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1g. Wetland Permit for Lake Drive & Market Blvd. CITY O F P.C. DATE: June 14 , 19 CHANHASSEN' C.C. DATE: June 26 , 1989 ' r CASE NO: 89-5 WAP Prepared by: Olsen/v STAFF REPORT 4 PROPOSAL: Wetland Alteration Permit for the Partial Construction of Lake Drive and TH l01/Market Boulevard Z V LOCATION: South of Hwy. 5 and North of Lake Susan APPLICANT: City of Chanhassen Q , 4 PRESENT ZONING: IOP, Industrial Office Park - _ ACREAGE: .__.___ DENSITY: , ADJACENT ZONING AND LAND USE: N- IOP & OI; vacant & Church S- IOP; Rosemount site & city park E- IOP; vacant W- IOP; Rosemount/Co. Rd. 17 W WATER AND SEWER: PHYSICAL CHARAC. : 2000 LAND USE PLAN: 11 Wk,All • \:\ p 4,1;„t: ,,, 400,41, _ is at n Nr4 timmilp.MS ph. In % \ lip saisf:4147 #.1 16011011111 varir• El N.PCS t11nnoKK*�l 000 G i IliliPru— .ill \— _wialatimmail`may .,' �. Ct- J , Wi \ LSE R�� `�.44:�\ �i ■un. ;i o �� a4 ,,� : 721 imp 1 �- i i" I R4 p s »C' ',_ '�,��► �� 5 I I - a i�� lit I Ms. ..auglik• r Sfas! __ems lerrittlr CI. 1 -. �.-6g■giin _. �k: R 12 •-- :am . Mfflo,Ammo- } R 12 8� "y � cr.(4) f w NI , -'"-- - •/VW- I_ . ■ :::: :r" 1� MII . ,- � ! �'_. 3 D l _ P DRIVE \\ O� �\� �� •_,•,- , ._,. .. _ . : � . „A PAC F �� STATE Y '• .444_ O., 1041: 11—°1 �`'� �c� L l am ' ►h` � '.►i� a y` ': kelp i , ', ''`-L4-111101 ,r 1. . . .. , , V /�_. __�— -- -1 D4K0 t.::r V y cil" NEN I — ;.cie o SUSAN N > li °° RD ;`∎ R I cn 1 --m--_______,----‘ lj PUD — R p a rl I `, \ � — _ I , • \. 86 TH ST PC"? �� Lake Drive WAP June 21, 1989 Page 2 APPLICABLE REGULATIONS Section 20-421 requires a wetland alteration permit for any digging, dredging, or filling of a Class A or B wetland. Section 20-437 allows a minimum amount of filling of a wetland with the following considerations : 1 . Any filling shall not cause total natural flood storage capa- city of the wetland to fall below or fall below further the projected volume of runoff from the watershed generated by a 5 . 9" rainfall in 24 hours. Since the total amount of filling which can be permitted is limited apportionment of fill opportunities for other properties abutting the wetland shall be considered. 2 . Any filling shall not cause total nutrient stripping capacity of the wetland to be diminished to an extent that is detri- mental to any area river, lake or stream. 3 . Only fill free of chemical pollutants and organic waste may be used. 4 . Filling shall be carried out so as to minimize the impact on vegetation. 5 . Filling the wetland areas will not be permitted during water- fowl breeding or fish spawning season unless it is determined by the city that the wetland is not used for waterfowl breeding or fish spawning. Section 20-438 dredging will be allowed only when it will not have a net adverse effect on the ecological or hydrological charactertics of the wetlands . Dredging when allowed shall be limited as follows : 1. It shall be located as to minimize the impact on vegetation. 2 . It shall not adversely change water flow. 3 . The size of the dredged area shall be limited to the minimum required for the proposed action. 4 . Disposal of the dredged material is prohibited within the wetland district unless specifically authorized in the wetland alteration permit. 5 . Disposal of any dredged material shall include proper erosion control and nutrient retention measures. 6 . Dredging in any wetland areas is prohibited during waterfowl breeding season or fish spawning season, unless it is deter- mined by the city that the wetland is not used for waterfowl breeding or fish spawning. Lake Drive WAP June 21, 1989 Page 3 ANALYSIS The City is applying for a wetland alteration permit to allow the construction of Lake Drive and Market Boulevard. Market Boulevard will be extended south from Hwy. 5 to just south of the proposed access to Rosemount property and Lake Drive will be extended from Market Boulevard to Powers Boulevard. Within the proposed road alignment, there exists five wetlands protected by the city. The first plan sheet shows an overall plan of the pro- posed Market and Lake Drive right-of-way and the five wetlands impacted by the construction of the streets . Two of the wetlands are Class A wetlands ( #3 and #5) and the remaining three are Class B wetlands ( #1, #2 and #4) . The project manager for the construction of Market Boulevard and Lake Drive is Gary Ehret from BRW. Mr. Ehret has provided a memo detailing the project and the wetlands that will be impacted and proposed mitigative measures (Attachment #1) . The DNR, Corps of Engineers, and Fish and Wildlife Service have been closely involved with staff in determining the location of and the impact to the wetlands with recommendations for mitiga- tive measures. The following table summarizes the wetlands that will be impacted by Lake Drive and Market Boulevard. Wetland Type Area of Impact Basin Size Wetland #1 Class B 1. 