AQ_F_0900009_20130416_CMPL_Fac-Ltr

Qf o N Tr DuPont Chemicals&Fluoropmducts
f Fayetteville Works Plant
22828 NC Hwy 87 West
Fayetteville,NC 28306 7332
April 15, 2013
Ms. Jenny Kelvington
NCDENR—Division of Air Quality
Permits Section
1641 Mail Service Center
Raleigh,NC 27699-1641
SUBJECT: Title V Air Permit—502(b)(10)Notification Form
Air Quality Permit No. 03735T37
DuPont Company—Fayetteville Works
Facility ID: 03/09/00009
Dear Ms. Kelvington:
Enclosed is a copy of the 502(b)(10) Notification Form to allow for a minor modification of the
Butacite® Polyvinyl Butyral Flake Dryer's Baghouse (fabric filter) at the DuPont Company —
Fayetteville Works.
As required by the subject permit, an original and two copies of the notification have been sent to
the attention of Mr. Steven Vozzo at the Division of Air Quality's regional office in Fayetteville.
If you should have any questions additional or need additional information, please feel free to
contact me at(910) 678-1155.
Sincerely,
Michael E. Johnson
Enviromnental Manager
Enclosure
cc: U.S. EPA Region 4, Air and EPCRA Enforcement Section, Atlanta, GA
E.I.du herds Nemours and Company

502(b)(10) Notification Form
Site Name: DuPont Company-Fayetteville Works Facility Contact: Michael E.Johnson ( ®
Site Address (911 Address): 22828 NC Highway 87 W Contact Phone Number: [phone]
City/County: Fayetteville/Bladen County Contact Email Address: [e-mail] CDIENR
Current Air Quality Permit No. 03735T37 Regional Office Where Facility is Located: Fayetteville 3/21/2013
502(b)(10) QUALIFICATION CHECKLIST
❑� This change does not violate any existing requirement in the current Title V air quality permit.
This change does not cause emissions allowed under the permit to be exceeded.
This change does not require a case-by-case determination(e.g.SACT)
This change is not a modification under Title I of the federal Clean Air Act.
This change does not alter any existing monitoring, reporting or recordkeeping provisions in my current permit
This change does not require a change to an existing permit term that was taken to avoid an applicable requirement. (e.g. PSD avoidance condition)
❑� This change does not require a permit under the NC Toxics program.
❑v This change will not be made until at least seven(7)days after the NC DAQ receives written notification.
0 JA copy of this notification form will be attached to my permit until the permit is revised at the next significant modification or renewal.
DESCRIPTION OF CHANGE
Provide a brief description of the change,the anticipated_ date on which the change will occur,and any permit term or condition no longer applicable as a result of the change. Attach a process flow
diagram if relevant.
The Butacite® Process' polyvinyl butyral flake dryer dust emissions are controled by a cyclone separator(ID No. BCD-Cl)followed by a
"Baghouse"that is comprised of 540 fabric filter bags, each 100 inches long. Currently the Baghouse filter bags total 6,858 square feet of filter
area. To comply with a National Fire Protection Association standard (NFPA 68 Section 8.7), seventy six(76) of the filter bags closest to the
Baghouse's rupture panel must be shortened from 100 inches to 36 inches so as to not obstruct the rupture panel's pressure relief area. This will
result in a reduction of filter area from 6,858 square feet to 6,245 square feet. The flow rate though the Baghouse will remain 45,000 ACFM.
t Newor Modified + Projected Emissions
ID No. Applicable Standards Proposed Monitoring
Source/Cont rol Device Change
BS-C/BCD-C2 15A NCAC 2D .0515 Once a month observation of the emission point of the negligible
Butacitery PVB flake affected source for any visible emissions above normal.
dryer/ DuPont will re-establish normal visible emissions within thirty
fabric bag filter BS-C/BCD-C2 15A NCAC 2D .0521 (30) days of reducing the filter area of the Baghouse. negligible
SIGNATURE OF RESPONSIBLE OFFICIAL/AUTHORIZED CONTACT
Name(typed): Ellis H.McGaughy Tide: Plant Manager
X Signature: L/I ��� ) Date:
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