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t . <br /> C A 1111 B R I A - - <br /> ✓_ -PF Bl <br /> 2 3 4 5 6 <br /> '— — Apnl 26, 2401 <br /> Mr Harlm Knoll <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Site Investigation Work Plan <br /> Sbell-branded Service Station <br /> 3725 Tracy Boulevard <br /> Tracy, California <br /> SAP Code 136186 <br /> Incident No 98996222 <br /> SJCPHS/EHD Site Code 1417 <br /> Dear Mr Knoll <br /> Cambria Environmental Technology, Inc (Cambria) prepared this work plan on behalf of <br /> Equiva Services LLC (Equiva) in response to San Joaquin County Public Health Services, <br /> Environmental Health Division's (SJCPHS/EHD) March 15, 2001 letter The scope of work <br /> presented in this work plan is written to comply with SJCPHS/EHD and Regional Water <br /> Quality Control Board (RWQCB) guidelines <br /> SITE BACKGROUND <br /> Site Description The subject site is located on the northwest corner of the intersection of <br /> Tracy Boulevard and the west bound onramp to Interstate Highway 5 in Tracy, California <br /> The site is an operating Shell-branded service station with four underground gasoline storage <br /> tanks, six dispenser islands, a station building, and a car-wash (Figure 2) The site was <br /> developed as a service station in 1967 when an 8,000 gallon underground storage tanks (UST) <br /> and a 10,000 gallon UST were installed at the site In 1970 an 8,000 gallon UST was <br /> installed for a total of three US"iT's at the site <br /> An operating Chevron service station is located north of the subject site The Chevron <br /> station is an open environmental case and has monitoring wells on site (Figure 2) A former <br /> a k I a n d, CA Unocal service station was located northeast of the subject site and is not an active <br /> an Ramon, CA <br /> onama, CA environmental case <br /> fimbria Previous Investigations <br /> whom tnw <br /> dmology,hx- <br /> During October 1985, J H Kleinfelder & Associates drilled four soil borings in the vicinity of <br /> 7P meet the USTs Petroleum hydrocarbons (presumed to be gasoline related) were detected with a <br /> I Boz 259 <br /> ioma,CA 95476 <br /> (707)935-4650 <br /> (707)935-6649 <br />