Document jmv13M6nZOJDYm3jprEXOd1oy

Memorandum CSCAMSIA PLANT is,, L AIRJPRODUCrSZSS To: R. L. Duggan From: m. L. Coleman VCM Personnel Monitoring for QA Laboratory Personnel Dote: Copies: 26 October 1987 0. W. Kadlec D. E. Hoffman M. 0. Bonin R. E. Gilbert M. W. Ferris Routine personnel monitoring of QA Laboratory personnel has been done for many years. Until October 1985, samples of liquid vinyl chloride from railcar shipments were routinely analyzed in the QA Laboratory and did represent a VCM exposure risk to lab technicians. This analysis has been discontinued and the highest concentration of VCM in any sample sent to the QA Lab is about 50 ppm VCM in slurry samples. This does not constitute any risk of exposure above the TWA action limit of 0.5 ppm for 8 hours. The attached data bears this point out. Sixty eight data points from QA Laboratory technician personnel monitoring are statistically plotted on the attachment-in sub-groups of four. They represent data from March 1985 to present. They show that the average exposure is .009 ppm for an 8-hour period. With an upper control limit of 0.0376 ppm, a process capacity of 5.59 results. The 0SHA standard on vinyl chloride 1910.1017 states in part (d) (2)(ii1) that monitoring may be discontinued when two consecutive monitorings made not less than 5 days apart show exposures below the action level. I believe discontinuation of the QA Laboratory VCM monitoring is warranted due to the very low levels that have been measured in the last two years. MLC:fIs Attachment M. L. Coleman RECEIVED OCT 2 91987 M. J. BONIN AP00026645 9fr99Z000dV 7*) *11 (l 0 0 o v 0 -T> cp 0 d rc Pr-i o r TA * un oo (r p rr o rO-> c*> ?sl V II Oo >- 0 O CA M c> Ua n in o s O % 5