“The Association of Clean Water Administrators (ACWA), i.e. the association of state water quality regulators, requested EPA to revise the effluent limitation guidelines or issue new guidance regarding pretreatment standards for the metal finishing industry. EPA last issued pretreatment standards for the metal finishing and electroplating sectors in the early 1980s: Metal Finishing Effluent Limitation Guidelines (ELG) (40 CFR Part 433) and the Electroplating ELG (40 CFR Part 413).”
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