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ti <br /> 20 July 2000 <br /> AGE Project No. 98-0456 <br /> Page 5 of 7 <br /> Environmental Health Division(PHS-EHD),Department of Water Resources(DWR). A well survey <br /> was performed to identify city, domestic, irrigation or monitoring water wells located within a 2,000- <br /> foot radius of the subject site. The area was visually inspected for wells. <br /> 4.0. FINDINGS <br /> Soil descriptions were utilized to construct the site geological model; laboratory analysis of soil. <br /> .r samples were utilized to assess the hydrocarbon-impact on soil and ground water. <br /> 4.1 SOIL PROFILE <br /> ;,. A black, moist silt was encountered at 5 feet bsg. Generally, a light brown to orange, dry, silty sand <br /> was encountered at 15 feet bsg and 20 feet bsg. Moist silt or silty clay was generally encountered at <br /> 25 feet to 30 feet bsg. Locally, fine sand was encountered at 30 feet bsg. Boring logs are included <br /> in Appendix A. <br /> '-' 4.2 FIELD EVIDENCE OF HYDROCARBON-IlVIPACTED SOIL AND GROUND WATER <br /> Petroleum hydrocarbon odor and organic vapor were not observed or detected in any of the soil <br /> samples collected from B-2 through B-4 and AB-1. Soil from B-1 had hydrocarbon odor at depths <br /> of 5 feet and 10 feet bsg. <br /> 4.3 ANALYTICAL RESULTS OF SOIL SAMPLES <br /> Sixteen soil samples were submitted to DHS-certified laboratories(McCampbell Analytical Inc.) for <br /> analysis as noted above. TPH-g, BTEX, fuel additives and PCB's were not detected in any of the soil <br /> samples analyzed. <br /> TPH-d and TPH-mo were detected in two soil sample collected from B-1. TPH-d was detected in <br /> .� soil samples B-1-5 and B-1-10 at concentrations of 100 milligram per kilogram (mg/kg) and 420 <br /> mg/kg, respectively. Analytical results for the two soil samples noted that probable motor oil range <br /> compounds were significant in these results. <br /> TPH-mo was detected in soil samples B-1-5 and B-1-10 at concentrations of 350 mg/kg and 3,100 <br /> mg/kg, respectively. Approximately 109 gallons of motor oil and diesel fuel remain in the soil at <br /> the site (Appendix B). <br /> it Advanced GeOEnvirOnmental,Inc. <br /> V <br />