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GRIIN <br /> • respiratory protection is being used If airborne organic vapor concentrations exceed 100 <br /> ppm (sustained) in the breathing zone, work will stop and site personnel will move <br /> upwind of the work site until levels decrease below 100 ppm <br /> 6.3 Work Zones <br /> The operational history of the site indicates a low potential for elevated OVA readings, <br />' therefore, Level D PPE will likely be appropriate during soil remediation activities Two <br /> zones will be established an exclusion zone (work area) and the surrounding support <br />' zone If air monitoring results indicate that an upgrade to Level C is necessary, a <br /> decontamination zone will be established The buddy system will be used at all times <br />' Flagging and barricades will be placed to prohibit the entry of all unauthorized personnel <br /> to the exclusion zone The specified level of protection will be worn in the exclusion <br /> zone at all times, and decontamination will be completed before exiting the zone <br /> lie 6.4 Site Visitors <br /> Site access will be restricted as follows <br /> ❑ Site visitors entering the exclusion zone will be strictly limited The project <br /> manager or HSO must approve entry Visitors must demonstrate <br /> appropriate medical and training clearances to enter the exclusion zone and <br /> rmust be given site-specific training <br /> ❑ All visitor access must be clearly documented and visitors must comply with <br /> all provisions of this HSP <br /> 6.5 Communication <br />' If verbal communication is impeded by heavy equipment noise or the use of PPE, hand <br /> signals to be used between personnel within the exclusion zone will be reviewed during <br /> the site safety meeting conducted before the start of site work <br /> I <br />' S\BFS\ST0CKT0N\HSP002] 3/19/01 6-3 <br />