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/ PRIVILEGED & CONFIDENTIAL <br /> ADDITIONAL PHASE II SUBSURFACE INVESTIGATION <br /> Wells Fargo Bank Property <br /> ' 49 South Wilson Way <br /> Stockton, California <br /> SJCEHD Site No. 506077 <br /> ' INTRODUCTION <br /> Building Analytics is pleased to submit this report summarizing the Additional Phase II <br /> Subsurface Investigation to Wells Fargo Bank, Corporate Properties Group, and the San <br /> Joaquin County Public Health Services, Environmental Health Division (SJCEHD). This <br /> ' report is regarding the Wells Fargo Bank property located at 49 South Wilson Way in <br /> Stockton, California. The Phase II Subsurface Investigation was performed in general <br /> accordance with the scope of services outlined in Building Analytics' Proposal Number <br /> LA3417 dated June 3, 1997 and Work Plan dated July 25, 1997. <br /> BACKGROUND <br /> Site Location <br /> The site is located at 49 South Wilson Way, on the northwest corner of Wilson Way and <br /> Market Street, in the City of Stockton, San Joaquin County, California (Figures I and 2). <br /> The site is located in the northeast quarter of Section 32, Township I North, Range 6 East, <br /> of the Mount Diablo Base and Meridian. <br /> Phase I Environmental Site Assessment (ESA) <br />' Building Analytics conducted a Phase I Environmental Site Assessment (ESA) of the <br /> subject property in October, 1995. The following environmental issues were identified: <br />' According to historical Sanborn fire insurance maps, a gasoline service station existed on <br /> the subject property during the 1950's. <br /> During the site reconnaissance, Building Analytics observed an on-going - subsurface <br /> investigation at the former Rock Construction facility adjacent, on the southeast corner of <br /> the intersection of South Wilson Way and Market Street. <br />' The government records research indicated that a Texaco gasoline service station currently <br /> located adjacent, on the southwest corner of the intersection, is identified as a leaking <br /> underground storage tank (LUST) site. <br /> Phase II Subsurface Investigation <br />' A Phase II Subsurface Investigation was performed by Building Analytics in February <br /> 1996, to investigate the potential effects of an environmental impact by the former on-site <br /> gasoline service station. Soil samples were collected from five Geoprobe borings at depths <br /> of up to 25 feet below ground surface (bgs). The soil samples revealed non-detectable <br /> concentrations for total petroleum hydrocarbons as gasoline and diesel (TPH-g and TPH-d) <br /> and benzene, toluene, ethylbenzene and xylenes (BTEX). Total recoverable petroleum <br /> 1 197501-Stockton <br />