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p� <br /> ep6mwk <br /> ` c r I a C1i vision of <br /> rib*,*SOLUTIONS �mcon <br /> December 4, 1998 <br /> Project 20805-114 09 <br /> Mr Paul Supple <br /> ARCO Products Company <br /> P O Box 6549 <br /> Moraga, California 94570 <br /> Re Quarterly Groundwater Monitoring Report, Third Quarter 1998, for ARCO Service Station <br /> No 2130, Located at 7906 North El Dorado Street, Stockton, California <br /> Dear Mr Supple <br /> Pinnacle Environmental Solutions, a division of EMCON (Pinnacle), is submitting the attached <br /> report which presents the results of the third quarter 1998 groundwater monitoring and sampling <br /> program at ARCO Products Company (ARCO) Service Station No 2130, located at 7906 North <br /> b El Dorado Street, Stockton, California In addition, operation and performance details of the <br /> remediation system are presented The quarterly monitoring program is in compliance with the <br /> San Joaquin County Public Health Services requirements regarding underground storage tank <br /> investigations The performance of the remediation system is in compliance with the San Joaquin <br /> Valley Unified Air Pollution Control District (SJVUAPCD) permit requirements <br /> LIMITATIONS <br /> No monitoring event is thorough enough to describe all geologic and hydrogeologic conditions <br /> of interest at a given site If conditions have not been identified during the monitoring event, <br /> such a finding should not, therefore, be construed as a guarantee of the absence of such <br /> conditions at the site, but rather as the result of the scope, limitations, and cost of work <br /> performed during the monitoring event <br /> Please call if you have questions <br /> Sincerely, <br /> Pinnacle <br /> l <br /> Matt Turner ygn, RProject Manager Se or <br /> CRD IQMRI3RDQTR--112130Q398 DOC 98ft 1 <br /> 3939 Cambridge Road Suite 220 Cameron Park California 95682 (530)676 6884 (530)676 6865 Fax <br />