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Sierra Chemical Co. Hazardous Waste Management Plan 5.4 Empty Containers Empty containers may be considered hazardous waste if they are not managed appropriately. For containers that have been utilized for the storage of acute hazardous waste (P-listed waste),the container must be triple rinsed to be considered empty and no longer hazardous waste. For non-acute hazardous waste(U-listed, F-listed, K-listed and characteristic waste)the container is considered empty if: • All waste has been removed that can be removed • Less than 1 inch of the residue remains in the container • No more than 3% by weight of the total capacity of the container remains in the container sized less or equal to 110 gallons; or • No more than 0.3% by weight of the total capacity of the container remains in the container sized 110 gallons. If the containers are not"empty" per the requirements listed above,they must be treated as hazardous waste. Containers should be identified as"empty"to ensure proper disposal. Empty labels are provided in Appendix C. 5.5 Contaminated Rags and Absorbents Industrial rags, also referred to as wipes and absorbents, are typically constructed of absorbent fabric or a related material and used for general equipment cleaning to clean oil,grease and dirt from parts. Whether soiled wipes, absorbents or rags are considered a hazardous waste depends on the type of residues and materials remaining on the absorbent after use.As with any other waste, it is up to the generator to determine the regulatory status of each waste generated and manage them appropriately. Currently,Sierra Chemical Co. has determined that rags and absorbents used to clean up spills involving hazardous materials, including oil are hazardous wastes. Federal regulations listed in 40 CFR and CA specific regulations listed in 22 CCR, define materials that are contaminated with one or more listed wastes or listed by the state of CA as a "non-RCRA" hazardous waste, as hazardous waste and require that they be disposed of in compliance with all applicable laws and regulations. 5.6 Aerosol Cans An aerosol can typically become waste when 1)the can has lost it's spray nozzle before the contents have been completely used, 2)the aerosol can run out of propellant before the contents have been completely used,3)the generator no longer has a use for that product, or 4)the product has been completely used and the empty can remains. Aerosols cans pose a unique hazardous waste determination problem due to the fact that they consist of three materials,each of which could be classified as a hazardous waste: • The can itself; • The liquid product contained in the can (characteristic or listed);and • The gaseous propellant(reactive,that is, it is capable of detonation or explosive reaction if it is subjected to a strong initiating source or it is heated under confinement). They can be managed in one of two ways: Prepared By: Issue date: Replaces: Page: ACT Environmental Services, Inc. May 12,2016 March 4,2016 13 of 27