Agenda - Council - 06/12/2012 - Laserfiche WebLink

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They will also contact a draintile company to evaluate the installation of a new system along the fairway. They are also interested in removing sediment from behind the dam so that they can re -install a floating fountain. Staff will assist by researching state requirements for disposal of pond dredge material. The City will evaluate options for changing the control structure on the rock dam. Currently there is an open top metal channel approximately 2 feet wide, which directs water over the top of the dam. Rocks are placed against the edges of the channel and as the depth increases water flows over the rocks. There is a metal dam approximately 70 yards upstream which has a flow width of 4 feet. The control structure on the dam should be widened to match the upstream structure, and the elevation of the top may be lowered. Hole #3 and #17 (Area 4 A, B, C) The fairways of Hole #3 and #17 also experienced flooding last summer. These areas receive stormwater runoff from an area north of the golf course. The water passes through several ponds connected by culverts, which form a water hazard on the course. The pipes have shifted over the years, and there are several locations where the upstream invert is lower than the downstream invert, thereby decreasing the capacity of the pipe and holding back flow. The golf course is also interested in dredging a pond in this location. The idea in this location is to replace the pipes with slightly larger pipes to increase flow, and re-establish the proper invert elevations. This work will require coordination with the golf course so that alternate routes around the work areas can be set up before construction begins. Funding Source: The funding source for these improvements is proposed to be the Stormwater Utility Fund. The opinion of probable construction costs, as prepared by Hakanson Anderson, are estimated at $49,000, with a breakdown as follows: Area 1 $ 32,000 Area 2 $ 7,000 Area 3 $ 5,000 Area 4 $ 5,000 Total $ 49,000 There are also engineering costs associated with surveying, design, bidding, staking, inspections, and construction administration, and Hakanson Anderson has submitted a proposal for this work in an amount not to exceed $8,500. Staff Recommendation: Staff recommends authorizing the proposed storm sewer improvements for the Rum River Hills Golf Club; including a contract with Hakanson Anderson for the preparation of plans and specifications, surveying, staking, inspections, and construction administration in an amount not to exceed $57,500. -and- Authorization to solicit quotes to complete the improvements. Committee Action: Motion to authorize the proposed storm sewer improvements for the Rum River Hills Golf Club; including a contract with Hakanson Anderson for the preparation of plans and specifications, surveying, staking, inspections, and construction administration in an amount not to exceed $57,500. -and- Motion to authorize soliciting quotes to complete the improvements. Attachments