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0 0 <br /> Wright <br /> Environmental <br /> 2395 East Pescadero Avenue <br /> TracServices, Inc. 209-833-0758 0Fax 209-832-5152 <br /> September 9,2008 <br /> SEP 1 0 2008 <br /> San Joaquin County, Environmental Health Department ENVIRONMENT HEALTH <br /> Site Mitigation, Unit IV PERMIT/SERVICES <br /> 600 East Main Street <br /> Stockton, CA 95202 <br /> ATTN: Ms.Margaret Lagorio <br /> Re: Contingency Plan-Soil Excavation <br /> 8650 Almendra Way,Tracy,CA 95376 <br /> zyg-tlo-zy <br /> Dear Ms. Lagorio, <br /> Wright Environmental Services, Inc. (Wright) has prepared this Contingency Plan to excavate <br /> soil that may be contaminated with petroleum hydrocarbons (motor vehicle fuels) for the above <br /> referenced site where two(2)underground storage tanks approximately 1000-gallons each will be <br /> removed under oversight of the UST Unit, permit No. SR 0055267.. <br /> Summary <br /> The site has several constraining objects in the vicinity of recently discovered underground <br /> storage tanks (UST) located near the western property line below a 10 X 10 wooden shed (fuel <br /> shed). Portland Cement Concrete (PCC) slabs surround three sides of shed; and to the east, <br /> Asphalt Concrete (AC) forms the paved area leading to a dwelling with a three car garage. The <br /> west ends of both USTs are suspected to be within 5 to 10-feet of the western property line that is <br /> distinguished by an 8-foot tall wooden fence. The fuel shed will be demolished prior to UST <br /> closure. Concrete underlying the shed will be removed to access soil surrounding the UST's. <br /> In the event contamination is observed or suspected as a result of either UST system present; <br /> Wright and owner propose to excavate additional soil surrounding and below the UST's to <br /> remove contaminated soil in a limited area. This contingency plan is an enhancement to the <br /> standard UST removal operation identified in the "Application For Underground Storage Tank <br /> Closure Permit" (Closure Permit) and is intended to be implemented during UST closure <br /> activities and therefore is limited in its scope and not intended to initiate assessment or remedial <br /> activities. However, should the limited over excavation work proposed and the subsequent soil <br /> and or groundwater sampling(if present)of the area excavated indicated no detectable petroleum <br /> hydrocarbons present, then Wright and Owner would submit all field data in the UST Closure <br /> Report and request EHD to conclude that no further assessment or remedial action(s) be required <br /> for the property. <br />