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�'' <br /> ,, <br /> , , , <br /> Ms. Barbaza Walther <br /> Mr. James Wisker <br /> Mr. John Smyth <br /> December 17,2008 <br /> Page 7 <br /> Mitigation Basin A . <br /> Mitigation Basin A will be created adjacent to Wetland 2 by converting upland into wetland <br /> by removing approximately one foot of material. Wetland 2, which is also utilized as a� <br /> stormwater pond has a Normal Water Level of 961.0 feet. Ba.sed on this information,the <br /> . applicant is proposing to grade Mitigation Basin A to an elevation of 961.4 and leave the <br /> bottom rough graded to create an undulating bottom of+/- 0.5 feet. The proposed elevations <br /> of Mitigation Basin A will establish a saiurated soil condition with seasonal ponding. <br /> Because of an outlet control struciure on Wetland 2,water ponding within Mitigation Basin <br /> A should be for a relative short period. <br /> Approximately 0.31 acres(13,417 SF) of a Type 2 wetland will be established with the � <br /> creation of Mitigation Basin A. The applicant will employ Prairie Restorations Inc. to seed <br /> the newly created wetland with a BWSR W3 (Native Wet Prairie)seed mix at a rate of 10.0 <br /> � PLS lbs/acre. <br /> Upland Buffer <br /> The applicant will establish a wetland buffer a,long the east side of Mitigation Basin A.The <br /> upland buffer will be seeded with a BWSR US (Native SE MN Mesic Tall-grass Prairie) see�. <br /> mix at a rate of 15.0 PLS lbs/acre. <br /> Mitigation Basin B . <br /> Mitigation Basin B will be created adjacent to Wetlarid 3 by converting upland into wetland <br /> by removing approximately one to two feet of material from the upland area. Based on an � <br /> MFR.A survey of the existing drainage ditch,the water level within the ditch ranges between <br /> 951 in the southern end to 952.5 in the northern end. Based on this information,the applicant <br /> is proposing to grade Mitigation Basin B to an elevation of 951.5 within the southern end of <br /> the basin and 953.0 at the northern end. The bottom of the mitigation basin will be left rough <br /> graded to create an undulating bottom of+/-0.5 feet. The proposed elevations of Mitigation <br /> Basin B will establish a saturated soil condition with seasonal ponding. Because of an outlet <br /> coritrol structure on Wetland 3,water ponding within Mitigation Basin B should be for a <br /> relative short period. <br /> Approximately 0.44 acres (18,994 SF) of a Type 2 wetland will be established with the <br /> creation of Mitigation Basin B. The applicant will employ Pra.irie Restorations Inc. to seed <br /> the newly created wetland with a BWSR W3 (Native Wet Prairie)seed mix at a rate of 10.0 <br /> PLS lbs/acre. <br />