NC0023973_Issuance of Permit_20180207

P
Water Resources
Environmental Quality
February 7, 2018
Jim Fletchner, PE
Executive Director
Cape Fear Public Utility Authority
235 Government Center Drive
Wilmington, NC 28403
ROY COOPER
Governor
MICHAEL S. REGAN
Secretmy
LINDA CULPEPPER
Interum Director
Subject: Final NPDES Permit Renewal
Perms NCO023973
M'Kean Maffitt (Southside) WWTP
New Hanover County
Class 4, SIC Code 4952
Dear Mr. Flechtner:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between
North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently
amended).
Please note that the receiving stream is listed as impaired for Copper and Dissolved Oxygen on the North
Carolina 2014 303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division,
and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits
and stream impairment can be attributed to your facility, then mitigative measures may be required.
The following changes were made to the draft permit sent to you on December 19, 2017:
• Section A. (9.) Copper Compliance Schedule, Step 3 was revised to read- "Within three (3) years
from the effective date of the permit, the Permittee shall submit a report to the Division
summarizing actions taken during the previous year to achieve compliance with the final copper
limitations The actions shall be to accordance with the Corrective Action Plan submitted and
approved by DWR " This change was based on a comment from DWR Wilmington Regional
Office.
• While no other changes were made, it should be noted that comments were received from CFPUA
requesting changes in TRC language, insertion of a special condition from a related permit, and
inquiring about possible effects of reclassification of the Cape Fear River as a SC-Sw (swamp
water). The comments and DWR responses are attached.
The final permit maintains the following significant changes identified in the letter sent on December
19, 2017:
Notning Lompares l-.,
State of North Carolina I Environmental Quality
1611 Mail Service Center I Raleigh, North Carolina 27699-1611
919-707-9000

The receiving stream, the Cape Fear River, is designated a Primary Nursery Area (PNA) in 15A
NCAC 03R .0103(19)(a), which meets High Quality Water (HQW) status with specific water
quality standards for new and expanded discharges per 15A NCAC 02B .0224. Your facility's
current permitted flow of 12 MGD predates the effective date of the PNA designation, so limits are
not affected. However, the HQW-related limits do apply to the expansion phases at 16, 20 and 24
MGD Limits include BODS = 5 mg/L, TSS = 10 mg/L, NH3-N = 2 mg/L and DO = 6 mg/L; and a
safety factor of % normal standard is included for individual toxics. Coincidentally, equivalent
BOD and DO limits are already in Lhe current permit for the expanded phases, as are lower NH3-N
limits. Therefore, TSS limits of 10 mg/L monthly average and 15 mg/L weekly average have been
added to the permit at 16, 20 and 24 MGD expansion phases.
The NC 2007-2014 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Committee (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016 with some exceptions. The NC Division of Water
Resources NPDES Permitting Unit is required to implement the new dissolved metal standards in
all permits public noticed after April 6, 2016. The new standards for most metals include acute
standards. The saltwater standards for several metals are expressed as the dissolved form of the
metals.
Based on the EPA -approved WQSs, a monthly average limit of 3 7 µg/L and a daily maximum
limit of 5.8 µg/L for Total Copper have been added to the permit's 12 MGD effluent page with a
requirement that samples be taken monthly. Results of a reasonable potential analysis on submitted
data at 12 MGD flow indicated a reasonable potential to exceed the instream WQS. To allow time
and actions toward meeting the new Total Copper limits, a 4 -year compliance schedule has been
added to the permit with annual milestones. [See Section A. (9 ).]
Based on the PNA designation of the receiving stream, a monthly average limit of 1 8 µg/L and a
daily maximum limit of 2.9 µg2 for Total Copper have been added to the permit at 16, 20 and 24
MGD phases, and samples shall be taken monthly. Results of a reasonable potential analysis on
submitted data at all expanded flow scenarios indicated a reasonable potential to exceed the
instream WQS. To allow time and actions toward meeting the new Total Copper limits should
expansion occur before permit expiration, the 4 -year compliance schedule mentioned above is
likewise applied. [See Section A. (9.).]
Effluent mercury data was reviewed from June 2014 through September 2017. The Permittee tested
effluent for Total Mercury using EPA test Method 1631 E throughout this period. In accordance
with the 2012 Mercury TMDL NPDES Guidance, the Permittee needs to show annual mean
effluent concentrations below the Water Quality Based Effluent Limitation (WQBEL) of 25.0 ng/L
and no exceedance of the Technology Based Effluent Limitation (TBEL) of 47 ng/L A review of
the data at all flow scenarios showed that the annual averages were below the WQBEL and all data
were below the TBEL; therefore, no mercury limitation is required.
Twenty-two (22) out of 23 low-level effluent mercury samples collected were over 1 ng/L As a
result, a Mercury Minimization Plan (MMP) requirement has been added to this permit renewal.
See Section A. (8.). Please note that the Permittee shall develop and implement a MMP during this
permit term. The MMP shall be developed within 180 days of the NPDES Permit Effective Date,
and shall be available for inspection on-site A sample MMP was developed through a stakeholder
review process and has been placed on the Division website for guidance
(http.//portal.ncdenr.org/web/wq/swl/ps/npdes, under Model Mercury Mnumization Plan).
Page 2 of 4

