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SECTIONFIVE Conclusions and Recommendations <br />samples along 2 to 3 profile lines from the crest extending into the impoundment. <br />Selected samples will be tested to measure index properties of the tailing. <br />> Evaluate the tailing beach and beach topography to verify the beach slope is consistent <br />with that envisioned in the original design. The beach area should be surveyed near the <br />end of the first spigot season. Evaluation of the differences with prior surveys should be <br />performed on an annual basis. <br />➢ Maintain the decant pond at least 500 feet from the crest under normal conditions. <br />> Implement weekly review of the data from currently installed piezometers during start- <br />up. Piezometric data review may be decreased to a monthly basis as deemed appropriate <br />by the FOR and based on weekly reading reviews. <br />> Install additional piezometers, as deemed necessary, along the crest and face of the dam <br />to evaluate the phreatic surface and changes resulting from tailing deposition. Frequency <br />and location of piezometer installation will be established during regularly scheduled <br />inspections and piezometric data review. Initial piezometric data generated at start-up <br />will be reviewed with consideration to whether additional piezometers are required. <br />Should variations in the material properties be identified, the source or cause should be reviewed <br />and it may be potentially necessary to revise the stability analyses. The need for updating the <br />stability analyses should be reviewed by the engineer -of- record and implemented as needed in <br />the future. <br />The recommendations provided above are common to any start-up, expected and planned for at <br />this dam, and typical for construction of an upstream method tailing dam. The recommendations <br />have been discussed with Climax and will be implemented as part of the operations strategy and <br />as part of normal operation and maintenance. Implementation of the recommendations will be <br />addressed in the Tenmile TSF Operations and Maintenance Manual. <br />URS PROJECTS122242095CLIMAX STARTUP PROJISUB 001720 WORD PROCl3 DAM SEEPAGE-STABILRYWINAL%FINAL 3 DAM ANALYSES RPT R4 DRMS DOCX 5 -2 <br />