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Postmining <br /> Paramete Trapper's Trapper's basis for selection Division's Comment <br /> r Selection pp <br /> Produces the minimum 0.5 inch <br /> i <br /> Design2.75 of runoff necessaryto . <br /> inches n Same event as used in preming model <br /> Event 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 Postmining land use Reasonable as per postmining land use. <br /> g <br /> "Good" hydrologic None Reasonable as per "Good" in SCS TR55 for <br /> condition other lands corresponding to <br /> Hydrologic soil group Permit application,Appendix Q <br /> classification "B" Section XII <br /> CP Factor: 0.014 <br /> SEDCAD 4 table for permanent Cover values and treatment practices indicate <br /> 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 30 August <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 <br /> request for a partial Phase II bond release for the 376.1 acres bond release blocks as per the table <br /> below: <br /> Permit Number C 1981010 <br /> SL19 <br />