Results of a Reasonable Potential Analysis of effluent sampling data for Total Nickel showed no
reasonable potential to violate NC water quality standards instream, but the maximum predicted
value was more than half of the allowable concentration at 12 MGD. A reasonable potential was
detected at the higher tiered flows, but this was based on several non -detects that were above the
allowable discharge concentration of 4.2 µg/L plus two detects that were below this value No limits
or monitoring for Total Nickel have been added to the permit; however, quarterly monitoring for
Total Nickel shall be maintained as part of the Permittee's Pretreatment Long Term Monitoring
Program (LTMP), and shall be reported via DMRs.
Review of submitted effluent data found 14 non -detects of Total Nickel at < 10 µg/L and two
detections: at 1.6 and 1.8 µg/L In accordance with 15A NCAC 2B .0500, all test procedures must
produce detection and reporting levels that are below the permit discharge requirements and all
data generated must be reported to the approved detection level or lower reporting level of the
procedure. Currently, DWR's laboratory identifies the Practical Quantitation Limit (PQL) for Total
Nickel at < 2.0 µg/L. The allowable discharge concentration for your facility is 8.3 µg/L Total
Nickel at 12 MGD, and 4.2 µg/L Total Nickel at 16, 20 and 24 MGD flow rates. Therefore, effluent
sampling for Total Nickel as monitored via the Permittee's LTMP and effluent scans, shall be
analyzed down to the lower reporting level of the procedure, (— < 2.0 µg/L), for all permitted flow
rates. Additional monitoring and limits may be added in the next permit renewal if compliance is
not demonstrated.
• Results of a Reasonable Potential Analysis of effluent sampling data for Total Phenolic Compounds
showed no reasonable potential to violate NC water quality standards instream, but the maximum
predicted value was more than half of the allowable concentration at 16, 20 and 24 flow rates.
Quarterly monitoring for Total Phenolic Compounds has been added to the permit at the three
expansion flows.
Review of submitted effluent data found 14 non -detects of Total Silver at < 2 µg/L. In accordance
with 15A NCAC 2B .0500, all test procedures must produce detection and reporting levels that are
below the permit discharge requirements and all data generated must be reported to the approved
detection level or lower reporting level of the procedure. Currently, DWR's laboratory identifies
the PQL for Total Silver at < 1.0 µg/L. The allowable discharge concentration for your facility is
0.10 µg/L Total Silver at 12 MGD, and 0.05 µg/L Total Silver at 16, 20 and 24 MGD. The Division
recommends that the Permittee improves and implements "clean" sampling techniques, and
analyzes Total Silver to the lower reporting level of the procedure. Quarterly monitoring for Total
Silver has been added to the permit
• Results of a Reasonable Potential Analysis of effluent sampling data for Total Zinc showed no
reasonable potential to violate NC water quality standards instream, but the maximum predicted
value was more than half of the allowable concentration at 16, 20 and 24 MGD flow rates. Quarterly
monitoring for Total Zinc shall be maintained as part of the Permittee's Pretreatment Long Term
Monitoring Program (LTMP), and shall be reported via DMRs.
Effluent Pollutant Scans shall be sampled in three years within the permit term per 40 CFR 122.
The years Effluent Pollutant Scans shall be sampled are 2019, 2020 and 2021. [See Special
Condition A. (6.).]
• The Modeling Requirement [Special Condition A. (7.)] has been revised to include submission of
a Dilution Study Plan to the Division for review and approval. The condition has also been revised
to recognize that a dilution study may be performed at 12 MGD or at a minimum prior to expansion.
Page 3 of 4

As a result, revision to the dilution study will be necessary to reflect any changes to the outfall
structure. Please review it carefully.
Federal regulations require electromic 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. The requirement to continue reporting discharge monitoring data
electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet
application has been added to your final NPDES permit [See Special Condition A. (12.) —
Electronic Reporting of Monitoring Reports.].
For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit
the following web page: http //deq.nc gov/about/divisions/water-resources/edmr.
For more information on EPA's final NPDES Electronic Reporting Rule, please visit the following
web site: https://www.federalrej4--ster Dov/documents/2015/10/22/2015-24954/national-pollutant-
discharge-elimination-system-npdes-electronic-reportmg-rule.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable
to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following
receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of
the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be
final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements
to obtain other permits which may be required by the Division of Water Resources or any other Federal,
State, or Local governmental permits that may be required
If you have any questions concerning this permit, please contact Gary Perlmutter at [phone] or via
e-mail at [e-mail].
Sincerely,
t4Dv l'
Culpep , terim Director
Al- Za
on of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
DWR / Wilmington Regional Office / Water Quality
E -copy: US EPA Region 4
DWR / Ecosystems Branch / Mark Vander Bourgh
DWR / Aquatic Toxicology Branch / Susan Meadows
DWR / PERCS / Deborah Gore
Page 4 of 4

