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05 January 2018 A+dvanc+edCveo AGE Project No. 14-3154 E r)v i ro ri rn e r)t a l Page 7 of 9 " Selected soil samples (appropriate for each evaluation and chemical source) will be analyzed by a California Department of Public Health (CDPH)-certified laboratory for the following constituents: • Dioxin and Furan by EPA Method E1613 and SW8290. • Total petroleum hydrocarbons quantified as gasoline, diesel and oil range compounds (TPH-g,d,o) in accordance with EPA Method 8015 Modified; • Volatile organic compounds (VOCs), including chlorinated VOCs and "BTEX" compounds and fuel additives/fuel oxygenates (methyl tertiary butyl ether [MTBE], tertiary butyl alcohol [TBA], di-isopropyl ether [DIPE], ethyl tertiary butyl ether [ETBE], tertiary amyl methyl ether [TAME] and lead scavengers 1,2- dichloroethane [1,2-DCA] and 1,2-dibromomethane [EDB]) in accordance with EPA Method 826013; • Polychlorinated bi-phenols (PCBs: full list) in accordance with EPA Method 8082. • Polynuclear aromatic hydrocarbons (PNAs) or polycyclic aromatic hydrocarbons (PAHs) and semi-volatile organic compounds (SVOCs) in accordance with EPA Method 8270; • CAM 17 Metals Total Threshold Limit Concentration (minimally: lead, cadmium, chromium, nickel and zinc) by EPA Method 601013/6020/207/208. Soluble Threshold Limit Concentration may additionally be analyzed for metals. Laboratory reports for soil analysis, testing methods and laboratory quality assurance/quality control (QA/QC), and sample chain of custody documentation will be presented in a report with findings and recommendations. Step-Out Soil Borings Initially, a minimum of seven (7) additional soil borings will be advanced as step-out borings surrounding the former waste cell limits to the north, south, and east to define and verify the limits of glass waste and minor debris formerly located in the waste cells. Step-out borings will be advanced approximately 10 to 15 feet to the north, south, and east of the waste cells to verify the limits of the waste cells. The soil borings will be continuously sampled from surface grade to 15 feet bsg and soil will be visually classified by AGE personnel in accordance with the Unified Soil Classification System (USCS). Soil boring locations are depicted in Figure 3. If any waste is encountered, a sample of the waste will be collected and analyzed for TPH, dioxin/furans and the full list of PCBs. If waste is encountered in any of the step-out borings, additional soil borings will be advanced further to the north, south and east in approximate 10-foot increments until the limits of the waste are defined in each direction.