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1 ,7 sb properties (Teichert and RMC Lonestar) create intermittent noise levels. This results in occasional moderate to high ambient noise levels. Noise can interfere with worker communications and can be annoying to the workers. A - prolonged exposure to excessive noise levels can overtime, permanently destroy hair- like receptors located within the inner ear causing hearing loss. Noise intensity/loudness is measured in decibels [dBA] using the "A"weighted scale. The "A" scale is used for compliance purposes because it best approximates the ears response -) to noise Some of the dangerous exposure levels are: .i1 90 dBA over an 8-hour exposure time - risk of hearing loss; 7 100 dBA over 2 hours - risk of hearing loss; 100-120 dBA for any length of time is considered dangerous; t 120-130 dBA- usually the pain threshold for most individuals; 7 140+ dBA single exposures can cause permanent hearing loss. -' According to CaVOSHA, the action level for noise is 85 dBA and the PEL is 90 dBA based upon an 8-hour TWA. If the action level is exceeded, a hearing conservation program will be reQuired, which includes: monitoring, audiometric testing, hearing protection and training. The potential for elevated noise exposure always exists when operating or working around heavy equipment. When loud noise is present or normal -i conversation becomes difficult, hearing protection in the form of ear plugs, or :} equivalent, will be reQuired. 2.4.2 Heat Stress Heat stress is considered to be one of the primary physical hazards which may be encountered on site. In order to mitigate the effects of potential heat stress, a proactive approach will be taken. The main emphasis will be placed upon education of the workers and good communication between the workers and management personnel. All on-site personnel will be made familiar with the symptoms of heat stress in themselves and others, and the conditions during which it may occur. J :. Heat stress symptoms may include elevated heart rate, nausea, headache, lightheadedness, lack of coordination or decreased job performance and slurred speech. Where site conditions warrant, a qualified person will monitor for heat stress and implement work/rest regimens, as necessary. Workers will have scheduled breaks every few hours in a shaded area. 2.4.3 Slips, Trips and Falls There is a potential for physical hazards resulting from tripping over metal objects, tools, hoses, and other eQuipment laying on the ground as well as uneven terrain. Improper use and/or maintenance of equipment and tools is another potential source of -= physical hazards on site. These sorts of physical hazards must be avoided through Sb Environmental Services,LLC O October,2003 California Integrated Waste Management Board Site Specific Health and Safety Plan Page 23 of 62 Tracy Tire Fire Remediation Project