10% Pervious Area 0.720 69.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Hydrograph ia�si Type II 24 -hr 10yr Rainfall=4.20" Runoff Area=1.030 ac Runoff Volume=0.226 of rime (hours) Runoff Depth>2.63" Tc=10.0 min CN=87 —Runoff Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 23 Summary for Subcatchment 6S: Runoff = 0.45 cfs @ 12.03 hrs, Volume= 0.024 af, Depth> 0.91" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Descriotion 0.020 98 0.289 61 0.309 63 Weighted Average 0.289 93.53% Pervious Area 0.020 6.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (f /sec) (cfs) 10.0 Direct Entry, Subcatchment 6S: Hydrograph — RunoH 0.42 Type II 24 -hr 0.4 °.36 0.36 10yr Rainfall=4.20" 0.3 0.322 Runoff Area=0.309 ac 03 0.28 Runoff Volume=0.024 of r— 0.26 0.24 Runoff Depth>0.91" M 0.22 0.2 Tc=10.0 min 0.18 0.16 CN=63 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 11 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD@ 10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 24 Summary for Subcatchment 8S: Runoff = 0.84 ds @ 12.01 hrs, Volume= 0.049 af, Depth> 3.65' Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type 1124 -hr 10yr Rainfall=4.20" Area (ac) CN Description 0.162 98 0.162 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (f /ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 8S: Hydrograph 0.8 Type II 24 -hr 0.75 07 10yr Rainfall=4.20" 0.65 0.6 Runoff Area=0.162 ac 'm 0.55 Runoff Volume=0.049 of 0.5 0.45 Runoff Depth>3.65" LL 04 0.35 Tc=10.0 min 0.31 C N=98 0.15 0.1 0.05 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Time (hours) — Runoff Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 25 Summary for Subcatchment 9S: Existing Boat Launch Runoff = 6.79 cfs @ 12.02 hrs, Volume= 0.342 af, Depth> 1.52" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description 0.600 85 existing south parking lot 1.297 61 >75% Grass cover, Good, HSG B 0.800 85 existing north parking lot 2.697 73 Weighted Average 2.697 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 9S: Existing Boat Launch Hydrograph Type II 24 -hr 10yr Rainfall=4.20" Runoff Area=2.697 ac Runoff Volume=0.342 of Runoff Depth>1.52" Tc=10.0 min CN=73 rime (hours) — RunoH Boat Landing Type// 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD® 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 26 Summary for Subcatchment 10S: north boat launch - gravel removed Runoff = 1.00 cfs @ 12.04 hrs, Volume= 0.054 af, Depth> 0.81" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description 0.800 61 0.800 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 10S: north boat launch - gravel removed Hydrograph 1.00 cfs 1 Type II 24 -hr 10yr Rainfall=4.20" Runoff Area=0.800 ac Runoff Volume=0.054 of Runoff Depth>0.81" Tc=10.0 min CN=61 o- 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) — Runoff Boat Landing Type// 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD® 10.00 s/n 00883 0 2012 HydroCAD Software Solutions LLC Page 27 Summary for Reach 8R: swale Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 2.35" for 10yr event Inflow = 1.92 cfs @ 12.04 hrs, Volume= 0.077 of Outflow = 1.85 cfs @ 12.07 hrs, Volume= 0.077 af, Atten= 4%, Lag= 1.9 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 3.35 fps, Min. Travel Time= 1.1 min Avg. Velocity = 1.10 fps, Avg. Travel Time= 3.5 min Peak Storage= 131 cf @ 12.05 hrs Average Depth at Peak Storage= 0.16' Bank -Full Depth= 2.00' Flow Area= 22.0 sf, Capacity= 306.66 cfs 3.00' x 2.00' deep channel, n= 0.030 Side Slope Z -value= 4.0'P Top Width= 19.00' Length= 230.0' Slope= 0.06747' Inlet Invert= 965.50', Outlet Invert= 950.00' F. Reach 8R: swale Hydrograph 2- 1.85 cfs Inflow Area=0.396 ac Avg. Flow Depth=0.16' Max Vel=3.35 fps n=0.030 L=230.0' S=0.0674'/' Capacity=306.66 cfs 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) F--m.-Wil Outflow Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 02012 HydroCAD Software Solutions LLC Page 28 Summary for Reach 10R: to Minnewashta PROPOSED Inflow Area = 2.697 ac, 47.31% Impervious, Inflow Depth > 1.71" for 10yr event Inflow = 4.85 cfs @ 12.08 hrs, Volume= 0.383 of Outflow = 4.85 cfs @ 12.08 hrs, Volume= 0.383 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach 10R: to Minnewashta PROPOSED Hydrograph 5 4.85 cfs Inflow Area=2.697 ac 4- 32O3- 2- 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 21 rime (hours) Inflow — out low Boat Landing Type 1124 -hr 10yrRainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 29 Summary for Pond 1P: Rain Garden Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 3.48" for 10yr event Inflow = 2.01 cfs @ 12.01 hrs, Volume= 0.115 of Outflow = 1.93 cfs @ 12.04 hrs, Volume= 0.084 af, Atten= 4%, Lag= 1.8 min Discarded = 0.01 cfs @ 12.04 hrs, Volume= 0.007 of Primary = 1.92 cfs @ 12.04 hrs, Volume= 0.077 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 965.28' @ 12.04 hrs Surf.Area= 0.026 ac Storage= 0.037 of Plug -Flow detention time= 110.6 min calculated for 0.084 of (73% of inflow) Center -of -Mass det. time= 49.3 min ( 790.5 - 741.2 ) Volume Invert Avail.Storage Storage Description #1 963.00' 0.059 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 963.00 0.009 0.000 0.000 964.00 0.015 0.012 0.012 965.00 0.022 0.018 0.030 966.00 0.035 0.028 0.059 Device Routing Invert Outlet Devices #1 Primary 965.00' S.0' long x 2.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2 Discarded 963.00' 0.300 in/hr Exfiltration over Surface area Drded OutFlow Max=0.01 cfs @ 12.04 hrs HW=965.28' (Free Discharge) tExfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.88 cfs @ 12.04 hrs HW=965.28' (Free Discharge) t1=Broad-Crested Rectangular Weir(Weir Controls 1.88 cfs @ 1.35 fps) Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 30 Pond 1P: Rain Garden Hydrograph Time (hours) — Inflow — Outflow — Discarded — Primary Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 31 Summary for Pond 2P: Rain Garden w/ Yard Drain Inflow Area = 1.426 ac, 76.72% Impervious, Inflow Depth > 2.55" for 10yr event Inflow = 5.98 cfs @ 12.03 hrs, Volume= 0.303 of Outflow = 5.98 cfs @ 12.04 hrs, Volume= 0.291 af, Atten= 0%, Lag= 0.6 min Discarded = 0.00 cfs @ 12.04 hrs, Volume= 0.004 of Primary = 5.97 cfs @ 12.04 hrs, Volume= 0.287 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 949.91' @ 12.04 hrs Surf.Area= 0.015 ac Storage= 0.018 of Plug -Flow detention time= 25.1 min calculated for 0.291 of (96% of inflow) Center -of -Mass det. time= 9.8 min ( 785.8 - 776.0 ) Volume Invert Avail.Storage Storage Description #1 948.00' 0.039 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 948.00 0.004 0.000 0.000 949.00 0.009 0.006 0.006 950.00 0.016 0.012 0.019 951.00 0.024 0.020 0.039 Device Routing Invert Outlet Devices #1 Primary 946.00' 15.0" Round Culvert L= 71.0' Ke= 0.500 Inlet / Outlet Invert= 946.00'/ 945.00' S= 0.0141 T Cc= 0.900 n= 0.014, Flow Area= 1.23 sf #2 Secondary 950.30' 20.0' long x 20.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #3 Device 1 949.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Discarded 948.00' 0.300 in/hr Exfiltration over Surface area iscarded OutFlow Max=0.00 cfs @ 12.04 hrs HW=949.90' (Free Discharge) =Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=5.84 cfs @ 12.04 hrs HW=949.90' (Free Discharge) 't- Culvert (Passes 5.84 cfs of 10.17 cfs potential flow) 3=Orifice/Grate (Weir Controls 5.84 cfs @ 2.07 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=948.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD® 10.00 s/n 00883 0 2012 HydroCAD Software Solutions LLC Page 32 Pond 2P: Rain Garden w/ Yard Drain Hydrograph Storage=0.018 of 5 6 7 8 9 10 11 12 13 14 15 16 17 Time (hours) — Inflow — Outflow Inflow Area=1.426 ac Discarded Primary -S� Peak Elev=949.91' Storage=0.018 of 5 6 7 8 9 10 11 12 13 14 15 16 17 Time (hours) Boat Landing Type// 24-hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 33 Summary for Pond 4P: Stormwater Basin Inflow Area = 1.735 ac, 64.21% Impervious, Inflow Depth > 2.15" for 10yr event Inflow = 6.42 cfs @ 12.04 hrs, Volume= 0.311 of Outflow = 3.42 cfs @ 12.18 hrs, Volume= 0.304 af, Atten= 47%, Lag= 8.4 min Primary = 3.42 cfs @ 12.18 hrs, Volume= 0.304 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 946.00' Surf.Area= 0.045 ac Storage= 0.034 of Peak Elev= 947.37' @ 12.17 hrs Surf.Area= 0.070 ac Storage= 0.114 of (0.080 of above start) Plug-Flow detention time= 68.3 min calculated for 0.270 of (87% of inflow) Center-of-Mass det. time= 16.0 min ( 804.1 - 788.1 ) Volume Invert Avail.Storage Storage Description #1 945.00' 0.245 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 945.00 0.023 0.000 0.000 946.00 0.045 0.034 0.034 947.00 0.066 0.055 0.089 948.00 0.078 0.072 0.161 949.00 0.090 0.084 0.245 Device Routing Invert Outlet Devices #1 Primary 946.00' 12.0" Round Culvert L=100.0' Ke= 0.500 Inlet/ Outlet Invert= 946.00'/945.00' S= 0.0100 'P Cc= 0.900 n= 0.013, Flow Area= 0.79 sf #2 Secondary 948.50' 10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=3.41 cfs @ 12.18 hrs HW=947.36' (Free Discharge) 't-1 =Culvert (Barrel Controls 3.41 cfs @ 4.34 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=946.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 34 Pond 4P: Stormwater Basin Hydrograph — Inflow Outflow — Pnmary Inflow Area=1.735 ac -Secondary Peak Elev=947.37' Storage=0.114 of 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 35 Summary for Pond 7P: Inflow Area = 0.162 ac,100.00% Impervious, Inflow Depth > 3.65" for 10yr event Inflow = 0.84 cfs @ 12.01 hrs, Volume= 0.049 of Outflow = 0.79 cfs @ 12.05 hrs, Volume= 0.032 af, Atten= 5%, Lag= 2.4 min Discarded = 0.01 cfs @ 12.05 hrs, Volume= 0.007 of Primary = 0.79 cfs @ 12.05 hrs, Volume= 0.025 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 952.60' @ 12.05 hrs Surf.Area= 0.029 ac Storage= 0.020 of Plug -Flow detention time= 131.3 min calculated for 0.032 of (65% of inflow) Center -of -Mass det. time= 60.1 min ( 794.1 - 734.0 ) Volume Invert Avail.Storage Storage Description #1 951.00' 0.089 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 951.00 0.005 0.000 0.000 952.00 0.011 0.008 0.008 953.00 0.040 0.025 0.033 954.00 0.070 0.055 0.089 Device Routing Invert Outlet Devices #1 Primary 952.50' 10.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 951.00' 0.300 in/hr Exfiltration over Surface area Qiscarded OutFlow Max=0.01 cfs @ 12.05 hrs HW=952.60' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.77 cfs @ 12.05 hrs HW=952.60' (Free Discharge) t--1 =Broad -Crested Rectangular Weir(Weir Controls 0.77 cfs @ 0.75 fps) Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 36 Pond 7P: Hydrograph Time (hours) Inflow — Outflow Discarded Pnmary Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 37 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment3S: Runoff Area=0.396 ac 94.44% Impervious Runoff Depth>5.12" Tc=10.0 min CN=96 Runoff --2.91 cfs 0.169 of Subcatchment5S: Runoff Area=1.030 ac 69.90% Impervious Runoff Depth>4.23" Tc=10.0 min CN=87 Runoff --6.74 cfs 0.363 of Subcatchment6S: Runoff Area=0.309 ac 6.47% Impervious Runoff Depth>1.97" Tc=10.0 min CN=63 Runoff --1.00 cfs 0.051 ai Subcatchment8S: Runoff Area=0.162 ac 100.00% Impervious Runoff Depth>5.27" Tc=10.0 min CN=98 Runoff --l.21 cfs 0.071 of Subcatchment9S: Existing Boat Launch Runoff Area=2.697 ac 0.00% Impervious Runoff Depth>2.84" Tc=10.0 min CN=73 Runoff --12.62 cfs 0.639 of Subcatchmentl OS: north boat launch - Runoff Area=0.800 ac 0.00% Impervious Runoff Depth>1.81" Tc=10.0 min CN=61 Runoff=2.38 cfs 0.121 of Reach 8R: swale Avg. Flow Depth=0.19' Max Vel=3.79 fps Inflow=2.80 cfs 0.131 of n=0.030 L=230.0' S=0.0674'/' Capacity=306.66 cfs Outflow=2.71 cfs 0.131 of Reach 1OR: to Minnewashta PROPOSED Inflow=7.43 cfs 0.687 of Outflow=7.43 cfs 0.687 of Pond 1 P: Rain Garden Peak Elev=965.36' Storage=0.039 of Inflow=2.91 cfs 0.169 of Discarded=0.01 cfs 0.007 of Primary=2.80 cfs 0.131 of Outflow=2.81 cfs 0.138 of Pond 2P: Rain Garden w/ Yard Drain Peak EIev=950.04' Storage=0.020 of Inflow=9.23 cfs 0.494 of Discarded=0.00 cfs 0.004 of Primary=9.22 cfs 0.477 of Secondary=0.00 cfs 0.000 of Outflow=9.22 cfs 0.482 of Pond 4P: Storrnwater Basin Peak EIev=948.27' Storage=0.183 of Inflow=10.22 cfs 0.528 of Primary=4.41 cfs 0.520 of Secondary=0.00 cfs 0.000 of Outflow=4.41 cfs 0.520 of Pond 7P: Peak EIev=952.63' Storage=0.021 of Inflow=1.21 cfs 0.071 of Discarded=0.01 cfs 0.007 of Primary=1.15 cfs 0.047 of Outflow=1.16 cfs 0.054 of Total Runoff Area = 5.394 ac Runoff Volume = 1.413 of Average Runoff Depth = 3.14" 76.34% Pervious = 4.118 ac 23.66% Impervious = 1.276 ac Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADOO 10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 38 Summary for Subcatchment 3S: Runoff = 2.91 cfs @ 12.01 hrs, Volume= 0.169 af, Depth> 5.12" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description ` 0.374 98 ` 0.022 61 0.396 96 Weighted Average 0.022 5.56% Pervious Area 0.374 94.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 3S: Hydrograph 3 2.91 cfs Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=0.396 ac 2 Runoff Volume=0.169 of Runoff Depth>5.12" Tc=10.0 min CN=96 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) —Runoff Boat Landing Prepared by HP Type 1124 -hr 100yr Rainfall=6.00" Printed 7/7/2014 Summary for Subcatchment 5S: Runoff = 6.74 cfs @ 12.01 hrs, Volume= 0.363 af, Depth> 4.23" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description 0.720 98 ' 0.310 61 1.030 87 Weighted Average 0.310 30.10% Pervious Area 0.720 69.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Hydrograph 7 6.74 cfs 6 Type II 24 -hr 100yr Rainfall=6.00rr 5 Runoff Area=1.030 ac Runoff Volume=0.363 of 4 -Runoff Depth>4.23rr 3 Tc=10.0 min CN=87 2 1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) — RunoH Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 40 Summary for Subcatchment 6S: Runoff = 1.00 cfs @ 12.02 hrs, Volume= 0.051 af, Depth> 1.97' Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description ' 0.020 98 0.289 61 0.309 63 Weighted Average 0.289 93.53% Pervious Area 0.020 6.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (tuft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 6S: Hydrograph 1.00 cfs 1 - Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=0.309 ac Runoff Volume=0.051 of Runoff Depth>1.97" Tc=10.0 min CN=63 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — RunoH Boat Landing Type II 24 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 41 Summary for Subcatchment 8S: Runoff = 1.21 cfs @ 12.01 hrs, Volume= 0.071 af, Depth> 5.27' Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr I00yr Rainfall=6.00" Area (ac) CN Description A 4an no 0.162 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 8S: Hydrograph 1.21 ds Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=0.162 ac Runoff Volume=0.071 of Runoff Depth>5.27" Tc=10.0 min CN=98 0. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) —Runoff Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD® 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 42 Summary for Subcatchment 9S: Existing Boat Launch Runoff = 12.62 cfs @ 12.02 hrs, Volume= 0.639 af, Depth> 2.84" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description 0.600 85 existing south parking lot 1.297 61 >75% Grass cover, Good, HSG B 0.800 85 existing north parking lot 2.697 73 Weighted Average 2.697 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: Existing Boat Launch Hydrograph —Runoff 2 Type II 24 -hr " 100yr Rainfall=6.00" Runoff Area=2.697 ac a Runoff Volume=0.639 of g 7 Runoff Depth>2.84" u 6 Tc=10.0 min 5 CN=73 12 13 14 15 16 17 18 19 20 Time (hour) Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 43 Summary for Subcatchment 10S: north boat launch - gravel removed Runoff = 2.38 cfs @ 12.02 hrs, Volume= 0.121 af, Depth> 1.81" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description 0.800 61 0.800 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 10S: north boat launch - gravel removed Hydrograph 2.38 cfs Type II 24 -hr 2 100yr Rainfall=6.00" Runoff Area=0.800 ac Runoff Volume=0.121 of Runoff Depth>1.81" Tc=10.0 min CN=61 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) — Runoff Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydrOCAD Software Solutions LLC Page 44 Summary for Reach 8R: swale Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 3.97" for 100yr event Inflow = 2.80 cfs @ 12.03 hrs, Volume= 0.131 of Outflow = 2.71 cfs @ 12.06 hrs, Volume= 0.131 af, Atten= 3%, Lag= 1.6 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 3.79 fps, Min. Travel Time= 1.0 min Avg. Velocity = 1.22 fps, Avg. Travel Time= 3.2 min Peak Storage= 169 cf @ 12.05 hrs Average Depth at Peak Storage= 0.19' Bank -Full Depth= 2.00' Flow Area= 22.0 sf, Capacity= 306.66 cfs 3.00' x 2.00' deep channel, n= 0.030 Side Slope Z -value= 4.0'P Top Width= 19.00' Length= 230.0' Slope= 0.06747 Inlet Invert= 965.50', Outlet Invert= 950.00' S R 7 Reach 8R: swale Hydrograph Inflow Area=0.396 ac Avg. Flow Depth=0.19' Max Vel=3.79 fps n=0.030 L=230.0' S=0.0674'/' Capacity=306.66 cfs 12 1A 15 1R 17 1R Time (hours) nflow Outflow Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD@ 10.00 s/n 00883 @ 2012 HydrOCAD Software Solutions LLC Page 45 Summary for Reach 10R: to Minnewashta PROPOSED Inflow Area = 2.697 ac, 47.31 % Impervious, Inflow Depth > 3.06" for 100yr event Inflow = 7.43 cfs @ 12.05 hrs, Volume= 0.687 of Outflow = 7.43 cfs @ 12.05 hrs, Volume= 0.687 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach 10R: to Minnewashta PROPOSED Hydrograph Time (hours) Inflow Outflow Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 46 Summary for Pond 11P: Rain Garden Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 5.12" for 100yr event Inflow = 2.91 cfs @ 12.01 hrs, Volume= 0.169 of Outflow = 2.81 cfs @ 12.03 hrs, Volume= 0.138 af, Atten= 3%, Lag= 1.7 min Discarded = 0.01 cfs @ 12.03 hrs, Volume= 0.007 of Primary = 2.80 cfs @ 12.03 hrs, Volume= 0.131 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 965.36' @ 12.03 hrs Surf.Area= 0.027 ac Storage= 0.039 of Plug -Flow detention time= 95.3 min calculated for 0.138 of (82% of inflow) Center -of -Mass det. time= 43.4 min ( 780.3 - 736.9 ) Volume Invert Avail.Storage Storage Description #1 963.00' 0.059 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store _ (feet) (acres) (acre-feet) (acre-feet) 963.00 0.009 0.000 0.000 964.00 0.015 0.012 0.012 965.00 0.022 0.018 0.030 966.00 0.035 0.028 0.059 Device Routing Invert Outlet Devices #1 Primary 965.00' 5.0' long x 2.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2 Discarded 963.00' 0.300 in/hr Exfiltration over Surface area Qiscarded OutFlow Max=0.01 cfs @ 12.03 hrs HW=965.35' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=2.74 cfs @ 12.03 hrs HW=965.35' (Free Discharge) t1=13road-Crested Rectangular Weir(Weir Controls 2.74 cfs @ 1.54 fps) Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydrOCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 47 Pond 1P: Rain Garden Hydrograph Time (hours) — Inflow — Outflow — Discarded — Primary Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 O 2012 HydroCAD Software Solutions LLC Pace 48 Summary for Pond 2P: Rain Garden w/ Yard Drain Inflow Area = 1.426 ac, 76.72% Impervious, Inflow Depth > 4.16" for 1 00y event Inflow = 9.23 cfs @ 12.02 hrs, Volume= 0.494 of Outflow = 9.22 cfs @ 12.03 hrs, Volume= 0.482 af, Atten= 0%, Lag= 0.6 min Discarded = 0.00 cfs @ 12.03 hrs, Volume= 0.004 of Primary = 9.22 cfs @ 12.03 hrs, Volume= 0.477 of Secondary= 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 950.04' @ 12.03 hrs Surf.Area= 0.016 ac Storage= 0.020 of Plug -Flow detention time= 18.3 min calculated for 0.482 of (98% of inflow) Center -of -Mass det. time= 8.5 min ( 774.1 - 765.6 ) Volume Invert Avail.Storage Storage Description #1 948.00' 0.039 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation SurI.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 948.00 0.004 0.000 0.000 949.00 0.009 0.006 0.006 950.00 0.016 0.012 0.019 951.00 0.024 0.020 0.039 Device Routing Invert Outlet Devices #1 Primary 946.00' 15.0" Round Culvert L= 71.0' Ke= 0.500 Inlet / Outlet Invert= 946.00'/ 945.00' S= 0.0141 T Cc= 0.900 n= 0.014, Flow Area= 1.23 sf #2 Secondary 950.30' 20.0' long x 20.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #3 Device 1 949.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Discarded 948.00' 0.300 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.00 cfs @ 12.03 hrs HW=950.03' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=9.00 cfs @ 12.03 hrs HW=950.03' (Free Discharge) t1=Culvert (Passes 9.00 cfs of 10.36 cfs potential flow) 3=Orifice/Grate (Weir Controls 9.00 cfs @ 2.39 fps) MSecondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=948.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 02012 HydroCAD Software Solutions LLC Page 49 Pond 2P: Rain Garden w/ Yard Drain Hydrograph Inflow Area=1.426 ac Peak Elev=950.04' Storage=0.020 of 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Time (hours) Inflow — Outflow Discarded Pnmary Secondary Boat Landing Type Il 24 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 50 Summary for Pond 4P: Stormwater Basin Inflow Area = 1.735 ac, 64.21 % Impervious, Inflow Depth > 3.65" for 1 00y event Inflow = 10.22 cfs @ 12.03 hrs, Volume= 0.528 of Outflow = 4.41 cfs @ 12.19 hrs, Volume= 0.520 af, Atten= 57%, Lag= 9.5 min Primary = 4.41 cfs @ 12.19 hrs, Volume= 0.520 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 946.00' Surf.Area= 0.045 ac Storage= 0.034 of Peak Elev= 948.27' @ 12.19 hrs Surf.Area= 0.081 ac Storage= 0.183 of (0.149 of above start) Plug -Flow detention time= 54.5 min calculated for 0.484 of (92% of inflow) Center -of -Mass det. time= 17.7 min ( 794.7 - 777.0 ) Volume Invert Avail.Storage Storage Description #1 945.00' 0.245 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 945.00 0.023 0.000 0.000 946.00 0.045 0.034 0.034 947.00 0.066 0.055 0.089 948.00 0.078 0.072 0.161 949.00 0.090 0.084 0.245 Device Routing Invert Outlet Devices #1 Primary 946.00' 12.0" Round Culvert L= 100.0' Ke= 0.500 Inlet/ Outlet Invert= 946.00'/945.00' S= 0.0100 'P Cc= 0.900 n= 0.013, Flow Area= 0.79 sf #2 Secondary 948.50' 10.0' long x 10.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=4.40 cfs @ 12.19 hrs HW=948.27' (Free Discharge) t1=Culvert (Barrel Controls 4.40 cfs @ 5.61 fps) secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=946.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 0 2012 HydroCAD Software Solutions LLC Page 51 Pond 4P: Stormwater Basin Hydrograph 10.22 c(s — Inflow '11 — Outflow 1 6 mary T Inflow Area=1.735 ac =" Secondary Peak Elev=948.27' Storage=0.183 of 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HvdroCAD Software Solutions LLC Page 52 Summary for Pond 7P: Inflow Area = 0.162 ac,100.00% Impervious, Inflow Depth > 5.27" for 100yr event Inflow = 1.21 cfs @ 12.01 hrs, Volume= 0.071 of Outflow = 1.16 cfs @ 12.03 hrs, Volume= 0.054 af, Atten= 4%, Lag= 1.7 min Discarded = 0.01 cfs @ 12.03 hrs, Volume= 0.007 of Primary = 1.15 cfs @ 12.03 hrs, Volume= 0.047 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 952.63' @ 12.03 hrs Surf.Area= 0.029 ac Storage= 0.021 of Plug -Flow detention time= 110.1 min calculated for 0.054 of (76% of inflow) Center -of -Mass det. time= 51.0 min ( 783.0 - 732.1 ) Volume Invert Avail.Storage Storage Description #1 951.00' 0.089 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 951.00 0.005 0.000 0.000 952.00 0.011 0.008 0.008 953.00 0.040 0.025 0.033 954.00 0.070 0.055 0.089 Device Routing Invert Outlet Devices #1 Primary 952.50' 10.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 951.00' 0.300 in/hr Exfiltration over Surface area ?scarded OutFlow Max=0.01 cfs @ 12.03 hrs HW=952.63' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.12 cfs @ 12.03 hrs HW=952.63' (Free Discharge) 't--1 =Broad -Crested Rectangular Weir(Weir Controls 1.12 cfs @ 0.85 fps) Boat Landing Type ,1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydrOCAD Software Solutions LLC Page 53 Pond 7P: Hydrograph Time (hours( — Inflow — Outflow — Discarded — Primary CITY OF CHANHASSEN AFFIDAVIT OF MAILING NOTICE STATE OF MINNESOTA) ) ss. COUNTY OF CARVER ) I, Karen J. Engelhardt, being fust duly sworn, on oath deposes that she is and was on August 7, 2014, 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 Minnewashta Regional Park Wetland Alteration Permit — Planning Case 2014- 23 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 s orn to before me this�day of 2014. Notary Publi JEW! TMEUWISSEN Publvc-Minne 9 e°^'miWcn E�i,es'M^ 37, 2D16 Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, August 19, 2014 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. Chambers, 7700 Market Blvd. Request for a Wetland Alteration Permit in conjunction with Proposal: the Lake Minnewashta Regional Park improvement project on the Lake Minnewashta Regional Park improvement project on 10.37 acres of property zoned Rural Residential RR Applicant: Carver County Property 6900 Hazeltine Boulevard Location: A location map is on the reverse side of this notice. A location map is on the reverse side of this notice. The purpose of this public hearing is to inform you about the The purpose of this public hearing is to inform you about the applicant's request and to obtain input from the neighborhood applicant's request and to obtain input from the neighborhood about this project. During the meeting, the Chair will lead the 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. 2. The applicant will present plans on the project. 3. Comments are received from the public. 3. Comments are received from the public. 4. Public hearing is closed and the Commission discusses 4. Public hearing is closed and the Commission discusses the project. the project. If you want to see the plans before the meeting, please visit If you want to see the plans before the meeting, please visit the City's projects web page at: the City's projects web page at: www.ci.chanhassen.mn.us/2014-23. If you wish to talk to www.ci.chanhassen.mn.us/2014-23. If you wish to talk to someone about this project, please contact Krista Spreiter by someone about this project, please contact Krista Spreiter by email at ksoreiter(DDci.chanhassen.mn.us or by phone at 952 - Questions & 227-1173. If you choose to submit written comments, it is Comments: helpful to have one copy to the department in advance of the helpful to have one copy to the department in advance of the meeting. Staff will provide copies to the Commission. The meeting. Staff will provide copies to the Commission. The staff report for this item will be available online on the staff report for this item will be available online on the project web site listed above the Thursday prior to 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 commercialdndustrial. • 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 healing, 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, please contact the Planning Staff pwson named on the notification. Notice of Public Hearing Chanhassen Planning Commission Meeting Date & Time: Tuesday, August 19, 2014 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 in conjunction with Proposal: the Lake Minnewashta Regional Park improvement project on 10.37 acres of property zoned Rural Residential RR Applicant Carver County Property 6900 Hazeltine Boulevard 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 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/2014-23. If you wish to talk to someone about this project, please contact Krista Spreiter by email at kspreiter(cD.ci.chanhassen.mn.us or by phone at 952 - Questions & 227-1173. 