5 acres 4.1 acres Wetland #2 Class B . 01 acres 1.1 acres Wetland #3 Class A . 14 acres 3 .5 acres Wetland #4 Class B 1 . 05 acres 2 .5 acres Wetland #5 Class A (Type VII) . 35 acres 2 . 5 acres The #1 wetland is located east of Powers Boulevard and west of Lake Susan Park. The #1 wetland is a Class B wetland which is of marginal quality. Lake Drive is being located through the most northerly portion of the wetland ( 1. 5 acres) . The #2 wetland is a Class B wetland of marginal quality. Lake Drive will be impacting a small southerly portion of the wetland ( . 01 acres) . The #3 wetland is a Class A wetland of good quality. This wetland was protected as part of the Rosemount Site Plan approval. The location of Lake Drive will be filling a small portion along the northerly edge of the Class A wetland ( 1. 4 acres) . Many alter- natives were reviewed by the city to reduce any impact to the #3 wetland and the proposed alignment of Lake Drive proposes the least amount of impact to the Class A wetland. Lake Drive WAP June 21 , 1989 Page 4 The #4 wetland has already been significantly altered as part of the Rosemount site plan. Essentially, this Class B wetland is now a storm water detention pond. The city is still including the 1. 05 acres of area that will be impacted by Lake Drive and Market Boulevard in terms of replacement within the mitigation areas. The #5 wetland is a Class A Type VII wetland which is a lowland forested area. The proposed Market Boulevard will be impacting the most southwesterly portion of the wetland ( approximately .35 acres) . The #5 wetland is a very high quality wetland which should be protected as best possible. The first set of plans show Lake Drive continuing through the #5 wetland. Lake Drive will need to be realigned at this point to preserve the #5 wetland. The right-of-way that is being proposed at this time impacts a marginal area of the #5 wetland. The higher quality portion of the wetland is located to the east and should be pre- served. Even though only a portion of the #5 wetland is being impacted, staff is still working with BRW to possibily move Market Boulevard further to the west and to relocate the entrance into Rosemount in order to further redtce the impact to the #5 wetland. MITIGATION There is a total of 3 . 85 acres of wetland that will impacted by Lake Drive and Market Boulevard. The Fish and Wildlife Service has recommended that a 1 to 1 offset ratio be provided to compen- sate for lost wetland area. The #1 mitigation area located imme- diately east of Powers Boulevard, south of proposed Lake Drive and west of Lake Susan Park is providing for 3 acres of wetland mitigation. The remaining . 85 acres of mitigation is being pro- vided on mitigation area #2 which is located on the southeast corner of the Eckankar property north of Hwy. 5 and west of Powers Boulevard. Staff has been working with the Fish and Wildlife Service to provide mitigation areas which meet the stan- dards of the Fish and Wildlife Service and Corps of Engineers. Page 6 of the letter from Gary Ehret dated June 14, 1989 (Attachment #1) specifically states the criteria that will be applied in the development of the #1 and #2 mitigation areas. The #2 mitigation area is currently an existing wetland. In order for improvements to this wetland to be made and for that to act as mitigation for a reduction of other wetlands within the City of Chanhassen, the Fish and Wildlife Service has recommended that a separate storm water retention basin be used as a two pond system to absorb the most severe impacts from water level flu- cuation and roadway contaminants prior to it entering the larger existing wetland. The city is in the process of acquiring the property on the Eckankar site and feels that the criteria pro- vided by the Fish and Wildlife Service along with the two pond system can be provided at the site to serve as a mitigation to the impact of the other five wetlands . r Lake Drive WAP June 21, 1989 Page 5 SUMMARY The proposed improvements to Lake Drive and Market Boulevard will be impacting five wetlands protected by the wetland ordinance. The alignment of Market Boulevard and Lake Drive has been chosen so that it will result in the least impact to the existing wetlands, primarily the more important wetlands #3 and #5. Staff is comfortable with the mitigation that is being provided to replace the impacts to the five wetlands. The Fish and Wildlife and Corps of Engineers have been closely involved with this pro- ject to guarantee that the mitigation will meet the criteria of the Fish and Wildlife Service and Corps of Engineers and will benefit the City of Chanhassen. RECOMMENDATION Planning staff recommends the Planning Commission adopt the following motion: "The Planning Commission recommends approval of Wetland Alteration Permit #89-5 for the construction of Lake Drive and Market Boulevard with the following conditions : 1 . The mitigation areas #1 and #2 as shown on Figure 1 will pro- vide the criteria as recommended on Page 6 of letter from Gary Ehret dated June 14, 1989. 