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Memorandum in Response to Notice of Determination of Designation Mining Operation (DMO); DRMS File Numbers <br />M-1977-416, M-1978-039 HR, M-1977-285, M-1980-055 HR, M-1981-021 and M-1977-032. <br />• CDPHE Air Permit for the Sunday Mines, inspection and reporting <br />requirements. <br />• The EPA's NESHAPs monitoring and reporting requirements for radon <br />emissions~from mine ventilation systems. <br />• Monitoring and reporting requirements for the Mine Safety and Health <br />Administration (MSHA) to ensure protection of worker health and safety at <br />the Mine sites. <br />• San Miguel County's approval of any Septic Systems in use at the Mine sites. <br />• San Miguel County's Special Use Permit requirements. <br />• San Miguel County's Road Use Permit requirements. ' <br />• BLM Plan of Operations and NEPA decision records`and findings of no <br />significant impact (when finalized). This wouldiielude wildlife, cultural, <br />paleontological assessments of potential impacts, mitigation requirements and <br />best management practices used to ensure that the mine operations are <br />protective of human health and the environment'and that mine activities do <br />not cause unnecessary or undue degra""elation of,federal lands. <br />• Monitoring and reporting requirements for the Department of Homeland <br />Security for explosives used in mining operations-(potentially confidential <br />information). <br />• State Engineers Office underground water use monitoring requirements. <br />Section 6.4.20 (4) -Denison will provide other;pei~nits and licenses identified above <br />in Section 6.4.20 (3). <br />Section 6.4.20 (S) -'Denison does not use chemicals in processing at the mine sites; <br />therefore an evaluation of designated chemicals will not be provided. <br />Section 6.4.20 (6) -benison wilLproyide reclamation procedures for waste rock piles <br />based on tlie' Indings ofthe AMD and MWMP testing and meetings with the <br />Division if additional protection than what is currently provided in existing permit <br />documents is required::. If the data,atlalysis leads to a requirement for new <br />construction at the mine sites, then a QA/QC plan will be prepared for this new <br />construction. <br />Section 6.4.2.0::(7) -Denison will provide a facility evaluation based on site specific <br />conditions obtained m'Phase 1. This will include information from the site specific <br />drainage reports for the engineered surface water protection measures. <br />Section 6.4.20 (8) -Denison will provide groundwater information as discussed above <br />in the hydrogeologic reporting obtained in Phase 1. <br />Section 6.4.20 (9) - If appropriate and available, Denison will provide groundwater <br />data based on the information obtained in Phase 1. <br />Section 6.4.20 (I1) -Annual rainfall at all of the mines is minimal, and surface water <br />sampling would be difficult to obtain. However, if possible, surface water samples <br />will be collected from mine permit boundary discharge points. <br />7 <br />