Document 6Bnn9LZVJXozMZvEGj8mdB8k6

AR226-1976 Z - i B&?. \-99 E. I. d u P o n t d e N e m o u r s Si C o m p a n y INCORPORATED p. O. Box 1217 Parkebsburs. W. Va. astoi POLYMER PRODUCTS DEPARTMENT A . R . Behnke J. F. Doughty C . R . Campbell D. A. Erdman L. W. Goin T. L. Schrenk . C. E. Steiner G. H. Stoltz P. Thistleton G. E. Washburn R. J, Zipfel J. H. Hale - Wilm April 24, 1981 Robert 1. Wevodau, Jr. Engineering Department Wilmington - L 13W26 GROUND LEVEL C-8 CONCENTRATIONS DOWNWIND OF TEFLON EXHAUST STACKS ' As per our telephone conversation on 4/8/81, please determine eight-hour time-weighted average C-8 concentrations at various distances downwind of C-8 emission sources under the most detrimental weather conditions. Significant C-8 emission sources at Washington Works are as follows: * FEP BUILDING 163 Wet finishing baghouse exhaust Coagulator baghouse exhaust - (These sources are approximately 53 feet apart -- see attached map.) '" TFE - BUILDING' 162 No. 2 fine powder dryer exhaust No. 3 fine powder dryer exhaust (These sources are approximately 42 feet apart -- see attached map.' FEP sources are approximately 555 feet west of TFE sources.) The data you requested are included in Table 1. Notice that for the TFE C-8 sources, 3 separate sets of conditions will exist at various times. Therefore, calculations should be made for each set of conditions. If any additional information is needed, please call me (863-4358). AJP00254I Attachment JGL/nsw Joseph G. Loschiavo There's a world of things we're doing something about EID 079396 TAHLE I 'C-8 EMISION SOHBCES - 7KSHIMSIQHTOHKS Elevation Of Stack (Above Scads) Stack Diameter Air Velocity (fpn) Quantity Of Airflow (cfin) C-8 Concentration (ppm By Volume) Exhaust Air Temperature (C) TEE SEP After ifcv s&otdswn- Tfet Einishino Coagulator 'Ho: '2 Drver 'Ha; '3Dryer 55' 0" 40* 10" I T 10" 7 7 . 10n THB - SEE -- After High Solids 'After 'Hiqh Solids Prod. S Hic|hnr Air Flow PSs. '2 Dryer No. 3 Dryer NO. 2 Dryer No, 3 teyer 77* 10" 77* 10" 77* 10" 77' 10" 12" 1,091 2,500 0.042 10" , 3,183 500 0,014 19 1/2" 2,900 6,000 3.0 19 1/2" 2,900 6,000 3.5 19 2/2" 2,900 6,000 8.5 19 1/2" 2,900 6,000 9.7 19 1/2" 3,865 8,000 6.4 19 1/ 2" 3,865 8,000 7.3 28 28 84 . 84 84 84 84 84 JGL 4/21/81 m zoojiv EID079397 EXD079398 AJP002543 1