HomeMy WebLinkAboutNC0089915_Draft Permit_20200101 (2)STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
DRAFT NPDES PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
The Chemours Company FC, LLC
is hereby authorized to discharge treated wastewater and stormwater from a facility located at
Chemours Company- Fayetteville Works
22828 NC Highway 87 W
Fayetteville
Bladen County
to receiving waters designated as the Cape Fear River in the Cape Fear River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV
hereof.
The permit shall become effective Month DD, 20YY.
This permit and the authorization to discharge shall expire at midnight on Month DD, 20YY.
Signed this day Month DD, 20YY.
DRAFT
S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit NCO089915
SUPPLEMENT TO PERMIT COVER SHEET
The exclusive authority to operate and discharge from this facility arises under the permit conditions,
requirements, terms, and provisions included herein.
is hereby authorized to:
1
2
The Chemours Company FC, LLC
Operate a 1.58 MGD wastewater treatment faciliti
• influent oxidation, coagulation, and pH adj
• dual booster pumps;
• dual ultrafiltration units;
• three granular activated carbon (GAC)+asorp
• sludge pump;
• polymer make down/injection system;
• in -line mixer and thickener unit;
• rotary fan press skid; '*4
• return filtrate pump;*&,
of
Discharge treated surface water, stormwater, and groundwater, including groundwater
from the existing Black Creek Aquifer monitoring wells, through Outfall 003 at the
location specified on the attached map into the Cape Fear River, a class C, WS-IV water
Zin the Cape Fear Ris
in;
Page 2of12
Permit NCO089915
Part I
A. (I.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — OUTFALL 003
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Facility Physical -Chemical Grade II
Beginning on the effective date of this permit and lasting through the expiration date, the Permittee is authorized to
discharge from Outfall 003 (treated surface water, groundwater, and stormwater) Such discharges shall be
limited and monitored by the Permittee as specified below:
PARAMETER CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow 50050
1.58 MGD
Continuous
Recording
Effluent
Total Monthly Flow 82220
Monitor and Report (MG/mo)
Monthly
Recording
or
Calculation
Effluent
Temperature (°C) 00010
See Note 2
Weekly
Grab
Effluent,
Upstream,
Downstream
BOD, 5-day, 20°C C0310
30.0 mg/L
45.0 mg/L
Monthly
Composite
Effluent
TSS C0530
30.0 mg/L
45.0 mg/L
Monthly
Composite
Effluent
Dissolved Oxygen, mg/L 00300
Weekly
Grab
Upstream,
Downstream
PMPA4
0.054 pg/L 0.054 pg /L
Monitor and Report (lb/mo)
Twice per month
Monthly
Grab
Calculation
Influent, Effluent
Effluent
PMPA4
PMPA4
Monitor and Report (Ib/yr)
Annually
Calculation
Effluent
HFPO-DA4 52612
0.06 pg/L
0.06 pg /L
Twice per month
Grab
Influent, Effluent
HFPO-DA4
Monitor and Report (Ib/mo)
Monthly
Calculation
Effluent
HFPO-DA4
Monitor and Report (lb/yr)
Annually
Calculation
Effluent
PFMOAA4 52613
0.85 pg/L
0.85 pg/L
Twice per month
Grab
Influent, Effluent
PFMOAA4
Monitor and Report (Ib/mo)
Monthly
Calculation
Effluent
PFMOAA4
Monitor and Report (Ib/yr)
Annually
Calculation
Effluent
PFAS compounds, ng/L
See A. (5.)
Grab
See A. (5.)
