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-. 1 l-a BE->- E. I. DU FONT DE NEMOURS & COMPANY UtCfiltTOKATED P. 0. BOX 1217 PARKRSBUR6. W. VA. 26101 POfc-YMER PRODUCTS DEPARTMENT AR226-2137 CC: A. R. Behnke T. L. Schrenk J. P. Donghty c. E. Steiner C. R. Caiapbell P. Thistleton D. A. Erdman G. E. Washbum L. W, Goin R. J. Zipfel J. H. Hale - Wilmington May 12, 1981 Robert I. Wevodau, Jr. Engineering Department Wilmington - r. 13W26 TIME-WEIGHTED AVERAGE AliBTOAI. C-8 COHCEMTRATIOHS AND FOR A TYPICAL DAY AT VARIOUS WASHINGTON WORKS LOCATIONS Attached is information received from the national Climatic Center concerning wind distributions by Pasquill Stability Classes for a typical year in the Parkersburg, West Virginia area. With this weather information along with information sent to you recently regarding Teflon C-B emissions, please calculate the following for those areas listed in Table 1: Expected time-weighted average annual C-8 ground-level concentration- Most likely time-weighted average 8-hour C-8 ground-level concentrations using the prevailing weather conditions. Attachment JGL/nsw Ot^p^^-Iof^ . (_7i o-a C-IVA----I Joseph G. loschiavo There's a world of things we're doing something about EID079394 TABLE I WASHINGTON WORKS LOCATIONS BUIUDIBS OR AREA DIStaNSE FROM CEBTCER OE' TEE DR2ER EXBMJST SBSS (FT.) Adniinxstrative Bidg. - Bidg. 1 Cafeteria - Bidg. 5 Powerhouse - Bidg, 30 Lucite Office Bidg. - Bidg. 143 Teflon Office Bidg. - Bidg. 168 Butacite Office Bidg. - Bidg. 226 R & D BL3g. - Bidg. 22 Incinerator Carr Bidg. - Bidg. 170 Nylon Office Bidg. - HLdg. 150 Delrin Office Bidg. - Bidg. 200 Central Laboratory - Bidg. 3 Building 10 - Office Bidg. 2000 Ft. North of TPE Stacks. C & P Bidg. -.Bidg. 280 1/150 675 375 1,225 700 850 650 2,600 675 1,200 925 800 200 2,000 2,300 DIRECTION FBS3S. CENTER OF TETS DEXER EXBMJST STftCKS 166 141 108 112 248 122 200 90 275 104 230 160 8 0 105 o o JGL M 5A2/81 g m EID079395