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1 <br /> Individuals vary in their susceptibility to heat stress. Factors that influence an individuals <br /> tolerance for heat include physical fitness, diet, alcohol/drug use, sleeping habits, acclimation, <br /> genetics, medical condition, age and weight. <br /> Cold stress is not an anticipated concern. However, workers should be aware that most cold- <br /> related worker fatalities have resulted from failure to escape low environmental air <br /> temperatures, or from immersion in low temperature water. The single most important aspect <br /> of life-threatening hypothermia is a fall in the deep core temperature of the body. <br />' In the event that the weather becomes unusually cold (or temperatures fall below 45T) <br />' project workers should be protected from exposure to cold so that the deep core temperature <br /> does not fall below 36 degrees Celsius (°C). Lower body temperatures will very likely result <br /> in reduced mental alertness, reduction in rational decision making, or loss of consciousness <br />' with the threat of fatal consequences. <br />' 3.2.8 Fire <br /> During dry weather, the potential for fire exists in any unpaved grassy perimeter regions of <br /> the site. Where VOC levels are high, both a fire and explosion hazard exist. Sparks from <br /> operating equipment, or even contact with hot catalytic converters can cause ignition. <br /> 1 3.2.9 Environmental Hazards <br /> Poisonous or stinging insects, spiders and/or snakes may be a concern for project personnel <br />' during sampling and other site activities. Disease vectors, such as ticks, may also be present. <br /> Poison oak or other noxious flora may be present on or near the site, and can cause severe <br />' skin irritation on contact. Physical hazards are also posed by native vegetation in the area, <br /> including thistles and other thorny weeds. <br /> 1 <br /> 1 <br /> 1 <br /> M=5-W94MsrJ%-M" 3-4 <br />