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Page 13 <br /> X. AIR MONITORING <br /> A. KNOWN CONTA1VINANTS -When air monitoring in the breattung zone (for a one minute <br /> duration)detects concentrations at the action level(s), introduce the appropriate action <br /> 1. Gasses and Vapors <br /> Action Level <br /> Instrument Calibration Frequency/ Above <br /> and date of Gas Duration of Air Background <br /> Calibration Standard Monitorin reathin Zone Action <br /> OVM(PID) 100 ppm Every 30 minutes Introduce engineering <br /> Isobutylene or sooner if controls (i.e blower fans) <br /> RF = 0.70 odors detected 52pm vel D <br /> 100ppm Don respirator vel C <br /> 500ppm Leave area vel C <br /> NE UpZrade to Level B <br /> 2 Explosion Hazard <br /> Action Level Above <br /> Instrument and Date Background Frequency/Duration <br /> of Calibration Ambient Air of Air Monitoring Action <br /> Combustible as indicator Greater than 20% LEL Leave Area <br /> NE = NOT EXPECTED <br /> Parker Environmental Services, 4185 Rialto Court, Pittsburg, CA 94565-6116 <br /> Phone (510) 439-1024 Fax (510) 439-2566 <br />