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• • Project No. 014-95262 ' Page No. 8 Some general guidelines representing EPA Level C personal protection that may be used are: • TyvekO coveralls (or equivalent), neoprene boots and rubber gloves (to be worn by any personnel who handle contaminated drilling equipment. • Individuals at drilling sites not directly exposed to contaminated soils or liquids may not need to wear Tyvek®coveralls due to the increased hazards of heat stress when wearing this type of clothing. • Latex or PVC disposable gloves should be worn under butyl rubber or nitrile gloves to provide an extra measure of hand protection when handling heavily contaminated soils and water samples. • Chemical splash goggles will be worn when increased splash hazards exist, such as steam cleaning activities, during or the handling of contaminated liquid samples. • Respiratory protection will be worn during drilling activities which have the potential to expose workers to hazardous levels of airborne contaminants. Direct reading personal breathing zone monitoring will be performed. The criteria established for the use of respiratory protection are discussed in Section 4.0. 3.3 Potential Heat Stress Hazards ' During conditions when the temperature, humidity and/or radiant heat are high and air movement is low, the following procedures will be followed to prevent heat stress hazards for workers wearing protective clothing/equipment: • Work activity will be limited to reduce the amount of heat naturally produced by the body. Alternating work and rest periods will be used in high potential conditions. For example, in moderately hot conditions, 5 minute rest breaks in the shade with 60 minute work periods in the sun may be desirable. Under severe conditions, the duration of rest periods will be increased as necessary. IHeavy work will be performed during the cooler periods of the day when feasible. • Under heat stress conditions special attention will be given toward assuring workers replace lost body fluids. Adequate supplies of cool drinking water or electrolyte solution will be provided by each company for their own employees' use. Workers will be instructed in the need to replace the fluids throughout the working day. • Special care and attention will be paid to field crew members that may not be acclimatized to the area. KRAZAN&ASSOCIATES,INC. Offices Serving the Western United States I95262.HSP