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To:13038328106 Page:4 of 7 2020-12-01 23:56:54 GMT 13032008630 From:Ben Langenfeld <br /> Peak Ranch Resource December 1.2020 <br /> Sul Fates,salts,or other analytes of concern are elevated where mining is occurring. It should be noted that the i4laryland <br /> Creek Ranch excavation,along with similar sand and gravel excavations near Silverthorne in the Same;geology as Peal. <br /> Ranch Resource have not generated water quality concerns or issues. <br /> Riparian Area& Wetlands <br /> The western houndary gftheprgject area borders the Blue Rivet-,and theproposedminingplan includes a 200;foot buffer <br /> between the mining extent and the river. A majority gy'lhe wildly%use of this propertilly occurs along the river corridor. CPW <br /> recommends increasing the buffer•to a minimum g1'300 feet to protect this riparian.:one front disturbance. Scientific <br /> literature supports a minimtunt buffer gf300 feet,from the river,which is consistent with( PW's recotninendations for other <br /> land use disturbances as well as several Federal resource tnanagetnera plans in Colorado(Appendix A). <br /> Restlonse <br /> Peak Materials has developed a revised mining pit configuration that will keep mining at least O feet ftorn the Blue River. <br /> This new configuration fits within thy'alrcad.y proposed affected area boundary and setbacks for inning activity.This new <br /> configuration is shower)conceptually on Figure 1 and now includes two lakes.The mining*and reclamation plans proposed fbr <br /> Peak Ranch Resource will be revised to incorporate the 300 foot Setback. <br /> Leak Ranch ROW, <br /> 3tr log e rat CO; figurdt+®rr nth.�0�#04[ @r from Blue.EiS e feet frurn Esl�e F i:ri <br /> and hl•e huff <br /> I rroundvaater`Lake-I-'roposed <br /> `w 'Min,nO Area. Pr pn;PH <br /> =y; "u Perrnft Boundary, <br /> i <br /> i 9 ' <br /> �� � �k� � w � q iT • <br /> skid <br /> l <br /> F, <br /> u <br /> d <br /> Figure I Conceptual Mining Plans with 300 foot Blue River Buffer <br /> A 16-acre delineated wetkind aTists at the northeast corner of the property along Highmn,9. This area is a wet meadow <br /> dorninated by grasses and sedges. Wetlands provide many.functions includingflood control.,groundwater recharge and <br /> Response to CPW Cnnments on Peak Ranch Resource 3 of'fi <br />