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Health and Safety Plan 12 <br /> Sears,5110 Pacific Avenue, Stockton, California October 22, 1999 <br />' Table 3 Option 2, Air Monitoring Action Levels <br /> Instrument* Function F Measurement T Action <br /> Photoionization Detector{PID) 10 2 eV Lamp <br /> Flame Ionization Detector(FID) Measures total organic vapors <br /> Background 10 Level D required <br /> m <br />' > 10 - 75 ppm Upgrade to Level C-Option to use half-mask <br /> cartridge respirator <br /> > 75 u 250 ppm Upgrade to Level C Must use full-face cartridge <br />' respirator <br /> > 250 500 ppm Upgrade to Levet B Contact PM and HSS for <br /> guidance and approval <br /> > 500 ppm Stop work Contact PM and HSS for guidance and <br /> approval <br /> Ox en/Combustimeter(O ILEL) Measures oxygen level {O I and LEL <br /> A decrease O,reading of 0 1 0 = 20 9 % Acceptable <br /> percent (e g , 20 9 percent to <br /> 20 8 percentâ–º actually 0, > 19 5 20 8 % Verify reasons for Oz depletion with appropriate air <br /> t represents a change in the total monitoring instrumentation before work continues <br /> air envelope of approximately Utilize appropriate engineering controls/PPE once <br /> 0 5 percent or 5,000 ppm atmospheric contaminants have been verified <br /> This represents little hazard if <br /> the displacing gas is inert, if the 0, > 20 9 - 22 % Verify reasons for O,enrichment before entering <br /> displacing gas is area Utilize appropriate engineering controls/PPE to <br /> toxic/flammable/ control O enrichment atmosphere <br /> reactive, such a concentration Oz > 22 % Leave area immediately, this atmosphere is extremely <br /> represents a real hazard flammable Notify PM or HSS for guidance <br /> 0, C 19 5% Leave area immediately,this atmosphere is oxygen j <br /> deficient Verify reasons for O, depletion with <br />' appropriate air monitoring instrumentation before <br /> work continues Utilize appropriate engineering <br /> controlslPPE once atmospheric contaminants have <br /> been verified <br /> LEL < 10 % Acce table conditions Continue normal activit <br /> LEL > 10% Leave area immediately Contact PM or HSS for <br /> guidance on venting and othersafety measures <br /> *Note Instruments must be calibrated according to manufacturer s recommendations <br /> 1 <br /> 1 <br />