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.

NOTICE:

How to Request a Letter of Interpretation

Date	Title	Standard Number
10/21/1992	Various questions on Hazwoper.	1910.120
09/22/1992	Manufacturing facilities with potential for exposure to hazardous waste.	1910.120
09/17/1992	Level of personnel protective equipment (PPE) required for medical personnel treating victims.	1910.120
09/11/1992	Training issues and Hazwoper.	1910.120
09/08/1992	Employees at a hazardous waste site not necessarily related to clean-up.	1910.120
09/03/1992	Questions of Hazwoper in a state plan state.	1910.120
09/01/1992	Various questions on OSHA standards	1910.119, 1910.120, 1910.1030
08/28/1992	Requirement for MSDSs with hazardous chemicals.	1910.1200, 1910.1020
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	Training requirements for maintenance of housekeeping personnel.	1910.120, 1910.1030, 1910.1200(h)
08/12/1992	Hazardous waste clean-up operations.	1910.120
07/28/1992	Spray painting relating to vehicle maintenance operations.	1910.107, 1910.134, 1910.252, 1910.1000, 1910.1200, 1910.94
07/27/1992	Supervisor/management 8-hour training and the 8-hour refresher training.	1910.120
07/21/1992	Refresher training and HAZWOPER.	1910.120
07/21/1992	OSHA's Hazardous Waste Operations and Emergency Response final rule.	1910.120
07/14/1992	Clarification of HAZWOPER to a cleanup operation at a solid waste management unit.	1910.120, 1910.1025
07/10/1992	MSDS labelling requirements.	1910.1200(g)
06/29/1992	Definition of an emergency response.	1910.120