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 razonings and land use amendments from residential to commercialfindustrial. • 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, please contact the Planning Staffperson named on the notification. ABD CONSULTING SERVICES ANTHONY J MILLER BENJAMIN H & HIDEKO GOWEN PO BOX 1F 1543 SPRUCE PT 6440 HAZELTINE BLVD MINNETONKA, MN 55345-0001 VICTORIA, MN 55386-9584 EXCELSIOR, MN 55331-8049 BRADLEY A FERGUSON BRIAN D HARSTAD CHRIS MOSER 863 RAVOUX CIR 6786 HIGHOVER DR 2762 PIPER RIDGE LN CHASKA, MN 55318-2406 CHANHASSEN, MN 55317-7580 EXCELSIOR, MN 55331-7803 CHRISTOPHER C FITCH CORY S ZAFKE DAVID E & KATHLEEN K ON 6814 HIGHOVER DR 7030 HIGHOVER DR 6900 HIGHOVER CHANHASSEN, MN 55317-7568 CHANHASSEN, MN 55317-7572 CHANHASSEN, H ASSEN,R DR CHANHASSEN, MN 55317-7567 DENNIS M & JOAN E CLARK E JEROME CARLSON IND SCHOOL DIST 276 6651 HAZELTINE BLVD PO BOX 554 5621 COUNTY ROAD 101 EXCELSIOR, MN 55331-8039 WAYZATA, MN 55391-0554 MINNETONKA, MN 55345-4214 IVY FAY WILSON JEFFREY MARK ANDERSON JOHN J COPOULS 2742 PIPER RIDGE LN 6840 HAZELTINE BLVD 6810 HIGHOVER DR EXCELSIOR, MN 55331-7803 EXCELSIOR, MN 55331-8030 CHANHASSEN, MN 55317-7568 JOSEPH P THULL KATHLEEN E MACK KRISTOPHER M GRIESE 6872 HIGHOVER DR 6984 HIGHOVER DR 6800 HIGHOVER DR CHANHASSEN, MN 55317-7568 CHANHASSEN, MN 55317-7567 CHANHASSEN, MN 55317-7568 LEE S & RHONDA L BROADSTON MICHAEL MATTHIAS MICHAEL P & TERRI A MASON 6918 HIGHOVER DR 7014 HIGHOVER DR 2711 PIPER RIDGE LN CHANHASSEN, MN 55317-7567 CHANHASSEN, MN 55317-7572 EXCELSIOR, MN 55331-7803 PATRICK J & LISA M MCNULTY PAUL L ASAO PHONG M LUONG 6842 HIGHOVER DR 6934 HIGHOVER DR 6856 HIGHOVER DR CHANHASSEN, MN 55317-7568 CHANHASSEN, MN 55317-7567 CHANHASSEN, MN 55317-7568 PING CHUNG RICHARD E & KIMBERLY TENNYSON RICHARD E & SUSAN K ATWOOD 7000 HIGHOVER DR 2722 PIPER RIDGE LN 2701 PIPER RIDGE LN CHANHASSEN, MN 55317-7572 EXCELSIOR, MN 55331-7803 EXCELSIOR, MN 55331-7803 WADE & THERESA A MOLNAU WILLIAM & BARBARA JOHNSON REV WILLIAM D & MARY D HAWORTH 6888 HIGHOVER DR 7060 CHES MAR DR 6818 HIGHOVER DR CHANHASSEN, MN 55317-7568 EXCELSIOR, MN 55331-8833 CHANHASSEN, MN 55317-7568 CARVER COUNTY PARKS-MARTY WALSH 11360 HWY 212 STE 2 COLOGNE, MN 55322 A WSB & Asnxiarrs. 19x'. engineering - planning- environmental • construction 701 Xenia Avenue South Suite 300 Minneapolis, MN 55416 Tel: 763341-4800 Faii: 763541-1700 Memorandum To: Krista Spreiter, City of Chanhassen Terry Jeffery, City of Chanhassen Melissa Jenny, US Corps of Engineers Copy: Marty Walsh, Carver County Morgan Dawley, WSB & Associates Melissa Jenny, US Corps of Engineers Ben Meyer, BWSR Jennie Skaneke, DNR Brooke Haworth, DNR Mike Wanous, Carver SWCD From: An di Moffatt, WSB & Associates Date: August 26, 2014 Re: Carver County Lake Minnewashta Regional Park Improvements Additional Wedand Impact WSB Project No. 1945-050 Attached, please find a revised wetland impact figure for the Lake Minnewashta Regional Park project. A permit application for wetland impacts was submitted to the City as the LGU and to the US Corps of Engineers on July 22, 2014. While the plans have not changed, we discovered some additional WCA impact above the OHW of Lake Minnewashta associated with the boat launch and storm sewer outfall. This adds 806 sf of additional impact. This area is currently the boat launch area and consists of the sand and gravel area of the launch with some vegetation adjacent to the launch area. Wetland impacts will be mitigated through the purchase of wetland credits via the same wetland bank proposed. If you have any questions or need additional information, please feel free to call me at 763-287-7196. Equal Opportunity Employer wsbeng.mm [.U19i5US0Ad®Avmi14MFAK1 09_611- WtIMO /.pmUmdux p z m J : 0 z my x /ate Y i / a. ♦ I/ III// A Y1 ♦ ~ 1 9 \ \♦ 9e T 9 ' ]] �. Z j 9" / � • � 960 ♦ ,r, rz 1 9P /a � 35a 965 c 9 / e2 6 . 9p s6 961% 6Z 960,I 96, \ 9 m Iry / 965 y / y Z i \� ♦ 966 O 1 L �4,,,•`mm LAKE MINNEWASHTA REGIONAL PARK 3016 PARK IMPROVEMENT PROJECT CARVER COUNTY, MINNESOT Chanhassen Planning Commission —August 19, 2014 5. Inlet protection on all existing catch basins downstream of the disturbance area and adjacent to traffic routing. This includes the catch basin which the system is intended to tie into as well as the four (4) catch basins near the entrance. 6. All turf areas shall have a minimum of 6 inches of topsoil placed prior to seeding or sodding. All voted in favor and the motion carried unanimously with a vote of 7 to 0. PUBLIC HEARING: LAKE MINNEWASHTA REGIONAL PARK: REQUEST FOR A WETLAND ALTERATION PERMIT IN CONJUNCTION WITH THE LAKE MINNEWASHTA REGIONAL PARK IMPROVEMENT PROJECT ON 10.37 ACRES OF PROPERTY ZONED RURAL RESIDENTIAL MR) AND LOCATED AT 6900 HAZELTINE BOULEVARD. APPLICANVOWNER: CARVER COUNTY, PLANNING CASE 2014- 23. Spreiter: Good evening Chairman Aller and commissioners. As stated the Carver County Parks Department has submitted an application for the proposed Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit. I'll be giving a short overview of the project tonight and then we'll go over the proposed impacts and the associated requirements set forth by the Minnesota Wetland Conservation Act and the City's Wetland Alteration Permit and Conditional Use criteria. The project is located entirely within Lake Minnewashta Regional Park located in Chanhassen. The project includes paving the current gravel surface access roads within the park. Expanding one of the existing boat launches and constructing a bypass lane and tum around at the park entrance. The park is currently experiencing unsafe conditions and erosion due to the park's gravel surface access roads. The park also occasionally experiences back up's onto Highway 41 at the park entrance creating unsafe conditions for motorists and users. The goal of the project is to improve safety and accessibility for users as well as to decrease the erosion that is being caused by runoff from the existing gravel roadway surface. The project is expected to begin in September of 2014 with substantial completion by October of 2015. Wetland impacts are proposed for Wetlands G and H shown in orange to accommodate the improvements and expansion of the existing boat launch and resulting trail realignment. Wetland G would be eliminated with the current proposal as it lies entirely within the proposed boat launch area. Proposed wetland impacts to both wetland basins total five hundredths of an acre or approximately 2,000 square feet. Wetland G is located within the proposed boat launch and just south and east of the existing boat launch. It is classified as a type 2 fresh wet meadow wetland and has not been classified under the City's classification system. Wetland H is located just south of the existing boat launch area and is also classified as a type 2 wetland. It is not currently classified under the City's classification system. As previously stated Wetland G would be eliminated as part of the proposed project. The current trail alignment intersects Wetland H and as part of the proposed project this portion of the trail would be removed and the area would be restored to wetland. The trail would be realigned to skirt the southern edge of this wetland resulting in 1,212 square feet of impact. The applicant is not seeking credit for the restored area but would like this effort to be recognized as a minimization measure. The applicant has chosen to meet the watershed district's Wetland Protection Rule. This rule requires that a buffer be provided for all wetlands adjacent to the project area for that part of the wetland edge that is down -gradient from the project. The District's rule is more stringent than the City's Wetland Protection Ordinance which resulted in buffer creation for 5 wetlands. This table looks SCANNED Chanhassen Planning Commission — August 19, 2014 at the watershed district requirements for each wetland buffer that is to be created. And this is Wetland F, one of the wetlands that will receive a buffer as shown in the project plans. These are the plan sets for the turn around and bypass lane, which also show the provided buffers for Wetlands E and A. A series of infiltration basins and a stormwater pond are proposed within the boat launch area to provide water quality treatment for the approximate half of an acre of additional impervious surface that is proposed as a result of the project. The Wetland Conservation Act requires the applicant to list at least two alternatives to the proposed project that would avoid or minimize impacts to wetlands or waters, one of which may be no build or do nothing. The applicant then must list and explain why the option in the application was chosen over these alternatives. The first alternative given was to explore alternate road alignments. The current proposal was chosen over this alternative to avoid wetland impacts to Wetlands B, C, E and F. Initial design of the road at the entrance to the park also resulted in impacts to Wetland A. The design was changed to include a retaining wall in this location to avoid impacts to this wetland. The second alternative was realignment of the proposed boat launch. The current location and alignment of the proposed boat launch was chosen over Alternative 2 to avoid significant impacts to the wooded area north of the parking lot and to avoid completely realigning the road to the south. The applicant also provided impact minimization and avoidance measures as required by the Wetland Conservation Act within the application. These efforts included wetland restoration in conjunction with the trail realignment. Constructing the trail in a way that would minimize wetland impacts due to slope and use for retaining wall adjacent to Wetland A. As a part of the proposed park improvements project the applicant is required to mitigate for any wetland impacts at a 2 to I ratio. The proposed five hundredths of an acre of wetland impact are to be replaced using wetland bank credits purchased from account number 1375. This wetland bank is in the same bank service area and major watershed as the proposed project. As the applicant has sufficiently met the sequencing requirements for the Wetland Conservation Act and made adequate efforts to minimize impacts where possible, staff is recommending approval of the Lake Minnewashta Regional Park Improvements Project Wetland Alteration Permit and adoption of the Findings of Fact and Recommendation. That is all for my presentation tonight and I would be happy to take any questions at this time. Aller: So I just want to clarify, in reading this tremendous report which is about 50 pages. Again you can find it on the website. I get the idea that we're trading off some hard cover, some repair and then we're going to get less impairment ultimately in our water system. Spreiter: Yes that is one of the benefits is the reduction in erosion due to the replacement of the gravel surface with the paved surface. Campion: What is done with the existing launch site because it's moved over right from the new one? Spreiter: Well it's, for the most part it will be placed over the existing as well as expanded. So I don't think that there is anything, any kind of remediation or major remediation that needs to be done with the old launch. That's my understanding. Campion: Okay. Weick: Can you clarify just the idea of the credits and how that works. I just don't understand. i Chanhassen Planning Commission —August 19, 2014 Spreiter: Sure. So the requirement is that they have to mitigate for the size of the wetland that is impacted or the area of the wetland that is impacted at a 2 to 1 ratio and they can do that in a couple of ways. One is mitigation by creating a wetland on site. More often what applicants do is they buy credits or buy acreage basically from a bank site which is a wetland that has been created or preserved for that purpose. Weick: Okay. Aller: And in this case the bank is in the same location. Spreiter: Yeah, so one of the mitigation requirements to get that 2 to 1 ratio because otherwise they may have to mitigate more is that that wetland bank that they buy from has to be in the same bank service area and major watershed. Aller: And as a result of the motion we're actually increasing our buffers around. Spreiter: Correct. Aller: The water correct Spreiter: Yep, yep. The existing buffers. There already is some buffers within the park but they will be enhanced and expanded as a part of this project. And then there is that, even though they're not seeking credit for it, there is that restoration that will happen. I think that is over 600 square feet. Aller: Anything? Anything else? Alright. Yusuf: Looks like a nice improvement. Aller: I'm going to open up the public hearing portion of the meeting. Anyone wishing to come forward to speak either for or against the item can do so at this time. Have any questions? Alright. We'll close the public hearing. Again it's open for discussion or comment. Hokkanen: I have to say it's a nice improvement for the area. If you've ever gone down there. Aller: There'll be some great trade-offs. I'll entertain a motion. Hokkanen: Okay, it's a wordy one. Spreiter: I apologize. Hokkanen: The Chanhassen Planning Commission recommends that the City Council approve Wetland Alteration Permit #2014-23 and WCA Permit #2014-03 to impact .05 acres of wetland and the wetland replacement plan under the Minnesota Rules Chapter 8420 which utilizes the purchase of .1 acres of wetland credit from bank # 13 75 for the purpose of the proposed Lake Minnewashta Regional Park Improvements Project and authorize the Water Resources Coordinator to sign the joint water resource application for approval of wetland replacement as Chanhassen Planning Commission — August 19, 2014 shown in plans dated July 22, 2014, subject to the conditions within the staff report and the adoption of the attached Findings of Fact and Recommendation. Aller: Thank you. I have a motion. Do I have a second? Tennyson: I'll second. Aller: Having a motion by Commissioner Hokkanen and a second by Commissioner Tennyson. Any further discussion? Hokkanen moved, Tennyson seconded that the Chanhassen Planning Commission recommends that the City Council approve Wetland Alteration Permit #2014-23 and WCA Permit #2014-03 to impact .05 acres of wetland and the wetland replacement plan under the Minnesota Rules Chapter 8420 which utilizes the purchase of. 1 acres of wetland credit from bank #1375 for the purpose of the proposed Lake Minnewashta Regional Park Improvements Project; and authorize the Water Resources Coordinator to sign the joint water resource application for approval of wetland replacement as shown in plans dated July 22, 2014, subject to the following conditions and adoption of the attached Findings of Fact and Recommendation: 1. Wetland replacement shall occur in a manner consistent with the Minnesota Wetland Conservation Act (MR 8420). The applicant shall receive the City's approval of a wetland replacement plan prior to any wetland impact occurring. 2. Wetland buffer areas shall be preserved, maintained and/or created around all existing wetlands in compliance with Sections 20-401 — 20-421 of Chanhassen City Code. 3. The applicant shall apply for and obtain permits from the appropriate regulatory agencies, e.g. Minnesota Pollution Control Agency, Minnesota Department of Natural Resources, Minnesota Department of Transportation, Minnesota Board of Soil and Water Resources and Army Corps of Engineers and comply with their conditions of approval. 4. The applicant must submit a Bill of Sale for Wetland Banking Credits to the Minnesota Board of Water and Soil Resources signed by both the buyer and seller of designated wetland credits. 5. The applicant must obtain, and the City must have received copy of an Application for Withdrawal of Wetland Credits from the Minnesota Wetland Bank signed and approved by the Minnesota Board of Water and Soil Resources prior to any impacts. 6. A signed Landowner Statement and Contractor Responsibility form shall be provided to the City prior to commencement of activity. All voted in favor and the motion carried unanimously with a vote of 7 to 0. lh; ,4-a3 CITY OF CHANHASSEN CARVER COUNTY, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: The application of the Carver County Parks Department for a Wetland Alteration Permit for wetland replacement for proposed impacts to two wetlands, totaling .05 acres, as a part of the proposed Lake Minnewashta Regional Park Improvements Project — Planning Case 2014-23. On August 19, 2014, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of Carver County for a wetland alteration pen -nit to impact two wetlands. The total area proposed to be impacted is .05 acres. The Planning Commission conducted a public hearing on the wetland alteration permit which was preceded by published notice. The Planning Commission heard testimony from all interested persons wishing to speak and now makes the following: FINDINGS OF FACT 1. The property is currently zoned Rural Residential (RR). 2. The property is guided in the Land Use Plan for Parks and Open Space. 3. The proposed project is located within the within Lake Minnewashta Regional Park, 6900 Hazeltine Boulevard, Section 4, T116 N, R23W, within the city of Chanhassen. 4. City code directs that a wetland alteration permit shall not be issued without having been first reviewed by the Planning Commission and approved by the City Council following the review and hearing procedures set forth for conditional use permits and the additional requirement of Minnesota Rules Chapter 8420.0230. Wetland Alteration and Conditional Use Criteria: The Planning Commission shall recommend a Wetland Alteration Permit and the Council shall issue such Wetland Alteration Permit only if it fords that: a. The proposed project will not be detrimental to or endanger the public health, safety, comfort, convenience or general welfare of the neighborhood or the city. FINDING: The proposed wetland impacts that will occur with the Lake Minnewashta Regional Park Improvements Project have not been found to pose danger to public health, safety, comfort, convenience or general welfare. The goal of the proposed project is to improve the amenities of the park for residents and recreationalists. SCANNED b. The proposed project will be consistent with the objectives of the City's Comprehensive Plan and the Zoning chapter of the City Code. FINDING: The proposal is consistent with the objectives of the City's Comprehensive Plan and City Code. It complies with all City, State and Federal requirements. The boat launch improvements, road improvements, and trail construction will improve safety and ease congestion within the park and where the park entrance intersects with T.H. 41. c. The proposed project will be designed, constructed, operated and maintained so to be compatible in appearance with the existing or intended character of the general vicinity and will not change the essential character of that area. FINDING: The appearance and character of the general vicinity will not change. The applicant has made a reasonable effort to minimize impacts to wetlands by using the best road and trail alignment to avoid impacts, as well as use of a retaining wall near Wetland A. The present and future zoning of the parcel will not change. It will remain compatible with and enhance the existing and intended character, use, and appearance of the area. d. The proposed project will not be hazardous or disturbing to existing or planned neighboring uses. FINDING: The surrounding uses are zoned for Residential Medium -Density, Residential Large -Lot, and Residential Low -Density. The wetland impacts proposed as a result of the project are not foreseen to cause hazards or disturbance to existing or planned neighboring uses. The proposed project is considered an enhancement to neighboring uses, as well as providing increased safety for residents and users. e. The proposed project will be served adequately by essential public facilities and services, including streets, police and fire protection, drainage structures, refuse disposal, water and sewer systems and schools; or will be served adequately by such facilities and services provided by the persons or agencies responsible for the establishment of the proposed use. FINDING: Any changes to drainage structures or additional drainage structures needed as a result of the proposed wetland impacts will be designed and constructed by the applicant's contracted consultant in compliance with City design standards. Proposed roadways and trails will be maintained by Carver County, and will be constructed entirely on regional park property. f. The proposed project will not create excessive requirements for public facilities and services and will not be detrimental to the economic welfare of the community. FINDING: The proposed wetland impacts associated with the Lake Minnewashta Regional Park Improvements Project will not create excessive need for public facilities and services. The park improvements project does not require additional services required by the City. In addition, the proposed roadway improvements, trail improvements, and boat launch improvements are foreseen as an enhancement to economic community welfare, by providing safety improvements and accessibility for residents and recreationalists. g. The proposed project will not involve uses, activities, processes, materials, equipment and conditions of operation that will be detrimental to any persons, property or the general welfare because of excessive production of traffic, noise, smoke, fumes, glare, odors, rodents, or trash. FINDING: The proposed wetland alterations are not expected to be detrimental to any persons, property or the general welfare. h. The proposed project will have vehicular approaches to the property which do not create traffic congestion or interfere with traffic or surrounding public thoroughfares. FINDING: The proposed wetland impacts will not create nor interfere with traffic and surrounding public thoroughfares. When completed, the proposed entrance and roadway improvements will result in eased congestion and will provide safer conditions for both pedestrian and vehicular traffic. i. The proposed project will not result in the destruction, loss or damage of solar access, natural, scenic or historic features of major significance. FINDING: The proposed wetland impacts associated with the project will have no impact on solar access, natural, scenic or historic features of major significance. j. The proposed project will be aesthetically compatible with the area. FINDING: The applicant has made a reasonable effort to minimize wetland impacts and retain aesthetical compatibility within the area. In addition, the proposed park improvements project will complement the area. k. The proposed project will not depreciate surrounding property values. FINDING: The proposed wetland impacts have been minimized to the greatest extent feasible, while still allowing for the park improvements project to occur. The proposed park improvements project will provide safety, greater access, and will be an asset to the surrounding properties. 1. The proposed project will meet standards prescribed for certain uses as provided in the City Code. 20-410 (b) When a permit is issued allowing wetland alteration, the following standards shall be followed: (1) The alteration will not have a net adverse effect on the ecological and hydrological characteristics of remaining wetland. FINDING: The applicant must meet the included conditions for the proposed wetland impacts in order to avoid an adverse effect on the ecological and hydrological characteristics of remaining wetland, as well as the requirements and regulations set forth by Sections 20401 — 20421 of Chanhassen City Code. (2) It shall be located as to minimize the impact on vegetation. FINDING: Efforts have been made by the applicant to minimize the impact on wetlands and vegetation through a variety of measures, including minimizing impact to wooded areas surrounding the current boat launch and the creation of wetland buffers. (3) It shall not adversely change water flow. FINDING: The applicant must meet the included conditions for the proposed wetland impacts in order to avoid an adverse effect on the hydraulic and hydrological characteristics of remaining wetland. The applicant is also in the process of obtaining the necessary permits from the Minnehaha Creek Watershed District in order to meet the District's Stormwater Rule. (4) The size of the altered area shall be limited to the minimum required for the proposed action. FINDING: The applicant has made a reasonable effort to limit the proposed wetland impacts to the minimum amount required in order to complete the construction of the park improvements project. During construction the contractor is required to follow approved plans to limit alterations to the minimum the project necessitates. (5) The disposal of any excess material is prohibited within remaining wetland areas. FINDING: The applicant and their contractor are prohibited from disposing of excess material within remaining wetland areas as well as any other activities which may negatively impact the remaining wetland areas. (6) The disposal of any excess material shall include proper erosion control and nutrient retention measures. 4 FINDING: The applicant and their contractor must submit a satisfactory erosion and sediment control plan, and comply with all applicable sections of Chanhassen City Code, the City's Surface Water Management Plan, and the Minnesota Pollution Control Agency (MPCA). The applicant has obtained a National Pollutant Discharge Elimination System Construction Stormwater Permit, effective 7/17/2014, from the MPCA for the proposed project. (7) Alterations to any wetland area are prohibited during waterfowl breeding season or fish spawning season, unless it is determined by the city that the wetland is not used for waterfowl breeding or fish spawning. FINDING: The applicant and their contractor are required to refrain from any wetland altering activity during waterfowl breeding and fish spawning season. (8) Alterations to wetland areas shall be mitigated in accordance with the requirements of this article if the activity results in a loss of wetland area and/or function and value of the wetland. FINDING: The applicant has submitted a replacement plan as part of the Joint Water Resource Permit Application for Wetland Replacement which was received on July 24, 2014. The applicant is proposing to replace the impacted area using wetland bank credits. The required replacement ratio is 2:1. This is consistent with Chapter 8420.0522. of the Wetland Conservation Act (WCA) Rules, and City Code, Chapter 20, Article VI. (9) Dedicated buffers in accordance with Sections 20-411. FINDING: The applicant must comply with the City's Wetland Protection Ordinance. RECOMMENDATION The Planning Commission recommends that the City Council approve the application of Carver County for a Wetland Alteration Permit for wetland replacement for proposed impacts to two wetlands, totaling .05 acres, as a part of the proposed Lake Minnewashta Regional Park Improvements Project. ADOPTED by the Chanhassen Planning Commission this 19a' day of August, 2014. CHANHASSEN PLANNING COMMISSION BY: Its Chairman CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 2014-23 NOTICE IS HEREBY GIVEN that the Chanhassen Planning Commission will hold a public hearing on Tuesday, August 19, 2014, 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 in conjunction with the Lake Minnewashta Regional Park improvement project on 10.37 acres of property zoned Rural Residential (RR) and located at 6900 Hazeltine Boulevard. Applicant/Owner: Carver County. A plan showing the location of the proposal is available for public review on the City's web site at wwwci.chanhassen. mn.us/2014-23 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. Krista Spreiter, Natural Resources Technician Email: kspreiter@ci.chanhassen.mn.us Phone: 952-227-1173 (Published in the Chanhassen Pillager on Thursday, August 7, 2014: No. 4996) 1+-a-3 Affidavit of Publication Southwest Newspapers State of Minnesota) )SS. County of Carver ) Laurie A. Hartmann, being duly sworn, 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, 331A.07, and other applicable laws, as amended (B) The printed public notice that is attached to this Affidavit and identified as No.y 9 9 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: abcdefghijklmnopgrstu IaurieA.Hamnann Subscribed and sworn before me on this Iday of a-2014 ic / cr..