Document ByEDpr8N6Xn8jLyyREGLV2jmL
AR226-2134
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COMPANY SANITIZED CBI REMOVED
CONFIDENTIAL This document is
subject to restriction by order of the Circuit Court of Wood County, West Virginia, Case No. 01 -C-608, and may not be copied or disseminated except by Order of the Court.
TWF003469
EID179093
Chronic Off-Site Exposure Modeling
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a Purpose: Identify the design parameters required that the maximum yearly average daily concentrat off-site is below the CEG and on-site is less than th AEL/TLV
I Stack Height I Stack Height/building height ratio
I Dilution Air flow
I Stack tip velocity
I Model used: Industrial Source Complex (ISC v.3)
I Modeled using RDU meteorology data; FAY data available this week; model results will be updated.
Preliminary Model Results
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With reasonable design parameters, t maximum yearly average concentratio expected to exist off-site, with ZERO ABATEMENT of process vents and fug emissions is 10-30% of the CEG of OJ^ig/m3
Afl process vent streams will be scrub
with expected high efficiency (>90%,
possibly >99.5%)
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CONFIDENTIAL This document is
subject to restriction by order of the Circuit Court of Wood County, West Virginia, Case No. Ol-C-608, and may not be copied or disseminated except by Order of the Court.
TWF003472
COMPANY SANITIZED CBI REMOVED
E1D179096
Project Environmental
Strategies
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B No discharge of functionalized fluorochemlcal (F/F)
I
containing wastewater at Fayetteville
I Process will result in discharge of <200kg/yr from DuPont Cham
Works WWtP
a No discharge of fugitive emissions at ground level
s Air emissions will be minimized
I Alt F/F will passed through scrubber with expected high efficienc
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B Community exposure potential will be minimized
I Minimum requirements will be that the yearly average concentra outside of DuPont property will be Community Exposure Guidelin (CEG=0.3pg/m3)
I Employee exposure potential will be minimized with
limited useofPPE.
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CONFIDENTIAL This document is
subject to restriction by order of the Circuit Court of Wood County, West Virginia, Case No. Ol-C-608, and may not be copied or disseniinaTed^ixcepbt y Order of the Court.
TW003474
COMPANY SANITIZED CBI REMOVED
EID179098