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21 October 2013 <br /> AGE Project No. 13-2675 <br /> Page 2 of 5 <br /> Borings will be advanced using a PowerProbe direct-push drill rig. Soil samples will be <br /> collected at five-foot intervals, beginning at five feet bsg from the proposed soil borings for <br /> collection of soil and groundwater samples. Soil samples will not be collected from the <br /> proposed soil-vapor borings. According to recent information available on the State of <br /> California Geotracker website, groundwater at the site likely occurs between 30 to 35 feet <br /> bsg. <br /> Soil, groundwater, and soil-vapor samples will be submitted to a California Department of <br /> Public Health (CDPH)-Certified laboratory and selected soil and groundwater samples will <br /> be analyzed for: <br /> • Total petroleum hydrocarbons (TPH) in accordance with EPA-method 8015- <br /> modified; and <br /> • Volatile organic compounds (VOCs) in accordance with EPA-method 82608. <br /> Selected soil-vapor samples will be analyzed for VOCs in accordance with EPA-method <br /> 8260B. <br /> Upon completion of the field work and receipt of laboratory analysis, a brief report will be <br /> prepared. The report will be reviewed and signed by a California Professional Geologist. <br /> PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable drilling permits will be obtained from the San Joaquin County Environmental <br /> Health Department(EHD)and a site-specific Health and Safety Plan will be prepared. Prior <br /> to mobilization, each soil boring location will be clearly marked and a utility clearance <br /> obtained through Underground Service Alert.The EHD will be contacted a minimum of five <br /> days prior to conducting investigation activities to arrange for inspection. <br /> FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative working under the <br /> supervision of a California Professional Geologist. Procedures for sample collection and <br /> analysis, equipment decontamination and sample handling are presented below. <br /> Advanced GeoEnviron mental,Inc. <br />