•..�.,g� 4 1 y 1 TS 1 RATE INFORMATION Lowest classified rate paid by commercial users for comparable space.... $31.20 per column inch Maximum rate allowed by law for the above matter ................................. $31.20 per column inch Rate actually charged for the above matter..............................................$12.59 per column inch SCANNED CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 2014-23 NOTICE IS HEREBY GIVEN that the Chanhassen Planning Commission will hold a public hearing on Tuesday, September 16, 2014, 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 in conjunction with the Lake Minnewashta Regional Park improvement project on 10.37 acres of property zoned Rural Residential (RR) and located at 6900 Hazeltine Boulevard. Applicant/owner: Carver County. 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/2014-23 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. Krista Spreiter, Natural Resources Technician Email: kspreiter@ci.chanhassen.mn.us Phone: 952-227-1173 (Publish in the Chanhassen Villager on September 4, 2014) SCANNED Minnesota Wetland Conservation Act Notice of Decision Local Government Unit (LGU) Address City of Chanhassen 7700 Market Boulevard, PO Box 147 Chanhassen, MN 55317 1. PROJECT INFORMATION Applicant Name Project NameDate of Application Carver County Parks Department Lake Minnewashta Regional Park Application Number Im rovements Pro'ect 8/28/14 2014-03 Attach site locator map. T of Decision: ❑ Wetland Boundary or Type ❑ No -Loss ❑ Exemption ❑ Sequencing ® Replacement Plan (with Addendum) ❑ Banking Plan Technical Evaluation Panel Findings and Recommendation (if any): ❑Approve ❑ Approved with conditions ❑ Deny 2. LOCAL GOVERNMENT UNIT DECISION Date of Decision: April 14, 2014 ® Approved ❑ Approved with conditions (include below) ❑ Denied LGU Findings and Conclusions (attach additional sheets as necessary): The City of Cbanbassen has reviewed the Joint Water Resource Application for wetland replacement prepared and provided by W.S.B. and Associates, Inc., for the proposed Lake Minnewashta Regional Park Improvements Project, and addendum dated August 281 2014. The addendum to the proposed replacement plan includes an additional 806 square feet of wetland impact to Wetland D (Lake Minnewashta), for a revised total of .07 acres (2,984 sf) of wetland impacts. All proposed impacts, including impacts to Wetland D, Wetland G, and Wetland H, are outlined in the revised plans (attached) submitted by WSB & Associates, dated August 26, 2014. The proposed project is located within Lake Minnewashta Regional Park, Section 4, TI 16 N, R23W, within the City of Cbanha sen. The wetland delineation report was completed and submitted By WSB & Associates on February 21, 2014. The proposed replacement plan provides detailed information on alternatives, and options considered to avoid and minimiwetland impacts. The replacement plan proposes that .14 acres (.07 ac at a 2:1 ratio) resulting from the park improvements, would be replaced using wetland bank credits, purchased by Carver County from wetland bank account #1375, located in the same Bank Service Area 7, and Major Watershed 19. On August 19, 2014 a public hearing was held and the application was reviewed by the Cbanhassen Planning Commission, resulting in recommendation of approval. The Chanhassen City Council approved the application and authorized the Water Resources Coordinator to sign the Joint Water Resource Application on September 8th, 2014. As the LGU responsible for administration of Minnesota R. 8420, we approve the application and its attachments (dated August 28, 2014), with the following conditions: BWSR Forms 11-25-09 Page 1 of 3 The applicant must prepare the Application for Withdrawal of Wetland Credits from the Minnesota Wetland Bank for signature and submittal to the Minnesota Board of Water and Soil Resources. The City must receive notice from the MN BWSR Wetland Bank Coordinator that the wetland bank has been debited prior to the occurrence of any wetland impacts. A signed Landowner Statement and Contractor Responsibility form shall be provided to City prior to commencement of activity. This concludes our review. Once the conditions above have been met, this application will be For Replacement Plans ing credits from the State Wetland Bank: Bank Account # Bank Service Area County Credits Approved for Withdrawal BWSR Roadway Title Terrance Jeffery, WDC (sq. ft. or nearest .01 acre) Replacement Bank Date Phone Number and E-mail Bank #1375 7 Carver .14 acres Replacement Plan Approval Conditions. In addition to any conditions specified by the LGU, the approval of a Wetland Replacement Plan is conditional upon the following: ❑ Financial Assurance: For project -specific replacement that is not in -advance, a financial assurance specified by the LGU must be submitted to the LGU in accordance with MN Rule 8420.0522, Subp. 9 (List amount and type in LGU Findings). ❑ Deed Recording: For project -specific replacement, evidence must be provided to the LGU that the BWSR "Declaration of Restrictions and Covenants" and "Consent to Replacement Wetland" forms have been filed with the county recorder's office in which the replacement wetland is located. ® Credit Withdrawal: For replacement consisting of wetland bank credits, confirmation that BWSR has withdrawn the credits from the state wetland bank as specified in the approved replacement plan. Wetlands may not be impacted until all applicable conditions have been met! LGU Authorized Signature: Signing and mailing of this completed form to the appropriate recipients in accordance with 8420.0255, Subp. 5 provides notice that a decision was made by the LGU under the Wetland Conservation Act as specified above. If additional details on the decision exist, they have been provided to the landowner and are available from the LGU upon request. Name Title Terrance Jeffery, WDC Water Resources Coordinator Signa Date Phone Number and E-mail 9/11/2014 952.227.1168 ,J t'effe ci.chanhassen.mn.us BWSR Forms 11-25-09 Page 2 of 3 THIS DECISION ONLY APPLIES TO THE MINNESOTA WETLAND CONSERVATION ACT. Additional approvals or permits from local, state, and federal agencies may be required. Check with all appropriate authorities before commencing work in or near wetlands. Applicants proceed at their own risk if work authorized by this decision is started before the time period for appeal (30 days) has expired. If this decision is reversed or revised under appeal, the applicant may be responsible for restoring or replacing all wetland impacts. This decision is valid for three years from the date of decision unless a longer period is advised by the TEP and specified in this notice of decision. ftp\ 00 Ir13,'1111116YtZ�C�1RyC17�1 Pursuant to MN Rule 8420.0905, any appeal of this decision can only be commenced by mailing a petition for appeal, including applicable fee, within thirty (30) calendar days of the date of the mailing of this Notice to the following as indicated: LJ Appeal of an LGU staff decision. Send petition and $50_00 fee (if applicable) to: QI Appeal of LGU governing body decision. Send petition and $50 filing fee to: Executive Director Minnesota Board of Water and Soil Resources 520 Lafayette Road North St. Paul, MN 55155 4. LIST OF ADDRESSEES SWCD TEP member. Collin Schoenecker BWSR TEP member: Ben Meyer LGU TEP member (if different than LGU Contact): DNR TEP member: Brooke Haworth DNR Regional Office (if different than DNR TEP member): WD or WMO (if applicable): Courtney Hall, Minnehaha Creek Watershed District Applicant (notice only) and Landowner (if different): Martin Walsh, Carver County Parks Members of the public who requested notice (notice only): Andi Moffatt, WSB & Associates Corps of Engineers Project Manager (notice only) Melissa Jenny BWSR Wetland Bank Coordinator (wetland bank plan applications only): BWSR Forms I1-25-09 Page 3 of 3 5. MAH,ING INFORMATION ➢For a list of BWSR TEP representatives, see: www.bwsr.state.mn.us/aboutbwsr/workareas[WCA areas pdf ➢For a list of DNR TEP representatives, see: www.bwsr.state.mn.us/wetlands/wca/DNR TEP contacts.pdf ➢Department of Natural Resources Regional Offices: NW Region: NE Region: Central Region: Southern Region: Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Reg. Env. Assess. Reg. Env. Assess. Ecol. Div. Ecol. Resources Div. Ecol. Resources Ecol. Div. Ecol. Resources 2115 Birchmont Beach Rd. 1201 E. Hwy. 2 Div. Ecol. Resources 261 Hwy. 15 South NE Grand Rapids, MN 1200 Warner Road New Ulm, MN 56073 Bemidji, MN 56601 55744 St. Paul, MN 55106 For a map of DNR Administrative Regions, see: hn:Hfiles.dnr.state.mn.us/aboutdnr/dnr regions.pdf ➢For a list of Corps of Project Managers, see: www.mvp.usace.armv.mil/reug latpry/default.asp?paeeid=687 or send to: Dept. of the Army, Corps of Engineers, St. Paul District ATTN: CO -R, 190 Fifth Street East St. Paul, MN 55101-1638 ➢For Wetland Bank Plan applications, also send a copy of the application to: Minnesota Board of Water and Soil Resources Wetland Bank Coordinator 520 Lafayette Road North St. Paul, MN 55155 6. ATTACHMENTS In addition to the site locator map, list any other attachments: ® Joint Notification Application and Addendum, dated August 28, 2014. BWSR Forms 11-25-09 Page 4 of 3 N Minnesota Wetland Conservation Act Notice of Application Local Government Unit (LGU) Address City of Chanhassen 7700 Market Blvd PO Box 147 Chanhassen, MN 55317 1. PROJECT INFORMATION Applicant Name Project Name Date of Application Martin Walsh, Carver County Lake Minnewashta Regional Application Number Parks Department Park Improvements 8/28/2014 2014 03 Type of Application check all that apply): ❑ Wetland Boundary or Type ❑ No -Loss ❑ Exemption ❑ Sequencing ® Replacement Plan (Addendum) ❑ Banking Plan Summary and description of Dr000sed Droiect (attach additional sheets as necess WSB & Associates, Inc., on behalf of the Carver County Parks Department, has submitted an addendum to their original Joint Water Resource Permit Application for a Wetland Replacement Plan for the proposed Lake Minnewasta Regional Park Improvements Project, dated July 24, 2014. The addendum to the proposed replacement plan includes an additional 806 square feet of wetland impact, for a revised total of .07 acres (2,984 sf) of wetland impacts to Wetland D (Lake Minnewashta). All proposed impacts, including impacts to Wetland D, Wetland G, and Wetland H, are outlined in the revised plans (attached) submitted by WSB & Associates, dated August 26, 2014. The proposed project is located within Lake Minnewashta Regional Park, Section 4, T116 N, R23 W, within the city of Chanhassen. The wetland delineation report was completed and submitted By WSB & Associates on February 21, 2014. The proposed replacement plan provides detailed information on alternatives, and options considered to avoid and minimize wetland impacts. The replacement plan proposes that .14 acres (.07 ac at a 2:1 ratio) resulting from the park improvements, including road reshaping/paving, creation of an access road, boat launch improvements, trail improvements, and construction of an entrance turnaround, would be replaced using wetland bank credits, purchased by Carver County from wetland bank account #1375, located in the same Bank Service Area 9, and Major Watershed 19. BWSR Forms 7-1-10 Page I of 2. APPLICATION REVIEW AND DECISION Signing and mailing of this completed form to the appropriate recipients in accordance with 8420.0255, Subp. 3 provides notice that an application was made to the LGU under the Wetland Conservation Act as specified above. A copy of the application is attached. Comments can be submitted to: Name and Title of LGU Contact Person Terry Jeffery, Water Resources Coordinator Comments must be received by (minimum 15 business -day comment period): N/A Address (if different than LGU) Date, time, and location of decision: September 8, 2014 7:00 PM Chanhassen City Council Chambers Phone Number and E-mail Address Decision -maker for this application: (952)227-1168 ❑ Staff tjeffery@ci.chanhassen.mn.us ® Governing Board or Council Signature: Date: 81MLYA BWSR Forms 7-1-10 Page 2 of 3 3. LIST OF ADDRESSEES ® SWCD TEP member: Collin Schoenecker I2S1 BWSR TEP member: Ben Meyer ❑ LGU TEP member (if different than LGU Contact): ® DNR TEP member: Brooke Haworth ® DNR Regional Office (if different than DNR TEP member) Melissa Doperalski ® WD or WMO (if applicable): Minnehaha Creek Watershed District ® Applicant (notice only) and Landowner (if different) Martin Walsh, Carver County Parks Department ❑ Members of the public who requested notice (notice only): Andi Moffatt, WSB & Associates, Inc. ® Corps of Engineers Project Manager (notice only) Melissa Jenny ❑ BWSR Wetland Bank Coordinator (wetland bank plan applications only) 4. MAILING INFORMATION ➢For a list of BWSR TEP representatives: www.bwsr.state.mn.us/contact/WCA areas.odf ➢For a list of DNR TEP representatives: www.bwsr.state.mn.us/wetlands/wea/DNR TEP contacts.pdf Department of Natural Resources Regional Offices: NW Region: NE Region: Central Region: Southern Region: Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Div. Ecol. Resources Div. Ecol. Resources Div. Ecol. Resources Div. Ecol. Resources 2115 Bvchmont Beach Rd. NE 1201 E. Hwy. 2 1200 Warner Road 261 Hwy. 15 South Bemidi, MN 56601 Grand Rapids, MN 55744 St. Paul, MN 55106 New Ulm, MN 56073 For a map of DNR Administrative Regions, see: hM://files.dnr.state.mn.us/aboutdnr/dnr regions.pdf ➢For a list of Corps of Project Managers: www.mvp.usace.army.mil/re ug latga/default.asp?pap_eid=687 or send to: US Army Corps of Engineers St. Paul District, ATTN: OP -R 180 Fifth St. East, Suite 700 St. Paul, MN 55101-1678 ➢For Wetland Bank Plan applications, also send a copy of the application to: Minnesota Board of Water and Soil Resources Wetland Bank Coordinator 520 Lafayette Road North St. Paul, MN 55155 5. ATTACHMENTS In addition to the application, list any other attachments: ® Joint Permit Application and Memorandum, dated August 26, 2014. ® Revised Plan, submitted by WSB & Associates, received August 28, 2014. BWSR Forms 7-1-10 Page 3 of 3 A WSB engineering -planning • environmental- construction 701 Xenia Avenue south suite 300 Minnapois, MN 55416 Tet: 763541-4800 Fax: 763-541-1700 Memorandum To: Courtney Hall, Minnehaha Creek Watershed District Eric Megow, Wenck Copy: Marry Walsh, Carver County Morgan Dawley, WSB & Associates Melissa Jenny, US Corps of Engineers Ben Meyer, BWSR Jennie Skancke, DNR Brooke Haworth, DNR Mike Wanous, Carver SWCD Terry Jeffery, City of Chanhassen Krista Spreiter, City of Chanhassen From: Andi Moffatt, WSB & Associates Date: August 26, 2014 Re: Carver County Lake Minnewashta Regional Park Improvements MCWD Response for Additional Information WSB Project No. 1945-050 In response to your letter dated August 12, 2014 regarding the above referenced application, please find the additional information requested outlined below and attached. Shoreline Stabilization Rules 1. Earth Evans followed up with you on an email dated August 13, 2014 and a phone call on August 18, 2014 regarding the erosion intensity scoresheet. From this conversation it is our understanding that this scoresheet is not needed. 2. The cross sections and details you requested are on sheet 33-35 of the plan set (and a signed copy of the plans is attached in the sharefile link). Floodnlain Protection 1 and 2. The floodplain elevation of 945 has been added to sheet 33 to show the floodplain in relation to the boat launch. The sidewalk is out of the floodplain. The boat launch and riprap for the storm sewer outfall result in 38 CY of fill. There is additional storage provided in the stormwater pond to provide 38 CY of storage. From your conversation with Earth Evans, it is our understanding that additional information is not needed. Equal Opportunity Employer mbeng.00m K:CIW5�.imoilNCNDJRa1O-L2614-MCW d. 1) 96J 96, II I / d my I T 2 I ; LAKE MINNMASHTA REGIONAL PARK 101/ PARK IMPROVEMENT PROJECT "�aial. [V1A P L- S9 �S3 66 yS S � D 0 PS 0 960 96J 96, II I / d my I T 2 I ; LAKE MINNMASHTA REGIONAL PARK 101/ PARK IMPROVEMENT PROJECT "�aial. [V1A P L- L WSB A .4.vn iuo-�. hu engineering • planning • environmenta I -construction 701 Xenia Avenue South Suite 300 Minneapolis, MN 55416 Tel: 7635414800 Fax: 763541-1700 Memorandum To: Krista Spreiter, City of Chanhassen Terry Jeffery, City of Chanhassen Melissa Jenny, US Corps of Engineers Copy: Marty Walsh, Carver County Morgan Dawley, WSB & Associates Melissa Jenny, US Corps of Engineers Ben Meyer, BWSR Jennie Skancke, DNR Brooke Haworth, DNR Mike Wanous, Carver SWCD From: Andi Moffatt, WSB & Associates Date: August 26, 2014 Re: Carver County Lake Minnewashta Regional Park Improvements Additional Wetland Impact WSB Project No. 1945-050 Attached, please find a revised wetland impact figure for the Lake Minnewashta Regional Park project. A permit application for wetland impacts was submitted to the City as the LGU and to the US Corps of Engineers on July 22, 2014. While the plans have not changed, we discovered some additional WCA impact above the OHW of Lake Minnewashta associated with the boat launch and storm sewer outfall. This adds 806 sf of additional impact. This area is currently the boat launch area and consists of the sand and gravel area of the launch with some vegetation adjacent to the launch area. Wetland impacts will be mitigated through the purchase of wetland credits via the same wetland bank proposed. If you have any questions or need additional information, please feel free to call me at 763-287-7196. Equal Opportunity Employer wsbeng.com Kd19i50YJl YcmItiARMO 2614-WOWNAYmmE , o fy g J HCDI 9'a I� m5 n /I/ J �JJJ� OIyFy11 Ty 1L' ToTJ ♦ �aM1 ♦ � � ZZZZZZ� � . A 1 `• • / �` Bis (.I 935 \ < / Be I 95y 959 DSJ 6 961 ' 0 o u m es O ( 96 963 �? 4 a, n" c 7 1 �c z � 0 A.amara LANE IR/1EWASKTA REGIONAL PARK A� �, 3014 PARK MPROVEIIENT PAO.ECT CARVER COUNTY. MNNES07 CITY OF CHANHASSEN CARVER & HENNEPIN COUNTIES NOTICE OF PUBLIC HEARING PLANNING CASE NO. 2014-23 NOTICE IS HEREBY GIVEN that the Chanhassen Planning Commission will hold a public hearing on Tuesday, August 19, 2014, 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 in conjunction with the Lake Minnewashta Regional Park improvement project on 10.37 acres of property zoned Rural Residential (RR) and located at 6900 Hazeltine Boulevard. Applicant/Owner: Carver County. 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/2014-23 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. Krista Spreiter, Natural Resources Technician Email: kspreiter@ci.chanhassen.mn.us Phone: 952-227-1173 (Publish in the Chanhassen Villager on August 7, 2014) SCANNED Minnesota Wetland Conservation Act Notice of Application Local Government Unit (LGU) Address City of Chanhassen 7700 Market Blvd PO Box 147 Chanhassen, MN 55317 1. PROJECT INFORMATION Applicant Name Project Name Date of Application Martin Walsh, Carver County Lake Minnewashta Regional Application 17/24/2014 Number Parks Department Park Improvements 2014 113 Type of Application (check all that apply): ❑ Wetland Boundary or Type ❑ No -Loss ❑ Exemption ❑ Sequencing ® Replacement Plan ❑ Banking Plan and descrintion of Dronosed Droiect (attach additional sheets as WSB & Associates, Inc., on behalf of the Carver County Parks Department, has submitted a Joint Permit Application for a Wetland Replacement Plan for the proposed Lake Minnewasta Regional Park Improvements Project. The proposed project is located within Lake Minnewashta Regional Park, Section 4, TI 16 N, R23W, within the city of Chanhassen. The wetland delineation report was completed and submitted By WSB & Associates on February 21, 2014. A previous wetland delineation was performed by SRF Consulting and approved in 2011. Both wetland boundaries are shown on the project plans. The proposed replacement plan indicates that there will be a total of .05 acres (2,191 sf) of wetland impacts to two separate wetland basins, identified as Wetland G (W 10) and Wetland H (W22) in the plans submitted by WSB & Associates, included in Appendix A of the application (SRF delineation ID in parentheses). The proposed replacement plan provides detailed information on alternatives, and options considered to avoid and minimise wetland impacts. The replacement plan proposes that .1 acres (.05 ac at a 2:1 ratio) resulting from the park improvements, including road reshaping/paving, creation of an access road, boat launch improvements, trail improvements, and construction of an entrance turnaround, would be replaced using wetland bank credits, purchased by Carver County from wetland bank account #1375, located in the same Bank Service Area 0, and Maior Watershed 19. (.CA -� fe, b Ciow� BWSR Forms 7-1-10 Pagel of 3 3. LIST OF ADDRESSEES ® SWCD TEP member: Collin Schoenecker Q9 BWSR TEP member: Ben Meyer ❑ LGU TEP member (if different than LGU Contact): ® DNR TEP member: Brooke Haworth ® DNR Regional Office (if different than DNR TEP member) Melissa Doperalski ® WD or WMO (if applicable): Minnehaha Creek Watershed District ® Applicant (notice only) and Landowner (if different) Martin Walsh, Carver County Parks Department ❑ Members of the public who requested notice (notice only): Andi Moffatt, WSB & Associates, Inc. ® Corps of Engineers Project Manager (notice only) Melissa Jenny ❑ BWSR Wetland Bank Coordinator (wetland bank plan applications only) 4. MAILING INFORMATION ➢For a list of BWSR TEP representatives: www.bwsr.state.mn.us/contact/WCA areas.ndf ➢For a list of DNR TEP representatives: www.bwsr.state.mn.us/wetlands/wca/DNR TEP contacts.pdf ➢Department of Natural Resources Regional Offices: NW Region: NE Region: Central Region: Southern Region: Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Reg. Env. Assess. Ecol. Div. Ecol. Resources Div. Ecol. Resources Div. Ecol. Resources Div. Ecol. Resources 2115 Birchmont Beach Rd. NE 1201 E. Hwy. 2 1200 Warner Road 261 Hwy. 15 South Bemid'i, MN 56601 Grand Rapids, MN 55744 St. Paul, MN 55106 New Ulm, MN 56073 For a map of DNR Administrative Regions, see: hnp:Hfiles.dnr.state.mn.us/aboutdnr/dnr regions.pdf ➢For a list of Corps of Project Managers: ww-w.myp.usace.army.mil/regulatory/default.asp?pageid=687 or send to: US Army Corps of Engineers St. Paul District, ATTN: OP -R 180 Fifth St. East, Suite 700 St. Paul, MN 55101-1678 ➢For Wetland Bank Plan applications, also send a copy of the application to: Minnesota Board of Water and Soil Resources Wetland Bank Coordinator 520 Lafayette Road North St. Paul, MN 55155 5. ATTACHMENTS In addition to the application, list any other attachments: ® Joint Permit Application and Memorandum, dated July 22, 2014. BWSR Forms 7-1-10 Page 3 of 3 2. APPLICATION REVIEW AND DECISION Signing and mailing of this completed form to the appropriate recipients in accordance with 8420.0255, Subp. 3 provides notice that an application was made to the LGU under the Wetland Conservation Act as specified above. A copy of the application is attached. Comments can be submitted to: Name and Title of LGU Contact Person Terry Jeffery, Water Resources Coordinator Comments must be received by (minimum 15 business -day comment period): August 14, 2014 Address (if different than LGU) Date, time, and location of decision: September 8, 2014 7:00 PM Chanhassen City Council Chambers Phone Number and E-mail Address Decision -maker for this application: (952)227-1168 ❑ Staff tjeffery@ci.chanhassen.mn.us ® Governing Board or Council Signature: L114yr� Date: — 2+, 7-001 BWSR Forms 7-1-10 Page 2 of 3 A WSB engineering -planning -environmental -construction 701 Xenia Avenue South Suite 300 Minneapolis, MN 55416 Tel: 763-5414800 Fax: 763-541-1700 Memorandum To: Courtney Hall, Minnehaha Creek Watershed District Melissa Jenny, US Corps of Engineers Ben Meyer, BWSR Jennie Skancke, DNR Brooke Haworth, DNR Mike Wanous, Carver SWCD Terry Jeffery, City of Chanhassen Copy: Marry Walsh, Carver County Morgan Dawley, WSB & Associates From: Andi Moffat4 WSB & Associates Date: July 12, 2014 Re: Carver County Lake Minnewashta Regional Park Improvements Permit Application WSB Project No. 1945-050 On behalf of Carver County, attached, please find a permit application and supporting documents for the Lake Minnewashta Regional Park Improvement Project. This application is for wetland impacts and watershed district approval. Prosect Description: Carver County Parks has received grant funding for proposed improvements to Lake N4mnewashta Regional Park that incudes; road reshaping/paving (5657 linear feet), an access road to the dog park (1587 linear feet), boat launch improvements, some trail improvements (500 linear feet realigned), and construction of an entrance turnaround. The purpose of this project is to improve the public amenities within the park as well as provide safer access along the road for the public. The project is within the Minnehaha Creek Watershed District (MCWD). The Riley -Purgatory Bluff Creek Watershed District (RPBCWD) has indicated the project is not within their boundaries. In total, the project will disturb 10.37 acres of land. The existing impervious surface is 6.04 acres and the proposed impervious is 6.49 acres for a net increase of 0.45 acres. This includes 500 linear feet of trail improvements, the reconstructed boat launch, reconstructed parking area for the boat launch, and entrance turnaround area. With the trail, new bituminous trail is being constructed as well as demarcation of a cross-country skiing trail. The road within the park will be resurfaced from gravel to bituminous and a bypass lane at the park entrance will be constructed. Equal Opportunity Employer •sberg.00rrn c:�o i wwww®�v�,mo-xm -o+u u - xa�r.oW�arc. July 22, 2014 Page 2 A previous delineation was completed in the Lake Minnewashta Regional Park by SRF Consulting Group and LGU approved in 2011. The 2011 wetland boundaries are shown on the project plans. Additional wetland was delineated by WSB in September 2013. A complete delineation report was submitted to the City of Chanhassen as the LGU for WCA on February 21, 2014. Attached with this application are the following appendices: Appendix A — Figures Appendix B — Plan set Appendix C — NPDES Permit Appendix D — Supporting Stormwater Management Analysis A discussion of how the project meets the MCWD Hiles is provided below. Wetlands and Buffers Wetlands have been avoided to the extent practical and the project anticipates 2191 sf (0.05 acres) of wetland impact. About 0.383 sf (0.009 acres) of trail will also be removed from a wetland. The attached wetland application addresses wetland sequencing. Wetland impacts are proposed to be mitigated by purchase of wetland credits, anticipated through the purchase of 0.1 acres from the Jeff Richards bank # 1375 in Carver County. The purchase agreement will be submitted under separate cover. The MCWD requires wetland buffers for projects that trigger the wetland or stormwater rule, as this project does. A buffer on public land, as is the case with this project, can be documented by written agreement with the District and the County. This is the County's preferred route. The