Mean Maffit (Southside) WWTP Public Comments by Beth Eckert, CFPUA NCO023973
• Comment: "Regarding the reporting of Total Residual Chlorine non -detect values - It is our
understanding that NCWQA discussed this language with Linda Culpepper on December 201h and
we are requesting that the language on Page 4, footnote 4 be changed to state: All TRC values
below 50 ug/L shall be reported as "<50" and such values shall be compliant with any permit
limitation less than 50 ug/L."
Response: NC agreed to look at what is being done in other states with TRC reporting, but did
not agree to any changes at this time. As stated to the NCWQA attorney, DWR is, investigating
this and other options at this time. That said, our policy remains in effect, which requires the
Permittee to report the lowest certified TRC value while openly acknowledging that certified
values < 50 ug/L will be considered in compliance. The wording in the footnote will be
maintained.
• Comment: "Implementation of the more stringent PNA TSS limits - Although the Northside
WWTP, NC 0023965) discharges into a PNA area as well, CFPUA and NCDEQ negotiated a Special
condition A6 of this permit which established 30/45 TSS limits conditioned upon a filter by-pass
prohibition. We would like to request that this condition be applied to the future expansion
versions of the permit and the 30/45 TSS limits be allowed to remain based on this condition."
Response: The Special Condition A.(6.) in the Northside WWTP permit was put into place in the
2012 renewal because the Permittee had already designed for expansion to 16 MGD, and
received an Authorization to Construct (AtC) for it. Therefore, it was considered impractical to
impose the stricter TSS limits at that time, and the condition was put in the permit to prohibit
bypass of its existing four tertiary filters (installed during a previous upgrade) in lieu of imposing
the more stringent limits. However, should Northside plan for further expansion, the more
stringent limits would apply, and the special condition would be modified accordingly.
For the Southside WWTP, DWR has not issued an AtC for expansion detailing equipment
changes. While tertiary filters are not currently installed, they are depicted in an expansion site
plan drawing that was included in the current permit renewal application. However, it is not
clear how many filters are to be installed (i.e., is there redundancy should one filter be taken
offline?).
NPDES Standard Conditions Part II, Section C. (2.) states, in part: "The Permittee shall at all times
properly operate and maintain all facilities and systems of treatment and control (and related
appurtenances) which are installed or used by the Permittee to achieve compliance with the
conditions of this permit... This provision requires the Permittee to install and operate backup or
auxiliaryfacilities only when necessary to achieve compliance with the conditions of the permit." In
other words, if the Permittee designs an upgrade, it must do so in order to meet more stringent
limits, if applicable. Because the discharge is in a PNA and PNAs are High Quality Waters, HQW-
related limits, including 10/15 mg/L TSS, do apply. Special Condition A.(6.) in the Northside
permit is not applicable to the Southside WWTP. Therefore, the current TSS limits of 30/45
mg/L will be maintained in the permit at the current permitted 12 MGD flow, and the more
stringent TSS limits of 10/15 mg/L will apply at the 16, 20 and 24 MGD expansion phases.
• Comment: "As you stated the Lower Cape Fear River stream is listed as impaired for both
Copper and D0. We agree that addressing impaired water should be a high priority for the
division and is for CFPUA as well with regard to any potential impacts we may have on the
Page 1 of 2

M'Kean Maffit (Southside) WWTP Public Comments by Beth Eckert, CFPUA NCO023973
receiving stream. Can you explain the applicability/impact of the new class C swamp -influenced
reclassification of the Lower Cape Fear River Estuary may have on these designations or other
potential limitations as we move forward?"
Response: The receiving stream segment 18-(71) has been reclassified as a SC-Sw (swamp
water) in 15A 02B .0227 as of June 2017. However, it is not yet submitted to the EPA for
approval. If approved, the revised rule will be implemented for permitting purposes. The
reclassification includes a Water Quality Management Plan for dischargers, which contains three
parts:
(A) Effluent limitations shall be as follows. BOD = 5 mg/L, NH3 =1 mg/L, and DO = 6 mg/L, or
utilize site-specific best available technology on a case-by-case basis for industrial
dischargers...
These limits are already in the permit for Southside's expansion phases and thus there are
no practical implications in terms of limits from the reclassification.
(B) Seasonal effluent limits for oxygen consuming wastes shall be considered...
Seasonal limits for BOD and NH3 are already in the permit for Southside's expansion phases.
(C) Any new or expanded permit pollutant discharge of consuming waste shall not cause the
dissolved oxygen of the receiving water to drop more than 0.1 mg/L below the modeled
in -stream dissolved oxygen at total permitted capacity for all discharges.
A water quality loading evaluation was conducted in 2015, which resulted in a 66%
reduction in ultimate oxygen loading demand at full expansion, primarily as a result of
lowered ammonia limits in the expansion phases. The evaluation concluded that the
proposed expansion will provide a net benefit to instream DO conditions.
Overall, there would be no effect to Southside's permit if the stream reclassification is approved
by the EPA and becomes implemented.
Stream impairment listing is independent of stream classification, so the current impairment
listing would not be affected by the recent reclassification. It is not yet clear if the DO and
Copper impairments will change in future 303(d) listings. Our policy is to follow the most recent
published and EPA -approved 303(d) listing for impairment designations, which currently is the
Final 2014 303(d) listing.
Page 2 of 2

Permit NCO023973
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision 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
Cape Fear Public Utility Authority
is hereby authorized to discharge wastewater from a facility located at the
M'Kean Maffitt (Southside) WWTP
3436 River Road
Wilmington, NC 28412
New Hanover County
to receiving waters designated as 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.
This permit shall become effective March 1, 2018.
This permit and authorization to discharge shall expire at midnight on November 30, 2022.
Signed this day February 7, 2018.
LtL
,ftiL Culpepper, t ector
ision of Water Resources
By Authority of the Environmental Management Commission

