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including the quantity of waste removed, the sump (3) Each container and portable tank in which or collection system and the date and time of removal. hazardous waste is accumulated must be labeled with If hazardous waste is accumulated in containment the following information: buildings,the generator must comply with Title 22, (a) composition and physical state of the waste; Cal. Code Regs., division 4.5, chapter 15,article 29 (b) statement or statements that call attention (Containment Buildings), and obtain a professional to the particular hazardous properties of the waste engineer certification that the building complies with (e.g. flammable,reactive); and the design standards specified in Section 66265.1101. (c) name and address of the generator. (Section The engineer certification is required prior to 66262.34.) operating the unit and must be placed in the facility's operating record. (Section 66262.34 (a)(1)(C)). (4) Containers and tanks used by the generator to collect or consolidate wastes initially accumulated in (7) The owner or operator of a containment building other containers or tanks are subject to the same must maintain the following records at the facility: labeling requirements.The initial accumulation and (a) a written description of procedures to ensure "90-day period" dates on the "collection" container/ that each waste volume remains in the unit for no tank must be the oldest of the initial accumulation more than 90 days,a written description of the waste and "90-day period" dates from the various generation and facility management practices showing containers/tanks emptied into the "collection" that they are consistent with the 90 day limit, and container/tank.This may require dates to be changed documentation that the procedures are complied with if wastes from"older" containers/tanks are added to (Section 66262.34 (a)(1)(C)(1));or the "collection"container/tank. (b) documentation that the unit is emptied at least once every 90 days. (Section 66262.34 (5) In some cases,containers are continuously reused (a)(1)(C)(2)). for accumulation of the same waste stream; e.g., drums used to initially accumulate waste which when (8) A generator accumulating in tanks or containers full are emptied into larger "collection" containers. is exempt from articles 7 and 8 in Title 22, Cal.Code "Recurring use"labels may be used on such contain- Regs., division 4.5, chapter 15, except Sections ers to revise the initial accumulation and "90-day 66265.111 (Closure Performance Standards) and period" dates (without having to change the other 66265.114 (Decontamination). (Section 66262.34 labeling information).If the container is emptied at (a)(1)). least once each day,the word "daily" may be used in For a more detailed explanation on accumulation the date area of the label. requirements, read DTSC's "Accumulating Hazardous Wastes at Generator Sites" Fact Sheet E. EMERGENCY PROCEDURES/ (January 2002). CONTINGENCY PLANS D. LABELING/MARKING (1) ALL GENERATORS All generators must comply with these requirements (1) The date upon which each period of accumulation regarding preparedness and prevention: begins must be clearly marked and visible for (a) All operations must minimize the possibility inspection on each accumulation unit. (Section of a fire, explosion or any unplanned release of 66262.34.) hazardous waste or hazardous waste constituents to air, soil,or surface water that could threaten human (2) While being accumulated on site,each generator health or the environment. (40 C.F.R.section 265.3 1, tank or container must be labeled or clearly marked Section 66265.31) with the words, "Hazardous Waste." (Section (b) A generator's site must be equipped with the 66262.34.) following, unless it can be demonstrated to DTSC