2012-10-05_REVISION - M1977342 (14)

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Climax Molybdenum Company HENDERSON MINE & MILL SWMP Empire & Parshall, CO December, 2011 Page 5-4 • Materials are appropriately labeled and Material Safety Data Sheets (MSDSs) shall be available onsite; • Inside areas shall be swept and cleaned on an as needed basis; and • Outdoor areas shall be routinely observed and cleaned when necessary. 5.5 Spill Prevention 5.5.1 Spill Prevention and Preparedness Spill prevention practices are designed to reduce the possibility of storm water contamination and include: • Contractors are required to comply with the BMPs outlined in this SWMP and/or submit a detailed spill prevention plan; • Wherever significant quantities of toxic materials or other pollutants are to be used on site by Contractors, the contractor is required to notify the environmental department and prepare a specific procedure for material containment and spill prevention. Spill prevention and response measures for chemicals used by the Henderson Operations are addressed by the Materials Containment Plan and Incident Response Manual developed in compliance with each site’s NPDES permit; • Fuel oil spill prevention procedures for temporary fuel tanks comply with the facility’s SPCC Plan, including placement within adequately sized and impermeable containment structures. If discharging of water collected within containment structures is necessary, it shall first be inspected for signs of contamination. If contamination is present the water shall be diverted to the facility’s process water system or hauled off-site; • Fueling operations and vehicle maintenance shall be performed at designated facilities; • When possible, chemicals shall be stored inside buildings or in covered storage sheds; When this is not possible, containers shall be placed in appropriate containment structures so as to capture a release prior to it contaminating storm water; • Drip pans and buckets shall be used during maintenance activities and at locations where leakage is probable; • Spill cleanup kits shall be marked and readily available near locations where spills are probable; and • Releases shall be immediately cleaned up after their discovery. 5.5.2 Spill Response Procedures Spill response procedures are addressed within several Henderson environmental management system documents including this SWMP, the Spill Prevention Control and Countermeasures / Materials Containment Plan, Drinking Water Monitoring Plans, Environmental Management System (EMS) Manual and Incident Response Manual (IRM). In each instance, procedures shall provide reference to the IRM which serves as the primary environmental emergency response document and provides specific procedural guidance related to spill response measures. 5.6 Employee Training Employees and contractors who are involved with mining activities that may impact storm water runoff receive training on the components and goals of this SWMP including, as