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Minutes of the Arden Hills Regular Council Meeting, June 13, 1988 Page 6 CASE #88-09 (Cont'd) Bergly stated the Planning Commission intent was that the engineers for the project have proposed a basement elevation below the 100 year flood elevation for basements that are entirely surrounded by earth. Betgly noted the Ordinance in the Floodplain District requires that basements be one foot above the 100 year flood level; it wss his opinion it would be reasonable to request the applicsnt to meet that requirement, ~ The project engineer advised that the 902.8 ft. elevation was the 100 year flood elevation developed before discussions relative to compensating storage. He stated that he and Peters agreed upon an elevation 902.4 ft. with compensating storage and the developer is proposing to build walk-out basement elevations at 904 ft. and the lowest internal basement would be at 902.4 ft. The project engineer reviewed the feasibility study he had done relative to development of this area. He reviewed the soil boring tests, the Rice Creek Watershed District requirements for phosphorous removal, and the flooding possibility. He stated the feasibility study provided sufficient information to propose the development of the land. He also explained the compensating storage proposal which would insure the flooding that occurs in the area would not be worsened by the development. Paul Wallace, 1779 West County Road F, expressed his opposition to the proposed plat based on poor soil conditions, current flooding problems and safety of children in the area. He questioned if the City or the developer would be fencing the ponding area to insure the safety of the children in the area. Wallace also requested that it be noted for the record that he had spoken in opposition to this matter at the Planning Commission meeting. . Council advised there would be no fencing required and noted there is currently a pond in the area and it is not fenced. Councilmember Winiecki questioned if Wallace has trouble with flooding or water in his basement and the elevation of his basement. She explained that ponding is considered an amenity and none of the ponding areas in the city are fenced. Wallace reported that he had problems in the past with water in the basement and that his basement elevation is 903 ft. He also explained that the street floods during 'heavy rainstorms. Winiecki questioned if the method used for filling would be classified as "surcharging". The City Engineer explained this would not be considered surcharging; he noted the filling method proposed by the applicant would be better than the surcharging process. Dan Blackey, 4050 Fairview Avenue, showed slides of the water problems that currently exist in this area and expressed the concern that the drainage problem would be worsened with the proposed development. Blackey stated it was his ~ opinion filling 24% of the area is not "minimal filling" as mentioned in the Comprehensive Plan. Jim Smith, 4109 Valentine Crest Road, stated the flooding occurs mostly on his property. He cOmmented that when the flooding occurred and the City wae notified it took eix weeks to unplug the drain pipe. Smith stated if the City determines the land should be developed, when drainage problems currently exist in the area. the City should accept its responsibility and install storm sewers to correct the problem. Attorney Lynden commented that the City would take measures to insure the developer would not change or worsen the drainage in the area. Councilmember Hansen asked the Engineer if the culvert was increased ih size or the slope changed would the drainage be affected the area, if there are any future plans to install storm sewers in the area and when is it normally accomplished. the City's liability if the problem becomes worse, if the Council can request the costs of the culvert replacement or storm sewer installation be borne by the applicant, and why the City staff took six weeks to unplug the drainage pipe in the area. Peters stated that increasing the culvert or the slop of the pond would impact the area because the water would be run out faster and storm sewers are usually installed in conjunction with street reconstruction. Peters noted the street is partially a county road and this area is not identified in the pavement management plan for street reconstruction. .