EPA-Listed Hazardous Waste
The first step in identifying the potential hazardous wastes that may be generated in a UF lab is for laboratory workers to familiarize themselves with the three pertinent EPA lists of hazardous chemicals: the F-list, which is a collection of spent solvents common in our laboratories; and the P-list and the U-list, which are commonly-used commercial chemical products. Unused supplies of these chemicals must be turned over to EH&S for disposal once labs are finished using them. Additionally, laboratories which generate wastes containing any concentration of a chemical named on these three lists must manage those wastes as a hazardous waste and dispose of them through EH&S. A list of some of the most common EPA-listed chemicals follows.
|Common F-Listed Solvents||Common U-Listed Chemicals||Common P-Listed Chemicals|
|Xylene||Acrylamide (* gels not included)||Epinephrine|
|Methylene Chloride||Formic Acid||Osmium Tetroxide|
|Toluene||Hydrofluoric Acid||Sodium Azide|
|Methyl Ethyl Ketone||Methyl Methacrylate||Strychnine|
Aqueous Stock Solutions
The rules for listed wastes also extend to any unused aqueous stock solutions that contain listed chemicals. For example, many labs utilize solutions which are 3-4% Acetone or Methanol (both listed solvents) in water. Even at these low concentrations, the solution must be managed as a hazardous waste and is prohibited from drain disposal. This rule applies whether the solution was used during a research protocol, or even simply for general purpose cleaning. Another example of this waste type is Sodium Azide solution, which is often used as a preservative in biological laboratories. Sodium Azide is a P-listed chemical, so all unused stock solutions containing Sodium Azide must be collected and disposed of as hazardous waste through EH&S.
Solid Wastes Contaminated with Listed Chemicals
Finally, solid wastes (gloves, pipette tips, weighing papers, filters, spill cleanup materials, etc.) which are contaminated with listed chemicals must also be managed as hazardous waste. Labs which generate these types of solid wastes are required to manage and dispose of them as hazardous wastes. These should be collected separately from the liquid wastes generated in the lab. EH&S provides containers for solid waste collection; a delivery request may be submitted by calling the Chemical and Radioactive Waste Disposal group at 392-8400.