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Site Safety and Health Plan Petroleum Hydrocarbon Contamination Terracon Project#67047008 Page 14 1.0 = No Clouds 0.75 = 25% Clouds 0.5 = 50% Clouds 0.25 = 75% Clouds 0.0 = 100% Clouds). Calculate the adjusted temperature using the following formula: ADJUSTED TEMPERATURE = 13(% CLOUD COVER) + DRY TEMPERATURE Rest regimens and physiological monitoring (oral temperature and radial pulse) will be implemented at frequencies dependent upon adjusted temperature. Adjusted Temperature Rest Period/Monitoring Frequency 90+ After 15 minutes 87.5-90 After 30 minutes 82.5-87.4 After 60 minutes 77.5-82.5 After 90 minutes 70.5-77.4 After 120 minutes Employees will return to work only after oral temperature is below 99.7 degrees F and pulse rate < 90. Fluid replacement will be encouraged during each rest period. The use of stimulants and alcoholic beverages in off hours will be discouraged. 16.0 COLD STRESS Persons working outdoors in low temperatures, especially at or below freezing are subject to cold stress. Exposure to extreme cold for a short time can cause severe injury to the surface of the body or result in profound generalized cooling which, in extreme cases, can lead to coma and death. Areas of the body which have high surface area, such as fingers, toes and ears are most susceptible. Protective clothing generally does not provide protection against cold stress. In many instances it may increase susceptibility due to excessive perspiration which can rapidly cool the body when exposed to cold, windy conditions. The greatest incremental increase in wind chill occurs when a wind of 5 mph increases to 10 mph. And, because water conducts heat approximately 240 times faster than air, the body will cool rapidly when chemical protective equipment is removed if undergarments are saturated with perspiration. Whenever ambient temperatures are expected to be below freezing, Terracon personnel will consult the cold stress section of the Terracon Safety and Health Policy and Procedures Manual to re-familiarize themselves with signs, symptoms and treatment of cold injuries. Thermal boot, glove and hard hat liners will be mandatory for all personnel conducting field activities in ambient temperatures below freezing.