buffer width is based on the District's wetland assessment. Based on this assessment, the wetlands have the following classifications and resulting buffer widths and are shown on the attached plans in Appendix A. Wetland (SRF Wetland Management Watershed Required Provided delineation Type (at Classification District Buffer Width Buffer Width label in project (based on (max/min) in in feet parentheses) area) MCWD feet assessment A 3 Manage 2 MCWD 30/16 3-30 D 13 Preserve MCWD 75/67 0 E(W9) 6 Manage MCWD MCWD-40 10-40 /34 F 21 6 Preserve MCWD 75/67 3-75 H (W22) 2 Manage 3 MCWD 20/16 0-20 Erosion Control Plans The construction plans attached include erosion control and turf establishment plans as Sheet 20-23. The SWPPP is in Sheets 24-27. These plans meet the requirements of the erosion control rule. The plans include biorolls, silt fence, rock check entrance, and seeding. Receiving July 22, 2014 Page 3 waters include surrounding small wetlands and ultimately Lake Minnewashta. A copy of the NPDES permit is also attached. Stormwater Management As stated, this project involves paving approximately 1 -mile of the existing gravel entrance road from Hazeltine Boulevard into Lake Minnewashta Regional Park. Additionally, the existing gravel boat launch parking lots (Appendix D) will be removed. The southerly lot will be replaced with an expanded parking lot and new boat launch (see plan set in Appendix B). Existing conditions land use is park land. Drainage patterns will not change from existing. • The total project area is 10.37 acres • Existing impervious surfaces in MCWD (including gravel) = 6.04 acres • Proposed impervious surfaces in MCWD = 6.49 acres • Increase in impervious surfaces in MCWD = 0.45 acres Based MCWD Stormwater Management Rule Table 5 the project is required to provide phosphorus control and rate control for the net increase in impervious surfaces. The increase in impervious is entirely due to the proposed boat launch parking lot; therefore BMPs have been focused in this location. Rate Control: MCWD requires that applicants demonstrate that their discharge rates have not increased from the pre -development for the 1 -year, 10 -year, and 100 -year critical storm events. There is no increase in impervious surfaces for the proposed entrance road and therefore no change in discharge rate. The existing culverts are proposed to be replaced in-kind. The existing and proposed discharge rates to Lake Minnewashta from the proposed boat launch parking lot are listed in Table 1. Table 1: Discharge Rate Comparison 2 -Year (CFS) 10 -Year (CFS) 100- Year* CFS Existing 1.0 4.9 12.6 Proposed 1.9 6.8 7.4 *Includes overflow over Brockton Road. The proposed discharge rates are less than or equal to existing for all storm events. See attached HydroCAD output for detailed results in Appendix D. Water Quality: MCWD requires phosphorus loadings for post -development to be less than or equal to existing phosphorus levels. P8 modeling was used to evaluate the water quality treatment of the proposed BMPs. Pre -development TP load = 9.5 lb/yr Post -development TP load = 0.51b/yr July 22, 2014 Page 4 A series of infiltration basins and a pond are proposed within the boat launch parking lot to provide water quality treatment. Supporting Documentation: The documents provided with this memo for review are: • Drainage Maps — Appendix D • HydroCAD Results — Appendix D • P8 results — Appendix D • Plan Set — Appendix B Floodulain FEMA floodplain elevation is 945.0. The OHW is 944.5. The existing boat launch will be reconstructed to accommodate better public access in this area. Currently, the boat launch has limited capacity and one launch area. The proposed launch will be reconstructed in the current location and include a double launch. The boat launch will be constructed to meet the DNB's Boat Ramp guidelines and as such, does not require a permit from the DNR. The design includes a double launch with concrete planks. The launch will extend from the upland side at elevation 946.3 into the water to elevation 943.93 as shown on the plans. The boat launch will result in 35 cy of fill in the floodplain. Based on the size of the basin, this will not increase the floodplain elevation of the lake. Project Timing: The project is anticipated to start September 1, 2014 and be completed October 31, 2015. Permit Request: On behalf of the City, we are requesting a permit from the MCWD, approval from the LGU for the WCA, and approval from the COE under Section 404. If you have any questions or need additional information, please feel free to call me at 763-287-7196. K"-01905050U��➢amiu�ME�10-01121 -AgebY WV��OVAwi Print Form WATER RESOURCE PERMTr APPLICATION FORM Use this form to notify/apply to the Mimehahs Creek Watershed District (MCWD) of a proposed project or work which may fall within their jurisdiction. Fill out this form completely and submit withyour site plan, maps, etc. to the MCWD at: 15320 Minnetonka Blvd. Mimietonka, MN 55345. Keep a copy for your records. YOU MUST OBTAIN ALL REQUIRED AUTHORIZATIONS BEFORE BEGINNING WORK. 1. Name of each property owner: Mailing Address: 1131ao k(uv 212 W City:Co orc State: -/V Zip: ,rT ZZ Email Address: PhonegV-/(!s(o' 5Z Fax: 2. Property Owner Representative Information (not required) (licensed contractor, architect, e�n�ggmeer, etc...) Business Name: WS$�/�� Representative Name: J' rd Mof f� 4'I Business Address' &J AGV 11a Aisle. 'SLI l C bb City: State: /-W Zip: 5CL(Q- Email Address: gmorffa-ton wlbrdn%m[ Phone: -2 - Fax: 3. Project Address: Lak ItA -1C City: Certo JLC', State: MN Zip: 331 Qtr Section(s): Section(s): Township(s): 1lfrN Range(s):.23 ✓ Lot: - Block: - Subdivision: PID: 4. Size of project parcel (square feet or acres): 10.?Q Area of disturbance (square feet): ln,3'jlt,c olumV a of excavation/fill (cubic yards):_ Area of existing impervious surface: (1.0tl Area of proposed impervious su face: la, L411 Length of shoreline affected (feet): _(_ Waterbody (& bay if applicable): LeAt Mi nntuUS6c 5. Type of permit being applied for (Check all that apply): X( EROSION CONTROL ❑ WATERBODY CROSSINGS/STRUCTURES j9( FLOODPLAIN ALTERATION J' STORMWATER MANAGEMENT WETLAND PROTECTION ❑ APPROPRIATIONS ❑ DREDGING ❑ ILLICIT DISCHARGE ❑ SHORELRiFJSTREAMBANK STABILIZATION 6. Project purpose (Check all that apply): ❑ SINGLE FAMILY HOME ❑ MULTI FAMILY RESIDENTIAL (apartments) 12� ROAD CONSTRUCTION ❑ COMMERCIAL or INSTITUTIONAL ❑ UTILITIES ❑ SUBDIVISIONS (include number of lots) ❑ DREDGING ❑ LANDSCAPING (pools, berms, etc.) ❑ SHORELINE/STREAMBANKSTABILIZATION ❑ OTHER(DESCRIBE): 7. NPDES/SDS General Stormwater Permit Number (if applicable): (500 8. Waterbody receiving runoff from site: 9. Project Timeline: Start Date: LL_ Completion Date: Qc.,�vwg S I 2.1p 1 Permits have been applied for: City JZCounty 13 MN Pollution Control Agency NR 13 COE FU Permits have been received: City _ County � MN Pollution Control Agency__N DNR COB By signing below, I hereby request a permit to authorize the activities described herein. I certify that I am familiar with MCWD Rules end that the proposed activity will be conducted in compliance with these Rules. I am familiar with the information contained in this application and, to the best of my knowledge and belief, all information Is true, complete and accurate. I understand that proceeding with work before all required authorizations are obtained may be subject to federal, state and/or local ad M ' 've, civil and/or criminal penalties. Signa6 t�of Each P perty Owhar 17 Deb Revised 7/15/13 Page 1 of I Joint Application Form for Activities Affecting Water Resources in Minnesota This Joint anplicatton form is the accepted means for In)Gating review of proposals that may affect a water resource (wetland, tributary, lake, etc.) in the State of Minnesota under state and federal regulatory programs. Applicalts for Minnesota Department of Natural Resources (DNR) Public Waters permits MUST use the MPARS online permitting system for submitting appiicatfons to the DNR. Applicants can use the Information entered into MPARS to substitute for completing parts of this joint application form (see the paragraph on MPARS at the end of the joint application form instructions for additional information). This form is only applicable to the water resource aspects of proposed prof acts under state and federal regulatory programs: other local applications and approvals nay be requ'red. Depending on the nature of the project and the location and type of water resources impacted, multiple authorizations may be required as different regulatory programs have different types of jurisdiction over different types of resources. Regulatory Review Structure Federal The St. Paul District of the U.S. Army Corps of Engineers (Corps) Is the federal agency that regulates discharges of dredged or fill material into waters of the United States (wetands, tributaries, takes, etc.) under Section 404 of the Clean Water Act (C'WA1 and regulates work In navigable waters uncer Sectio 10 V the Rivers and Harbors Act. Applications are assigned to Corps project managers who are responsible for implementing the Corps regulatory program within a particular geographic area. State There are three state regulatory programs that regulate activities affecting water resources. The Wetland Conservation Act IWCA) regulates most adivities affecting wetlands. R is administered by local government units (LGUs) which can be counties, townships, cities, watershed districts, watershed management organizations or state agencies (on state-owned land), The Minnesota DNR Division of Ecological arc Water Resources issues permits for work in specially -designated public waters via the Public Waters Work Permit Program IDNR Putlic waters Permits). The Minnesota Pollution Corti -o! Agency (MPCA) under Section 401 of the Clean Water Act certifies that discharges of dredged or fill material authorizeci by a federal permit or license comply with state water quality standards. One or more of these regulatory programs may be appllcab'e to any one project. Required Information Prior to submitting an application, applicants are strongly encouraged to seek input from the Corps Project Manager and LGU staff to identify regulatory Issues and required application materials for their proposed project. Project proponents w t request a pre - application consultation with the Cops and LGU to discuss their proposed project by providing the information required In Sections 1 through 5 of this joint appl.cation form to facilitate a meaningfu discussion about their project. Many LGUs provide a venue (such as regularly scheduled technical evaluation panel meetings) for potential applicants to ciscuss their projects with multiple agencies prior to submitting an application. Contact information is provided below. The following bullets outline the information general y required for several common types of delerminaEons!authorizations. • For del nation approvals and/or jurisdictional determmatiors, submit Parts 1, 2 and 5, and Attachment A. • For act vities involving CWA/1VCA exemptions, WCA no less determinations, and activities not requiring mitigation, submit Parts 1 through 5, and Attachment B. • For act.vities requiring comoensatory mitigation/replacement plan, submit Parts 1 thru 5, and Attachments C and D. • For local road autharity activities that quality for the state's local road wetland replacement program, submit Parts : through 5, and ALtachment5 C, D (if applicable), and E to both the Carps and the LGU. Ivllnnesota Interagency Water Resource Application Form February 2014 Page 1 of 13 Submission Instructions Send the completed joint application form and all required attachments to: US Army Corps of Engineers. Applications may be sent directly to the appropriate Corps Office. For a current tiring of areas of responsibilities and contact Information, visit the St. Pau! District's website at tdin:/fNnrnv.mva hhsace.carr•'v.rnUVNI•ss�oin ReReeulatar _sCA and select "Minnesota" frcm the contact Information box. Alternatively, applications may be sent directly to the St. Paul District Headquarters and the Corps will forward them to the appropriate field office. Section 401 Water quality Cenification: Applicants do not need to submit the Joint application form to the MPGA unless specifically requested, The MPCA will request a copy of the completed joirt application form directly from an apalicant when they determine an Individual 401 water quality certification is required for a proposed project. Wetland Conservation Act Local Government Unit: Send to the appropriate Local Government Unit. It necessary, contact your county Soil anc Water Conservation Distr'ct (SWCD) office or visit the Board of Water and Soil Resources (BWSR) web site (www.bwsr.state.mn,us) to determine the appropriate LGU. DNR Public Waters Permitting: In 2014 the DNR will begin using the Minnesota DNR Permitting and Reporting System (MPARS) for submission of Public Waters permit applications (hitns:/!webaoosll.onr.state.mn.us/moan/cubllclauthenticationlioein). Applicants for Public Waters permits MUST use the MPARS online permitting system for submitting applications to the DNR. To avoid duplication and to streamline the application process among the various resource agencies, applicants can use the Information entered Into MPARS to substitute for completing parts of this Joint application form. The N IPARS print/save function will provide the applicant with a copy of the Public Waters permit application which, at a minimum, will satisfy Parts one and two of this joint application. For certain types of activities, the MPARS appiication may aisc prwAde all of the necessary information required under Parts three and four of the joint appliratioi. However, it is the responsibility of the Applicant to make sure that the joint application contains all of the required irformation, including identification of all aquatic resources impacted by the project Isee Part four of the joint application). After confirming that the MPARS application contains ail of the required information In Parts one and two the Applicant may attach a copy to the joint application and fall in any missing information In the remainder of the Joint application. Minnesota Interagency Water Resource Application Form February 2014 Page 2 of 13 Project Name and/or Number: PART ONE: Applicant Information I( applicant is an entity (company, govemmem entity, partnership, etc.), an authorized contact person must be icendfied. It the applicant is using an agent (consultant, lawyer, or other third party) and has aut'+orlied them to act on their behalf, the agent's contact information must also be provided. Applicant/landowner Name: Marty Walsh, Carver County Mailing Address: 11360 Hwy 212 West, Cologne, MN 55322 Phone: 952-4665252 E-mail Address: mwalsh@co.carver.mn.us Authorized Contact (do not complete if same as above): Some as above Mailing Address: Phone: E-mail Address: Agent Name: WSB&Associates—AndlMoffa:t Mailing Address: 701 Xenia Ave — Suite 300. Mpls, MN 55416 Phone: 763-787-7196 E -mall Address: amoffatt@wsbeng.com PART TWO: Site Location Information County: Carver City/Township: Chanhassen Parcel ID and/or Address: Lake Mlnnewashta Regional Park Legal Description (Section, Township, Range): Section 4, Twp 116N, R23W Lat/Long (decimal degrees): Attach a map showing the Incation Of the site in relation to local streets, roads, highways. See attached figures Approximate size of site (acres) or If a linear project, length (feet): 7,244 linear feet H you know that your proposal will require an individual Permit from the U.S. Army Corps of Engineers, you must provide the names and addresses of ali property owners adjacent to the project site. This information may be provided by attaching a list to your application or by using block 25 of the Application for Department of _he Army permit which can be obtained at: http //s 'd.mvp.us=ce.armv:milLortals _7)docs/reeulat"JReglatoyDocs.renrloam 4345 2012oct.odf PART THREE: General Project/Site Information If this application is Wated to a celineation approval, exemption determination, jurisdictional determination, or other correspondence submitted prior to this app'icalion then cescribe that here and provide the Corps of Engineers project number. Descfibe the project that is being proposed, the project purpose and need, and schedule for implementation and comple_ion. The project description must fLly describe the nature and scope of the proposed activity including a description of all project elements that effect aeuatic resocrces (wetland, IaKe, tributary, etc.) and must also include plans and cross section or profile drawings showing the iocation, character, and dimensions of all proposed activities and aquatic resource impacts. Carver County Parks has received grant funding for proposed improvements to Lake Mlnnewashta Regional Park that incudes; road reshaping/paving (5657 linear feet), an access road to the dog park (1587 pnear feet), beat launch improvements, some trail improvements (500 linear feet realigned(, and construction of an entrance turnaround. The purpose of this project is to improve the public amenities within the park as well as Ni',nesota Interagency Water Resource Application Form Feoruary 2014 Page 3 of 13 provide safer access along the road for the public. In total, the project will disturb 10.37 acres of land. The existing impervious surface Is 6.04 acres and the proposed Impervious is 6.49 acres for a net increase of 0.45 acres. This includes 500 linear feet of trail improvements, the reconstructed boat launch, and a reconstructed parking area for the boat launch. With the trail, new bituminous trail is being constructed as well as demarcation of a cross-country skiing trail. The road within the park will be resurfaced from gravel to bituminous and a bypass lane at the park entrance will be constructed. A previous delineation was completed in the Lake Minnewashta Regional Park by SRF Consulting Group and LGU approved in 2011. The 2011 wetland boundaries are shown on the project plans. Additional wetland was delineated by WS8 in September 2013. A complete delineation report was submitted to the City of Chanhassen as the LGU for WCA on February 21, 2014. Wetlands have been avoided to the extent practical and the project anticipates 2191 sf 10.05 acres) cf wetland impact. 383 sf 10.099 acres) of trail will also he removed from a wetland. Additionally, the boat launch will be reconstructed to accommodate better public access in this area. I i Minne5ata Interagency Water Resource Application Form February 2014 Page 4 of 13 Project Name and/or Number: PART FOUR: Aquatic Resource Impact' Summary If your proposed project Involves a direct of indirect impact to an aquatic resource (wetland, lake, tributary, etc.) identify each impact in the table below. Include all anticipated impacts, including those expected to be temporary. Attach an overhead view map, aerial photo, and/or drawing shotving all of the aquatic resources In the project area and the IDrat:onls) of the proposed Impacts. label each aquatic resource on the map with a reference number or letter and Identify the impacts in the following table. 'H Impacts are temporary; enter the duration of the impacts In days neat to the T. For example, a project with a temporary access fa that would be removed after 220 days would be entered '11220)". 'Impacts less than 0-03 acre should be reported In square feet. impacts 0.01 acre or greater should be reported as acres and rounded to the nearest C.01 acre. Tributary impacts must be reported in linear feet of impact and an area of impact by Indicating first the linear feel of Impact along the flovdme of the stream followed by the area impact in parentheses). For example, a project that impacts 50 feet of a stream that is 6 feet wide would be reported as 50 ft (300 square feet). 'This is generally only applicable if you are applying for a da minim -is exemption under MN Rules 8420.042D Subp. 8, otherwise enter 'NIR'. 'Use Welland Plants and Plant Community Types of Minnesota and lMsconsir, a Ed. as modified in MN Rules "20.0405 Subp. 2. 'Refer to Major Watershed and Bank Service Area maps In MH Rules 8420.0522 Subp. 7. If any of the above identified impacts have already occurred, identify which impacts they are and the circumstances associated with each: NA PART FIVE: Applicant Signature ❑ Check here if you are requesting a ore -application consultation with the Corps and LGU based on the Information you have provided. Regulatory entities will not Initiate a formal application review N this box Is checked. By signature below, I attest that the information in this application is complete and accurate. I further attest that I possess the authority to uncerlake the work described herein. Signature: t •--s rbc' Date: 1 here 3y authorize Andl Moffett, VAS SiAssociates to act on my behalf as try agent in the processing of this application and to furnish, upon request, supplemental information In support of this application. 'The term "Impact" as used In this joint application form fs a generic term used for disclosure purposes to identify activities that may require approval from one or more regulatory agencies. For purposes of this form it Is not meant to indicate whether or not Mose activities may require mitigation/replacement. Minnesota Interagency Water Resource App kation form February 2014 Page 5 of 13 Type of impact Duration of county, Major 1 Aquatic Aquatic Resource: (fill, excavate, Impact Overall Size of Existing Plant Community Watershed a, ID (as noted on !Resource Type drain, or Permanent (P) Size of Impact' Aquatic in and Bank overhead view) ' (wetland, lake, remove orTemporary Resource ° service Area 0 tributary etc. yy ) i vegetation) (T)' pact Ain' Impact Area' p of Ice Area Pact s G Rio Wetland Fill P 979sf 979 s Wet meadow Carver, 20,7 H(W22) Welland Fill P 1212 s 5661st Wet Meadow Carver,20,7 'H Impacts are temporary; enter the duration of the impacts In days neat to the T. For example, a project with a temporary access fa that would be removed after 220 days would be entered '11220)". 'Impacts less than 0-03 acre should be reported In square feet. impacts 0.01 acre or greater should be reported as acres and rounded to the nearest C.01 acre. Tributary impacts must be reported in linear feet of impact and an area of impact by Indicating first the linear feel of Impact along the flovdme of the stream followed by the area impact in parentheses). For example, a project that impacts 50 feet of a stream that is 6 feet wide would be reported as 50 ft (300 square feet). 'This is generally only applicable if you are applying for a da minim -is exemption under MN Rules 8420.042D Subp. 8, otherwise enter 'NIR'. 'Use Welland Plants and Plant Community Types of Minnesota and lMsconsir, a Ed. as modified in MN Rules "20.0405 Subp. 2. 'Refer to Major Watershed and Bank Service Area maps In MH Rules 8420.0522 Subp. 7. If any of the above identified impacts have already occurred, identify which impacts they are and the circumstances associated with each: NA PART FIVE: Applicant Signature ❑ Check here if you are requesting a ore -application consultation with the Corps and LGU based on the Information you have provided. Regulatory entities will not Initiate a formal application review N this box Is checked. By signature below, I attest that the information in this application is complete and accurate. I further attest that I possess the authority to uncerlake the work described herein. Signature: t •--s rbc' Date: 1 here 3y authorize Andl Moffett, VAS SiAssociates to act on my behalf as try agent in the processing of this application and to furnish, upon request, supplemental information In support of this application. 'The term "Impact" as used In this joint application form fs a generic term used for disclosure purposes to identify activities that may require approval from one or more regulatory agencies. For purposes of this form it Is not meant to indicate whether or not Mose activities may require mitigation/replacement. Minnesota Interagency Water Resource App kation form February 2014 Page 5 of 13 Project Name and/or Number: Attachment B Supporting Information for Applications Involving Exemptions, No loss Determinations, and Activities Not Requiring Mitigation Complete t!