Trench Rescue Awareness Course Trench Rescue Awareness Course Number Spec Rescue/L2 COURSE DURATION: 16hrs Level Basic Standard NFPA 472, OSHA 29, CFR 1910.120, EPA 40 and DOT Delivary Method Classroom REQUEST INFO Description As an introductory general awareness course, personnel operating at this level will be able to perform size up and con- trol hazards at a trench emergency.