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B. Action Level Table for Chemical Monitoring* <br /> MONITORING <br /> CHEMICAL MONITORING FREOUENCY/ LEVEL FOR LEVEL FOR WORK <br /> (OR CLASS) EQUIPMENT TASK NO. LOCATION RESPIRATOR USE STOPPAGE <br /> (source,area or <br /> breathing zone). <br /> Volatile organics Thermo 3- 10 Sample every 10 minutes 10 ppm above 100 ppm-breathing <br /> Environmental at source If free product background-breathing zone or 250 ppm- <br /> 580B is encountered sample zone(and benzene tube source(and benzene <br /> Photoionization every five minutes non-detect) tube non-detect) <br /> Detector 10 0 ev If>5 ppm, sample in <br /> lamp set for breathing zone <br /> maximal response <br /> to benzene <br /> BTEX Drager 0 5/a 3 - 10 If PID>5 ppm above Any tube discoloration 2 ppm-breathing zone <br /> (benzene) benzene tube background in breathing <br /> zone For a minimum of 1 <br /> minute from drager tube <br /> Explosive Vapor 02/L E L 5 -8 Prior to disturbance and NIA LEL>10% <br /> to confirm Oz< 19 5% <br /> mertmng/purging Oz>22% <br /> Record peak readings every M minutes,or more frequently as necessary <br /> Set alarm on instrument at 10 ppm <br /> Calibrate equipment every d4 to isobutylene for PID,fresh air and hexane for the O,IL E L respectively <br /> Leak check colonmetnc tube pump daily <br /> C W&S17NKPU -H$P <br />