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MIC BARBER P.E. & ASSOCIATES <br /> 8710 Mt Vernon Rd,Auburn CA 95603 Phone/Fax(530)823-2156 <br /> March 14, 2006 <br /> 1 <br /> Mr Jeffrey Wong, Senior REHS <br /> ' San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Ave , Third Floor <br /> Stockton, CA 95202 <br /> ' Dear Mr Wong, <br /> 1 Transmittal of. Quarterly Groundwater Monitoring Well Findings- <br /> December 17, 2005 - Sample Results <br /> Western Oil & Spreading Inc. Acampo Plant Site - <br /> 19256 N Highway 99, Acampo, CA <br /> Please find below and attached, Monitoring Well Analysis Report for the subject site, <br /> ' covering sampling event of December 17, 2005 <br /> ' Background <br /> • The site is on approximately 2 13 AC of relatively flat, covered by aggregate re ate road <br /> ' base, Improved land hosting a liquid asphalt and lignin based road oil storage and <br /> mixing facility The site's industrial history has been chronicled back to 1955 <br /> Currently there are 16 above ground storage tanks containing petroleum <br /> hydrocarbon, water or lignin based products The site is active In 1985 the <br /> business was purchased by Mike and John Telfer and renamed Western Oil and <br /> Spreading, Inc (WOS) The site is bordered on the north by an open field <br />' (previously an apple orchard), to the east and south by open fields and to the west by <br /> several homes, separating it from the frontage road It is one quarter mile south of <br /> Woodbridge Road in Acampo, CA within San Joaquin County Reference <br />' ATTACHMENT 1, LOCATION MAP <br /> Four underground storage tanks were removed from the site in October 19871 <br /> Petroleum hydrocarbon contamination was discovered resulting in an ongoing effort to <br /> characterize, remedy possible contamination and close the site <br /> D K Barber P E and Associates continued characterization efforts from October 2000 <br /> through April 2001 Sampling with a Geoprobe, direct push technology boring ng, <br /> installation of a 62 FT deep monitoring well (MW) and sampling of the ground water <br /> have indicated that contamination exists Reference ATTACHMENT 7, <br /> SITE DRAWING <br /> Ref "Report for 19256 N Hwy 99, Acampo,CA May 24,1999 Gallardo&Associates,Windsor,CA <br />