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4.0 CONCLUSIONS AND RECOMMENDATIONS <br /> The objective of this Phase II ESA was to evaluate the shallow soil and groundwater at the <br /> Site for the presence of contamination associated with the use of the Site as a dry cleaner. <br /> Nova completed two (2) exterior Geoprobe® soil test borings (labeled SB-1 and SB-2) and <br /> two (2) interior hand auger soil borings (labeled SB-3 and SB-4) at the Site on March 28, <br /> 2013. <br /> In general, the soil encountered at the Site consisted of horizontally non-continuous units <br /> of clay, silty clay, sandy clay, clayey sand, silty sand, and sand up to the termination of the <br /> borings (up to 30 feet bg). Groundwater was encountered from approximately 20 to 21 <br /> feet bg. Bedrock was not encountered at the test boring locations. <br /> Field screening of the soil samples collected from the test borings did not detect elevated <br /> concentrations of organic vapors when screened with a PID. <br /> Chemical analysis of the soil samples collected from the test borings SB-1 and SB-2 <br /> indicated that VOC concentrations were below the laboratory. Chemical analysis of the soil <br /> samples collected from the test borings were below the California EPA RSLs. <br /> Chemical analysis of the groundwater samples collected from the temporary monitoring <br /> wells at SB-1 and SB-2 indicated that VOC concentrations were below the laboratory <br /> method detection limits. <br /> Based on the findings of this Phase II Subsurface Investigation, no additional investigation <br /> appears warranted. <br /> RALEY'S STOCKTON NOVA PROJECT NO.B13-0472 <br /> PAGE 6 APRIL 9,2013 <br />