AQ_F_0900009_20211102_CMPL_CmplDetLtr

ROY COOPER.
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Governor !
ELIZABETH S.BISER '°n
Secretary -x"
MICHAEL ABRACZINSKAS NORTH CAROLINA
Director Environmental Quality
2 November 2021
CERTIFIED MAIL
RETURN RECIEPT REQUESTED
Ms. Dawn Hughes, Plant Manager
Chemours Company - Fayetteville Works
22828 NC Highway 87 West
Fayetteville,NC 28306-7332
Subject: Approval of Carbon Adsorber Replacement Schedules for PPA and VE-South
Chemours Company - Fayetteville Works,Air Permit No. 03735T48
Fayetteville, Bladen County,NC 06/0900009 Fee Class: Title V
Dear Ms. Hughes:
On 15 July 2021,the Division of Air Quality (DAQ)received letters from Chemours
Company- Fayetteville Works (Chemours) proposing a carbon replacement schedule for the
Polymer Processing Aid(PPA) Carbon Adsorber (ID No. ACD-A2) and for Vinyl Ethers South
(VE-South) Indoor Fugitives Carbon Adsorber(ID No. NCD-Q4). In accordance with Title V
Permit No. 03735T48, Permit Condition 2.2(D)(1)(c)(i), Chemours is required to conduct
performance tests on a quarterly basis to develop a carbon replacement schedule for both
adsorbers based on hours of operation,production rate, or other approved parameters.
Chemours proposed the following: 1)Replacing the carbon in the PPA Carbon Adsorber
(ID No. ACD-A2) when the carbon bed operating times reach 2,950—3,050 operating hours, and
2) Replacing the carbon in the VE-South Indoor Fugitives Carbon Adsorber(ID No. NCD-Q4)
annually during inspection. DAQ has reviewed the data from performance testing conducted
since June 2018 to determine if the data supports this proposed schedule. DAQ has focused its
review on testing conducted since the end of 2019 when there were several equipment
configuration changes made to several processes that include VE-South and PPA. The test data
from 2020 and 2021 reflect operation and performance of the control systems since these
changes were completed.
Based on our review of the quarterly performance test data submitted by Chemours since
installation of the carbon adsorbers, DAQ approves the following carbon replacement schedules:
1) Replace the carbon in the PPA Carbon Adsorber when operating times reach 2,950—3,050
operating hours, and 2) Replace the carbon in the VE-South Indoor Fugitives Carbon Adsorber
annually (once every 12 months).
�� North Carolina Department of Environmental Quality I Division of Air Quality
Fayetteville Regional Office 1 225 Green Street,Suite 714 1 Fayetteville,North Carollna28301
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Ms. Dawn Hughes
2 November 2021
Page 2
The Division also wants to make you aware that we are evaluating the performance test
data for all processes, without respect to the requirement to establish a carbon bed replacement
schedule, and may add additional periodic performance testing requirements to your air permit at
renewal.
If you have questions concerning this matter, please contact Evangelyn Lowery-Jacobs,
Environmental Engineer, or me, at(910) 433-3300.
Sincerely,
A,4,Lc
Heather S. Carter
Fayetteville Regional Supervisor
Division of Air Quality,NCDEQ
HSC/elj
cc: FRO Facility Files
Christel Compton,Chemours(e-copy)
North Carolina Department of Environmental Quality I Division of Air Quality
Fayetteville Regional Office 1 225 Green Street,Suite 714 1 Fayetteville,:North Carolina.28301
910.433.3300T 191G.4857467F