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1 . 0 INTRODUCTION <br /> This document is .intended to fulfil' all the requirements fcr a <br /> Corrective Action Plan for Chevron Station 9-8264, as requested by <br /> San Joaquin County . The service station is located at 3775 Tracy <br /> Boulevard it 'Tracy, California (Figure 1 ) . On November 7 1995 , <br /> ;.underground storage tanks tUSms ; and surf=ace facilities for ser,Ti_cc- <br /> titation oycr_'atlons were re7I!o[,pd. Further renovation [^lora is <br /> pending. <br /> The scope of work proposed in -chis York plan includes: <br /> 7. Preliminary Site Assessment: <br /> k Scil/Orcundwater Investigation <br /> Soil Excavation <br /> W E Proposal for Verification Monitoring <br /> Further corrective action measured may be necessary depending on <br /> findings from the activities proposed in this workplan. <br /> 2 . 0 SITE CONDITIONS <br /> The site is an cperating sarvice staticn awai tin q renovation. The <br /> staticn was constructed in 1972, and the original USTs (two-10 ; 300 <br /> gallon and one-6 , 000 gallon capacity for gasoline and one--1500 <br /> gallon for used oil ) were removed on November.' 7, 1995 . All UST's <br /> have tested "tight" since 1986 . Depth to groundwater has been <br /> observed at 10 feet below grade surface (bgs ) . <br /> 3 . 0 SCOPE OF WORK <br /> A combination of site: assessment and soil remediation will be <br /> performed concurrently. Soy_'_ remeilaticn will occur �r ekc."ava'�_lon <br /> as obvlou- �3re.as of hydre,�ca hon impacted so-_1 care }r.xp se:t ani! <br /> overexcav ted during construction activities. Add?tiunal ite <br /> assessment will follow construction, winh the installation of four <br /> soil borings and four mondturing wells, positioned to help <br /> determine lateral and vertical entent of any residua'_ connamir,at io., <br /> (Figure ) . f <br /> 3 . 1 UST Removal <br /> Soil in and around the former tank pit, pump islands and used oil <br /> were visually inspected for evJ_cience of hydrocarbon impact. on. <br /> November 7 , 1995 . confirmation samples were co t. _acted at <br /> excavation limits . Analytical rasults TV= all excavations will <br /> be used to supplement boring and hleli . ata regarding lateral and <br /> vertical extent of contamination. <br /> 3 . 2 UST Installation <br /> The approximate dimensions of the new UST area (Figure 2 ) are 45 <br /> i <br />