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Fill <br /> Site Investigation and No Further Action Request Repo <br /> ji,g} R$L Diesel Services, Project#051111 <br /> Sine 054 <br /> Soil analytical results were compared with San rancisco Regional Water Quality <br /> Control Board's Environmental Screening Levels(ESL ) for deep soils (>3 m) in an exterior <br /> { commercial setting. The ESLs are concentrations of hazardous chemicals that the SFBRWQCB <br /> considers to be concentration thresholds for risks to human health. <br /> �F'F' <br /> The laboratory reported all soil samples results were below laboratory's minimum <br /> detection limits (MDL). <br /> 3.2.2 Groundwater Sampling and Analysis <br /> Following termination of the soil boring, one groundwater sample was collected using a <br /> Ft disposable bailer. The groundwater was placed in clean laboratory supplied glass sample <br /> containers, sealed, packaged in an iced cooler, and transported with chain-of-custody <br /> documentation to Sparger for analysis of TPH-D and T H-G by EPA Method 8015M and for <br /> volatile organic compounds, including BTEX and PCE, by EPA Method 8260B. <br /> The laboratory reported that the groundwater sample results were below the laboratory's <br /> detection limits for all analytes except for PCE at a concentration of 4.1 micrograms per liter <br /> (ug/1). This concentration is below the California Primay Maximum Contaminant Level (PMCL) <br /> of 5.0 ug/l. <br /> Soil and groundwater analytical results are presented on Figures 4 and 5, respectively, <br /> and summarized in Tables 1 and 2. The laboratory analytical reports are included in Appendix <br /> C. <br /> 3.3 Waste Management <br /> r <br /> 4 <br /> Soil cuttings were placed on plastic sheeting, covered, and stored on-Site until the soil is <br /> profiled for disposal. A sample of the drill cuttings was analyzed for TPH-D by EPA Method <br /> F-' 8015M, BTEX by EPA Method 8260B, and total lead by EPA Method 60108. <br /> Equipment rinseate water was placed in DOT-a proved 55-gallon drums and labeled <br /> accordingly. As with the drill cuttings, the drums were properly labeled and stored on-site <br /> pending laboratory analyses and selection of an appropriate disposition. <br /> F <br /> C. <br /> A <br /> I <br />