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Attachment 5 <br /> SECOR <br /> Action Level Table For Chemical Monitoring <br /> 'CHEMICAL MONITORING CALIBRATION/ TASK MONTTORING LEVELFOR LEVEL FOR WORK <br /> (OR CLASS) QUHTE11T CHECK NO. FREQUENCY/ RESPIRATOR USE STOPPAGE <br /> LOCATION <br /> Volatile Organics PID-Mini Rae or OVM Daily with isobutylene All ground During each 10 ppm above background 20 ppm above background <br /> calibration gas. water sampling regimen, sustained in breathing zone sustained in breathing zone <br /> sampling Note careful of for a minimum of 1 minute and no benzene tube <br /> use of the and benzene tube non-detect. discoloration. <br /> instrument <br /> described in the <br /> step by step <br /> procedure table to <br /> ensure that the <br /> chance of <br /> overexposure is <br /> Benzene reduced. <br /> Any tube discoloration <br /> PID-Mini Rae or Leak check pump daily. All ground During each >2 ppm in breathing zone. <br /> OVM-and Drager 0.5/a Check expiration date of water sampling regimen. <br /> benzene tube tube and tube integrity, sampling <br /> AIR MONITORING EQUIPMENT CALIBRATION/CHECK LOG* <br /> BATTERY : ; ZkIt .'. <br /> INST>2tJx `Nx'/ .SSRIAI, CALIBRATIOP�. READING LEAK PE <br /> RFdRMFR <br /> DATE MODEL NO. NO. KOki OK"ST GAS(I'PM) (YPM) CHECK g COMMENTS <br /> SECOR International Incorporated 20 HASP-drilling <br />