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SECOR <br /> lulernaliwml hlcapol-aled <br /> May 10, 2001 <br /> Mr. Marty Hartzell 0�7` <br /> California RWQCB Central Valley Region 110 <br /> 3443 Routier Road, Suite A <br /> Sacramento, CA 95827-3098 <br /> Subject: Work Plan for Additional Groundwater Assessment <br /> Ranch Market <br /> 23569 South Santa Fe Road <br /> Riverbank, California <br /> SECOR Project No. 077.42083.008 <br /> Dear Mr. Hartzell: <br /> SECOR.Intemational Incorporated(SECOR), working on behalf of Mr. Durhim Ali Jubari, <br /> submits this letter as a work plan for groundwater assessment at the Ranch Market Site located <br /> at 23569 South Santa Fe Road in Riverbank, California(Figures 1 and 2, Attachment 1). <br /> REGULATORY REVIEW & DIRECTION <br /> This work scope will be conducted in response to a May 3, 2001, meeting with Regional Water <br /> Quality Control Board,Central Valley Region(RWQCB). The RWQCB requested the <br /> assessment include the following: <br /> • Further definition of the lithology between the former underground storage tank <br /> (UST)pit and DW-3 and DW-4, and east of the site across South Santa Fe Road <br /> utilizing Cone Penetrometer Testing(CPT); <br /> • Vertical distribution of gasoline range petroleum hydrocarbons dissolved in <br /> groundwater between the former UST pit and DW-3 and DW-4, and east of the <br /> site across South Santa Fe Road(Figure 2); <br /> • Monitor depth to bottom in offsite domestic wells DW-3 and DW-4; <br /> File!Ranch Market\Wmkplan\Rb-CPT Wmkplan.dac <br /> .301? Ki1,,ore /toad. tuile 100. Rrn ebo Cordova. Cd 956711 9/6.861.0.100 9/0.8610430 Fax ni(ircecor.com <br />