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Table 2-Monthly Piezometer Elevations <br /> 1onitoring Well Piezometer Depth Depth to Water Depth of Water <br /> Observation Date <br /> :!Identification (ft) (ft)== =(ft)' <br /> P6 02/27/2020 72.46 DRY N/A <br /> P7 02/27/2020 92.50 92.29 0.21 <br /> P8 02/27/2020 97.51 96.68 0.83 <br /> P9 02/27/2020 72.30 71.89 0.41 <br /> P10 02/27/2020 58.30 57.56 0.74 <br /> P11 02/27/2020 41.80 41.39 0.41 <br /> P12 02/27/2020 41.71 41.67 0.04 <br /> P13 02/27/2020 41.34 41.04 0.30 <br /> P14 02/27/2020 41.24 DRY N/A <br /> P15 02/27/2020 41.10 40.86 0.24 <br /> The leak detection system at the LTF Collection Pond was inspected February 27, 2020. A total of 820 <br /> gallons (29.3 GPD) were evacuated from the leak detection system and pumped to the LTF. The LTF <br /> underdrain system was visually inspected February 27, 2020 and the flow rate was measured to be <br /> approximately 32.5 gallons per minute(gpm). <br /> West Pit Waste Water Treatment Plant <br /> During the month of February 2020, the West Pit Waste Water Treatment Plant (WWTP) was operated <br /> under Colorado Department of Public Health and Environment(CDPHE) CDPS Permit No. C00045675 <br /> and discharged 5,471,700 gallons (16.8 acre-feet) of treated water into the Rito Seco alluvial aquifer. <br /> Additionally,329,700 gallons(1.01 acre-feet)of water was transferred from the West Pit to the LTF. There <br /> was no sludge transferred from the WWTP drying pad to the LTF. <br /> BMRI performed the monthly visual seepage expression inspections on February 27, 2020 in the historic <br /> seepage area identified in Figure 2 of the permit. No seepage expressions were observed in the historic <br /> seepage area. <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 /> onitoritig Well Identification Qliseryaion Aare `Deptho Water,. <br /> BF-4 02/27/2020 24.94 <br /> BF-5R 02/27/2020 30.79 <br /> BF-6 02/27/2020 30.94 <br /> M-6 02/27/2020 DRY <br /> M-7 02/27/2020 DRY <br /> M-8 02/27/2020 DRY <br /> M-9 02/27/2020 141.78 <br /> M-10 02/27/2020 25.33 <br /> M-11R 02/27/2020 38.65 <br /> M-12 02/27/2020 174.89 <br /> M-13R 02/27/2020 125.93 <br /> M-14 02/27/2020 131.07 <br /> M-16 02/27/2020 23.34 <br /> M-17 02/27/2020 30.54 <br /> M-18 02/27/2020 26.80 <br /> M-19 02/27/2020 24.15 <br />