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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 can be made available for this monitoring and action levels are defined in Section VII.B pages 9/10. 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. Miller Brooks 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. Miller Brooks'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 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. G. LEVELS OF PROTECTION: Work on typical environmental remediation sites can usually be performed in Level D protection: hard hat, steel-toed work shoes/boots, long pants,safety glasses, hearing protection,and gloves if needed. If monitoring equipment or site conditions indicate the need to upgrade the level of protection to Level C, air-purifying respirators with organic vapor canisters (or other appropriate cartridges) will be donned. Tyvek coveralls with hoods, chemical resistant inner and outer gloves, and disposable boot covers may need to be used but only as provided and directed by the Project Manager. Coordinate upgrading dermal protection with the Site Manager. At no time will a Miller Brooks employee conduct work on any site requiring Level A or B protection. H. DECONTAMINATION PROCEDURE: Level: C. F--] D. X❑ Contamination may result from walking through contaminated soils or liquids, splashing liquids during sampling, use of or contact with contaminated equipment, or contact with air contaminants. Due to the volatile nature of petroleum hydrocarbons and VOCs that may be encountered during drilling, hand-augering and sample collection procedures,the need to decontaminate equipment and vehicles will be minimal. Field team workers will be instructed to observe the following precautions to assure contaminants will not remain in contact with their skin. • Tools,equipment and personnel will be decontaminated using procedure appropriate for level of personal protection worn. • All contaminated,disposable clothing will be properly bagged for disposal and left on site.All personnel will be instructed to wash hands,face,neck and forearms at the end of the work shift and to shower at the end of the workday. Miller Brooks Environmental Inc. 1/30/2008 Page 13