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• 07 January 1997 <br /> AGE-NC Project No 96-0266 <br /> Page 2of6 <br /> within a building at the southern portion of the site (Building C) It is our understanding that the <br /> PHS-EHD has no record of the additional UST <br /> 23 SURROUNDING PROPERTIES <br /> The Texas Company (Texaco) operated a bulk oil and fuel storage facility directly west of the site <br /> for a minimum of forty years The former Texaco facility is listed on governmental and agency <br /> environmental database as a CALSITE listing with an unsubstantiated report of a potential hazardous <br /> waste release <br /> Even though no surficial indication of an unauthorized release of oil or fuel have been documented, <br /> the proximity of the former Texaco facility to the subject property, the volumes of hydrocarbons <br /> stored and transferred on the Texaco facility and the length of time which petroleum hydrocarbons <br /> have been associated with the Texaco facility leads AGE concluded that the adjacent former Texaco <br /> facility poses an environmental concern to the site <br /> • 3.0. SUBSURFACE INVESTIGATION AND SAMPLING <br /> At the request of the Union Safe Deposit Bank, a limited subsurface investigation was conducted at <br /> the site on 14 November 1996 The investigation focused on both the areas of the former UST <br /> located within the City of Stockton right-of-way and the existing UST located within Building C and <br /> Building I a metals plating shop The investigation was performed to determine if hydrocarbon- <br /> impacted soil and/or ground water was present at the site and if metals had impacted the site, <br /> especially the area surround the planting shop <br /> Five soil probe borings were advanced, both on the site and off the site The probe borings were <br /> advanced to maximum depths of 20 feet bsg Soil and grab ground water samples were collected <br /> from selected probe borings contained total petroleum hydrocarbons quantified as gasoline(TPH-g), <br /> volatile aromatic compounds (benzene, toluene, ethyl-benzene and total xylene BTE&X) and <br /> methyl tertiary butyl ether (MTBE) <br /> Petroleum hydrocarbons were detected in soil samples collected in the former UST excavation in <br /> San Jose Street TPH-g was detected in the soil sample P1-10 at 3,700 milligrams per kilogram <br /> mg/Kg (parts per million ppm) and BTE&X compounds were also detected as high as 430 ppm of <br /> xylene Benzene was detected in the P1-10 sample at 19 ppm TPH-g was detected in the soil sample <br /> PI-15 at 1,500 ppm and BTE&X were detected high as 150 ppm of xylene Benzene was detected <br /> • in the P I-15 sample at 2 6 ppm While, TPH-g was detected in the soil sample P 1-20 at 8 ppm and <br /> BTE&X compounds were detected as high as 0 6 ppm of ethylbenzene Benzene was not detected <br />