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�L?mft <br /> Advanced <br /> GeoEnvironmental Inc . == <br /> o/Am-theril C(difin-111,0 <br /> 30 October 1997 <br /> AGE-NC Project No. 96-0217 <br /> Lr <br /> F \A <br /> Mr. N41ke Infurna OCT 3 1 1997 <br /> SAN JOAQUIN COUNTY PHS-EHD _NVIRON[vIENIAL �-IL-P-LTH <br /> 304 East Weber Street <br /> Stockton, CA 95204 PERM I <br /> Subject: Work Plan Addendum <br /> PALADIN MILEAGE CENTER (Gemelos Property) <br /> 2421 Holly Drive, Tracy, California <br /> Dear Mr. Infurna: <br /> In accordance with the request of Mr. John Gerrielos,Advanced GeoEnvironmental, Inc. (AGE) has <br /> prepared this Work Plan Addendum for 2421 Holly Drive in Tracy, California (the site). The <br /> location of the site is illustrated on Figure 1. A plan of the site is illustrated on Figure 2. <br /> The work is perfornied in accordance with San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control <br /> Board guidelines for investigation of underground storage tank (UST) sites, <br /> BACKGROUND <br /> The historical information for the site including the results of the installation and sampling of the <br /> three ground water monitoring wells at the site was presented in the Preliminary Investigation and <br /> Evaluation Report (PIER) dated 16 October 1996. <br /> -- <br /> According to the San Joaquin County Flood Control Department, the historical depth to ground <br /> I <br /> water in the norther riTracy area near the site has remained above 10 feet below surface C'TadC (bs-). <br /> During the UST removal in 1988, water was encountered at a nine feet bs-. Data from a UST <br /> investigation in the area of the site, collected from monitoring wells 1988, indicated that ground <br /> water was five feet bsg. <br /> SO) West Marek Lane, Sui(c A. Stockton. California 95207 <br /> Tcicphone (209) 956-0264 FAX(209)956-0700 <br />