Permit NC0023973
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge, are hereby revoked. As
of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The Cape Fear Public Authority is hereby authorized to:
1. Continue to operate an existing 12.0 MGD wastewater treatment system consisting of the following:
• Influent metering
• Standby manual bar screen
• Dual mechanical bar screens, each with grit removal and storage unit
• Splitter box
• Dual primary clarifiers
• Dual trickling filters (180 feet diameter)
• Short-term aeration basm
• Splitter box
• Three screw lift pumps
• Dual secondary clarifiers
• Return activated sludge pumping station
• Chlorine gas disinfection facilities
• Liquid dechlorination facilities
• Flash mixer for chlorine gas
• Dual chlorine contact chambers
• Outfall structure with flow metes
• Main plant backup generator
• Lift -station generator, automatically activated (with backup generator)
• Primary and waste -activated sludge pump stations
• Two gravity -belt thickeners, two belt filter presses; four anaerobic digesters; alkaline stabilization,
covered storage area
• Solids land application
The facility is located at the M'Kean Maffitt (Southside) WWTP, 3436 River Road, Wilmington in New
Hanover County.
2. After receiving an Authorization to Construct from the Division, construct and operate facilities giving the
system a treatment capacity of 16.0 MGD; and
3. After receiving an Authorization to Construct from the Division, construct and operate facilities giving the
system a treatment capacity of 20 0 MGD; and
4. After receiving an Authorization to Construct from the Division, construct and operate facilities giving the
system an ultimate treatment capacity of 24.0 MGD; and
5. Discharge from said treatment facility through Outfall 001 at the location specified on the attached map into
the Cape Fear River, classified as a Class SC-PNA stream in the Cape Fear River Basin.
Page 2 of 20

Permit NCO023973
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (12.0 MGD)
[15A NCAC 02B 0400 et seq., 02B .0500 et seq.]
a. During the period beginning on the effective date and lastmg until expansion above 12.0 MGD (and receipt
of the Engineer's Certification of completion) or permit expiration, the Permittee is authorized to discharge
treated wastewater from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as
specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location 2
Flow
12 0 MGD
Continuous
Recording
Influent or Effluent
CBOD, 5 -day, 20°C 3
25 0 mg/L
40 0 mg/L
2/Week
Composite
Influent and Effluent
Total Suspended Solids (TSS) 3
30 0 mg/L
45 0 mg/L
2/Week
Composite
Influent and Effluent
Ammonia—N (NI -13-N) (mg/L)
Monitor and Report
3/Week
Composite
Effluent
Enterococci (geometric mean)
35/100 mL
276/100 mL
2/Week
Grab
Effluent
Total Residual Chlorine (TRC) 4
13.0 µg/L
Daily
Grab
Effluent
Temperature (°C)
Monitor and Report
Daily
Grab
Effluent
pH
Between 6 8 and 8 5 Standard Units
3/Week
Grab
Effluent
Dissolved Oxygen (DO) (mg/L)
Monitor and Report
Daily
Grab
Effluent
Total Nitrogen (mg/L) 5
Monitor and Report
Monthly
Composite
Effluent
Total Phosphorus (mg/L)
Monitor and Report
Monthly
Composite
Effluent
Total Copper 6
3 7 Ng/L
1
1 5 8 Ng/L
Monthly
Composite
Effluent
Total Silver (µg/L) 7
Monitor and Report
Quarterly
Composite
Effluent
Chronic Toxicity 8
Cenodaphnia dub►a Pass/Fad at 3% effluent
Quarterly
Composite
Effluent
Effluent Pollutant Scan
Monitor and Report
Footnote 9
Footnote 9
Effluent
Dissolved Oxygen (DO) (mg/L)10
Variable 11
Grab
Upstream,
Downstream
Temperature (°C)10
Variable 11
Grab
Upstream,
Downstream
All footnotes are listed on the following page.
Page 3 of 20

Permit NC0023973
Footnotes*
1. Submit discharge monitonng reports electronically using NC DWR's eDMR application system; see Section
A. (12.).
2. Upstream is at a point equidistant between the radio tower north of the WWTP and the northern end of the
dredge spoil island immediately east of the outfall. Downstream is at a point equidistant between the mouth
of Barnards Creek and the southern end of the dredge spoil island immediately east of the outfall.
3. The monthly average effluent CBOD5 and TSS concentrations shall not exceed 15% of the respective influent
value (85% removal).
4. The Division shall consider all effluent TRC values reported below 50 gg/L to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory (including field certified), even if these values fall below 50 gg/L.
5. Total Nitrogen = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen, NO3-N is Nitrate Nitrogen,
and NO2-N is Nitrite Nitrogen
6. The facility shall follow the compliance schedule detailed in Section A. (9.). The Permittee shall achieve
compliance with these limitations by March 1, 2022.
7. Total Silver shall be monitored using "clean" sampling techniques and reported to the lower reporting level
of the procedure.
8. Whole Effluent Toxicity shall be monitored using the Pass/Fall Chronic Toxicity test with Ceriodaphnia dubia
at 3% effluent Samples shall be taken in March, June, September & December; see Section A. (5 ).
9. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see Section A. (6.).
10. The Permittee has deferred receiving -stream sampling to the Lower Cape Fear River Program by
memorandum of agreement (MOA). Should this MOA ternunate for any reason, the Permittee shall
immediately inform the Division in wntmg and immediately resume instream monitoring in accordance with
this permit
11. Stream samples shall be collected 3/week from June 1 through September 30, and collected weekly from
October 1 through May 31.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 20

