Document V3r8mzd427xNpbMjgdoKo6r18

April 14, 1971 J.F. Cole, Sc.D., Manager .Environmental Health International Lead Zinc Research Organization, 292 Madison Avenue New York, New York 10017 Inc. Dear Jerry: In accordance with your request, I am sending this expense account to you. I am not sure just how you feel about the entire situation a3 to the disposition which is to he made of lead-containing antiknock materials, so far as the U.S.A. and Canada are concerned. However, I believe, on the strength of the present program of the investigation of the tolerable concentration of leaa in the air, that it will be possible, short oi' some unforeseen governmental action, to continue, for several years - perhaps eight or ten - on a decreasing level of their concentration in gasoline, before eliminating it altogether. Meanwhile, it seems likely to me, in speaking mainly in terms of the behavior of the public, that the present deep concern about this will taper off and that some low concentration will continue to be useu. If such is tho case, however, the industry will have to do certain things to consolidate their position for the future. Therefore, it will be necessary to have the information which we have been seeking in unequivocal terms. I think, therefore, that this work at Albany should be continued until the proper level has been established. It may be at 5 miciograms per cubic meter of air. It might be lower, but whatever it turns out to be, in relation to our own criteria of a satisfactory answer, it should be established. It was a wet evening on which to return to Cincinnati, but I made it before ten o'clock, and this morning, I find myself glad, indeed, that it was not necessary to spend the night in Syracuse. I had a good night's sleep, after a long but interesting day. With kindest regards. Sincerely, RAX:wb enciosure Robert A. Kehoe, M.D. Professor Emeritus of Occupational Medicine