2 . The mitigation area #2 would be initiated within the next 18 I months and a separate storm water retention basin shall be used as a two pond system to absorb the most severe impacts from water level flucuation and roadway contaminants entering the adjacent wetland. 3 . The applicant must receive permit approval from the Corps of Engineers and the Watershed District. 4 . Staff will work with the alignment of Market Boulevard and Lake Drive to reduce the amount of impact to the #5 wetland. " PLANNING COMMISSION ACTION On June 21, 1989, the Planning Commission recommended approval of the Wetland Alteration Permit #89-5 subject to staff' s recommen- _ dations . The Commission amended condition #4 to read as follows : 4 . Staff will work with the applicant of Market Boulevard and Lake Drive to reduce the amount of impact to the #5 wetland. Lake Drive East as depicted on Figure 1 of the plans, east of Market Boulevard and west of TH 101 is not part of this wetland alteration permit application and is not included in this approval. Lake Drive WAP June 21, 1989 - Page 6 CITY COUNCIL RECOMMENDATION Staff recommends the City Council adopt the following motion: "The City Council approves Wetland Alteration Permit #89-5 for the construction of Lake Drive and Market Boulevard with the following conditions : 1. The mitigation areas #1 and #2 as shown on Figure 1 will pro- vide the criteria as recommended on Page 6 of letter from Gary Ehret dated June 14, 1989. 2 . The mitigation area #2 would be initiated within the next 18 months and a separate storm water retention basin shall be used as a two pond system to absorb the most severe impacts from water level flucuation and roadway contaminants entering the adjacent wetland. 3 . The applicant must receive permit approval from the Corps of Engineers and the Watershed District. 4 . Staff will work with the applicant of Market Boulevard and Lake Drive to reduce the amount of impact to the #5 wetland. Lake Drive East as depicted on Figure 1 of the plans, east of Market Boulevard and west of TH 101 is not part of this wetland alteration permit application and is not included in this approval. MANAGER' S COMMENTS: Council policy has been to include com- mission minutes with any item appearing on the agenda. An alter- native would be an excerpt of that section of the minutes dealing with the particular item. This item is being submitted to the Council as an exception recognizing the time schedule commitment already having been made for Rosemount and also recognizing a unanimous position from the Planning Commission. Specifically, staff is unaware of any comments/concerns raised by any Planning Commission member which would affect the Council ' s vote on this item. An excerpt of the Planning Commission minutes will be distributed Monday evening. ATTACHMENTS 19 1 . Letter from Gary Ehret dated June 14 , 1989 . 2 . Plans for overall protection. 3 . Detailed wetland plans. 4 . Detailed plan on mitigation area #1. PLANNING zvrf TRANSPORTATION ENGINEERING J URBAN DESIGN BRW. INC THRESHER SQUARE 700 THIRD STREET SOUTH MINNEAPOLIS.MINNESOTA 55115 PHONE 6,2 370-0700 CA 612 370-1378 June 14, 1989 City of Chanhassen 690 Coulter Drive Chanhassen, MN 55317 Attn: JoAnn Olson Assistant City Planner RE: Wetland Alteration Permit City Project 88-22 Lake Drive/TH 101 Alignment Dear JoAnn, As you are aware, the City of Chanhassen has undertaken the construction of Lake Drive between County Road 17 (Powers Boulevard) and Market Boulevard (TH 101 realigned). The primary function of these roadways will be to provide access to the new Rosemount facility currently under construction. Additional development is occurring on Lots 1, 2 and 3 on the north side of Lake Drive. This develop- ment will gain primary access from Lake Drive, as will the Lutheran Church of the Living Christ. Ultimately, Market Boulevard will be designated as TH 101 and will carry traffic between TH 212 and TH 5. In order for construction to begin, we have made application for the necessary permits for construction. A wetland alteration permit is necessary for this project. In the following pages we hope to provide the necessary information for this permit application. Project Overview The project is to be