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Foothill Landfill <br />Storm Water Pollution Prevention Plan <br /> <br /> <br /> <br /> Page 37 <br />7.1.3 Likely Sources of Pollutants <br />The following areas have been identified as likely sources of pollutants: <br />Table 7.1.1 – Likely Sources of Pollutants <br />Area / Activity Indicator Pollutant Comments <br />Landfill activity <br />Drainage Areas B and D <br />/ ST-5 <br /> <br />Visual observance of <br />floatables and particulate <br />matter; elevated BOD; pH <br />outside of the acceptable <br />range; elevated iron and <br />ammonia concentrations <br />Trash, debris, <br />and sediment <br />Monitored at the ST-5 outfall <br />Drainage Area B does not discharge <br />Vehicle and equipment <br />maintenance, fueling, <br />and washing <br />Elevated oil & grease, <br />BOD, pH and heavy <br />metals <br />Oils, grease, fuel, <br />sediment, and <br />wash water <br />Monitored at the ST-5 outfall <br />Erosion and transport <br />of sediment from wind <br />and rain <br />Visual observance of <br />turbid water an elevated <br />TSS <br />Eroded sediment Monitored at ST-2, ST-3, ST-4, and <br />ST-5 outfalls <br />7.1.4 Likely Pollutants <br />Based on the above information and the historical analytical data included in the annual reports, <br />the following is a list of pollutants most likely to be present in the facility’s storm water <br />discharge. They appear in the following list in the order of their likeliness of being a pollutant <br />present in the discharge. <br />1. Sediment <br />2. Organic enrichment from refuse <br />3. Heavy metals and toxic chemicals <br />4. Pathogens (E. coli) <br />5. Oil & grease / fuels from equipment operations and maintenance <br /> <br />