July 24*1986# Et* E* YU Webb* c/o 'Hie Ethyl Gasoline Corp* 85 Broadway* Umt York, T;*Y* - .

^appletseat to I n t e n t Koport o f March 23 1981 The field investigation,, ss described in the Interim ftsnort, was carried out an planned except that the period of time was extended to sixteen oaths instead of twelve, primarily for reasons of convenience in the completion of the second aeries of clinical examinations, `on this account there were five rounds of sampling of the urine, instead of the intended four, and the final samples of blood were obtained for comparison with the initial samples after an interval of approximately fifteen oaths instead of twelve.

February 24, 1985.

University of Cincinnati Medicai Center Institute of Environmental Health Kettering Laboratory 3223 Eden Avenue Cincinnati, Ohio 45267 Phone 513 872-5700 December 28, 1982 Patricia H.

INSTITUTE OF ENVI RONMENTAL HEALTH KETTERI NG LABORATORY (513) 87 2-57 00 Re: ER Universit y o f Cincinnat i M edicai Cent er 3 2 2 3 Eden Avenue Cincinnati, Ohio 452 67 January 29, 1980 H.

inst itute of Environm ent al Health Ket tering Laborat ory 322 3 Eden Ave nue Cincinnati, Ohio 45267 Phone 513 872-5700 De ce mbe r 1, 1982 Pat ri cia H.

Rock Island R.R.

I NSTITUTE OF ENVI RONMENTAL HEALTH KETTERI NG LABORATORY (513) 872-5700 University of Cincinnati Medicai Center 3 2 2 3 Eden Avenue Cincinnat i, Ohio 4 5 2 6 7 January 24, 1980 Ms.

December 28, 1983 Dr.

INTER- OFFICE CORRESPONDENCE Copy: Dr.

January 10, 1983 Mr.

I NSTI TUTE OF ENVI RONMENTAL HEALTH KETTERI NG LABORATORY (513) 872-5700 University of Cincinnati Medica!

University of Cincinnati Medicai Center Institute of Environmental Health Kettering Laboratory 3223 Eden Avenue Cincinnati, Ohio 45267-0056 March 1, 1986 Dr.

AP-126-AD2M11/76 E. 1. du Pont de Nemour s a Company AN TI OCH W O RKS = OX 3 ' 0 - AN TI CCH .

December 22 1980 P r.