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Wright Iftw <br /> Environmental <br /> March 17,2004 Services, Inc. <br /> Construction • Engineering ♦ Remediation 04 MAR 23 AM H: 59 <br /> Ms. Victoria McCartney, R.E.H.S. <br /> San Joaquin County <br /> Public Health Services <br /> Environmental Health Department <br /> 304 E. Webber Ave., Third floor <br /> Stockton, CA 95202 <br /> Re: Work Plan for Limited Immediate Corrective Action at Ace Tomato <br /> Facility Located at 2771 E. French Camp Road in Manteca, California. <br /> Dear Ms. McCartney, <br /> Wright Environmental Services, Inc. (Wright) has prepared this work plan for <br /> review by the San Joaquin County Environmental Health Department (EHD) to <br /> approve this work to remove contaminated soil discovered during the course of <br /> an upgrade to Underground Fuel Tanks at the Ace Tomato site. This proposed <br /> work plan is provided as a formality following conversations between EHD and <br /> Wright staff. Wright submits this request on behalf of Ace Tomato (responsible <br /> party) for the above referenced site. <br /> Summary <br /> Methyl tert-butyl ether (MTBE) and tert-Butanol were detected in soil beneath the <br /> Regular Unleaded Fill Bucket at levels of 2,100 ppb and 14,500 ppb respectively, <br /> and in the soil beneath the Regular Unleaded Dispenser at levels of 54 ppb of <br /> MTBE only. Gasoline and BTEX were detected in stockpile samples but were not <br /> detected beneath the Regular Unleaded Fill Bucket oaf' Dispenser. No detectable <br /> levels were found beneath the Diesel Fill Bucket or the Diesel Dispenser. Based <br /> upon observations during fueling system upgrades, Wright attributes this residual <br /> MTBE and tert-Butanol located in vadose soils of the tank pit to have occurred <br /> as the result of minimal leakage from the previously existing fill bucket and <br /> dispenser piping. <br /> Wright concludes that limited hand excavation of accessible contaminated soils <br /> from around the Regular Unleaded Dispenser and Fill Bucket area continues to <br /> be the most cost effective and feasible corrective action since these areas are <br /> now exposed and void of pavement materials. Wright further concludes that <br /> additional assessment work may be required after the completion of this <br /> corrective action work. <br /> `]p e�- • Tracy,CA 95376 <br /> 209.833.0758 • Fax 209.832.5152 <br /> wright@inreach.com Lic. #651501 A-B HazMat, C21 Page 1 <br /> websit hitp://wrightenvironmentalservices.com <br />