2012-02-28_REVISION - M1980244 (82)

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2.0 SPILL PREVENTION AND CONTROL 2.1 Engineering and Structural Controls To Guard Against Spills The Cresson Project has been constructed with spill containment around fuel storage areas, chemical storage areas, maintenance areas, and the areas in which cyanide solutions are present. Secondary containment structures have been designed to prevent spilled materials from entering stream channels, escaping onto areas subject to storm water runoff, and migrating off site. Such control features will be maintained and will function at their design capacity. To ensure that synthetically lined earthen containment berms are working properly, they will be inspected monthly, they will be cleaned out when foreign objects or trapped water threatens to diminish the containment capacity, and they will be repaired whenever cracks in the berm or tears in the liner compromise containment. Concrete containment structures will also be inspected, cleaned out, and repaired as required. The mining, vehicle maintenance, and leaching facilities all have built -in protections against spills and leaks. Specific design criteria, which emphasize attention to spill and leak prevention, containment, chemical storage, and environmental monitoring, have been incorporated into the overall plan. Examples of specific facility designs that help control spills include: (1) high level alarms and continuous recording of tank volumes in the New Truck Shop bulk oil storage facilities; (2) designed and constructed floor sumps in the Ironclad small vehicle shop and truck shop; (3) engineered oil skimmers in the truck wash bays; and (4) aerosol can depressurizing units mounted on used paint storage drums within an overpack drum at various locations throughout the site. Certain CC &V mine facilities have been located to providefor optimum environmental control. Such facilities are located outside of drainages and flood plains or, surface -water diversions have been installed to minimize surface water run -on and run -off. Transfers of materials subject to control under this SRP /SPCC will be conducted in accordance with CC &V procedures described in Section 5.1. CC &V Team Members assigned to operations involving transfer of chemicals or fuels and lubricants are responsible for implementing these procedures. 2.2 Management Controls to Guard Against Spills The CC &V facility recognizes certain Best Management Practices (BMPs), which can prevent many spills from occurring. Among the more important BMPs employed at CC &V facility are the following: Good Housekeeping - This refers to the conscientious effort of employees to maintain work areas so that spilled materials are not allowed to be released into the environment. Clean, uncluttered work areas promote safety and help prevent spills. Preventive Maintenance - CC &V personnel utilize the inspection and monitoring function as a means to identify where and when BMPs need to be updated. CC &V management is committed to updating and improving BMPs through periodic inspections (see below) and follow -up. Material Handling Practices - Environmentally safe handling of materials which could be spilled is an important practice at CC &V. Hazardous materials are stored inside curbed containments in the ADR plant, bulk oil is stored within concrete - walled or lined earthen berm containments described elsewhere in this plan, and employees are instructed in the environmentally safe handling of these products. These are some of the examples of materials storage practices utilized by CC &V team members to reduce the likelihood of material spills. Visual Inspections - Visual inspections are conducted and records are maintained onsite. Spill Response Plan EMS: AGANAICCV G:\EMS1PIans\Emergency Response Plans\SRP Plan\SRP Plan.doc Printed Copies are Uncontrolled August 17, 2010 Doc. # E -006 Revision 05 7