Laserfiche WebLink
`_ <br /> CAMBRIA y Q <br /> January 15, 1998 <br /> Mr Alex Perez <br /> Shell Oil Products Company <br /> P O Box 8080 <br /> Martinez, California 94553 <br /> Re Quarterly Monitoring Report - Fourth Quarter 1997 <br /> Shell Service Station <br /> 4445 Pershing Avenue <br /> Stockton, California <br /> WIC #204-7524-2408 <br /> Dear Mr Perez <br /> This Quarterly Monitoring Report describes the recently completed activities associated with <br /> ground water monitoring and sampling at the referenced site (Plates l and 2) This report was <br /> prepared to meet quarterly reporting requirements Issued by the Regional Water Quality Control <br /> Board, Central Valley Region and San Joaquin County Public Health Services <br /> Quarterly Monitoring & Sampling Summary <br /> Ground water monitoring and sampling for this quarter are summarized below <br /> • Blame Tech Services, Inc (Blaine) of San Jose, California measured ground water levels <br /> and collected samples from Wells MW-1 through MW-4 and VEW-1 on November 21, <br /> 1997 Samples were transported to Sequoia Analytical (Sequoia) of Redwood City, <br /> California for chemical analysis <br /> CAMBRIA <br /> • Cambria Environmental Technology, Inc (Cambria) evaluated water-level measurement <br /> ENVIRONMENTAL <br /> data and prepared a ground water contour/chemical concentration map (Plate 2) <br /> TECHNOLOGY,INC Ground water appears to flow northeast and south of Well MW-4 at an approximate <br /> 270 PERKINS STREET, hydraulic gradient of 0 003 <br /> PO Box 259 Wells MW-1 through MW-4 were ND for TPPH and benzene and Well VEW-1 <br /> SONOMA, contained 150 ppb TPPH Wells MW-4 and VEW-1 contained 7 9 and 29 ppb MTBE, <br /> respectively <br /> CA 95476 <br /> 007)935-M <br /> FAX(7077 935-6649 <br />