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IES � <br /> Wright <br /> EnvironmentalV/ <br /> La,9 Services, Inc. <br /> APR S 2003 Construction • Engineering ♦ Remediation <br /> ` <br /> April 7, g,,OKMENT HEALTHL�H/SERVICES <br /> Prodect N29 <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 #1 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 1 and 2 The data indicate that <br /> leakage has occurred from Tank 92 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 /> 0 67 F 10th Street . Trac CA 95376 <br /> Tracy, Page i of 8 <br /> 209 833 0758 . Fax 209 832 5152 <br /> wr:ght@inreach com Cic #651501 A-B HazMat ils� <br /> websit http //home inreach com/wreght <br />