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• • Project No. 014-95262 Page No. 20 11.2 Fire and Explosion Hazards ' Fires are of particular concern during this investigation due to the possibility of encountering flammable petroleum hydrocarbon liquid or vapors. An adequate multi-purpose (A,B,C) fire extinguisher ' will be located on-site on the drill rig at all times. The local fire department will be notified by a Krazan & Associates representative of the location and anticipated activities in order to provide a more timely response in the event of an emergency. In the remote chance that a fire does occur, the local fire department will be notified immediately. Additional calls to the main office of Krazan & Associates will be made. The project director would then notify the client. 11.3 Operations Shutdown ' Under certain extremely hazardous situations the Task Leader, Project Director, Task Safety Officer, may request that field operations be temporarily suspended while the underlying hazard is corrected or controlled. ' During any sampling or drilling activity breathing zone PID measurements for hydrocarbons or volatile organic compounds will be performed. If these levels exceed 50 ppmv, detector tubes will be used ' to further quantify the benzene vapors present. If the level of benzene is detected above 0.5 ppmv or PID readings are consistently in excess of 50 ppmv, respirators will be required and monitoring will be performed every 30 minutes. If PID measurements above 1400 ppmv occur in general area or at well head, a potential fire or explosion hazard may exist. Under these circumstances activities will be stopped ' until these levels are brought down. This may be accomplished by containerizing contaminated soils or liquids, covering contaminated soil, foam, visquene, or with clean soil to isolate the source. 11.4 Community Protection To assure the community is not affected by our investigation, upwind and downwind monitoring with the PID will be performed if the general work area hydrocarbon levels exceed 100 ppmv. If site downwind monitoring indicates persistent levels above 50 ppmv at the perimeter of the work area, work will be shut down until PID readings drop below 50 ppmv. Alternately the exclusion zone may be ' expanded to provide additional community protection. ' KRAZAN&ASSOCIATES, INC. Offices Serving the Western United States 95262.HSP