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040389 CC SP Min . . . CITY OF SHOREWOOD SPECIAL COUNCIL MEETING MONDAY. APRIL 3. 1989 COUNCIL CHAMBERS 5755 COUNTRY CLUB RD 7:30 P.M. M I NUT E S ROLL CALL A special meeting was called to order by Mayor Haugen at 7:35 p.m. on Monday, 3 April 1989. to discuss the drainage study for the Glen Road/County Road 19 area. Present: Mayor Haugen. Counci1members Gagne and Stover. (Absent - Brancel). Watten arrived at 7:42 p.m. Staff: Attorney Froberg. Engineer Norton. Surveyors Ames and McGibbon and Planner Nielsen. GLEN ROAD/COUNTY ROAD 19 DRAINAGE AREA STUDY Mr. Jim Mahady, Engineer for the Minnehaha vreek Watershed District and Mr. Woody Love. one of the managers for the District. presented the "Hydrologic Analysis - Glen Road - County Road 19 Subwatershed". dated June 1988. Mr. Mahady explained that the MCWD became involved in the project at the request of the City. because the area in question is affected by drainage from Shorewood. Tonka Bay and the County Road 19 right-of-way. Mr. Mahady summarized the study which proposes two alternatives for resolving drainage problems in the area: 1) a storm sewer system; or 2) a series of ponds connected by short segments of storm sewer which allow a positive outlet for runoff. The study recommends. and the City has adopted. the alternative which utilizes the series of ponds. The recommended alternative has several advantages to it. Maintaining ponding areas where the water naturally collects eliminates the need for constructing small on-site ponding areas on individual sites. These smaller ponding areas. while meeting Watershed District requirements. are typically forced onto the site. resulting in unnecessary site alteration (grading. tree removal. etc.) and are less effective than taking advantage of larger ponds formed by existing topography. The proposed ponding system has been sized on the basis of runoff from projected future land uses in the subject watershed area. Mr. Mahady pointed out that the plan must be considered preliminary pending field checking of actual conditions and preparation of more detailed engineering drawings. At Mr. Nielsen's request. Mr. Mahady explained that the ponds were intended to be "dry ponds". that is the connecting pipes would provide positive drainage downstream. The ponds would detain runoff during rainstorms. allowing silt and sediment to settle out before draining out to the next lower pond. . . . MINUTES SPECIAL COUNCIL MEETING APRIL 3. 1989 Several members of the audience raised questions and concerns. Dave Littlefield. He feels that the easements which were requested from area residents were intimidating. particularly since there may not have been a clear understanding of what is proposed. Roger Fishbach. They get water in their basement now and are concerned that attempts to retain water might aggravate the problem. Mahady responded that the plan will result in the areas which now flood will be drier more often. Tom Story. He feels that the old area drain tile system was disrupted when the sanitary sewer system was installed. He wouldn't mind giving up some easement if the problem were solved. Chuck Farrell. apartment site? Does the study take into account drainage from the new Yes. Barbara Livingston. Why wasn't their house shown on the topography maps? The proposed easement goes through their house. Mahady explained that the available data was prepared prior to construction of their home. Problems such as this will be field checked and the final plan will be modified to correct them. Chuck Farrell. He is unwilling to sign an easement on the basis of a preliminary study. Roger Fishbach. How much disturbance will construction of the storm sewer create? Mr. Ames responded that while the trench itself is relatively narrow. the temporary construction easement is 70 feet wide with a 20 foot permanent easement. The 20 foot permanent easement has to remain relatively clear for future maintenance. The ponds themselves do not require excavation. Debra Farrell. What is the time frame for the final plan? How will it be paid for? It is hoped that a final plan can be completed within the next 3-6 months. During that time the City has to explore various funding methods (e.g. direct assessment. general fund. storm sewer district. etc.). Kristi Stover. Who prepares the final plan? Presumeably the City Engineer. John Miller. He just moved in nine months ago and feels the neighborhood should have been involved earlier. Sandy Van DerVeer. Has the plan been studied for potential affects on area wells? Mahady - no but. if anything. moving the water through the area more quickly should lessen potential impact. Debra Farrell. Can the project go ahead without Tonka Bay? Yes. What do the $2500/acre figures in the study represent? Estimated expenses if the City has to buy easements. She feels the amount should be based upon assessed values of the property. - 2 - . . . MINUTES SPECIAL COUNCIL MEETING APRIL 3. 1989 Bud Osmonson. The total cost of Shorewood's portion of the plan would be approximately $45 - 55.000 if the City doesn't have to buy easements and if Baywood Shoppes excavates Pond No.3. Chuck Farrell. He prefers piping (storm sewer) to Pond No. 3 and enlarging Pond No. 3 to eliminate Pond Nos. 1 and 2. Roger Fishbach. He questions the location of Pond No. 1 and feels it may actually be located further to the east. Kristi Stover. Can the area be more accurately surveyed, Yes - either by ground crew or aerial survey. Mayor Haugen. It sounds like the City should have new aerials prepared. Nielsen intends to suggest this in the 1990 budget. Gagne moved. seconded by Stover to ask the City Engineer to prepare an estimate of surveying costs for the 10 April Council meeting. Motion carried unanimously. Watten moved. seconded by Gagne to have the City Attorney obtain an estimate of cost from an appraiser relative to determining value of proposed easements. Motion carried unanimously. Mayor Haugen informed the Council that there would be an executive session to discuss the Henney lawsuit and pending litigation by Betty Christesen. Gagne moved. seconded by Watten to adjourn the meeting at 10:30 p.m. Motion carried unanimously. Respectfully submitted. Bradley J. Nielsen City Planner/Building Official BJN:ph - 3 -