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' Mr Harlin Knoll Environmental <br /> Resources <br /> 14 Page 2 August 1948 Management <br /> P <br /> time of the field investigation The majority of the site is asphalt-paved, <br /> although the concrete foundation of the former railway express building <br /> is visible (Figure 2) One overhead utility line was present at the time of <br /> these field activities, this line was scheduled to be removed prior to <br /> demolition activities <br /> The parcel which includes the former UST site is planned to be <br /> developed as a new transportation facility, the Stockton Rail/Multimodal <br /> Station Future potential operations and structures at the site include bus <br /> t parking, passenger loading platforms, auto parking, and a passenger <br /> depot building <br />' PREVIOUS INVESTIGATIONS <br /> A Phase I investigation of a 2 8 acre parcel that included the 936 East <br /> Weber Avenue property was conducted in February and March 1997 by <br /> Espana Geotechnical Consulting in preparation for development of the <br /> Stockton Rail/Multimodal Station The report entitled Phase I Site <br /> Assessment, Stockton Rail/Multimodal Station, Cthj of Stockton, California, <br /> (14 March 1997) noted the former presence of a UST and recommended <br /> that soil samples be collected at the former tank location as part of a <br />' Phase II investigation According to a UST removal permit application <br /> filed with the City of Stockton Fire Department, a 1,000-gallon gasoline <br /> tank was removed from the 936 East Weber Avenue site by W W Vernon <br />' Co , Inc , some time after 27 August 1979 <br /> During October 1997, a Phase II Investigation was conducted by Wright <br />' Environmental Services, Inc , on behalf of the San Joaquin Rail <br /> Commission As part of this investigation, borings were drilled at the <br />' former tank location (B-2) and 25 feet to the southwest near the former <br /> location of a battery storage area (B-3 and B-4) The locations of these <br /> borings are shown on Figure 2 <br />' Analytical results of samples collected from these borings are <br /> summarized in Table 1 These results indicated that soil in the vicinity of <br />' the former tank was impacted by total petroleum hydrocarbons in the <br /> gasoline range (TPH-g) TPH-g was detected in boring B-2 at <br /> concentrations of 17,000 and 13 milligrams per kilogram (mg/kg) at <br /> depths of 16 5 and 215 feet below ground surface (bgs), respectively In <br /> 1 <br />