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1 <br /> submitted in September, 1996 to the Environmental Health Division (EHD) of the County of San <br /> Joaquin's Public Health Services Agency The UST Removal Report indicated that soil removed <br />' from the tank pit cavity was impacted, as was the groundwater encountered in the tank pit <br /> 1 <br /> 3.1 Site Physical Description <br /> 1 <br />' The Learner Company site is located at 2711 Navy Street, in Stockton, California The local area <br /> is industrial in nature, with a number of large bulk fuel tank farms located close to the property <br />' Clayton does not have an accurate site plot plan, a plot plan from a previous investigation is attached <br /> for reference The site is located within one quarter mile of the San Joaquin River and the Port of <br />' Stockton Deep Water Channel <br /> 1 <br /> 3.2 Site History <br /> The UST Removal Report is the only investigation report reviewed by Clayton Soil samples <br />' conducted during the UST removal indicated that soil contained up to 4,300 mg/kg diesel fuel, with <br /> no gasoline, low benzene (maximum of 0 6 mg/kg), and total lead up to 35 mg/kg Groundwater <br />' samples contained diesel at concentrations up to 4300 ug/l, and MTBE at concentrations up to 3,200 <br /> ug/l <br /> 1 <br />' 3.3 Types of Materials Known To Have Been Used On The Site <br />' Clayton's investigation work will be related to the UST contamination only As related, diesel fuel, <br />' gasoline, and lead have been found in soil sampled in the UST tank pit Additionally, MTBE has been <br /> found in groundwater in the open tank pit <br /> 1 <br /> The Learner rarfan) Health&Safety Plan A-4 <br />' PRE iss'p97n15a7n16 hip Rev 0(June 1997) <br /> 1 <br />