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GeosyntecO <br /> consultants <br /> Appendix D:Air Monitoring <br /> Applies to Task: No ® O ❑ O ❑ O ❑ O 110 ❑ O ❑ O <br /> ® Photoionization Detector(PID) ❑ Oxygen(02)Meter ❑ Explosimeter <br /> Brand/Model No.:MiniRAE 3000+or equivalent eV:10.6 Brand/Model No.: Brand/Model No.: <br /> Monitoring Frequency:. Continuous Monitoring Monitoring:Frequency: Monitoring Frequency: <br /> Breathing Zone Action Reading(°lo) Source(%LEL) <br /> Reading(ppm) Action <br /> 0 to 1 Level D PPE Less than 19.5 Reading Action <br /> Stop work.Evacuate the area. 1 to 10 Continue with caution. <br /> Greater than 1 Stop work.Evacuate the area.If upon 19.5 to 23.5 <br /> ppm return,levels still exceed the action level, Continue to work with caution. Greater than 10 Stop work.Evacuate the area.If upon <br /> stop work,and implement engineering Greater than 23.5 return,concentration still exceeds 10% <br /> controls. Stop work.Evacuate the area. 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 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 D-1 4.2.2026 <br />