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Health and Safety Plan 11 <br /> Sears,511 O Pacific Avenue, Stockton, California October 22, 1999 <br /> Table 3 Option 1, Air Monitoring Action Levels <br /> Instrument" Function Measurement Action <br /> Photolonizat on Detector(PIDI 10 2 eV Lamp <br /> Flame loriixation Detector(FIDI Measures total organic vapors <br /> ' Verify benzene concentration Background -a 14 pm Level D required <br /> using detector tubes when <br /> 10 ppm PID reading has been > 10 - 25 ppm Level D required monitor for benzene with detector <br /> sustained for 5 minutes and, at tube to determine concentration <br /> ' a minimum, during every hour <br /> of sustained Level C work > 25 - 250 ppm Upgrade to Level C Full-face cartridge respirator is <br /> activities required <br /> > 250 - 1 200 ppm Upgrade to Level B Contact PM and HSS for <br /> ' guidance and approval <br /> > 1,200 ppm Stop work Contact PM and HSS for guidance and <br /> approval <br /> Benzene Detector Tubes 0- 0 5 ppm Level D required <br /> > 0 5 - 50 m Upgrade to Level C <br /> > 50 - 1,200 ppm Upgrade to Level B Contact PM and HSS for <br /> uidance and approval <br /> > 1,200 ppm Stop work Evacuate area Contact PM and HSS <br /> for guidance <br /> Ox en/Combustimeter (0 ILEL} Measures oxygen level (Q ) and LFL <br /> A decrease 02 reading of 0 = 20 9 % Acce table <br /> ' 0 1 percent (e g , 20 9 percent <br /> to 20 8 percent) actually 02 > 195 208 % Verify reasons for 02 depletion with appropriate air <br /> 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 02 > 20 9 - 22 % Verify reasons for 02 enrichment before entering <br /> displacing gas is area Utilize appropriate engineering controls/PPE to <br /> toxiclflammable/reactive, such control 0 enrichment atmosphere <br /> ' a concentration represents a 02 > 22 % Leave area immediately this atmosphere is <br /> real hazard extremely flammable Notify PM or HSS for <br /> guidance <br /> ' 02 < 19 5% Leave area immediately,this atmosphere is oxygen <br /> deficient Verify reasons for 02 depletion with <br /> appropriate air monitoring instrumentation before <br /> work continues Utilize appropriate engineering <br /> controls/PPE once atmospheric contaminants have <br /> been verified <br /> L < 10 % Acceptable conditions Continue normal activity <br /> ' LEL > 10% Leave area immediately Contact PM or HSS for <br /> uidance on venting and other safety measures <br /> *Note Instruments must be calibrated according to manufacturers recommendations <br />