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m Bonestroc <br />Rosene <br />Andeflik& <br />Assocfates <br />Engineers A Architects <br />i ebruarv 5. 1993 <br />or- O n <br />JMipr C A'xl^^ ^ <br />^ ki' ^e <br />f ^ <br />• Cm n <br />f Su^ <br />G ^ <br />•#fh A <br />S^r*cwQ Af <br />Af <br />•• <br />A •t-W *t <br />OM O .mau »f <br />iMA C •u»«% A A <br />A lDu<«Dr Af <br />Hlp« A Af <br />A <br />t <br />c »f <br />I An^ Af <br />Af <br />A A <br />SA^^AT a ^ Pf <br />Vrws M Iaaq a c ^ <br />« ^-e*vr Af <br />C - Af <br />«rs»s f VAmh A Af <br />0 Af <br />AT^’A#* A ArxV'AO^ Af <br />U at « ff AnA\ M <br />AA«»a a Af <br />C^AT> A Af <br />i tiff Age At <br />Aeirhenw^ Af <br />O Af <br />AA«S i Af <br />. Ais^Orm • Af <br />A^ . Af <br />? A - AT-'AI Af <br />• >yju Af <br />at ^ f Af <br />kVMAA O Gw«^Aon Af <br />CACAA 0M» Af <br />A f A^pr <br />LAO M ^&rnwmt <br />M^rsjr M OiAPr <br />A f>jpA>jirA <br />Ms. Jeanne A. Mabusth <br />Building and Zoning Administrator <br />Cit> of Orono <br />P.O Box 66 <br />Crystal Bav, MN 55^:3 <br />Re; Albert and Sallv Hanser <br />File No 139-1799 <br />Dear Jeanne: <br />We have reviewed the site survey for the proposed pond on Lot 2. Block 1. Hanser Addition <br />located south of Fox Street in the Southeast Quarter of Section 3. The pond is pr-»pmed to <br />satisfy the requirements of the Minnehaha Creek Watershed District ITie requirements <br />specifically ask to provide one foot of sediment storage capacitv which will be Mtisfieil The <br />pond is proposed to be constructed in an existing low area surrounded by wtxxls This low area <br />IS not identified as a \v®tland on either the DNP protected Waters and Wetland Map or the <br />National Wetlands inventorv Map The low area is at an elevation ot 933.3 which is 1.0 feet <br />above the OHWT of the adjacent DNR protected Pi owns Bay W etland (27 855W). <br />As this area is not a wetland, it would be an ideal location for the coinpensati^ry mitigation <br />needed to do the City improvements on Fox Street. The mitigation aiea must be 21,000 square <br />feet excavated down to the wetbnd OHW’L of 932.3. The ex’sting 933.3 contour is 22,700 <br />square feet in area, and is several feet inside of the drainage easement on all sides. <br />W^e recommend the proposed pond be approved by the City provided that the plan be modified <br />to provide additional excavation out to the orain.ige easement limits. Tliis additional excavation <br />is fipproximaiely 1.0 feet deep over a 14,(XX) square feet area. The excavated m.itcrials must <br />be placed around the hou.se and fenced off with silt fence for erosion control. If there is excess <br />excavated materials available, the City may want to utilize them to construct the embankments <br />along Fox Street Coordinating the timing and logistics of this exch.mge should be distussed <br />with the property owner. <br />The wetland mitigation area shi'uld be restored by spreading saKaged topsoiForganic materials <br />and seeding with native grasses. Ihe outlet culvert should be protected with silt fencing. <br />Page I. <br />139A.cor <br />2335 West Highway 36 • St. Paul, Minnesota 55113 • 612-636-A600