Total Phosphorus, mg/L C0665
Monthly
Composite
Effluent
Total Nitrogen, mg/L C0600
(NO2+NO3+TKN)
Monthly
Composite
Effluent
Conductivity 00094
Monthly
Grab
Upstream,
Downstream
Page 3 of 12
Permit NCO089915
PARAMETER CHARACTERISTICS
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Sample
Location,
Chronic Toxicity TGP3B
See Note 5
Quarterly
Composite
Effluent
pH 00400
Between 6.0 and 9.0 Standard Units
Weekly
Grab
Effluent
Mercury (Method 1631E), COMER
ng/L
Quarterly
Grab
Effluent
Total Selenium 01147
Quarterly
Composite
Effluent
Total Silver6 01077
0.48 Hg/1-3
2.01 Hg/L
Monthly
Composite
Effluent
Total Cobalt6 01037
23.9 Hg/L
23.9 Hg/L
Monthly
Composite
Effluent
Total Cadmium, Ng/L 01027
Quarterly
Composite
Effluent
Total Copper, Ng/L 01042
Quarterly
Composite
Effluent
Total Cyanide, Ng/L 00720
Quarterly
Composite
Effluent
Total Lead, Ng/L 01051
Quarterly
Composite
Effluent
Total Thallium, Ng/L 01059
Quarterly
Composite
Effluent
Total Hardness [as CaCO3] 00900
(mg/L)
Quarterly
Composite
Effluent
Notes:
1. Upstream monitoring shall be at the Permittee's Cape Fear River Wa r Intake; downstream shall be at the
boat ramp approximately 4500 feet downstream at Prospect Hall Landing.
As a participant in the Middle Cape Fear River Basin Association, the instream monitoring requirements for
conventional parameters (DO, temperature, and conductivity) as stated above are waived. Should your
membership in the agreement be terminated, you shall notify the Division immediately and the instream
monitoring requirements specified in your permit shall be reinstated.
Influent — influent to the Old Outfall 002 Wastewater Treatment System. Note the Outfall 003 concentration
limitations do not apply to the influent. Influent sampling is required to calculate the HFPO-DA and
PFMOAA percent removal.
Effluent — Outfall 003 (effluent from the Old Outfall 002 Wastewater Treatment System).
2. The temperature of the effluent shall be such as not to cause an increase in the temperature of the receiving
stream of more than 2.8°C and in no case cause the ambient water temperature to exceed 32°C.
3. Sufficiently sensitive test methods shall be used to analyze for Silver. The Division shall consider all effluent
Silver values reported below the PQL to be in compliance with the Monthly Average Silver limit. As of the
effective date of this permit, DWR recommends a target PQL of 1.0 µg/L for Silver.
4. The Permittee shall remove indicator parameters HFPO-DA, PFMOAA, and PMPA at an efficiency of 99% as
required by the Consent Order in order to reduce PFAS loading to the Cape Fear River. The effluent limits
listed above are Technology Based Effluent Limits ("TBELs") calculated to ensure a minimum of 99% removal
efficiency. In addition to complying with these effluent limits the Permittee must demonstrate compliance with
the 99% removal efficiency requirement by calculating monthly removal efficiency for HFPO-DA, PFMOAA,
and PMPA pursuant to condition A. (6.). The Permittee may request revision of the 99% removal efficiency
requirement upon a demonstration that influent concentrations of PFAS have been reduced to such a level that
99% removal is no longer technically feasible. However, notwithstanding any such revision, Chemours shall
continue to operate the Treatment System at optimal efficiency. The DEQ will re-evaluate the limits after 3
Page 4 of 12
Permit NCO089915
years of treatment system operation and will implement adjusted limits if the analysis indicates an improved
performance.
5. Chronic Toxicity (Ceriodaphnia) P/F @ 12.5%; quarterly during February, May, August, November; see
condition A. (2.) of this permit.
6. After 12 months of sampling the facility can apply for a reduction in sampling if all the sampling results
demonstrate concentrations below detection levels. The facility shall be employing the sufficiently sensitive
test methods.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
The facility shall develop a Dam (collection system) Operation and Maintenance Plan (Plan) to ensure
maximum dry weather flow (— 610 gpm) in the channel is consistently captured and treated. Similar efforts
should be applied at the sumps/dams or other devices that will be used to capture water from the seeps.
The Plan should be provided to the DEQ within 30 days of the permit issuance for review and approval.
Upon approval, the Plan becomes an integral part of the permit.
The facility shall complete and submit EPA Form 2C for this Outfall within 180 days of commencement of
the discharge.
