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06/63/1999 09 51 7078382323 GALLARDO AND ASSOC PAGE 11 <br /> Limited Soil and Groundwater Report-05/24/99 Page 7 <br /> � western;pti&Spreadmg Sito Pro ect No 024.98 <br /> 4.0 SCOPE OF WORK <br /> p <br /> This report represents <br /> the work erfomed on March 23 and 24, 1999 by Gallarado&Associates. <br /> As proposed in Galfardo&AssoctatM Workplan for a Limited Soil and Groundwater Investigation <br /> dated December 22, 1998, the following actions were taken <br /> • Five exploratory soil borinp were advanced to an average depth of approximately 40 feet bgs <br /> Iat the proposed boring locations <br /> • 39 soil saniples were collected;however,20 were selected and analyzed for MTBE, TPH-d, <br /> TPH-k, TPH-g,and BTEX <br /> 0 The soil cutttxigs were stored on and covered with six-mil vrsquene and left on-site pending <br /> disposal by the cherd Mr Jeff Hopkt ns. <br /> • All groundwater "grab" samples were analyzed for TPH-d, TPH-g, and BTEX by EPA <br /> Method 8015/8020,and the fuel oxygenates MTBE,DIPS, ETBlE, TAME, and TBA by <br /> EPA Method 8260. <br /> ' + The conchzions and reeonunendations contained in this report were prepared by Gallardo <br /> &Associates and are based on the field mvestigatiOn and laboratory data obtained during the <br /> drilling and sampling of soil borvmgs B-1 through B-5, as well as data collected from the UST <br /> removal in 1987 <br /> ' 5.0 SOIL BORINGS <br /> In March 1999,Gallardo &Aswciates applied for and obtained a drillmg permxt from San Joaqum <br /> County Environmental Health Division(No 018672)to advwce up to six exploratory soil bormgs <br /> ' at the site On March 23 and 24, 1999, Galfardo &AssacWes drdled five, 40-foot below grade <br /> surface(bgs)exploratory soil borings at the mvwdgation,site(boxmgs B-1 through B-5) The boring <br /> ' were drilled by Bay Area Exploration,Inc of Cordelia,CA, a Lwznsed C-57 dnllmg contractor using <br /> a CME ?5 dig rig equipped wrth continuous-flight, six-inch diameter augers to advanced the <br /> exploratory sod.borings <br /> ' Soil boxings B-2 through B-5 were sampled at approximately five-Foot intervals using a 2 1/4-inch <br /> 0 D split-spoon sampler cont ming three two-itch dsaxioeter brass tubes,while soil boring B-1 was <br /> I sampled using a five-foot long, three-inch 0 D spht-spoon sampler containing no brass liners <br /> (continuous core). Soil borings B-1 through B-5 were backfilled to grade with a cement-bentonite <br /> mix(See attached Soil Boring Logs in Appendix:A). <br /> I ' <br /> I <br />