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SECTIONSIX <br />Monitoring and Inspection <br />Inspections are essential in order to identify problems requiring maintenance or repair of the <br />dam, and safety deficiencies that could threaten the dam, workers, visitors, and downstream <br />populations, if not detected early. This Section is intended to identify personnel responsible for <br />performing inspections, the frequency of the inspections, and the items requiring inspection. <br />Complete and accurate records and reports of inspections provide information critical to proper <br />operation of the dam. Records and reports provide important, continuous documentation of <br />performance, and are valuable tools. <br />6.1 PIEZOMETER MONITORING PROGRAM <br />Twelve open well standpipe piezometers are arranged in three study sections at 3 Dam. The <br />monitoring system has been changed from manual reading to vibrating wire piezometers with <br />individual data loggers installed within the open well casings. Climax personnel also record <br />manual readings if the data loggers are compromised. <br />A new automated telemetry system is being installed that will record piezometric levels twice <br />daily. Designated Climax personnel will have access to the central data base to download <br />recorded data. The system will trigger notification at designated fluctuations. The notification <br />indicates review is required when phreatic elevation increases greater than 5 feet in a one -month <br />period, greater than 5 feet in a three -month period, and greater than 10 feet in a one -year period. <br />6.2 CLIMAX STAFF INSPECTIONS <br />It is the responsibility of each tailing dam operator to observe the dam during his or her shift and <br />report any unusual or abnormal conditions. An operator is a person with the most exposure to <br />the tailing dam facility, who has the most intimate knowledge of "usual" conditions. The <br />operator will also inspect his or her respective facility, area, and/or equipment during or after any <br />intense storm or seismic event if he or she can do so safely. An intense storm event or major <br />rainfall is defined as greater than 0.5 inches of rainfall in 24 hours. If safety precautions prevent <br />inspection or observation during or immediately after an event, the facility or area will be <br />inspected as soon as safely possible. Senior tailing engineers will also complete event - driven <br />inspections, routinely inspect the tailing dam for cracking, seepage, signs of instability, and <br />erosion, and inspect the dam following heavy precipitation or other unusual events (e.g., <br />earthquakes). <br />Identified personnel will visually monitor the dam on a weekly basis. Observations will be <br />recorded and are to include, at a minimum, the following: <br />• Date and time of inspection <br />• Inspection personnel <br />• Decant pond level <br />• Beach width <br />• General condition of the dam and appurtenances <br />• Equipment condition/status (if applicable) <br />• Signs of vandalism or damage (if applicable) <br />URS ROJECTS 122242095__CLIMAXSTARTUP PROJISUS 00\12 O WORD PROCVTENMILE O&MFINAL RPT\TENMILE O&M PLAN FINAL_R3_DRMS DOCX 6-1 <br />