Document XO3jQpkbXJZKZN6waMJB1aood

Interoffice Communication To A. H. Sather From J. V. Uptain Date January 23, 1980 Subject VCM DOSIMETRY - SAMPLING FREQUENCY A (L&sn. As requested, I have reviewed the results of VCM dosimetry during the last half of 1979 (See Table I) to determine what, if any, changes need to be made in sampling frequencies. Based on these results and the probable exposure potentials, I recommend the sampling frequency scheme in Table II. Note that "quarterly" sampling would be discontinued and the number of samples per year reduced by 310 (22%). c: Plant Manager, Department Heads VAB.0001215729 TABLE I ANALYSIS OF 1979 VCM DOSIMETRY A JOB CLASSIFICATION .1 Vinyl Oper. Superintendent, Supervisor, Relief Supervisor, Operations Engineer 2. Vinyl Shift Supervisor 3. Chief Leads 4. Vinyl Lead Operators 5. Vinyl Utilities 6. Yard Supervisor, Operators 7. Vinyl Operators 8. Maintenance Supervisors 9. All Maint. Mechanics, Helpers, Painters, Utility Techs. 10. Process Mechanical Engineers 11. Safety 12. E I Supervisor Workers 13. Compound Superintendent Supervisors 14. Storeroom Supervisor Workers 15. Lab Supervisors Workers S X 0~ K 0 19 .20 .21 11 20 .30 .21 10 20 1.40 3.09 10 45 .50 1.69 9 12 .23 .29 27 1.63 6.18 4 68 .73 1.21 7 25 .31 .50 4 45 .40 .89 10 7 .07 .12 3 .03 .06 11 .14 .11 7 .10 .22 14 7 .03 .05 15 .13 .24 20 4 8 7 19 8 6 S - No. samples. NOTE: In most cases, for last 6 months of year - in others for _ entire year if needed to increase sample size. X = Average (ppm) sample result. 0--= Standard deviation (ppm) K = No. of results greater than the "Action Level" (0.5 ppm) but less than or equal to the permissable exposure limit (1.0 ppm) - per 100 samples of the job classification(s). 0 = No. of results greater than 1.0 ppm - per 100 samples of the job classification. / j VAB.0001215730 TABLE II PROPOSED SAMPLING FREQUENCY FOR VCM DOSIMETRY MONTHLY BASIS - One Sample Per Month Per Employee in Job Group 1. Vinyl Relief Supervisor 2. Vinyl Operation Engineer 3. Vinyl Shift Supervisors 4. Vinyl Chief Leads 5. Vinyl Lead Operators 6. Vinyl Operators 7. Vinyl Utilities 8. Yard Supervisor, Operators 9. Maintenance Supervisors 10. All Maintenance Mechanics, Helpers, Utility Techs. YEARLY BASIS - One Sample Per Year Per Employee in Job Group 1. Vinyl Operations Superintendent 2. Vinyl Operations Supervisor 3. Process and Mechanical Engineers 4. Safety Personnel 5. E I Supervisor Workers 6. Compound Superintendent $ Supervisors 7. Storeroom Supervisor Workers 8. Lab Supervisors Workers A VAB.0001215731