ARCHIVED REPORTS_2019 SOIL MGMT PLAN (MAY)

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ekienvironment & water 2.4 Waste Characterization 2.4.1 Characterization of Soil Excavated From Waste Pits Characterization of soil from any remediation of previously unknown waste pits will be conducted in accordance with procedures described in the WU1 Plan Addendum (Appendix B). Excavated and stockpiled soil from remediation excavations will be evaluated for potential on - Site reuse or will be characterized and transported to an offsite permitted disposal facility. Any waste materials designated for off-site disposal will be transported by properly licensed contractors to a permitted disposal facility in accordance with all applicable laws and regulations. Transport manifests and disposal documentation will be maintained. 2.4.2 Characterization of Excavated Visibly Stained or Odorous Soil For excavated visibly stained or odorous soil designated for off-site disposal, one 4 -point composite soil sample shall be collected for every 500 cubic yard stockpile. Chemical analyses of soil for waste characterization purposes anticipated to be required by the permitted disposal facilities are listed below and shall be analyzed by a California state -certified laboratory. • VOCs using EPA Method 826013; • SVOCs using EPA Method 8270C; • TPH-g using EPA Method 8015M; • TPH-d and TPH-mo with silica gel cleanup using EPA Method 8015M; and • Title 22 metals using EPA Method 6020. Additional chemical analyses for further waste characterization that may be required by the permitted disposal facilities may include the following analytical methods, to be performed by a California state -certified laboratory. • PCBs by EPA Method 8082; • Dioxins and furans by EPA Method E1613/SW8290; • Waste extraction test ("WET") using CCR Title 22, Division 4.5, Chapter 11, Appendix II and subsequent selected metals analysis using EPA Method 6020; • Toxicity Characteristic Leaching Procedure ("TCLP") using EPA Method 1311 and subsequent selected metals analysis using EPA Method 6020; and • Fish Bioassay (96 -hour). Soil analytical results shall be reported by the California state -certified analytical laboratory on a wet -weight basis. 2.4.3 Characterization of Excavated Soil with Surface Glass and Concrete Excavated soil that contains glass cullet but not waste materials of the type documented in the North and South Waste Cells and/or known to contain COC's, shall be deemed acceptable for