Humboldt State University

Skip to secondary navigation
Skip to content

Department Name

Biology Core Facilities

Hazardous Materials Handling

* HAZARD WASTE TAG (can be printed on paper or Avery 5164 labels).

* HAZARDOUS WASTE (quick reference sheet).


“Waste” is defined in the California Health and Safety Code (§25122) as follows: Any material for which no use or reuse is intended and which is to be discarded. Any recyclable material. Any material that poses a threat to public health or the environment, and which meets either or both of the following conditions: Is mislabeled or not adequately labeled, unless the material is correctly labeled or adequately labeled within 10 days after the material is discovered to be mislabeled or inadequately labeled. Is packaged in deteriorated or damaged containers, unless the, material is contained in sound or undamaged containers within 96 hours after the containers are discovered to be deteriorated of damaged. (page 7).

“Hazardous waste” is defined as follows: A waste or combination of wastes which, because of its quantity, concentration, or physical, chemical or infectious characteristics, may either: a. Cause or significantly contribute to an increase in mortality or an increase in serious irreversible, or incapacitating reversible, illness; or b. Pose a substantial present or potential hazard to human health or environment when improperly treated, stored, transported or disposed of, or otherwise managed. or (b)(2) a. A waste that meets any of the criteria for the identification of a hazardous waste adopted by the department pursuant to Section 25141 [Title 22 regulations]. (page 5).

Okay, so that pretty much covers anything we might generate from batteries and paint to sulfuric acid and mecury compounds. If you have any doubt just ask the stockroom staff prior to generating anything.

What do you do?

It is your responsibility as the end user to properly label all materials you wish to use (see the label page), and all those materials you consider waste (by the definitions above). Remember, improperly labeled materials become waste ten days from discovery.

For additional information see: .

Science B 230 • 1 Harpst St., Arcata, CA 95521 • 707.826.3232 • Contact Us.