constructed through completion of the bituminous base course by December of this year (1989) in order to provide access to Rosemount, prior to the opening of their facility. The soils found within the project area are horrendous thus requiring special construction methods (surcharging the roadway) which have implications on the project schedule. Construction of the project should commence no later than July 15, 1989 and hopefully sooner in order to meet the completion dates established in the development agreements between the City and Rosemount Corporation. We are currently proceeding through the permitting and bidding stage of the project. Bids are to be received Thursday, June 15, 1989, with City Council award tentatively set for June 26, 1989. Permit applications for the project have been made to the following agen- cies: AN AFFILIATE OF THE BENNETT.RINGROSE WOLSFELD JARVIS.GARDNER INC GROUP DAVID J BENNETT DONALD W RINGROSE RICHARD P WOLSFELD PETER E JARVIS LAWRENCE J GARDNER THOMAS F CARROLL CRAIG A AMUNDSEN DONALD E HUNT MARK G SWENSON JOAN B McNAMARA RICHARD D PILGRIM DALE N BECKMANN DENNIS J SUTLIEF JEFFREY L BENSON RALPH C BLUM DAVID L GRAHAM MINNEAPOLIS DENVER PHOENIX TUCSON ST PETERSBURG JoAnn Olson June 14, 1989 Page 2 #1 Minnesota Department of Health #2 Minnesota Pollution Control Agency #3 Metropolitan Waste Control Commission #4 Carver County #5 Mn/DOT #6 Riley-Purgatory-Bluff Creek Watershed #7 Army Corps of Engineers #8 City of Chanhassen The project award will be dependent upon receipt of final approval from all of the permitting agencies. The City of Chanhassen Wetland Alteration Permit is an important element of the review process for this project. In the following paragraphs we would like to summarize the available information to be considered in the wetland alteration permit application review. Existing Conditions The overall project area which is illustrated on Figure 1, consists of the construction of Lake Drive from County Road 17 on the west to Market Boulevard (TH 101) on the east, and the construction of Market Boulevard from TH 5 on the north to future Lake Drive East (Rosemount entrance) on the south. The project has impacts to five (5) existing wetlands as illustrated in Figure 1. The wetlands are primarily Type III (Corp of Engineers designation) wetlands with Wetland #5 being a Type VII wetland. Prior to the Rosemount project, these wetlands consisted of the following basin sizes: Wetland # Existing Basin Size 1 4.1 Ac 2 1.1 Ac 3 3.5 Ac 4 2.5 Ac 5 2.5 Ac* *This basin size is estimated. Final determination has not been made by the Corps of Engineers. Previous review and approval has been given to the Opus Corporation for altera- tion of Wetland #3 and #4 for construction of the Rosemount project. On behalf of the City of Chanhassen, we are submitting for consideration, this permit application for alteration of all five wetlands. Related Information The wetlands affected by this project were initially reviewed by members of our BRW staff in about February of 1989. At that time it was our determination that these wetlands were under the jurisdiction of the Army Corps of Engineers and would require either an individual permit or nation-wide permit from the Corp. 7 JoAnn Olson June 14, 1989 Page 3 We have been working with representatives of the Corp since that time. After reviewing relevant information, it has been the position of the Corp to this date, that, if the requirements of the U.S. Fish and Wildlife Service were met, the Corps of Engineers would issue a nation-wide permit for this project for the alteration of these wetlands. This is currently an on-going permit application. We hope to obtain the final permit from the Army Corps of Engineers within the next three weeks to one month. Site Description The project area consists of agricultural land, wetlands, woodlands and some church property. The new alignment of TH 101 encroaches on two wetlands (#4 and #5) . The Lake Drive alignment also crosses Wetland #4, in addition to three others (#1, #2 and #3). Wetlands 1 and 4 will also be used as detention/sedimentation ponds. Figure 1 identifies the wetland boundaries, wetland types, and areas impacted by road construction and by detention pond use. Figures 2, 3, and 4 illustrate the individual wetland impacts in more detail . Each of the five affected wetlands is described below and the indivi- dual impacts are summarized in Table 1. Wetland 1: Cattails, reed canary grass and goldenrods are the dominant vegeta- l tion within this shallow basin. A small stand of young deciduous trees is invading this wetland on the north side. This wetland drains into Lake Susan; it was ditched in the past for agricultural use and is now only a small