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vicinity of the tailings disposal area have been consistently <br /> found to be dry except monitoring well M-9 which has indicated a <br /> consistent water level at approximately 144 feet below the <br /> surface. BMR conducts additional monitoring at other wells <br /> outside of the permit boundary as required by the water right <br /> decree (Dos Hermanos and San Luis wells) . Copies of all data <br /> obtained since commencement of tailings deposition have been <br /> submitted previously as part of BMR's quarterly report, and <br /> additional copies are attached. To date, monitoring of wells has <br /> not identified any changes in water quality which would indicate <br /> a release or potential release from the facility. <br /> In response to the current circumstances, BMR conducted <br /> monitoring of all wells in the vicinity of the tailings facility. <br /> Only one well (M-9) located downgradient from the tailings <br /> facility has water standing. As noted above, the depth to water <br /> in M-9 is approximately 144 feet. A sample from M-9 was gathered <br /> on April 3 under the supervision of Bruce Lytle, a hydrologist <br /> with Halepaska Associates. The results are enclosed and, <br /> consistent with previous findings, confirm that no release has <br /> occurred from the tailings facility. MLRD representatives were <br /> present and collected a sample for cyanide analysis using another <br /> lab. BMR has not been apprised of those analytical results. <br /> Monitoring wells M-6, 7 and 8 are also located below the tailings <br /> facility adjacent to M-9 but have been consistently dry and, <br /> therefore, no samples were obtained. <br /> Surface Water Monitoring <br /> Sampling sites are established on Rito Seco Creek above and <br /> below the project area and quarterly samples are collected. <br /> Sample results collected to date do not indicate any release of <br /> cyanide process solution. The analytical results reflect trace <br /> cyanide readings at R2-1 (River Station) above the project area, _ Q <br /> and well locations M-1 and D87-24 which are located next to the <br /> West Pit mine area. RS-19 was a duplicate of RS-1. Given their '��S <br /> location � �- <br /> upgradient of any cyanide use at the facility, BMR <br /> believes these values do not reflect cyanide detection but rather 2 <br /> are the result of either a sampling and/or analytical error. <br /> Surface water monitoring results are also attached. <br /> Air Quality Monitoring <br /> The Department of Health Air Pollution Control Division <br /> required San Luis to install air quality monitoring sites to <br /> monitor particulate emissions. Therefore, the monitoring results <br /> from these stations do not generate data related to cyanide. BMR <br /> is currently in compliance with applicable state and federal <br /> emission standards as well as applicable worker health and safety <br /> standards. <br />