Document z3b9DG6ZOnpm6G1a34vyyO4z

To: Location: From: H. Gaffnay Chicago " N. D. Yin Date: HA! 1 i 1* Copy to: May 5, 1382 J. C. Caporoaai - MA A* C. Bell - ** A. Petersen - NA Location: Wayne Subject: T.KAD Reference: NOISE RESULTS, 1st Quarter, 1342 , conducted. This was done by measuring the amount of lead retained by a finger after pressing on a workbench. Discussion and Recommendations I. Lead Exposure a. The average of air lead seems to drop considerably as comparing with previous results. (Table A-4 and A-8). b. Wipe samples results indicated the lead contamination in the lunchroom reduced significantly. However, following areas are still considered having relative high lead and need to be cleaned thoroughly. These areas are: 1. Lunchroom - Top of drinking fountain and bench chair. 2. Office - Mr. Gaffney and Kathy's desk, c. On Table A-6, results indicated that, after washing, the amount of lead carried by the employees' hands is minimum. This proves that ,the personal hygiene practice is a top priority rule to prevent the ingestion of lead. In addition, finger-tip test showed that, with the finger tip skin surface of h sq, in., it could retain about 600 ug of lead, which equals to*approximately 1,14 ug/dl of blood lead if swallowed by a normal person (Table A-6,7). This means that if an individual accidentally puts his finger into his mouth everyday, by the end of the month he will have 34 ug/dl of additional blood lead in his body. MA 839 REV. 2-79 2-79' CYW1 3-000785 II, Noise. Exposure Although the average personal noise level was lower than before (my I.H. survey report, September 14, 1981), without hearing protection, 43% of employees' exposures were over the action level of 85 dBA (TWA). By using the Bilsom "soft ear" protector, the employee's exposures should be in compliance with OSHA noise limit. Implementation of the hearing conservation program is still required, as: a. Establish baseline audiogram by August 22, 1982. b. Ensure that hearing protectors are worn by affected employees. c. Provide noise training, etc. 1 NDY:eh 4/9742M-2 Attach. CYWI 3-000786 Name R. Thompson C. Davis G. Dabbs TABLE A-l Results of Lead Sampling in Chicago Plant 2nd Shift Job Foreman P. 0. 800 Litharge Opr. Date 3/16/82 3/16/82 3/16/82 Time 1606-2022 2022-2352 (466 mins) Air Volume (1) 384 315 Results (mg/M3) 0.33 3.09 8-hr TWA Exposure (mg/ M3) 1.53 1615-2035 2035-2350 (455 mins) 390 293 1.72 1.34 1.47 1619-2035 2035-2357 (458 mins) 384 303 1.27 1.65 1.37 Average 1.46 NDY:eh 4/9742M-3 iRf;.. CYWI 3-000787 N14649.01 Name E. Gross E.. Mayes J. Jones TABLE A-2 , Results of Lead Sampling in Chicago Plant 3rd Shift Job Litharge Opr. Foreman P. 0. 