remnant of a once larger (approximately four acres) wetland complex. The intact part of the wetland is just under one acre. Wetland 2: This wetland covers just over one acre. It has been previously impacted by the church road and by TH 5. It is currently hydrologically con- nected to Wetland 3 by a culvert. The vegetation consists of cattails and phragmites. Box elder and cottonwoods are found along the outer edges. Wetland 3: This, the largest of the five wetlands, is 3.0 acres in size. A majority of the wetland typically has open water during much of the growing season. Cattails, reed canary grass and smartweed line the outer edges. Box elder, cottonwood and willow are found along the upland edge. Wetland 4: This wetland also has some open water during the early part of the growing season. It is bounded on the north by a steep bank that is covered with sumac. This wetland has been separated from Wetland 3 by a field road, but it remains connected hydrologically through a culvert. The vegetation consists of smartweed in the deepest part, with reed canary grass throughout. Willows and box elder are found along the upland edge. There is a low woodland east of the wetland that may also be seasonally flooded as reed canary grass is found in the understory. Wetland 5: This wetland has occassional/seasonal flooding from a localized watershed. This is considered a Type VII wetland with mature stands of trees. We estimate that it is about 2.5 acres in size; but this is subject to a final determination by the Army Corps of Engineers. JoAnn Olson - June 14, 1989 Page 4 TABLE 1 WETLAND IMPACTS Basin Road Indirect Wetland # Size Impacts Impact (Acres) 1 4.1 1.50 0.8 2 1.1 .01 --- 3 3.5 .14 --- 4 2.5 1.05 --- 5 2.5* .35* --- Total 13.7 ac. 3.05 ac. 0.8 ac. Total impacts: 3.85 acres *The basin size and road impact areas have been subject to confirmation by the Army Corps of Engineers. Purpose and Justification The realignment of this segment of TH 101 is a part of a major roadway realign- ment project being constructed in cooperation with the Minnesota Department of Transportation (Mn/DOT). TH 101 will be relocated from its current location on the east side of the M.J. Ward property to its new location on the west side of the property. The final location for TH 101, as shown, is the result of numerous public meetings, review with Mn/DOT, and deliberations of the City Council of Chanhassen. It is anticipated that TH 101 will serve as a minor north-south arterial between TH 5 and future TH 212. The property between TH 5 and Lake Susan is presently access locked as a result of no access from TH 5, the railroad tracks and Lake Susan. Lake Drive would serve as the only east-west route through this area. It would also serve as a- vital traffic link between TH 101 and CSAH 17 by serving to relieve TH 5 traffic and providing access to the adjacent parcels including The Lutheran Church of the Living Christ. Safe access will be provided from Lake Drive rather than TH 5 as currently exists. JoAnn Olson - June 14, 1989 Page 5 Alternatives Several different alignments of Lake Drive were examined before the proposed alignment was chosen. Other alignments had different tie-in points with CSAH 17 and TH 101, and the placement of the road itself was designed to provide dif- ferent points of access to the major developers of the subdivision. The pro- posed alignment was chosen because it is the best possible route through the site; it avoids wetland impacts where possible, it provides safe access to CSAH 17 and TH 101, and it provides access to the developing Chanhassen Lakes Business Park. Numerous alignments for Market Boulevard were also considered. A final develop- ment of a Market Boulevard alignment is currently being developed. The proposed alignment from Lake Drive East to the north has the impacts outlined in Table 1. Alternatives include a minor alignment shift to the west to reduce the impacts to Wetland #5. Mitigation Wetlands were avoided in the road design process wherever possible; however, due to the location of the Rosemount Corporation development and distance restric- tions on the placement of access points to CSAH 17 and TH 101, some wetland encroachment could not be avoided. As shown above, there is a total of 3.85 acres of wetland that would be impacted by Lake Drive and Market Boulevard. The U.S. Fish and Wildlife has recommended a one to one offset ratio to compensate for lost wetland if possible. We have estimated that the maximum available new area for wetland mitigation "on-site" is about 3.0 acres, leaving a shortfall of 0.85 acres. We are proposing "off-site" mitigation to compensate for the remaining 0.85 acres. Each of the two mitigation areas are described