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SITE AIR MONITORING PROGRAM <br /> Action Levels <br /> �rtAnlment response ftactors <br /> These Action Lareis not defined by reyulatron are some Percer>r lusuafiy 50V Of the aopkrca PEL/RE,jv Thai number must&iso be adj Med 0 acmu+sl kr <br /> Tasks Action Level Action <br /> ❑Explosive atmosphere Ambient Air Confined Space <br /> �.>n�an�r_f_.. ir�`creunfipR <br /> <10% LEL 0 to 1% LEL Work may continue <br /> Consider toxicity <br /> potential <br /> 10 to 25% LEL 1 to 10% LEL Work may continue <br /> Increase monitoring <br /> frequency <br /> >25%LEL >10% LEL Work must stop <br /> Ventilate area before <br /> returning <br /> ❑Oxygen Ambient Air Confined Space <br /> Concentration Concentration <br /> <19/5%02 <19 5% 02 Leave Area Re-enter <br /> only with self-contained <br /> breathing apparatus <br /> 19/5%to 25% 02 19 5%to 23 5% 02 Work may continue <br /> Investigate changes from <br /> 21% <br /> >25%Oz >23 5%OZ Work must stop <br /> Ventilate area before <br /> returning is <br /> ❑Radiation < 3 times background Continue Work <br /> 3 Times Background to Radiation above <br /> < 1 mR/hour background levels <br /> (normally o ot-0 02 <br /> mR/hr)g signifies <br /> possible soR (sr'-"`!' <br /> radiation present. <br /> Continue investigation <br /> with caution Perform <br /> thorough monitoring <br /> Consult with a Health <br /> Physicist <br /> > 1 mrem/hour Potential radiation <br /> hazard Evacuate site <br /> Continue investigation <br /> only upon the advice of <br /> Health Physicist <br /> El/Organic gases and vapors f <br /> P >� <br /> ❑Inorganic gases and vapors and particulates <br /> • <br /> C Sora e F-ea' h s-d S3rety j <br />