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Mr. Dustin Czapla 9 <br /> CDRMS <br /> September 24, 2021 <br /> dates, media sampled, method of sampling and analysis employed or to be <br /> employed during mining and reclamation operations to evaluate the effectiveness <br /> of each Environmental Protection Plan facility and activity. <br /> Response <br /> Please see Section 4 Rule 6.4.4 Exhibit D Mining Plan Emergency Response Plan Sec. 16, <br /> Exhibit- Rule 8, (Appendix 14-2-Material Data Sheets) and Cyanide Emergency Response Plan <br /> (attached Appendix 23-1) for management and operating practices. <br /> The reagent inventory is shown in Table 4-9 of the permit application document. <br /> (e) Taking into consideration the nature of the chemicals and the risk to human <br /> health, property and the environment, describe any release response procedures, <br /> redundancies, and "backup" measures necessary, appropriate, and economically <br /> reasonable, to control, prevent and mitigate releases of the designated chemicals <br /> and toxic or acid-forming materials from the containment facility outside the permit <br /> area during mining and reclamation operations. <br /> Response <br /> See attached Appendix 23-1 -Cyanide Emergency and Chemical Response Plan for <br /> management and operating practices <br /> (f) Demonstrate that containment facilities shall be of adequate size to provide <br /> sufficient reserve capacity to prevent a release of designated chemicals or toxic or <br /> acid-forming materials from design storm events plus operational water volumes <br /> during worst case conditions as specified by the Office. <br /> Response <br /> See response to section on Mill Facility, part 1.b and 2.a. <br /> 14. Rule 6.4.21 EXHIBIT U — Environmental Protection Plan — Groundwater <br /> Information <br /> Pursuant to Rule 6.4.21 (8)(b) please identify all known aquifers and related <br /> subsurface water-bearing fracture systems within two (2) miles of the affected <br /> lands. In addition, provide the general direction and rate of flow of groundwater in <br /> these aquifers and fracture systems. <br /> Response <br /> See response to question 15. <br /> 15. Rule 6.4.21 EXHIBIT U — Environmental Protection Plan — Groundwater <br /> Information <br /> Pursuant to Rule 6.4.21 (8)(e) please describe and illustrate the hydrogeology of the <br /> area where surface or groundwater may be impacted by the Designated Mining <br /> Operation activities. Include in the description and illustration, those geologic <br /> strata and fracture systems that have the potential to transmit groundwater. <br /> Response <br /> Glacial tills and outwash sands and gravels make up the geologic foundation within two miles of <br /> the Leadville Mill, with depths exceeding 200 feet. (See attached Appendix 7-1 Diedrich well log <br /> located East of the Mill) The unconsolidated material is characterized as being pebble - to <br /> boulder-sized clasts in a clayey, silty sand matrix with an estimated thickness of 10-200 feet. <br />