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INTERNATIONAL TECHNOLOGY CORPORATION <br /> 2.0 Field Procedures <br /> During field activities, four underground fuel tanks, associated piping/dispensers and an <br /> oil/water separator were removed from BP Station #11190 (Figure 2). The following <br /> paragraphs discuss the removal, sampling and disposal procedures. <br /> 2.1 Former Underground Storage Tanks (USTs) <br /> 2.1.1 UST Removal and Disposal <br /> The site contained four single wall fiberglass USTs: <br /> - Tank No. 1 - 12,000 gallons <br /> • Tank No. 2 - 10,000 gallons <br /> • Tank No. 3 - 6,000 gallons <br /> • Tank No. 5 - 6,000 gallons <br /> On October 30, 1991, the tanks were triple rinsed and a total of 800 gallons of fuel/water was <br /> removed from the tanks by H & H Ship Service Company. The rinsate/water was transported <br /> under manifest #91507876 to the H & H facility in San Francisco for disposal. Dry ice (25 <br /> lb./1,000 gal.) was installed in each tanks fill end port to guarantee vapor stability prior to <br /> removal. <br /> LEL and OZ levels were confirmed and the tanks were removed under fire department permit <br /> #13736 (Appendix B), by representatives of Paradiso Construction Company. County <br /> Environmental Health Specialist, Letitia Resch was present to witness the excavation/removal <br /> activities. <br /> Upon removal and inspection, the tanks appeared sound. No petroleum odor or staining was <br /> noted in the underlying soils and no groundwater was present. The tanks were transported by <br /> H & H Ship Service Company to their facility in San Francisco for disposal under hazardous <br /> waste manifest numbers: <br /> • Tank No. 1 - 12,000 gallons unleaded - 91507878 <br /> • Tank No. 2 - 10,000 gallons unleaded - 91507879 <br /> MZ101-06-9Z([JSTi0054NEER 2 <br />