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29 August 2017 AdvancedGeo <br /> AGE Project No. 95-0121 Environmental <br /> Page 2 of 5 <br /> • Quarterly groundwater sampling and analysis; and <br /> • Preparation of a report of findings. <br /> 2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable site assessment/well installation drilling permits will be obtained from the San <br /> Joaquin County Environmental Health Department (EHD). In addition, an update to the <br /> health and safety plan presently on-file will be prepared in accordance with Occupational <br /> Safety and Health Guidance Manual for Hazardous Waste Site Activities (National <br /> Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. <br /> Environmental Protection Agency, 1985). Prior to mobilization, each proposed boring/well <br /> locations will be clearly marked and a utility clearance obtained through Underground <br /> Service Alert. <br /> 2.2. DRILLING AND SAMPLE ANALYSIS <br /> AGE proposes to advance two off-site soil borings to depths of approximately 55 feet bsg <br /> for the purpose of logging Iithology and for installation of intermediate groundwater <br /> monitoring wells. Soil samples will only be collected for the purpose of logging Iithology. <br /> Soil borings will be advanced using a truck-mounted drill rig equipped with 8.25-inch <br /> hollow-stem augers. The total depth of each well boring may vary according to <br /> geologic/hydrogeologic conditions encountered during drilling. Relative to the property <br /> boundary line, locations of the off-site groundwater monitoring wells are as follows.. <br /> • One groundwater monitoring well (MW-16) will be located approximately 5-10 feet <br /> from previously proposed soil boring B-23, in the southeast corner of the 1145 <br /> West Charter Way property to evaluate Second Water Zone impact west of the <br /> NCC site and <br /> • One groundwater monitoring well (MW-17) will be located approximately 5-10 feet <br /> from previously proposed soil boring B-24, in the east section of the 1145 West <br /> Charter Way property to evaluate Second Water Zone impact west of the NCC <br /> site. <br /> The proposed monitoring well locations are illustrated in Figure 2. <br /> 2.3. MONITORING WELL INSTALLATION, DEVELOPMENT, AND SURVEY <br /> Each soil boring will be single-completed as a shallow groundwater monitoring wells <br /> (-55 feet bsg). The proposed monitoring wells will be screened at depths of approximately <br /> 35 feet to 55 feet bsg. Depth of the screened interval may vary according to hydrogeologic <br /> conditions encountered while drilling. <br />