Toxicity is determined with a simulated leach of the waste. The leachate is analyzed for a regulated list of compounds consisting of Volatile Organics, Pesticides, Herbicides, Semi-Volatile Organics and Metals. The Toxicity of Characteristics Leaching Procedure (TCLP) is used for Pesticides, Herbicides, Semi-Volatile Organics and Metals, while the Zero Headspace Extraction (ZHE) is used for Volatile Organics.
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