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Standard Interpretations - Table of Contents
• Standard Number: 1910.120; 1910.1200

November 15, 1990

Mr. Donald F. Bates
Head, Environmental Health & Safety
HUGHES Santa Barbara Research Center
75 Coromar Drive
Goleta, California 93117

Dear Mr. Bates:

This in an update to our response to your inquiry requesting interpretation of OSHA's final standard for Hazardous Waste Operations and Emergency Response (29 CFR 1910.120).

Your letter does not provide sufficient facts upon which to render a determinative answer to your questions whether your "laboratory setting" is covered under the emergency response section of the standard.

If your "laboratory setting" is not within the confines of the treatment, storage and disposal (TSD) operations and deals with incidental release of hazardous substances, it is not considered to be an emergency response within the scope of 29 CFR 1910.120. Such employees, however, must have the proper equipment and training under other OSHA standards such as the Hazard Communication Standard (29 CFR 1910.1200) to handle this type of incident. If the release poses an emergency then you must comply with the training provision of the standard (29 CFR 1910.120(q)). When determining whether a situation constitutes an emergency the key factor which must be considered on a case-by-case basis is the actual or estimated exposure or degree of danger to responders, other workers, neighbors, etc. In order to determine this, other factors such as the size of the spill, the material spilled, and the location of the incident (e.g., confined space) play a significant role.

If the laboratory setting is within the confines of the TSD operations then the training provisions of (p) apply.

The State of California has administered its own occupational safety and health program since 1973, under the provisions of the Occupational Safety and Health Act of 1970. As part of that program, the State is responsible for the enforcement of occupational safety and health standards in the State of California, subject to monitoring by the Federal Occupational Safety and Health Administration (OSHA).

I hope that this helps in your concern.


Gerard F. Scannell
Assistant Secretary

August 3, 1990

Mr. Gerald F. Scannell
Assistant Secretary of Labor
Occupational Safety and Health
Department of Health Services
200 Constitution Ave., N.W.
Washington, D.C. 20001

Dear Mr. Scannell:

I am writing to get an interpretation of 1910.120 to a work situation which I have. My need is brought about (besides my wishes to abide by the regulations) because two different vendors of training have told me two different things. One vendor has told me that I needed the 8 hour training while another has told me that I needed the 24 hour training. I believe the regulations could be interpreted that training under 1910.1200 is the applicable training.

The work situation is this. The work is performed in a laboratory setting within a fume hood. The workers use a 4% solution of Bromine in the job they are doing and when they are through they reduce the Bromine to the Bromide by the use of Sodium Thiosulfate. They do occasionally overfill the container they put this mixture in and are expected to clean it up.

What may complicate things is that we are permitted as a TSD facility. We permitted ourselves as a TSD facility to allow us the latitude to store hazardous waste for more than 90 days and to cover the "treatment" noted above.

We would appreciate your response as to which training is appropriate based upon the scenario presented. We would like an answer by early September.

Thanking you in advance for your efforts in responding to my dilemma.



Donald F. Bates,
Head Environmental Health & Safety


Standard Interpretations - Table of Contents

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