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C� U 'i 11.3 Flammable Vapors` Presence of flammable vapors can pose a potential fire hazard and health hazard. Hazard reduction procedures include monitoring the ambient;air with an OJLEL meter. If the LEL reading exceeds 20%, leave the site immediately and contact the Fire Department. 11.4 Oxygen Enriched/Deprived Atmospheres {' Atmospheres that contain a level of oxygen greater than 23% pose an extreme fire hazard (the usual ambient oxygen level is approximately 20.5.1/6). All personnel encountering atmospheres that contain a level of Oxygen greater than 23% must evacuate the site immediately and must notify the Fire Department. h 11.5 Noise When exposure to sound levels in the field personnel's ear ("A") scale, slow response is likely to be in excess of 90 dbl for greater than 5 minutes or 85 dbl for greater than 30 minutes, noise protection shall be worn. Thus, a sound level meter shall be present if these levels are likely to occur. 11.6 Surface and Equipment Contamination Contact with contaminated surfaces, or surfaces suspected of being contaminated, should be avoided. This includes walking through, kneeling or placing equipment in puddles, mud, discolored surfaces, or on drums and other containers. Eating, smoking, drinking and/or the application of cosrrletics is prohibited on this site in the immediate work area. This reduces the likelihood of contamination by ingestion. 11.7 Exposure - Heat Stress I Since climatic changes cannot be avoided, work schedules will be adjusted to provide time intervals for intake of juices, juice products and water in an area free from contamination and in quantity appropriate for fluid replacement. Heat stress may occur even in moderate temperature areas and may present any or all of the following: • Heat Rash: Result of continuous exposure to heat, humidair and Jchafing clothes. Heat rash is uncomfortable and decreases the ability to I tolerate heat. AJ& Avalon Environmental Consultants 9627-001-6