2019.03.06_CCO.p19_ChemoursRequestROapproval

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

March 6, 2019
Sheila Holman
Assistant Secretary for the Environment
1601 Mail Service Center
Raleigh, NC 27699-1601
[e-mail]

Re: Request for Approval of Reverse Osmosis (RO) Drinking Water Systems
Pursuant to Consent Order Paragraphs 19 and 20
Dear Ms. Holman,

Pursuant to Paragraphs 19 and 20 of the Consent Order, this letter serves as our formal
request for DEQ’s approval of the Reverse Osmosis (RO) drinking water systems that we plan to
install. Specifically, for qualifying parties under Paragraphs 19 and 20, we plan to install one of
the following RO systems:

1. Kinetico K5 Drinking Water Station
2. Kinetico A200 Drinking Water System
3. AO Smith AO-US-RO-MB-4000

The primary RO system we have selected for installation is the Kinetico K5 Drinking
Water Station. The Kinetico A200 or AO Smith AO-US-RO-MB-4000 systems may be utilized
in the alternative to accommodate specific installation settings.

Enclosed here, please find datasheets and documentation for the RO systems listed above.
Included in these enclosed materials are slides from a summary of RO performance evaluation
completed by Dr. Detlef Knappe of North Carolina State University and presented by Clean Cape
Fear on July 31, 2017. These slides show that utilization of the Kinetico K5 system resulted in
reductions of all tested compounds to less than 10 parts per trillion.

We would appreciate receiving your approval of our proposed RO systems as soon as
possible, so that we may proceed with installation under the Consent Order.

If you have any questions or need further information, please let me know.

2
Sincerely,
Brian D. Long
Plant Manager
Chemours – Fayetteville Works

Enclosure

Cc:
William F. Lane, DEQ
Francisco Benzoni, NC DOJ
Michael Abraczinskas, DAQ
Michael Scott, DWM
Linda Culpepper, DWR
David C. Shelton, Chemours
John F. Savarese, WLRK
Kemp Burdette, CFRW
Geoff Gisler, SELC