567—134.23 (455B) OSHA safety requirements. All licensed individuals and companies regulated under Part C of this chapter shall conduct their work as required by OSHA safety requirements defined under 29 CFR § 1910 (2006). OSHA standards apply whenever flammable, combustible, or hazardous materials are present, especially during the following activities:
	  1. 	 Excavating, placing underground storage tank systems in excavations, and ballasting underground storage tank systems with flammable, combustible, or hazardous materials.
	  2. 	 Purging, cleaning, and removal of underground storage tank systems which have contained flammable, combustible, or hazardous materials.
	  3. 	 Testing as a part of an installation or after the system has been placed in service.
[ARC 7946B, IAB 7/15/09, effective 8/19/09]