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Post-mining <br /> Parameter Trapper's Trapper's basis for selection Division's Comment <br /> Selection pp <br /> 2.75 <br /> Produces the minimum 0.5 inch Design Event inches in of runoff necessary to Same event as used in pre-mining model <br /> 24 hours maintaining program accuracy <br /> (SL19 application Sec 1.4.2). <br /> 61 AMC II Trappers selected cover, soil Reasonable as per selections of cover,soil <br /> CN group, hydrologic conditions and ' <br /> 79 AMC III group, hydrologic conditions and C factor. <br /> CP factor(see below). <br /> Pasture, Grassland & <br /> Ran eland Post-mining land use Reasonable as per post-mining land use. <br /> g <br /> Reasonable as per"Good" in SCS TR55 for <br /> "Good" hydrologic None other lands corresponding to>75%ground <br /> condition cover,which is consistent with Trapper's SL16 <br /> vegetation data. <br /> Hydrologic soil group Permit application,Appendix Q <br /> classification "B" Section XII <br /> SEDCAD 4 table for permanent Cover values and treatment practices indicate <br /> CP Factor: 0.014 pasture&rangeland reasonable selection of this variable <br /> Based on Trapper's SEDCAD 4 modeling using baseline data, the Division finds that the lands <br /> proposed for Phase II bond release are not contributing suspended solids to streamflow or runoff <br /> outside the permit area in excess of pre-mining levels. <br /> Summary and Conclusions <br /> Based upon a review of the mine permit, the applicant's bond release application, the September <br /> 2017 bond release inspection and other prior site inspections, the Division finds that Trapper <br /> Mining, Inc. has replaced topsoil in accordance with the approved reclamation plan. Trapper <br /> Mining,Inc.has established vegetation which supports the approved post-mine land use and meets <br /> the approved success standard for vegetative cover. The Division finds that the reclaimed area <br /> subject to this bond release is not contributing suspended solids to streamflow or runoff outside <br /> the permit area in excess of pre-mining levels. <br /> V. PROPOSED DECISION <br /> Based on the above observations,the Division proposes to approve Trapper Mining,Inc.'s request <br /> for a partial Phase II bond release for the 376.1 acres bond release blocks as per the table below: <br /> Permit Number C 1981010 <br /> SL19 <br />