Document VJaxdMg0woRz0nLXqaRykRaVZ

&>^S^>^5^'&^^&C"SK&,*'2''-i!S!v& AR226-2145 /*' i - t . > TO : FEOM: Gary L REERIDGE H. FUXOI Attachment #6 SUBJECT:C-3 Air Eaissions (and Estiaation of Comounitj' [apactj m -y iJs3!riisri2iSii",",to,`'"u*!*" * B ^ re la tio n between C-8 concentration and stack height after scrubbing hr DuPont stack aodei is as E :to tal s ite emission ra te 0.060 Lb/h CEG:24-hour concentration goal 0.3 g /r f Ci<:estiaated 24-hour concentration u g/nf C ,, => 32,000 XQ.060 x C tO .;)* 1 " - 1.04 > 0.3 (stack height 49 .2 ft [15a]) C,* * 32,000 X0.060 x(6 5 .6 )-* " * 0.598 > 0 .3 (stack height 65.6 ft [20a]) C, = 32.000 X0.060 x (95. 1)-1 " = 0.292 < 0.3 (stack height 95.1 ft [29a]) Consequently 95.lft(29) is required for stack height. 4?-Zf t< 1 5 ,)* the valtt0 f C,. is 0 . 1 5 3 ,/g /rf th at is auch le ss than CEG value S u t K w rate!). " f d" 3 tie I w <Bosanquet- Carey Md H aU ons equation and ? itu a *ion- ** l s ,verY d i f f ic u l t to in s ta ll a n e t 95.1ft(29a) stack, ack height is being planned as 49.2ft(15u) in accordance with these re su lts. * II aoove our e s tia a tio n aethod ion*t be accepted by you. me re fin e d eaissirm caintia*TM* S S n g S i ! ? 0 i SerViC0 DiViSion 3t LoUViers w i d i n - f ta Air Q uality and Hazards Sorry to have troubled you, but would you tak e investigations as follow s ? L 3 r f X 2 S > " th0 M 2 .In case of your nonacceptanca JaP!U,eSe d0#" tiC * " ta accepted b' DuPont ? la the refined eaiasion calculation practicable v ith following data ? ' C " M "u` " -> *. SSCffi,,hJBrviC9,1>IVISioa,ofAir<taa,,ty-Barts If It will be required the official request procedures, please let .e know the wav to re q u ire th e re fin e d emission c alcu la tio n performance. 3. DATA [case 1] E:C-8 to ta l s i t e e aissio n ra te 0.060 Lb/h H:Stack height for s ite eaission 49.2 f t G:Air flow ra te 304,624 f t '/ h a t 46*C d:D istance fro* e aissio n point to nearest plant boundary 328 f t [ease 2] E:C-8 to ta l s i t e e aissio n ra te 0.060 Lb/h I:S tack height fo r a ite eaission 55.5 f t G:Alr flow ra te 304.624 ft* /h a t 461C d:D lstance froa e a iss io n point to n earest p la n t boundary 328 f t 5 M Ko> Ufc. 4oX E ID 944538 4.Other inquiries C-8 scrubber packing "The reason to se le c t 1-1/2* PALL-RING (According to Japanese packing nanufactu rer. PALL-RING d o e sn 't perform e ll.) f a s i t selected by the reason th a t i t is easy to be cleaned in disassenbly ? I t Is considered th a t both AP and Hoe (or absorption efficiency) t i l l be advantageous i f HEIREX is used. I s n 't i t adopted owing to cleaning d iffic u lty ? BEST REGARDS. 2 Not o ou* i EX D 944539