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City of Falcon. Heights <br />Falcon Heights, Mn. <br />Re: File No. 4451 <br />May 4, 7982 <br />• <br />The proposed plan incorporates a system of swales, open channels and culverts <br />to convey the storm water from the site to the storm water pond. We recommend <br />that .this system be replaced with an urban type storm drainage system that <br />would include catch basins and underground pipe. This urban type system would <br />eliminate the maintenance problems associated with swales and culverts. Under <br />this system catch .basins would be installed in each of the four easterly cul- <br />de-sacs and would be connected to the storm water pond by storm sewer. <br />In summary, based on our review of the proposed plans, we recommend that the <br />plan be approved with the following provisions: <br />1) That seven (7) acre-feet of storm water storage be provided in two ponds. <br />located near the south end of the development on dither side of Prior Ave- <br />nue and that each pond have a seepage structure with a capacity of 1 cfs. <br />2) That an urban type storm sewer system with catch basins and underground <br />storm sewer be installed in the development. <br />If we~can be of any further assistance in this matter, please contact us. <br />Yours very truly, • <br />BONESTR00, ROSENE, ANDERLIK & ASSOCIATES, INC. <br />Robert G. S unicht P.E. <br />RGS:li <br />Page 2. <br />9484a <br />