+Is part If you ma:main that the identified aquatic resource impacts in Part Four do not require wetland replacemenVconipensatory mitigation OR tjyou are seeking verifiation that the proposed water resource impects ere either exempt from replacement or are not under CWA/WC4jur sdiction. Identify the specific exemption or no -less provision for which you believe your projector site qualifies: NA Provide a detailed explanation of how your projector site qua!ifies for the above. Be specific and provide and refer to attachments and exhibits that support your contentioc. Appllcants should refer to rues (e.g. W CA rules), guidance documents (e.g. B WSR guidance, Corps guidance letters/public; notices), and permit conditions Wg. Corps General Permit conditions) to determine the necessary information to support the application. Applicants are strongly encouraged to contact the WCA LGU and Corps Project Manager prior to submitting an application if they are unsure of what type of information to provide: NA Minnesota Interagency Water Resource Application Form February 2014 Page 7 of 13 P-oject Name and/or Nu-nber: Attachment C Avoidance and Minimization Project Purpose, Need, and Requirements Clearly state the purpose or your project and need for your project. Also include a descripFori of any specie c requ'rements of the pio)ect as they relate to projec; location, project footprint, water management, and any other applicable requirements. Attach an overhead plan sheet showing all relevant features of the project (buildings, roads, etc.), aquatic resource features (impact areas noted) and construction details (grading plans, storm Ovate, management plans, etc,), referencing these as necessary: Carver County Parks has received grant funding for proposed Improvements to Lake Minnewashta Regional Park that incudes; road reshaping/paving (Main Park), boat launch improvements, some trail improvements, and construction of an entrance turnaround. The purpose of this project is to improve the public amenities within the park as well as provide safer access along the road for the public. The main road through the park Is currently gravel This project will pave the road to improve safety and reduce sediment runoff from the road to the surrounding area. The main entrance will also be reconstructed to provide better, safer access and to include a turnaround area. The boat launch Is in need of repair, so the project includes reconstructing the existing boat launch to meet DNR requirements. The parking area at the boat launch will also be reconstructed and the existing gravel paved. This will reduce sediment directed to Lake Minnewashta. A trail near the boat launch parking lot will also be reconstructed to provide safer pedestrian access, recreation. This will Include designating a cross-country ski trail in this location also. Avoidance. Both the CWA and the WCA require that Impacts to aquas c resources be avoided if practicable alternatives exist. Clearly describe all on-site measures considered to avoid impacts to aquatic resources and discuss at least two project alternatives that avoid all impacts to aquatic resources on the site. These alternatives may InDudc alternative site p ans, alternate sites, and/or not doing the project- Alterratives should be feas'ble and prudent {see MN Rules 8420.0520 Subp. 2 Q. Applicims are encouraged to attach drawings and pians to support their analysis: Wetland impacts have been avoided to the greatest extent possible. Wetland A is located at the entrance to the park. Initial design of the road included the road slope Impacting this wetland. However, the design has been changed to Include a retaining wall In this location to completely avoid the wetland impact. Otherwetlands, including Wetland E, F, 8, and C have also been completely avoided. Wetlands G and H include the only impact on the project for a total of 2191 sf. Wetland G is impacts from the boat launch parking lot reconstruction. To avoid additional impacts to the wooded area north of the parking lot or completely realigning the road on the south, Impacts to this wetland are unavoidable. Wetland H will be impacted from moving the trail in this location. Currently, the existing trail bisects the wetland. The project will remove this existing trail and move it to skirt along the side of the trail. Approximately 363 sf of wetland will be restored with the removal of the trap in this location. Credit is not being sought for this removal, tut should be recognized with minimization efforts. There is an existing boat launch within the projectthat will be reconstructed to accommodate the additional boat traffic at this location. This boat launch design is in conformance with DNR requirements and as such, does not require a DNR permit. Minimization. Both the CWA and the WCA require that all unavoldabie impacts to aquatic resources be min;mlzed to the greatest extent practicable. Discuss a'I features o- the proposed projec: that have been modified to minimize the impacts to water resources (see MN Rules 8420.0520 Sabp. 4j: Impact to Wetland His from the realignment of the trail. Currently, a trail goes through the existing wetland, This will be removed and the trail aligned on the edge. The trail will be constructed nearly at grade, so slopes and impacts have been minimized. Minnesota Interagency Water Resource Application Form February 2014 Page 8 of 13 Off -Site ARematives. An off-site alternatives analysis is not required for all permit applicat;ons. If you know that your proposal Will require an Indiv, dual permit (standard permit or letter of permission) from the U.S. Army Corps of Engineers, you may be required to provide an off-site alternatives analysis. The alternatives analysis Is not required for a complete appl?cation but must be orovided dur;ng the review process in order for the Corps to complete the evaluation of your application and reach a final decision,. Applicants with questions about when an off-site alternatives analysis is required should contact their Corps Project Manager. NA Miinesote Interagency Water Resource Application Form February 2014 Page 9 of 13 Project Name and/or Number: Attachment D Replacement/Compensatory Mitigation Complete this part if your application involves wetland replacement/compensatory mitigation not associated with the local road wetland replacement program. Applicants should consult Corps mitigation guidelines and WCA rules for requirements. Replacement/Compensatory Mitigation via Wetland Banking. Complete this section if you are proposing to use credits from an existing wetland bank (with an account number in the State wetland banking system) for all or part of your replacement/compensatory mitigation requirements. Wetland Bank Major County Account # Watershed # Bank Service Area # Credit Type Number of Credits (if applicable) 1375 Carver 19 7 SWC 0.10 Applicants should attach documentation indicating that they have contacted the wetland bank account owner and reached at least a tentative agreement to utilize the identified credits for the project. This documentation could be a signed purchase agreement, signed application for withdrawal of credits or some other correspondence indicating an agreement between the applicant and the bank owner. However, applicants are advised not to enter into a binding agreement to purchase credits until the mitigation plan is approved by the Corps and LGU. Project -Specific Replacement/Permittee Responsible Mitigation. Complete this section if you are proposing to pursue actions (restoration, creation, preservation, etc.) to generate wetland replacement/compensatory mitigation credits for this proposed project. Corps Mitigation WCA Action Eligible for Credit' Compensation Technique Credit % Credits Major Acres Requested Anticipated 3 County Watershed # Bank Service Area # 'Refer to the name and subpart number in MN Rule 9420.0526. Refer to the technique listed in St. Paul District Policy for Wetland Compensatory Mitigation in Minnesota. 3 I WCA and Corps crediting differs, then enter both numbers and distinguish which is Corps and which is WCA. Explain how each proposed action or technique will be completed (e.g. wetland hydrology will be restored by breaking the tile......) and how the proposal meets the crediting criteria associated with it. Applicants should refer to the Corps mitigation policy language, WCA rule language, and all associated Corps and WCA guidance related to the action or technique: Attach a site location map, soils map, recent aerial photograph, and any other maps to show the location and other relevant features of each wetland replacement/mitigation site. Discuss in detail existing vegetation, existing landscape features, land use (on and surrounding the site), existing soils, drainage systems (if present), and water sources and movement. Include a topographic map showing key features related to hydrology and water flow (inlets, outlets, ditches, pumps, etc.): Minnesota Interagency Water Resource Application Form February 2014 Page 10 of 13 Project Name and/or Number: Attach a map of the existing aquatic resources, associated delineation report, and any documentation of regulatory review or approval. Discuss as necessary: For actions involving construction activities, attach construction plans and specifications with all relevant details. Discuss and provide documentation of a hydrologic and hydraulic analysis of the site to define existing conditions, predict project outcomes, identify specific project performance standards and avoid adverse offsite impacts. Plans and specifications should be prepared by a licensed engineer following standard engineering practices. Discuss anticipated construction sequence and timing: For projects involving vegetation restoration, provide a vegetation establishment plan that includes information on site preparation, seed mixes and plant materials, seeding/planting plan (attach seeding/planting zone map), planting/seeding methods, vegetation maintenance, and an anticipated schedule of activities: For projects involving construction or vegetation restoration, Identify and discuss goals and specific outcomes that can be determined for credit allocation. Provide a proposed credit allocation table tied to outcomes: Provide a five-year monitoring plan to address project outcomes and credit allocation: Discuss and provide evidence of ownership or rights to conduct wetland replacement/mitigation on each site: Quantify all proposed wetland credits and compare to wetland impacts to identify a proposed wetland replacement ratio. Discuss how this replacement ratio is consistent with Corps and WCA requirements: By signature below, the applicant attests to the following (only required if application involves project-specific/permittee responsible replacement): • All proposed replacement wetlands were not: • Previously restored or created under a prior approved replacement plan or permit • Drained or filled under an exemption during the previous 10 years • Restored with financial assistance from public conservation programs • Restored using private funds, other than landowner funds, unless the funds 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. • 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 will be provided to guarantee successful completion of the wetland 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 wetlands) will be located and submit proof of such recording to the LGU and the Corps. Applicant or Representative: Title: Signature: ✓44 B�_- Date: Minnesota Interagency Water Resource Application Form February 2014 Page 11 of 13 Appendix A — Figures •• I E fNilm p ✓ i11 9 I` j L ar aa. •c, _-__________—____—_—____�_—___ Y r— Y"a _________ __ — _ i J t' • LnR'ae.L. w� P .. i•Yx,r kiM ., r. 1El. rie p, C li __ __ wr n.M1 Ra D. I: <) O Fq or•� 0.A - M lnnew¢aht�gl'9,o,µ ;1 I b t I i c+ ewe I I ------------------------ j ^� GS rces� Esn, DeLowe,NAViEQ, US,'IIntermap, iPC, NRCAN. Esn Japan. ETI, Esri China (Meng Kong), Esn (Thailand), TomTom. 2013 Figure 1. Project Location Legend Lake Minnewashta Regional Park ProjectLimits City Limits WS8 Chanhassen, Minnesota - lLakeMinnewashta Cinch =2,000 feet �1 —{ F - --- - Excelsior;, T ----+� '' _-_ '- .y -- -- � fii � -� ,�•:y-'fir .�� - _ � IIIUtR ashlS / � r ,i ` II � � - •�. ry s r __ ----------- BEN NEPi1xrn r — -- -- --- - � � i' EA -:E'ER IS 4! , �Y / \'� ��...� Ma Fp,ona� Pa`E��F • C H,i] � fi.� � S � � • J. kO mv ` , •C �.. . ( nen O 1 I 94, ;�� v10 J O �+j `f+''i"" _ I CopyNgh t O 2011 NaGoflal Geographic Spoety, i -cubed r •i r Figure 1a. USGS Map tomen — III •r Lake Minnewashta Regional Park � Project Limits �_ 'I City Limits y/SB Chanhassen, Minnesota -- Lake Minnewashta Cinch =2,000 feet z u asosreio� .wsimasosro�u a-.wan•w� - C Si J c a u eM,46 Z OZOZOZOZOd ��O�p �l 1ae�sl .p / fr•�` . e-.;., / i r'. F* c r �a �Fz � any , ,u ¢ O ¢ a f' V) m Z+ e. COM d ON un m c C p Z 3 W a ,u cc CD C Z C N N � Lmn c t 7 Y W - __ �J V O f' V) m Z+ COM ON un m c C p Z 3 cc CD C Z C N N � Lmn c t 7 Y W - __ �J V MB MP MK - 4w se Si KB KD2 L n, &D2 `✓ T6 is :. D2 MKK MP ,y Figure 3. Carver Count Soil Survey Carver County Soil Survey DprWea U.K. Lake Minnewashta Regional Park NOr Hyddc Chanhassen, Minnesota Hydre WJB 1 inch = 500 feet ,e - f 1 MK - 4w se Si KB KD2 L n, &D2 `✓ T6 is :. D2 MKK MP ,y Figure 3. Carver Count Soil Survey Carver County Soil Survey DprWea U.K. Lake Minnewashta Regional Park NOr Hyddc Chanhassen, Minnesota Hydre WJB 1 inch = 500 feet ,e - 3 •may . ` .. L z i t �`• '� � r`r � E F T;;'s 3 f a it i t �`• '� � r`r � E F T;;'s 3 f a LOS3NNIW'A1Nnoo M3 im i33MUd MM3AOU lNWd VLOL UUVd lVNMM VL SVA NNIW 3M OJ/II ■K-11 T5 r � _ VIOS3NNIW 'A1Nnoo M3AldV a�3roaa aN3N3noaewr nava noz Navd WNWVIHW 13NNIN 3a a F 1 1 E 1 1 e , I Z OV 1 S, 1 0 3� a VIM3NNIN'AlNnoo a3ASVO--..---- 103VONd1N3MMONdNIMVVdVLOi N NNVd WWO103V VLNSVMNNNY 3NV _v—v' Qh� i Y '�. �-. �': - \543'. • � . 1 \ � N F 99, W� ° I i =96 656 I � 1 I I T �� � • Ia 555 J ESE 1 e � • E \ I � • S �• 'Y �• I Y e s �a oc \ � I £1 � Z y • � - \ 46 2� r6 61ySy 3 Z;7 w Hy,it h IOS3NNIW'AIN000 N3ANVO I ....4-- 103road 1N3w3AOUMN MNVd t10Z MNVd 3VNON33N VIMVM NNIN 3MV3 II- _ _ _ j2R3ooa E••�s '{r ' II I 3yy � 4• e LL W p �W O p} p Z 13316 335 � 4• e LL W p �W O p} p Z 13316 335 ----ItllOS3NNIW'AlNf1OOM3AMtlO 103r0ud IN3MWbdWl A Vd Mt ��m•�•�.• MVVd WN0103U V1NSVM NNIW 3N /I I 3 t 8f r/v/� � s � I ` Z� F � 1 I f I 1 I 1 LL 4� I mg ` I(/ I i LL l A) a M�1l vioS3NNIW'A1Nnoo N3mvo --- -----_ 193roN 1N3W3AOWWlN Verloz 8 �I -- ee — _ NaraI 0103a tl1NSVM NNIW 3NVl _ �w • u i s =3 r w � fel �98�_�- '✓� V `Ss bm 56 • _ I • W ' q 95F �' \ \ \ _ tis _ � r I• �♦ - \ f56 1 1 1 � I i 1 •IVT / 1 o I I LL F t �� w... v Appendix B — Plan set Appendix C — NPDES Permit Minnesota Pollution Control Agency Coverage Card Construction Stormwater National Pollutant Discharge Elimination System/State Disposal System General Permit MNR100001 The Construction site identified below is covered under the National Pollutant Discharge Elimination System/State Disposal System General Permit MNR100001 and is authorized by the Minnesota Pollution Control Agency (MPCA) to discharge stormwater associated with construction activities. Permit ID Number: C00038580 Owner: Carver County General Contractor: Carver County Project Name: Lake Minnewashta Regional Park Improveme CSW Permit Coverage Date: 7/17/2014 If you have questions regarding the stormwater program for construction activity, please access the MPCA Stormwater website at http:www.pca.state.mn.us/stormwater, or call the Construction Stormwater Program at 651-757-2119 or toll free at 800-657-3804. Appendix D — Supporting Stormwater Management Analysis 0 �5 t , .f i$ r' F r ' �.♦M "Oct 0 �5 t , .f i$ A 0 (n NW LL W 03 ¢ F O 0- 0 I LL / Q W / IL J / LLJ W2= jr /O \11111 I \tI / W N Q l� �ww x /a Qr O m VIOS3NNIW'A.LNno3 b3Asvo--.--.--- 103MUd1N3N3AOHdNlNNVdslat NbVd WN0103N VINSVM NNIN 3XY ml I ILII j II I ' SII 1 11 I 9 6tlagng Boat launch los - CONCRETE PAD FOR PORTABLE RESTROOMS e(r9navetl _ T PREP' AREA 10R ------ \ \t 8 VEHICLE STALLS P{i0i0$ 2F Fpl HUNCH WITH \ \ g \ as\ IADING DOCK J 5S 8R >� ,, RECYCLING COMPOST/TRASH / , ✓% BIN AREA 1� 0/ i P BO' X 1TIV TIE DOWM AREA 35 VEHICLE / TRAILER STALLS .fes•' _ - ST� Subcat Reach on Link Routing Diagram for Boat Landing Prepared by HP, Printed 7/7/2014 HycroCAD®10.00 s/n 00883 0 2012 HycroCAD Software Solutions LLC Boat Landing Prepared by HP Printed 7/7/2014 HydrOCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 1.276 98 (3S, 5S, 6S, 8S) 1.421 61 (3S, 5S, 6S, 10S) 1.297 61 >75% Grass cover, Good, HSG B (9S) 0.800 85 existing north parking lot (9S) 0.600 85 existing south parking lot (9S) 5.394 76 TOTAL AREA Boat Landing Type 1124 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paoe 3 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment3S: Runoff Area=0.396 ac 94.44% Impervious Runoff Depth>1.84" Tc --10.0 min CN=96 Runoff --1.10 cis 0.061 of Subcatchment5S: Runoff Area=1.030 ac 69.90% Impervious Runoff Depth>1.13" Tc=10.0 min CN=87 Runoff --1.92 ds 0.097 of Subcatchment6S: Runoff Area=0.309 ac 6.47% Impervious Runoff Depth>0.18" Tc=10.0 min CN=63 Runoff --0.05 cfs 0.005 at Subcatchment8S: Runoff Area=0.162 ac 100.00% Impervious Runoff Depth>2.02" Tc=10.0 min CN=98 Runoff --0.47 cfs 0.027 of Subcatchment9S: Existing Boat Launch Runoff Area=2.697 ac 0.00% Impervious Runoff Depth>0.45" Tc=10.0 min CN=73 Runoff --1.88 cfs 0.102 of SubcatchmentlOS: north boat launch - Runoff Area=0.800 ac 0.00% Impervious Runoff Depth>0.14" Tc=10.0 min CN=61 Runoff --0.07 cfs 0.009 of Reach 8R: swale Avg. Flow Depth=0.07' Max Vel=2.05 fps Inflow --0.49 cfs 0.024 of n=0.030 L=230.0' S=0.0674 T Capacity --306.66 cfs Outflow --0.42 cfs 0.024 of Reach 10R: to Minnewashta PROPOSED Inflow=1.03 cfs 0.119 of Outflow=1.03 cfs 0.119 of Pond 1 P: Rain Garden Peak Elev=965.11' Storage=0.033 of Inflow=1.10 cfs 0.061 of Discarded=0.01 cfs 0.006 of Primary --0.49 cfs 0.024 of Outflow --0.50 cfs 0.030 of Pond 2P: Rain Garden w/ Yard Drain Peak Elev=949.69' Storage=0.014 of Inflow=1.92 cfs 0.121 of Discarded=0.00 cfs 0.003 of Primary=1.89 cfs 0.106 of Secondary=0.00 cfs 0.000 of Outflow --1.90 cfs 0.109 of Pond 4P: Stormwater Basin Peak Elev=946.51' Storage=0.060 of Inflow=1.94 cfs 0.110 of Primary=0.98 cfs 0.106 of Secondary --0.00 cfs 0.000 of Outflow=0.98 cfs 0.106 of Pond 7P: Peak Elev=952.51' Storage=0.017 of Inflow --0.47 cfs 0.027 of Discarded=0.01 cfs 0.006 of Primary --O.05 cfs 0.004 of Outflow=0.06 cfs 0.010 of Total Runoff Area = 5.394 ac Runoff Volume = 0.300 of Average Runoff Depth = 0.67" 76.34% Pervious = 4.118 ac 23.66% Impervious = 1.276 ac Boat Landing Type 1124 -hr lyrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCADJ 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 4 Summary for Subcatchment 3S: Runoff = 1.10 cfs @ 12.01 hrs, Volume= 0.061 af, Depth> 1.84" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr lyr Rainfall=2.40" Area (ac) CN Description ' 0.374 98 0.396 96 Weighted Average 0.022 5.56% Pervious Area 0.374 94.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3S: Hydrograph — RunoR Type II 24 -hr 1yr Rainfall=2.40" Runoff Area=0.396 ac r I I Runoff Volume=0.061 of Runoff Depth>1.84" I I I Tc=10.0 min CN=96 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Time (hours) Boat Landing Prepared by HP Type 11 24 -hr 1 yr Rainfall=2.40" Printed 7/7/2014 Summary for Subcatchment 5S: Runoff = 1.92 cfs @ 12.02 hrs, Volume= 0.097 af, Depth> 1.13" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1yr Rainfall=2.40" Area (ac) CN Description 0.720 98 0.310 61 1.030 87 Weighted Average 0.310 30.10% Pervious Area 0.720 69.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Hydrograph — Runofr Type II 24 -hr 1yr Rainfall=2.40" Runoff Area=1.030 ac a I I I Runoff Volume=0.097 of Runoff Depth>1.13" LL Tc=10.0 min I I I CN=87 Time (hours) Boat Landing Type 1124 -hr 1yrRainfa11=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 6 Summary for Subcatchment 6S: Runoff = 0.05 cfs @ 12.07 hrs, Volume= 0.005 af, Depth> 0.18" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1yr Rainfall=2.40" Area (ac) CN Description + 0.020 98 + n non Al 0.309 63 Weighted Average 0.289 93.53% Pervious Area 0.020 6.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 6S: Hydrograph — RurwM 0.045 Type II 24 -hr 004 1yr Rainfall=2.40" Runoff Area=0.309 ac 0.035 Runoff Volume=0.005 of 0.03 -Runoff Depth>0.18" 0.025 Tc=10.0 min 0.02 CN=63 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HvdroCAD Software Solutions LLC Page 7 Summary for Subcatchment 8S: Runoff = 0.47 cfs @ 12.01 hrs, Volume= 0.027 af, Depth> 2.02" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type 1124 -hr 1 yr Rainfall=2.40" Area (ac) CN Description 0.162 98 0.162 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 8S: Hydrograph —Runoff v.ro 0.44 Type II 24 -hr OA2 1yr Rainfall=2.40" 00.4 38 0.36 0.34 Runoff Area=0.162 ac 0.32 0.3 Runoff Volume=0.027 of 0.28 3 0.26 Runoff Depth>2.02" LL 0.24 0.22 0.2 Tc=10.0 min 0.18 0.16 CN=98 0.14 0.12 Time (hours) Boat Landing Type 11 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 9S: Existing Boat Launch Runoff = 1.88 cfs @ 12.04 hrs, Volume= 0.102 af, Depth> 0.45" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type 11 24 -hr lyr Rainfall=2.40" Area (ac) CN Description ' 0.600 85 existing south parking lot 1.297 61 >75% Grass cover, Good, HSG B " 0.800 85 existing north parking lot 2.697 73 Weighted Average 2.697 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 10.0 Direct Entry, Subcatchment 9S: Existing Boat Launch Hydrograph 2 1.88 cfe Type II 24 -hr 1yr Rainfall=2.40" Runoff Area=2.697 ac Runoff Volume=0.102 of Runoff Depth>0.45" Tc=10.0 min CN=73 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — Runoft Boat Landing Type 1124 -hr lyrRainfall=2.40" Prepared by HP Printed 7/7/2014 H droCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 9 Summary for Subcatchment 10S: north boat launch - gravel removed Runoff = 0.07 cfs @ 12.08 hrs, Volume= 0.009 af, Depth> 0.14" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 y Rainfall=2.40" Area (ac) CN Description ' 0.800 61 0.800 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 10S: north boat launch - gravel removed Hydrograph — Rurwff 0.065 Type 11 24 -hr 006 1yr Rainfall=2.40" 0.055 Runoff Area=0.800 ac 0.05 F 0.045 Runoff Volume=0.009 of 0.04 Runoff Depth>0.14" LL 0.035 Tc=10.0 min 0.03 CN=61 11 12 13 14 Tlme (hours) Boat Landing Type 11 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 10 Summary for Reach 8R: swale Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 0.72" for 1 y event Inflow = 0.49 cfs @ 12.16 hrs, Volume= 0.024 of Outflow = 0.42 cfs @ 12.23 hrs, Volume= 0.024 af, Atten= 15%, Lag= 4.3 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 2.05 fps, Min. Travel Time= 1.9 min Avg. Velocity = 0.98 fps, Avg. Travel Time= 3.9 min Peak Storage= 51 cf @ 12.20 hrs Average Depth at Peak Storage= 0.07' Bank -Full Depth= 2.00' Flow Area= 22.0 sf, Capacity= 306.66 cfs 3.00' x 2.00' deep channel, n= 0.030 Side Slope Z -value= 4.0'P Top Width= 19.00' Length= 230.0' Slope= 0.0674'/' Inlet Invert= 965.50', Outlet Invert= 950.00' .3 Reach 8R: swale Hydrograph 0.45 0.42 ds. s Inflow Area=0.396 ac 0.4Avg. Flow Depth=0.07' 0.35 Max Vel=2.05 fps pn=0.030 � 0.3 LL 0.25 L=230.0' 02 S=0.0674 T 0.151Capacity=306.66 cfs 6 7 8 9 10 11 12 13 14 15 Time (hours) InBow Outflow Boat Landing Prepared by HP Type 11 24 -hr 1 yr Rainfall=2.40" Printed 7/7/2014 Summary for Reach 1OR: to Minnewashta PROPOSED Inflow Area = 2.697 ac, 47.31% Impervious, Inflow Depth > 0.53" for lyr event Inflow = 1.03 ds @ 12.20 hrs, Volume= 0.119 of Outflow = 1.03 ds @ 12.20 hrs, Volume= 0.119 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach 10R: to Minnewashta PROPOSED Hydrograph hiflav Outflow Inflow Area=2.697 ac Time (hours) Boat Landing Type 1l 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 stn 00883 © 2012 HydroCAD Software Solutions LLC Page 12 Summary for Pond 1 P: Rain Garden Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 1.84" for lyr event Inflow = 1.10 cfs @ 12.01 hrs, Volume= 0.061 of Outflow = 0.50 cfs @ 12.16 hrs, Volume= 0.030 af, Atten= 54%, Lag= 9.2 min Discarded = 0.01 cfs @ 12.16 hrs, Volume= 0.006 of Primary = 0.49 cfs @ 12.16 hrs, Volume= 0.024 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 965.11' @ 12.16 hrs Surf.Area= 0.023 ac Storage= 0.033 of Plug -Flow detention time= 160.7 min calculated for 0.030 of (50% of inflow) Center -of -Mass det. time= 77.2 min ( 828.3 - 751.1 ) Volume Invert Avail Storage Storage Description #1 963.00' 0.059 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 963.00 0.009 0.000 0.000 964.00 0.015 0.012 0.012 965.00 0.022 0.018 0.030 966.00 0.035 0.028 0.059 Device Routing Invert Outlet Devices #1 Primary 965.00' 5.0' long x 2.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2 Discarded 963.00' 0.300 in/hr ExFltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.16 hrs HW=965.11' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.46 cfs @ 12.16 hrs HW=965.11' (Free Discharge) L1=Broad-Crested Rectangular Weir(Weir Controls 0.46 cfs @ 0.84 fps) Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 13 Pond 1P: Rain Garden Hydrograph Time (hours) — Inflow Outfim — Discarded Pdmary Boat Landing Type /l 24 -hr 1yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD@ 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 14 Summary for Pond 2P: Rain Garden w/ Yard Drain Inflow Area = 1.426 ac, 76.72% Impervious, Inflow Depth > 1.02" for lyr event Inflow = 1.92 cfs @ 12.02 hrs, Volume= 0.121 of Outflow = 1.90 cfs @ 12.03 hrs, Volume= 0.109 af, Atten= 1 %, Lag= 0.8 min Discarded = 0.00 cfs @ 12.03 hrs, Volume= 0.003 of Primary = 1.89 cfs @ 12.03 hrs, Volume= 0.106 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 949.69' @ 12.03 hrs Surf.Area= 0.014 ac Storage= 0.014 of Plug -Flow detention time= 47.0 min calculated for 0.109 of (90% of inflow) Center -of -Mass det. time= 14.1 min ( 811.6 - 797.5 ) Volume Invert Avail Storage Storage Description #1 948.00' 0.039 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 948.00 0.004 0.000 0.000 949.00 0.009 0.006 0.006 950.00 0.016 0.012 0.019 951.00 0.024 0.020 0.039 Device Routing Invert Outlet Devices #1 Primary 946.00' 15.0" Round Culvert L= 71.0' Ke= 0.500 Inlet / Outlet Invert= 946.00'1945.00' S= 0.0141 T Cc= 0.900 n= 0.014, Flow Area= 1.23 sf #2 Secondary 950.30' 20.0' long x 20.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #3 Device 1 949.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Discarded 948.00' 0.300 in/hr Exflltration over Surface area Qiscarded OutFlow Max=0.00 cfs @ 12.03 hrs HW=949.69' (Free Discharge) z-4=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=1.84 cfs @ 12.03 hrs HW=949.69' (Free Discharge) LCulvert (Passes 1.84 cfs of 9.87 cfs potential flow) 3=Orifice/Grate (Weir Controls 1.84 cfs @ 1.41 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=948.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 11 24 -hr 1 yr Rainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 15 Pond 2P: Rain Garden w/ Yard Drain Hydrograph Storage=0.014 of 12 13 14 15 16 17 18 19 20 Time (hours) —Inflow — Oudlow Inflow Area=1.426 ac — Discarded - Se^ d — econtlary Peak Elev=949.69' Storage=0.014 of 12 13 14 15 16 17 18 19 20 Time (hours) Boat Landing Type 1124 -hr 1yrRainfall=2.40" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 0 2012 HydroCAD Software Solutions LLC Page 16 Summary for Pond 4P: Stormwater Basin Inflow Area = 1.735 ac, 64.21% Impervious, Inflow Depth > 0.76" for lyr event Inflow = 1.94 cfs @ 12.03 hrs, Volume= 0.110 of Outflow = 0.98 cfs @ 12.22 hrs, Volume= 0.106 af, Aften= 49%, Lag= 11.1 min Primary = 0.98 cfs @ 12.22 hrs, Volume= 0.106 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 946.00' Surf.Area= 0.045 ac Storage= 0.034 of Peak Elev= 946.51' @ 12.22 hrs Surf.Area= 0.056 ac Storage= 0.060 of (0.026 of above start) Plug -Flow detention time= 143.7 min calculated for 0.072 of (65% of inflow) Center -of -Mass det. time= 21.5 min ( 833.0 - 811.5 ) Volume Invert Avail Storage Storage Description #1 945.00' 0.245 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 945.00 0.023 0.000 0.000 946.00 0.045 0.034 0.034 947.00 0.066 0.055 0.089 948.00 0.078 0.072 0.161 949.00 0.090 0.084 0.245 Device Routing Invert Outlet Devices #1 Primary 946.00' 12.0" Round Culvert L= 100.0' Ke= 0.500 Inlet/ Outlet Invert= 946.00'/ 945.00' S= 0.0100 'P Cc= 0.900 n=0.013, Flow Area= 0.79 sf #2 Secondary 948.50' 10.0' long x 10.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow, Max=0.98 cfs @ 12.22 hrs HW=946.51' (Free Discharge) 't--1 =Culvert (Inlet Controls 0.98 cfs @ 2.43 fps) SecondaryOutFlow Max=0.00 cfs @ 5.00 hrs HW=946.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 1124 -hr 1yrRainfal1=2.40" Prepared by HP Printed 7/7/2014 HydrOCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 17 Pond 4P: Stormwater Basin Hydrograph — InOow — Outflow Inflow Area=1.735 ac - Second Secondary Peak Elev=946.51' Storage=0.060 of 1 12 13 14 Time (hours) Boat Landing Type 1124 -hr 1yrRainfa11=2.40" Prepared by HP Printed 7/7/2014 HydroCAD@ 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 18 Summary for Pond 7P: Inflow Area = 0.162 ac,100.00% Impervious, Inflow Depth > 2.02" for lyr event Inflow = 0.47 cfs @ 12.01 hrs, Volume= 0.027 of Outflow = 0.06 cfs @ 12.39 hrs, Volume= 0.010 af, Atten= 87%, Lag= 23.0 min Discarded = 0.01 cfs @ 12.39 hrs, Volume= 0.006 of Primary = 0.05 cfs @ 12.39 hrs, Volume= 0.004 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 952.51' @ 12.39 hrs Surf.Area= 0.026 ac Storage= 0.017 of Plug -Flow detention time= 219.5 min calculated for 0.010 of (38% of inflow) Center -of -Mass det. time= 111.1 min ( 850.2 - 739.2 ) Volume Invert Avail Storage Storage Description #1 951.00' 0.089 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 951.00 0.005 0.000 0.000 952.00 0.011 0.008 0.008 953.00 0.040 0.025 0.033 954.00 0.070 0.055 0.089 Device Routing Invert Outlet Devices #1 Primary 952.50' 10.