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AdvancedGeo <br />Environmental <br />Ogg <br />25 April 2017 <br />AGE-NC Project No. 97-0301 <br />Page 2 of 6 <br />2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES <br />Applicable drilling and site assessment permits will be submitted to the San Joaquin <br />County Environmental Health Department (EHD). As required by EHD permitting, a health <br />and safety plan will be prepared in accordance with Occupational Safety and Health <br />Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational <br />Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection <br />Agency, 1985). Prior to drilling activities, each proposed drilling location will be clearly <br />marked and a utility clearance obtained through Underground Service Alert. <br />2.2. DRILLING AND SAMPLING <br />AGE proposes to drill two shallow, soil borings (SV-1 and SV-2) at the site as part of a <br />soil-vapor investigation and to evaluate potential shallow soil impact and soil vapor <br />intrusion. Proposed soil boring locations are illustrated on Figure 2. <br />Based upon laboratory results of soil samples collected during the investigation, AGE <br />proposes the soil boring locations in the following areas: <br />Soil boring SV-1 will be located adjacent the northeast edge of the former UST <br />area, approximately 10-15 feet southeast of well VW-2. <br />Soil boring SV-2 will be located adjacent the south side of the former UST area, <br />approximately 10-15 feet south of well DPE-2. <br />Soil and soil-vapor samples will be collected from borings SV-1 and SV-2 at depths of <br />approximately 5 feet (soil) and 6 feet (soil-vapor) below surface grade (bsg). Field <br />procedures for advancement of soil borings, collection of soil sample, installation of soil- <br />vapor sampling points and collection of soil and soil-vapor samples are presented in <br />Section 3.2. <br />Soil samples will be analyzed by a State of California Department of Public Health <br />Services (CDPH)-certified laboratory for the following constituents: <br />Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and <br />TPH-d, respectively) in accordance with EPA Method 8015M; and <br />Volatile aromatic compounds (VOCs) including benzene, toluene, ethylbenzene, <br />and total xylenes (BTEX), naphthalene, fuel oxygenated compounds (MTBE, <br />DIPE, TAME, ETBE, TBA), 1,2-dichloroethane (1,2-DCA) and ethylene dibromide <br />(EDB) in accordance with EPA Method 8260B. <br />Soil-vapor samples will be analyzed by a State of California Department of Public Health <br />Services (CDPH)-certified laboratory for the following constituents: