Laserfiche WebLink
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 01/30/2020 72.46 DRY N/A <br /> P7 01/30/2020 92.50 92.29 0.21 <br /> P8 01/30/2020 97.51 96.69 0.82 <br /> P9 01/30/2020 72.30 71.90 0.40 <br /> P10 01/30/2020 58.30 57.55 0.75 <br /> P11 01/30/2020 41.80 41.40 0.40 <br /> P12 01/30/2020 41.71 41.66 0.05 <br /> P13 01/30/2020 41.34 41.05 0.29 <br /> P14 01/30/2020 41.24 DRY N/A <br /> P15 01/30/2020 41.10 40.87 1 O.2::3 :::::d <br /> The leak detection system at the LTF Collection Pond was inspected January 30, 2020. A total of 840 <br /> gallons (28.0 GPD) were evacuated from the leak detection system and pumped to the LTF. The LTF <br /> underdrain system was visually inspected January 30, 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 January 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 7,265,300 gallons (22.3 acre-feet) of treated water into the Rito Seco alluvial aquifer. <br /> Additionally,406,800 gallons(1.25 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 January 30, 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 /> Monitoring Well Identification Observation Date Depth to Water <br /> ft <br /> BF-4 01/30/2020 24.95 <br /> BF-5R 01/30/2020 30.84 <br /> BF-6 01/30/2020 30.98 <br /> M-6 01/30/2020 DRY <br /> M-7 01/30/2020 DRY <br /> M-8 01/30/2020 DRY <br /> M-9 01/30/2020 141.33 <br /> M-10 01/30/2020 25.30 <br /> M-11R 01/30/2020 38.54 <br /> M-12 01/30/2020 174.78 <br /> M-13R 01/30/2020 125.78 <br /> M-14 01/30/2020 130.88 <br /> M-16 01/30/2020 23.30 <br /> M-17 01/30/2020 30.52 <br /> M-18 01/30/2020 26.84 <br /> M-19 1 01/30/2020 1 24.19 <br />