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Radioactive Waste Management
Overviewspacer Potential Mixed Wastespacer RadWaste FAQspacer Useful Linksspacer

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 Olga Ligeti 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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