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Site Contamination Work Plan <br /> Phase I Site Assessment,ABF Freight Systems,Inc <br /> 2427 West Yosemite Avenue,Manteca,California Page 2 <br /> • Section 3 PROJECT STAFFING This section identifies key personnel involved with the <br /> project, and outlines each persons specific project responsibilities <br /> • Section 4 FIELD ACTIVITIES This section provides detailed information about activities <br /> that will be performed at the excavation site during the project Specific and their individual <br /> components are discussed in detail <br /> Also included in this Project Work Plan are the following appendices <br /> • APPENDIX 1 - SITE DRA WINGS <br /> • APPENDIX 2 - SITE SAFETY AND HEALTH PLAN <br /> 2.0 SITE DESCRIPTION AND BACKGROUND <br /> The ABF Freight System, Inc site is located off Highway 120 at 2427 West Yosemite Ave in <br /> Manteca, California The site consists of a main freight terminal and office, truck parking, a <br /> former diesel fuel dispenser island, and former 10,000 gallon diesel UST site The site location <br /> and layout of the former tanks is shown on the drawings in Appendix 1 <br /> . One 10,000 gallon underground storage tank (UST) was removed by CAL INC on 3/18/98 The <br /> sampling and testing following the tank removal was completed under supervision of Mr <br /> Michael Kith of the San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) The total depth of the UST excavation was 11 feet and groundwater was <br /> encountered at approximately 10 5 feet During excavation and after the UST was removed from <br /> the excavation stained soils indicating diesel contamination was observed in the base of the <br /> excavation Soil samples collected from the excavation stockpile and groundwater sampled from <br /> the excavation confirmed diesel contamination Soil and groundwater samples included the <br /> following, <br /> • Two soil samples collected from the side walls of the excavation at the soil groundwater <br /> interface (T1-NW-10'4", T1-SE-10'4"42), <br /> • One soil sample collected from beneath the diesel dispenser (131-4'), <br /> • Two soil samples collected from the excavation stockpile (SP1-S, SPl-N), and <br /> • Two groundwater samples, one collected after the UST removal (Excavation 11') and one <br /> after purging of the excavation groundwater(Pit Water) <br /> A summary of soil and groundwater results is presented below in Tables 1 and 2 Soil and <br /> . groundwater sample locations are shown on the site map presented in Appendix 1 <br /> N 1PR0]ECTS132721P1ans and Reportslworkplan dot April 13,1998 <br />