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Potential Mixed Waste Items

If you work with any of the material on this list, be aware that if the material becomes radioactive, it can be a mixed waste when discarded.

The following are common hazardous materials that may be found at SLAC. If these materials become radioactive they may become a mixed waste. Please note that this list is not all-inclusive. If you are uncertain about a material and whether it could become a mixed waste, please call Joe Christy (x2823) or Olga Ligeti (x2610) for assistance.)

  • Acids and Bases
  • Asbestos (floor/ceiling tiles, gaskets, insulation, sheet linoleum, shingles. See SLAC ES&H Manual, Chapter 27, "Asbestos")
  • Batteries (dry cell, lead-acid, lithium, nickel-cadmium, wet cell)
  • Brass and Bronze
  • Carcinogens
  • Cleaners, degreasers, and solvents (acetone, alcohol, Dynasolve®, methylene chloride, toluene, trichloroethane)
  • Corrosion Inhibitors
  • Corrosive liquids (pH < 2 or > 12.5)
  • E-Waste (Audio/visual equipment, cathode ray tubes, CRTs, computers, telephones)
  • Flammable liquids (flashpoint < 140°F)
  • Fuels and fuel filters (diesel, gasoline)
  • Laboratory Chemicals
  • Lead (batteries, brass, bronze, circuit boards, E-waste, paint, shielding)
  • Light bulbs: incandescent (metallic lead in bulb base) and fluorescent (possible mercury inside tube).
  • Lubricants
  • Mercury (batteries, fluorescent lamps, pressure-vacuum gauges, switches, thermometers, thermostats)
  • Oil and Grease (bearings, capacitors, fluorescent lamp ballasts, motors, oil contaminated rags/cloths, oil filters, oily water)
  • Paint, Paint Chips, Painted Items, Paint Remover, Paint Thinner
  • Poly Chlorinated Biphenyls, PCBs (capacitors, fluorescent lamp ballasts, transformers)
  • Solder and soldered items (circuit boards, compact fluorescent lamps, copper piping, E-waste, incandescent lamps)
  • Reactives (sulfide or cyanide bearing waste, water reactives)
  • Any item containing or exposed to hazardous materials (rags, absorbents, empty containers).
  • Any item containing one or more of the following toxic metals:
    Antimony* Cobalt* Selenium
    Arsenic Copper* Silver
    Barium Lead Thallium*
    Beryllium* Mercury Vanadium*
    Cadmium Molybdenum* Zinc*
    Chromium Nickel*  

    *Potentially hazardous if in a friable, powdered, or finely divided state.



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