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Chevron Products Company 4 <br /> Chevron Station#9-4275 2905 Ben'3tTiin Holt Drive Stockton California February 23 2001 <br /> be determined by data collected through CPTs and the sentry well <br /> installation. An extraction well design will be completed using <br /> lithologic samples and data collected. Conceptually, the proposed wells <br /> will be drilled with 10-inch diameter hollow-stem augers well. Well <br /> screens of 4-inch diameter PVC wells will be installed with slot and <br /> filter packed designed in the field. <br /> Details of field and laboratory procedures are presented as Attachment B. <br /> SCHEDULE <br /> Figure 3 —Project Schedule presents the sequence of activities for this assessment through <br /> developing a Site Assessment Report for submittal to San Joaquin County. SECOR will <br /> initiate fieldwork immediately following review by the San Joaquin County Environmental <br /> Health Department. Encroachment permits from the City of Stockton and well permits <br /> from the County of San Joaquin will be obtained by SECOR personnel on February 28, <br /> 2001. <br /> If there are any questions regarding the contents of this work plan, please call us at (916) <br /> 861-0400. <br /> Sincerely, <br /> SECOR International Incorporated <br /> 5 <br /> Brian Silva <br /> Assistant Scientist <br /> cott Gable, R.G. <br /> Senior Geologist <br /> Attachments: Figure 1 - Site Location Map <br /> Figure 2 - Site Map <br /> Figure 3 --Project Schedule <br /> Attachment A - Fourth Quarter 2000 Groundwater Monitoring Report <br /> Attachment B - Field And Laboratory Procedures <br /> cc: Mr. Bob Cochran, Chevron Products Company, San Ramon <br /> Mr. Mark List, Regional Water Quality Control Board, Sacramento <br /> 1AChevron1942751REPORTS12001 Assessment_RevB.doc <br />