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TOXICITY ACTION LEVELS FOR DIESEL/NO. 2 FUEL OIL <br /> (in ppm) <br /> Action <br /> Instrument Calibration Gas Upgrade to Evacuate <br /> Level C <br /> Photoionization meter' Isobutylene 30 604 <br /> (Microtip with 10.0 to 300** <br /> 10.2 eV lamp) <br /> Flame-ionization meter Methane 90 100' <br /> (OVA-128) 500** <br /> N Pbotoionization instruments do not work and will not be used for work in high (>90%) humidity or rainy <br /> weather. <br /> for workers wearing 1/2 face respirators. •• for workers wearing full face respirators. <br /> All instruments will be calibrated both immediately prior to commencing the bay's field work <br /> and after work ceases for the day. Calibration and monitoring records shall be kept in the <br /> project file and provided to the operating unit HSO. Calibration Log and Project Safety Log <br /> forms can be found in Section 10.0. <br /> 6.7.3 Explosion Hazard Action Levels <br /> The explosivity action levels below are set to prevent the creation of <br /> flammable or explosive atmospheres. Measurements should be taken at all locations where <br /> personnel are present or power/hand tools are in use. <br /> 80500000 H:\HEALTH\FNLHSP April 21, 1997 <br /> FEMA UST, Fuul Gcmric HSP 16 <br />