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AdvancedGeo <br />Environmental <br />:Ogg <br />11 January 2019 <br />AGE Project No. 19-4606 <br />Page 2 of 6 <br />Soil boring advancement and sample collection. <br />Grab groundwater sample collection. <br />Soil boring advancement for installation of temporary soil-vapor sampling wells. <br />Soil-vapor sampling. <br />Boring abandonment. <br />Report preparation. <br />Each of these tasks is described in greater detail below. <br />2.1. PRE-FIELD WORK ACTIVITIES <br />Applicable site assessment permits will be obtained from the San Joaquin County <br />Environmental Health Department (SJCEHD). In addition, a health and safety plan will <br />be updated in accordance with Occupational Safety and Health Guidance Manual for <br />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 proposed boring location will be clearly marked, and a utility <br />clearance obtained through Underground Service Alert. <br />2.2. SOIL PROBE BORINGS AND SAMPLING <br />A total of six (6) soil borings will be advanced onsite in the areas illustrated in Figure 1. <br />Additionally, a total of four (4) shallow soil borings will be advanced adjacent to selected <br />soil boring locations for installation of temporary soil-vapor sampling wells. All borings <br />will be advanced utilizing a van-mounted direct push drilling rig or a hand auger. <br />Borings for soil and groundwater sample collection will be advanced to total depths of <br />15 feet below surface grade (bsg), or until first groundwater is encountered. Soil <br />samples will be collected at five-foot intervals from 5 to 15 feet bsg from all proposed <br />borings. <br />Based upon regional groundwater elevation data, static groundwater depth within wells <br />near the site is estimated to be approximately 10 to 15 feet bsg. <br />Soil and grab groundwater samples will be analyzed by a California Environmental Lab <br />Accreditation Program-certified (CELAP) lab for the following: <br />Total petroleum hydrocarbons quantified as gasoline, diesel and motor oil <br />(TPH-g, TPH-d and TPH-mo) in accordance EPA method 8015M.