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• Two piezometers will be used to furnish groundwater level measurements, <br />• Baseline data will be collected from the piezometers on a monthly basis (collected prior to <br />dewatering operations), <br />• The piezometers will be monitored on a monthly basis during dewatering operations and <br />the baseline data will be used to evaluate potential affects to the groundwater table, <br />• A plan will be developed to mitigate potential off-site affects to the groundwater table and <br />surrounding groundwater users, and <br />• Monitoring data will be provided to the Division of Reclamation, Mining, and Safety (DRMS) <br />in annual reports. <br />Two piezometers will be installed on the SerFer site. The locations of the piezometers were <br />discussed and agreed upon with DRMS staff. A site map illustrating the location of the two <br />piezometers is presented in Figure 3. The piezometers will be constructed of 4-inch slotted PVC <br />pipe and will extend through the entire length of the unconsolidated material and into bedrock <br />Lean 3/4 inch pea gravel was used as filter packing around the slotted pipe. A typical piezometer <br />completion diagram is presented in Figure 4. <br />Prior to the beginning of dewatering activities, water level measurements will be collected from the <br />piezometers on a monthly basis. The baseline monitoring data from the piezometers will be <br />summarized and plotted. Once the base line data is collected, an action level will be determined <br />and approved by DRMS. <br />During mining and dewatering activities, the piezometers will be monitored for groundwater <br />elevation once per month. Field observations will be made to assure that the piezometer casing <br />and surrounding area are in good condition. Depth to water and elevation measurements will be <br />recorded in a field notebook and stored in a data management system for quality control and <br />reporting. <br />If the groundwater elevation in the piezometer closest to the objectors' property drops to the <br />specified action level, the DRMS will be notified within five (5) working days. If the measured <br />groundwater elevations are above the identified action levels, monthly monitoring data will be <br />submitted to the DRMS with other required annual reports or as specified by DRMS staff. <br />MITIGATION PLAN <br />If groundwater elevation in any of the Piezometers falls below the identified action levels, the <br />operator will submit further investigation results and/or a more comprehensive mitigation plan <br />within 30 days of the action level measurement. <br />The operator does not anticipate dewatering operations at the site to affect groundwater levels in <br />the wells or surrounding landowners. However, if the groundwater elevation in the Piezometers <br />drops below the action level and water levels drop in adjacent wells, additional evaluations may be <br />performed to determine if the impacts are a result of mining and/or dewatering activities. If it is <br />determined that impacts to groundwater elevations and decreasing water levels in adjacent wells <br />are the result of dewatering at the SerFer Pit, the mitigation plan may include the following actions: <br />1. The existing well may be modified to operate under lower ground water conditions. This <br />could include re-drilling the existing well to deeper depths or lowering the pumps. All work <br />Connell Resources, Inc. I Serfer Pit Groundwater Monitoring Plan