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Flammable materials will be cleared away from the site prior to the start of work. If a <br /> fire does occur, the local fire department will be contacted immediately. <br /> Operation Shutdown <br /> Under extreme circumstances the on-site supervisor, safety officer, or project manager <br /> may request that operations by temporarily suspended while the underlying hazard is <br /> corrected or controlled. If vapor measurements with the explosive vapor monitor show <br /> levels approaching explosive limits, operations will be stopped while the area is controlled. <br /> During this activity, all personnel will be required to stand up wind to prevent exposure to <br /> fugitive vapor emissions. The safety officer will have ultimate authority for operation <br /> shutdown. <br /> Community Protection <br /> To assure the community is protected from health and fire hazards, up wind and down wind <br /> vapors monitoring will be performed if the general work area has hydrocarbon levels <br /> exceeding 100 ppmv. If down wind monitoring indicates persistent levels of 30 ppmv at the <br /> perimeter of the work area, work will be shutdown and vapor control efforts will be <br /> instituted until measurements indicate levels have dropped below 30 ppmv. An alternative <br /> approach of expanding the taped off area zone may be used to provide additional <br /> community protection. <br /> A:\HEAL&$AF\TANK.001 29 January 1993 <br />