From time -to -time the Middle Cape Fear River has experienced flooding conditions which are documented to
cause a significant increase in water levels OUw Lock and Dam #3, consistent with the location of proposed
Outfall 003. During these events a backwater condition propagates upstream in the "Old Outfall 002
Stream". Historical observation indicates that the Old Outfall 002 Stream levels can rise significantly (consistent
with the flooded Cape Fear River levels) and would be expected, at times, to be equal to or significantly greater
than the invert elevation of the treatment system intake dam and associated pumping system. During these
flooded backwater conditions elevated sediment load and reduced flow velocity gradients are expected to cause
significant sediment deposition within the collection dam and pumping structure. The sediment load may cause
failure of the pumping and treatment system during the flooded backwater condition. Requirement for treatment
shall be suspended during these force majeure flooding events and be allowed 48 hours after the backwater stream
level falls below the invert of the intake collection dam to safely maintain the influent collection structure and re-
initiate collection and treatment. The triggering Cape Fear River flood elevations; event documentation and
notification requirements; and procedure f r treatment cessation and safe restart shall be included in the approved
Dam Operation and Maintenance Plan.
A. (2.) CHRONIC T
[15ANCAC 0213.02001
LIMIT P/F (QUARTERLY) — OUTFALL 003
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 12.5%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," (Revised December 2010, or subsequent versions)
or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised December 2010, or
subsequent versions). The tests will be performed during the months of February, May, August, and
November. These months signify the first month of each three-month toxicity testing quarter assigned to the
facility. Effluent sampling for this testing must be obtained during representative effluent discharge and shall be
performed at the NPDES permitted final effluent discharge below all treatment processes.
Page 5 of 12
Permit NCO089915
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -December 2010, or subsequent versions).
All toxicity testing results required as part of this permit condition will be entered electronically using the
Division's eDMR system for the months in which tests were performed, using the parameter code TGP313 for the
pass/fail results and THP313 for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
North Carolina Division of Water Resources
Water Sciences Section/"ncdenrx
logy Branch
1621 Mail Service Cente
Raleigh, NC 27699-1621
Or, results can be sent to the email, ATForms.AT
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after
the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxic plc must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic to city (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the port with the notation of "No
Flow" in the comment are of the form. T report shall be submitted to the Water Sciences Section at the address
cited above.
Should the permittee fail to monitor during a month in whit toxicity monitoring is required, monitoring will be
required during the following month. Assessment of toxicity compliance is based on the toxicity testing quarter,
which is the three-month time interval that begins on the first day of the month in which toxicity testing is
required by this ermit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
A. (3.) RE -OPENER CONDITION
[NCGS 143-215.3 (a) (2) and NCGS 143-215.66]
This permit shall be modified, or revoked and reissued to incorporate additional limitations and monitoring
requirements in the event toxicity testing or other studies indicate that detrimental effects may be expected as a
result of this discharge.
Page 6 of 12
Permit NCO089915
A. (4.) ELECTRONIC REPORTING OF MONITORING REPORTS
[G. S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports.
The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
1.
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
Im
The permittee shall report discharge monitoring data electronically .ng the NC 's Electronic
Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) sha e summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and
submit DMRs electronically using the internet. The eDMR system may be accessed at:
hLtps:Hdeq.nc.gov/about/divisions/water-resources/edmi
0
If a permittee is unable to use the eDMR system due to a m10
ons ted hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access, then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge
monitoring data may be submitted on paper DMR forms (MR 1, 1. 1, 2, 3) or alternative forms approved by
the Director. Duplicate signed copies shall be submitted to the following address:
NC D Division of Wa 8ResourcNater Qua i Permitting Section
ATTENT N: Central Files1617 Mail Service Center
Raleigh, North Carolina 276
See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports; (This does not include the flow of waters over the dam of OOF2
drainage waters from water treatment due to wet weather events causing OOF2 drainage flow rates to be
above dry weather flows.)
