ARCHIVED REPORTS_REVISED DRYWELL CLOSURE AND INVESTIGATION WORK PLAN

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' Neil O.Anderson &Associates HASP Page 5 of 21 ' March 18, 2014 performance. Increased body temperature and physical discomfort promote irritability and other emotional states that can cause workers to overlook safety procedures and divert their attention from hazardous tasks. ' Because the field work is planned for late summer, heat hazards may be of concern for the project. ' 6.2.2 Health Problems Heat stress, heat-related illness, and heat-related disorders are three terms used ' interchangeably to express health problems associated with exposure to hot environments. Heat stress is the term used herein. ' Excessive exposure to a hot work environment can bring about a variety of heat-induced disorders. Several of the more common disorders, in decreasing order of severity, are briefly described below: Heat Stroke ' Heat stroke, a true life-threatening emergency, has mortality ranging from 20% to 70%. Heat stroke is sometimes called sunstroke, although the sun is not required for its onset. The condition results when the heat-regulating mechanisms of the body break down and fail to cool the body sufficiently. The body becomes overheated, with temperature rising to between 1050 and 110° F; no sweating occurs in about half the victims. The buildup of heat and inadequate cooling can damage brain cells and may cause permanent disability or death. Central nervous system dysfunction is virtually universal at temperatures higher than 113° F. It first becomes ' apparent as confusion, lethargy, or agitation and may progress to seizure and coma. There are two basic kinds of heat stroke. Classic heat stroke, in which people lose the ability to ' sweat, generally affects inactive people who are in hot environments. Exertional heat stroke, in which victims retain the ability to sweat, usually occurs during periods of physical exertion and muscle stress. ' Heat stroke commonly occurs during times of high temperatures combined with high humidity and low wind velocity. Some signs and symptom of heat stroke include the following: Temperature of 105° F or higher Hot, reddish skin; skin can be wet or dry, since approximately half of all heat stroke ' victims sweat profusely Initially constricted pupils, later becoming dilated • Tremors Mental confusion and anxiety Initially deep, rapid breathing that sounds like snoring; breathing becomes shallow and weak as damage progresses Headache Dry mouth "004 ' 902 Industrial Way•Lodi,CA 95240-209.367.3701•Fax 209.333.8303 02014 Neil O.Anderson&Associates,Inc.