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PSI Project Number:0575-1504 <br /> LonGuggenheim—Stockton,CA <br /> July 22, 2019 <br /> Page 1 <br /> 1 INTRODUCTION <br /> Professional Service Industries, Inc. (PSI) was retained by Guggenheim Development Services, LLC <br /> (Guggenheim) to prepare this Workplan for a subsurface investigation at 1423 Bradford Street, <br /> Stockton, California 95205 (subject site; Figure 1). Guggenheim is proposing to redevelop the property <br /> into a 7-11 convenience store with a fueling station, which would include the installation of <br /> underground storage tanks (USTs). As part of a Phase I Environmental Site Assessment completed by <br /> PSI and dated June 20, 2019, it was uncovered that the subject property was developed as a gasoline <br /> service station known as Casey's Chevron Service Gas Station in 1965 and as Sols Chevron Service in <br /> 1970. Based on the review of historical information, PSI considered the former gas station to constitute <br /> a Recognized Environmental Condition to the subject property. As such, Guggenheim requested that <br /> PSI complete a Subsurface Investigation Report to determine whether the former use of the subject <br /> property as a gas station has had an adverse impact on subsurface conditions. To complete a <br /> subsurface evaluation,the San Joaquin County Environmental Health Department(SJEHD) requires that <br /> a Workplan be prepared and then approved by the SJEHD prior to the investigation being conducted. <br /> www.intertek.com/building <br />