Laserfiche WebLink
Table 2-Monthly Piezometer Elevations <br /> Monitoring Well Piezometer Depth Depth to Water Depth of Water <br /> Identification Observation Date R B 11 <br /> P6 06/29/2023 72.46 DRY N/A <br /> P7 06/29/2023 92.50 DRY N/A <br /> P8 06/29/2023 97.51 96.66 0.85 <br /> P9 06/29/2023 72.30 71.94 0.36 <br /> P10 06/29/2023 58.30 57.48 0.82 <br /> I'll 06/29/2023 41.80 41.40 0.40 <br /> P12 06/29/2023 41.71 41.64 0.07 <br /> P13 06/29/2023 41.34 41.02 0.32 <br /> P14 06/29/2023 41.24 DRY N/A <br /> P15 06/29/2023 41.10 40.84 0.26 <br /> The leak detection system at the LTF Collection Pond was inspected June 29, 2023 and 880 gallons were <br /> evacuated from the leak detection system and pumped to the LTF. The LTF underdrain system was visually <br /> inspected June 29,2023 and the flow rate was measured to be approximately 29.0 gallons per minute(gpm). <br /> West Pit Waste Water Treatment Plant <br /> During the month of June 2023, the West Pit Waste Water Treatment Plant (WWTP) was operated <br /> intermittently (3 to 4 days per week) under Colorado Department of Public Health and Environment <br /> (CDPHE) CDPS Permit No. C00045675 for discharge into the Rito Seco alluvial aquifer. During the <br /> month, 8,881,800 gallons (27.3 acre-feet) of treated water was discharged to the Rito Seco and 506,500 <br /> gallons (1.55 acre-feet) of water was transferred from the West Pit to the Lined Tailing Facility (LTF). <br /> Additionally,no water was reinfiltrated into the West Pit in June. <br /> BMRI performed the monthly visual seepage expression inspections on June 29, 2023 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 /> Monitoring Well Identification Observation Date Depth to Water <br /> ft <br /> BF4 06/29/2023 24.85 <br /> BF-5R 06/29/2023 30.81 <br /> BF{ 06/29/2023 30.89 <br /> M-6 06/29/2023 DRY <br /> M-7 06/29/2023 DRY <br /> M-8 06/29/2023 DRY <br /> M-9 06/29/2023 141.23 <br /> M-10 06/29/2023 24.28 <br /> M-11R 06/29/2023 39.19 <br /> M-12 06/29/2023 174.34 <br /> M-13R 06/29/2023 125.68 <br /> M-14 06/29/2023 130.49 <br /> M-16 06/29/2023 21.04 <br /> M-17 06/29/2023 28.62 <br />