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2.2 Physical Hazards <br /> The principal physical hazards at the site include: <br /> • Temperature stress; <br /> • Sun exposure; <br /> • Severe weather; <br /> • Equipment; <br /> • Noise; <br /> • Slip,trip and fall; <br /> • Excavations and trenches and <br /> • Train traffic. <br /> 2.2.1 Temperature Stress <br /> Autumn in Stockton is expected to be cool, with a mean maximum temperature of 64°F and a <br /> mean minimum temperature of 42.3°F in November (Western Regional Climate Center, <br /> Stockton WSO). <br /> As with excessive heat, cold conditions may also present a health risk to employees during field <br /> activities. Two factors influence the risk potential for cold stress: temperature and wind velocity. <br /> Bare flesh and areas of the body which have high surface area to volume ratios such as fingers,toes, <br /> and ears are most susceptible to wind chill or extremely low ambient temperatures. Procedures that <br /> shall be implemented to prevent or reduce the risk of cold stress include: <br /> • Training to familiarize individuals with cold stress syndrome; <br /> • Implementation of work/rest cycles, as appropriate, to reduce the duration of <br /> exposure to the cold and allow employees to warm up; <br /> Rough&Ready Island 4 Tetra Tech,Inc. <br /> Revised Draft HSP November 18, 1998 <br />