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the wash area is directed towards the sand and grease trap which is part of the wash area <br /> a system. <br /> 23.1 Potential Contaminant Sources <br /> Potential contaminant sources associated with the vehicle maintenance shop include both <br /> _ virgin and waste crankcase oil, hydraulic fluid, brake fluid, and lubricants. Potential <br /> contaminants from the wash area include sediment and residual oil and lubricants. <br /> _ The vehicle maintenance fluids and lubricants associated with vehicle maintenance are <br /> retained in approved containers inside of the maintenance shop. Waste fluids are <br /> periodically removed from the site by licensed haulers. Wash water from the equipment <br /> _ wash area is routed through a sand and grease trap to a holding tank. Wash water is <br /> recycled in accordance with Waste Discharge Requirements issued by the California Central <br /> Valley Regional Water Quality Control Board (incorporated herein by reference). <br /> 2.4 Boneyard <br /> The Boneyard consists of approximately 2 acres west of the active Quarry. The Boneyard <br /> is used for storage of materials. Materials stored in the Boneyard include primarily metal <br /> structural supplies, metal and PVC pipe, fencing supplies, and scrap lumber. The location <br /> of the Boneyard is shown in Figure 2. <br /> - 2.4.1 Potential Contaminant Sources <br /> No potential contaminant sources are associated with the Boneyard. <br /> 2.5 Pristine and Reclaimed Areas <br /> The Pristine and Reclaimed Areas are shown on the Site Map, Figure 2. The Pristine <br /> portions comprise the reserves to be mined at a later date, as well as areas not intended to <br /> be mined. Reclaimed areas are those areas that have been mined and rehabilitated and are <br /> no longer impacted by, or involved in current site operations. <br /> The Pristine portion of the property is comprised of rolling hills dissected by northwest- <br /> flowing ephemeral drainage courses. Reclaimed areas are situated west of the staging area <br /> for conveyor loading from the quarry. This area has been graded flat and seeded. <br /> 2.5.1 Potential Contaminant Sources <br /> Potential sources of contaminants associated with the pristine areas of the site come from <br /> the planned excavation of overburden materials, excavation into raw materials, and <br /> production of waste materials. Potential contaminants associated with reclaimed areas <br /> Stam Wier Management Plan-HRC Aggegete Inc <br /> BSH Pr.jea Nn 59210/2 4 <br /> Revised January 1991 <br />