Document 1g32zX1v27D804YB32rxpDwza

February 21, 1919 CONTRACT CLEANIMO OF C-54 On January 29th, tha block eontractora performed routina cleaning maintenance on tha c-54 column. All eontractora vora full-face breathing air during tha cleaning and vara monitored uaing 3H 3500 badgaa. Tha resulta of tha monitoring are aa follovat CONTRACT PERSONNEL TIHK (TNA) PPM EXPOSURE BENZENE BUTADIENE Gerald Taylor Alvin Brovn Randy Pitre Freddie Adolph 340 min. 340 min. 340 min. 340 min. .0004 ta. a/-. 0001 .-0004 .0001 NO SAMPLE NO SAMPLE *HDL *MDL ARIA TINS (TNA) PPM EXPOSURE BENZENE BUTADIENE C-54 340 min. *MDL *MDL *hdl stands for Method Determination Limited - Bs - .00097 mg/ml Tha results of this monitoring indicates that there was no exposure problem to either bansana or 1,3 butadiene during this work procedure. Dane L. D'Armond Industrial lygiene Contact LHC 3 DO oo.-; cciNr mr>j