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Threatened, Endangered, and Sensitive Species: In the future, if water depletions associated with mining activities exceed 0.2 acre feet per year evaluated in this document, BLM would be notified so that further water depletion payments, or consultation with U.S. Fish and Wildlife Service can be initiated. If, in the future, additional effects on species listed under the Endangered Species Act are evident, consultation with the U.S. Fish and Wildlife Service would be reopened. If the mine is to be inactive for more than one year, the portal would be closed in a manner sufficient to prevent colonization by bats. Closure of the mine opening during reclamation would consist of a "permanent" closure, the design of which would be developed in cooperation with CDRMS and BLM. Temporary and "permanent" closures should be installed in such a manner so as not to entomb any stray bats that may have entered the workings, i.e. using netting that allows exit, but not re-entry during a 24hr period. Wastes/Hazardous or Solid: • Signs would be posted on site that identifies potential hazards associated with the mining operation including chemical hazards. • The mine site would be designed in such a manner as not to allow offsite runoff water to enter the pad. • Material Safety Data Sheets for any chemicals would be maintained on site. • Sanitary facilities would be required on location. • Any fuel spills would be immediately reported to the authorized officer, and copies of all characterization and remediation spill data and reports would be filed within two days with the authorized officer. Spill reporting, containment and cleanup would occur immediately and would be removed to the nearest approved landfill. • All trash and domestic solid waste would be collected from the mine location and the surrounding area and removed to an approved sanitary landfill. Water Quality, Surface and Ground: • Water bars would be built on existing roads to control erosion as directed by the authorizing officer: Grade S acin 2% Eve 200 feet 2-4% Eve 100 feet 4-5% Ever 75 feet 5+% Every 50 feet • The access roads and the mine site may require gravel if road conditions deteriorate due to mine traffic. • Design floodwater retention facilities (for storm water runoff) using the 25 year recurrence interval, 6 hour precipitation event (estimated to be 1.6 inches of precipitation, from: NOAA 4