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SECTION 1 <br /> INTRODUCTION <br />' This Remediation Plan (Plan), describes the planned remediation activities <br /> for two former underground fuel storage tank (UST) sites on Catellus <br /> Development Corporation (Catellus) property at the western extreme of <br /> West Weber Avenue in Stockton, California (Figure 1-1) Previous <br /> remedial activities successfully removed the majority of petroleum <br /> hydrocarbon-impacted soils from the site, however, residual <br /> hydrocarbons located beneath one of the site buildings could not be <br /> addressed at that time These two warehouses have now been demolished <br /> and access to the underlying soils is possible <br /> On behalf of Catellus, Environmental Resources Management (ERM) has <br /> discussed the planned remediation activities with the County Public <br /> Health Services/Environmental Health Division (PHS/EHD) During <br /> these discussions, the PHS/EHD requested that a workplan be prepared <br /> to address the proposed remedial activities To facilitate PHS/EHD <br /> review, this Plan summarizes the previous remediation activities, as <br /> provided in a letter report to the PHS/EHD (ERM-West, Inc , 25 February <br /> 1994) and details additional remedial activities for removal of residual <br /> hydrocarbons from the subject saes This Plan has been prepared in <br />' fulfillment of PHS/EHD's request, in accordance with applicable <br /> regulatory guidelines, specifically the Tri-Regional Board Staff <br /> Recommendations for Preliminary Evaluation and Investigation of Underground <br /> Tank Sites, dated 10 August 1990 <br /> This Plan addresses two specific site locations at the following addresses <br /> on the West Weber property (Figure 1-2) <br /> • 1515 West Weber Avenue (Former Tank Site #1), and <br /> • 1325 West Weber Avenue (Former Tank Site #2) <br /> USTs were removed from both sites and releases of petroleum products <br /> from the USTs were detected The extent of the constituents in soil and <br /> ground water was characterized at both sites In October 1993, total <br /> petroleum hydrocarbon (TPH) impacted soils were excavated and <br /> remediated at both the Former Tank #1 and Former Tank #2 sites <br /> 1-1 <br />