Permit NCO023973
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (16.0 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
a. Beginning upon receipt of the Engineer's Certification of completion of the 16.0 MGD expansion and lasting
until expansion above 16.0 MGD (and receipt of the Engineer's Certification of completion) or permit
expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges
shall be limited and monitored' by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location 2
Flow
16.0 MGD
Continuous
Recording
Influent or Effluent
BOD, 5 -day, 20°C (Summer
April 1 through October 31) 3
5.0 m /L
g
7 5 m /L
g
Dail y
Composite
p
Influent and Effluent
BOD, 5 -day, 20°C (Winter 3
November 1 through March 31)
10 0 mg/L
15 0 mg/L
Daily
Composite
Influent and Effluent
Total Suspended Solids (TSS) 3
10 0 mg/L
15.0 mg/L
Daily
Composite
Influent and Effluent
NH3—N (Summer April 1 through
October 31)
10 mg/L
3 0 mg/L
3Meek
Composite
Effluent
NH3—N (Winter. November 1
through March 31)
2 0 mg/L
6 0 mg/L
3/Week
Composite
Effluent
Enterococci (geometric mean)
35/100 mL
276/100 mL
Daily
Grab
Effluent
Total Residual Chlorine (TRC) 4
13.0 pg/L
Daily
Grab
Effluent
Temperature (°C)
Monitor and Report
Daily
Grab
Effluent
pH
Between 6.8 and 8.5 Standard Units
Daily
Grab
Effluent
Dissolved Oxygen (DO)
Daily average >_ 6.0 mg/L
Daily
Grab
Effluent
Total Nitrogen (mg/L) 5
Monitor and Report
Monthly
Composite
Effluent
Total Phosphorus (mg/L)
Monitor and Report
Monthly
Composite
Effluent
Total Phenolic Compounds
(N9/L)
Monitor and Report
Quarterly
Composite
Effluent
Total Copper (Ng/L) 6
18 Ng/L
2 9 pg/L
Monthly
Composite
Effluent
Total Silver (µg/L) 7
Monitor and Report
Quarterly
Composite
Effluent
Chronic Toxicity 8
Ceriodaphnia dubia Pass/Fail at 4% effluent
Quarterly
Composite
Effluent
Effluent Pollutant Scan
Monitor and Report
Footnote 9
Footnote 9
Effluent
Dissolved Oxygen (DO) (mg/L) 10
Variable 11
Grab
Upstream,
Downstream
Temperature (°C) 10
Variable 11
Grab
Upstream,
Downstream
All footnotes are listed on the following page.
Page 5 of 20

Permit NC0023973
Footnotes:
1. Submit discharge monitoring reports electronically using NC DWR's eDMR application system; see Section
A. (12.)
2. Upstream is at a point equidistant between the radio tower north of the WWTP and the northern end of the
dredge spoil island immediately east of the outfall. Downstream is at a point equidistant between the mouth
of Barnards Creek and the southern end of ¢he dredge spoil island immediately east of the outfall.
3. The monthly average effluent BODS and TSS concentrations shall not exceed 15% of the respective influent
value (85% removal).
4. Limit and momtor only if the facility adds chlorine or chlorine derivatives to wastewater that is eventually
discharged. The Division shall consider all effluent TRC values reported below 50 gg/L to be in compliance
with the permit. The Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory (including field certified), even if these values fall below 50 gg/L.
5. Total Nitrogen = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen, NO3-N is Nitrate Nitrogen,
and NO2-N is Nitrite Nitrogen.
6. The facility shall follow the compliance schedule detailed in Section A. (9 ). The Permittee shall achieve
compliance with these limitations by March 1, 2022.
7. Total Silver shall be monitored using "clean" sampling techniques and reported to the lower reporting level
of the procedure.
8. Whole Effluent Toxicity shall be monitored using the Pass/Fail Chronic Toxicity test with Ceriodaphnia dubaa
at 4% effluent. Samples shall be taken in .March, June, September and December; see Section A. (5.).
9. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see Section A. (6.).
10 The Permittee has deferred receiving -stream sampling to the Lower Cape Fear River Program by
memorandum of agreement (MOA) Should this MOA terminate for any reason, the Permittee shall
immediately mform the Division in writing and immediately resume mstream monitoring in accordance with
this permit.
11. Stream samples shall be collected 3/week from June 1 through September 30, and collected weekly from
October 1 through May 31
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 6 of 20

Permit NCO023973
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (20.0 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
a. Beginning upon receipt of the Engineer's Certification of completion of the 20.0 MGD expansion and lasting
until expansion above 20.0 MGD (and receipt of the Engineer's Certification of completion) or permit
expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges
shall be limited and monitored' by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location 2
Flow
20 0 MGD
Continuous
Recording
Influent or Effluent
BOD, 5 -day, 20°C (Summer.
April 1 through October 31) 3
5 0 m /L
g
7.5 m /L
g
Dad y
Composite
p
Influent and Effluent
BOD, 5 -day, 20°C (Winter.
November 1 through March 31) 3
10.0 mg/L
15 0 mg/L
Daily
Composite
Influent and Effluent
Total Suspended Solids (TSS) 3
10 0 mg/L
15 0 mg/L
Daily
Composite
Influent and Effluent
NH3—N (Summer April 1 through
October 31)
10 mg/L
3 0 mg/L
3/Week
Composite
Effluent
NH3—N (Winter. November 1
through March 31)
2.0 mg/L
6 0 mg/L
3/Week
Composite
Effluent
Enterococci (geometric mean)
35/100 mL
276/100 mL
Daily
Grab
Effluent
Total Residual Chlorine (TRC) 4
13.0 µg/L
Daily
Grab
Effluent
Temperature (°C)
Monitor and Report
Daily
Grab
Effluent
pH
Between 6.8 and 8.5 Standard Units
Daily
Grab
Effluent
Dissolved Oxygen (DO)
Daily average >— 6 0 mg/L
Daily
Grab
Effluent
Total Nitrogen (mg/L) 5
Monitor and Report
Monthly
Composite
Effluent
Total Phosphorus (mg/L)
Monitor and Report
Monthly
Composite
Effluent
Total Phenolic Compounds
(u9/L)
Monitor and Report
Quarterly
Composite
Effluent
Total Copper (Ng/L) 6
18 Ng/L
2.9 Ng/L
Monthly
Composite
Effluent
Total Silver (µg/L) 7
Monitor and Report
Quarterly
Composite
Effluent
Chronic Toxicity 8
Cernodaphnia dubia Pass/Fail at 5% effluent
Quarterly
Composite
Effluent
Effluent Pollutant Scan
Monitor and Report
Footnote 9
Footnote 9
Effluent
Dissolved Oxygen (DO) (mg/L) 10
Variable 11
Grab
Upstream,
Downstream
Temperature (°C) 10
Variable 11
Grab
Upstream,
Downstream
All footnotes are listed on the following page.
Page 7 of 20

