Laserfiche WebLink
t <br /> •r+'"Y`-""tea (/,.a,, <br /> i' <br /> r international lnco rated, <br /> b 4f <br /> July 12, 2001 <br /> Project 077.43485.i 70 <br /> Mr. Harlin Knoll <br /> San Joaquin County Environmental-Health Division <br /> 304 East Weber Avenue, Third.Floor. <br /> Stockton, CA 95201 <br /> Re: Site Assessment <br /> Chevron Service Station 9-2396 <br /> 25651 Highway 99 North <br /> Acampo, CA <br /> Dear Mr. Knoll_: <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Products'Company <br /> (Chevron), submits this report documenting the findings and results of assessment <br /> activities,at the above referenced site (Figures 1 and 2). The site assessment consisted of <br /> 1 advancing three exploratory borings to collect soil and groundwater,samples and <br /> collecting a water sample from the on-site domestic water supply well. The purpose of <br /> this assessment was to evaluate possible hydrocarbon impact to soil and groundwater at <br /> the site: <br /> } SITE BACKGROUND AND PREVIOUS INVESTIGATIONS <br /> The site is an active service station located at 25651 Highway 99 North in Acampo, <br /> California. <br /> On August 25, 1993, one waste oil underground storage tank (UST) and one heating oil. <br /> UST were removed. One soil sample was taken from beneath each of the USTs. The <br /> heating oil UST soil sample, D-1-9', reported non-detectable levels for all analyzed <br /> constituents. The waste oil UST soil sample, WO-1-9', reported non-detectable levels of, <br /> all analyzed constituents except for chromium at-29 parts per million (ppm), lead at 7 <br /> ppm, zinc at 44 ppm, and nickel at 21 ppm. <br /> On December 15, 1993, one 10,000 gallon, two 6,000 gallon, and one 3,000 gallon single <br /> walled steel USTs were removed. The USTs appeared to be in good condition, with no <br /> visible holes observed. The associated product piping was also removed at this time. <br /> Approximately 1,000 cubic yards of soil was removed to facilitate the installation of the <br /> 3017 Kilgore Road, Suite 100, Rancho Cordova, CA 95670 916.861.0400 916.861.,0430 Fax wwi) ecorxom <br />