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Geosyntec° consultants Appendix D: Air Monitoring Applies to Task: ® 1 O ❑ 20 ® 30 ® Photoionization Detector(PID) ❑ Oxygen (02)Meter ❑ Explosimeter Brand/Model No.: eV:10.6 Brand/Model No.: Brand/Model No.: Monitoring Frequency:Continuous Monitoring Frequency: Monitoring Frequency: Breathing Zone Action Reading(%) Action Source(%LEL) Reading(ppm) ND to 1 Level D PPE Less than 19.5 Stop work.Evacuate the area. Reading Action to Level C PPE 1 to 10 Continue with caution. 19.5 to 23.5 Continue to work with caution. Greater than 1- Stop work.Evacuate the area.If upon return,levels still exceed the action level, Greater than 10 Stop work.Evacuate the area.If upon stop work,and implement engineering Greater than 23.5 Stop work.Evacuate the area. return,concentration still exceeds 10% controls. LEL,ventilate until concentration is back to<10%LEL. Note:If action level of 1 ppm continuously exceeded,stop work Note: Note: and consult with regional health and safe, manager. ❑ Flame Ionization Detector(FID) ❑ Chemical Detector Tube ❑ Other Brand/Model No.: Brand/Model No.: Brand/Model No.: Monitoring Frequency: Monitoring Frequency: Monitoring Frequency: Breathing Zone Action Breathing Zone Action Breathing Zone Action Reading(ppm) Reading(ppm) Reading to Level D PPE to Level D PPE to Level D PPE to Level C PPE to Level C PPE to Level C PPE 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 return,levels still exceed_,stop work, return,levels still exceed_,stop return,levels still exceed_,stop and implement engineering controls. work,and implement engineering work,and implement engineering controls. controls. Appendix D D-1 Date(e.g.,15.03.2015)