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TABLE 1 <br /> SUMMARY OF SOIL ANALYTICAL RESULTS (TPHc and BTEX) <br /> VERNALIS OFFSITE <br /> Vernalis, California <br /> Concentrations in mg/kg <br /> Sample <br /> Depth Date Ethyl- Total <br /> Boring ID (feet bgs) Sampled TPHc Benzene Toluene :benzene Xylenes <br /> SCREENING ESL 41040.044 2.9 3.3 ' 2 3 ` <br /> LEVELS PRG --- 0.002 e 0.6 e 0,7 a 101 <br /> SB-26 5 2/27/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> 31 2/27/2008 4.2 <0.0005 <0.001 <0.001 <0.001 <br /> SE 27 5 2/27/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> 33.5 2/27/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> SB-28 5 2/26/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> 38 2/26/2008 <4,0 <0.0005 <0.001 <0.001 <0.001 <br /> SB-29 5 2/26/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> 36.5 2/26/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> SB-31 5 2/25/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> 37 2/26/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> SB-32 5 2/25/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> 35 1 2/25/2008 1 <4.0 1 <0.0005 <0.001 <0.001 <0.001 <br /> SB-33 5 2/25/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> 36 2/25/2008 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> Abbreviations: <br /> <=Denotes analyte not detected at or above the laboratory reporting limit <br /> bgs=Below ground surface . <br /> BTEX=Benzene,toluene,elhylbenzene,and total xylenes <br /> EPA=U.S.Environmental Protection Agency <br /> ESL=Environmental Screening Level <br /> ID=identification <br /> LOQ=Limit of Quantitation <br /> MDL=Method Detection Limit <br /> mg/kg=Milligrams per kilogram <br /> PRG=Preliminary Remediation Goal <br /> RWQCB=Regional Water Quality Control Board <br /> SAIC=Science Applications International Corporation <br /> TPHc=Total petroleum hydrocarbons quantified as crude oil <br /> Notes: <br /> 1. Samples were.collected by SAIC and analyzed by Lancaster Laboratories,Inc, for TPHc using EPA Method 8015E <br /> modified(C1,Csb),and BTEX using EPA Method 8260B. <br /> 2. Results presented in bold exceed PRGs and/or ESLs. <br /> 3. See Appendix D for data usability summary. <br /> 4. ESL Direct Exposure(Human Health) <br /> 5. ESL"Leaching to Groundwater"concentration in soil for the protection of current or potential drinking water resource <br /> based on concentration modeled to leach to groundwater at or above the health-based screening level. <br /> 6. PRG Soil Screening Level for the protection of groundwater(dilution attenuation factor of 1). <br /> Sources: <br /> ESLs from the San Francisco Bay RWQCB Screening for Environmental Concerns at Sites with Contaminated Soil and <br /> Groundwater (Interim Final February 2005). <br /> PRGs from EPA"Region 9 PRGs Table"(October 2004). <br /> Page I of I From Science to Smettons <br />