DEQp00020518

Water Resources
ENVIRONMENTAL QUALITY .
ROY COOPER
Goretwor
MICHAEL S. REGAN
six -r('1111.1,
S. JAY ZIMMERMAN
Director
August 18, 2017
Mr. Ellis H. McGaughy
Plant Manager
The Chemours Company
22828 NC Highway 87 W
Fayetteville, NC 28306-7332
Subject: Request for Additional Information
NPDES Application NC0003573
Fayetteville Works
Dear Mr. McGaughy:
The Division has reviewed your application for the subject permit. To enable us to complete our review
in accordance with N.C.G.S. 143-215.1 and 15A NCAC 2H.0105, please provide additional or revised
information to address the following comments:
1. Revise the renewal application to update the description of the wastewaters discharged to the
WWTP addressing the removal of all process wastewaters containing HFPO dimer acid and any
other changes since the application was submitted in 2016.
2. Sample and provide test results from Outfalls 001 and 002 for pH, TSS, COD, PFOA, PFOS,
manufacturing operations specific organics, metals, all the chemicals on the handout provided to
DEQ on the July 27, 2017 site visit, and PFECAs compounds. The PFECAs compounds at a
minimum shall include the list provided in the August 16, 2017 letter to R. Steven DeGeorge,
Esq. Sampling shall be performed during dry weather,
3. Provide a flow schematic of Chemours process areas showing sumps, quench baths, and all points
of discharge to the WWTP. The schematic should reflect actual average flows. Estimated peak
flows can be submitted on a separate schematic.
4. Provide a description and characterization of the wastewaters from each point of discharge to the
WWTP. The wastewater characterization shall include an analysis of pH, TSS, COD, PFOA,
PFOS, manufacturing operations specific organics, metals, and PFECAs compounds,
Specifically, testing shall be performed at each discharge point for the parameters listed above
and the chemicals on the list provided to DEQ on the July 27, 2017 site visit, if believed to be
present at that discharge point.
5. If not all the manufacturing processes are running during the time of sampling, identify the
processes that were sampled and submit a schedule to sample so that wastewaters from all
manufacturing processes that run-in campaigns are tested. Submit this data to DEQ as it is
received from the laboratory.
6. Provide a revised mass flow balance schematic that reflects the actual long-term average
discharge from Outfalls 001 and 002. Estimates on peak flows can be provided separately.
7. Provide a revised flow balance for the DuPont wastewater treatment discharges including flows
from water treatment units as well as process wastewater flows.
8. Provide an electronic copy of the site's BMP plan addressing spill response procedures.
State of North Carolina I Environmental Quality I Water Resources
1617 Mail service Center f Raleigh, North Carolina 27699-1617
919 707 9000

Historical sampling data, no greater than 4.5 years old, may be submitted provided it is representative of
the current wastewaters being discharged.
Please provide your response within 60 calendar days. All the responses shall be submitted to:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: NPDES Complex Permitting
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If you have any questions, please contact me at 919-807-6387 or email at Teresa.rodri uez(a,nedenr.gov.
Sincerely,
Teresa Rodriguez
NPDES Complex Unit
Division of Water Resources/NCDENR
cc: Linda Culpepper, Division of Water Resources

Table S5. MS transitions for PFAS Analysis
PFBA 212.8 --+ 168.8 13C4-PFBA
PFPeA 262.9---),218.8 13C2- PFHxA
PFHxA 313.6 --> 268.8 1302- PFHxA
PFHpA 362.9--+ 318.8 13C4- PFOA
- PFOA _ 413.0 --► 368.8 1304- PFOA -
Legacy PFASs -----
PFNA 463.0--+ 418.8 13C4- PFOA
PFDA 513.1--+ 68.8 1302-PFDA
- PFBS 299.1--i� 98.8 1802-PFHxS
PFHxS 399.1--> 98.8 1802-PFHxS
PFOS 498.9 - 98.8 13C4-PFOS
PFMOAA 180.0-85.0 N/A
PFMOPrA 229.1-> 184.9 # N/A
PFMOBA 279.0 234.8 N/A
PFECAs PFPrOPrA 329.0 - > 284.7 13C2- PFHxA
PF02HxA245.1 85.0 N/A
PF030A 311. - ► 84.9 N/A
PF04DA 377.1-+ 85.0 N/A
Perfluoro-n-[1,2,3,4-13C4]butanoic acid 217.0--+172
y (13C4-PFBA)
Ferfluoro-n-[1213Q]hexanoic acid
(1302-PFHxA) 315.1-> 269.8
Perfluoro-n-[1'2`' 3 4-13C2]octanoic acid
a 417.0 ---> 372.0
(13C4-PFOA) f
Internal standards -- - __.__- _ __�- - Not applicable
1 Perfluoro-n-[1,2-13C2]decanoic acid
(13C2-PFDA) 515.1 469.8
-> j
Sodium perfluoro-1-
403.1, 83.8
hexane[1802]sulfonate (1802-PFHxS)
Sodium perfluoro-l-[1,2,3,4-13C4joctane
502.9-79
.9
sulfonate 13C4-PFOS
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