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Geosyntec v <br /> consultants <br /> Appendix D: Air Monitoring <br /> Applies to Task: ❑ O ® OO ❑ OO ❑ ® ❑ Os ❑ © ❑ OO ❑ <br /> ® Photoionization Detector(PID) ❑ Oxygen (02)Meter ❑ Explosimeter <br /> Brand/Model No.: Ion Science Tier eV: 10.6 Brand/Model No.: Brand/Model No.: <br /> Monitoring Frequency: Continuous Monitoring Frequency: Monitoring Frequency: <br /> Breathing Zone Action Reading(%) Action Source(%LEL) <br /> Reading(ppm) <br /> 0 to 2 Level D PPE Less than 19.5 Stop work.Evacuate the area. Reading Action <br /> N/A to N/A Level C PPE 1 to 10 Continue with caution. <br /> 19.5 to 23.5 Continue to work with caution. <br /> Greater than 2 Stop work.Evacuate the area.If upon <br /> return,levels still exceed the action level, Greater than 10 Stop work.Evacuate the area.If upon <br /> Greater than 23.5 Stop work.Evacuate the area. return,concentration still exceeds 10% <br /> stop work and implement engineering <br /> controls. LEL,ventilate until concentration is <br /> back to<10%LEL. <br /> Note: Note: Note: <br /> ❑ Flame Ionization Detector(FID) ❑ Chemical Detector Tube ❑ Other <br /> Brand/Model No.: Brand/Model No.: Brand/Model No.: <br /> Monitoring Frequency: Monitoring Frequency: Monitoring Frequency: <br /> Breathing Zone Action Breathing Zone Action Breathing'hone Action <br /> Reading(ppm) Reading(ppm) Reading <br /> to Level D PPE to Level D PPE to Level D PPE <br /> to Level C PPE to Level C PPE to Level C PPE <br /> Grcatcr than_ Stop work.Evacuate the area.If upon Greater than_ Stop work.Evacuate the area.If upon Greater than_ Stop work.Evacuate the area.If upon <br /> return,levels still exceed_,stop work return,levels still exceed_,stop return,levels still exceed stop <br /> and implement engineering controls. work and implement engineering work and implement engineering <br /> controls. controls. <br /> Note: Note: Note: <br /> Appendix D D-1 10.22.2020 <br />