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CONFIDENTIAL This document is
1 subject to restriction by order o f the Circuit Court of Wood County, West Virginia, Case No. 0 1-C-608, and may not be copied or disseminated except by Order of the Court.
TW F003469
COMPANY SANITIZED CBI REMOVED
E ID 179093
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Chronic Off* M o d e lin g
8 Purpose: Identify the design parameters required so that the maximum yearly average daily concentration off-site is below the CEG and on-site is less than the AEL/TLV I Stack Height S Stack Height/building height ratio I Dilution Air flow I Stack tip velocity
i Model used: Industrial Source Complex (ISC v,3) 1 Modeled using RDU meteorology data; FAY data
available this week; model results will be updated.
Preliminary Model Results
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I With reasonable design parameters, the maximum yearly average concentration expected to exist off-site, with ZERO ABATEMENT of process vents and fugitive emissions is 10-30% of the CEG of 0.3^ig/m3
*!:8 I Ail process vent streams will be scrubbed
I<IsIe with expected high efficiency (>90%,
3 .3"P possibly >99.5%)
No. 0J-C-6O8, and may
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CONFIDENTIAL This document is
subject to restriction by order of the Circuit Court o f Wood County, West Virginia, Case No. 01-C-608, and may not be copied or disseminated except by Order of the Court.
TWF003472
COMPANY SANITIZED CBI REMOVED
E ID 179096
Project Environmental
I No discharge of functionalized fluorochemical (F/F) containing wastewater at Fayetteville
l Process will result in discharge of <200kg/yr from DuPont Chambers Works WWTP
1 No discharge of fugitive emissions at ground level
i Air emissions will be minimized
l Ail F/F will passed through scrubber with expected high efficiency
i Community exposure potential will be minimized
I Minimum requirements will be that the yearly average concentration outside of DuPont property will be Community Exposure Guideline (CEG=0.3|ig/m3)
i Employee exposure potential will be minimized with limited use of PPE.
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CONFIDENTIAL This document is subject to restriction by order o f the Circuit Court of Wood County, West Virginia, Case No. 0I-C-608, and may not be copied or disseminafedexcept by Order o f the Court.
TWF0O3474
COMPANY SANITIZED CBI REMOVED
E ID 179098