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 951.00' 0.300 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.39 hrs HW=952.51' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.04 cfs @ 12.39 hrs HW=952.51' (Free Discharge) L1=13road-Crested Rectangular Weir(Weir Controls 0.04 cfs @ 0.27 fps) Boat Landing Prepared by HP Pond 7P: Hydrograph Type 1124 -hr 1 yr Rainfall=2.40" Printed 7/7/2014 Time (hours) — Inflow — Outflow — Discarded — Pnmary Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 20 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment3S: Runoff Area=0.396 ac 94.44% Impervious Runoff Depth>3.48" Tc=10.0 min CN=96 Runoff --2.01 cfs 0.115 of Subcatchment5S: Runoff Area=1.030 ac 69.90% Impervious Runoff Depth>2.63" Tc=10.0 min CN=87 Runoff --4.31 cfs 0.226 of Subcatchment6S: Runoff Area=0.309 ac 6.47% Impervious Runoff Depth>0.91" Tc=10.0 min CN=63 Runoff --0.45 cfs 0.024 of Subcatchment8S: Runoff Area=0.162 ac 100.00% Impervious Runoff Depth>3.65" Tc=10.0 min CN=98 Runoff --0.84 cfs 0.049 at Subcatchment9S: Existing Boat Launch Runoff Area=2.697 ac 0.00% Impervious Runoff Depth>1.52" Tc --10.0 min CN=73 Runoff --6.79 cfs 0.342 of SubcatchmentlOS: north boat launch - Runoff Area=0.800 ac 0.00% Impervious Runoff Depth>0.81" Tc=10.0 min CN=61 Runoff=1.00 cfs 0.054 of Reach 8R: swale Avg. Flow Depth=0.16' Max Vel=3.35 fps Inflow=1.92 cfs 0.077 of n=0.030 L=230.0' S=0.0674'f Capacity --306.66 cfs Outflow --1.85 cfs 0.077 of Reach 10R: to Minnewashta PROPOSED Inflow=4.85 cfs 0.383 of Outflow --4.85 cfs 0.383 of Pond 1 P: Rain Garden Peak Elev=965.28' Storage=0.037 of Inflow --2.01 cfs 0.115 of Discarded=0.01 cfs 0.007 of Primary=1.92 cfs 0.077 of Outflow --1.93 cfs 0.084 of Pond 2P: Rain Garden w/ Yard Drain Peak Elev=949.91' Storage=0.018 of Inflow --5.98 cfs 0.303 of Discarded=0.00 cfs 0.004 of Primary --5.97 cfs 0.287 of Secondary=0.00 cfs 0.000 of Outflow --,5.98 cfs 0.291 of Pond 4P: Stormwater Basin Peak Elev=947.37' Storage=0.114 of Inflow=6.42 cfs 0.311 of Primary=3.42 cfs 0.304 of Secondary --0.00 cfs 0.000 of Outflow=3.42 cfs 0.304 of Pond 7P: Peak Elev=952.60' Storage=0.020 of Inflow=0.84 cfs 0.049 of Discarded=0.01 cfs 0.007 of Primary --0.79 cfs 0.025 of Outflow=0.79 cfs 0.032 of Total Runoff Area = 5.394 ac Runoff Volume = 0.809 of Average Runoff Depth = 1.80" 76.34% Pervious = 4.118 ac 23.66% Impervious = 1.276 ac Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 21 Summary for Subcatchment 3S: Runoff = 2.01 ds @ 12.01 hrs, Volume= 0.115 af, Depth> 3.48" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Descriotion 0.374 98 0.022 61 0.396 96 Weighted Average 0.022 5.56% Pervious Area 0.374 94.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3S: Hydrograph 2.01 cfs 2 Type II 24 -hr 10yr Rainfall=4.20" Runoff Area=0.396 ac Runoff Volume=0.115 of Runoff Depth>3.48" Tc=10.0 min CN=96 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) — RunoR Boat Landing Type 1124 -hr 10yrRainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 22 Summary for Subcatchment 5S: Runoff = 4.31 cfs @ 12.01 hrs, Volume= 0.226 af, Depth> 2.63" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description 0.720 98 �4A M, 1.030 87 Weighted Average 0.310 30.10% Pervious Area 0.720 69.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Hydrograph Type II 24 -hr 10yr Rainfall=4.20" Runoff Area=1.030 ac Runoff Volume=0.226 of Runoff Depth>2.63rr Tc=10.0 min 15 16 17 rime (hours) CN=87 — RunoR Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paoe 23 Summary for Subcatchment 6S: Runoff = 0.45 cis @ 12.03 hrs, Volume= 0.024 af, Depth> 0.91" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description 0.020 98 0.289 61 0.309 63 Weighted Average 0.289 93.53% Pervious Area 0.020 6.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 6S: Hydrograph 0.42 Type II 24 -hr 0.4 0.36 10yr Rainfall=4.20" 0.34 0.32 Runoff Area=0.309 ac °'3 ,p 0.28 Runoff Volume=0.024 of = 0.26 0.24 Runoff Depth>0.91" M 0.22 0.2 Tc=10.0 min 0.18 0.16 CN=63 0. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — RunoB Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 24 Summary for Subcatchment 8S: Runoff = 0.84 cfs @ 12.01 hrs, Volume= 0.049 af, Depth> 3.65" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description 0.162 98 0.162 100.00% Impervious Area Tc Length Slope Velocity Capacity Description 10.0 Direct Entry, Subcatchment 8S: Hydrograph — RunoB 0.8 Type II 24 -hr 0.75 0.7 10yr Rainfall=4.20" 0.66 0.6 Runoff Area=0.162 ac 0.55 Runoff Volume=0.049 of 0.5 0.45 Runoff Depth>3.65" OA Tc=10.0 min 0.35 0.3 CN=98 0.25 0.2 0.15 0.1 0.05 0 5 6 7 8 9 10 11 12 13 74 15 16 17 18 19 Time (hours) Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 @ 2012 HydroCAD Software Solutions LLC Page 25 Summary for Subcatchment 9S: Existing Boat Launch Runoff = 6.79 cfs @ 12.02 hrs, Volume= 0.342 af, Depth> 1.52" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description 0.600 85 existing south parking lot 1.297 61 >75% Grass cover, Good, HSG B ' 0.800 85 existing north parking lot 2.697 73 Weighted Average 2.697 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: Existing Boat Launch Hydrograph 7 6.79 crs Type II 24 -hr 10yr Rainfall=4.20" 5 Runoff Area=2.697 ac Runoff Volume=0.342 of Runoff Depth>1.52" 3 Tc=10.0 min CN=73 2 1 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — RuW Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paoe 26 Summary for Subcatchment 10S: north boat launch - gravel removed Runoff = 1.00 cfs @ 12.04 hrs, Volume= 0.054 af, Depth> 0.81" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10yr Rainfall=4.20" Area (ac) CN Description * 0.800 61 0.800 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 10.0 Direct Entry, Subcatchment 10S: north boat launch - gravel removed Hydrograph Type II 24 -hr 10yr Rainfall=4.20" Runoff Area=0.800 ac Runoff Volume=0.054 of Runoff Depth>0.81" Tc=10.0 min 15 16 17 Time (hours) CN=61 — RunoN Boat Landing Prepared by HP Type 1124 -hr 10yr Rainfall=4.20" Printed 7/7/2014 Summary for Reach 8R: swale Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 2.35" for 10yr event Inflow = 1.92 cfs @ 12.04 hrs, Volume= 0.077 of Outflow = 1.85 cfs @ 12.07 hrs, Volume= 0.077 af, Atten= 4%, Lag= 1.9 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 3.35 fps, Min. Travel Time= 1.1 min Avg. Velocity = 1.10 fps, Avg. Travel Time= 3.5 min Peak Storage= 131 cf @ 12.05 hrs Average Depth at Peak Storage= 0.16' Bank -Full Depth= 2.00' Flow Area= 22.0 sf, Capacity= 306.66 cfs 3.00' x 2.00' deep channel, n= 0.030 Side Slope Z -value= 4.0T Top Width= 19.00' Length= 230.0' Slope= 0.06747 Inlet Invert= 965.50'. Outlet Invert= 950.00' Reach 8R: swale Hydrograph 2 1.85 cfs LCapacity=306.66cfs 96 ac =0.16' 5 fps 0.030 230.0' 674 '/' 6 cfs 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) IMlow outflow Boat Landing Type// 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 28 Summary for Reach 1 OR: to Minnewashta PROPOSED Inflow Area = 2.697 ac, 47.31 % Impervious, Inflow Depth > 1.71" for 10yr event Inflow = 4.85 cfs @ 12.08 hrs, Volume= 0.383 of Outflow = 4.85 ds @ 12.08 hrs, Volume= 0.383 A Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach 10R: to Minnewashta PROPOSED Hydrograph 5 4.85 cfs Inflow Area=2.697 ac 4- 3- 2- 5 325 fi 7 A 9 1011 12 13 14 15 16 17 18 19 2( Time (hours) Inflow Outflow Boat Landing Type// 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HYdroCAD Software Solutions LLC Paae 29 Summary for Pond 1 P: Rain Garden Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 3.48" for 10yr event Inflow = 2.01 cfs @ 12.01 hrs, Volume= 0.115 of Outflow = 1.93 cis @ 12.04 hrs, Volume= 0.084 af, Atten= 4%, Lag= 1.8 min Discarded = 0.01 cfs @ 12.04 hrs, Volume= 0.007 of Primary = 1.92 cfs @ 12.04 hrs, Volume= 0.077 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 965.28' @ 12.04 hrs Surf.Area= 0.026 ac Storage= 0.037 of Plug -Flow detention time= 110.6 min calculated for 0.084 of (73% of inflow) Center -of -Mass det. time= 49.3 min ( 790.5 - 741.2 ) Volume Invert Avail.Storage Storage Description #1 963.00' 0.059 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 963.00 0.009 0.000 0.000 964.00 0.015 0.012 0.012 965.00 0.022 0.018 0.030 966.00 0.035 0.028 0.059 Device Routing Invert Outlet Devices #1 Primary 965.00' 5.0' long x 2.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2 Discarded 963.00' 0.300 in/hr Exfiltration over Surface area Lsr-arded OutFlow Max=0.01 cls @ 12.04 hrs HW=965.28' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.88 cfs @ 12.04 hrs HW=965.28' (Free Discharge) 't1=Broad-Crested Rectangular Weir(Weir Controls 1.88 cfs @ 1.35 fps) Boat Landing Prepared by HP Pond 1P: Rain Garden Hydrograph Type 1124 -hr 10yr Rainfall=4.20" Printed 7/7/2014 Inflow Area=0.396 ac Peak Elev=965.28' Storage=0.037 of 12 13 14 rime )hours) Inflow Outflow — Discarded — Pnmary Boat Landing Prepared by HP Type 1124 -hr 10yr Rainfall=4.20" Printed 7/7/2014 Summary for Pond 213: Rain Garden w/ Yard Drain Inflow Area = 1.426 ac, 76.72% Impervious, Inflow Depth > 2.55" for 10yr event Inflow = 5.98 cfs @ 12.03 hrs, Volume= 0.303 of Outflow = 5.98 cfs @ 12.04 hrs, Volume= 0.291 A Atten= 0%, Lag= 0.6 min Discarded = 0.00 cfs @ 12.04 hrs, Volume= 0.004 of Primary = 5.97 cfs @ 12.04 hrs, Volume= 0.287 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 949.91' @ 12.04 hrs Surf.Area= 0.015 ac Storage= 0.018 of Plug -Flow detention time= 25.1 min calculated for 0.291 of (96% of inflow) Center -of -Mass det. time= 9.8 min ( 785.8 - 776.0 ) Volume Invert Avail.Storage Storage Description #1 948.00' 0.039 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 948.00 0.004 0.000 0.000 949.00 0.009 0.006 0.006 950.00 0.016 0.012 0.019 951.00 0.024 0.020 0.039 Device Routing Invert Outlet Devices #1 Primary 946.00' 15.0" Round Culvert L= 71.0' Ke= 0.500 Inlet / Outlet Invert= 946.00'/ 945.00' S= 0.0141 T Cc= 0.900 n= 0.014, Flow Area= 1.23 sf #2 Secondary 950.30' 20.0' long x 20.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #3 Device 1 949.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Discarded 948.00' 0.300 in/hr Exfiltration over Surface area iscarded OutFlow Max=0.00 cfs @ 12.04 hrs HW=949.90' (Free Discharge) Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow, Max=5.84 cfs @ 12.04 hrs HW=949.90' (Free Discharge) L7=Cuivert (Passes 5.84 cfs of 10.17 cfs potential flow) t3=Orifice/Grate (Weir Controls 5.84 cfs @ 2.07 fps) te2 ,Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=948.00' (Free Discharge) =Broad -Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 11 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAM 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 32 Pond 2P: Rain Garden wl Yard Drain Hydrograph 1 12 13 14 15 16 17 18 Time (hours) — Inflow — Oudiow Inflow Area=1.426 ac — Dis rded -Pse�ary Peak Elev=949.91' Storage=0.018 of 1 12 13 14 15 16 17 18 Time (hours) Boat Landing Prepared by HP Type 1124 -hr 10yr Rainfall=4.20" Printed 7/7/2014 Summary for Pond 4P: Stormwater Basin Inflow Area = 1.735 ac, 64.21% Impervious, Inflow Depth > 2.15" for 10yr event Inflow = 6.42 cfs @ 12.04 hrs, Volume= 0.311 of Outflow = 3.42 cfs @ 12.18 hrs, Volume= 0.304 af, Atten= 47%, Lag= 8.4 min Primary = 3.42 cfs @ 12.18 hrs, Volume= 0.304 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 946.00' Surf.Area= 0.045 ac Storage= 0.034 of Peak Elev= 947.37' @ 12.17 hrs Surf.Area= 0.070 ac Storage= 0.114 of (0.080 of above start) Plug -Flow detention time= 68.3 min calculated for 0.270 of (87% of inflow) Center -of -Mass det. time= 16.0 min ( 804.1 - 788.1 ) Volume _ Invert Avail.Storage Storage Description #1 945.00' 0.245 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 945.00 0.023 0.000 0.000 946.00 0.045 0.034 0.034 947.00 0.066 0.055 0.089 948.00 0.078 0.072 0.161 949.00 0.090 0.084 0.245 Device Routinq Invert Outlet Devices #1 Primary 946.00' 12.0" Round Culvert L= 100.0' Ke= 0.500 Inlet/ Outlet Invert= 946.00'1945.00' S=0.0100? Cc= 0.900 n=0.013, Flow Area= 0.79 sf #2 Secondary 948.50' 10.0' long x 10.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=3.41 cfs @ 12.18 hrs HW=947.36' (Free Discharge) t1=Culvert (Barrel Controls 3.41 cfs @ 4.34 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=946.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Type 1124 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 34 Pond 4P: Stormwater Basin Hydrograph Inflow Cuffim Pnmary Inflow Area=1.735 ac -Secondary Peak Elev=947.37' Storage=0.114 of 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Time (hours) Boat Landing Prepared by HP Summary for Pond 7P: Type 1124 -hr 10yr Rainfall=4.20" Printed 7/7/2014 Inflow Area = 0.162 ac,100.00% Impervious, Inflow Depth > 3.65" for 10yr event Inflow = 0.84 cfs @ 12.01 hrs, Volume= 0.049 of Outflow = 0.79 cfs @ 12.05 hrs, Volume= 0.032 af, Atten= 5%, Lag= 2.4 min Discarded = 0.01 cfs @ 12.05 hrs, Volume= 0.007 of Primary = 0.79 cfs @ 12.05 hrs, Volume= 0.025 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 952.60' @ 12.05 hrs Surf.Area= 0.029 ac Storage= 0.020 of Plug -Flow detention time= 131.3 min calculated for 0.032 of (65% of inflow) Center -of -Mass det. time= 60.1 min ( 794.1 - 734.0 ) Volume Invert Avail.Storage Storage Description #1 951.00' 0.089 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 951.00 0.005 0.000 0.000 952.00 0.011 0.008 0.008 953.00 0.040 0.025 0.033 954.00 0.070 0.055 0.089 Device Routing Invert Outlet Devices #1 Primary 952.50' 10.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 951.00' 0.300 in/hr Exfiltration over Surface area LisOutFlow Max=0.01 cfs @ 12.05 hrs HW=952.60' (Free Discharge) =Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.77 cfs @ 12.05 hrs HW=952.60' (Free Discharge) 't-1 =Broad -Crested Rectangular Weir (Weir Controls 0.77 cfs @ 0.75 fps) Boat Landing Type 11 24 -hr 10yr Rainfall=4.20" Prepared by HP Printed 7/7/2014 HydrOCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 36 Pond 7P: Hydrograph 11 12 13 14 15 16 17 18 Time (hours) nflow —iOF=c — — Discarded Inflow Area=0.162 ac Peak Elev=952.60' Storage=0.020 of 11 12 13 14 15 16 17 18 Time (hours) Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 37 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR -20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment3S: Runoff Area=0.396 ac 94.44% Impervious Runoff Depth>5.12" Tc --10.0 min CN=96 Runoff --2.91 cfs 0.169 of SubcatchmentSS: Runoff Area=1.030 ac 69.90% Impervious Runoff Depth>4.23" Tc=10.0 min CN=87 Runoff --6.74 cfs 0.363 of Subcatchment6S: Runoff Area=0.309 ac 6.47% Impervious Runoff Depth>1.97" Tc --10.0 min CN=63 Runoff --1.00 cfs 0.051 of Subcatchment8S: Runoff Area=0.162 ac 100.00% Impervious Runoff Depth>5.27" Tc=10.0 min CN=98 Runoff=1.21 cfs 0.071 of Subcatchment9S: Existing Boat Launch Runoff Area=2.697 ac 0.00% Impervious Runoff Depth>2.84" Tc=10.0 min CN=73 Runoff-- 12.62 cfs 0.639 of Subcatchmentl OS: north boat launch - Runoff Area=0.800 ac 0.00% Impervious Runoff Depth>1.81" Tc=10.0 min CN=61 Runoff=2.38 cfs 0.121 of Reach 8R: swale Avg. Flow Depth=0.19' Max Vel=3.79 fps Inflow --2.80 cfs 0.131 of n=0.030 L=230.0' S=0.0674 'P Capacity=306.66cfs Outflow --2.71 cfs 0.131 of Reach 10R: to Minnewashta PROPOSED Inflow --7.43 cfs 0.687 of Outflow --7.43 cfs 0.687 of Pond 1 P: Rain Garden Peak Elev=965.36' Storage=0.039 of Inflow --2.91 cfs 0.169 of Discarded=0.01 cfs 0.007 of Primary --2.80 cfs 0.131 of Outflow --2.81 cfs 0.138 of Pond 2P: Rain Garden w/ Yard Drain Peak EIev=950.04' Storage=0.020 of Inflow=9.23 cfs 0.494 of Discarded=0.00 cfs 0.004 of Primary --9.22 cfs 0.477 of Secondary=0.00 cfs 0.000 of Outflow --9.22 cfs 0.482 of Pond 4P: Stormwater Basin Peak EIev=948.27' Storage=0.183 of Inflow --110.22 cfs 0.528 of Primary=4.41 cfs 0.520 of Secondary=0.00 cfs 0.000 of Outflow=4.41 cfs 0.520 of Pond 7P: Peak EIev=952.63' Storage=0.021 of Inflow=1.21 cfs 0.071 of Discarded=0.01 cfs 0.007 of Primary --1.15 cfs 0.047 of Outflow --1.16 cfs 0.054 of Total Runoff Area = 5.394 ac Runoff Volume = 1.413 of Average Runoff Depth = 3.14" 76.34% Pervious = 4.118 ac 23.66% Impervious = 1.276 ac Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 38 Summary for Subcatchment 3S: Runoff = 2.91 cfs @ 12.01 hrs, Volume= 0.169 af, Depth> 5.12" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description 0.374 98 + n n" 91 0.396 96 Weighted Average 0.022 5.56% Pervious Area 0.374 94.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 3S: Hydrograph 3 2.91 cfs Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=0.396 ac 2 Runoff Volume=0.169 of Runoff Depth>5.12" Tc=10.0 min CN=96 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) — RunoH Boat Landing Prepared by HP Type 1124 -hr 100yr Rainfall=6.00" Printed 7/7/2014 LLC Summary for Subcatchment 5S: Runoff = 6.74 ds @ 12.01 hrs, Volume= 0.363 af, Depth> 4.23" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100yr Rainfall=6.00" Area (ac) CN Description ' 0.720 98 0.310 61 1.030 87 Weighted Average 0.310 30.10% Pervious Area 0.720 69.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: Hydrograph Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=1.030 ac Runoff Volume=0.363 of Runoff Depth>4.23" Tc=10.0 min CN=87 Time (hours) — Runoft Boat Landing Type// 24 -hr 1 00y Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 40 Summary for Subcatchment 6S: Runoff = 1.00 cfs @ 12.02 hrs, Volume= 0.051 af, Depth> 1.97" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description 0.020 98 ' 0.289 61 0.309 63 Weighted Average 0.289 93.53% Pervious Area 0.020 6.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) 10.0 Direct Entry, Subcatchment 6S: Hydrograph 1.00 cfs 1 Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=0.309 ac Runoff Volume=0.051 of Runoff Depth>1.97" Tc=10.0 min CN=63 0 5 6 7 8 9 to 11 12 13 14 15 16 17 18 19 20 Time (hours) Rumrff Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 41 Summary for Subcatchment 8S: Runoff = 1.21 ds @ 12.01 hrs, Volume= 0.071 af, Depth> 5.27" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description 0.162 100.00% Impervious Area Tc Length 10.0 Description Direct Entry, Subcatchment 8S: Hydrograph Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=0.162 ac Runoff Volume=0.071 of Runoff Depth>5.27rr Tc=10.0 min CN=98 1n t1 19 11 1d 15 to 17 1A Time (houm) — RunoH Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 42 Summary for Subcatchment 9S: Existing Boat Launch Runoff = 12.62 cfs @ 12.02 hrs, Volume= 0.639 af, Depth> 2.84" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description ' 0.600 85 existing south parking lot 1.297 61 >75% Grass cover, Good, HSG B 0.800 85 existing north parking lot 2.697 73 Weighted Average 2.697 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 10.0 Direct Entry, Subcatchment 9S: Existing Boat Launch Hydrograph —Runoff 12-1Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=2.697 ac 6 Runoff Volume=0.639 of 7 Runoff Depth>2.84" 6 Tc=10.0 min 5 CN=73 12 13 14 15 16 17 18 19 Time (hours) Boat Landing Prepared by HP Type 1124 -hr 100yr Rainfall=6.00" Printed 7/7/2014 Software Solutions LLC Pane 41 Summary for Subcatchment 10S: north boat launch - gravel removed Runoff = 2.38 cis @ 12.02 hrs, Volume= 0.121 af, Depth> 1.81" Runoff by SCS TR -20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 00y Rainfall=6.00" Area (ac) CN Description ' 0.800 61 0.800 100.00% Pervious Area Tc Length Slope Description 10.0 Direct Entry, Subcatchment 10S: north boat launch - gravel removed Hydrograph 67 s Type II 24 -hr 100yr Rainfall=6.00" Runoff Area=0.800 ac Runoff Volume=0.121 of Runoff Depth>1.81" Tc=10.0 min CN=61 rime (hours) —Runoff Boat Landing Type 1124 -hr 100yrRainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 44 Summary for Reach 8R: swale Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 3.97" for 1 00y event Inflow = 2.80 cfs @ 12.03 hrs, Volume= 0.131 of Outflow = 2.71 cfs @ 12.06 hrs, Volume= 0.131 af, Atten= 3%, Lag= 1.6 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Max. Velocity= 3.79 fps, Min. Travel Time= 1.0 min Avg. Velocity = 1.22 fps, Avg. Travel Time= 3.2 min Peak Storage= 169 cf @ 12.05 hrs Average Depth at Peak Storage= 0.19' Bank -Full Depth= 2.00' Flow Area= 22.0 sf, Capacity= 306.66 cfs 3.00' x 2.00' deep channel, n= 0.030 Side Slope Z -value= 4.0'P Top Width= 19.00' Length= 230.0' Slope= 0.0674T Inlet Invert= 965.50', Outlet Invert= 950.00' Reach 8R: swale Hydrograph Inflow out"0111 Inflow Area=0.396 ac Avg. Flow Depth=0.19' Max Vel=3.79 fps n=0.030 L=230.0' S=0.0674'1' Capacity=306.66 cfs 5 fi 7 6 9 10 11 12 13 14 15 16 17 Time (Hours) Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 FYdroCAD910.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 45 Summary for Reach 10R: to Minnewashta PROPOSED Inflow Area = 2.697 ac, 47.31 % Impervious, Inflow Depth > 3.06" for 1 00y event Inflow = 7.43 cfs @ 12.05 hrs, Volume= 0.687 of Outflow = 7.43 cfs @ 12.05 hrs, Volume= 0.687 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach 10R: to Minnewashta PROPOSED Hydrograph Time (hours) hiNow OuHbw Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydrOCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 46 Summary for Pond 1 P: Rain Garden Inflow Area = 0.396 ac, 94.44% Impervious, Inflow Depth > 5.12" for 1 00y event Inflow = 2.91 cfs @ 12.01 hrs, Volume= 0.169 of Outflow = 2.81 cfs @ 12.03 hrs, Volume= 0.138 af, Atten= 3%, Lag= 1.7 min Discarded = 0.01 cfs @ 12.03 hrs, Volume= 0.007 of Primary = 2.80 cfs @ 12.03 hrs, Volume= 0.131 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 965.36'@ 12.03 hrs Surf.Area= 0.027 ac Storage= 0.039 of Plug -Flow detention time= 95.3 min calculated for 0.138 of (82% of inflow) Center -of -Mass det. time= 43.4 min ( 780.3 - 736.9 ) Volume Invert Avail Storage Storage Description #1 963.00' 0.059 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 963.00 0.009 0.000 0.000 964.00 0.015 0.012 0.012 965.00 0.022 0.018 0.030 966.00 0.035 0.028 0.059 Device Routing Invert Outlet Devices #1 Primary 965.00' S.0' long x 2.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2 Discarded 963.00' 0.300 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.03 hrs HW=965.35' (Free Discharge) 2=ExflItration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=2.74 cfs @ 12.03 hrs HW=965.35' (Free Discharge) 't1=Broad-Crested Rectangular Weir(Weir Controls 2.74 cfs @ 1.54 fps) Boat Landing Prepared by HP HydrOCAD®10.00 Pond 1P: Rain Garden Hydrograph Type 1124 -hr 100yr Rainfall=6.00" Printed 7/7/2014 3- 2. ds Inflow Area=0.396 ac Peak Elev=965.36' 2 Storage=0.039 of 1 0.01 cfs 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2( Time (hours) — Innow — Outnow — Diswrded — Primary Boat Landing Type// 24 -hr 1 00y Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCAM 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 48 Summary for Pond 2P: Rain Garden w/ Yard Drain Inflow Area = 1.426 ac, 76.72% Impervious, Inflow Depth > 4.16" for 1 00y event Inflow = 9.23 cfs @ 12.02 hrs, Volume= 0.494 of Outflow = 9.22 cfs @ 12.03 hrs, Volume= 0.482 af, Atten= 0%, Lag= 0.6 min Discarded = 0.00 cfs @ 12.03 hrs, Volume= 0.004 of Primary = 9.22 cfs @ 12.03 hrs, Volume= 0.477 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 950.04' @ 12.03 hrs Surf.Area= 0.016 ac Storage= 0.020 of Plug -Flow detention time= 18.3 min calculated for 0.482 of (98% of inflow) Center -of -Mass det. time= 8.5 min ( 774.1 - 765.6 ) Volume Invert Avail Storage Storage Description #1 948.00' 0.039 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 948.00 0.004 0.000 0.000 949.00 0.009 0.006 0.006 950.00 0.016 0.012 0.019 951.00 0.024 0.020 0.039 Device Routing Invert Outlet Devices #1 Primary 946.00' 15.0" Round Culvert L= 71.0' Ke= 0.500 Inlet/ Outlet Invert= 946.00'/ 945.00' S= 0.0141 T Cc= 0.900 n= 0.014, Flow Area= 1.23 sf #2 Secondary 950.30' 20.0' long x 20.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #3 Device 1 949.50' 27.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Discarded 948.00' 0.300 in/hr Exfiltration over Surface area piscarded OutFlow, Max=0.00 cfs @ 12.03 hrs HW=950.03' (Free Discharge) '�-4=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=9.00 cfs @ 12.03 hrs HW=950.03' (Free Discharge) t__ -Culvert (Passes 9.00 cfs of 10.36 cfs potential flow) t3=Orifice/Grate (Weir Controls 9.00 cfs @ 2.39 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=948.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Prepared by HP Type// 24 -hr 100yr Rainfall=6.00" Printed 7/7/2014 Pond 2P: Rain Garden w/ Yard Drain Hydrograph — Inflow — Outflow — Discarded Inflow Area=1.426 ac —Pdmry — Secondary Peak Elev=950.04' Storage=0.020 of Time (hour:) Boat Landing Type 1124 -hr 100yr Rainfall=6.00' Prepared by HP Printed 7/7/2014 uydroCAD®10 00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Paae 50 Summary for Pond 4P: Stormwater Basin Inflow Area = 1.735 ac, 64.21 % Impervious, Inflow Depth > 3.65" for 1 00y event Inflow = 10.22 cfs @ 12.03 hrs, Volume= 0.528 of Outflow = 4.41 cfs @ 12.19 hrs, Volume= 0.520 af, Atten= 57%, Lag= 9.5 min Primary = 4.41 cfs @ 12.19 hrs, Volume= 0.520 of Secondary = 0.00 cis @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 946.00' Surf.Area= 0.045 ac Storage= 0.034 of Peak Elev= 948.27' @ 12.19 hrs Surf.Area= 0.081 ac Storage= 0.183 of (0.149 of above start) Plug -Flow detention time= 54.5 min calculated for 0.484 of (92% of inflow) Center -of -Mass det. time= 17.7 min ( 794.7 - 777.0 ) Volume Invert Avail Storage Storage Description #1 945.00' 0.245 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 945.00 0.023 0.000 0.000 946.00 0.045 0.034 0.034 947.00 0.066 0.055 0.089 948.00 0.078 0.072 0.161 949.00 0.090 0.084 0.245 Device Routing Invert Outlet Devices #1 Primary 946.00' 12.0" Round Culvert L= 100.0' Ke= 0.500 Inlet/ Outlet Invert= 946.00'/945.00' S= 0.0100'P Cc= 0.900 n= 0.013, Flow Area= 0.79 sf #2 Secondary 948.50' 10.0' long x 10.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=4.40 cfs @ 12.19 hrs HW=948.27' (Free Discharge) t-1=Culvert (Barrel Controls 4.40 cfs @ 5.61 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=946.00' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Boat Landing Prepared by HP 11 Type 1124 -hr 100yr Rainfall=6.00" Printed 7/7/2014 Pond 4P: Stormwater Basin Hydrograph Inflow Area=1.735 ac Time (hours) Peak Elev=948.27' Storage=0.183 of F--,--ft-w---i POM, —Secondary Boat Landing Type 1124 -hr 100yr Rainfall=6.00" Prepared by HP Printed 7/7/2014 HydroCADO 10.00 s/n 00883 © 2012 HydroCAD Software Solutions LLC Page 52 Summary for Pond 7P: Inflow Area = 0.162 ac,100.00% Impervious, Inflow Depth > 5.27" for 100yr event Inflow = 1.21 cfs @ 12.01 hrs, Volume= 0.071 of Outflow = 1.16 cfs @ 12.03 hrs, Volume= 0.054 af, Atten= 4%, Lag= 1.7 min Discarded = 0.01 cfs @ 12.03 hrs, Volume= 0.007 of Primary = 1.15 cfs @ 12.03 hrs, Volume= 0.047 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 952.63' @ 12.03 hrs Surf.Area= 0.029 ac Storage= 0.021 of Plug -Flow detention time= 110.1 min calculated for 0.054 of (76% of inflow) Center -of -Mass det. time= 51.0 min ( 783.0 - 732.1 ) Volume Invert Avail Storage Storage Description #1 951.00' 0.089 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 951.00 0.005 0.000 0.000 952.00 0.011 0.008 0.008 953.00 0.040 0.025 0.033 954.00 0.070 0.055 0.089 Device Routing Invert Outlet Devices #1 Primary 952.50' 10.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 951.00' 0.300 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.03 hrs HW=952.63' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.12 cfs @ 12.03 hrs HW=952.63' (Free Discharge) L7=Broad-Crested Rectangular Weir(Weir Controls 1.12 cfs @ 0.85 fps) Boat Landing Prepared by HP b V Pond 7P: Hydrograph Type 1124 -hr 100yr Rainfall=6.00" Printed 7/7/2014 Inflow Area=0.162 ac Time (hours) Peak Elev=952.63' Storage=0.021 of —Inflow — Outflow — Discarded Primary . .... ............b w »..».. �.... J .. �.............. »..-.. ».,....b.........,....,... ........o J .. ....o..............6 —.... – This Purchase Agreement does not necessarily cover all of the issues that would be important to Sellers and Buyers, nor does it address the terms that would be appropriate for any particular transaction. Sellers and Buyers should obtain the services of qualified legal counsel to adapt this Purchase Agreement to meet their specific needs. PURCFIASE AGREEMENT FOR WETLAND BANKING CREDITS THIS AGREEMENT is made this 23_ day of _July_, 2014_ between Jeff Richards (Seller)//and _Carver County - Marty Walsh (Buyer). Seller agrees to sell to Buyer, and Buyer agrees to buy from Seller, the wetland banking credits (Credits) listed below: CREDITS TO BE SOLD Credit Acres or Wetland Plant Community Type Cost per State Fee Fee Sub- Sq. Ft. Circ. 39 Acre or Sq. 6.5% Estimate Group' Type Foot A 2191 sf 2 Sedge meadow $0.85 0.065 $142.42 B 0.065 C 0.065 D. 0.065 E 2191 sf U Upland $0.85 0.065 $142.42 Totals 4382 $284.83 Check here if additional credits b- o s are part of this account and are listed on an attachment to this document. 