Document ppqgL5gJXrxzKY6O8mNokMVMw

* -1 * 0 0 3 -A A E V . 3-77 E. I. U M M O M t du Pont de N emours & Com pany IHCOflPOnATED S pruance Plant P.O. Box 27001 R ichmond, V irginia 23261 TEXTILE FIBERS DEPARTMENT c c : M. R. W arden - A. A. W rig h t - T .F . - KR..j LL. Rhodes Shepherd T .F . - Wilm. - PP&R - W ilm. F re n c h - CD&P - Wilm. A, B r e w s te r . M. D. - E .R . - W ilm . C. M cK u sick - J . F. Morgan - H askell Lab. G. B. F a i g l e , J r . - J . W. W illia m s R. L. Cook G. R. A nderson D. O. I n s l e e , M. D. P . S. C alvo, J r . H. J . Sampson F i l e : TE-1 February 2 5, 1980 PERSONAL & CONFIDENTIAL TO: G. L . WATTS FROM: E . R. PURCHASE J 0 ,9 8 0 FC-143 FLUOROSURFACTANT ( R e f .: L e t t e r , A. A. W rig h t t o M. R. W arden, same s u b j e c t , 1 0 /2 9 /7 9 ) The r e f e r e n c e l e t t e r re v ie w s i n f o r m a tio n on FC -143, a 3M Company p r o d u c t , used a t P ark ersb u rg in Teflon d is p e rs io n w hich in tu rn i s used in Teflon o p era tio n s a t S p ru an ce. Blood t e s t s on em ployees who work w ith FC-143 showed up to 70 ppm o f o r g a n ic f l u o r i n e i n 3M em ployees and up t o 22 ppm i n P a r k e r s b u r g em p lo y e e s com pared t o a g e n e r a l b a c k g ro u n d l e v e l o f l e s s th a n 1 ppm. No a d v e r s e h e a lth e ffe c t has been d etected in any o f the exposed people. T ests a t H askell L ab o rato ry re v e a le d t h a t FC-143 r e a d ily p e n e tr a te s th e s k in o f an im als and cau ses l i v e r damage and i n h eav y d o se s may c a u se d e a th . I n view o f t h i s I n f o r m a tio n , a d e c is io n was made to a n a ly z e b lo o d sam ples from a sm all group o f S pruance em ployees w ith p o te n tia l FC-143 ex posure in S pinning and F in is h in g and a c o n tro l g roup. The an aly ses o f blood sam ples were c a rrie d o u t a t Jackson L aboratory by th e same group t h a t an aly zed sam ples from P a rk e rs b u rg . The r e s u l t s a re shown below : E m ployee Age A rea T o tal (1) F l u o r i n e , ppm In o rg a n ic O rganic (2) 37 58 25 28 37 32 31 24 35 (1) N o n -v o latile (2 ) By d i f f e r e n c e S p in . S p in . S p in . S p in . F in . F in . C ontrol C ontrol C ontrol 0.34 0 .4 1 0 .1 8 0 .2 3 0 .3 5 0 .1 8 0 .2 1 0 .1 8 0 .1 8 0 .2 1 0 .1 2 0 .1 1 0 .1 5 0 .1 5 0 .1 8 0 .2 0 0 .1 4 0 .1 5 0 .1 3 0 .2 9 0 .0 7 0 .0 8 0 .2 0 0 .0 0 0 .0 1 0 .0 4 0 .0 3 EID107155 oro* M tt-ooJ BETTER THINGS FOR BETTER LIVING . . .THROUGH C H EM IS TR Y 000189 G . L . WATTS - 2 - February 25, 1980 These r e s u lts In d ic a te th a t th e re i s no s ig n if ic a n t exposure to FC-143. T his view i s su p p o rted by p e rso n n e l from H a sk e ll L a b o rato ry , Jack so n L ab o rato ry and th e P a rk e rs b u rg p l a n t , who c o n s id e r t h a t b lo o d l e v e l s o f o r g a n ic f lu o r in e b elo w 1 ppm a r e n o t s i g n i f i c a n t . T h e r e f o r e , we p l a n no f u r t h e r a n a l y s i s o f blood sam ples from Spruance em ployees. To e n s u r e c o n tin u e d p r o t e c t i o n o f p e r s o n n e l a g a i n s t e x p o s u re t o FC -143, o p e ra tin g procedures w ill co n tin u e to be based on no s k in c o n ta c t w ith Teflon d i s p e r s i o n . Ho s p e c i a l p r e c a u t i o n s a r e r e q u i r e d f o r y a r n h a n d l i n g . I n r o u t i n e p erio d ic au d its of o p eratin g area conditions and p ra c tic e s , sp e c ia l a tte n tio n w ill be given to th o se fa c to rs which p ro te c t employees a g a in s t exposure to FC-143. E R P :fs g EID107156 000190 RL00I723