Laserfiche WebLink
0 <br /> 80TIONFOUR site N=rd H=rAnalysis <br /> TABLE 4-1 <br /> Chemical Contaminants of Concern <br /> Methane 1 1000 <br /> Sources:NIOSH 2005;8 CCR 5155 et seq, , , , , and <br /> CNS = central nervous system OSHA = Occupational Safety and Health Administration <br /> GI = gastro-intestinal PEL = permissible exposure limit <br /> mg/kg = milligrams per kilogram ppm =parts per million <br /> Mg/M3 = milligrams per cubic meter TLV =threshold limit value <br /> ND = not detected µg/L =micrograms per Liter <br /> TABLE 4-2 <br /> Monitoring Equipment Action Levels—Project Field Activities <br /> Equtent:, fieading , ,;; Action <br /> Explosimeter <10% LEL Continue with caution. <br /> >10% LEL Halt operations and evacuate.Reassess situation.Attempt to <br /> determine what and why conditions are changing. <br /> t Jvleter 1 5�0 02 Halt*per Irons and +acuate Reassess situ ion.Attdinpt to <br /> deter In wtaat arid'N <br /> y nditl0t aro angling. <br /> 1:9 5-23�6 ft nue operations,,,,, <br /> " 2 Haltoperations And Vacudte.Reassess sit In.Attempt to <br /> +letrrntri at and why conditions are chaoing , <br /> CO < 15 ppm Periodic monitoring not less than every 30-minutes <br /> Meter/Explosimeter <br /> > 15 ppm and<25 Reduce sources of vehicle/engine exhaust and increase ventilation. <br /> ppm Increase monitoring to not less than every 15-minutes. <br /> >25 ppm Shut down sources of vehicle/engine exhaust and evacuate <br /> immediate area. Contact HSM <br /> H2S Meter < 10 ppm Periodic monitoring not less than every 5-minutes <br /> > 10 ppm and<20 Increase to continuous monitoring. <br /> ppm <br /> >20 ppm Evacuate area immediately.Contact HSM <br /> a Readings are above background levels and taken in the breathing zone of field personnel. Monitoring to be conducted twice <br /> during each work shift,or as deemed necessary by the SSO or PM.For benzene confirmed contaminants or if benzene cannot <br /> be ruled out(at the TLV action level full-day confirmed exposure)work resulting in exposure must stop and the PHSO or NSM <br /> must be consulted,(additional controls and equipment requirements may be implemented). <br /> b Intermittent=<two minutes <br /> Continuous=>two minutes <br /> d <br /> UMH:\WPROCESS\25532\WORLDENTERPRISE\WELL DESTRUCTIOMATTACHMENT C WORLD ENTERPRISES HSP TG EDITS.DOC\18-NOV-11\\4-10 <br />