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22 February 2019 <br />AGE-Project No. 14-3154 <br />Page 9 of 12 <br /> <br />7.1. CHEMICALS/CONSTITUENTS OF CONCERN <br /> <br />During the investigations performed at WU1 on Parcel B, several or all <br />constituents/chemicals of concern (COCs) were analyzed from soil, soil-gas, waste, and <br />water samples. As stated above, it’s anticipated that the small area of WU1 wastes <br />beneath Parcel A is of similar character and composition as the wastes that were <br />extensively characterized to the south beneath Parcel B. Therefore, it’s very likely the <br />COCs will be similar also. COCs include: <br /> <br />• CAM 17 metals: (California Assessment Metals or Title 22 Metals). CAM 17 metals <br />were analyzed in selected soil and waste samples for Total Threshold Limit <br />Concentrations (TTLC), Soluble Threshold Limit Concentrations (STLC), and <br />Deionized Water Waste Extraction Test (DI WET); dissolved CAM 17 metals were <br />analyzed in selected water samples. <br />• Dioxin and furans. <br />• PCBs: polychlorinated bi-phenols (PCBs) <br />• TPH-g/d/o: (total petroleum hydrocarbons quantified as gasoline, diesel and oil <br />range compounds). <br />• SVOCs: (semi-volatile organic compounds). <br />• PAHs: (polycyclic aromatic hydrocarbons or polynuclear aromatic hydrocarbons- <br />SVOCs). <br />• VOCs: (volatile organic compounds). <br />• Methane (soil-gas). <br /> <br /> <br />7.2. SITE SPECIFIC CONTAMINANT SOURCES <br /> <br />Based on the activities of the Former PNA Facility and the history and background of site <br />activities performed at WU1 on Parcel B, the following potential contaminant sources <br />were identified for the small area of WU1 wastes beneath Parcel A. <br /> <br />• The disposal of glass processing waste is the main contaminant source. Glass <br />processing waste included the raw materials utilized to process glass including <br />waste glass, mixed industrial debris (including plastics or laminates, small metal <br />objects/debris, and baghouse dust), and potentially burn debris. <br />• The glass processing waste is a potential source of the following contaminants: <br />metals, dioxin and furans, PCBs, SVOCs, PAHs, and VOCs. <br />• During the glass processing, the laminated glass was autoclaved in straw oil at <br />high temperatures. Following the process, the oil was processed through the