Loading...
1e. Curry Farms Park Stormwater Pond Improvements & Utica Terrace Wetland Outlet Improvement CITY 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 1591 Park Road Phone 952.227.1300 Fax 952.227.1310 Senior Center Phone 952.227.1125 Fax 952.227.1110 Web Site www.ci.chanhassen.mn.us 1~ - MEMORANDUM TO: Todd Gerhardt, City Manager Lori Haak, Water Resources Coordinator ~ ~.. Don Asleson, Natural Resources Technician .~ FROM: DA TE: September 29, 2006 SUBJ: Curry Farms Park Stormwater Pond Improvements and Utica Terrace Wetland Outlet Improvement. (File Number SWMP#12-30) REQUESTED ACTION Staff requests the City Council approve plans and specifications and authorize advertisement for bid for the Curry Farms Park Stormwater Pond Improvements and Utica Terrace Wetland Outlet. This approval requires a simple majority of those City Council members present. BACKGROUND The two areas have been combined as a single project in an attempt to reduce the construction costs. Our consultant suggested that cost savings may be realized by grouping the proposed projects together to reduce construction costs of the relatively small drainageway improvement. Curry F anns Pond Improvements Within the last two years, the City of Chanhassen has experienced erosion issues near and around the sanitary sewer within Curry Farms drainageway. The erosion problems resulted in an emergency repair of the sanitary sewer below the drainageway last summer. In addition, the Curry Farms drainageway outlets directly into Christmas Lake and has deposited a large amount of sediment into Christmas Lake. The input of additional sediment into Christmas Lake threatens the water quality of this resource. Recently, the City updated the Curry Farms Park layout with the construction of a new playground. This modification to the park has opened up some City-owned parkland and privately-owned land within drainage and utility easements directly upstream of the drainageway to expand upstream water quality and water quantity facilities. Additional maintenance activities proposed in Curry Farms Park include the maintenance of the western pond by removing accumulated sediment. The western pond will have the outlet structure replaced and a new pipe and inlet will be The City of Chanhassen · A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play. Mr. Todd Gerhardt October 10, 2006 Page 2 installed into the eastern pond. These modifications to the outlets and pipe will improve the water quality treatment in both ponds. B~~(I Utica Terrace Wetland Outlet The Utica Terrace wetland outlet is located on the west side of Utica Terrace. The Outlet appears to have been modified by a private property owner which has caused increased erosion within the drainage and utility easement and flooding into surrounding private property. Staff has been aware of the issue for approximately 5 years; however, projects were postponed until it was determined recently that street reconstruction will not occur in the foreseeable future within this neighborhood. The project should be considered a priority due to the failing channel structure. If this structure collapses, a severe erosion problem will likely develop within the easement and private properties that surround the drainageway. This project will extend from the structure under Utica Terrace to Lake Lucy. All improvements will be made within the drainage and utility easements on private properties. The proposed improvements will be compatible with any drainage modifications during road construction and will not need replacement at that time. Mr. Todd Gerhardt October 10, 2006 Page 3 <J Lake Lucy Public Involvement Curry Farms Residents on the southeast pond improvement have been notified of the proposed improvements on two occasions. Both letters sent indicated that the City is pursuing a ponding improvement project that will extend onto the drainage and utility easement on their properties. Residents were encouraged to contact staff with questions or concerns. Staffhad requests from several residents to install stakes at the approximate edge of the drainage and utility easement for reference. Staff installed the staking and provided a letter explaining the stakes are only an estimate of the easement location. Staff will mail residents a letter addressing the timeline for construction prior to the work beginning. If residents on affected properties have additional concerns, staff will meet with them on-site to address their concerns. Mr. Todd Gerhardt October 10, 2006 Page 4 Utica Terrace Outlet The City's consultant, HTPO, met with affected property owners to solicit input on the drainageway design. Staffwill provide residents information as to when the project will be started prior to work beginning. A temporary easement for access will be obtained from one of the property owners for the construction of the channel. DISCUSSION Both Christmas Lake and Lake Lucy are classified as Improve-2 water bodies within the 2006 Surface Water Management Plan (SWMP). This classification implies that the goal for these sub-watersheds is to maintain or improve water quality within these water bodies. The SWMP indicates that Improve-2 sub- watersheds should look for opportunities to apply higher standards to