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Project No. 014-94276 Page No. 8 Some general guidelines representing EPA Level C personal protection that may be used are: • Tyvekg 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 exp sed to contaminated soils or Iiquids may not need to wear Tyvek®coveralls due Lo 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 had 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 Cie handling of contaminated liquid samples. • Respiratory protection will be worn durinD, drilling activities which have the l potential to expose workers to hazardous lev is 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, humidityand/or radiant heat are high and air movement i' is Iow, the following procedures will be followed to prevent heat stress hazards for workers wearing protective clothing/equipment: Work activity will be limited to reduce theamount 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. • Heavy work will be performed during the cooler periods of the day when feasible. • Under heat stress conditions special attent on 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 fi ld crew members that may not be acclimatized to the area. KRAZAN & ASSOCIATES, INC. Offices Serving the Western Mited States 94276.HSP