DEQ-CFW_00077924

From: Sink, Marla [/O=EXCHANGELA8S/OU=[XCHANGEADMINISTRATIVE GROUP
(FYD|BOHF2]SPDLT)/CN=REOP|ENTS/CN=1443GCDF33F147ACADG2D89C87DCF81B-yWARLA.5|NK]
Sent: 6/6/20I77:2050PM
To: Kritzer, Jamie [/o=ExchangeLabs/ou=ExzhanXeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=cee93c49d01445a3b541bb3Z7dcdc84O-jbkritzer]
Subject: Chemours—VVi|minXtonStar
Hi Jamie,
Please see below the information sent to Vaughn Hagerty, a reporter with the Wilmington Star re: Fayet eviUe'u
[hemouoPlant and the emerging contaminant GenX.
Thanks,
Marla
Marla Sink
Public Information Officer
Department ofEnvironmental Quality
Division ofWater Resources
512 North Salisbury Street
1S11Mail Service Center
Raleigh, NC 27699-1611
Sent: Tuesday, June O6 20173:14PM
To: 'Vaughn Ha8erty'<vaughn.ha8erty@8maiicom>
Please see below the responses from Julie Grzybre: Chemours. | have underlined information you may deem important
to your story. I hope this helps!
Thanks,
Marla
Some ofthe process questions would bebest directed atOhemuuo.Myunderstanding, though very limited, isthat
Chemours transitioned from using PFC)A's to the GenX process a number of years ago (2015). GenXuses PerUuorinated
Chemicals (PFCs) that are described as being less harmful than the PFOA's that were used before. The PFC's used and
generated bythe GenXprocess are not currently regulated in surface waters and do not currently have wastewater
limitations. Sufficient Deer -reviewed information on the toxicoloev of these chemicals is not available at this time. FYI —
It is my understanding that at the time the samples were collected for Mei Sun's paper, Chemours had not completely
tranddonedtothe GenXprocess.
The GenX process is used for making fluoropolymers — earlier question from Vaughn. Chemours is a complex
manufacturing facility and products produced in one line are used in the production of others in another manufacturing
line. |nthis type offacility, DEQ/NPDES permitting tries to follow the chemicals used and produced in each wastestream

The polymer processing aid wastewaters Vaughn asked about earlier are sent for incineration in Arkansas or sometimes
Ohio.
As part of the NPDES permit renewal - Chemours will have to describe all the wastestreams that are to be discharged
and the contaminants they expect to be contained in the wastewaters. The concentrations of each contaminant will be
evaluated against State and Federal surface water aquatic life and human health standards/criteria in accordance with
15A NCAC 0213. If there is reasonable potential for any of the toxicants to exceed the standards/criteria a limitation for
that pollutant will be put in the NPDES wastewater permit. The draft permit will be sent to public notice for 30 days and
the public is welcome to comment.
117110-
Julie A Grzyb
Supervisor
NPDES Complex Permitting
NC DEQ / Division of Water Resources / Water Quality Permitting
919 807 6390 office
919 707 9000 main office
M
LVIR11 MZU* 151 MEN9511111i DUB LVIET1 KNIUMORM11 We
C a Re- abe s.
From: Vaughn Hagerty [mailto:[e-mail]]
Sent: Tuesday, June 06, 2017 12:22 PM
To: Sink, Maria <[e-mail]>
Subject: Re: FW: Thanks a few followup questions
Are you asking whether I'm seeking something I can attribute to you? I'd prefer that.
Maybe it would help if I were a little more explicit: It's still unclear how GenX is getting in the river from
Chemours. Process ii) that I sent to you *seems* to be the GenX manufacture, though I can't yet confirm it. But,
if it is, then what is clear from the description is that any wastewater should not be getting discharged by
Chemours. That's one of the things I'm trying to pin down.
The other, related, unknown is, is GenX involved in process i) somehow, maybe as a by-product. Wastewater
from that one is clearly discharged.
I'm assuming that since GenX isn't regulated, it isn't something that would be monitored in the discharge, but
maybe I'm wrong.
DEQ-CFW-00077925

From: Vaughn Hagerty [maiho
Sent: Monday, June U5,ZU174:S4PM
To: Sink, Maria <
Subject: Re: FW: Thanks a few followup questions
OK. The story goes online tomorrow and in the paper Wednesday. I'd still he interested inwhat Julie has to
On Mon, Jun 5,2Ol7at4:l9PM, � Sink, Marla wrote:
Sorry for the delay ingetting back with you. Julie bgoing tocheck with the permit writer onyour questions re:
manufacturing so we will have to get back with you tomorrow.
I hope that works!
Thank you,
Maria
TLIMIFINTI"
Department of Environmental Quality
Division of Water Resources

512 North Salisbury Street
1611 Mail Service Center
From: Vaughn Hagerty [mailto:[e-mail]]
Sent: Friday, June 02, 2017 3:01 PM
To: Sink, Maria <[e-mail]>
Subject: Thanks a few followup questions
Hi, Marla. I had a few followup questions for Connie (or others, where appropriate):
1) Connie mentioned that Mike Johnson at Chemours provided her with a copy of the November 2016 study.
I'm curious about the nature of that communication. Was it by email? Did he say anything about the study?
Did anyone at DEQ talk to anyone at CFPUA or EPA about it?
2) These two manufacturing descriptions come from Chemours 2016 NPDES renewal app. I'm wondering if
Connie or someone else there can identify which, if any, is the GenX manufacturing process:
i) "The HFPO monomer and the Vinyl Ether monomers are used to manufacture various fluorochemical
products such as Chemours Teflon. Wastewater generated from this manufacturing facility is discharged to
the Chemours' wastewater treatment plant."
ii) "The Chemours Company — Fayetteville Works'PPA manufacturing area produces a polymer
processing aid. The processing aid produced in this unit is used in the manufacturing of fluoropolymers and
fluorinated telomers, but none of the produced processing aid is used at the Fayetteville Works site. All
process wastewater generated from this manufacturing facility is collected and shipped off -site for disposal.
No process wastewater from this manufacturing facility is discharged to the Chemours' wastewater treatment
plant or to the Cape Fear River."
Thanks again for all the help!
DEQ-CFW-00077927

Vaughn Hagerty
DEQ-CFW 00077928