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' r <br /> . � Working To Restore Nature <br /> hydrocarbons were present in any well, which is consistent with historical analytical results <br /> (Table 2). Laboratory reports with chain-of-custody documents are presented as Attachment 2. <br /> A reduction in monitoring and sampling frequency of the three on site wells from quarterly to <br /> semi-annually appears to be warranted at this time. This is based upon consistent nondetectable <br /> levels of petroleum hydrocarbon constituents in groundwater samples collected from the site. <br /> Upon conclusion of the investigation/remediation of petroleum hydrocarbon impacted soils <br /> associated with the recent removal of an underground fuel storage tank at the facility, site <br /> closure may be requested. <br /> Copies of this�report should be forwarded to the following individuals: � <br /> O Ms. Linda Turkatte o Ms. Elizabeth Thayer <br />` San Joaquin County CA Regional Water Quality <br /> Public Health Services Control Board <br /> Environmental Health Division Central Valley Region <br /> P.O. Box 2009 3443 Routier Road, Suite A <br /> Stockton, CA 95201 Sacramento, CA 95827-3098 <br /> i <br /> If you have any questions or need any additional information please contact John Lane at (209) <br /> 838-3507. <br /> Respectfully, <br /> RF-SNA Industries Inc. <br /> Marcie R. McCabe <br /> Project Geologist <br /> J P. Lane i <br /> Project Manager <br /> Gregory P. Stahl <br /> CA Registered Geologist No. 5023 <br /> MRM/ggk <br /> Attachments <br /> }15W5611 QR-1994.FNL 2 <br /> k <br /> E <br />