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Revised: 01/31/2023 3 Job Steps Hazards Actions to Eliminate or Minimize Hazards RAC 3. Trench/ Excavate - Utilities - underground (power, natural gas, water, etc.) - Contact with underground utilities could cause injury to worker and damage to property or equipment. - Excavation Wall Collapse - Struck by Equipment - Inhalation and contact with Hazardous Substances - Hot weather - Cold weather - Strains from use of tools, such as shovels, could occur - Heavy equipment hazards could be present - Workers could fall into excavation - Workers could be injured if they enter excavations that are not protected as required by Cal-OSHA and EM 385-1-1, Section 25 1. Identify all utilities around the site before work commences using historical maps, survey maps, markin outs, etc. Cease work immediately if unknown utility markers are uncovered. Use passive digging techniques such as hand digging or air knifing if working within 2 feet of a known utility. 2. Use a designated spotter when excavating difficult to see areas. 3. Construct diversion ditches or dikes to prevent surface water from entering excavation. Verify proper drainage of area adjacent to excavation. Collect ground water/rain water from excavation and dispose of properly. Keep excavated soil at least 2 feet away from the edge of the excavation; prevent excessive loading of the excavation face. Provide sufficient stairs, ladders, or ramps when workers enter excavations over 4 feet in depth. Place ladders no more than 25 feet apart laterally. Treat excavations over 4 feet deep as confined spaces. Complete confined space permit entry procedure. Monitor atmosphere for flammable/toxic vapors, and oxygen deficiency. Slope, bench, shore, or sheet excavations over 5 feet deep if worker entry is required. Assign a competent person to inspect, determine proper soil classification, proper sloping, the correct shoring, or sheeting. Inspect excavations (when personnel entry is required) daily, or any time conditions change. Provide at least two means of exit for personnel working in excavations. Should competent person find evidence of a situation that could result in a possible cave-in, indications of failure of protective systems, hazardous atmospheres, or the other hazardous conditions, exposed employees shall be removed from the hazardous area until the necessary precautions have been taken to ensure their safety. 4. Wear reflective hi-vis vest when exposed to vehicular traffic, Isolate equipment swing areas, Make eye contact with operators before approaching equipment, Understand, review and use hand signals. 5. Provide workers proper skin, eye, and respiratory protection based on the exposure hazards present. Review hazardous properties of site contaminants with workers before operations begin. Use light water spray to moisten soil and prevent fugitive dust emissions. 6. Monitor workers for Heat/Cold stress. Provide fluids to prevent worker dehydration. Establish work/rest schedule. 7. Maintain steady pace when using tools and take adequate rest periods. If possible, rotate tasks among the workers. Use appropriate tools for the task and maintain tools in good condition. 8. Equip all heavy equipment on this project with rollover protection systems and back up alarms. Stay clear of moving equipment, unless necessary. If working near equipment, workers must be in visual contact with the operator. Inspect all equipment daily, before use, to ensure that proper maintenance is being performed. Make eye contact with the operator; heavy equipment has right of way. Workers will not work under any equipment or loads. 9. As required by EM 385-1, Fall Protection, if the excavation is 6 feet or greater in depth, workers must be at least 6 feet from the edge of the excavation. If workers must be closer, they must use personal fall protection (full body harness, lanyard or retractable life line, anchorage point). If excavation is less than 6 feet deep, workers should stand at least 2 feet from the edge of the excavation. 10. Workers can only enter excavations that are directly supervised by a competent person identified above. The Competent person must verify that the excavation is sloped or that an approved shoring system is installed per specifications. Each worker who enters can enter only after getting verbal approval from the competent person who is physically present at the excavation. H NC-25-1137 Tiwana & Sons 1210 East Hammer Lane, Stockton, CA 95210