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Site Monitoring and ReportinE <br />Quarterly water sampling in accordance with TR-06, TR-15, TR-26, QA/QC took place through <br />out the year. Analysis reports were submitted to CDMG upon receipt from the lab. <br />Weekly and bi-weekly sampling, in accordance with NOV abatement requirement No. 3 and <br />water level reading frequency continued throughout the year. Analytical reports have been <br />submitted to the CDMG upon receipt from the lab. <br />Lysimeters have been checked quarterly throughout the year and have remained dry. <br />Sampling of the San Luis town wells and The Shalom Ranch well and headgate occurred <br />monthly and results have been forwarded to the applicable parties. <br />The underdrain at the base of the tailings embankment was monitored monthly for rate of <br />seepage. The underdrain continually flowed at ao average of 28 gpm. <br />Staff gauges were read daily from April -June and weekly during the other months. RS-4 and <br />RS-6 continue to be dry. The staff gauges received routine maintenance during the year. <br />The tailings embankment piezometers have been checked and monitored monthly. <br />The collection pond leak detection system was sampled and pumped monthly. The return flow in <br />the system averaged 33 GPAD for 2000. <br />As specified in the approved TR-010, weekly and monthly pond compliance reports have <br />been submitted to the CDMC. <br />A total of 6,202900 gallons of brine water (19.03 acre feet) and 18,601,988 gallons (57.09 acre <br />feet) of West Pit groundwater was transported from the water treatment plant to the tailings <br />impoundment during the calendar year. This was conducted in accordance with TR-approval <br />to maintain operation of the West Pit water treatment plant. 30 ~ d6 <br />TECHNICAL REVISIONS <br />The Colorado Division of Minerals and Geology (CDMG) approved TR-26 on May 23, 2000. <br />Battle Mountain has been actively managing the West Pit hydrologic system since July 1999, and <br />the water management plan developed in TR-26 has been fully implemented according to <br />schedule. The water management techniques employed since the submission of TR-26 to CDMG <br />has reversed the West Pit hydrologic gradient since February 8, 2000 eliminating any surface <br />water seepage expressions. Groundwater recovery wells M-32 and M-33 were installed during <br />calendar year 2000 to capture and contain downgradient migration of contaminates contained in <br />the Rito Seco alluvial groundwater system behveen the West Pit and the recoven~ wells. These <br />actions have substantially improved the West Pit and Rito Seco alluvial groundwater quality. <br />