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AR226-2336
DuPont Modeling Methodology and Result
DRAFT
Shimizu Site
June 2003
About the Model
Industrial Source Complex Short Term 3 (ISC
Sold/used globally, including in Japan
http://www.phoenix-r.co.jp/products/products.htm
Input
Stack height, diameter Flowrate, temperature Mass of pollutant (kilogram per hour)
Local meteorological data (Shizouka 1997, 98, 99 Output
Ambient air concentrations in ug/m3 Max values and locations outside the property lin
'asr
Prevailing wind
Facility
Ambien ground
concent ug/
Model Calculations
Ambient air concentrations based on Gaussia Equation Concentration a function of a vertical term a dispersion term Vertical term based on stack height, recepto elevation, plume rise, mixing Dispersion parameters describe distribution o pollutant in lateral and vertical
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Shimizu Modeling Inputs
Stack Parameters
Source ID 1 2 3
4
Description
Location
Operations
Height, m Diameter, m
Flowrate m3/hr
Pre-scrubber exit for fine powder
Operates 24 hours
scrubber (called "AC Scrubber" on
per day, 180 days
map)
D Plant
per year
8
0.68(1)
2400
Post-scrubber exit for fine powder
Operates 24 hours
scrubber (called "AC Scrubber" on
per day, 180 days
map)
D Plant
per year
15
0.6
9600
Operates 24 hours
E Plant; copolymer per day, 270 days
DBC Scrubber
plant for PFA and FEP
per year
18.2
0.6
1620
MP-2 building; Operates 24 hours
copolymer type micro- per day, 200 days
MP-2 scrubber
powder
peryaar
j 16.1
10.6 assumed
7500
^ ^ r
/ (1) Given in email of 4/17/03 from HIdelaka Hiromalsu: 600 sq mm square diam?fer. Converted ta effective diameter of 0.68 meters.
Correct stack height?
Shimizu Modeling Inputs Emissions Rates
Source ID
Description
Pre-scrubber exit for fine powder
scrubber (called "AC Scrubber"
1
on map)
Location D Plant
Emission
Rate, kg/hr
Emissi Rate, g
0,24
0.0
Post-scrubber exit for fine
powder scrubber (called "AC
2
Scrubber" on map)
D Plant
0.24
3
DBC Scrubber
E Plant: copcdymer plant for
PFAandFEP
0.07
0.06 0.01
4
MP-2 scrubber
MP-2 building: copolymer type micro-powder
0,125
0.03
Preliminary Modeling Results
>ST '.'%.;:,).,,(..
Maximum annual concentrations
calculated as 14 ug/m3
Point of maximum concentration at sou boundary of site (on property line)
-150
-100
-50
0
50
100
150
200
250
300
Contribution of Sources
Source ID
1
2
3
4
Description Pre-scrubber exit for fine powder scrubber (called "AC Scrubber" on map) Post-scrubber exit for fine powder scrubber (called "AC Scrubber" on map)
Location D Plant D Plant
Contribution,
Height, m
ug/m3
Con
8
7.002
15
3.345
DEC Scrubber MP-2 scrubber
E Plant: copolymer plant for PFA and FEP
MP-2 building; copolymer type micro-
18,2 16.1
2.953
0.771 total = 14.071