Laserfiche WebLink
TABLE 3 <br /> Airborne Chemical Action Levels In Breathing Zone <br /> Parameter Action Level' Required Action' <br /> Dust >0.5 mg/m3 above background Use Dust Suppression(watering or equivalent) <br /> Unknown VOCs >5 ppm above background Detector tube for benzene,continue to work if no benzene <br /> <50 ppm detected <br /> Benzene >0.5 ppm Stop work;contact CIH3 <br /> 02 >>23.5%or < 19.5% Stop work;determine cause <br /> LEL >-10%of LEL Stop work;determine cause <br /> Airborne Chemical Action Levels in UST During Inerting <br /> Parameter Action Level' Required Action' <br /> 02 >8% Continue inerting tank—trying distributing dry ice using water <br /> or adding additional dry ice,do not proceed with <br /> deconnecting electrical wiring until action levels have been <br /> met <br /> LEL >10%of LEL Continue inerting tank—trying distributing dry ice using water <br /> or adding additional dry ice,do not proceed with <br /> deconnecting electrical wiring until action levels have been <br /> met <br /> Notes: <br /> ppm=parts per million. <br /> LEL=lower explosive limit. <br /> 1. Five excursions above the action level in any 15 minute period or a sustained reading in excess of the action levels for <br /> 5 minutes will trigger a response. <br /> 2. Frequency of air monitoring may be adjusted by the CIH alter sufficient characterization of site contaminants has been <br /> completed,tasks are modified or site controls have proven effective. <br /> 3. Contact with the Project CIH must be made prior to continuance of work. The Project CIH may then initiate integrated air <br /> sampling along with additional engineering controls. No one is permitted to downgrade levels of PPE without authorization <br /> from the Project CIH. <br /> civcn:WIa�usnoz-iMY da i of 1 <br />