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In cold temperatures,especially when combined with high wind,follow hypothermia precautions: • Drink warm liquids and take frequent work breaks in a wind-sheltered area; Monitor co-workers for signs of shivering, in coordination,or confusion and remove workers exhibiting these signs from the work area to a heated warming shelter. • Dress in removable layers of insulated clothing to prevent sweating and use protective waterproof gear; • Frostbite(superficial or deep tissue)can occur on any exposed skin at temperatures of 30.2°F or colder. • If available clothing does not give adequate protection to prevent hypothermia or frostbite (which can occur on any exposed skin), work should be modified or suspended until adequate clothing is available or until conditions improve. If extreme cold conditions are encountered, follow the ACGIH TLV booklet's "work-warming regime" recommendations, taking an appropriate number of breaks in a heated warming shelter. E. FIRE AND EXPLOSION HAZARDS: During the course of underground storage tank removal, drilling, or remediation of petroleum impacted soil or ground water, the potential for fire and explosion of flammable vapors exists. Extreme caution should be taken to monitor for the presence of flammable vapors or conditions that could create flammable conditions. Explosimeters are available for this monitoring and action levels are defined in Section VILB page 10. Fire extinguishers must be available on all sites with the potential for flammable vapors or electrical fires (i.e., systems, control panels). Use of fire extinguishers by employees trained in their use is limited to employee rescue or extinguishing relatively small,controllable fires. Antea Group does not expect or require its employees to fight fires. In the event of a fire or explosion,the following action plan should be followed: Shut down equipment and shut off all supply lines immediately if this can be done safely. Evacuate the immediate area. At this point you may not know if a soil vapor fire has started or if a supply line, natural gas line,etc.has been hit. Tank, supply line, or remediation system fires are extremely hazardous and precautions must be taken to evacuate the area immediately. Call 911 to notify the fire department. Antea Group employees are not trained fire brigades. Every fire should be treated as an emergency. Even if site personnel extinguish the fire, professional fire departments should evaluate the situation to ensure that the danger is over and that a fire will not reoccur. Evaluate the situation to identify the source of the flammable vapors and to assess the danger to employees,the public and property. From a safe distance, try to determine if the fire is due to a ruptured supply line, ignited soil vapors or methane, or is electrical. This information should be communicated to the fire department. Small fires from known sources (i.e., engine fires, electrical panel fires, etc.) may be extinguished if the employee can do it without high risk. A soil vapor fire may eventually burn itself out. Soil stockpiles must be placed away from nearby structures and property lines. Extinguishing fires in fuel vapor-laden soils with clean soil may be possible. Employees or subcontractors shall not enter an excavation to attempt to extinguish a fire. F. NOISE/HEARING PROTECTION: Workers shall be instructed in the recognition of noise hazards and shall be provided,and trained in the use of,hearing protective devices. Hearing protective devices shall be worn when working around heavy equipment,particularly drill rigs,or when background noise is so high that a worker has to shout to be heard at a distance of 3 feet. In addition, hearing protection will be employed when: • 100 feet of a locomotive/Refrigeration Car or roadway/work equipment • 15 feet of power operated tools • 150 feet of jet blowers or pile drivers • 150 feet of retarders in use(when within 10 feet, Contractor Employees must wear dual ear protection—plugs and muffs) 13