Document NGbvrvK5J1G9vROR39xeLzJy8
AR226-2641
30
AR226-2641
DuPont Modeling Methodology and Results
Shimizu Site June 2003
About the Model
I Industrial Source Complex Short Term 3 (ISCST3) I Sold/used globally, including in Japan
http://www,phoenix-r.co.jp/products/products.htm
I Input
I Stack height, diameter I Flowrate, temperature I Mass of pollutant (kilogram per hour) I Local meteorological data (Shizouka 1997, 98, 99)
I Output
I Ambient air concentrations in ug/m3 I Max values-and locations outside the property line
Facility
Ambient annual ground level
concentration in ug/m3
Model Calculations
I Ambient air concentrations based on Gaussian Equation
I Concentration a function of a vertical term and a dispersion term
I Vertical term based on stack height, receptor elevation, plume rise, mixing
I Dispersion parameters describe distribution of pollutant in lateral and vertical
Shimizu Modeling Inputs
Stack Parameters
^e-scrubber exil (or tine powder scrubber (called "AC Scrubber" on
jPmoaslp-s)c_iu_fa_b_ere_x_it_fo_r _fin_e_p_ow_d_e_r
scrubber (called -AC Scrubber' on Imap)
[MP-2 scrubber
E Plant: copolymer IplanlforPFAandFEPJ
IP-2 building; copolymer type micro-
powder
Operates 24 hour
per day. 180 days
Per year
Operates 24 hours
per day. 180 days
^ryear Operates 24 hours
per day, 270 days
per year
Operates 24 per day, 200 days
per year
\
^ ^16.1
I) Given in emait of 4/17/03 trpm Hideiaka Hiromaisu: 600
Correct stack height?
Shimizu Modeling Inputs Emissions Rates
I s'"
:
; Source ID |
:
;
Description
j
.
I
'Pre-sctubber exit for fine powler I
i
iscrubber (called "AC Scrubbel" i
[ ...1. . ..J0""'3^ ,,,,.......,,,,,.,,,....,,,,,,.._, I...
I
'Post-scrubber exit for line
I
;
spowder scrubber (called "AC
|
;
2
; Scrubber" on map)
;
I Emission;
'
Location
I Rate, lEmission I
I kg/hr ;Rate, gte I
I I I'
\
"J'!6"'.,,,,.^...,..!,...1?'24,...]
.. ...
I
|
|
|
\ ."PSSTJ
|
|
D Plant
: 0.24 I 0.0667|
|
;
I
3
|DBCSciubber
|E Plant: copolymer plant fcr I
'
|
PFA and FEP
I
..,........,.,L...0.07
\
a0194J
:
I
4
-
-MP-2 scrubber
: MP-2 building: copolymef ;
I
|
type micro^xMider
I 0.125 |
| 0.0347I
Preliminary Modeling Results
I Maximum annual concentrations calculated as 14 ug/m3
I Point of maximum concentration at south boundary of site (on property line)
Contribution of Sources
Source ID
1
2
I
Description
IPre-scrubber exit for fi ne ipowder scrubber (called
:"AC Sciubber" on map)
: Post-scrubber exit forfine
Ipowder scrubber (called I"AC Scrubber on map)
Location 0 Plant D Plant
j
sHeight, m
Contribution, j
|
ug/m3 : Contribution, % |
7.0021
50
15
3.345i
24
IDBC Scrubber :MP-2scnjbber
: E Plant: copolymer ; IplantfbrPFAandFEP- 18.2 ''^""MP-abuJilding;" -;"-- -
icopolymer type micro-, 16.1
2.953!
0.771! "totai ="14.0711