Document 2JD8YEkpZOJqb5EgJ5GRMDN2R

AR226-1995 ^ CC: D. L. Kerbow August 13, 1982 TO: TFE LAB FOREMEN FROM: DAVE RUFFIN NEW C-8 TEST The lab has been looking forward to the new C-8 test for several months since it represents a major portion of our cost savings program ($11,800 Annually). This letter summarizes the current status of the test. Bob Lanyon and FEP Technical have run multiple cross-checks between if the liquid impinger method and the new, dry absorbent tube method. The tubes collect C-8 dust which results in a higher C-8 result in dusty areas (e.g. FEP clean room and conveyor areas). FEP management and Joe Loschiavo (Industrial Hygienist for Teflon) are concerned that the C-8 in the dust is not absorbed into the blood and want a medical study by Haskell to be run to determine it is. if FEP has asked for the following two studies to determine should convert to the dry tube method: the 1ab 1) Particle particles Size Study which will --be Bab Lanyon is collecting samples of sent to Wilnrington for measurement. C-8 dust If the dust is large (30-50 or greater), then it is unlikely that the C-8 is absorbed into the lungs and the Ub would continue to run by the liquid impinger method. If the dust is small ( 10 ), then a Haskell medical study will be run. 2) Haskell Medical Study -- This would be a short term (total of 2-3 .months) study on rats which would measure a rise in C-8 content in the blood when exposed to a C-8 dust environment. It now appears unlikely that the lab will switch to the new method before December or later. Communicate this information to your laboratorians when appropriate. OJR/jyp DOC1358J EID082728