1990.11.28 PC Minutes - Laserfiche WebLink

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P.C. Minutes - November 28, 1990 Page 3 Approximately 90% of the lot in question identified as Tract B on the site plan is located in the 100 year flood plain. The regulatory flood protection level is 914 mean sea level and the 100 year flood elevation is 913 mean sea level. Over 50% of the site is at or below the 10 year high water elevation of 912.1 mean sea level. With the exception of the mound septic system and the proposed building pad area, the entire site identified as tract B is identified as a drainage easement. The identified septic system area is located 100' from the proposed well site. The applicants identified the lowest floor elevation of the proposed structure to be 2 ft. above the 100 year flood elevation. The wetland identified on the lot south of the site in question, currently holds standing water. The access to the proposed site by Mort Huber is through a private gravel driveway easement. There are a number of concerns that the city staff has regarding this proposal. 1. The proposed location of the mound septic system on the site plan is different than the area identified in the percolation test. It should be noted that the Washington County Health Department has tentatively approved the mound septic system subject to meeting certain conditions. 2. The lowest floor elevation proposed for any structure has been identified as 915 mean sea level. The city staff has recommended to the developer that the lowest floor elevation be established at 917 mean sea level, which would be 4' above the 100 year flood elevation and consistent with recent planning commission and council policy. 3. No provisions have been made for garages or exterior storage on site and these types of structures would not be permitted in the drainage easements which would be the balance of the site. 4. The site does not comply with section 320-5B (2) of the City zoning ordinance with regard to access to a site by private easement. 5. Sewage from the residence will have to be pumped 100 ft. to the west into the proposed mound system. Of particular concern to the staff, as well as representatives of the RCWD is that the City may be creating a situation similar to that of the homes that flooded near Oneka Lake 5 to 6 years ago. If the planning commission feels that this type of development is consistent with similar development in the area and the permit in question will not be detrimental to the health, safety, welfare, and improvements on the site in question or to the surrounding areas, we would suggest that any recommendation for permit approval be subject to special conditions. Mr. Rod Halverson, Midwest Land Surveyors was present to address any questions regarding drainage and excavating. He stated that the drainage would be directed from the north west area of the property to the south property line and into Bald Eagle Lake. Mr. Mort Huber stated that they would construct a birm along the south property line to avoid any drainage onto the neighboring property to the south. Mr. Huber stated that the stormwater has always flowed in this direction and installing the birm would be an improvement.