Document JvJjKqj6YX5YYbwrvr25J9D0K
AR226-2277
Robert I Wevodau 05/21/2002 09:36 AM
To:
cc: Subject:
George L Clowes_Jr/CL/DuPont@>DuPont, Ravinder Sinah/CL/DuPont@DuPont, Michael T Evans/AE,'DuPont@DuPont, Michael G McClusky/AE/DuPont@DuPont, Cynthia E Read/AE/DuPont@DuPont, Ta-Wei Fu/SE/DuPont@DuPont Stephen J Gissy/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Karl G
Kronberg/AE/DuPont@DuPont C8 Modeling
We are anticipating that TERA will soon release an annual exposure level for C8. Recent modeling studies
have indicated that we are at 0.30 micrograms/cubic meter for estimated production rates for year 2003Steve Gissy has asked that we verify the data that went into the recent C8 modeling effort, and be
prepared to respond quickly with alternatives when the new annual exposure guideline is released. Following is the basis for the modeling studies for year 2003:
Area Production (Ib/yr)
QPU Fraction to Dryer
Scrubber Efficiency
FP/D FP/D FP/D FEP FEP FEP PFA
4,300,000 2,700,000 2.500,000 3,903,900 3,903,900 3,346,200 1,977,000
(FP-1?
(FP-2) (PP-3)
(LI)
(L2) (L3)
0.0025
0.92
0.0035
0.92
0.004B
0.92
0.0051
0.0051
0.0051
0.0065
0.70
0.40 0.40 0.40
85% 85% 85%
93%
93% 93% 93%
George and Raj,
Please confirm the estimated 2003 production rates. Mike M,, Mike E. and Cynthia, Please confirm that the QPU and Fraction to Dryer values are the correct ones to use.
Ta-Wei,
Please provide me with estimated scrubber efficiences to use for year 2003 emission estimates.
I need this information by Thursday of this week. Thanks for your help.
Bob Wevodau
TWF023013 EID515127
Ravinder Singh 05/21/2002 10:34 AM
To: cc:
Subject:
Robert I Wevodau/SE/DuPont@DuPont George L Clowes_Jr/CUDuPont(a>DuPorrt, Michael T Evans/AE/DuPont@DuPont, Michael G
McClusky/AE/DuPont@DuPont, Cynthia E Read/AE/DuPorrt@DuPont, Ta-Wei Fu/SE/DuPont@DuPont, Stephen J 6issy/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPont
Re: C8 Modeling |||
Updated FP/D production figures are as follows:
FP-1 FP-2 FP-3
4,900,000 2,600,000 2,600,000
Haj S.
Robert I Wevodau
FR
Robert I Wevodau 05/21/2002 09:35 AM
To:
cc: Subject;
George L Clowes Jr/CUDuPont@DuPont, Ravinder Singh/CL/DuPont@DuPont, Michael T Evans/AE/DuPont@DuPont, Michael G McClusky/AE/DufontODuPont, Cynthia E Read/AE/DuPont@DuPont,
Ta-Wei Fu/SE/DuPont@DuPont Stephen J Gissy/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Karl G
Kronber9/AE/DuPont@DuPont C8 Modeling
We are anticipating that TERA will soon release an annual exposure level for C8. Recent modeling studies
have indicated that we are at 0.30 micrograms/cubic meter for estimated production rates for year 2003. Steve Gissy has asked that we verify the data that went into the recent C8 modeling effort, and be prepared to respond quickly with alternatives when the new annual exposure guideline is released. Following is the basis for the modeling studies for year 2003:
Area Production ( Ib/yr)
QPU Fraction to Dryer
Scrubber Efficiency
FP/D FP/D FP/D FEP FEP FEP PFA
4,300,000 (FP-1) 2,700,000 (FP-2)
2,500,000 (PP-3) 3.903,900 (L1) 3,903,900 (L2) 3.346,200 (L3)
1.977.000
0.0025
0.92
0.0035
0.92
0.0045
0.92
0.0051
0.0051
0.0051
0.0065
0.70
0.40 0.40 0.40
85% 85% 85%
93%
93% 93% 93%
George and Raj,
Please confirm the estimated 2003 production rates.
Mike M-, Mike E. and Cynthia.
TWF023014 EID515128
Please confirm that the QPU and Fraction to Dryer values are the correct ones to use. Ta-Wei, Please provide me with estimated scrubber efflciences to use for year 2003 emission estimates. I need this information by Thursday of this week. Thanks for your help. Bob Wevodau
TWF023015 EID515129
^
R
^,.. Robert I Wevodau 06/21/2002 12:08 PM
To: cc: Subject:
Ta-Wei Fu/SE/DuPont@>DuPont
Re: C8 Modeling ||
Ta-Wei,
The 0.3 microgram/cubic
exposure.
meter
is
the
concentration
calculated
by
the
model
for
There is not
a
limit on
concentration
at the vent point,
but
there
is a
maximum off-plant limit
annual
on the
rate.
mass emission
Bob
TWF023016 EID515130
