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0 0 Haight Road Tank Removal NOA Project Number: E07174A January 2008 The constituents that may be encountered in soils are petroleum hydrocarbons. In addition, Agricultural chemicals and/or heavy metals may be present in the soil due to past farming practices on the site. Chlorinated pesticides may be present near the structures due to past pest control practices, and lead may be present due to flaking paint. Petroleum constituents, and volatile organic compounds may be present in the original tank area. 6.2 Physical Hazards Field personnel should be aware of and act to minimize dangers associated with physical hazards typically encountered during site activities. These hazards include heat -related illnesses, uneven terrain, slippery surfaces, and lifting. Personnel will walk at all times. Running greatly increases the probability of slips, trips, and falls. 6.2.1 Procedures for Hot Weather Safety problems are common to hot environments because heat tends to promote accidents due to objects slipping from sweaty palms, dizziness, fatigue, tremors, or visual distortions from fogged safety glasses. Accidents appear to occur more frequently in hot environments than in more moderate conditions. Working in a hot environment lowers an individual's mental alertness and physical 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 winter or early spring, heat hazards should not be of particular 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 105' and 110' F; no sweating occurs in about half the victims. The buildup of heat and inadequate cooling can damage brain cells and may