NMSU is a generator of hazardous waste,
therefore, all used chemical materials intended for disposal are subject to
regulations contained in 40 CFR Part 262 under Subtitle C of the Resource
Conservation and Recovery Act (RCRA).
- Label each container to identify the contents (USE NMSU
WASTE/MATERIAL TRACKING FORM- call EH&S 646-3327 for the form).
- Circle Container Type: Glass, Plastic, Metal, or Fiber.
- Write in Container Size: (250mL, 4L, etc.).
- Circle Chemical State: Solid, Liquid, Sludge, or Gas.
- Write in added chemical names (and their diluent, including water, if applicable),
concentration (%, molarity, or ppm), and their volume in milliliters or liters. If
necessary, make an estimate based on your "knowledge of process". Do not
abbreviate. Do not use chemical notations or structures.
- When no more waste is to be added to container, write in total volume of contents in
milliliters or liters.
- Write in the Generator (name of person completing the form or lab supervisor), Phone #,
Department, Building, and Room #.
- Lower portion is for Environmental Health and Safety (EH&S) use only- Leave Blank.
- If more chemicals need to be listed, use as many extra, separate tracking forms as
- Containers not labeled appropriately will be returned to the generator.
- Secure forms to container with plastic ties or adhesive tape.
- Compatible chemicals may be collected in a single waste container
and individual containers may be packaged in secondary containers according to the
subclasses listed below (not all inclusive). Call EH&S for assistance with extremely
hazardous materials or unknown compatibility.
- Flammables (Non-Halogenated Organic Solvents, Alcohols, Fuels). (Separate Benzene if
- Combustibles (Oils, Resins, Paint), Coolant.
- Inorganic Bases (Sodium Hydroxide, Ammonium Hydroxide). (Do not mix Bleach with
- Halogenated Organics (Chlorinated Solvents: Methylene Chloride, Trichloroethylene).
- Poisons (Insecticides, Herbicides, Carcinogens, Weak Organic Acids, Weak Organic Bases).
- Inorganic Acids (Sulfuric), Inorganic Heavy Metals (Lead/Chromium). (Separate Mercury if
- Compressed Gases.
Always package separately the following high hazard compounds: Cyanide, Sulfide,
Water/Air Reactive, Mercury, Organometallic, Undiluted Organic Peroxides, Strong
Oxidizers, Strong Reducing Agents, Flammable Solids, Strong/Undiluted Amines,
Polymerizables (Monomers), Radioactive, Biohazardous, and Explosive.
- Empty containers must be rinsed a minimum of three times
(TRIPLE RINSED) with
water or an appropriate solvent until less than 3% of the compound is present. Collect rinsate in the appropriate waste container.
The container labels are to be made unreadable by marking out the label with
a heavy permanent marker or affixing an "Empty" sticker over the previous
label. After rinsing, glass containers should be
placed in a glass collection box for regular disposal. If the container is metal, plastic,
or fiber, first puncture the container prior to disposal in the regular trash. If
containers cannot be effectively rinsed, complete a tracking form and turn in as hazardous
- Unknowns are not acceptable. Waste components must be determined
by knowledge of process or analytical method.
- Package glass chemical containers for turn-in in a sturdy transport box with
cardboard separators or packing material to prevent breakage. If you need additional
boxes, notify EH&S when calling in a pick up request. Only combine compatible waste
containers in a single transport box. Do not seal boxes, EH&S Personnel will inspect
paper work and hazardous waste containers before transport.
- At any one time, departments may accumulate up to a maximum of
55 gallons of waste or one quart of Acutely Hazardous Waste in a designated
Waste Accumulation Point. The storage containers must be closed (finger
tight) and under the generator's control. See
NMSU Waste Accumulation Point
Inspection checklist at
- After tracking forms are completed, call EH&S (646-3327) to schedule removal of
chemicals. Containers should be called in for pick up when 75% full to comply with EPA
regulations. Detailed hazardous waste training is provided by EH&S Staff. Please call
for dates and times or visit our web site at safety.nmsu.edu.