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STORMWATER MANAGEMENT PLAN MORRISON QUARRY <br /> REVISION NO.8 1 August 2022 CERTIFICATION NO.COG500320 <br /> 3. FACILITY INVENTORY AND POLLUTANT SOURCES <br /> This section describes all areas associated with industrial activities that are in contact with <br /> stormwaterand have the potential to contribute pollutants to stormwater. Drainage, operations <br /> and potential pollutant sources are described for each area. Table 1 provides a summary of <br /> facility areas and potential pollutant sources. <br /> 3.1 FACILITY SOURCES (ASSESSMENT OF POTENTIAL POLLUTANT SOURCES) <br /> This section provides a description of potential pollution sources that could potentially be <br /> added to stormwater discharges, orwhich may result in the discharge of pollutants during <br /> dry weather. Table 1 identifies all areas and materials associated with industrial activities <br /> that have the potential to contribute pollutants to stormwater. <br /> Significant materials include, but are not limited to: raw materials; fuels; materials such as <br /> metallic products; hazardous substances designated under section 101 (14) of the <br /> Comprehensive Environmental Response, Compensation and Liability Act (CERCLA); any <br /> chemical the facility is required to report pursuant to section 313 of Title III of the <br /> Superfund Amendment Reauthorization Act (SARA); fertilizers; pesticides; and waste <br /> products such as ashes, slag and sludge that have the potential to be released into state <br /> waters with stormwater discharges. <br /> 3.1.1 TRUCK AND EMPLOYEE PARKING <br /> When not in use, mining trucks are parked in a large parking area in the middle of the <br /> quarry. This is generally graded flat with gravel surfaces and any stormwater would <br /> remain in the area. Employee parking areas are located at various locations around <br /> the plant and at the office. These areas would drain east towards the stormwater <br /> retention pond during high intensity or long duration precipitation events. <br /> Potential pollutants associated with the truck oremployee parking areas include fuels <br /> and oils from the vehicles, and sediment that accumulates on trucks while driving.The <br /> potential for pollutants to enter stormwater is low since stormwater that would come <br /> into contact with truck or employee parking areas percolates into the ground or is <br /> directed towards a stormwater retention pond where it is allowed to settle and is <br /> visually observed for oil/grease. <br /> 3.1.2 AGGREGATE STOCKPILE AREA <br /> The aggregate stockpile area is located west of the plant. Stockpiled materials <br /> include aggregate (sand and gravel) which are stored in large stockpiles.The surface <br /> of this area is gravel. Drainage is to the stormwater retention pond next to the scales <br /> or to the reservoir. <br /> 13 <br />