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• f <br /> Wright <br /> Environmental `"`� V/ <br /> Services, Inc. <br /> APR 16 2003 Construction ♦ Engineering ♦ Remediation <br /> 0fi2M�T/SERVICES <br /> ONMENT HEALTH <br /> Project No. <br /> April 7, �� <br /> City of Tracy <br /> 560 Tracy Boulevard <br /> Tracy, CA 95376 <br /> Attn.: Mr. Paul Verma <br /> Re: Soil and Groundwater Initial Site Assessment <br /> Boyd Service Center, Bldg. C <br /> Wright Project No. 4529-D PHS EHD Site Code 1421 <br /> Dear Mr. Verma <br /> Wright Environmental Services, Inc. (Wright) is pleased to provide you with this report for the <br /> environmental investigation at the above referenced site (city corporation yard) located at 520 <br /> Tracy Boulevard, Tracy, California (see Figure 1). The purpose of this work was to ascertain the <br /> depth to groundwater, identify suspected petroleum contaminants in soil and groundwater and <br /> evaluate to install monitoring wells around the former tank area as required by the San Joaquin <br /> County Public Health Services Environmental Health Division (PHS EHD) in their letter dated <br /> January 26, 1998. <br /> Background <br /> The corporation yard is adjacent to an area formerly used by the railroad for bulk locomotive fuel <br /> storage. Aerial photographs show that large surface tanks stored fuel for decades and leakage has <br /> occurred. Prior to acquiring the property for the corporation yard, the property shared a common <br /> boundary to this railroad fuel storage area and automotive fuels also may have been stored in this <br /> area. Sampling for the presence of contamination has not been performed in this immediate <br /> vicinity however, other areas of former bulk railroad fuel storage areas in Tracy have revealed <br /> contaminated soil and groundwater. <br /> The City used three underground fuel storage tanks (Tank 41 5,000 diesel; Tank#2 8,000 gallon <br /> gasoline; Tank #3 8,000 gallon gasoline) until their removal from the site on December 22, 1998 <br /> (see Figures 1, 2 and 3). Soil excavated from the tank pit was stockpiled on-site and soil samples <br /> were collected from beneath the tanks (two samples each at 15 feet) and dispensers (one sample <br /> each at 3 feet). The results are presented in the attached Tables i and 2. The data indicate that <br /> leakage has occurred from Tank #2 and Dispenser #2 into soil. A water sample collected from <br /> the tank pit was also contaminated. Approximately 40 cubic yards of contaminated tank backfill <br /> NOW 67 E. 10th Street ♦ Tracy,CA 95376 Page 1 of 8 <br /> 209.833.0758 • Fax 209.832.5152 <br /> wright@inreach.com Lic. #651501 A-B Ha:Mat iht <br /> websit hup://home.inreach.com1wright r/ <br />