Document 6B4eMBaq9RKZ3jwDmy5D1GZZ4

ABDOOO18602 VCM STEL (Short Term Exposure Limit) Monitoring Turnaround Maintenance Activities- General Mechanics/Helpers and Plant Utility- Vinyl Employee' Activity Date: Aug. 2000 TTjrijfeT igesuits1. ;(mihvs)1! ;-':(ppm) 8/24/00 Justin Sanders Opening EX-129 3 6.4 8/24/00 8/24/00 8/24/00 Ricky Hollis Luke Threadgill John Paul Blaylock Removing valve from VCM line (EX-129) 5 18 Blanking drain lines- S. VCM Receiver 14 <0.31 Opening Manway to S. VCM 8 28 Receiver An area sample taken at the manway of the S. VCM Receiver while the unit was cleared of employees returned a result of 25 ppm. Date: Dec. 1999 December '99 Turnaround Date 12/4/99 Employee Morgan, Jimmy Activity Blanking VCM Line-R744 Time (mins) 20 Results1 (ppm) 0.07 12/4/99 Franks, Freddie Blanking VCM Line-R745 20 0.14 12/4/99 Franks, Freddie Blanking Recovery Valve-R743 12 0.25 12/4/99 Howell, Lee Roy Blanking VCM Line-R746 15 0.13 12/4/99 Parson, Willie Blanking Lines-N Knockout TK 12 1.4 12/7/99 Staten, Tommy Valve Work-Old Unit Fresh VCM The OSHA-STEL for Vinyl Chloride Monomer is 5 ppm for a 15 minute period 7 7.7