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TABLE I <br /> SUMMARY OF SOIL ANALYTICAL RESULTS (TPHc and BTEX)l,zs <br /> US CAN-WELTY ROAD <br /> Vernalis, San Joaquin County,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 RSL -- 0.00023 4 0.76 5 0.0019 4 0.23 4 <br /> LEVELS ESL 370 6 0.044 7 2.9 8 2.3 8 2.3 8 <br /> SB-44 5 7/20/2010 <4.0 <0.0005 <0.0009 <0.0009 <0.0009 <br /> SB-44 36 7/20/2010 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> SB-45 5 7/20/2010 10 J <0.0005 <0.001 <0.001 <0.001 <br /> SB-45 38 7/22/2010 <4.0 <0.0005 <0.0009 <0.0009 <0.0009 <br /> SB-46 5 7/21/2010 <4.0 <0.0005 <0.0009 <0.0009 <0.0009 <br /> SB-46 38 7/21/2010 <4.0 <0.0005 <0.001 <0.001 <0.001 <br /> SB-46 44.5 7/21/2010 <4.0 <0.0005 <0.0009 <0.0009 <0.0009 <br /> SB-47 5 7/21/2010 <4.0 <0.0005 <0.0009 <0.0009 <0.0009 <br /> SB-47 34.5 7/21/2010 <4.0 1 <0.0005 1 <0.001 I <0.001 <0.001 <br /> Abbreviations: <br /> bgs=Below ground surface <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> EPA=United States Environmental Protection Agency <br /> ESL=Environmental Screening Level <br /> ID=Identification <br /> J=Estimated concentration detected between MDL and LOQ <br /> LOQ=Limit of Quantitation <br /> MCL=Maximum Contaminant Levels <br /> MDL=Method Detection Limit <br /> mg/kg=Milligrams per kilogram <br /> RSL=Regional Screening Level <br /> RWQCB=Regional Water Quality Control Board <br /> SAIC-Benham=The Benham Companies,LLC,an SAIC Company <br /> TPHc=Total petroleum hydrocarbons quantified as crude oil <br /> <=Denotes analyte not detected at or above the laboratory reporting limit <br /> --Not available <br /> Notes: <br /> 1. Samples were collected by SAIL-Benham and analyzed by Lancaster Laboratories,Inc.for TPHc using <br /> EPA Method 8015B modified(CIO-C36)and BTEX using EPA Method 8260B. <br /> 2. Results in bold exceed RSLs and/or ESLs. <br /> 3. See Appendix F for data validation results. <br /> 4. Risk-based screening level for protection of groundwater. <br /> 5. MCL-based screening level for protection of groundwater. <br /> 6. ESL Direct Exposure(Human Health) <br /> 7. ESL"Leaching to Groundwater"concentration in soil for the protection of groundwater(drinking water source), <br /> based on concentration modeled to leach to groundwater at or above the health-based screening level. <br /> 8. ESL"Leaching to Groundwater"concentration in soil for the protection of groundwater(drinking water source), <br /> based on ceiling value. <br /> Sources: <br /> RSLs from EPA Regional Screening Levels(RSL)for Chemical Contaminants at Superfund Sites ,September 2008. <br /> ESLs from the San Francisco Bay RWQCB Screening for Environmental Concerns at Sites with Contaminated Soil and <br /> Groundwater (Interim Final),May 2008. <br /> =A_� The Benham Companies LLC <br /> A Wholly Owned Subsidiary <br /> Page 1 of I from svenco to soluhons <br />