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v <br /> NMI <br /> chevron U.S.A. Inc. <br /> site safety plan <br /> . June 19, 1991. <br /> b. rxc�5� �s��,�niye_ ,R7 : Monitor for L of V°L "plosive <br /> concentmit rations <br /> ions) <br /> with a 0 /LEL Mater to determine whether vapor <br /> within & confined space exceed 201 of the LFL. If readings <br /> K oxcoed 201 LEL, personnel shall <br /> Sand contact thcscfire bdepale rtm�nt. <br /> leave tho site ir..nod lately, <br /> C. �� O for <br /> Monitor the air within the conuidelinfined e;l�sstated in <br /> organic vaporabovo) topdecideID or Lon the respiratory protection <br /> section 8.0 E if the oxygen level in at or <br /> needed. F.ntor the space only <br /> above 19.5%, the %LEL. in below 201, the toxic vapor <br /> concentration in dutornined, and the proper Yespiratory <br /> protection its worn. <br /> oadinga will bo '„aknn at the top, middle and bottom <br /> pXIA or FID r <br /> of a vault, oath a °friar ronfined space to ensure that vapors <br /> shoddo not exceed acceptable levels. <br /> rill monitoring equipment must be calibrated and maintained in <br /> accordance with manufacturer's chockedn(oniinstruzonts which cannot be <br /> calibrated, or the calibration <br /> field calibrated) at the 1:oginninq of each erotic shift, or whenever <br /> there in roasion to suspect tho parformanco of the instrument <br /> (e.g.,Of <br /> •Ibon inconnintant or orrtstic <br /> readings aro obtained) . On the Daily <br /> the calibration or calibration check should <br /> p°Cpniidaix monitoring <br /> Inntrus:sont Calibration Check She P Appendix x• <br /> data swat be recorded on the vapor L:onitoring Shoot, <br /> completed forms <br /> tshould <br /> be siereturned <br /> n ofthecpro7ect.the trio health & Safety <br /> Coordinator at <br /> 19 <br />