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Site Health and Safety Plan 19133 East Liberty Road, Clements, California August 16, 2022 Page 20 Sharp Environmental Technologies, Inc. • Additional precautions (e.g., added shoring bracing or a flatter slope angle) should be utilized whenever site conditions indicate that they are needed to prevent cave-ins. • Excavations should be inspected by a competent person daily, and after any event (e.g., rainfall) which may increase the likelihood of cave-in. If inspection indicates the potential for a cave-in, all work should cease until appropriate precautionary measures are taken. Trenches which (1) will not be entered by workers; and (2) will be immediately backfilled (e.g., for permeable treatment walls) are exempted from the requirements listed here. When the procedures outlined above are followed, trenching can be a useful control on a hazardous waste site. It should be emphasized that construction hazards must be avoided as much as chemical exposure hazards. 5.5.16 Confined Space Entry This SHSP does not cover confined space entry. A separate site-specific confined space hazard plan must be prepared and implemented for any confined space work. The following is provided for informational purposes only. Confined spaces may be described as having, but not being limited to, the following characteristics: • Is large enough to permit a worker to enter and perform work; • Has limited or restricted means of entry and exit; and, • Is not equipped, designed, or intended for continuous human occupancy. Confined spaces become permit-required confined spaces if any one of the following exists: • Contains or has the potential to contain a hazardous atmosphere; • Contains or has the potential to contain a material that could engulf or entrap a worker; • Is configured such that a worker may become trapped, disoriented, or asphyxiated by wall configurations or smaller cross sections; and, • Contains other safety or health hazards, such as energized equipment or moving parts. Before workers may enter a permit-required confined space, an entry permit must be completed and approved by the project manager. All permit requirements for entry must be met (see Title 8 CCR sections 5157, 5158 and 5159 for details and guidance). 5.5.17 Elevated Work Platforms When working at heights that expose workers to falls of greater than 6 feet, especially on sloping roofs and elevated platforms, the requirements of 8 CCR 1670 will be observed. Approved fall protection devices will be required. Elevated work platforms will be constructed, used, and maintained in accordance with Articles 21 and 22 of the Cal/OSHA Construction Safety Orders. Scaffolds and hoisting lines will be inspected daily by a competent person. All defective equipment may not be used for any purpose and will be replaced immediately.