This section of the virtual tour covers the topic of hazardous waste management in an art department, specifically associated with etching waste. A typical etching acid bath is equipped with an exhaust hood to remove the acid vapors. Acid neutralizing material should be available in the event of an acid spill. The bath should be placed in a vessel equipped with a cover to reduce the amount of vapors emanating into the work environment. The baths are drained when not in use and the waste disposed of. Safety glasses and gloves should be worn when etching is performed to reduce the potential for chemical contact with skin and eyes. As previously discussed, acids and bases used in etching are corrosive materials; they must not be poured down the drain. Waste acids such as nitric acid and ferric chloride solution may also contain metals such as zinc and copper, which are regulated by state and federal hazardous waste regulations.
As you may know, the federal Resource Conservation and Recovery Act (RCRA) and the implementing federal regulations at 40 CFR Parts 260-272 govern hazardous waste management. Many states also have their own, sometimes more stringent, regulations. Not only is hazardous waste management one of the most common environmental issues at college and university campuses, but the specific requirements for hazardous waste (RCRA) are so numerous, the tour has, as appropriate, split the content into three areas as follows:
- RCRA (Storage/Disposal)
- RCRA (Recordkeeping)
- RCRA (Training/Other)
The overall intent of RCRA is to manage hazardous waste from generation to ultimate disposal. This "cradle to grave" approach has resulted in regulations governing hazardous waste generators, transporters, and treatment, storage, and disposal (TSD) facilities. Given that most university facilities do not themselves transport hazardous waste to an off-site hazardous waste disposal facility, treat hazardous waste, or operate a hazardous waste disposal facility, the regulations governing these activities are not addressed in the tour. More typically, your facility would generate, store the waste and then have a contractor transport the waste off site for disposal. The specific hazardous waste management requirements a facility must follow depend on the facility's generator status and the types of waste it produces. In other words, the generator status of the college or university will determine the type of requirements individual departments may need to follow.
Most colleges and universities have Satellite Accumulation Areas. A Satellite Accumulation Area is a designated area near a process or location that generates hazardous waste where wastes are stored until they are moved to a central Hazardous Waste Accumulation area. Federal regulations allow generators to store up to 55 gallons of hazardous waste or one quart of an acutely hazardous waste in the satellite accumulation area. There is no limit on the amount of time to accumulate the waste. However, once a container is considered full, the generator has 72 hours to have the container transferred to the institution's hazardous waste storage area. From there the waste is shipped to a licensed hazardous waste treatment, storage or disposal facility.
Continue further along the tour and learn more about RCRA storage/disposal requirements.