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
Page 7 of 12
Permit NC0089915
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver
from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time of each
electronic submission. The permittee should use the EPA's website resources to identify the initial recipient
for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or
the state authorized by EPA to implement the NPDES program) th e designated entity for receiving
electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of
electronic submission and for each state. Instructions on how to access and use the appropriate electronic
reporting tool will be available as well. Information on EPA's NPDES Elec onic Reporting Rule is found at:
system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in tXverofr
"Rep
Requirements" section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reportinhe Division. To obtainan electronic
reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division.
Requests for temporary electronic reporting waivers must be submitted in writing to the Division for written
approval at least sixty (60) days prior to the date the facility would be required under this permit to begin
submitting monitoring data and reports. The duration of a temporary -waiver shall not exceed 5 years and
shall thereupon expire. At such time, monitoring data and reports shall be submitted electronically to the
Division unless the permittee re -applies for and is granted a new temporary electronic reporting waiver by the
Division. Approved electronic reporting waivers are not transferrable. Only permittees with an approved
reporting waiver request may submit monitoring data and reports on paper to the Division for the period that
the approved reporting waiver request is effective.
lk
Information on eDMR and the application for yemporary electronic reporting waiver are found on the
following web page:
4.
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section
B. (I 1.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (I 1.)(b). A
person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account, please visit the following web page:
hLtp:Hdeq.nc.gov/about/divisions/water-resources/edmr
Page 8 of 12
Permit NCO089915
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualifiedpersonnelproperly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of
my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations. "
5. Records Retention [Supplements Section D. (6.)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.41].
A. (5.) PFAS MONITORING REQUREMENNat
ANALYTICA THODS
[NCGS 143-215.3 (a) (2) and NCGS 143-215.661
The permittee shall monitor for PFAS compoumonitoring frequencie ribed below. The
lists of compounds follow. Note that not all required compounds have eDMR parameter codes. Those with
parameter codes should be reported using the applicable codes, and all other results for PFAS compounds
should be reported in the comment section of the eDMR or added as supplemental information. In addition
to other data reporting requirements:
• a complete copy of all PFAS sampling results shall be submitted to NPDES Permitting via email
at svc_deq_onpdes-ec ncdenr.gov, with the Facility permit number and name in the Subject
heading, at the same time eDMR data is due; and
• laboratory results mus e provided to NCDEQ using the state's electronic data deliverables
(EDDs). Provide EDDs using NCDEQ EQuIS formats as described at
https://earthsoft.com/products/edp/ncdeq-edp-format/. The methods described in the permit as
approved versions of "EPA 537 Modified'_ and "Table 3" should be referenced in the EDD as
methods "CHEMOURS_CO" and " HEMOURS_CO_TBLY respectively.
The Permittee sha se the following analytical methods with the following reporting limit for the PFAS
compounds.
Method description: Approved methods and SOPS referred to as "EPA 537 Modified" and "Table 3"
should be used as described in supporting material and approved by DEQ Division of Waste
Management in a letter dated May 8th 2019. For this permit, Eurofins Lancaster and Eurofins Test
America should use these same approved methods and update all method revisions with the referenced
methods for consistency across all work projects for Chemours Company Fayetteville Works.
PQL: Recommend 2ng/L HFPO-DA, 5ng/L PFMOAA, 20 ng/L for PEPA, 8:2 FTS, 4:2 FTS, 6-2
Fluorotelomer sulfonate, N-ethyl perfluorooctane sulfonamidoacetic acid, and N-methyl perfluorooctane
sulfonamidoacetic acid, and 10 ng/L for all other PFAS unless Chemours documents why this cannot be
obtained.
Page 9 of 12
Permit NCO089915
Monitoring Locations and Frequency
Location
Compounds
Frequency
Upstream at the Permittee's Cape
Fear River Water Intake
Table 3+ Lab SOP
Monthly
Full Suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
Quarterly
Influent to the Treatment System
Table 3+ Lab SOP
Monthly
Full suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
Quarterly
Outfall 003 (effluent from the
Treatment System)
Table 3+ Lab SOP
Monthly
Full suite (Table 3+ Lab SOP
and EPA Method 537 Mod
Quarterly
Downstream
The boat ramp approximately
4500 feet downstream at Prospect
Hall Landing.