below. Mitigation Area #1 (On-Site) Proposed mitigation would be located just south of the Lake Drive/CSAH 17 inter- section. This area is also proposed by the City to be used as a detention pond. There is adequate space to create a 4.5-acre wetland basin that can satisfy both requirements. The area is adjacent to a City park and could be incorporated into the park system and offer opportunities to park visitors for bird watching, picnicking or just relaxing. The new wetland would have a varied bottom depth to allow for the growth of emergent vegetation and also maintain areas of open_ water. The edges of the wetland would not be mowed to provide transition into the adjacent upland area and to act as a natural buffer from the park area. This wetland is designed to act as a collection basin for much of the sub- division; therefore, a skimmer will be placed at the outlet of this wetland that will control the outflow of road oils and floating debris into Lake Susan. JoAnn Olson June 14, 1989 Page 6 Specifically, the following list of criteria will be applied in the development of the mitigation area: 1. Bottom contours will be varied to promote the growth of emergent vegetation on 60 to 70 percent of the wetland area. Emergents are expected to grow where normal water depths are less than three feet. A 2:1 ratio of emergent aquatic vegetation to open water is the most desirable for wildlife habitat. 2. Pond depths between three and five feet will be included to provide growing conditions for submergent and floating aquatic plants and open water for wildlife. 3. Emergent shoals will be constructed no lower than one foot below the ordi- nary high water mark to avoid unsafe nesting conditions during high water conditions. 4. Grassy areas on the upland should not be mowed unless required to maintain roadway rights-of-way. 5. The Wetland edge will be meandered to provide the maximum amount of upland/lowland edge possible. 6. Upland side slopes will range from 3:1 to 10:1. Side slopes in the wetland will range from 5:1 to 50:1 to provide shallow fringe areas for aquatic vegetation growth. 7. The following seed mixture is recommended for revegetating the spoil bank areas: Seed Pounds/AC PLS* Big Bluestem 7.00 Indian Grass 7.00 Switch Grass 4.00 Oats (nurse crop) 60 * Pure Live Seed 8. Purple loosestrife will be controlled, as necessary, in accordance with currently accepted control procedures. - The organic material excavated from the wetland areas will be used to line the bottom of the mitigation pond. Any extra material will be blended with surface soils and used as top dressing for the road sides and banks. Mitigation Area #2 The City of Chanhassen is currently negotiating with the owners of property lying north and west of the project area (Ekankar Property) but within this watershed, to acquire approximately 23.15 acres to be used for roadway right-of- way, utility easements, storm water detention and wetland mitigation. JoAnn Olson June 14, 1989 Page 7 Acquisition of this property is related to a different project, but affords the City an opportunity to create a wetland mitigation area which will potentially serve several projects. The use of this property for wetland mitigation "credit" for this project has been agreed to in concept by the U.S. Fish and Wildlife subject to two primary conditions: #1 That the City consumate a process creating a wetland in this area within the next 18 months. #2 That a separate storm water retention basin be used as a "two pond" system to absorb the most severe impacts from water level fluctuation and roadway contaminents. Although all details have not been completely finalized for Mitigation Area #2, we feel this is a reasonable/potential alternative. Verbal agreement has been tentatively reached with the Corps of Engineers and Fish and Wildlife for issuance of permits based upon the criteria referenced above for Mitigation Areas #1 and #2. This will be confirmed upon issuance of the final Corps of Engineers Permit shortly. The Riley-Purgatory-Bluff Creek Watershed reviewed and approved this project at their June 7, 1989 meeting. Subject to final approval if the City of Chanhassen, the Army Corps of Engineers, and issuance of permits, construction of this project will begin shortly. We hope this adequately addresses the concerns of Staff, Planning Commission and the City Council , and provides the necessary information, as they consider the permit application. If we can be of further assistance, please contact me. Sincerely, BRW 4 f / , , w Gary A. 'fret, PE Project Manager GAE/sk - . ... c-- \ f. _.,..'\--_______•-- ',‘,,,_ " . -, — st-_-_-..,::_• - -'' , v...-r......-_7:2,„„ -. ..‘ 12 - 1. 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