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a.� <br /> r <br /> SITE AIR MONITORING PROGRAM <br /> Action Levels <br /> r These Action Lewis,f not dermad by regulation,are some DeruM lusuaty 50%)d the <br /> instnJmeM response radOft. aDDl�Gable PEL/f�L/TLV. That numDef must auo be adiusied b aCCOUM for <br /> Tasks Action Levet Action <br /> ❑Explosive atmosphere Ambient Air Confined Space <br /> Concentration Concentration <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 /> r <br /> <19/5%02 <19.5%02 Leave Area. Reenter <br /> only with self-contained <br /> breathing apparatus. <br /> 19/5%to 25% 02 19.5%to 23.5% 02 Work may continue. <br /> `r Investigate changes from <br /> 21%. <br /> >25%02 >23.5%OZ Work must stop. <br /> Ventilate area before <br /> ❑Radiation < 3 times background returning. <br /> Continue Work <br /> 3 Times Background to Radiation above <br /> J < 1 mR/hour background levels <br /> (normally 0.01-0.02 <br /> mR/hr)g signifies <br /> Possible source(s) <br /> radiation present. <br /> Continue investigation <br /> with caution. Perform <br /> r 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 /> "r Organic gases and vapors <br /> ^- I 'nit Health Physicist. <br /> t_e.,eI D/mc.-),+eJ <br /> P ty tJ <br /> >� vni+ J <br /> �1/0tt., ft GliSs �stf- <br /> ❑Inorganic gases and vapors and particulates <br /> r <br /> J <br />