DEQ-CFW_00021305

From: Johnson, Chris [/O=EXCHANGELABS/OU=[XCHANGEADMINISTRATIVE GROUP
(FYD|BOHF2]SPDLT)/CN=REOP|ENTS/CN=147G89]FAF]749D2BA3E82OE14EDCEE2'OOHNSON10]
Sent: 6/20/I0I71:30:45PW1
To: Culpepper, Linda [/b=ExchanXeLabs/ou=[xchangeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=73d475cbae3Z4aI9687e171Idc9a79c5'|mcu|pepper]
CC: Karo|y, Cyndi[/o=ExchanXeLabs/ou=ExchangeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=57d6O7f9f8af4584aefedb666c924ebf-cbkaro|y]
Subject: RE: ROtreatment and sampling atChemours
| have sent anemail tothe Branch Chief ofEnvironmental Chemistry. She isinLas Vegas and | hope tohear back
sometime later this morning. Finding specific contact info for EPA/ORD here in RTP is proving difficult. | called the main
number and the person who answered wasn't familiar with the laboratory. Toyour knowledge, has anyone been in
contact with them before now?
Chris Johnson
NCDEQFDVXR
Water Sciences Section
Corrpspondence. with this ernaii address is subjpct to thp North Caro�ina Pubk Rpeords Law and may be disck)sed to third parties,
Sent: Tuesday, June 2U,2Ol73:S3AM
To: Johnson, Chris <chrisjohnuon@ncdenr.8ov>
Subject: Re: ROtreatment and sampling at[hemours
Specifics like timing for test results, detection limits, constituents able to be analyzed and number ofsamples they can
accommodate, etc. Those are the types of initial questions.
Chris Johnson
WCDEQ.-DWR
Water Sciences Section
Corresjondence with this erna.i! address is subject to the i-North Caro:ina Public Records Law and may be disdosed to third oarties
From: Culpepper, Linda
Sent: Monday, June l9,JOl711:O5PK4
To: Grzyb,Julie Johnson,
Cc: Holman, Sheila Zimmerman, Jay
Poupart,]eff
Subject: RE: ROtreatment and sampling at[hemoun
Michael Johnson has shared that on Thursday Chemours implement the process change
(closing the vents) as discussed with Jim Gregson after the public meeting as a means to reduce
the discharge ofGenX. Heindicated they think that sofar kseems tohave worked and the water
testing this week will help confirm if concentrations in the wastewater has decreased as [hemours
thinks it would to work towards the remaining 20% reduction.
OEQ-CFVV_00021305

We're are continuing toconsider additional sampling concepts. Wealso need tounderstand what
analysis capacity EPA ORDcan provide. Chris Johnson atthe DVVRlab will becoordinating with EPA
ORDfor us. Definitely need your help in designing further sampling plans.
Chris, give us an update on coordination with EPA ORD as it progresses. Thank you!
Linda Culpepper
Deputy Director
Division of Water Resources
North Carolina Department ofEmimnmenta|Oue|by
1611Mad Service Cemer
Phone: [phone]
Fronm:Grryb Julie
Sent: Monday, June 19,2Ol711:18AM
To: Culpepper, Linda
Cc: Holman, Sheila ; Zimmerman, Jay �
Poupart,]eff
Subject: ROtreatment and sampling at[hemouo
FYI- Four citizens have called and left me a message to not reissue a NPDES permit to Chemours. They
were all appreciative that DWR was looking into the matter and are very concerned.
When discussing the possibility ofKOtreatment can you please consider discussing the following:
From apermitting perspective | have afew requests:
1) Chemours should sample each process line (all five identified in permit application) discharging
to the WWTP and the separate stormwater from the process areas to assess all other sources of
HFPOdimeracid.
Z) IfHFPObbeing discharging from other areas, asDr. Knappebconcerned about [hemours
should consider providing ROtreatment for all the 1.2 MGDwastewaters discharged from the
Wastewater treatment p|ant—thisw/ay everything is covered and any additional pollutants
(ethers)vveare concerned about will be addressed as well.
3) 1 realize Chemours believes most of the HFPO climer acid is coming from the vinyl ethers process
—but sampling would confirm it.
Treating the vinyl either process wastewaters with RO or pumping and hauling itfor incineration
(-160,000 gpd) would at least alleviate immediate concerns but the Division will need to confirm
it's not being discharged from other areas.
Note it's possible that [hemouo cannot treat the vinyl either process wastewaters with RO because it
contains particulate matter but treating the wastewaters from the Activated Sludge plant with R0
should be possible.
Thanks,
Julie
OEQ-CFVV_00021306

Julie A Grzyb
Supervisor
NPIDES Complex Permitting
NC DEQ / Division of Water Resources / Water Quality Permitting
New 919 807 6390 office
919 707 9000 main office
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
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DEQ-CFW-00021307