Contents: Wastes from production of chlorinated aliphatics (treatment standard); Inorganic pigments (support standard, background document corrections, and sampling frequency); Acrylonitrile (wastewater definition, acrylonitrile standard, performance data, numerical standard vs. wet air oxidation method, and data request); Still bottoms from benzal chloride (nickel standard and organic standards); Spent antimony catalyst (no comments were received for this waste code); WW treatment sludges from manufacturing, formulating, and loading of lead-based initiating compounds (treatment standard, stabilization technology, deactivation technology, waste minimization, and analytical data); Ammonia still lime sludge (no comments were recieved for this waste code); Electric arc furnace dust (wastewater treatment standard, high temperature metals recovery and residuals, treatment technologies for nonwastewaters, and availability of high temperature metals recovery); Emission control dust/sludge from secondary lead smelting (treatment standard).