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�,G� <br /> CLEARWI�JERjr <br />• G R O U P <br /> Environmental Services ��- (� <br /> May 31, 2006 [fll L CC <br /> ' ' <br /> Ms Lon Duncan J UN 5 Z006 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division ENVIROI'.',mE%, HEALTH <br /> 304 East Weber Avenue, Third Floor PERMIT/SERVICES <br /> Stockton, CA 95202 <br /> Re: First Quarter 2006 Groundwater Monitoring <br /> and iSOC Remediation Activity Report <br /> Barnes Trucking Facility <br /> 1817 South Fresno Avenue, Stockton, California <br /> San Joaquin County Site Code No 2506 <br /> Clearwater Project No ZB 178I <br /> Dear Ms Duncan <br /> This letter report, prepared by Clearwater Group (Clearwater) on behalf of Barnes Trucking and <br /> Mr Floyd Barnes, presents the results of the First Quarter 2006 groundwater monitoring efforts <br /> performed on March 7, 2006 and 1SOCTM system operation and maintenance activities performed <br /> on January 10th, February 7th, and March 8, 2006 at 1817 South Fresno Avenue, Stockton, San <br /> Joaquin County, California (Figure 1) Site specific investigation history is provided as <br /> Attachment A <br /> Objectives <br /> In continuance of quarterly groundwater monitoring activities, the objectives of this current <br /> sampling and monitoring event were two-fold first, to determine the concentration and <br /> distribution of hydrocarbon contamination in groundwater at the site utilizing a monitoring well <br /> network comprised of 8 groundwater monitoring wells and secondly, to monitor the performance <br /> of the ISOCTM treatment system utilizing the 12 remediation system wells (Figure 2) <br /> 229 Tewksbury Avenue ♦ Point Richmond,California 94801 ♦ Telephone 510-307-9943 ♦ Fax 510-232-2823 <br />