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r <br /> rte E <br />�1 SECOR <br /> 1A� <br /> International Incorporated <br /> January 18, 2001 = " <br /> U> <br /> Project 077 41991 018 -- <br /> Mr Ron Rowe <br /> San Joaquin County Public Health Services <br /> Environmental Health Division iD <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, CA 95201-0388 <br /> Re Site Assessment Report <br /> Chevron Service Station#9-2033 <br /> 508 West Charter Way <br /> Stockton, California <br /> Dear Mr Rowe <br /> SECOR International Incorporated (SECOR) has prepared this letter on behalf of <br /> Chevron Products Company (Chevron) to document the findings and results of <br /> assessment activities at the site referenced above (Figure 1) The purpose of this work <br /> is to further evaluate the vertical extent of petroleum hydrocarbons in the soil and <br /> groundwater The site assessment included drilling three soil borings onsite to further <br /> define lithology Discrete interval groundwater samples were collected from various <br /> depths within the bonngs Work was performed in accordance with the December 9, <br /> 1997 Work Plan for Site Assessment Activities, by Pacific Environmental Group Inc <br /> SITE BACKGROUND AND PREVIOUS INVESTIGATION <br /> The site is an operating Chevron Service Station located in a primarily commercial area <br /> at the intersection of West Charter Way and South Lincoln Street in Stockton, <br /> California A Texaco Service Station operates directly east of the site (across Lincoln <br /> Street), and an operating ARCO Service Station is northeast of the site across the <br /> intersection The City of Stockton maintenance yard to the south is reported to have, or <br /> have had, one or more underground storage tanks (USTs) <br /> Chemicals of concern at the site include total petroleum hydrocarbons calculated as <br /> gasoline (TPHg), aromatic hydrocarbons including benzene, toluene, ethylbenzene, and <br /> xylene (BTEX), and oxygenates, including methyl tertiary butyl ether (MtBE), tertiary <br /> 3017 Krlgore Road, Suite 100, Rancho Cordova, CA 95670 916 861 0400 916 861 0430 Fax www secor com <br />