The soil classification system.
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. This 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. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.
October 28, 1993
Ms. Janet Fox
Director, Industrial Hygiene and
Safety Services Con Edison, Inc.
30 Flatbush Avenue
Brooklyn, New York 11217
Dear Ms. Fox:
Your letter of July 16 to Mr. Roger Clark requesting information and clarification of the Occupational Safety and Health Administration (OSHA) soil classification requirements for excavations has been referred to the Office of Construction and Maritime Compliance Assistance for response. I apologize for the delay in responding to your inquiry.