800 e Date 3/16/82 3/16/82 3/16/82 Time 0005-0355 0355-0756 (471 mins) Air Volume (1) 345 362 Results (mg/M^) 2.14 2.40 8-hr TWA Exposure (mg/M^) 2.23 0010-0405 0405-0742 (452 mins) 353 326 1.84 1.26 1.47 0014-0408 0408-0740 (446 mins) 351 318 1.34 0.19 0.74 Average 1.48 NDY:eh 4/9742M-4 CYWI 3-000788 Name S. Tate F. Powers J. Hodge G. Burton ' W. Bell C. Hopkins W. Lee A. Howard L. Haye TABLE A-3 Results of Lead Sampling in Chic ago Plant 1st Shift Job Blender/ Packer Date 3/18/82 Time 0915-1205 1205-1540 (385 mins) Air Volume (1) 252 318 Results (mg/ M*^) 0.58 0.72 8-hr TWA Exposure (mg/M^) 0.52 Warehouseman 3/18/82 0922-1200 1200-1601 (399 mins) 233 357 0.37 0.15 0.20 Litharge Opr. 3/18/82 0924-1202 1202-1549 (385 mins) 234 336 1.84' 0.93 1.05 Janitor 3/18/82 0929-1156 1156-1559 (388 mins) 215 360 0.21 0.55 0.34 P. 0. 800 3/18/82 0937-1210 1210-1555 (378 mins) 226 333 0.39 2.39 1.24 Maintenance Opr. 3/18/82 0940-1154 1154-1547 (367 mins) 198 348 2.01 0.64 0.87 Maintenance 3/18/82 0947-1155 1155-1545 (358 mins) 189 340 1.31 0.56 0.62 Foreman Day Supervisor 3/18/82 3/18/82 1017-1215 1215-1552 (335 mins) 1030-1158 1158-1504 (274 mins) 175 321 130 275 1.62 1.08 0.89 0.20 0.31 0.16 NDY :eh 4/9742M-5 Average 0.654 CYWI 3-000789 Job Process Opr. Litharge Opr. For an an Maintenance Warehouseman Janitor Blender/Packer TABLE A-4 Summary of Lead Exposures by Job (1st Quarter 1982) Name/Work Shift W. Bell J. Jones C. Davis (1st Shift) (2nd ") (3rd ") J. Hodge G. Dabb s E. Cross (1st Shift) (2nd " ) (3rd " ) L. Maye A. Howard (1st Shift) (1st " ) R. Thompson (2nd " ) E. Maye (3rd " ) C.Hopkins (1st Shift) W. Lee (1st " ) - F. Powers G. Burton (1st Shift) (1st Shift) S. Tate (1st Shift) 8-hr TWA Exposure (mg/M3) 1.24 0.74 ' 1.47 Average 1.15 Average 1.05 1.37 2.23 1.55 Average 0.16 0.89 1.53 1.47 1.01 Average 0.87 0.62 0.75 0.20 0.34 0.52 Plant Employees' Overall Average 0.789 NDY:eh 4/9742M-6 CYWI 3-000790 TABLE A-5 Wipe Sample Results Location LUNCHROOM - March 18, 1982 .1 On the corner of the eating table, facing the entrance 2. On top of drinking fountain 3. Handle of refrigerator 4. On top of bench chair 5. Handle of the door 6. Handle of oven 7. Press-button of fountain 8. On top of First Aid kit 9. Blank control (with D.I. H20 on filter) 10. Blank control filter OFFICE AREA - March 19, 1982 .1 General office desk (vacant) 2. On top of Jackie's desk 3. On top of Kathy's desk 4. On top of Mr; Gaffney's desk NDY:eh 4/9742M-7 Lead (Microgr ams) Present Past 2.7 115 37.7 185 15.5 12.6 ' 19.3 80 0.1 0.1 39.5 312.3 95.2 381.8 219.9 .23.8 6.1 40.2 59.5 CYWI 3-000791 TABLE A-6 Personal Wipe Sample Results April IS, 1982. 11:30 a.m. 1. BEFORE WASHING a. C. Davis b. J. Boyce AFTER WASHING a. C. Davis b. J. Boyce 3. FINGER-TIP TEST* a. Wrapped with filter b. Wiped by filter ' Right Hand Le ft Hand Right Hand Left Hand Right Hand Left Hand Right Hand Left Hand Lead (Micrograms) 152 181 151 152 6.0 3.2 1.8 4.6 252 687 * A finger was either wrapped with wet filter when pressing on the workbench or wiped by the wet filter after the pressing. NDY: eh 4/9742M-8 CYWI 3-000792 TABLE A-7 For 600 ug of lead, assume 10/100 will be transferred into the blood, that is 60 ug. Normal human with 70 kg weight has average of 5 kg blood, which equals to 52.6 dl. dl x 0,95 = 100 g. Lead absorped in the blood: 60 ug/52.6 dl = 1,14 ug/dl Monthly absorption: 1.14 ug/dl x 30 days = 34,2 ug/dl - month. NDY:eh 4/9 742M-9 CYWI 3-000793