Laserfiche WebLink
Table 12.3 Summary of Proposed Wetland Mitigation <br />Wetland Wetland Replacement by Location (Drainage Area) Totals <br />Type 6 7 8 10 18 19 24 26a 26b (acres) <br />Created <br />Type 1 1.35 1.30 1.80 1.90 6.351 <br />Type 2 0.45 0.45 <br />Type 3 0.45 0.45 <br />Type 4 <br />Subtotal 1.35 1.30 2.70 1.90 7.25 1 <br />r <br />PVC* 2.30 3.50 3.40 9.20 <br />(Stormwater) <br />PVC* 0.81 1.35 1.30 1.90 5.36 <br />(Buffers) <br />PVC* 0.77 5.59 6.36 <br />(Restoration) <br />Subtotal 1.58 2.30 1.35 5.59 3.50 1.30 3.40 1.90 20.92 <br />Grand Total 28.17 <br />*PVC -Public Value Credits <br />Drainage Area 6 includes three existing wetlands (Wetland B, C and E). Wetland B is a <br />created wetland that includes a narrow buffer within a conservation easement. The <br />existing drainageway will be left intact, while 0.81 acres of the cropped wetland will be <br />restored to a Type 1, wet prairie wetland. A 0.77-acre riparian buffer will be <br />incorporated along the wetland transition zone in this area. <br />Drainage Area 7 will include a 2.30-acre stormwater detention pond. This pond will <br />include a shallow bench that will support a fringe of emergent vegetation. Since this <br />pond will provide pretreatment of stormwater that will benefit the wetland immediately <br />downstream of it (within Drainage Area 8), it is proposed for public value wetland <br />credits. <br />Drainage Area 8 includes 1.35 acres of wetland and 1.35 acres of PVC buffer with a <br />meandering channel flowing though it. Portions of the basin will be designed to establish <br />Type 1, wet meadow/wet prairie wetland hydrology. The basin will be established with <br />respect to groundwater levels and a low weir will be installed in front of the outlet such <br />that infiltration will be maintained, but water will be retained at a frequency to facilitate <br />saturation of soils. Finer soils could be mixed in to promote Type 1 vegetation. <br />Within Drainage Area 10, and along the north boundary of the RTC site, is a 3.79 acre <br />wetland, where 2.23 acres of this wetland is within the RTC site and is denoted as <br />"Wetland D". This wetland is a low quality reed canary grass monotype with a few small <br />areas of mixed emergent marsh vegetation. The PVC credits estimated for drainage area <br />12-7 <br />