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1994-07-05 Drainage Review 07/05/94 10:40 S\0nDTI <i<8UUU rieke carroll muller associates, inc. engineers arcl1itects land surveyors equal opportunity employer '5'612 935 8814 RC~1 ASSOCIATES 141 002/002 July 5, 1994 Mr. Dale Powers City Administrator City of Albertville City Hall P.O. Box 131 Albe~lle, ~ 55301 Re: Psyks 6th Addition Dear Mr. Powers: Our review of information that you received from Meyer-Rohlin by letter dated July 28, 1994 indicates before and after acreage of the drainage areas draining onto the Marx property from the Psyk property of26.37 acres and 7.9 acres respectively. The Meyer-Rohlin letter of May 27, 1994 to me indicated about 30 acres and 7.9 acres for the same areas. A June 9, 1994 letter from Meyer-Rohlin to me included a map that showed these same areas that I used to check the acreage. My calculation yields 32.7 acres and 10.8 acres for these areas. The up shot of all this is that I would recommend a 3 foot deep detention pond on the Psyk lot for use in the temporary solution mentioned in the July 28, letter to you. would about 0.6 acre feet of storage in the temporary parcel. I agree with the Meyer-Rohlin statement that the temporary pond and reduced runoff area should provide a reasonable temporary solution, when coupled with a financial arrangement that would provide a basis for sharing future stonn sewer costs. Also, I recommend that the City work with Mr. Marx to obtain the use of the existing low land for a detention pond. This will be needed to allow development of the Marx property in the future, similar to the plan shown in the December 1988 "West Albertville Drainage Study". The pond size may be reduced if the area west of County Highway 19 is directed to county ditch No.9. Please contact me with any questions on this matter. I will be available at the July 5, 1994 council meeting to discuss this issue. S. ineerely, ~_ ~ ~~ Robert C. Robertson, P.E. RIEKE CARROLL MULLER ASSOCIATES, INC. RCR/ka c: Mike Couri Thor Meyer 10901 red circle drive box 130 minnetonka, minnesota 55343 612-935-6901 fax 612-935-8814 - .....