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SECOR <br /> International Incor porated <br /> March 9, 1999 <br /> Project 7G600-022-01 <br /> Ms. Lori Duncan <br /> San Joaquin County Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Re. Request for-Onsite-Re=use:bf-Pea Gravel <br /> ARCO Service Station#4493 <br /> 205 North Center Street <br /> Stockton, California <br /> Dear Ms. Duncan: <br /> SECOR International Incorporated (SECOR"), on bhalf of ARCO Products Company <br /> (ARCO), requests approval to re-use the pea gravel excavated from the underground <br /> storage tank(UST).complex at the'subject site as backfill for-tbe resulting excavation <br /> (Figure.-O-.' Approximately 200 cubic yards of pea gravel were excavated from above the <br /> armer:USTsprior to,removal. This material is c ently stockpiled onsite. Analytical <br /> results reported concentrations of total petroleum hydrocarbons calculated as gasoline <br /> (TP14-g) from riondetect to 5.08 milligrams per kilogram (mg/kg) and benzene from <br /> nondetect to 0.0226 mg/kg (see attached Table 2). No detectable concentrations of <br /> methyl tertiary-butyl ether(MtBE) or other oxygenates were reported. Pending your <br /> approval, re-use of the pea gravel will commence en Wednesday. March 10, 1999; <br /> coinciding with planned over-excavation activities in the area of theformer pump islands <br /> scheduled for the same day. <br /> If you have any questions regarding this request, please do not hesitate to call us at <br /> (916) 364-1880. <br /> Sincerely, <br /> SECOR International Incorporated <br /> 17: <br /> #k y�P.�E <br /> us E B!e� <br /> 1 rpject Engineer <br /> e2- Analytical Data' Sto c p <br /> Attachments: ; Tabl k ifedPca- ravel <br /> Figure I = Site Plan <br /> cc: Mr. Mark List, RWQCB - Central Valley Re ion <br /> Mr. Paul Supple, ARCO Products Company <br /> 9912 Business Park Drive, Suite 100, Sacramento', CA 95827 (916)361-1880(916)364-1889 FAX uww.secorcom <br />