2012-10-05_REVISION - M1977342 (14)

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Climax Molybdenum Company HENDERSON MINE & MILL SWMP Empire & Parshall, CO December, 2011 Page 4-1 4.0 IDENTIFICATION OF POTENTIAL POLLUTANT SOURCES Table 4.1 summarizes the purpose and location of potential storm water pollutant sources associated with the Mine, Mill and Haulage System located in disturbed areas (see Figures in Appendix A for delineation of disturbed and undisturbed areas), areas used for material storage or handling that are exposed to precipitation and other areas with potential sources of pollution. The following information is included within this table. • The location and purpose of each potential storm water pollutant source; • The outfall through which potentially impacted storm water may be discharged; • The likelihood that the potential storm water pollutant source may impact storm water that is discharged off-site; and • The basis for the likelihood determination. The pollutant source numbers (PS#) and outfall numbers (OF-#) in Tables 4.1 may be used to locate the sources on the figures in Appendix A for the Haulage System, Mine, and Mill. Specific preventative maintenance, good housekeeping, preventative measures, and response procedures for each potential pollutant source are identified in Section 5.0. As new potential pollution sources are identified, Table 4.1 shall be updated (as well as Table 5.1, Storm Water Management Maps and Inspection Forms, as applicable). The below key clarifies naming conventions used for pollutant sources and outfalls. PS- Followed by # Pollutant sources at the Mine. PS- Followed by M# Pollutant sources at the Mill. PS- Followed by O# Pollutant sources along the overland conveyer. OF- Followed by # Outfalls at the Mine. OF- Followed by M# Outfalls at the Mill and along the overland conveyor. Stormwater outfalls are identified in the field with 6” x 9” reflective white metal signs with green lettering. An example of an outfall sign is provided below (not to scale). STORMWATER OUTFALL OF-1