2022-07-23_GENERAL DOCUMENTS - M1989074

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compaction, superimposed loads and vibration can affect the stability of a trench excavation. Support systems shall be planned and designed by a qualified person. • Daily inspections shall be made and trenches shall be re-inspected after every rainstorm or other hazard increasing event. The stability of the soil at the top of the trench or 6 • Excavation shall be reassessed where personnel may be working and/or equipment positioned and working. Excavated materials (spoils) shall be stored at least 2 feet from the edge of the excavation, or otherwise retained, in order to prevent this material from falling into the excavation. Noise and Vibration Heavy equipment and other construction activities may produce noise levels above acceptable standards. High noise levels can contribute to hearing loss as well as interfere with communication between workers. Exposure to noise can be expected when working around equipment and machines such as heavy earthmoving equipment, jack-hammers, etc. All job classes and/or personnel that are suspected of having potential noise exposures above the OSHA action level (85 dBA TWA) will be monitored. Until all noise sources have been properly characterized, all personnel shall wear hearing- protective devices (i.e., either ear plugs or muffs) within 100 feet of such operating equipment, or when noise levels interfere with normal speech. Hand signals will be established by on-site personnel, as appropriate, to facilitate communications while involved in high-noise activities. Heavy equipment and other construction activities may also provide persistent vibration. Traffic and General Public Due to the location of the site people will be present while work is being done. All precautions will be taken to ensure the safety of everyone on site. Adverse Weather Conditions (snow, hail, sleet, lightning, etc.) and Temperature Extremes (heat and cold stress) Adverse weather conditions are important considerations when planning and conducting site operations. Hot or cold weather can cause physical discomfort, loss of efficiency, and personal injury. Whenever ambient air temperatures are below 50°F or above 70°F the following protocols will be observed. When air temperatures exceed 70°F, the following general practices will also be followed: • Site workers should consume sufficient fluids to remain hydrated; • In hot weather, activities which will require the use of protective clothing or respiratory BEC Mine Closure Project August 8, 2022