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Utility Lines <br /> The Underground Service Alert (USA) will be contacted a minimum of 48 hours before field <br /> activities begun. USA will notify private utility companies about their responsibility to locate <br /> and mark all buried utility lines. USA can be reached through an 800 number which is listed <br /> in the white pages for the local area. All field vehicles and heavy equipment will be maintained <br /> at a minimum distance of 10 feet, in all vertical and horizontal directions from all electrical. <br /> Power lines (energized lines) and/or electrical equipment with a voltage less than or equal-to <br /> 50 kilovolts (M. If the voltage exceeds 50 kV, the clearance shall be increased by 4 inches <br /> for every 10 kV over that voltage. <br /> Sunburn <br /> Working outdoors on sunny days for extended periods of time can cause sunburn to the skin. <br /> Excessive exposure to sunlight is associated with the development of skin cancer. Field staff <br /> Should take precautions to prevent sunburn by using sunscreen lotion and/or wearing hats and <br /> long-sleeved garments. <br /> Heat Stress <br /> The potential for heat stress is a concern when field activities are performed on warm, sunny <br /> days, and is accentuated when chemical protective clothing is worn. Heat stress prevention <br /> measures and monitoring will be implemented if site temperatures are above 70 degrees <br /> Fahrenheit (F). <br /> Precautions to prevent heat stress will include worktrest cycles so that rest periods are taken <br /> before excessive fatigue occurs, and regular intake of water to replace that lost from sweating. <br /> Work/rest cycles will be based on monitoring the heart rate (pulse) of each individual worker. <br /> Rest breaks will be long enough to reduce the heart rate (HR) below levels calculated according <br /> to the following method: <br /> 1. The worker will initially determine their resting HR prior to starting work <br /> activities. <br /> 2. At the start of the first rest period, the worker will determine their HR. This <br /> initial HR should not exceed the individual's age-adjusted maximum HR, which <br /> equals [(0.7)(220 - age in years)]. At 1 minute into the rest period, the recovery <br /> HR will be determined. The recovery HR should not exceed 110 beats per <br /> minute. <br /> 3. If the initial HR exceeds the age-adjusted maximum HR, or the 1-minute recovery <br /> HR is greater than 110 beats per minute, then the next work period will be <br />. decreased by 10 minutes. <br /> v�szares <br /> NPLOMM <br />