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Mr Donald Kirk Page 3 <br />' September 22, 1997 <br /> Permitting <br />' ERM obtained a drilling permit from the San Joaquin County Public Health <br /> Services, Environmental Health Division (County) The County also required <br /> submittal of a Phase II Workplan and a Site Specific Health and Safety Plan <br />' (HASP), which ERM completed and submitted with the permit application <br />' Tank Location and Borehole Clearance. <br /> Approximate locations of the USTs were determined through Heinz employee <br /> recollection and by evidence of tank-related features such as fill or vent pipes <br /> observed during the geophysical investigation on August 28, 1997 ERM <br /> attempted to locate the exact location and orientation of the USTs using a <br />' magnetometer survey, but the USTs could not be located due to interference with <br /> the magnetometer caused by nearby metal objects ERM positioned two soil <br /> borings near each of the presumed UST locations The geophysical locator <br />' cleared all soil boring locations around the tanks and the forklift shop for <br /> utilities ERM also notified Underground Service Alert (USA) to mark all <br /> subsurface utility lines prior to drilling <br /> UST Soil and Ground Water Samplin <br />' ERM drilled two soil borings adjacent to each tank to the depth of first ground <br /> water, which was generally found at approximately 8 feet below ground surface <br />' (bgs) Within each boring, ERM collected one soil sample just above the ground <br /> water During the drilling, ERM field screened the encountered soil with an <br /> organic vapor analyzer for the potential presence of volatile organic compounds <br />' (VOCs) Following completion of the borings in the downgradient direction <br /> from the tanks, ERM collected grab ground water samples using a HydroPunch <br /> Soil and ground water samples were analyzed for total petroleum hydrocarbons <br /> i (TPH) as gasoline and diesel using EPA Method 8015, and for benzene, toluene, <br /> ethylbenzene, and xylenes (BTEX) using EPA Method 8020 <br />' Forklift Shop Soil and Ground Water Sam Iin <br />' ERM drilled three soil borings to ground water in the area of the former lube oil <br /> storage pad, south of the Forklift Shop Three additional borings were drilled in <br /> the area of the diesel tank, solvent tank, and collection sump, located north of the <br /> shop Within each boring, ERM collected one soil sample just above the ground <br /> water During the drilling, ERM field screened the encountered soil with an <br /> organic vapor analyzer for the potential presence of volatile organic compounds <br />' (VOCs) ERM collected one ground water sample from the presumed <br /> downgradient location at each of the two areas using a HydroPunch Soil and <br /> 1 <br />