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NEWMONT <br /> the pond level to below threshold conditions in a reasonable timeframe. <br /> DRMS Comment(italics): <br /> 67 Exhibit U- Section 18.1. Events Requiring Reporting (cis well as Exhibit G —Section 3.3 Phase 3 <br /> P,SS4 .Monitoring) lists the permit criteria for reporting scenarios of exceedances of'permit <br /> conditions. Regarding the Low G olume Solution Collection Svstem IL 6 SCS), the.4pplic•ant states the <br /> transducers monitoring data in the L GSC:S or LDCRS exceed hvo,feet in a sustained manner. .-1,tl- <br /> 13 does not define what the LDCRS acronym means. Please confirm the LDCRS is the External <br /> Storage Pond's Leak Detection Collection and Recovery Svstem. Please also provide details <br /> regarding how the.4pplicant determines hove long a sustained manner is. <br /> Newmont Response: <br /> CC&V confirms that LDCRS is the Leak Detection Collection and Recovery Svstem for the External <br /> Storage Pond. This acronym has been added to the List of Acronyms provided in Attachment 1. <br /> Due to several factors, including variability in environmental conditions, a sustained manner will be <br /> determined based on field conditions, controls in place and response efficacy. Generally, a sustained <br /> manner in the context used in Exhibit U, is when typical operational controls fail, or may fail, to reduce <br /> the pond level to below threshold conditions in a reasonable timeframe. <br /> 6.5 GEOTECHNICAL STABILITY EXHIBIT (previously submitted material accepted) <br /> APPENDIX 1 <br /> DBMS Comment(italics): <br /> 68. Section 1.1, p. 1. Please provide additional descriptions of 1) Run of.Mine Ore, and?) "Rough <br /> Tailings"and include the source(s) of*both. <br /> Newmont Response: <br /> "Run of Mine Ore"' is defined as ore material that is not campaigned through a crushing unit. In alignment <br /> with accepted industry terminology, "Rough tailings— has been modified to "tailings", which is defined as <br /> a mill processed ore byproduct. Revised design documents are included as Attachment 13. <br /> DBMS Comment(italics): <br /> 69. Section 1.1, p. ?. Post closure surface water diversion channels. CC'&G'personnel recently told the <br /> Division stormwater channels were being designed,for the 500-vear, 4-hour storm event. The last <br /> paragraph before Section 1.2 on page ? .states the VLF2 channels are designed for the 100-year, <br /> 4-hour event. Ti by the change:' <br /> Newmont Response: <br /> The closure channels were designed to pass flow generated by a 500-year, 24-hour storm event. This test <br /> has been corrected in the report for the updated design provided in Attachment 13. <br />