Permit NC0023973
Footnotes:
1. Submit discharge monitoring reports electronically using NC DWR's eDMR application system; see Section
A (12.).
2. Upstream is at a point equidistant between the radio tower north of the WWTP and the northern end of the
dredge spoil island immediately east of the outfall. Downstream is at a point equidistant between the mouth
of Barnards Creek and the southern end of the dredge spoil island immediately east of the outfall.
3. The monthly average effluent BODS and TSS concentrations shall not exceed 15% of the respective influent
value (85% removal)
4. Limit and monitor only if the facility adds chlorine or chlorine derivatives to wastewater that is eventually
discharged. The Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory (including field certified), even if these values fall below 50 µg/L.
5. Total Nitrogen = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen, NO3-N is Nitrate Nitrogen,
and NO2-N is Nitrite Nitrogen.
6. The facility shall follow the compliance schedule detailed in Section A. (9.). The Permittee shall achieve
compliance with these limitations by March 1, 2022.
7. Total Silver shall be monitored using "clean" sampling techniques and reported to the lower reporting level
of the procedure.
8. Whole Effluent Toxicity will be monitored using the Pass/Fall Chronic Toxicity test with Ceriodaphnia dubaa
at 5% effluent. Samples shall be taken in March, June, September and December; see Section A. (5.).
9. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see Section A. (6.).
10. The Permittee has deferred receiving -stream sampling to the Lower Cape Fear River Program by
memorandum of agreement (MOA). Should this MOA terminate for any reason, the Permittee shall
immediately inform the Division in writing and immediately resume instream monitoring in accordance with
this permit.
11 Stream samples shall be collected 3/week from June 1 through September 30, and collected weekly from
October 1 through May 31.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 8 of 20

Permit NCO023973
A. (4.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (24.0 MGD)
[15A NCAC 02B .0400 et seq , 02B .0500 et seq.]
a. Begmning upon receipt of the Engineer's Certification of completion of the 24.0 MGD expansion and lasting
until permit expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such
discharges shall be limited and monitored' by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location 2
Flow
24 0 MGD
Continuous
Recording
Influent or Effluent
BOD, 5 -day, 20°C (Summer.
April 1 through October 31) 3
5 0 m /L
g
7 5 m /L
g
Dad y
Composite
p
Influent and Effluent
BOD, 5 -day, 20°C (Winter. 3
November 1 through March 31)
10 0 mg/L
15 0 mg/L
Daily
Composite
Influent and Effluent
Total Suspended Solids (TSS) 3
10 0 mg/L
15 0 mg/L
Daily
Composite
Influent and Effluent
NH3—N (Summer April 1 through
October 31)
10 mg/L
3 0 mg/L
3/Week
Composite
Effluent
NH3—N (Winter November 1
through March 31)
2.0 mg/L
6 0 mg/L
3/Week
Composite
Effluent
Enterococci (geometric mean)
35/100 mL
276/100 mL
Daily
Grab
Effluent
Total Residual Chlorine (TRC) 4
13 0 µg/l-
Daily
Grab
Effluent
Temperature (°C)
Monitor and Report
Daily
Grab
Effluent
pH
Between 6 8 and 8 5 Standard Units
Daily
Grab
Effluent
Dissolved Oxygen (DO)
Daily average >— 6 0 mg/L
Daily
Grab
Effluent
Total Nitrogen (mg/L) 5
Monitor and Report
Monthly
Composite
Effluent
Total Phosphorus (mg/L)
Monitor and Report
Monthly
Composite
Effluent
Total Phenolic Compounds
(N9/L)
Monitor and Report
Quarterly
Composite
Effluent
Total Copper (Ng/L) 6
18 Ng/L
2 9 Ng/L
Monthly
Composite
Effluent
Total Silver (µg/L) 7
Monitor and Report
Quarterly
Composite
Effluent
Chronic Toxicity 8
Cenodaphn►a dubia Pass/Fad at 6% effluent
Quarterly
Composite
Effluent
Effluent Pollutant Scan
Monitor and Report
Footnote 9
Footnote 9
Effluent
Dissolved Oxygen (DO) (mg/L) 10
Variable 11
Grab
Upstream,
Downstream
Temperature (°C) 10
Variable 11
Grab
Upstream,
Downstream
All footnotes are listed on the following page.
Page 9 of 20

