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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) (ft) (ft) <br /> P6 04/06/2020 72.46 DRY N/A <br /> P7 04/06/2020 92.50 92.30 0.20 <br /> P8 04/06/2020 97.51 96.69 0.82 <br /> P9 04/06/2020 72.30 71.89 0.41 <br /> P10 04/06/2020 58.30 57.55 0.75 <br /> P11 04/06/2020 41.80 41.39 0.41 <br /> P12 04/06/2020 41.71 41.68 0.03 <br /> P13 04/06/2020 41.34 41.04 0.30 <br /> P14 04/06/2020 41.24 DRY N/A <br /> P15 04/06/2020 41.10 40.86 0.24 <br /> The leak detection system at the LTF Collection Pond was inspected April 6, 2020 and 880 gallons were <br /> evacuated from the leak detection system and pumped to the LTF. The LTF underdrain system was visually <br /> inspected April 2,2020 and the flow rate was measured to be approximately 33.0 gallons per minute(gpm). <br /> West Pit Waste Water Treatment Plant <br /> During the month of March 2020,the West Pit Waste Water Treatment Plant(WWTP)was operated under <br /> Colorado Department of Public Health and Environment (CDPHE) CDPS Permit No. C00045675 and <br /> discharged 7,796,800 gallons (23.9 acre-feet) of treated water into the Rito Seco alluvial aquifer. <br /> Additionally,401,000 gallons(1.23 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 April 6,2020 in the historic seepage <br /> area identified in Figure 2 of the permit. No seepage expressions were observed in the historic seepage <br /> 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 /> Monitoring Well Identification Observation Date Depth to Water <br /> (ft) <br /> BF-4 04/06/2020 24.92 <br /> BF-5R 04/06/2020 30.80 <br /> BF-6 04/06/2020 30.93 <br /> M-6 04/06/2020 DRY <br /> M-7 04/06/2020 DRY <br /> M-8 04/06/2020 DRY <br /> M-9 04/06/2020 141.51 <br /> M-10 04/06/2020 25.22 <br /> M-11R 04/06/2020 38.36 <br /> M-12 04/06/2020 174.76 <br /> M-13R 04/06/2020 125.85 <br /> M-14 04/06/2020 130.95 <br /> M-16 04/06/2020 23.20 <br /> M-17 04/06/2020 30.53 <br /> M-18 04/06/2020 26.69 <br />