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Table 2-Monthly Piezometer Elevations <br /> Monitoring Well Piezometer Depth Depth to Water Depth of Water <br /> Identification Observation Date ft 11 11 <br /> P6 02/28/2019 72.46 DRY N/A <br /> P7 02/28/2019 92.50 92.31 0.19 <br /> P8 02/28/2019 97.51 96.67 0.84 <br /> P9 02/28/2019 72.30 71.95 0.35 <br /> P10 02/28/2019 58.30 57.57 0.73 <br /> I'll 02/28/2019 41.80 41.39 0.41 <br /> P12 02/28/2019 41.71 41.68 0.03 <br /> P13 02/28/2019 41.34 41.05 0.29 <br /> P14 02/28/2019 1 41.24 DRY I N/A <br /> P15 02/28/2019 1 41.10 40.86 1 0.24 <br /> The leak detection system at the TSF Collection Pond was inspected February 28, 2019. A total of 860 <br /> gallons (29.7 GPD) were evacuated from the leak detection system and pumped to the LTF. The LTF <br /> underdrain system flow was measured to be approximately 32.8 gallons per minute(gpm). <br /> West Pit Waste Water Treatment Plant <br /> During the month of February 2019, the West Pit Water Treatment Plant was operated under Colorado <br /> Department of Public Health and Environment(CDPHE)CDPS Permit No. C00045675 for discharge into <br /> the Rito Seco alluvial aquifer. During the month of February, 5,982,300 gallons(18.36 acre-feet)of treated <br /> water was discharged to the Rito Seco. There was 376,200 gallons (L15 acre-feet) of water transferred <br /> from the West Pit to the LTF in February 2019. There was no sludge transferred from the water treatment <br /> plant drying pad to the LTF. <br /> BMRl performed the monthly visual seepage expression inspections on February 27, 2019 in the historic <br /> seepage area identified in Figure 2 of the permit. No seepage expressions were observed in the historic <br /> seepage area during February 2019. <br /> BMRI measured the monthly West Pit backfill, alluvial and monitoring wells as required under in the <br /> QA/QC Plan. Measurements obtained for the monthly wells are shown in Table 3. <br /> Table 3-Monthly and Quarterly Groundwater Depth to Water <br /> Monitoring Well Identification Observation Date Depth to Water <br /> ft <br /> BF-4 02/28/2019 24.95 <br /> BF-511 02/28/2019 30.83 <br /> BF-6 02/28/2019 30.95 <br /> M-6 02/28/2019 DRY <br /> M-7 02/28/2019 DRY <br /> M-8 02/28/2019 DRY <br /> M-9 02/28/2019 141.76 <br /> M-10 02/28/2019 25.49 <br /> M-11R 02/28/2019 38.98 <br /> M-12 02/28/2019 175.08 <br /> M-13R 02/28/2019 126.07 <br />