'A separate credit sub -group shall be established for each wetland or wetland area that has different wetland characteristics. 'Circular 39 types: 1, 11., 2, 3, 4, 5, 6, 7, 8, B, U. 3Welland plant community type: shallow open water, deep marsh, shallow marsh, sedge meadow, fresh meadow, wet to wet-mesic prairie, calcareous fen, open bog or coniferous bog, shrub-carr/aider thicket, hardwood swamp or coniferous swamp, floodplain forest, seasonally flooded basin. See Wetland Plants and Plant Communities of Minnesota and 117sconsin (Eggers and Reed, 1997) as modified by the Board of Water and Soil Resources, United States Army Corps of En nese.. 2. Seller represents and warrants as follows: a) The Credits are deposited in an account in the Minnesota Wetland Bank administered by the Minnesota Board of Water and Soil Resources (BWSR) pursuant to Minn. Rules Chapter 8420.0700-.0760. Page 1 of 2 BWSR Form: wca-bank-12 (purchase agreement).doc Revised 6/26/2014 Buyer will pay Seller a total of $_3724.70_ for the Credits, as follows: a) $_ _ as earnest money, to be paid when this Agreement is signed; and b) The balance of $_3724.70 _ to be paid on the Closing Date listed below. 4. [® ] Buyer, [Q ] Seller agrees to pay to a withdrawal fee of $_284.83_ to the State of Minnesota based on 6.5% of the agreed to purchase price. At the Closing Date, [®] Buyer, [0 ] Seller will execute a check made out for this amount, payable to the Board of Water and Soil Resources. 5. The closing of the purchase and sale shall occur on _or before December 15_, 2014_ (Closing Date) at _Carver County Parks - 11360 Hwy 212 W, Cologne, MN 55322_. The Closing Date and location may be changed by written consent of both parties. Upon payment of the balance of the purchase price, Seller will sign a fully executed Application for Withdrawal of the Credits in the form specified BWSR, provide a copy of the Application for Withdrawal to the Buyer and forward the same to the BWSR along with the check for the withdrawal fee. 6. Buyer has applied or will apply to _City of Chanhassen_ (Local Government Unit (LGU) or other regulatory authority) for approval of a replacement plan utilizing the Credits as the means of replacing impacted wetlands. If the LGU has not approved the Buyer's application for a replacement plan utilizing the Credits by the Closing Date, and no postponement of the Closing Date has been agreed to by Buyer and Seller in writing, then either Buyer or Seller may cancel this Agreement by giving written notice to the other. In this case, Seller shall return Buyer's earnest money, and neither Buyer nor Seller shall have any further obligations under this Agreement. If the LGU has approved the replacement plan and the Seller is ready to proceed with the sale on the Closing Date, but Buyer fails to proceed, then the Seller may retain the earnest money as liquidated damages. ��LtG,J 1-36 - 14 /4(�ign��� (Sipiia o eller) (Date) of Buyer) (Date) Page 2 of 2 ��li 4��rr Co✓N BWSR Form: wee -bank -12 (purchase agreement).doc Revised 6/26/2014 Application to State Park Road Account Program (SPRA) Proposed Project Scenic Drive Road Pavement For Carver County Lake Minnewashta Regional Park December 14`h12011 Submitted by Carver County To Dave Sobania, Principle Engineer DNR Management Resources 1601 Minnesota Drive Brainerd, MN 56401 Via Email to: Dave.sobania@state.mn.us TABLE OF CONTENTS 1. Project Narrative pages 2 and 3 2. Exhibits a. Park Location Map b. 2010 Metropolitan Council Annual Use Estimate for Lake Minnewashta Regional P ark c. 2008 Metropolitan Council Regional Park Survey Local vs. Non Local Visits d. Map of Lake Minnewashta Regional Park e. Metro Distribution of Carver County Parks Annual Vehicle Permits f. 2009 Traffic Volumes for the Municipality of Chanhassen g. Lake Minnewashta Regional Park Contour Map h. Photos of Roadway Showing Erosion i. Engineers Opinion of Probable Cost j. Letter of Support from County Engineer k. Letter of Support from DNR Unit Manager I SPRA Project Narrative For: Scenic Drive Road Pavement at Lake Minnewashta Regional Park Introduction: Carver County opened Lake Minnewashta Regional Park in 1982. Today the park is located in an urbanized area of the City of Chanhassen and has the only gravel public roadway in this area of the County (Exhibit A— Park Location Map). This park has 2 miles of shoreline habitat, and 341 acres of forested, wetland, prairie and developed lands. Facilities constructed to date include: gravel roadways and parking areas, two boat accesses, 4 picnic shelters, beach area, creative playground, 5 miles of trail and a fishing pier. The park has over 147,400 yearly user visits to the park as recorded in the annual use estimate by the Metropolitan Council (Exhibit B — 2010 Annual Use Estimate). Additionally, Lake Minnewashta Regional Park attracts users from outside its taxing jurisdiction. Sixty three percent of the visits to the park originate from outside of Carver County (Exhibit C —2008 Regional Park User Survey conducted by the Metropolitan Council). Project Description: Carver County proposes to pave just over one mile (5,300 feet) of park road (Scenic Drive) at Lake Minnewashta Regional Park and construct an entrance bypass lane to improve access to recreational facilities, safety, erosion control, and user enjoyment. The project would involve adding 8 inches of class S aggregate base to the existing gravel road, 22 -foot wide rural bituminous roadway consisting of 4" of bituminous with gravel shoulders, construction of a park entrance bypass lane and improvements to manage storm water run-off. Preliminary engineering has been completed for this project. If funded the proposed project timeline would be as follows: May—June 2012: final engineering design and plans and specs finalized July —August 2012: Advertise for bid and award contract September 2012 — December 2012: Construction General Information: The project provides access to the only public boat accesses to the 676 acres of Lake Minnewashta. Thirty five vehicles with trailers are accommodated at the two boat accesses. Additionally, the road also services other recreation features of fishing pier, beach, picnic areas, playground, trail head and off - leash dog area. From annual user counts data the ADT for Scenic Drive is approximately 400 vehicles a day. The enclosed map (Exhibit D) shows the layout of the park and its recreational facilities. Safety Improvements: The project improves safety of the park. The existing gravel roadway in the park has insufficient aggregate base, the road can become hazardous due to the formation of frost boils in the spring and pumping of mud through the gravel base when soils are waterlogged causing soft spots and irregular road and driving conditions. Scenic Drive is a mile long roadway with curves and hills. Eliminating a loose rock road surface condition will improve safety for drivers to be able to navigate curves and hills without feeling they will slide into oncoming traffic. The loose rock condition creates a surface that can cause cars to slide through a curve or slide off an incline due to a washboard condition on hills. Winter driving will also be improved. A paved road provides a superior road surface for winter maintenance. Snow plows perform much better on roadways with a hard smooth surface removing more snow and ice from the road. The dark surface of pavement absorbs sunlight and improves the melting of snow and ice. Sand and rock chips can be minimally used on a paved surface as compared to gravel roadways. Treatment of gravel roadways with salt is avoided to reduce instability of the road bed in spring. With pavement, there is a greater ability to maintain the road surface to a higher standard. This will improve driver safety and reduce damage to property. A paved road surface and accompanying storm water management features will reduce erosion and provide storm water treatment. The park entrance road has a total elevation change of 90 feet from the park entrance to the beach parking lot. Seventy feet in elevation change occurs within the first 1/3 of a mile on the entrance road (Exhibit G — Map of park with contours). Storm water run-off from alongside the roadway has caused the gravel road surface to wash away and form gullies due to the topography that creates a concentrated water flow along roadway edges. Gravel is washed from the roadway and eroded material is filling in ditches, scouring out gullies, contributing to sedimentation and contributing to poor water quality. See Exhibit H photos of the roadway. Other safety improvements which are being considered with the construction of Scenic Drive at Lake Minnewashta Regional Park include Safety Edge with the pavement installation. Additionally, the paved surface would allow for pavement markings at trail crossings, potential modification of the road at trail crossings with the addition of a "choker" or "pedestrian table", center stripe, and a review of all road signage to meet MN MUTCD. Another planned safety feature is a bypass lane to be constructed at the park entrance off of TH 41. Lake Minnewashta Regional Park fronts on TH 41. The 2009 ADT count for TH 41 at the park location is 17,000 (Exhibit F). Visitors to the park enter the park off of the state highway and stop at the entrance gate for admission and information. At times traffic can be backed up at the entrance gate and onto TH 41. The construction of a bypass lane at the park entrance gate would allow for more rapid entrance admittance for pre paid customers to be waived through and provide room for additional stacking of vehicles at the entrance when needed. The bypass lane is particularly beneficial to those with boat trailers by reducing the potential for the trailer to extend onto the traffic lanes of TH 41 as vehicles begin to stack up for admittance into the park. User enjoyment is an important aspect of park operations. A paved road surface will enhance the overall park experience. A smooth road provides an enjoyable driving surface. Visually, pavement provides a defined edge to the roadway improving aesthetic quality of the park. User enjoyment is enhanced by eliminating concerns with dust during dry conditions and red rock mud during wet conditions. Controlling dust with chemicals on the mile long stretch of road would be eliminated and an environmental benefit. Preliminary Cost Estimate: The estimated project cost for 2012 construction is $506,420.00 (2010 cost+ 5% added for inflation and the added cost for change recommended by our engineering staff) for construction and materials. For additional detail see Exhibit I Opinion of Probable Cost. With assistance from the engineering and planning firm of WSB and Associates, Inc. an opinion of probable cost was prepared in 2010. Carver County Engineering staff has reviewed the preliminary plans and project cost estimate and have included geotextile fabric on the entire project between the existing road bed and the newly added aggregate material to prevent migration or poor soils into the road bed over time. This addition increases the project cost by $25,700 and in included in the total project cost above. Local Commitment: Carver County designed and created the existing road alignment. The infrastructure of the graded road bed with some gravel road surface is in place. Other infrastructure for the roadway of culverts and ditches are in place. The State Park Road Account Program assistance is requested to finish the road project by providing 100% of the funding to pave the main park roadway and construct the additional bypass lane at the park entrance. Carver County will be responsible for engineering, development of plans and specifications, inspection and project management. When completed Carver County will be responsible for the ongoing maintenance and repair of Scenic Drive. This grant request does not include any local match for the project construction. Letters of Support: Exhibits 1 and K are letters of support from County Engineer, Lyndon Robjent, and DNR Area Parks and Trails Supervisor, Rachel Hitzman. Lake Minnewashta Reaional Park Location Ma Anoka County Hennepin County Lake Minnewashta Regional Park Carver County Scott County Exhibit A Park Location Map -'- Wasffington County Rimsey County Exhibit B 2010 Met, Council Annual Use Estimate for LMP Table 1: 2010 Visitation Estimate Notes: All visits are listed in units of 1,000 (Le.. "50.5" Is equivalent to 50.S00 'falls). RP • Regional Par; PR = Park Reserve; RT • Regional Trail; SRF = Special Recreation Feature - OTHFR' Camping Is in' sltor4ays;' where ea& Ns8 is ane person in the par for one day. A famsy of four slaying one night would have 8 visltor-days. Special events Include events over 300 and any unusual per-spedac situations. Spedel events and situations are detailed in Table 2. ' In this park the majority of users are trail users. The multipliers were adjusted to reflect the mix of trail and park use. Slimmer Winter Spring/Fall Other Camping Special Events Total Visits O & M Grant Agency/Park visits (1,000'x) use multiplier visite (1,1100's) use mul8plier vlsffs (1,000'x) (1,000's) (1,000's) (1,000'x) Adjustments • Anoka Co. Riverfronl RP 135.8 0.245 33,2 1.054 143.1 0.0 0.0 312.1 Bunker Beach Bunker Hills RP 266.7 0.178 47.6 0.957 255.3 26.9 228.5 823.9 -122.4 Central Anoka RT 25.2 0.306 7.7 1.317 33.1 0.0 0.0 66.0 Coon Rapids Cam RP 263.8 0.178 47.0 0.957 252.4 0.0 17.7 580.9 Lake George RP 136.5 0.178 24.3 0.967 130.6 0.0 7.8 298.9 Martin-aland-Linwood Lakes RP 84.8 0.178 11.5 0.957 81.8 0.0 9.3 147.3 307.3 Mississippi River RT 33.2 0.306 10.2 1.317 43.7 0.0 0.0 87.1 Rice Creek Chain PR 144.8 0.178 25.7 0.067 138.3 31.0 SS3 394.9 Rice Creek North RT 27.8 0.306 8.5 1.317 36.6 0.0 0.0 72.9 Rice Creek West RT 148.9 0.306 46.8 1.317 198.1 0.0 0.0 390.5 Rum River Central RP 1 44.7 0.178 7.9 0.957 42.7 0.0 0.0 95.3 RP/PR/SRF subtotals 1,056.6 197.1 1,024.3 56.9 318.3 2,653.2 RT subtotals 235.0 71.9 309.5 0.0 0.0 616.4 Subtotal: 1,291.6 269.1 1,333.8 56.9 318.3 3,269.6 3,1d7.2 Notes: All visits are listed in units of 1,000 (Le.. "50.5" Is equivalent to 50.S00 'falls). RP • Regional Par; PR = Park Reserve; RT • Regional Trail; SRF = Special Recreation Feature - OTHFR' Camping Is in' sltor4ays;' where ea& Ns8 is ane person in the par for one day. A famsy of four slaying one night would have 8 visltor-days. Special events Include events over 300 and any unusual per-spedac situations. Spedel events and situations are detailed in Table 2. ' In this park the majority of users are trail users. The multipliers were adjusted to reflect the mix of trail and park use. Summer Winter Spring/Fall Other Camping Special Events Total Visits O & M Grant Agency/Park visits (1,000'x) use multiplier visits (1,000'x) use multlplier visits (1,000's) (1,000's) (1,000's) (1,000'5) Adjustments Bush and Normandale Lakes RP 259.9 0.178 46.3 0.957 248.7 0.0 55.5 610.4 Subtotal 259.9 46.3 248.7 0.0 55.5 610.4 610.4 Notes: All visits are listed in units of 1,000 (Le.. "50.5" Is equivalent to 50.S00 'falls). RP • Regional Par; PR = Park Reserve; RT • Regional Trail; SRF = Special Recreation Feature - OTHFR' Camping Is in' sltor4ays;' where ea& Ns8 is ane person in the par for one day. A famsy of four slaying one night would have 8 visltor-days. Special events Include events over 300 and any unusual per-spedac situations. Spedel events and situations are detailed in Table 2. ' In this park the majority of users are trail users. The multipliers were adjusted to reflect the mix of trail and park use. Summer Winter Spring/Fall Other Camping Special Events Total Visits O & M Grant Agency/Park visits (1,000's) use multiplier visits(1,000's) use multiplier visits (1,000's) (1,000'5) (1,000'8) (1,000'5) Adjustments Baylor RP • 19.0 0.178 34 0.957 18.2 19.8 6.3 667 Lake Minneveishla RP 66.7 0.178 11.9 0.957 63.9 0.0 4.8 147.4 Lake Wacora RP 38.0 0.178 6.8 0.957 36.4 0.0 12.1 93.2 RP/PR/SRF subtotals 123.8 22.0 118.4 19.8 23.2 3073 RT subtotals 0.0 0.0 0.0 0.0 0.0 0.0 Subtotal. 123.8 22.0 118.4 19.8 23.2 307.3 307.3 Notes: All visits are listed in units of 1,000 (Le.. "50.5" Is equivalent to 50.S00 'falls). RP • Regional Par; PR = Park Reserve; RT • Regional Trail; SRF = Special Recreation Feature - OTHFR' Camping Is in' sltor4ays;' where ea& Ns8 is ane person in the par for one day. A famsy of four slaying one night would have 8 visltor-days. Special events Include events over 300 and any unusual per-spedac situations. Spedel events and situations are detailed in Table 2. ' In this park the majority of users are trail users. The multipliers were adjusted to reflect the mix of trail and park use. Carver county Parks: Local vs. Non -Local Exhibit C Local vs. Non Local Visits May not equal 100 percent due to rounding 2009 Metropolitan Council Regional Parks Survey Wash_ Anoka Bloom. Carver Dakota Ramsey Scott St. Three Greater Out oUnknown f Outside Visits Carver County N County ington County County MPRB County County Paul Rivers ington MN State us Non - County local Agencywide 388 1% 2% 48% 5% 3% <1% 5% 1% 20% <1% 14°% 2% 52% Baylor 71 3% 45% 3% 1% 3% 1% 42% 1% 55% Lake Minnewashta 152 1% 1% 38% 7% 5% 1% 7% 37% 2% 2% 63% Lake Waconia 165 1% 1% 58% 4% 2% 5% 1% 13% 12% 2% 42% May not equal 100 percent due to rounding 2009 Metropolitan Council Regional Parks Survey Exhibit D Map of Lake Lake Minnewashta Regional Park Minnewashta Park j akel'Minn,ewasVal Y RT ., (Fishing Pier -© slww kY r .�°? Proposed Bypass 10 Stall Trailer Parking Lane `. �cr.anv. and Boat launch .t ah:/l PIaYAe • y sh.lrer,rs a `Af =-Le gend A • '-'ID Park Road to be Paved ------- Trails Fishing Pier \ 0 Caretaker Home ,\ 'a�Roto bPPaved (appror. 5300 .q ;,� /a25 Stall Trailer Parking and Boat launch <`'j 1 Maintenance Shop Boat Access u .yPicnic Shelters Gate House/Honor Box REGIONAL PARK yy ... * r ,. r'. , �' .;4.' "'t Beach Carver County Park Permits 2009 - Metro Distribution Exhibit E Distribution of Annual Vehicle Permits Permits per 7 County Metro Area Anoka: 12 Carver: 2289 Dakota: 30 Hennepin: 1054 Ramsey: 13 Scott: 119 Washington: 5 Total: 3522 Exhibit F 2009 Traffic Volumes (0 Q g60 _4 0 S � BOO; •' ♦ ♦ ^ t w S� Ile 01` t i b. c m Lam. C `C c .L2 XLli6 ° Y 000 40 Y N OeoOSOV d tYs 41 .. � 056 M 1 io00 ■ �y 1 V o W _ l o • .0 _ _Oy0zo1 t - �C a I �roO� 1 °00 I ,o80.f,Z P'A. � lr�OpOI � j•- Iq }�n_�� a a•��c OD01. • - 0-�.a �" � �� �i. � • S0D_ ObO�i - � f ory0 pOo t 7 04 Ol k,d g60 _4 0 S � BOO; •' ♦ ♦ ^ t w S� Ile 01` d b. 096 m Lam. C `C c d ! • ° Y a 40 tl d tYs 41 pB Wv 056 M 1 „ (t♦ ■ �y 1 V o W s ry o o • d CD _ a I g60 01` d nJ m C `C c Y a 40 tl d p N 0 J Q g o N U a � o W s ry o d CD _ g60 01` nJ C `C c 40 g60 01` i 4a 3 O bb i S f6 1-• L `:' -lk �c . - - _ :;t ,, `,e(jo p 3�(� 4YY 4Y4 •H � t f ,_ _ � h � yy ._ S Jn%f T SM }..i/f �£ 6 � �;f ff ' 1"` '� ri r� l '� .fi " 1Jy,5 �_, t p� ����. {����{�Y.h:Y j 'y` �7 ` �p -� - �� , �i. .��,�t fir`. e . f_ � �,q t� � �.,��x� `:: .E :Y i _O� .. ( w2 .. r 1 { { 1 r 2 Engineering 1 Planning 1 Environmental 1 Construction August 30, 2010 Mr. Marty Walsh Carver County Parks 600 East 0 Street Chaska, MN 55318 Re: Lake Minnewashta Park Main Park Road Improvements and Bypass Lane WSB Project No. 1945-00 Dear Mr. Walsh Exhibit I Engineers Opinion of Probable Cost 701 Xenia Avenue South Suite 300 Minneapolis, MN 55416 Tel: 763-541-4000 Fax 763.541-1700 The following is a summary of the Lake Minnewashta Park, Main Park Road and bypass lane improvements. The information includes the proposed design, an opinion of probable costs, and a figure of the site. We would be happy to discuss this information with you at your convenience. Please contact me at (763) 541-4800 if you have any questions or concerns. Sincerely, WSB & Associates, Inc. Diane Hankee, PE Project Manager Enclosure PE $Kenned cipal Minneapolis 1 St Cloud Equal Opportunity Employer INTRODUCTION The proposed improvements to Lake Minnewashta Park include the bituminous paving of Main Park Road and the construction of a bypass lane at the park entrance. A map illustrating the project is shown on the enclosed Figure. The proposed improvement cost is estimated to be $543,756.50, which includes 10% contingency and 30% indirect costs. The Opinion of Probable Costs is also enclosed. EXISTING CONDITIONS A majority of Main Park Road is gavel. The gravel portion of the roadway is approximately 5300 feet long and is 22 to 26 -foot wide with 2 to 4 inches of existing class 5 aggregate base. The match points of the roadway improvements are paved; the park entrance off of County Road 41 is paved approximately 300 feet into the site, and the existing parking lot located in the northwest comer of the park is also paved. Stormwater runoff from the roadway typically flows into adjacent drainage ditches. Sections of the roadway have steep grades which creates erosion along the edges. In addition, there are a few areas where the existing ditch system has limited storage for large rain events and in the spring thaw. Private utility locations are assumed to not conflict with the proposed construction. This should be verified with a gopher one design locate and coordination during the final design portion of the project PROPOSED IMPROVEMENTS The proposed project includes the bituminous paving of Main Park Road as a 22 -foot wide rural bituminous roadway with gravel shoulders. The pavement section will consist of approximately 4 inches of bituminous and 8 inches of Class 5 aggregate base on the existing gravel surface. Generally, the existing drainage patterns will be maintained. Bituminous curb will be installed along the roadway where there are steep grades. This will minimize erosion and improve drainage. Excavating for additional storm water storage and infiltration will be completed in a few locations to meet watershed requirements and to protect the roadway subgrade. The project also includes constructing a bypass lane at the entrance of the park along the north side approximately 250 feet long. This work will require the re-establishment of the ditch. Infiltration for the new impervious surface may be necessary and this could be constructed as part of the re-establishment of the ditch. The following permits maybe required as part of the proposed construction: Natl. Pollutant Discharge Elimination System(NPDES) ....... Erosion/Stormwater Permit Minnehaha Creek Watershed District.................................................................. Drainage Opinion of Probable Cost WSB Project: Lake 1,6mc +ashM Park -Main Park Road Improvements Project Location: CarverCounty Cowry Project No.: WSB Pro'ect No.' Rem No. MN/DOT S eciBcation No. Description Unit Unit Price Estimated anlitY Estimated Cost Lake Minnewashta Park Improvements A. Main Park Road 1 2021.601 MOBILIZATION LUMPSUM $12.000.00 1 1 i 12000.00 2 2101.502 CLEARING TREE 150.00 6 $ 750.00 3 2101.507 GRUBBING TREE 125.00 6 S 625.00 4 2104.505 REMOVE BITUMINOUS PAVEMENT SO YD S 3.00 150 S 450.00 5 2104.513 SAWING BITUMINOUS PAVEMENT FULL DEPTH LIN FT S 3.00 80 $ 240.00 B 2104.523 SALVAGE & REINSTALLSIGN EACH $ 100.00 5 $ 500.00 7 2106.501 COMMON EXCAVATION CUYD S 12.00 600 $ 9800.00 8 2105.515 SUBGRADE EXCAVATION Cu YD 15.00 600 7,500.00 B 2105.80/ GEOTIXTILE FABRIC TYPE N SO YD i 2.00 50 $ 100.00 10 2112.501 SUBGRADE PREPARATION ROAD STA S 175.00 SJ 8275.00 11 2211301 AGGREGATE BASE CLASS 5 TON 10.00 5800 68000.00 12 2221.607 AGGREGATE SHOULDERING CLASS TON 18.00 930 7710.00 13 2350.501 TYPE LV 4 WEARING COURSE B TON E 62.00 1590 98550.00 14 2360.602 TYPE LV3 NON -WEARING COURSE B TON 6 .00 1640 $ 95120.DD 15 2367.502 BITUMINOUS MATERIAL FOR TACK COAT GALLON $ 2.76 710 $ 195250 16 2511.501 RANDOM RIPRAP CLASS III CU YD $ 75.00 75 S 5625.00 17 2535.501 BITUMINOUS CURB LIN FT 7.00 1800 11800.00 18 2645.601 6" DRAIFITILE LIN FT $ 18.00 1000 1 15 000.00 19 2 3.602 SILT FENCE TYPE HEAVY DUTY LIN FT i 2.00 4500 S 90DOeO 20 2553.501 TRAFFIC CONTROL LUMP SUM $ 2000.00 1 S 2000.00 21 2575.501 SEEDING ONCL TOPSOIL FERT MULCH DISC ANCHOR ACRE S 2200.00 1.75 S 9850.00 22 2575.606 SODDING, TYPE LAWN INCL TOPSOIL& FERT. SD YD S 4.25 1500 $ 6375.00 23 2576.523 EROSION CONTROL BLANKET CATEGORY 2 SO YD 1.601 2500 IF 3,750.00 S 363,83250 CORTINGENg 1 3 38 383.25 O AL $ 399,095.75 B. Park Entrance and Bypass Lane 1 2021.501 MOBILIZATION LUMP SUM $ 6000.00 1 1 $ 6000.00 2 2101.502 CLEARING TREE It 150.00 2 $ - 3DO.OD 3 2101.507 GRU88ING TREE 3 125.00 2 S 250.00 2 2104.505 REMOVE BITUMINOUS PAVEMENT SO YD S 2.50 1100 $ 2750.00 7- -21W313-- AWINGBITUMINOUS"PAVEMENT FULL DEPTHT LIN TT-- T -- 2.60' -""-25T-- 3 - -"825 0 4 2104.523 SALVAGE & REINSTALL SIGN EACH 100.00 2 200.00 5 2105.501 COMMON EXCAVATION CU YD 11 13.00 200 $ 2,600.00 8 2105.515 SUBGRADE EXCAVATKIN E CU YO $ 18.00 60 S 800.00 7 2105.621 GRANULAR BORROW C CU YD 10.00 700 7000.0D 8 2211.501 AGGREGATE BASE CLASS 5 TON $ %oo 200 S 2.000.0D 9 2221.501 AGGREGATE SHOULDERING CLASS 5 TON i 18.00 55 S 990.0D 10 2350.501 TYPE LV 4 WEARING COURSE B TON 58.00 175 $ 10150.00 11 2350.502 TYPE LV3 NON -WEARING COURSE a TON S 58.00 185 3 10730.00 12 2357.502 BITUMINOUS MATERIAL FOR TACK COAT GALLON i 2.T5 70 i 19250 13 1 2553.507 ITRAFFIC CONTROL I LUMP SUM 1 S 200D.00 1 1 $ 2000.00 14 1 2584.501 ISTRIPING I LUMP SUM I S 1,200.001 1 $ 1,200,00 14 1 b.505 SODDING TYPE LAWN QNCL. TOPSOIL d ERT. SO YD 4.251 1100 64875.00 SUBTOTAL $ 61462.50 CONTINGENG 10 S 5146.25 TOTA i 65,808.75 PROJECT TOT/LL $ 466,604.50 Add 12,900 SQ YO Geotextile $25,700.00 Project Subtotal $482.304.50 5%inflation $24,115.25 ESTIMATED PROJECT TOTAL $506,479.75 WSB Pmt. No. 7594-20 COMBINEDTOTAL Kn019454)0lAdmin\Doce\Opinion of Cost MJJ (0824 10) Carver County ft bfi�c Works Id..inistration Tato 113607fighway 212 Engineeting Suite 1 MWfivvy 91faintenanre Cologne, 91N 553 22-801 6 Equipment 9tfaintenanre Thou(952)466-5200 rFar(952)466-5223 Sun tying a2 Mapping Exhibit J Letter of Support from County Engineer December 1, 2011 David Sobania Principle Engineer 1601 Minnesota Drive Brainerd, MN 56401 Re: Application for State Park Road Account Funds Dear Mr. Sobania, I am pleased to write a letter of support for the park road paving project at Lake Minnewashta Regional Park. The proposed project provides benefits which enhance access to fishing and boating as well as to other park amenities. Additionally, the project provides improved safety for our visitors to the park and travelers along TH 41. Lake Minnewashta Regional Park is a very popular recreation destination attracting over 147,400 user visits annually most of which originate from outside of the County. Maintaining the gravel roadway with an estimated ADT of 400 creates ongoing maintenance problems and safety concerns. Further, the gravel roadway is out of character with the urbanized environment for which the park is located. The project will enhance safe travel to the public boat access and increase user satisfaction and enjoyment of the park. Thank you for your consideration. Sincerely, Lyndorr�tgbj int Carver County Public Works Division Director County Engineer 5/Parks/Grant Info/DNR/State Park Road Account Program/ LMP park road/County Engineers letter of support Exhibit K Letter of Support from DNR Unit Manager Minnesota Department of Natural Resources Division of Parks & Trails 1200 Warner Road St Paul, MN 55106 651.259-5875 November 14, 2011 Mr. Marty Walsh Carver County Parks 11360 Highway 212 Suite 2 Cologne, MN 55322 Re: Application for State Park Road Account Funds Dear Mr. Walsh, MlnnesDla DEPARTUE19 OF NATURAL RESOURCES Thank you for providing the information for the road project associated with Minnewashta Regional Park. This office supports your efforts to submit an application for the State