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2.2. Based on the information available to DTSC, DTSC concludes that <br /> further investigation is needed to determine the nature and extent of hazardous waste <br /> or hazardous waste constituents released in the following SWMUs and/or AOCs: <br /> AOC #1 , Area 1, Bulk Storage Area, 1848 Field Avenue <br /> AOC #2, Area 2, Vacuum Baghouse Area, Outside Building <br /> 2, 1856 Field Avenue <br /> AOC #3, Area 3, Air Compressors Area, Outside Building 2, <br /> 1856 Field Avenue <br /> AOC #4, Area 4, Lamination Press Area, 1856 Field Avenue <br /> AOC #5, Pre-Clean Room, 1848 Field Avenue <br /> AOC #6, Multibond Line Room, 1848 Field Avenue <br /> AOC #7, DES Line, 1848 Field Avenue <br /> AOC #8, Batch Wastewater Treatment Unit, 1848 Field <br /> Avenue <br /> AOC #9, Continuous Wastewater Treatment Unit, 1848 Field <br /> Avenue <br /> AOC #10, Backwall, 1848 Field Avenue, Discoloration on <br /> cement floor <br /> AOC #11, Chemical Storage Area, 1848 Field Avenue <br /> AOC #12, Underground Pipe line area located between <br /> Buildings 1 and 2 <br /> AOC #13, Chemical Storage Area, 1856 Field Avenue <br /> AOC #14, Groundwater <br /> 2.3. The hazardous waste and hazardous waste constituents of concern <br /> at the Field Facility are metals, corrosives, volatile organic compounds (VOCs), semi- <br /> volatile organic compounds (SVOCs), PCBs, and petroleum hydrocarbons. <br /> 2.4. Hazardous wastes or hazardous waste constituents may migrate <br /> from the Field Facility into the environment through groundwater, airborne dusts, and <br /> surface runoff water. <br /> 2.5. The Field Facility is located approximately 500 feet from the Turning <br /> Basin of Stockton Deep Water Channel of the San Joaquin River and less than one-half <br /> mile from Mormon Slough. The Smith Canal is located less than one mile to the north <br /> -3- <br />