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r <br /> 4 <br /> EI Dorado Environmental, Inc. <br /> • 2221 Goldorado Trail, EI Dorado, California 95623 (916) 626.3898 <br /> Fax (916) 626-3899 <br /> RECEIVED <br /> DEC 2 2 19V <br /> December 19, 1997 <br /> yaq <br /> Mr Kenneth Earnest <br /> Senior Project Manager <br /> Ultramar Inc <br /> 525 West Third Street <br /> Hanford, California 93230 <br /> Subject Fourth Quarter 1997 Ground Water Monitoring Report <br /> Beacon Station #419 <br /> • 2350 Waterloo Road, Stockton, California <br /> Dear Mr Earnest <br /> El Dorado Environmental, Inc (EDE) has prepared this report to document the results of quarterly <br /> ground water monitoring conducted on November 21, 1997 at the subject site (Figure 1) The <br /> monitoring, conducted by Doulos Environmental (Doulos), included measurements of depth to <br /> ground water, subjective analysis for the presence or absence of free product, ground water purging <br /> and collection of ground water samples Doulos reports that all field activities were conducted in <br /> accordance with the Ultramar Field Procedures described in Attachment A <br /> GROUND WATER ELEVATIONS <br /> Prior to purging, Doulos collected depth to ground water measurements Copies of Doulos' field <br /> data sheets are contained in Attachment B Ground water elevation data collected since July 1994 <br /> are summarized in Table 1 On the basis of the current measurements,the direction of ground water <br /> flow varies across the site from the southwest to the northeast (Figure 2) at a gradient of <br /> approximately 0 02 foot per foot Ground water elevations have increased an average of 0 84 feet <br /> compared to the last monitoring event <br /> • <br />