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STORMWATER MANAGEM, r PLAN 2/20/09
<br />Maryland Creek Ranch
<br />4. POTENTIAL POLLUTANT SOURCES (MATERIALS INVENTORY)
<br />Following is a description of all potential pollutant sources, including materials and areas. For
<br />each material, the storage method and possible pollutants are described. For site areas, the
<br />location, potential pollutants, and their possible flows are described. See Site Map for locations.
<br /> POTENTIAL
<br />MATERIALS INVENTORY DESCRIPTION POLLUTANT
<br /> Graded, revegetated to prevent runoff, located Total Suspended
<br />TOPSOIL STOCKPILES along property and in mining area Solids sediment
<br />OVERBURDEN Graded, revegetated to prevent runoff, located TSS (sediment)
<br />STOCKPILES along property and in mining area
<br />RAW MATERIAL Graded, located within pit, stormwater runoff would TSS (sediment)
<br />STOCKPILES run toward retention/detention areas within it
<br />PRODUCT STOCKPILES Graded, located within pit, stormwater runoff would TSS (sediment)
<br /> run toward retention/detention areas within it
<br /> Enclosed tank, contained with berms around tank, Hydrocarbons
<br />DIESEL FUEL kept on impervious surface, located in it diesel fuel
<br /> Enclosed tank, contained with berms around tank, Hydrocarbons
<br />UNLEADED GASOLINE kept on impervious surface, located in it (gasoline)
<br /> Enclosed containers, kept on impervious surface, Hydrocarbons
<br />LUBRICATING FLUIDS stored in shop or storage trailer various lubricants
<br />ASPHALT CEMENT Enclosed tank, contained with berms around tank, Hydrocarbons
<br />STORAGE TANKS kept on impervious surface, located in it (asphalt cement - oil
<br />ASPHALT ADDITIVES Enclosed tank, contained with berms around tank, Hydrocarbons
<br /> kept on impervious surface, located in it
<br />CONCRETE Enclosed tank, contained with berms around tank, pH
<br />ADD-MIXTURES kept on impervious surface, located in it
<br />CEMENT STORAGE Enclosed silo or trailer, located within pit pH
<br />FLY ASH/LIME STORAGE Enclosed silo or trailer, located within pit pH
<br />SITE AREAS DESCRIPTION POTENTIAL
<br />POLLUTANT
<br /> Interplant and access roads are compacted
<br />HAUL ROADS materials, drainage from roads designed to run TSS (sediment)
<br /> toward retention/detention areas within it
<br />EQUIPMENT PARKING Equipment parked or stored near shop or storage TSS (sediment), Oil
<br /> trailer in pit, compacted materials used, drainage & Grease,
<br />AND STORAGE would run to retention/detention areas within it Hydrocarbons
<br /> Maintenance areas may be in shop (if available), or TSS (sediment),
<br />MAINTENANCE AREAS in equipment storage area, drainage would run O&G, Hydrocarbons
<br /> toward retention/detention areas within it
<br />OFFICE AND SCALE Located on north perimeter of property, TSS (sediment)
<br /> Located within pit, compacted materials used for TSS (sediment),
<br />EMPLOYEE PARKING parking area, drainage would run toward O&G
<br /> retention/detention areas within it
<br />ACTIVE MINING AREA Drainage would run toward retention/detention TSS (sediment)
<br /> areas within it
<br /> Crushing, screening, and wash plants, concrete
<br />PROCESSING AREA and asphalt plants, located within pit, drainage TSS (sediment), pH,
<br /> would run toward retention/detention areas within O&G, Hydrocarbons
<br /> it
<br />EQUIPMENT WASH Located within pit, drainage would run toward TSS (sediment), pH,
<br />AREA retention/detention areas within it O&G, Hydrocarbons
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