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3.0 AIR MONITORING <br /> 3 1 Air Monitoring <br /> Air monitoring must be performed on sites as required, in accordance with AES-RS Respiratory Protection Program <br /> Organic vapor concentrations are monitored in the field with a flame ionization detector (FID) or photo-ionization <br /> detector (PID) All readings are taken in the workers' breathing zone to determine whether an action level has been <br /> met and/or exceeded Air monitoring results must be documented <br /> Air monitoring action levels (Table 3-1) have been developed to indicate the chemical concentrations in the breathing <br /> zone that require an upgrade in level of personal protective equipment (PPE) The action levels apply to all tasks <br /> performed on this site Guidelines for frequency of air monitoring are presented in Table 3-2 <br /> TABLE 3-1 <br /> AIR MONITORING ACTION LEVELS <br /> Instrument* / Function Measurement I Action/Protective E ui ment Required <br /> Photwomzation Detector (PID) or Flame Ionization Detector (FID) - Measures total organic vapors <br /> 0 - 99 ppm Level D <br /> 99 - 499 ppm Upgrade to modified Level D - Half-mask or <br /> full-mask respirator with acid gas/organic vapor <br /> cartridge required <br /> z 500 ppm Stop work Notify PM and RHSO <br /> Oxy en/Ex losimeter (0 /LEL) - Measures oxygen level (0 ) and lower explosive limit (LEL) <br /> 0, 19 5 - 22% 0 Acceptable conditions Continue <br /> normal active <br /> 0 C 19 5% 0 Stop work Notify PM or RHSO <br /> 0, >22% 0 Leave area munediately, this <br /> condition causes extreme fire hazard <br /> 0 Notify PM or RHSO <br /> LEL _<10% 0 Acceptable conditions Continue <br /> normal activity <br /> LEL >10% 0 Leave area immediately <br /> 0 Contact PM or RHSO <br /> * Note Instruinents must be calibrated according to manufacturer's recommendations <br /> 10 <br />