WSC2

State-only solid corrosive waste

Designation

Dangerous Waste

Waste Number

WSC2

Regulation

WAC 173-303-104

State-Only Corrosivity

Washington regulates solid corrosive wastes that the federal D002 characteristic (liquids only) does not capture.

WSC2 is a state-only designation — the stream may carry federal RCRA codes in addition, or be dangerous waste in Washington alone.

Other Washington state-only codes

WT01Toxic dangerous waste designated as extremely hazardous waste (equivalent concentration >= 1%)WT02Toxic dangerous waste designated as dangerous waste (equivalent concentration below 1% but above 0.001%)WP01Halogenated organic compound persistent dangerous waste, extremely hazardous waste category (HOC >= 1%)WP02Halogenated organic compound persistent dangerous waste, dangerous waste category (HOC 0.01% to 1%)WP03Polycyclic aromatic hydrocarbon persistent dangerous waste, extremely hazardous waste category (PAH >= 1%)WPCBState source-listed PCB wastes per WAC 173-303-9904

Where can a WSC2 stream go?

Recognized recovery routes for this waste family, ranked by typical recovery tier. Which route fits depends on your specific stream — composition, volume and region.

Acid / alkali regeneration

Medium recovery

Spent acids and caustics are regeneration candidates: spent pickling and etching liquors can be processed for acid recovery or metal-salt by-products, depending on free-acid strength and dissolved metal load.

40 CFR 261.1(c)(4) — reclamation

On-site elementary neutralization

Low recovery

Streams hazardous only for corrosivity can be treated in an elementary neutralization unit — a recognized unit type that manages the characteristic without a full treatment permit.

40 CFR 260.10 — definitions

These are the typical routes for state-only corrosivity. Your stream's actual options depend on its composition and where it sits.

Get the ranked options for your stream

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