Laserfiche WebLink
JD -6 Mine Environmental Protection Plan 2 <br />1.3 Site History <br />In 1977, Cotter was granted permit number M- 1977 -310 for the JD -6 Mine to extract up to 70,000 tons <br />annually of minerals and waste rock, over a total disturbed surface acreage of 2.48 acres. The JD -6 Mine <br />shares a common portal, known as the Duggan Adit, with the Mineral Joe Mine which is permitted <br />separately under permit number M- 1977 -284. <br />1.4 Current and Future Activities <br />Development activities at the JD -6 Mine have included development drilling, radiometric scanning, and <br />ground support. <br />When ore production resumes, ore will be brought to the surface via a 2,500 ft Duggan Adit, then <br />transported to the temporary ore storage pad at the Mineral Joe Mine. All ore -grade material will be <br />trucked offsite for processing and no tailings or metallurgical processing wastes will be generated or stored <br />on the JD -6 Mine site. <br />To date, the JD -6 Mine has not encountered sufficient groundwater to require water treatment or disposal. <br />If sufficient groundwater is encountered in the underground mine during future operations to require <br />discharge, it will be treated and discharged per the requirements of a Colorado Discharge Permit. <br />Groundwater occurrence and quality are discussed in Section 9 of this EPP. <br />The current affected area includes the waste rock pile, two vent holes, two diversion structures, and a <br />stormwater retention pond (Map 1). Currently, 3.24 acres are included in the current affected area at the <br />JD -6 Mine, which represents an increase of 0.15 acres (Table 1). <br />Table 1. Current Affected Area at the JD -6 Mine <br />AREA <br />Facilities & waste rock pile <br />Vent hole #1 <br />Vent hole #2 <br />Middle Diversion Structure <br />Upper Diversion Structure <br />Retention pond <br />Total Affected Area <br />PREVIOUS <br />AFFECTED <br />ACREAGE <br />1.53 <br />0.70 <br />0.86 <br />0 <br />0 <br />0 <br />3.09 <br />REVISED <br />AFFECTED <br />ACREAGE <br />1.53 <br />0.56 <br />0.48 <br />0.18 <br />0.28 <br />0.21 <br />3.24 <br />After mining is complete, the JD -6 Mine site will be reclaimed per the mine reclamation plan which is <br />provided as Exhibit D to the attached Amendment. The vent holes will be sealed and the waste rock pile <br />will be regraded to a 3:1 slope, capped with available topsoil, and revegetated. <br />4148A.120927 Whetstone Associates • <br />