TCLP — Toxicity Characteristic Leaching Procedure
03/08/2026
“How can we determine if waste will leach toxic chemicals when it rains?”
Surface waste management has to account for a lot of variables. One of them includes determining if the waste will leach toxic chemicals when it rains. SO what if we were to grind waste down like it was in a landfill, mix the waste with a weak acidic solution similar to acid rain, tumble the mixture for 18 hours, and chemically analyze the leachate output for contaminant limits? Well, these are the steps behind the TCLP — Toxicity Characteristic Leaching Procedure, an EPA RCRA procedure to determine the potential toxicity of waste leachate.
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