Letters of Interpretation | Occupational Safety and Health Administration

Letters of Interpretation

OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed.

Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.

These letters of interpretation and the standards they address may not apply to OSHA State Plans. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or additional requirements. Please see OSHA-approved State Plans for more information.

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How to Request a Letter of Interpretation

Date	Title	Standard Number
08/27/1992	HAZWOPER training requirements.	1910.120
08/18/1992	Use of EPA's Health and Safety Plan (HASP) computer program.	1910.120
08/14/1992	Training and medical requirements for hazardous waste workers.	1910.120
08/12/1992	Hazardous waste clean-up operations.	1910.120
08/12/1992	Training requirements for maintenance of housekeeping personnel.	1910.120, 1910.1030, 1910.1200(h)
07/27/1992	Supervisor/management 8-hour training and the 8-hour refresher training.	1910.120
07/21/1992	OSHA's Hazardous Waste Operations and Emergency Response final rule.	1910.120
07/21/1992	Refresher training and HAZWOPER.	1910.120
07/14/1992	Clarification of HAZWOPER to a cleanup operation at a solid waste management unit.	1910.120, 1910.1025
06/29/1992	Definition of an emergency response.	1910.120
05/13/1992	Refresher training, supervisor training and the hazardous waste standard.	1910.120
05/11/1992	Post closure operations and maintenance activities; training requirements of HAZWOPER.	1910.120
05/08/1992	Interface of 1910.120 and other standards.	1910.120, 1910.38(a)
05/05/1992	Site observations and writing reports and findings at hazardous waste sites.	1910.120(e), 1910.120(a)
04/07/1992	EPA Fact sheet "Emergency Responder Agreements".	1910.120(q)
04/02/1992	Vehicle operations on hazardous waste sites	1910.120
03/31/1992	Medical personnel exposed to patients contaminated with hazardous waste.	1910.120
03/27/1992	Towing operators skilled in operating equipment for emergency responses.	1910.120
03/25/1992	Clarification of cleanup operation identified by a governmental body as an uncontrolled hazardous waste site.	1910.120
03/24/1992	Texaco emergency response assistance team.	1910.120