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I • • <br /> LANDAU <br /> --1 ASSOCIATES <br /> November 11, 2005 MIAHWd`li 3d <br /> H11d3H IN3wNOUTAN3 <br /> San Joaquin County Public Health Services 9002 Q 9 AON <br /> 304 East Weber Avenue, Third Floor <br /> P O Box 388 UNAR33(9 <br /> Stockton, California 95201-0388 <br /> Attn Mr Harlin Knoll <br /> RE: TIME OIL COMPANY PROPERTY No.04-0419,LOCKEFORD,CALIFORNIA-RESPONSE <br /> TO CLOSURE REQUEST AND]FOLLOW-UP(GROUNDWATER MONITORING RESULTS <br /> Dear Mr Knoll, <br />' This letter presents a response to comments to the site closure request dated March 17, 2005, for <br /> the Time Oil Company (Time Oil) Property No 04-049, located at 14000 East Highway 88 in Lockeford, <br />' California (site, Figure 1) Based on comments presented in electronic mail correspondence dated May <br /> 26, 2005, between Mr Todd Brown of Secor International and Mr Harlin Knoll of the San Joaquin <br /> M County Public Health Services, the following additional information was requested to assess the <br /> applicability of site closure <br /> o A door-to-door water well (receptor) survey <br /> 1 0 One additional groundwater sampling event to include analysis of all gasoline constituents, <br /> including 1,2-dichloroethane(1,2-DCA), at all site monitoring wells <br />' This letter summarizes actions performed in August 2005 to collect the requested data <br />' Door-to-Door Water Well (Receptor) Survey <br /> 1 Based on information presented in the site closure request document, one irrigation well and two <br /> municipal water supply wells were found within 2,000 ft of the site (Secor 2005) The municipal wells <br /> are located approximately 900 ft northeast and 1,500 ft southwest of the site The irrigation well is <br /> located approximately 1,900 ft south of the site A water supply well location map is included as <br /> 1 Attachment A <br /> On August 15, 2005, a door-to-door water well survey was conducted in the vicinity of the site <br /> The purpose of the survey was to identify any private drinking water wells within 2,000 ft of the site An <br /> attempt was made to personally contact all owners and tenants at residential and commercial properties <br /> At residential and commercial properties with no answer, an information request letter explaining the <br /> ENVIRONMENTAL ! GEOTECHNICAL I NATURAL RESOURCES <br /> 130 2nd Avenue South - Edmonds WA 98020 (425)778-0907 • fax(425)778-6409 - www landounc corn <br /> SEATTLE - SPOKANE - TACOMA - PORTLAND <br />