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community Protection <br /> i.; <br />{ To assure the community is protected from health and fire <br /> " monitoring will be <br /> hazards , up wind and down wind vapor, <br /> performed if the general work area has hydrocarbon levels <br /> exceeding 100 ppmv , If down wind ;[monitoring indicates <br /> istent levels of 30 ppmv at the perimeter of the work area, <br /> work will be shutdown and vapor ;;control efforts will be <br /> instituted until measurements indic•atejlevels have dropped <br /> below 30 ppmv. An alternative approach o•f expanding the taped <br /> off area zone may be used to provideadditional community <br /> protection. <br /> i <br /> } <br /> l r� <br /> k <br /> • t ii <br /> 7 `I <br /> 4 <br /> tf f <br /> f j <br /> h • • <br /> y <br /> i 4 <br /> 3 <br />