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20 August 2018 <br />AdvancedGeo <br />AGE Project No. 13-2557 <br /> Environmental <br />Page 2 of 6 <br />be obtained from the appropriate property owners. If necessary, encroachment permits <br />will be obtained from the City of Tracy. In addition, a site-specific health and safety plan <br />will be prepared in accordance with Occupational Safety and Health Guidance Manual <br />for Hazardous Waste Site Activities (National Institute for Occupational Safety and Health <br />Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1985). <br />Prior to mobilization, each soil boring will be clearly marked and a utility clearance <br />obtained through Underground Service Alert. The SJCEHD will be contacted at least 48 <br />hours prior to conducting any field work. <br />2.2. MONITORING WELL INSTALLATION <br />AGE proposes to advance six (6) pilot soil borings to depths of 20 feet bsg and one (1) <br />pilot soil boring to a depth of 40 feet bsg for the installation of shallow-screened and deep- <br />screened groundwater monitoring wells. Soil borings will be advanced using a truck- <br />mounted drill rig equipped with 8.25-inch diameter hollow-stem augers. The total depth <br />of each well boring may vary according to geologic/hydrogeologic conditions encountered <br />during drilling. Locations of the proposed groundwater monitoring wells are as follows: <br />Three (3) pilot soil borings will be advanced to 20 feet bsg for installation of <br />shallow-screened wells at 3 East Eleventh Street (site) to asses and define the <br />lateral extent of petroleum hydrocarbon impact adjacent to the former UST and in <br />the presumed up- and cross-gradient location from the former UST area. <br />One (1) pilot soil boring will be advanced to 20 feet bsg for installation of a shallow- <br />screened well at 1120 North Holly Drive to assess and define the lateral extent of <br />petroleum hydrocarbon impact in the presumed down-gradient location from the <br />former UST area. <br />One (1) pilot soil boring will be advanced to 20 feet bsg for installation of a shallow- <br />screened well at 1101 North Holly Drive to assess and define the lateral extent of <br />petroleum hydrocarbon impact in the presumed cross- and down-gradient location <br />from the former UST area. <br />One (1) pilot soil boring will be advanced to 20 feet bsg for installation of a shallow- <br />screened well at 1131 North Holly Drive to assess and define the lateral extent of <br />petroleum hydrocarbon impact in the presumed down-gradient location from the <br />former UST area. <br />One (1) pilot soil boring will be advanced to 40 feet bsg for installation of a deep- <br />screened well at 3 East Eleventh Street adjacent to the former UST area to define <br />the vertical extent of petroleum hydrocarbon impact in the former UST area. <br />All proposed pilot borings/monitoring well locations are illustrated in Figure 2.