existing infrastructure. In the SWMP, water quantity policy #5 states that, "As opportunities allow through development, redevelopment, and infrastructure replacement, stormwater facilities should be built or upgraded to provide or improve flood management and water quality." Both projects should be considered a step forward in making progress toward the implementation plan within the 2006 Surface Water Management Plan. Item number 4 on Table 45 of the SWMP indicates the City should identify stream bank protection needs at storm outlets. The improvements proposed will make improvements to stream banks that directly discharge into Chanhassen lakes. FUNDING The project is one of the items included in the City's CIP as "SWMP Implementation" (CIP # SWMP-012). Funding for this project will come from the Surface Water Management Fund (Fund 720). SCHEDULE The proposed schedule for the Curry Farms Park and Utica Terrace Improvements is as follows: Approve Plans & Specs and Authorize Ad for Bids Bid Opening Receive Bids A ward Contract Start Construction October 9,2006 November 2,2006 November 22,2006 December 1, 2006 January 3, 2007 Mr. Todd Gerhardt October 10, 2006 Page 5 A copy of the specifications for the recommended improvements is available at City Hall for review. RECOMMENDED MOTION Staff requests the City Council adopt the following motion: "The Chanhassen City Council approves plans and specifications and authorizes advertisement for bid for the Curry Farms Park Stormwater Pond Improvements and Utica Terrace Wetland Outlet." ATTACHMENTS 1. Plans 2. Draft Advertisement 3. CIP SWMP- 12 "SWMP Implementation" c: Charlie Howley, HTPO G:\ENG\Don\Memorandum\SWMP12_30 Improvements. doc ADVERTISEMENT FOR BIDS Sealed Bids will be received by the City of Chanhassen, Minnesota in the City Hall at 7700 Market Boulevard, until 10:00 A.M., C.D.S.T., November 2,2006, at which time they will be publicly opened and read aloud for the furnishing of all labor, materials, and all else necessary for the following: CURRY FARMS PARK AND UTICA TERRACE DRAINAGE IMPROVEMENTS CITY PROJECT NO. SWMP-12-30 In general, work consists of site grading and stOlm sewer improvements with the following approximate quantities: 3,345 2,000 3 20 10 15 81 272 10 200 115 56 0.93 110 0.82 225 CY CY EA SY LF LF LF LF EA TONS LF CY AC SY AC SY Common Excavation (BY) Muck Excavation Clearing & Grubbing Bituminous Path 30" CMP Storm Sewer 12" RCP Storm Sewer 15" RCP Storm Sewer 24" RCP Storm Sewer Storm Sewer Structures Pipe Bedding Material Boulder Channel Edging Riprap Seed and Fiber Blanket Seed and Geomat Seed and Mulch Sod Together with removals, erosion control, castings, adjustments, and other related appurtenances. Bidders desiring a copy of the Bidding Documents may obtain: them from the Issuing Office of Hansen, Thorp, Pellinen, Olson, Inc., 7510 Market Place Drive, Eden Prairie, l\1N 55344, 952-829-0700 upon payment of a non-refundable fee of forty dollars ($ 40.00). Bidding Documents may be seen at the office of the City of Chanhassen and at the Issuing Office. Direct inquiries to Engineer's Project Manager, Charlie Howley at 952-829-0700. Bid Security in the amount of 5 percent of the amount of the Bid must accompany each Bid in accordance with the Instructions to Bidders. The Owner reserves the right to retain the deposits of the 3 lowest Bidders for a period not to exceed 60 days after the date and time set for the Opening of Bids. No Bids may be withdrawn for a period of 60 days after the date and time set for the Opening of Bids. The Owner reserves the right to reject any and all Bids, to waive irregularities and informalities therein, and further reserves the right to award the Contract to the best interests of the Owner. Todd Gerhardt, Manager City of Chanhassen, Minnesota (Publish in the Construction Bulletin on October 20, 2006) p:\200S\OS-Q47\engineering\specs\OS-047 ad for bid.doc .11 ,!\ Ii.! I"~ il !ii I". i: '1[1,.1,..... II 11 \1 Iii Ii ii :1\ 1:1 '.1 \ ;II[ i I i' i II II; I; \1 II 1\ II Ii i! Capital Improvement Program . City of Chonhossen, MN 20(J6 thru 2010 Contact Unassigned Department Surface Water Management Type hnprovement Useful Life Unassigned Category SWMP Priority nla Project # . SWMP-012 Project Name SWMP Implementation Account # 1 720-0000-4300 Aceount # 3 Accoimt #2 Total Project Cost $1,500,000 Description I This project implements projects identified as high priority by the City's Surface Water Management Plan, the National Pollutant Discharge Elimination System (NPDES) Phase n permit, City Council and/or City staff. Justljlclllion I These projects are necessary to meet state and federal government requirements for stonn drainage; address stonn water issues in existing deVelopments; maintain existing infrastructure; and construct the infrastructure recommended by the City's Surface Water Management Plan. Expenditures Construction 2006 . 300,000 300,000 2007 300,000 300,000 2008 300,000 300,000 2009 300,000 300,000 2010 300,000 300,000 Total 1,500,000 1,500,000 Total Funding Sources Surface Water Utility Fund Total 2006 300,000 300,000 2007 300,000 300,000 2008 300,000 300,000 2009 300,000 300,000 2010 300,000 300,000 Total 1,500,000 1,500,000 Operlllio1U1l ]mplldlOther I Citywide. No map. 126