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• All areas of soil disturbance <br /> • Locations and descriptions of all potential stormwater pollution sources,including,but not <br /> limited to,the following: <br /> o Materials handling areas <br /> o Vehicle fueling areas <br /> o Fertilizer or chemical storage areas <br /> o Areas used for storage or disposal of overburden,materials, soils,or wastes <br /> o Areas used for mineral milling and processing. <br /> • Boundary of tributary area subject to effluent limitations <br /> • Date the map was prepared. <br /> This SWMP identifies possible sources of pollutants(activities and materials)at the facility,and assesses <br /> the potential of these sources to contribute pollutants to stormwater discharges associated with mining <br /> activities. The SWMP also describes appropriate BMPs to reduce the potential of these identified sources <br /> to contribute pollutants to stormwater discharges. These BMPs are implemented by qualified personnel <br /> employed by Martin Marietta and participating in Martin Marietta's training program. <br /> • Loading and unloading operations. The majority of manufacturing processes at the facility <br /> involve solid earthen materials with inert properties. These materials are not likely to <br /> significantly impair surface water or groundwater. The facility uses an adequate volume of water <br /> to suppress dust,but not in quantities likely to cause runoff. <br /> • Outdoor storage of chemicals or equipment. The only chemicals stored outside at the facility <br /> are petroleum products that include diesel fuel and fuel additives.Heavy equipment,used and <br /> unused,is stored outside at the facility. Fuel, lubricants,coolants,battery fluids,or hydraulic <br /> fluids may be released from this equipment. These materials—in storage and in use in <br /> equipment—are covered by the facility's Spill Prevention Control and Countermeasures(SPCC) <br /> plan. Materials in storage are held in secondary containment units with a capacity of at least <br /> 110%of the container or tank capacity. Heavy equipment(with large fuel and hydraulic oil <br /> tanks)and a refueling truck jointly owned by the facility and a fuel supplier are parked in a <br /> surface depression that is expected to contain all flow on the property. <br /> • Crushing facilities. The facility uses crushing equipment to prepare aggregate from quarried <br /> materials. The crushers are partially enclosed to prevent fugitive dust emissions. Dust from <br /> crushing activities is controlled by application of water,but not in quantities sufficient to generate <br /> runoff. <br /> • On-site waste disposal practices. No waste is disposed of at the facility. Refuse generated at <br /> the facility is managed in roll off containers that are kept closed when not in use. <br /> • Stockpiles. The majority of manufacturing processes at the facility involve solid earthen <br /> materials with inert properties. These materials are not likely to significantly impair surface <br /> water or groundwater. Areas of stockpiled materials(intermediate and finished products)are <br /> graded and bermed to direct runoff carrying suspended solids onto the facility property and <br /> Three Bells Pit Stormwater Management Plan 3 12/2013 <br />