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D7007-Standard Practices for Electrical Methods for Locating Leaks in Geomembrane Covered <br /> with Water or Earthen Materials. <br /> This method of investigation is a widely accepted industry practice, creating an understanding of <br /> liner conditions with a high level of confidence. Similar tests have been used during construction <br /> activities at the Arequa Gulch Valley Leach Facility and VLF2. Historically, DRMS has accepted <br /> the results of these analyses at CC&V, certifying the construction of the VI-Fs as Environmental <br /> Protection Facilities (EPF). <br /> Additionally, daily leak detection monitoring will continue while the test is being performed. <br /> Results from this test will be provided in writing to DRMS. If the test results conclude the liner <br /> has been compromised, the impacted portion of the liner will be exposed and repairs will be <br /> made to the damaged sections. These repairs will be observed and documented by a <br /> NewFields' certified engineer. A Quality Assurance Monitoring Test Report will be submitted to <br /> the Division for acceptance and recertification of the VLF2 liner as an EPF. <br /> If the results of the resistivity test confirm the slide did not compromise the liner integrity, <br /> NewFields will document the backfilling of drain cover material over the exposed liner and <br /> prepare a certified report summarizing the work and leak detection survey results. This <br /> certification report will be provided to the Division at the conclusion of the survey. <br /> Schedule <br /> CC&V anticipates initiating the liner integrity investigation in early April, 2018. Depending on the <br /> test results, and if any liner repairs are required, the liner investigation and recertification <br /> process will likely take several weeks to complete. Additionally, weather conditions and <br /> equipment availability may impact project schedule. CC&V commits to providing status updates <br /> to DRMS as necessary. <br /> Financial Warranty <br /> Newmont has determined the investigative work described in this TR will not affect the financial <br /> warranty carried with the state. <br /> Enclosed please find check no. 200033739 in the amount of $1,006 for the technical revision <br /> fee. Should you require further information please do not hesitate to contact me at (719) 689- <br /> 4046 or Meg.Burt(a-)-newmont.com. <br /> Sincerely, <br /> Meg Burt <br /> Environmental Manager <br /> MB/cs <br /> Attachments <br /> ec: T. Cazier— DRMS <br /> File <br />