Table 3+ Lab SOP
Monthly
Full Suite (Table 3+ Lab SOP
and EPA Method 537 Mod)
Quarterly
PFAS Compounds: Full Suite = Table 3+
L%b*+ M od
IV
Im
537 Modified Compounds:
Analytical
Common
Chemical Name
CASN
Chemical
Parameter
Method
Name
NFormula
code
HFPO-DA
Hexafluorop ne xide
13252-13-6
C61V1103
52612
dimer acid V
PEP A
Perifuoroethox yl
26729-61-2
C5HF903
52618
carboxylic acid
MW
PFECA-GNEL
Perfluoro-4-isopropoxybutanoic
801212-59-9
C12H9F903S
52619
acid
PFMOAA
Perfluoro-2-methoxyacetic acid
674-13-5
C31V503
52613
PF02HxA
Perfluoro(3,5-dioxahexanoic)
39492-88-1
C41IF704
52617
acid
F030A
Vacid
Perfluoro(3, 7-trioxaoctanoic)
39492-89-2
C5HF905
52616
PF04DA
Perfluoro(3,
39492-90-5
C61V1106
52615
tetraoxadecanoic) acid
Table 3+
PMPA
Perfluoromethoxypropyl
13140-29-9
C41IF703
52620
Lab SOP
carboxylic acid
Hydro -EVE
Acid
Perfluoroethoxypropanoic acid
773804-62-9
C8H2F1404
52621
EVE Acid
Perfluoroethoxypropionic acid
69087-46-3
C81V1304
52622
PFECA-B
Perfluoror-3,6-dioxahepanoic
151772-58-6
C51IF904
52626
acid
R-EVE
R-EVE
N/A
C8H2F1205
52640
PF05DA
Perfluoro-3,5,7,9,11-
39492-91-6
C71V1307
52627
pentaoxadodecanoic acid
Byproduct 4
Byproduct 4
N/A
C7H2F1206S
52643
Byproduct 5
Byproduct 5
N/A
C7H3F1107S
52644
Byproduct 6
Byproduct 6
N/A
C6H2F1204S
52645
NVHOS
Perfluoroethoxysulfonic acid
1132933-86-
C4H2F804S
52628
86-8
Page 10 of 12
Permit NCO089915
PES
Perfluoroethoxyethanesulfonic
acid
113507-82-7
C41V904S
52629
PFESA-BP1
Byproduct 1
29311-67-9
C71V1305S
52630
PFESA-BP2
Byproduct 2
749836-20-2
C71-12F1405S
52614
DFSA
DFSA
422-67-3
C21-12F205S
Table 3+
MMF
MMF
1514-85-8
C3H2F204
Lab SOP
MTP
MTP
93449-21-9
C41-14F403
PPF Acid
PPF Acid
422-64-0
C31V502
PFBA
Perfluorobutanoic acid
375-22-4
C41V702
51522
PFDA
Perfluorodecanoic acid
335-76-2
C101V1902
51627
PFDoA
Perfluorododecanoic acid
307-55-1
C121V2302
51629
PFHpA
Perfluoroheptanoic acid
375-85-9
C71V1302
51625
PFNA
Perfluorononanoic acid
375-95-1
C91V1702
51626
PFOA
Perfluorooctanoic acid
335-67-1
C81V150
51521
PFHxA
Perfluorohexanoic acid
307-24-4
C61V1102
51624
PFPeA
Perfluoropentanoic acid
2706-90-3
C51V902
51623
PFTeA
Perfluorotetradecanoic acid
376-06-7
C141V2702
51531
PFTriA
Perfluorotridecanoic acid
72629-94-8
C131V2502
51630
PFUnA
Perfluoroundecanoic acid
2058-94-8
C11HF2102
51628
PFBS
Perfluorobutanesulfonic acid
375-73-5
C4HF9SO
52602
PFDS
Perfluorodecanesulfonic acid
335-77-3
C10HF2103S
52603
PFHpS
Perfluoroheaanesulfonic acid
375-92-8
C7HF1503S
52604
PFHxS
Perfluorohexanesulfonic acid
355-46-4
C6HF13S03
52605
PFNS
Perfluorononanesulfonic acid
68259-12-1
C91V1903S
52611
EPA
PFOS
Perfluorooutanesulfonic acid
1763-23-1
C81V17SO3
52606
Method
PFPeS
Perfluoropetanesulfonic acid
2706-91-4
C51V1103S
52610
10:2 FTS
10:2 fluorotelomersulfonic acid
