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North County Recycling Center and Sanitary Landfill <br />Storm Water Pollution Prevention Plan <br /> <br /> <br /> <br />Page 22 <br />6.1.7 Sources of Pathogens and Bacteria <br />Because of the inclusion of Escherichia coli (E. coli) on the 303(d) list for the receiving water, <br />the County began to test for the presence of E. coli in its storm water discharges. Significant <br />levels of E. coli were observed in the analytical results as summarized in Table 6.1.7a. <br /> <br />Table 6.1.7.A – E. Coli Discharge Sampling Results <br />Date Discharge Location E. Coli (MPN/100ml) <br />1/17/2019 SW-3 >2,419.6 <br />4/06/2018 SW-4 1,413.6 <br />1/17/2019 SW-4 344.8 <br /> <br />Upon receiving these results, the County began a source investigation to determine potential <br />sources of E. Coli in storm water. The following map and table summarize the source testing <br />data to date. <br /> <br /> <br />Septic Leach Field