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VZ1 I N C <br /> '4011 Initial Site Entry Procedures <br /> ' Level D PPE and as outlined below Air monitonn9 with portable flame ionization detector <br /> a portable direct-reading air monitoring <br /> Prior to entering the site, the SSO shall calibrate the port e g g <br /> instruments upwind from site in an uncontaminated area <br /> ' The SSO shall then determine background readings for all air monitoring instruments in <br /> this same upwind, off-site, uncontaminated area <br /> 1 <br /> The SSO shall record the instrument calibration procedures and results and all <br /> ' background readings in the Site Safety Log Book <br /> ' All personnel must enter the site from an upwind position if possible <br /> C. Work Zones <br /> ' At the beginning of each work shift the WZI SSO shall perform initial air monitoring with <br /> portable direct-reading instruments to identify the area{s} on-site where gas and vapor <br /> ' contamination is present <br /> ' Based on these initial air monitoring readings, the SSO shall establish discrete work zones <br /> ' as follows <br /> 1 <br /> APPENDIX I <br /> e2270020 025 9 <br /> 1 <br />