120 26-60-0
C121-15F2103
52631
537 Mod
4:2 FTS
4:2 fluorotelomersulfonic acid
24-72-4
C61-15F903S
52607
6:2 FTS
6:2 fluorotelomersulfonic acid
27619-97-2
C8H5F13S03
52608
8:2 FTS
8:2 fluorotelomersulfonic acid
39108-34-4
C101-15F1703S
52609
NEtFOSAA
NEtFOSAA
2991-50-6
C121-18F17N04S
51643
NEtPFOSA
NEtPFOSA
NEtPFOSAE
4151-50-2
1691-99-2
C10H6F17NO2S
C12H10F17NO3S
52642
51641
NEtPFOSAE'q
NMeFOSAA
NMeFOSAA
2355-31-9
C111-16F17N04S
51644
NMePFOSA
NMePFOSA
31506-32-8
C9H4F17NO2S
52641
NMePFOSAE
NMePFOSAE
24448-09-7
C11H8F17NO3S
51642
PFDOS
Perfluorododecanesulfonic acid
79780-39-5
C121V2503S
52632
PFH-xDAV
Perfluorohexadecanoic acid
67905-19-5
C161V3102
52633
PFODA
Perfluorooctadecanoic acid
16517-11-6
C18HF3502
52634
PFOSA
Perfluorooctanesulfonamide
754-91-6
C8H2F17NO2S
51525
F-53B Major
F-53B Major
73606-19-6
C8HC1F1604S
52638
F-53B Minor
F-53B Minor
83329-89-9
C10HCIF2004S
52639
ADONA
4,8-Dioxa-3H-perfluorononanoic
acid
919005-14-4
C71-12F1204
52636
A. (6.) CALCULATION OF HFPO-DA & PFMOAA REMOVAL/LOADS
a. The Permittee shall calculate monthly removal efficiency for HFPO-DA and PFMOAA as follows:
%Removal = Inf luent-Ef f luent
Influent
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Permit NC0089915
Where:
Influent = monthly average influent concentration
Effluent = monthly average effluent concentration
b. The Permittee shall calculate monthly load for HFPO-DA and PFMOAA as follows:
Monthly C Load = C x TMF x 8.34
Where:
C = monthly average concentration for each compound (mg/L)
TMF = Total Monthly Flow of wastewater discharged during the month (MG/month)
8.34 = conversion factor from (mg/L x MG) to pounds
Annual C Load = Sum of the 12 Monthly Loads for each compound for the calendar year
c. The Permittee shall report monthly HFPO-DA and PFMOAA results [% removal (ng/L), and Loading
(pounds/month)] in the discharge monitoring report for each month and shall report each calendar year's
Annual Load (pounds/year) with the December report for that year. Perce removal shall be listed in the
comment section of the eDMR since it has no parameter code.
In addition, calculations shall be submitted electronically with all PFAS data DES Permitting via
email at svc_de n des-ec ncdenr. o with the Facility permit number an e in the Subject
heading.
This percent removal will be reported monthly with Chemours electronic Discharge Monitoring Report
(eDMR) data. If the influent HFPO-DA or PFMOAA concentrations to the water treatment system are
equal to or less than 200 ng/L and 500 ng/L, respectively, then the water treatment system effluent
concentrations of less than the current reportin limits (2 ng/L and 5 ng/L, respectively) shall be
considered as achieving 99% removal
Page 12 of 12