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Fact Sheet, December 2005 Department of Requirements for Generators of Toxic Substances Control Treated Wood Waste (TWW) What is Treated Wood Waste (TWW)? TWW is wood commonly used in ground or water contact applications that has been removed from service. This wood is typically treated with preserving chemicals that Our Mission is protect the wood from insect attack and fungal decay during its use. Examples include fence posts, sill plates, landscape timbers, pilings, guardrails, and decking. to provide the What are the Health and Environmental Hazards? highest level of TWW contains hazardous chemicals that pose a risk to human health and the environment. Arsenic, chromium, copper, creosote, and pentachlorophenol are among safety, and to the chemicals added to preserve wood.These chemicals are known to be toxic or carcinogenic.Harmful exposure in estion of TWW to these chemicals rticulate result from sawdust and smoke)contact lth protect public TWW, or from inhalation g p (e.g., health and the What are the Hazardous Waste/Alternative Management Standards environm (AMS)?ent Because TWW contains hazardous chemicals, at elevated levels, it is subject to California's Hazardous Waste Control Law. The Department of Toxic Substances froyrt toxic Control (DTSC)has developed alternative management standards(AMS)for TWW that harm. are based upon full hazardous waste requirements but are adjusted for the unique circumstances associated with TWW. The AMS is in California Code Regulations(Cal. Code Regs_)title 22, division 4.5, chapter 34. In summary,AMS lessen storage requirements,extend accumulation periods, allow shipments without a hazardous waste manifest and a hazardous waste hauler, and allow disposal at specific non-hazardous waste landfills. The AMS simplify and facilitate the safe and economical disposal of TWW. (Note-TWW that is removed from utility services or is a RCRA hazardous waste is not eligible for AMS.) .---; What are the Handling and Disposal Requirements for TWW? The AMS, which want into effect on July 1,2007, are intended to ease regulatory burdens.Although hazardous waste generators are required to properly classify their laboratory anal sis, generators of TWW can presume their waste through knowledgeor ry Y state of California TWW is hazardous waste and avoid expensive laboratory testing. Generators can then manage their waste in accordance with the AMS, including disposal at certain non- hazardous waste landfills.Upon acceptance at these certain landfills,the TWW, at that point,becomes non-hazardous waste pursuant to Health and Safety Code section 25150.8. Specific generator requirements for households, small business, and all others are presented in the following sections: California Environmental Protection Agency