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C hvv tern <br /> After development of these. wclk, Clayton collected water samples The analyt!L It <br /> results of these ,amples are: summarized in I able 2 be,ow <br /> Table 2 <br /> Monitonng Well Water Samples Analytical Results <br /> EPA MW-1 MW-2 MW-.5 Detmion fir <br /> Method conatituef%Ea AWL is8L AWL IAWL <br /> 5030/02 iienzene ND• ND ND 04 <br /> Toluene ND ND ND 03 <br /> 'CyiLDLS ND ND 03 0 4 <br /> Dhylbenzene ND ND 30 01 <br /> 8015 rPli as NO ND 130 50 <br /> Gasoline <br /> Gob Or�jnochionne ND ND ND Variable <br /> PWICLOes aid <br /> PCAs <br /> 4181 Oil and Grease <l <1 <1 1 <br /> 'ND = Not detected <br /> • <br /> As Tables i and 2 show, contamination was confined to the soil in MW-3 This <br /> monitoring well was downgradlent from the location of the removed underground <br /> gasoline tank. <br /> Based on the analysis at the soil anu water samples from the monitoring wells, <br /> Clayton recommended excavation and aeration of the gasoline-contaminatert soil <br /> in the vicinity of tse former location of the gasoline tank <br /> 30 PERMITTING AND REGLILATORY LIAISON <br /> Betore soil exca-tation commenced, Clayton. <br /> • Obtatned a soil deration permit from the Air Pollution Control District <br /> (APCD) in Sacramento on June S, 1990 <br /> • Submitted a work plan for excavation ana aeration of the gasoline- <br /> contaminated soil to the San Joaquin County Public Health Services, <br /> Environmental Health Division (PHSIEHD) on June 12, 1990 <br /> • Obtained a permit from PHS/EHD to remove the 500-gallon septic, tank onsite <br /> on August 10, 1990 The PHS/EHD had been assigned oversight of the <br /> assessment and remediation activities at the subject site on July 13, 1990, <br /> '-v5314)4 RFP <br />