Park Road Account program associated with this park. If you should have any additional questions regarding the State Park Road account program, please contact Dave Sobania at 216-828-2620. Good luck with your application. Sincerely, . atjA"� Rachel Hintzman Area Parks and Trail Supervisor Rachel. L. H intzman ®state. mn.us Cc: Kim Lockwood, DNR Parks and Trails Dave Sobania, SPRA/Regional Engineer Wae.Inndmgw AN EQUAL DPPURILIN IIY EMPLOYER *i PRINTED ON RELYO E0 PAPER CONTAINING AMIIIIM1IUM1I OF 10%POSLll NSUMER WAStF Spreiter, Krista From: Martin Walsh [mwalsh@co.carver.mn.us] Sent: Wednesday, July 30, 2014 8:09 AM To: Spreiter, Krista; Andrea Moffatt (amoffatt@wsbeng.com) Subject: RE: Lake Minnewashta Regional Park Improvements Attachments: 2011 Final Grant application - SPRA.pdf Hi Krista, Grant funding is provided through the State of MN, State Park Road Account and also through the Legacy Amendment for Parks and Trails. The project is identified in CIP as well as the park master plan for the park. The need for the improvement is documented in the attached application for State Park Road Account Grant Application which discusses safety improvements and other aspects of the project. Paving the access to the dog park is within the scope of work that we are soliciting bids for. However, it is not funded by the funds for the State Park Road Account. Ultimately, the bid for the project will determine the scope of work that can be achieved with the funding. If paving the road to the dog park is beyond the budget, we would not be able to pave with this project but would be a continued consideration as additional paving work in the park is completed. The priority which is established by Funding from the State Park Road Account includes the main road to the beach and bypass lane at the entrance to the park. With regard to the trail at the Boat Launch, yes. If you have any other question please provide them to me before Friday of this week. I will be out of the office all of next week. Thanks! Marty Martin J. Walsh Carver County Parks Director Carver County Parks 11360 Hwy 212 West Cologne, MN 55322 Office: 952-466-5252 Fax: 952-466-5223 [,(,Y1 Si'YIACi-�W� OF C- ex*ir' yo_,, - oakov)s -twU a- &64e-- 0'_ E:t. --0'_ so-;&� "The unauthorized disclosure or interception of e-mail is a federal crime. See 18 U.S.C. SEC. 2517(4). This e-mail is intended only for the use of those whom it is addressed and may contain information which is privileged, confidential and exempt from disclosure under the law. If you have received this e-mail in error, do not distribute or copy it. Return it immediately to the sender with attachments, if any, and notify the sender by telephone." From: Spreiter, Krista[mailto:KSpreiter(olci.chanhassen.mn.us] Sent: Wednesday, July 30, 2014 7:43 AM To: Andrea Moffatt (amoffatt(&wsbeng.com); Martin Walsh Subject: Lake Minnewashta Regional Park Improvements Good Morning, I am currently working on my staff report for the LMRP Improvements Project Wetland Alteration Permit/Water Resources Joint Application and have some additional questions/clarification that is needed. Can one or both of you please reply to the following: • Who provided the grant funding for the project? • Is the project, or need for the project, identified in any Plans, CIP, etc.? • Can you please expand on the need for the project. Increased boat traffic was mentioned. Any other safety studies, traffic or park use studies, surveys, etc.? • Will the existing access to the dog park be paved as part of the project? • Does the 'new' bituminous trail mentioned in the application just consist of the section of trail to be realigned with the reconstruction of the boat launch? Thank you in advance for your help. Krista J. Spreiter Natural Resources Technician City of Chanhassen 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 kspreiter@ci.chanhassen.mn.us Direct Phone: 952.227.1173 COMMUNITY DEVELOPMENT DEPARTMENT Planning Division — 7700 Market Boulevard Mailing Address — P.O. Box 147, Chanhassen, MN 55317 Phone: (952) 227-1300 / Fax: (952) 227-1110 * CITY OF CHANHASSEN APPLICATION FOR DEVELOPMENT REVIEW Date Filed: 60 -Day Review Deadline: Planner: Case #: Section 1: Application Type (check all that apply) ❑ Comprehensive Plan Amendment ......................... $600 ❑ Subdivision ADDITIONAL REQUIRED FEES: ❑ Notification Sign ................................................... $200 (City to install and remove) ❑ Property Owners' List within 500' ........ $3 per address (City to generate — fee determined at pre -application meeting) ❑ Escrow for Recording Documents.. $50 per document (CUP/SPRNACNAR/WAP/Metes & Bounds Subdivision) ❑ ❑ Minor MUSA line for failing on-site sewers ..... $100 ❑ Conditional Use Permit ❑ Metes & Bounds .........................$300 ❑ Single -Family Residence ................................ $325 ❑ All Others......................................................... $425 ❑ Interim Use Permit ❑ In conjunction with Single -Family Residence.. $325 applications through the ❑ All Others......................................................... $425 ❑ Grading >_ 1,000 cubic yards ........................... UBC ❑ Rezoning ❑ Planned Unit Development (PUD) .................. $750 ❑ Minor Amendment to existing PUD ................. $100 ❑ All Others......................................................... $500 ❑ Sign Plan Review ................................................... $150 ❑ Site Plan Review ❑ Administrative.................................................. $100 ❑ Commercial/Industrial Districts* ...................... $500 Plus $10 per 1,000 square feet of building area Include number of existing employees: and number of new employees: ❑ Residential Districts ......................................... $500 Plus $5 per dwelling unit ADDITIONAL REQUIRED FEES: ❑ Notification Sign ................................................... $200 (City to install and remove) ❑ Property Owners' List within 500' ........ $3 per address (City to generate — fee determined at pre -application meeting) ❑ Escrow for Recording Documents.. $50 per document (CUP/SPRNACNAR/WAP/Metes & Bounds Subdivision) ❑ Create 3 lots or less ........................................ $300 ❑ Create over 3 lots .......................$600 + $15 per lot ❑ Metes & Bounds .........................$300 + $50 per lot ❑ Consolidate Lots..............................................$150 ❑ Lot Line Adjustment ......................................... $150 ❑ Final Plat*........................................................$250 `Requires additional $450 escrow for attorney costs. Escrow will be required for other applications through the development contract. ❑ Vacation of Easements/Right-of-way................... $300 (Additional recording fees may apply) ❑ Variance............................................................... $200 ❑ Wetland Alteration Permit ❑ Single -Family Residence ............................... $150 ❑ All Others ....................................................... $275 ❑ Zoning Appeal ...................................................... $100 ❑ Zoning Ordinance Amendment ............................ $500 NOTE: When multiple applications are processed concurrently, Te appropriate fee shall be charged for each application. (Refer to the appropriate Application Checklist for required submittal information that must accompany this application) TOTAL FEES: $ VJAtV -O Received from: Date Received: Check Number: Project Name: Lake Minnewashta Regional Park Improvements Project Property Address or Location: 6900 Hazeltine Blvd, Chanhassen, MN 55317 Parcel #: "°° °° m °'°° °° °°°° °° °° Legal Description: Total Acreage: 1037;.07,fU• d,m,e Wetlands Present? Present Zoning: Parks & Open Space, Rural Residential Present Land Use Designation: Parks & Open Space Existing Use of Property: County Regional Park ® Yes ❑ No Requested Zoning: No Change Requested Land Use Designation: No Change Description of Proposal: Improvements to include: 5001f of trail realignment, reconstruction and expansion of existing boat launch, resurface of existing gravel access roads to bituminous surface, and bypass lane and turnaround at the park's entrance. ❑ Check box if separate narrative is attached Section 3: Property Owner and Applicant Information APPLICANT OTHER THAN PROPERTY OWNER: In signing this application, I, as applicant, represent to have obtained authorization from the property owner to file this application. I agree to be bound by conditions of approval, subject only to the right to object at the hearings on the application or during the appeal period. If this application has not been signed by the property owner, I have attached separate documentation of full legal capacity to file the application. This application should be processed in my name and I am the party whom the City should contact regarding any matter pertaining to this application. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. I certify that the information and exhibits submitted are true and correct. Name: Contact: Address: Phone: City/State/Zip: Cell: Email: Fax: Signature: Date: PROPERTY OWNER: In signing this application, I, as property owner, have full legal capacity to, and hereby do, authorize the filing of this application. I understand that conditions of approval are binding and agree to be bound by those conditions, subject only to the right to object at the hearings or during the appeal periods. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. I certify that the information and exhibits submitted are true and correct. Name: Carver County Parks Contact: Martin Walsh Address: 11360 Hwy 212, Suite 2 Phone: (952) 466-5250 City/State/Zip: Cologne, MN 55322 Cell: Email: mwalsh@co.carver.mn.us Fax: (952) 466-5223 Date: This application must be completed in full and be typewritten or clearly printed and must be accompanied by all information and plans required by applicable City Ordinance provisions. Before filing this application, refer to the appropriate Application Checklist and confer with the Planning Department to determine the specific ordinance and applicable procedural requirements. A determination of completeness of the application shall be made within 15 business days of application submittal. A written notice of application deficiencies shall be mailed to the applicant within 15 business days of application. PROJECT ENGINEER (if applicable) Name: WSB & Associates Contact: Andi Moffatt Address: 701 Xenia Avenue South, Suite 300 Phone: (763) 541-4800 City/State/Zip: Minneapolis, MN 55416 Cell: Email: AMoffatt@wsbeng.com Fax: Who should receive copies of staff reports? 'Other Contact Information: ❑ Property Owner Via: ❑ Email ❑ Mailed Paper Copy Name: ❑ Applicant Via: ❑ Email ❑ Mailed Paper Copy Address: ❑ Engineer Via: ❑ Email ❑ Mailed Paper Copy City/State/Zip: ❑ Other' Via: ❑ Email ❑ Mailed Paper Copy Email: COMMUNITY DEVELOPMENT DEPARTMENT Planning Division - 7700 Market Boulevard Mailing Address -P.O. Box 147, Chanhassen, MN 55317 Phone: (952) 227-1300 / Fax: (952) 227-1110 APPLICATION FOR DEVELOPMENT REVIEW Date Fllad: 60 -Day Review Deadline: Planner Cosa W Section 1; Application apply) ❑ Comprehensive Plan Amendment .........................$500 ❑ Subdivision ADDITIONAL REQUIRED FEES: ❑ Notification Sign ................................................... $200 (City to install and remove) ❑ Property Owners' List within 500' ........ $3 per address (City to generate—tee determined at pre -application meeting) ❑ Escrow for Recording Documents.. $50 per document (CUP/SPRNACNARANAP/Metse & Bounds subdivision) Property Address qr Location: 70641300 Parcel #: lb Total Acreage: /0 ❑ Create 3 lots or less ....... ... .......................... $300 ❑ Create over 3 lots ................ _..... $800 + $15 per lot ❑ Metes & Bounds .........................$300 + $50 per lot ❑ Consolidate Lots..............................................$150 ❑ Lot Line Adjustment.........................................$150 ❑ Final Plat* ........................................................$250 'Requlms additional $450 escrow, for attorney costs. Escrow will be required for other applications through the development contract. ❑ Vacation of Easements/Right-of-way................... $300 (Additional recording fees may appy) ❑ Variance ...............................................................$200 K Wetland Alteration Permit ❑ Single -Family Residence ............. .............. ..$150 [yL All Others ....................................................... $275 ❑ Zoning Appeal ........ ......................................... _... $100 ❑ Zoning Ordinance Amendment ............................ $500 NOTE: When multiple applications are processed concurrently, the appropriate fee shall be charged for each eppllcation. (Refer to me appropriate Application Checklist for required submittal Information that must accornpany this applicalMn) TOTALFEES:$ uJPvi U1,0 Received from: Date Received: Check Number: MORRIS �f IM Present Zoning: Eng" t pP9NePPt1 ZgJe_ Requested Zoning: NO CHHAItrE, Present Land Use Designation: PR9kt f- I)P"I Requested Land Use Designation: NO Gf/9'h)ble- Existing Use of Property: FG all l gi,J?Frtzr' Description ofProposal: 0912 IMARDVEAIDJMiS7D MaJaFiJnRFiA I74&nDNIRI 4AD -hFrYr -ru❑ Check box if separate narrative is attached �O *A ` k' 0.N ❑ Minor MUSA line for falling on-site sewers..... $100 ❑ Conditional Use Permit ❑ Single -Family Residence ................................ $325 ❑ All Others......................................................... $425 ❑ Interim Use Permit ❑ In conjunction with Single -Family Residence.. $325 ❑ All Others .........................................................$425 ❑ Grading 2 1,000 cubic yards ........................... UBC ❑ Rezoning ❑ Planned Unit Development (PUD) ... .............. $750 ❑ Minor Amendment to existing PUD ................. $100 ❑ All Others ................... ..................................... $500 ❑ Sign Plan Review .............................»....................$150 ❑ Site Plan Review ❑ Administrative ..................................................$100 ❑ Commercial/industrial Districts* ......................$500 Plus $10 per 1,000 square feet of building area 'Include number of existing employees: and number of new smoloyeas: ❑ Residential Districts.........................................$500 Plus $5 per dwelling unit ADDITIONAL REQUIRED FEES: ❑ Notification Sign ................................................... $200 (City to install and remove) ❑ Property Owners' List within 500' ........ $3 per address (City to generate—tee determined at pre -application meeting) ❑ Escrow for Recording Documents.. $50 per document (CUP/SPRNACNARANAP/Metse & Bounds subdivision) Property Address qr Location: 70641300 Parcel #: lb Total Acreage: /0 ❑ Create 3 lots or less ....... ... .......................... $300 ❑ Create over 3 lots ................ _..... $800 + $15 per lot ❑ Metes & Bounds .........................$300 + $50 per lot ❑ Consolidate Lots..............................................$150 ❑ Lot Line Adjustment.........................................$150 ❑ Final Plat* ........................................................$250 'Requlms additional $450 escrow, for attorney costs. Escrow will be required for other applications through the development contract. ❑ Vacation of Easements/Right-of-way................... $300 (Additional recording fees may appy) ❑ Variance ...............................................................$200 K Wetland Alteration Permit ❑ Single -Family Residence ............. .............. ..$150 [yL All Others ....................................................... $275 ❑ Zoning Appeal ........ ......................................... _... $100 ❑ Zoning Ordinance Amendment ............................ $500 NOTE: When multiple applications are processed concurrently, the appropriate fee shall be charged for each eppllcation. (Refer to me appropriate Application Checklist for required submittal Information that must accornpany this applicalMn) TOTALFEES:$ uJPvi U1,0 Received from: Date Received: Check Number: MORRIS �f IM Present Zoning: Eng" t pP9NePPt1 ZgJe_ Requested Zoning: NO CHHAItrE, Present Land Use Designation: PR9kt f- I)P"I Requested Land Use Designation: NO Gf/9'h)ble- Existing Use of Property: FG all l gi,J?Frtzr' Description ofProposal: 0912 IMARDVEAIDJMiS7D MaJaFiJnRFiA I74&nDNIRI 4AD -hFrYr -ru❑ Check box if separate narrative is attached �O *A ` k' 0.N Sectioi 1 • • 1 APPLICANT OTHER THAN PROPERTY OWNER: In signing this application, I, as applicant, represent to have obtained authorization from the property owner to file this application. I agree to be bound by conditions of approval, subject only to the right to object at the hearings on the application or during the appeal period. If this application has not been signed by the property owner. I have attached separate documentation of fun legal capacity to file the application. This application should be processed In my name and I em the party whom the City should contact regarding any matter pertaining to this application. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. I certify that the Information and exhibits submitted are true and correct. Name: Contact: Address: Phone: City/State/Zlp: Cell: Email: Fax: Signature: Date: PROPERTY OWNER: In signing this application, 1, as property owner, have full legal capacity to, and hereby do, authorize the filing of this application. I understand that conditions of approval are binding and agree to be bound by those conditions, subject only to the right to object at the hearings or during the appeal periods. 1 will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. I certify that the Information and exhibits submitted are true and correct. Name: (�1kigyL CDOt4 4 PAt2 6 Contact: Alltttz-nt4 V-)ftL A Address: ktwpa kiy)'4 717-/CurTF.2 Phone: 952.4(Ao•5250 City/State/Zip: CAt.066rN& , tVW 558222 Cell: Email: 0I 0. . mn. AAs Fax: 952 . 4U Ip, 5 223 Signature:(( Date: '��t � 14 s v i r"Y— This application must be complet96 in full and be typewritten or dearly printed and must be accompanied by all Information and plans required by applicable City Ordinance provisions. Before filing this application, refer to the appropriate Application Checklist and confer with the Planning Department to determine the spechic ordinance and applicable procedural requirements. A determination of completeness of the application shall be made within 15 business days of application submittal. A written notice of application deficiencies shall be mailed to the applicant within 15 business days of application. PROJECT ENGINEER (if applicable) Name: Contact: Address: Phone: City/State/Zip: cell, Email: Fax r- Section 4* Notification'llinformation Who should receive copies of staff reports? 'Other Contact Information: ❑ Property Owner Via: ❑ Email ❑ Mailed Paper Copy Name: ❑ Applicant Via: ❑ Email ❑ Mailed Paper Copy Address: ❑ Engineer Via: ❑ Email ❑ Mailed Paper Copy City/State/Zip: ❑ Other' Via: ❑ Email ❑ Mailed Paper Copy Email: COMMUNITY DEVELOPMENT DEPARTMENT Planning Division - 7700 Market Boulevard Mailing Address - P.O. Box 147, Chanhassen, MN 55317 Phone: (952) 227-1300 / Fax: (952) 227-1110 Date Filed: * CITY OFCHANHASSEN APPLICATION FOR DEVELOPMENT REVIEW 60 -Day Review Deadline: Planner: Section 1: Application Type (check all that apply) ❑ Comprehensive Plan Amendment ......................... $600 ❑ Minor MUSA line for failing on-site sewers..... $100 ❑ Conditional Use Permit ❑ Single -Family Residence ................................ $325 ❑ All Others......................................................... $425 ❑ Interim Use Permit ❑ In conjunction with Single -Family Residence.. $325 ❑ All Others ......................................................... $425 ❑ Grading >- 1,000 cubic yards ........................... UBC ❑ Rezoning ❑ Planned Unit Development (PUD) .................. $750 ❑ Minor Amendment to existing PUD ................. $100 ❑ All Others......................................................... $500 ❑ Sign Plan Review ................................................... $150 ❑ Site Plan Review ❑ Administrative ..................................................$100 ❑ Commercial/Industrial Districts'......................$500 Plus $10 per 1,000 square feet of building area Include number of existing employees: and number of new employees: ❑ Residential Districts ......................................... $500 Plus $5 per dwelling unit ADDITIONAL REQUIRED FEES: ❑ Notification Sign ................................................... $200 (City to install and remove) ❑ Property Owners' List within 500' ........ $3 per address (City to generate—fee determined at pre -application meeting) ❑ Escrow for Recording Documents.. $50 per document (CUP/SPRIVAC/VAR/WAP/Metes & Bounds Subdivision) Project N Property Parcel #: Total Act ❑ Subdivision Case #: ❑ Create 3 lots or less ........................................ $300 ❑ Create over 3 lots.......................$600 + $15 per lot ❑ Metes & Bounds .........................$300 + $50 per lot ❑ Consolidate Lots..............................................$150 ❑ Lot Line Adjustment ......................................... $150 ❑ Final Plat*........................................................$250 'Requires additional $450 escrow for attorney costs. Escrow will be required for other applications through the development contract. ❑ Vacation of Easements/Right-of-way................... $300 (Additional recording fees may apply) ❑ Variance............................................................... $200 9L Wetland Alteration Permit ❑ Single -Family Residence ............................... $150 ®. All Others ....................................................... $275 ❑ Zoning Appeal ...................................................... $100 ❑ Zoning Ordinance Amendment ............................ $500 NOTE: When multiple applications are processed concurrently, the appropriate fee shall be charged for each application. (Refer to the appropriate Application Checklist for required submittal inrormation that must accompany this application) TOTAL FEES: $ tk)RIUfd Received from: Date Received: Check Number: Section 2: Required Information Present Zoning: i EL6 t OP6Ai(,T qf.F 10'} Requested Zoning: A)O c ftr8A16F, Present Land Use Designation: Prgkt +- DPFAI Requested Land Use Designation: NO cypry&p, Existing Use of Property: eg-CC ,in IAL- 1?04 e, Description of Proposal: 690 rrVI1rROU€J1ifJY1S 1D MrAlll)F1�f#�T�r R�LstflN1AL Vf}R r -r�4rtr ❑ Check box if separate narrative is attached A��D SW'V-Alk� tuRN APPLICANT OTHER THAN PROPERTY OWNER: In signing this application, I, as applicant, represent to have obtained authorization from the property owner to file this application. I agree to be bound by conditions of approval, subject only to the right to object at the hearings on the application or during the appeal period. If this application has not been signed by the property owner, I have attached separate documentation of full legal capacity to file the application. This application should be processed in my name and I am the party whom the City should contact regarding any matter pertaining to this application. I will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. I certify that the information and exhibits submitted are true and correct. Name: Contact: Address: Phone: City/State/Zip: Cell: Email: Fax: Signature: Date: PROPERTY OWNER: In signing this application, I, as property owner, have full legal capacity to, and hereby do, authorize the filing of this application. I understand that conditions of approval are binding and agree to be bound by those conditions, subject only to the right to object at the hearings or during the appeal periods. 1 will keep myself informed of the deadlines for submission of material and the progress of this application. I further understand that additional fees may be charged for consulting fees, feasibility studies, etc. with an estimate prior to any authorization to proceed with the study. I certify that the information and exhibits submitted are true and correct. Name: 0'PN-Qg*— Coot(Ty PAit-y'6 Contact: (JIRRW( VAs'A Address: 1\3(00 kAW4 2l7-/ Co%TE, 2 Phone: 952.4(a(o 5250 City/State/Zip: CoL�OaNt✓ , MN 55,o22— Cell: Email: M W 0.1,5 h @ Go . ccuyCr. rnn AAs Fax: 952 4(a b. G723 Signature: Date: This application must be completed in full and be typewritten or clearly printed and must be accompanied by all information and plans required by applicable City Ordinance provisions. Before filing this application, refer to the appropriate Application Checklist and confer with the Planning Department to determine the specific ordinance and applicable procedural requirements. A determination of completeness of the application shall be made within 15 business days of application submittal. A written notice of application deficiencies shall be mailed to the applicant within 15 business days of application. PROJECT ENGINEER (if applicable) Name: Contact: Address: Phone: City/State/Zip: Cell: Email: Fax: Section 4: Notification Information Who should receive copies of staff reports? *Other Contact Information: ❑ Property Owner Via: ❑ Email ❑ Mailed Paper Copy Name: ❑ Applicant Via: ❑ Email ❑ Mailed Paper Copy Address: ❑ Engineer Via: ❑ Email ❑ Mailed Paper Copy City/State/Zip: ❑ Other* Via: ❑ Email ❑ Mailed Paper Copy Email: Date: July 25, 2014 City of Chanhassen 7700 Market Boulevard P.O. Box 147 Chanhassen, MN 55317 (952)227-1100 To: Development Plan Referral Agencies From: Planning Department Review Response Deadline: August 6, 2014 By: Krista Spreiter, Natural Resources Technician Subject: Request for Wetland Alteration Permit in conjunction with the Lake Minnewashta Regional Park improvement project on 10.37 acres of property zoned Rural Residential (RR) and located at 6900 Hazeltine Boulevard. Applicant/Owner: Carver County Planning Case: 2014-23 PID: 25-0041300,25-0040600,25-0040700&25-0041200 The above-described application for approval of a land development proposal was filed with the Chanhassen Planning Department on July 23, 2014. The 60 -day review period ends September 16, 2014. 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, sheet extensions or improvements, and utilities. Where specific needs or problems exist, we would like to have a written report to this effect fiom 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 August 19, 2014 at 7:00 p.m. in the Council Chambers at Chanhassen City Hall. We would appreciate receiving your comments by no later than August 6, 2014. You may also appear at the Planning Commission meeting if you so desire. Your cooperation and assistance is greatly appreciated. 1. City Departments: a. City Engineer b. City Attorney c. City Park Director d. Fire Marshal e. Building Official L 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 (CenturyLink) 10. Electric Company (Xcel Energy) 11. Mediacom 12. CenterPoint Energy Date: 8/28/2014 Time: 4:17 PM To: City of Chanhassen g. 9522271110 P: 1/3 Please see the attached document as proof of insurance coverage. J.A. Price Agency, Inc. 6640 Shady Oak Road, Suite 500 Eden Prairie, MN 55344 Phone: 952-9448790 Fax: 952-9440097 This fax, including attachments, is intended for the exclusive use of the addressee and may contain proprietary, confidential or privileged information. If you are not the intended recipient, or an employee or agent responsible for delivering the message to the intended recipient, any dissemination, use, distribution or copying is strictly prohibited. If you have received this e-mail in error, please contact us immediately and permanently delete the original and destroy all copies.