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SAN JOAQUIN COUNTY PUBLIC HEALTH SERVICES <br /> ENVIRONMENTAL HEALTH DIVISION San Joaquin County <br /> SITE MITIGATION UNIT <br /> 304 E.WEBER STREET Public Health <br /> STOCKTON CA 95201 Services <br /> RON ROWE Environmental <br /> SENIOR REHS Division , <br /> PHONE#209 468-0342 <br /> FAX#209 468-3433 <br /> Fax <br /> To: BRETT HUNTER/ROGER HOFFMORE From: RON ROWE <br /> CHEVRON/SECOR PHS/EHD SITE MITIGATION UNIT <br /> Fax: 916-364-1889 Pages: 3 <br /> Phone: Date: August 5, 1999 <br /> Re: 508 CHARTER/CHEVRON 9-2033 CC: NA <br /> ❑ Urgent ❑ For Review ❑ Please Comment ❑ Please Reply ❑ Please Recycle <br /> • Comments: <br /> Mr. Hunter and Hoffmore, <br /> Please see the attached workplan approval for the Chevron site at 508 Charter. At least two continuous <br /> core boreholes must be installed, one additional borehole should be placed in the down gradient <br /> position along the eastern property line to similar depth ( 90' bgs ) during this mobilization. Sample <br /> collection and analyses should focus on preferential flow paths particularly in the saturated zone. <br /> Should you have questions regarding this correspondence please contact me at (209) 468-0342. <br /> Thanks, Ron. <br />