Permit NC0023973
Footnotes:
1. Submit discharge monitoring reports electronically using NC DWR's eDMR application system; see Section
A. (12.).
2. Upstream is at a point equidistant between the radio tower north of the WWTP and the northern end of the
dredge spoil island immediately east of the outfall. Downstream is at a point equidistant between the mouth
of Barnards Creek and the southern end of the dredge spoil island immediately east of the outfall.
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal)
4 Limit and monitor only if the facility adds chlorine or chlorine derivatives to wastewater that is eventually
discharged. The Division shall consider ali effluent TRC values reported below 50 µg/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory (including field certified), even if these values fall below 50 µg/L.
5. Total Nitrogen = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen, NO3-N is Nitrate Nitrogen,
and NO2-N is Nitrite Nitrogen.
6. The facility shall follow the compliance schedule detailed in Section A. (9.). The Permittee shall achieve
compliance with these limitations by March 1, 2022.
7. Total Silver shall be monitored using "clean" sampling techniques and reported to the lower reporting level
of the procedure.
8. Whole Effluent Toxicity shall be monitored using the Pass/Fail Chronic Toxicity test with Ceriodaphnia dubia
at 6% effluent. Samples shall be taken in March, June, September and December; see Section A. (5.).
9. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit; see Section A. (6 ).
10. The Permittee has deferred receiving -stream sampling to the Lower Cape Fear River Program by
memorandum of agreement (MOA). Should this MOA terminate for any reason, the Permittee shall
immediately inform the Division in writing and immediately resume instream monitoring in accordance with
this permit.
11 Stream samples shall be collected 3/week from June 1 through September 30, and collected weekly from
October 1 through May 31.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 10 of 20

Permit NCO023973
A.(5.) CHRONIC TOXICITY PERMIT LIMIT (Quarterly) [15A NCAC 02B.0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 3.0% at 12 MGD; 4.0% at 16 MGD; 5.0% at 20 MGD;
and 6.0% at 24 MGD.
The permit holder shall perform at a minimum, guarterlX monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions
or "North Carolina Phase H Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or
subsequent versions. The tests will be performed during the months of March, June, September and December.
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.
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 H 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 on the Effluent Discharge
Monitoring Form (MR -1) for the months in which tests were performed, using the parameter code TGP311 for the
pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT -3 (original) is to be sent to the
following address
Attention: North Carolina Division of Water Resources
Water Sciences Section / Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
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 toxicity sample 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 toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The report shall be submitted to the Water Sciences Section at the address
cited above.
Should the Permittee fail to monitor during a month in which 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 permit 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.
Page 11 of 20

Permit NC0023973
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.
Page 12 of 20

Permit NCO023973
A.(6.) EFFLUENT POLLUTANT SCAN (Municipal POTWs) [G S 143-215.1(b)]
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below One scan
must be performed in each of the following years: 2019, 2020, and 2021. Analytical methods shall be in accordance
with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present in
concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly toxicity
test each year, and must represent seasonal variation [i.e., do not sample in the same quarter every year]. Unless
otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N, NH3-N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitnte
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631 E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile orranic compounds:
Acrolem
Acrylonitnle
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvmyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Trans-1,2-dichloroethylene
1, 1 -dichloroethylene
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2 -tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1 -trichloroethane
1,1,2 -trichloroethane
Tnchloroethylene
Vinyl chloride
Acid -extractable compounds:
P -chloro -m -cresol
2 -chlorophenol
2,4-dichlorophenol
2,4 -dimethylphenol
4,6-dnutro-o-cresol
2,4-dinitrophenol
2-mtrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6 -trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Page 13 of 20
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di -n -butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2 -dichlorobenzene
1,3 -dichlorobenzene
1,4 -dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dmitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno (1, 2, 3 -cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-mtrosodunethylamme
N-mtrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-tnchlorob enzene

Permit NCO023973
Reporting. Test results shall be reported on DWR Form -A MR-PPAI (or in a form approved by the Director) by
December 31" of each designated sampling year. The report shall be submitted to the following address: NC DEQ
/ DWR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal
facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional
toxicity testing requirements specified in Federal Regulation 40 CFR 122.210)(5). The US EPA requires four (4)
toxicity tests for a test organism other than the test species currently required in this permit. The multiple species
tests should be conducted either quarterly for a 12 -month period prior to submittal of the permit renewal
application, or four tests performed at least annually in the four and one-half (4%) year period prior to the
application. These tests shall be performed for acute or chronic toxicity, whichever is specified in this permit. The
multiple species toxicity test results shall be filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section / Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional
toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of
EPA Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting
Unit.
Page 14 of 20

