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<br />. <br /> <br />. <br /> <br />. <br /> <br />A list of recommendations for avoiding and minimizing impacts to Blanding's turtles and <br />their habitat is included in the DNR report. These recommendations will be implemented <br />were feasible. The measures that will likely be appropriate for project construction <br />include: <br /> <br />1. Placement of silt fencing around construction areas to keep turtles out of <br />construction areas in the spring. <br /> <br />2. Notifying contractors of the possibility of threatened turtles III the area and <br />instructions on how to avoid harm to turtles if they are spotted. <br /> <br />3. Minimization of impacts to wetlands on the site. <br /> <br />4. Preservation ofnn-mowed upland buffer around wetlands on the site. <br /> <br />5. Preservation of some undisturbed upland at the northwest corner of the site. <br /> <br />Item 12: Physical Impacts on Water Resources within the AUAR Study Area <br /> <br />Based on preliminary design information, four of twelve wetland basins will be impacted <br />with the Guidant Campus expansion resulting in a total of 0.6-acre of impact. To comply <br />with requirements of the Minnesota Wetland Conservation Act, wetland impacts will be off <br />set by creating mitigation at a 2: I ration (2 acres of mitigation area for each acre of <br />impacted area). As part of the permit approval process, a final mitigation plan will be <br />snbmitted to the Army Corp of Engineers and the Rice Creek Watershed District, which <br />identifies wetland impacts and detailed mitigation. <br /> <br />Item 16: Erosion and Sedimentation <br /> <br />Erosion and sedimentation will be minimized during redevelopment of the AUAR study <br />area by the implementation of erosion control measures that will be identified in the final <br />site grading and construction plans. The control measures, including those required by the <br />City of Arden Hills, Rice Creek Watershed District and the MPCA NPDES permit, will be <br />implemented prior to the grading operation and will be maintained nntil all disturbed areas <br />have been restored. <br /> <br />Item 17: Water Quality; Surface Water Runoff <br /> <br />The proposed development will decrease the amount of existing impervious surface area <br />within the AUAR study area, thus decreasing the overall surface water runoff volumes. <br />However, unlike existing surface water runoff which discharges directly into adjacent <br />wetlands, surface water runoff generated from the proposed development will be treated <br /> <br />Guidant Campus Master Plan <br />Draft AUAR <br /> <br />- 58- <br /> <br />September 2002 <br />