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SECOR www secorcom <br /> INTERNATIONAL 3017 Kilgore Road Suite 100 <br /> (� ® INCORPORATED Rancho Cordova CA 95670 <br /> 916-8610400 TEL <br /> 916-8610430 FAx <br /> October 17, 2003 secelm <br /> � 0 2003 <br /> Mr Mike Infurna '3 c� <br /> San Joaquin County Environmental Health Department EN�IRU*MEN1 N�ALTH <br /> 304 East Weber Avenue, Third Floor �ERM`�1SER��CES <br /> Stockton, California 95202 <br /> RE Quarterly Summary Report-Third Quarter 2003 <br /> SECOR Project No 77CP 64409 02 0001 <br /> Dear Mr Infurna <br /> On behalf of ConocoPhillips, SECOR International Incorporated is forwarding the quarterly summary <br /> report for the following location <br /> Service Station Location <br /> I <br /> Former 76 Station #4409 1502 N EI Dorado Street, Stockton, CA <br /> Shallow and deep zone groundwater contour maps and a groundwater chemical concentration map <br /> are included as Figures 1, 2, and 3 Gettler-Ryan Inc (GRI), third quarter groundwater monitoring <br /> report Is included as Attachment A Certified laboratory analytical reports, chain-of-custody <br /> . documentation, and field data sheets for the Arco station, located at 16 East Harding Way, are <br /> included as Attachment B <br /> If you have questions or comments regarding this quarterly summary report, please do not hesitate <br /> to contact me at (916) 861-0400 <br /> OQPOFESS11r) <br /> Sincerely, <br /> SECOR International Incorporated <br /> NO C 058399 <br /> J # Exp I Z•S! Of. <br /> Rusty E Benkosk VE <br /> sj CML �P <br /> Senior Engineer q�QFCAL�F��� <br /> RBlsh <br /> Figures Figure 1 -Groundwater Elevation Contour Map-Shallow Water Bearing Zone <br /> Figure 2 - Groundwater Elevation Contour Map-Deep Water Bearing Zone <br /> Figure 3-Groundwater Concentration Map <br /> Attachments Attachment A-Gettler-Ryan Third Quarter Groundwater Monitoring and Sampling <br /> Report <br /> Attachment B-Arco Third Quarter Certified Analytical Laboratory Reports, Chain- <br /> of-Custody Documentation, and Field Data Sheets <br /> cc Mr Ed Ralston, ConocoPhillips <br /> Mr James Barton, RWQCB-Central Valley Region <br /> I\con ocoPhi 11 ips\Tosco Marketing144091Qssrs13Q2003_QSR doc s <br />