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II l <br /> � �i1 am,�j �/ELl <br /> A ` V <br /> JUL 0 7 200$" <br /> LEE & PIERCE inc- <br /> consulting engineE°s ENViRONN1ENT H�ALTN <br /> 135 SOUTH FIFTH AVENUE,SUITE C PER14'3T,SERV! ES <br /> OAKDALE, CA 95361-4092 <br /> BILL PELICH,P.E.CIVIL PHONE(209)84&8270 <br /> JOHN LANE,P.G.,R.E.A. FAX(209)848-8274 <br /> LEE MARCUM SALINAS(831)758-0096 <br /> June 30, 2008 <br /> Ms. Lori Duncan <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton, CA 95202-3029 <br /> RE: Subsurface Investigation Summary Report <br /> Gubary Liquors, 17717 E. Highway 120, Ripon, CA, Site Code 1592 <br /> Dear Ms. Duncan, <br /> L Lee & Pierce, Inc. (L&P) submits this report on behalf of Mohamed Gubary to summarize the <br /> subsurface investigation conducted at the subject site. The site location in presented on Figure 1. <br /> SITE HISTORY <br /> I <br /> The site currently houses a convenience store and a restaurant. Three underground storage tanks <br /> (USTs) were removed from the site on March 17, 1999 under permit from the San Joaquin <br /> County Environmental Health Department(SJC/EHD). <br /> I <br /> l <br /> A soil sample collected from beneath the south end of one of the USTs(TK-2 S 13')contained low <br /> levels of gasoline constituents,but no contaminants were detected in any other sample. Sample TK- <br /> 2 S 13' contained total petroleum hydrocarbons as gasoline (TPHg) at 7 milligrams per kilogram <br /> (mg/kg), toluene at 0.088 mg/kg, ethylbenzene at 0.062 mg/kg, and total xylenes at 0.561 mg/kg. <br /> No benzene was detected in the sample. A site plan showing the location of the former USTs and <br /> previous soil samples is included as Figure 2. <br /> y <br /> In subsequent letters,SJC/EHD requested additional investigation to determine whether soil and or <br /> groundwater beneath the former USTs were significantly affected. In response to the request, <br /> Geological Technics Inc. prepared a work plan to drill and sample a single soil boring adjacent to <br /> sample TK-2 S 13' to investigate the potential impact beneath the site. SJC/EHD approved the <br /> workplan in a letter dated July 30, 1999. L&P was contracted by Mr. Gubary to implement the <br /> approved workplan. <br />