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Air Monitoring Summary and Action Levels <br /> Organic Vapors <br /> PID Reading in Breathing Zone (ppm) Action <br /> 0-1 ppm above background Continue monitoring <br /> Continue monitoring, if applicable initiate <br /> >1-5 ppm sustained 60 seconds additional collection ofvinyl chloride using <br /> colorimetric tubes. <br /> <5 ppm and no presence of vinyl chloride Continue Monitoring, ventilate space <br /> > 5 ppm - < 25 ppm and no presence of vinyl Ventilate space until PID reads < 5 ppm. If< 5 <br /> chloride ppm cannot be achieved, upgrade to Level C'. <br /> > 25 ppm Ventilate space and evacuate area. <br /> Background concentrations should be established at the beginning of each work day. It may be necessary to re-establish <br /> background concentrations and ambient conditions vary through the day. <br /> Measured air concentrations of known organic vapors will be reduced by the respirator to one half of the PEL or lower,and <br /> the individual and combined compound concentrations shall be within the service limit of the respirator cartridge. <br /> Air Monitoring Summary and Action Levels <br /> Oxygen <br /> Oz Reading in Breathing Zone (%)' Action <br /> 20.9% Oz Oxygen level normal <br /> Oxygen deficient <br /> < 19.5% Oz Interrupt task/Evacuate area <br /> >23.5% Oz Oxygen enriched <br /> Interrupt task/Evacuate area <br /> Action levels based on USEPA Standard Operating Safety Guides;Table 5-1,Atmospheric Hazard Action Guidelines may <br /> be further restricted based on the CHSD's professional judgment and experience. <br /> Air Monitoring Summary and Action <br /> Carbon • • . <br /> CO Reading in Breathing Zone (ppm)' Action <br /> Inspect exhaust system for leaks or other sources <br /> <12.5 ppm of CO. Monitor initially and every 15 minutes <br /> during use of CO-generating equipment. <br /> 12.5-25 ppm Ventilate area. Monitor continuously and record <br /> measurements. Contact PM. <br /> >25 ppm Cease Field Operations. Ventilate area. <br /> Based upon the American Conference of Governmental Industrial Hygienists(ACGIH)Threshold Limit Value(TLV)of 25 <br /> ppm as an 8-hour time weighted average(TWA)and OSHA's Permissible Exposure Limit(PEL)of 50 ppm as an 8-hour <br /> TWA concentration. <br /> 3989.0001 S.104/HSP Site-Specific Health and Safety Plan l ROUX 130 <br />