01/12/1981 Council Minutes - Laserfiche WebLink

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)29 January 12, 1981 Mayor Gourley asked Mr. Short if he could define what constitutes the degrees of den- sity and Mr. Short said generally and R -1 district with on -site systems with 2 on 5 acres of land is considered low density; R -1 on small lots, with 2/4 homes per acre is considered moderate; quads or townhouses, with 4/12 per acre, are considered mod- erate to medium; and apartments or condos- with 12/15 per acre, is considered high density. Mr. Jaworski asked if the proposed plat conforms to Ord. #56 and Mr. Short said most of the requirements are met with the exception of the side yart setbacks - he would need to thoroughly review the plat, which he has not done to date. A recess was called at this point in the meeting. The meeting reconvened with Mr. Ken Meister speaking on the utilities in the area. The sewer system was designed to flow to the existing lift station. This lift station was designed to serve the entire area completely developed. Mr. Meister said there is more than enough capacity in the lift station for the complete area. The water system consists of the one well and pump house which was also designed to ser- vice the entire area, completely developed. Mr. Meister noted that this well is only capable of pumping 500 gallons per minute - this is more than adequate to serve the daily requirements of the area. However, when designing a system for fire flow, it should be 1000 gallons per minute. The drainage of the area will be controlled by the Rice Creek Watershed Board. The soils are silty sand with a high water table. Streets have been constructed on this III type of soils. Coarse materials will have to be brought in to control, the frost heave. Mr. McLean asked what impact this development would have on the water supply and Mr. Meister said there is more than enough water for daily consumption. In case of a fire, all areas would be basically out of water. The fire flow requirements are 1000 gallons per minute and this pump will only produce 500 gallons per minute. Mr. McLean noted that this problem exists at the present time and the same situation would exist even if the development is not completed. Mr. Reinert asked if the well was sized to serve the entire area - what capacity is the well? How many residents will it serve? Mr. Meister said that when the entire area is developed, the maximum daily peak requirements would be 230 gallons per minute - this well will serve the entire area. There was discussion on the water study that had been ordered by the Council. Mayor Gourley explained this was for a larger area than Country Lakes and was basically for the purpose of providing the necessary fire flow and to provide a back system to the existing system. There was discussion of the elevations in the area to include the construction of the ponding areas. Mr. Meister explained the manner of construction and the fact that there would not be standing water in the ponds. These ponding areas will drain through a storm system into the Lake. These ponding areas will be so constructed as to filter the water before it is drained into the lake. These areas are under the jurisdiction of the Rice Creek Watershed Board. At this point in the meeting the Clerk was asked to read the motion from the Planning III and Zoning which denied the special use permit.