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AECOM Heat-Related Illness Prevention <br /> Table 1-1 Temperature Adjustment Factors <br /> Time of Day Adjustment ff) <br /> Before daily temperature peak' +2 <br /> 10 am—2 pm (peak sunshine) +2 <br /> Sunshine <br /> No clouds +1 <br /> Partly Cloudy(3/8—5/8 cloud cover) -3 <br /> Mostly Cloudy(5/8—7/8 cloud cover) -5 <br /> Cloudy(>7/8 cloud cover) -7 <br /> Indoor or nighttime work -7 <br /> Wind <br /> Gusts greater than 5 miles per hour at least once per minute -1 <br /> Gusts greater than 10 miles per hour at least once per minute -2 <br /> Sustained greater than 5 miles per hour -3 <br /> Sustained greater than 10 miles per hour -5 <br /> Humidity <br /> Relative Humidity greater than 90% +5 <br /> Relative humidity greater than 80% +2 <br /> Relative Humidity less than 50% -4 <br /> Chemical Protective Clothing (CPC) <br /> Modified Level D(coveralls, no respirator) +5 <br /> Miscellaneous <br /> Un-acclimated work force +5 <br /> Partially acclimated work force +2 <br /> Working in shade -3 <br /> Breaks taken in air conditioned space -3 <br /> This adjustment accounts for temperature rise during the day. If the temperature has already reached <br /> its daytime peak it can be ignored. <br /> The Adjusted Temperature (from Table 1-1, above)should be compared with the values in Table 1-2 <br /> (below)for the applicable work rate (where"light work"corresponds to minimal physical activity besides <br /> standing/watching, and "very heavy work"corresponds to significant, continuous physical labor)to <br /> determine the work-rest frequency. <br /> May 2015 Page 5 of 10 <br />