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ENVIRONMENTAL HEALTH DEPARTMENT <br /> Pp U,LN SAN JOAQUIN COUNTY Unit Supervisors <br /> Donna K. R.E.H.S. Carl Bor man,R.E.H.S. <br /> Director 304 East Weber Avenue, Third Floor Borg <br /> man, <br /> Olsen,R.E.H.S. Stockton, California 95202-2708 Mike ,R.E.H.S.,R.D.I. <br /> . Dougllasas W.Wilson,R.E.H.S. <br /> cg1FaR' P Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S. Robert McClellan,R.E.H.S. <br /> Program Manager Fax: (209)464-0138 Mark Barcellos,R.E.H.S. <br /> KAREN PETRYNA <br /> SHELL OIL PRODUCTS <br /> PO BOX 7869 <br /> BURBANK CA 91510-7869 <br /> RE: SHELL SERVICE STATION SITE CODE: 1746 <br /> 880 VICTOR ROAD <br /> LODI CA 95240 <br /> WORKPLAN: Interim Remediation Work Plan DATED: June 21, 2002 <br /> PREPARED BY: Cambria Envrionmental Technology. Inc. <br /> APPROVED 1$ with Conditions (See Below) <br /> DISAPPROVED ❑ <br /> ADDENDUM ❑ Submit by : <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN (H&S <br /> 25299.37,s ubd.(c)(3).): <br /> 1) Perform a 5-day aquifer pump test (step test and a constant-rate test) using <br /> monitoring well 4 (MW-4) as extraction point. <br /> 2) Install two additional piezometers as observation points. <br /> COMMENTS AND CONDITIONS: <br /> 1) Collect groundwater samples at the start and end of the pump test,whenever the <br /> rate of extraction is changed, and periodically during the pump test for <br /> laboratory analyses in order to evaluate the sustainability of the amount of <br /> contaminates being extracted. <br /> 2) Commence proposed work by September 10,2002. <br /> REASONS FOR DISAPPROVAL OF THE WORKPLAN (H&S 25299.37, <br /> subd.(C)(3).): None <br /> DATED July 10, 2002 BY 4 <br /> Cc: CRWQCB, Central Valley Region—Marty Hartzell <br /> Cc: Cambria—Aubrey K. Cool <br />