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Action Level Table For Air Quality Monitoring <br /> • <br /> Tile level for respirator use indicated below is that concentration at which a respirator must be put on. It does not require the job to stop. The respirator is a <br /> tool to be used while determining why the exposure has reached that concentration. Take action to reduce the concentration by engineering controls such as <br /> water mist,spray foam,plastic cover, etc. <br /> • The level for work stoppage indicated below is that concentration at which work on the job must stop. Determine why exposures have reached that <br /> concentration and how they can be reduced. Site evacuation is not necessary at this level. It does not mean that stopping operations should reduce the <br /> likelihood that the concentration will continue to rise. Implement engineering controls to reduce the concentration,then resume work. <br /> • These values can be modified with particular knowledge of contaminants and site conditions. Contact Director of Industrial Hygiene&Health and Safety, <br /> Philip Platcow to discuss(617)232-7355. <br /> CHEMICAL MONITORING MONITORING LEVEL FOR LEVEL FOR <br /> (OR CLASS) EQUIPMENT TASK FREQUENCY/ WORK <br /> LOCATION RESPIRATOR USE STOPPAGE <br /> Volatile Organic FID/PID as appropriate for From start of <br /> Vapors chemicals of concern.Read mobilization to Sampling should be continuous during Respirator to be used Stop work at 25 <br /> the project while disturbing potentially will be full-face piece ppm on the <br /> manual to determine. completion and contaminated soil or respirator with organic PID/FID. <br /> demobilization <br /> uncovering/removing tanks and piping, vapor/P 100 combination <br /> or during drilling. At least every cartridges. Continuously <br /> attempt to <br /> 15 minutes in the breathing zone. determine cause of <br /> Sample at the exclusion zone boundaries The level for respirator <br /> use will be 5 m on the exposure and <br /> every 30 minutes. pP usage of <br /> Continuously sample during each soil PIDIFID. <br /> engineering <br /> and groundwater sampling interval. At donning respirator controls to attempt <br /> level,determine cause of to never reach the <br /> exposure and implement stop work level <br /> engineering controls to <br /> reduce concentrations. <br /> ( <br /> Conoc <br /> SECO P Project <br /> s SECOR International Incorporated <br /> SECOR Project No. rP <br /> HASP CPT grilling for V McCartney <br /> excerpts from 11193 <br />