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Groundwater Quality Monitoring Plan <br /> 2.3 Water Quality Monitoring Wells <br /> Four groundwater monitoring wells are used for water quality sampling. The <br /> groundwater monitoring wells, MW-02n, MW-03n, and MW-04n are installed as <br /> downgradient water quality sampling points. The downgradient water monitoring well <br /> MW 1 n is both a water quality well and a point of compliance (POC)well. <br /> Table 2: Existing Water Quality Well Locations and Elevations <br /> M ~ ORVELL MW701o,. MW-02n R MW-03ii .yb MW704n <br /> E `"' WQMIPOC) �WQML;vii, (WQM <br /> NORTHING, FT 1289834.266 1289818.983 1288524.49 1286086.145 <br /> EASTING, FT 3190113.783 3187409.454 3184778.435 3185152.696 <br /> ELEVATION (TOG), FT 4861.275 4860.73 4884.104 4869.923 <br /> Original Coord System <br /> CASING HEIGHT, FT 3.42 2.83 3.25 3.58 <br /> 3.0 Groundwater Monitoring <br /> Water level gauging, measurements to the water level across the mining area, have <br /> been done since mining began. The water level measurements will continue to be made <br /> during the mining activities at the mine site and into the future as required by the mining <br /> permit. <br /> Water quality monitoring begins at the new portions of the mine site are added to the <br /> mining permit through the amendment process. The water quality monitoring is a DRMS <br /> requirement that will be completed. <br /> 3.1 Water Level Monitoring <br /> Water level measurements have been made throughout the mining operations. Water <br /> level measurements are made in monitoring wells at least once every three months <br /> (quarterly), and usually monthly. Water level measurements collected in concert with <br /> water quality sampling can serve as quarterly water level measurements for the <br /> purposes of this monitoring evaluation plan. <br /> Existing groundwater wells, listed in Table 1, have been used for gauging water levels <br /> and have been measured over time. Water level measurements are made with a water <br /> level indicator. The water level indicator signals at the top of water in the well and is <br /> measured with the tape at the top of the PVC well casing. The measured water level is <br /> subtracted from the surveyed well elevation to determine the groundwater elevation. <br /> �j,MOI EN LG Everist Fort Lupton GW Monitoring Plan <br /> Page 4 of 7 <br /> 29 <br />