24 Hour Hazardous Waste Site Worker

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24 hours


The 24 hour program is required for persons who will be present on a site for a specific limited task (such as, but not limited to: ground water monitoring, land surveying, or geophysical surveying) and who are unlikely to be exposed to chemicals over the legal limits (PELs). It is also appropriate for persons regularly on a site who work in areas which have been fully characterized and pose no health hazard nor any possibility of an emergency developing. A certificate of completion is provided to those who successfully complete the course and pass the final exam. Annual refresher training is required.


  • Overview of Regulations
  • Planning & Practices
  • Respiratory protection
  • Personal protective equipment
  • Air monitoring instruments and techniques

Other Information

Annual Refreshers are required to maintain your certification. You can take the refresher anytime during the 12 months following expiration of your 40-hour certificate, but you may not engage in WSW activities until the refresher is completed. If you fail to complete the required refresher within the grace period, you must retake the initial 40 Hour Course.

29 CFR 1910.120 and Title 8 CCR 5192
Hazardous wastes, when not handled properly, can pose a significant safety and health risk. OSHA recognized the need to improve the quality of the hazardous waste work environment and developed the HAZWOPER standard to provide employers and employees with the information and training necessary to improve workplace safety and health, thereby greatly reducing the number of injuries and illnesses resulting from exposure to hazardous waste.

49 CFR and CCR Title 13
The U.S. Department of Transportation (DOT) regulations for hazardous wastes, including Household Hazardous Wastes (HHW) are set forth in 49 CFR. The State of California Regulations are found in Title 13 of the California Code of Regulations (CCR). Specific rules governing Household Hazardous Waste (HHW) generators are detailed in Title 22 & Title 26.