Document JZRDpNOOday30D8kd6zaa68e

<j p * `AA lu : cSTMUSHCD 1802 E . I. du P ont de Nem o urs S Company IN C O R P O R A TE D P. O. B o x 1217 P a r k e r s b u r g . W . V a . 2S101 POLYMER PRODUCTS DEPARTMENT / b 3,0 Jack J. Schra. Regional Adm., EPA, Region I I I Permit Programs Monitoring Unit, 3EN43MI 6th and Walnut S t r e e t s P hilad elp hia, Pennsylvania 19106 C,.. Ronald-.Sandy, S u p e r v is o r W, 'Va. D iv . o f Water Resources 6321 Emerson Avenue Park e rsb u rg , WV 26101 June 9, 1981 CERTIFIED MAIL RETURN RECEIPT REQUESTED David W. Robinson, C h ie f W. Va. D i v i s i o n of Water Resources 1201 Greenbrier S tr e e t C harleston, WV 25311 Dear S ir : T h is l e t t e r i s to inform you o f t o x i c i t y in form ation we have received from our s u p p l i e r o f the s u rf a c t a n t ammonium p e rflu o ro o c ta n o a te , a l s o known as FC-143, which is present in our o u t fa ll 005 (permit (WV000127S) in a concentration o f about0.1rng/L. The 3M Company has advised us that t h i s m aterial has been found to cause d e fe cts in the unborn when fedby stomach tubes to female r a ts in a p re lim in a ry la b o r a to ry experiment. Du Pont uses FC--143 in the manufacture o f fluoropolym er r e s i n s . Much more t e s t i n g must be conducted to determine the s i g n i f i c a n c e of the 3M experiment. As part of the ongoing program to determine the sa fe ty of our m a te r ia ls, both Du F o n t 's Haskell Laboratory and 3M are now p lan n ing more d e ta ile d experiments. However, we have taken the precaution of r e a s s i g n in g female personnel of childbearing c a p a b ilit y to areas o utside those in which fluoropolymer resins are manufactured or FC-143 is handled. At th is time, we do not know the s i g n i f i c a n c e , i f any, of the p re lim in a ry animal experiment. FC-143 has been in use f o r decades without apparent adverse a f f e c t s in humans. I f you need a d d itio n a l in f o r m a t io n , please l e t me know. ACHrhcw 1306A Environmental Control Consultant Washington Works l3> T h e re 's a w orld of things w e're doing so m e th in g about Attachment 3