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3.6. Sample Containers and Preservation Pre -cleaned containers will be supplied by the laboratory and will not be rinsed prior to sample collection. No preservative will be added to the containers. 3.7. Disposal of Residual Materials In the process of collecting environmental samples at the Sante Fe Road Disposal Site, the CIWMB sampling team will generate different types of potentially contaminated investigation - derived waste (IDW) that may include: ■ Used personal protective equipment (PPE) ■ Disposable sampling equipment ■ Decontamination fluids The U.S. EPA's National Contingency Plan requires management of IDW generated during sampling comply with all applicable or relevant and appropriate requirements to the extent practicable. The IDW will contain minor residual amount of the soil/burn ash. These wastes are not considered hazardous and will be disposed of at a municipal landfill. Used PPE and disposable equipment will be double bagged and placed in municipal refuse dumpster. Any PPE and disposable equipment that is to be disposed of which can still be used will be rendered inoperable before disposal. Decontamination fluids that will be generated during sampling will consist of nitric acid, deionized water, residual contaminants, and water with non -phosphate detergent. The volume and concentration of the decontamination fluid will be sufficiently low to allow disposal at the site or sampling area. This minimal volume of decontamination fluid will be disposed of to the sanitary sewer system. If hazardous or radioactive material are found during sampling screening activities, appropriate level of notification and response procedures will be implemented in accordance with the Site Specific Health and Safety Plan. 3.8. Analytes of Concern Analytes of concern at this site are residual heavy metals from burning solid waste and any unburned organic materials left in the soil matrix. 3.9. Analytical Procedures Each sample container's headspace will be tested using the GMI 422 Gas Surveyor. After field screening the sample containers will be capped, sealed and labeled (see packaging procedures), and sent to CIWMB's contract laboratory, ExcelChem, where composite samples will be analyzed for CAM 17 metals, pH, reactivity, ignitability, TPH BTEX/Diesel (EPA Method 602/8020/8015m), organochlorine pesticides/PCBs (EPA Method 608/8080) and WET (to determine if STLC is exceeded). Discrete samples will be analyzed for California Assessment Manual (CAM) 5 metals by the Total Test procedure using EPA Method 6010/7000. Samples with the highest concentrations of lead will also be analyzed for CAM -5 metals using the Waste Extraction Test (WET) procedure (EPA Method 6010) to determine if Soluble Threshold Limit Concentration (STLC) limits are exceeded. If CIWMB 17