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Geosynte& <br /> consultants <br /> Appendix D: Air Monitoring <br /> Applies to Task: ❑ O ❑ OO ❑ OO ❑ ® ❑ OO ❑ © ❑ OO ❑ <br /> ❑ Photoionization Detector (PID) ❑ Oxygen (02)Meter ❑ Explosimeter <br /> Brand/Model No.: eV: Brand/Model No.: Brand/Model No.: <br /> Monitoring Frequency: Monitoring Frequency: Monitoring Frequency: <br /> Breathing Zone Action Reading(%) Action Source(%LEL) <br /> Reading(ppm) Reading Action <br /> to Level D PPE Less than 19.5 Stop work. Evacuate the area. 1 to 10 Continue with caution. <br /> to Level C PPE Greater than 10 <br /> 19.5 to 23.5 Continue to work with caution. Stop work. Evacuate the area. If upon <br /> Greater than Stop work. Evacuate the area. If upon return, if concentration still exceeds <br /> return,levels still exceed the action level, 10% LEL, ventilate until concentration <br /> stop work and implement engineering eater than 23.5 Stop work. Evacuate the area. is back to<10%LEL. <br /> controls. <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 Zone 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 /> Greater 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 6/23/2023 <br />