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� v <br /> 0 <br /> A S S O C I A T E S I N C <br /> In March 1999, Pile Construction removed one 6,000-gallon and one 4,000-gallon UST <br /> According to the Pile Construction Underground Tank Removal Sampling Results for King <br />' Island Resort, 11530 West Eight Male Road, Stockton, California, both USTs contained gasoline, <br /> but the 4,000-gallon UST previously contained diesel Four soil samples were collected from the <br /> former location of the USTs and these samples contained low concentrations of total petroleum <br /> hydrocarbons as diesel (TPHd) and methyl tertiary butyl. ether (MTBE) Three soil samples were <br /> collected from the former product line trench and these samples contained low concentrations of <br /> total petroleum hydrocarbons as gasoline (TPHg) and MTBE Pile Construction also installed <br /> Ione split aboveground storage tank (AST) containing diesel and gasoline along with the product <br /> lines from the AST location to the fuel dispensers located on the dock The former USTs, the <br />' former product lines, the current AST, and the current product lines are shown on Figure 2 <br /> 2.4 METHODS AND PROCEDURES <br /> To investigate the extent of residual soil and groundwater contamination at the site, a total of ten <br /> soil borings were advanced south and west of the former USTs and in the vicinity of the former <br /> and current underground product pipelines All field activities were performed in accordance <br /> with ATC's Workplan for Subsurface Investigation at Kang .Island Resort at 11530 West Eight <br /> Mile Road, Stockton, California, dated August 31, 1998 This workplan was approved by <br /> PHS/EHD on September 30, 1998 with minor modifications <br /> 2.1 Drilling Activities <br /> On July 22 1999 an ATC geologist supervised the advancement of five soil borings to 16 feet <br /> bgs Soil borings SB28 through SB32 were placed at the locations shown on Figure 2 On <br /> August 17, 1999, an ATC geologist supervised the advancement of five additional soil borings to <br /> 16 feet bgs Soil borings SB33 through SB37 were advanced at the locations shown on Figure 2 <br /> Fisch Environmental, California License C57 683865, advanced the borings using a truck <br /> mounted Geoprobe® narrow diameter rig employing direct push technology Soil samples were <br /> collected from borings SB28 through SB37 at five-foot intervals in acetate sampling tubes and <br />' were described according to the Unified Soil Classification System Descriptions of soil types <br /> encountered and sample collection intervals are presented on the boring logs contained in <br /> Appendix A <br /> 2.2 Soil Sampling and Analysis <br /> Each soil sample was field screened with a Flame Ionization Detector (FID) for the presence of <br /> volatile organic compounds Sample tubes were then sealed at each end using Teflon tape and <br /> plastic end caps, labeled, and placed on ice Selected soil samples were kept on ice and delivered <br />' under chain-of-custody documentation to State-certified Sequoia Analytical (ELAP #1210) or <br /> Argon Laboratories (ELAP #2358) for chemical analysis Selected soil samples were analyzed <br /> for TPHg and TPHd by EPA method 8015 modified, benzene, toluene, ethylbenzene, and <br /> xylenes (BTEX)by EPA method 8020, oxygenate fuel additives by EPA method 8260 <br /> w 1625141reportslsurmnv doc 3 <br />