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Logan Wash Mine Annual Report <br />Permit No.: M-1977-424 <br />Table 2.0 Miscellaneous Access Roads Reclamation Status <br />Area Estimated Acres Reclaimed Acres Remaining <br /> Disturbed Area (March 2004) to be Reclaimed <br />Mine Bench and 7.46 3.0 4.5 <br />Portal <br />Old Surface 1.51 1.51 0.0 <br />Process <br />New Surface 2.17 2.17 0.0 <br />Process <br />Heatedfreater 1.36 0 1.36 <br />Beyond 2.33 2.33 0.0 <br />Microwave <br />Vicinity ofthe 0.75 0.75 0.0 <br />Microwave <br />Total 15.58 9.76 -5.9 <br />In the year 2000, approximately 0.14 acres was disturbed due to repair activities that were <br />conducted on the retort discharge pipeline near the evaporation pond. This area has revegetated <br />naturally, and will be monitored for future reclamation needs. No new ground disturbance was <br />made during construction of the pilot passive treatment system in 2002 as the system was <br />constructed on previously disturbed land below the toe of the lower dump. <br />3.0 Monitoring Activities <br />Monitoring activities at the Logan Wash Mine during the reporting period consisted of mine <br />water discharge monitoring and sampling activities. These activities included (1) flow <br />monitoring and sampling of two National Pollution Discharge Elimination System (NPDES) <br />outfalls on weekly, monthly, and quarterly schedules, (2) measurement of flow rates of the mine- <br />waterdischarge and retort-water discharge on a weekly basis, and (3) monitoring flow and field <br />parameters and sampling and analysis of influent and effluent from the pilot passive-water- <br />treatment system. <br />The former Closure Monitoring Program required by DMG under Technical Revision No. 2, <br />Proposed Closure Plan for Logan Wash Mine Retorts {TR-2) was discontinued in 2002 because <br />GSHI conducted the required 5-quarter sampling events at Well LWCW-lA and the mine water <br />(Outfall 001). The closure program was ultimately abandoned due to leakage from the retorts. <br />For more information on TR-2, see previous annual reports. <br />3.1 NPDES Outfall Sampling <br />Two NPDES outfalls, administered by the Colorado Department of Public Health and <br />Environment (CDPHE), were monitored in accordance with permit-established schedules. <br />Outfalls 001 (Logan Wash Mine, main lower portal discharge) and 002 (Research Mine <br />discharge) are to be monitored weekly for pH, flow rates, total dissolved solids (TDS), and total <br />suspended solids (TSS); monthly for TDS, TSS, pH, nitrate, sulfate, fluoride, ammonia, COD, <br />