Document amEXXQgqdwJxVaVY5a1b9xYB

0 internal CORRESPONDENCE t UNION CARBIDE CORPORATION old ridgebury road, danbury. ct oeai? TotKwm.) (vion Loaoon Arss j. s. Cornell D. H GltAn H. GcitnbciG s. A. Hart coovTM Dr. Carol Stack Dr. Otto Wong Nancy L. Wheeler T. E. Lawrence a* T. A. Lincoln A. ft. Scnnatter onu,n.nngaL R. N. tuneeler An Su6is May 3. 1983 HSaEA P-2 Attacnad ara mlnutaa of tna last pro]act review maating regarding tna CMA vinyl chloride epidemiology project. Sincerely SGA*jen Att. S. Q. CLfcr- S. 0. Auatln. Sc.D. Corporate Director of Epidemiology UCC 014554 Progress Report on Vinyl Cnloride (Soutn Charleston and Texas City) Study Monday* March 21, 1983 A abating was held on Monday, March 21, 1983 to discuss tna status of activities related to the vinyl cloride epidemiology studies at South Charleston and Texas City. In attendance were Ms. Susan Hart, Mr. Howard Greenberg, Mr. Rob Schnatter, Mr. Hick Wheeler and Or. Susan Austin. 1.0 Rob Schnatter reported the following status for toe Soutn Charleston cohort: 1,182 - total conort sis# 338 - "non-exposed* status from computer tapes 839 - data collection complete, no further problems 5 - record not found on computer tape 2.0 Sob Schnatter reported the following status for Texas Cityi 355 - total conort 277 - data collection complete, no further problems 73 - autoclave chippers 5 - some problems remain, under investigation by Dr. Glenn in Texas City 3.0 Mr. Wheeler remarked tnat although clerical errors may have occurred in selecting the vinyl chloride department codes from employee work records, it was unlikely that 338 errors were made. To account for the 338 persons with undocumented exposure histories. Dr. Austin suggested two steps for further investigation! (1) for any of the 338 employees who are still on the active payroll at South Charleston (or Institute), a guestionnaire could be sent to the employee requesting information on datea of employment in any of the vinyl chloride departments. Mr. wneeler Indicated that it would be reasonable to expect employees to recall the departments in wnich they worked, but not tne code designations associated with those department names) (2) for the remaining inactive employees, a 101 sample could be investigated to determine whether errors in transcriptions were, in part, responsible. 4.0 Mr. wneeler commented on discrepencies between department codes used in the initial vinyl chlorine study and those listed in the Kanawha Valley Epidemiology Study dictionary) (1) Department 078 (Vinyon M) involved relatively hrgn exposures, department named later changed to Vinyl Resins; ucc OU 555 -2- (2) Department 096 (Dynal) should nave been included in the dictionary as a vinyl chloride department; (3) Department 450 included some people who were highest exposed persons to vinyl cnloride (i.e. pipefitters, cleaning workers). Approximately 30% assigned to this department would not be exposed; among the mechanics, of those (4) Not all of Department 223 involved exposure to vinyl chloride (22301 and 22302 were the only vinyl chloride specific departments); (5) Of tne 450 department number series, only 45052, 45056, 45057 and 45058 involved exposure to vinyl chloride; (6) Departments M4M and 080 involved little exposure t vinyl chloride. The total persons assigned to these department codes in the Kanawha Valley study file should be no more than 15 persons. However it is possible that these department codes were used as a slush* code. 5.0 Mr. Schnatter reported that EHA had requested final data forms and tapes for those employees known to have been exposed for whom data collection has been completed to date. Results from Texas City are expected in another week at which time a submission to EHA will be mace. #253311 ucc 014556