Laserfiche WebLink
Water Quality Monitoring Plan Climax Molybdenum Company <br /> Version:R4 Permit No. M-1977-493 <br /> 2.3 Monitoring Network <br /> In accordance with the 2011 Water Quality Monitoring Plan submitted as TR-18, Climax has been <br /> monitoring groundwater quality at multiple locations in the Arkansas River Watershed, the Eagle River <br /> Watershed, and the Tenmile Creek Watershed. Table 2-1 presents construction information for all <br /> groundwater monitoring wells at the Site, including date of construction, depth of well, and screened <br /> interval. These monitoring wells have generally been sampled quarterly, weather and site conditions <br /> permitting, since the submittal of the 2011 WQMP or date of construction, and analytical data are presented <br /> in the Annual Reports Climax submits to DRMS. In accordance with TR-18, groundwater samples have <br /> been analyzed for the constituents specified in Table 4-1. <br /> As described in TR-18, Climax also has been monitoring surface water at several internal monitoring <br /> locations and in the East Fork Arkansas River and East Fork Eagle River for the parameters in Table 4-3 <br /> and Table 4-4. Climax collects and treats excess process water and mine drainage within each of the three <br /> drainage basins and discharges treated water to Tenmile Creek under Colorado Discharge Permit System <br /> (CDPS) discharge permit No. C00000248. Surface water monitoring at the outfalls is performed in <br /> accordance with this permit, and is not included in this WQMP. Compliance with the CDPS discharge <br /> requirements demonstrates the overall effectiveness of the collection and treatment facilities. <br /> Table 2.1-Monitoring Well Construction Summary <br /> Monitoring Well Construction Details <br /> Well Date of Latidude Longitude Top of Casing Ground Surface Well Depth Screened Casing <br /> Construction Elevation(ft.) Elevation(ft.) fL BGS Interval(BGS) Diameter(in.) <br /> Arkansas River Watershed <br /> ARK-MW-002S 8/25/2012 39.36115 -106.18155 11,018 11,015 30.0 14.2-24.6 4 <br /> ARK-MW-002D 8/26/2012 39.36114 -106.18152 11,018 11,015 197.1 76.9-186.9 4 <br /> Arwell 9/30/1993 39.36154 -106.19566 10,908 10,905 39.0 10.0-38.5 2 <br /> ARK-MW-001D 9/8/2012 39.36163 -106.19566 -- -- 149.9 59.5-149.9 4 <br /> Eagle River Watershed <br /> EVMW P9/25/2011 <br /> 29/1993 39.36154 -106.19566 10,779 11.5 4.0-11.0 2 <br /> EVMW-1S /3/2011 39.39884 -106.22173 10,786 10,784 24.5 8.9-24.2 2 <br /> EVMW-1D 30/2011 39.39882 -106.22175 10,786 10,785 149.0 103.2-143.2 2 <br /> EVMW-2 0/2011 39.40495 -106.21424 11,104 11,102 200.0 43.2-188.2 2 <br /> EVMW-3S 39.40107 -106,23757 10,379 10,378 24.0 8.5-23.8 2 <br /> EVMW-3D 27/2011 39.40110 -106.23756 10,380 10,379 151.2 41.0-146.0 2 <br /> EV-MW-004 9/12/2012 39.40147 -106.22339 10,796 10,794 209.9 160.0-209.9 4 <br /> Tenmile Creek Watershed <br /> GW#1 6/26/1987 39.44552 -106.15947 10,367 10,364 97.0 20.0-50.0 4 <br /> TM-MW-001D 9/22/2012 39.44548 -106.15953 10,368 10,365 201.5 121.1-201.5 4 <br /> GW#2 6/30/1987 39.45285 -106.15024 10,271 10,269 68.0 20.0-60.0 4 <br /> TM-MW-002D 9/27/2012 39.45281 -106.15028 10,270 10,269 153.6 93.4-153.6 4 <br /> Notes: <br /> Wells in bold font are Point of Compliance(POC)wells <br /> BGS=Below Ground Surface <br /> BTOC=Below top of casing <br /> Horizontal Datum: WGS 1984 <br /> Vertical Datum: NAVD88 <br /> EPP—Appendix C March 2018 3 <br />