2021.09.30_CCOA.p4(c)_Stormwater Treatment System Report Cover Letter

 
The Chemours Company
Fayetteville Works
22828 NC Highway 87 W
Fayetteville, NC 28306

September 30, 2021
Sushma Masemore, P.E.
Deputy Assistant Secretary for Environment & State Energy Director
1601 Mail Service Center
Raleigh, NC 27699-1601
[e-mail]

Re: CO Addendum Paragraph 4(c) – Stormwater Treatment System Capture and
Removal Efficiency Report
Dear Ms. Masemore,
Pursuant to the requirements of paragraph 4(c) of the Addendum to Consent Order
Paragraph 12 (CO Addendum), please find enclosed the Stormwater Treatment System Capture
and Removal Efficiency Report (SWTS Capture and Efficiency Report). This report presents the
demonstration that the Stormwater Treatment System meets CO Addendum paragraph 4(c)
requirements including: (1) consistently capturing stormwater from the Monomers/IXM area in
events up to one (1) inch within a 24-hour period; and (2) removing indicator PFAS parameters
at a minimum removal efficiency of 99%. The report was prepared by Chemours’ consultant,
Geosyntec Consultants of NC, P.C.
If you have any questions, please contact me at [e-mail].

Sincerely,

Dawn M. Hughes
Plant Manager
Chemours – Fayetteville Works

Enclosure
SWTS Capture and Efficiency Report

Ms. Masemore
September 30, 2021
Page 2

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Cc:
William F. Lane, DEQ
Alyssa Wright, DEQ
Holly Ingram, DEQ
Francisco Benzoni, NC DOJ
Michael Abraczinskas, DAQ
Michael Scott, DWM
Danny Smith, DWR
David C. Shelton, Chemours
John F. Savarese, WLRK
Kemp Burdette, CFRW
Geoff Gisler, SELC