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k" KLEINFELDER <br /> SOH, ASSESSMENT WORK PLAN <br /> JOE BRYSON HEATING <br /> 907 SOUTH WH,SON WAY <br /> STOCKTON, CALIFORNIA <br /> 24-220222-A00 <br /> December 23, 1992 D E C 2 8 1992 <br /> INTRODUCTION y w �-NTAL HEALTH <br /> PttiMIT/SERVICES <br /> The site is located at 907 South Wilson Way in Stockton, California. In 1991, two <br /> underground gasoline storage tanks were removed from a common excavation at the facility. <br /> Due to allegations regarding the integrity of the tank removal contractor and the lack of <br /> adequate notification to SJCEHD of the removal, the results of the verification samples were <br /> not accepted by SJCEHD. To consider site closure, SJCEHD is requiring additional <br /> verification sampling. SJCEHD requested a single boring be advanced through the backfilled <br /> excavation. <br /> Kleinfelder has been retained by Joe Bryson Heating and Air Conditioning to implement the <br /> scope of work requested by SJCEHD. <br /> SCOPE OF SERVICES <br /> Task 1 - Drilling and Sampling of One Boring <br /> One boring will be drilled near the center of the previous excavation. The boring will be <br /> drilled to a depth of approximately 35 feet. Kleinfelder assumes that the original excavation <br /> depth was less than 35 feet. Kleinfelder assumes that the original excavation depth was less <br /> than 35 feet. The soil boring will be advanced using a truck-mounted drill rig equipped with <br /> 6-inch hollow stem augers. The boring will be drilled, logged, and sampled following the <br /> protocol described in Attachment A, Sections A-2.1 through A-2.4, and closed as described in <br /> Section A-2.7. <br /> Task 2 - Laboratory Analysis <br /> Two soil samples from the boring will be selected for laboratory analysis. The samples will be <br /> selected based on field observations, qualitative screening results, and the objectives of the <br /> assessment. Both soil samples will be submitted to a laboratory certified by the State of <br /> California Department of Toxic Substances Control (DTSC) for the proposed analyses. The <br /> samples will be analyzed for: <br /> ► Purgeable total petroleum hydrocarbons (EPA Method 8015M/5030) <br /> ► Benzene, toluene, ethylbenzene and xylenes (BTEX) (EPA Method 8020) <br /> ► Total lead (EPA Method 7420) <br /> ► Ethylene dibromide (EDB) (EPA Method 8010) <br /> FWP2-92-26 Page 1 of 3 24-220222-A00 <br /> Copyright 1992 Kleinfelder, Inc. <br />