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TABLE 3 <br /> SUMMARY OF SOIL ANALYTICAL RESULTS(PAHs) 1'2'3 <br /> MOUNTAIN HOUSE DEVELOPMENT SITE#6 <br /> Mountain House,San Joaquin County,California <br /> Concentrations in mg/kg <br /> v ° <br /> v <br /> a �d y�v <br /> 4.1 <br /> C r N v y <br /> Sample <br /> Depth Date <br /> Boring ID (feet bgs) Sampled <br /> SCREENING PRG 29 a --- 590 a 0.08 4 0.062 5 0.2 a --- 0.38 s 0.062 5 210 4 0.62 5 210 a <br /> LEVELS db, ESL min 16 6 13 7 28 0.38 $ 0.038 1 0.38 s 0.38 $ 0.062 8 60 6 0.62 $ 85 9 <br /> SB-25 5 3/31/2008 <0.00067 <0.00033 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> 15 3/31/2008 <0.00067 <0.00033 <0.00033 <0.00067 0.00070 J <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> SB-26 5 3/31/2008 <0.00067 <0.00033 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> 13.5 3/31/2008 <0.00067 <0.00033 <0.00033 <0.00067 0.00090 J <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> 5 4/1/2008 <0.00067 <0.00033 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> SB-27 9.5 4/1/2008 <0.00067 <0.00033 <0.00033 <0.00067 0.00072 J <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> 21 4/1/2008 <0.00067 <0.00033 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> SB-28 5 4/1/2008 <0.00067 <0.00033 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> 9 1 4/1/2008 <0.00067 <0.00033 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> SB-29 5 4/1/2008 <0.00067 <0.00033 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> 9 4/1/2008 <0.00067 <0.00033 <0.00033 1 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00033 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <0.00067 <br /> Abbreviations: Notes: <br /> <=Denotes analyte not detected at or above the laboratory reporting limit. 1. Samples were collected by SAIC and analyzed by Lancaster Laboratories,Inc.for PAHs using EPA Method 8270C with SIM. <br /> bgs=Below ground surface 2. See Appendix E.1 for data usability summary. <br /> E=Estimated value based on surrogate recovery levels. 3. Results in bold exceed PRGs and/or ESLs. <br /> EPA=U.S.Environmental Protection Agency 4. PRG in soil for the protection of groundwater(dilution attenuation factor of 1,assuming no dilution or attenuation of constituent concentrations in the subsurface). <br /> ESL=Environmental Screening Level 5. PRG in soil for human health protection,based on direct contact exposure pathways(ingestion,dermal contact,and inhalation). <br /> ID=Identification 6. ESL Gross Contamination Ceiling Value(odors,etc). <br /> J=Estimated concentration detected between MDL and LOQ. 7. ESL"Leaching to Groundwater"concentration in soil for the protection of a current or potential drinking water resource,based on concentration modeled to leach to groundwater at or above the <br /> LOQ=Limit of Quantitation health-based screening level. <br /> MDL=Method Detection Limit 8. ESL in soil for human health protection,based on direct contact exposure pathways(ingestion,dermal contact,and inhalation). <br /> mg/kg=Milligrams per kilogram 9. ESL in soil based on Aquatic Habitat Goal. <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PRG=Preliminary Remediation Goal <br /> RWQCB=Regional Water Quality Control Board Sources: <br /> SAIC=Science Applications International Corporation PRGs from EPA'Region 9 PRGs Table"(October 2004). <br /> SIM=Selective ion monitoring ESLs from the San Francisco Bay RWQCBScreening for Environmental Concerns at Sites with Contaminated Soil and Groundwater (Interim Final November 2007[Revised May 2008]). <br /> Z <br /> ..AW-1w <br /> From science to solulmns <br /> Page 3 of 3 <br />