Permit NCO023973
A. (7.) MODELING REQUIItEMENT [G. S. 143-215.1 (b)]
1. Dilution Study for 12 MGD:
a) Should the Permittee choose to perform a Dilution Study for Outfall 001 to determine effluent dilution in
the Cape Fear River prior to expansion above 12 MGD, then the Permittee shall submit a Dilution Study
Plan to the Division for review and approval. The Plan shall include a proposed modeling approach and
justification for the use of the selected model (CORMIX or equivalent), a proposed sampling protocol,
and a timeline for completion of the study.
A final model report shall be submitted to the Division within 30 days of completion of the study. The
report shall include a summary of all data collected, model assumptions, model setup, model input and
model results. The report shall be submitted to the following address:
NC Division of Water Resources
NPDES Complex Permitting Unit
1617 Mail Service Center
Raleigh, NC 2699-1617
b) The dilution factor determined by the CORMIX model (or equivalent) shall be used by the Permittee for
the chronic effluent test concentration once the model is reviewed and approved by the Division.
2. Dilution Study for expanded flows:
a) The CORMIX (or equivalent) model used to determine dilution for Outfall 001 at 12 MGD shall be
updated to evaluate dilution for the proposed expanded flows (16 MGD, 20 MGD, and 24 MGD).
However, if a model was not developed for 12 MGD, then the Permittee shall submit a Dilution Study
Plan for 16 MGD to the Division for review and approval prior to expansion. Guidelines detailed in
Subsection A. (7.)(1.) above, shall be followed for the 16 MGD dilution study and model
The Permittee shall submit a revised model providing additional information regarding end -of -pipe
dilution at the same time as the Authorization to Construct (AtC) application is submitted. The model
shall address dilution at the approved increased flow rate into the Cape Fear River at M'Kean Maffit
WWTP's discharge point for the proposed discharge configuration. The model report shall be submitted
to the following address
NC Division of Water Resources
NPDES Complex Permitting Unit
1617 Mail Service Center
Raleigh, NC 2699-1617
b) The dilution factor determined by the CORMIX model (or equivalent) shall be used by the permittee for
the chronic effluent test concentration once the model is reviewed and approved by the Division.
Page 15 of 20

Permit NCO023973
A. (8.) MERCURY MINIMIZATION PLAN (MMP) [G.S. 143-215.1 (b)]
The Permittee shall develop and implement a Mercury Minimization Plan (MMP) during this permit term. The
MMP shall be developed by September 1, 2018, and shall be available for inspection on-site. A sample MMP was
developed through a stakeholder review process and has been placed on the Division website for guidance
(http://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-
wastewater-permits, under Model Mercury Minimization Plan). The MMP should place emphasis on
identification of mercury contributors and goals for reduction. Results shall be summarized and submitted with
the next permit renewal. Performance of the MMP will meet the requirements of the TMDL (Total Maximum
Daily Load) for mercury approved by USEPA on October 12, 2012, unless and until a Waste Load Allocation
specific to this facility is developed and this NPDES permit is amended to require further actions to address the
Waste Load Allocation.
A.(9.) SCHEDULE OF COMPLIANCE FOR TOTAL COPPER LIMITATIONS [G.S 143-215.1(b)]
1. By March 1, 2019, the Permittee shall submit to the Division of Water Resources a Corrective Action
Plan summarizing the strategy or actions to be taken to achieve compliance with the Total Copper
limitations listed in Sections A. (1.) through A. (4.), which includes specific dates for completion or
implementation of each action
2. By March 1, 2020, the Permittee shall submit a report to the Division summarizing actions taken in
accordance with the Corrective Action Plan submitted and approved by DWR.
3. By March 1, 2021, the Permittee shall submit a report to the Division summanzmg actions taken during
the previous year to achieve compliance with the final copper limitations. The actions shall be in
accordance with the Corrective Action Plan submitted and approved by DWR.
4. The Permittee shall achieve compliance with Total Copper limitations specified in Sections A. (1.)
through A. (4 ) by March 1, 2022.
Upon approval of the Corrective Action Plan by the Division, the report and actions become an enforceable part
of this permit. Any modifications to the schedule shall be requested to the Division at least ninety (90) days before
the deadline. Modifications to the schedule in excess of four (4) months will be subject to public notice.
Corrective Action Plan and Reports shall include the owner's name, NPDES permit number and Permittee contact
person, and shall be submitted to:
(1) NCDEQ / Division of Water Quality
NPDES Permitting
1617 Mail Service Center
Raleigh, NC 27699-1617
Page 16 of 20
(2) NCDEQ / Division of Water Quality
Wilmington Regional Office
127 Cardinal Drive Ext.
Wilmington, NC 28405

Permit NCO023973
A. (10.) HISTORICAL PERMIT LIMITS
The Division recognizes that prior to issuance of this permit, the M'Kean Maffitt (Southside) WWTP was
permitted to discharge with secondary limits of 25.0 mg/L CBOD5, 30.0 mg/L TSS, and no limit for NH3-N. At
the permitted flow of 12.0 MGD, these limits translate approximately to mass loads of 457 tons per year (tpy)
BODS, 548 tpy TSS, and 365 tpy NH3-N (assuming 20 mg/L). The mass loads described in this paragraph will be
one factor the Division considers when developing future wasteload allocations resulting from the TMDL process
or when considering future expansion requests for the M'Kean Maffitt WWTP.
A. (11.) ANTI -BACKSLIDING
The BODS and NH3-N limits in this permit may be replaced with less stringent limits without violating state and
Federal anti -backsliding provisions if:
1. Material and substantial alterations or additions to the permitted facility occurred after permit issuance
that justifies less stringent limits;
2. Events occurred beyond the Permittee's control for which there is no reasonably available remedy;
3. Permittee has properly installed and operated required treatment equipment that cannot achieve perinit
limits; or
4 New information (other than revised regulations, guidance, or test methods) is available that justifies less
stringent limits;
and provided that the Division deems such modification appropriate and consistent with applicable laws and
regulations
Page 17 of 20

Permit NCO023973
A.(12.) 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):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a.)1
The Permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be 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. Until such time that the state's eDMR application is compliant with
EPA's Cross -Media Electronic Reporting Regulation (CROMERR), Permittees will be required to submit all
discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR
to the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a Permittee is unable to use the eDMR system due to a demonstrated 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 mailing address above. 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;
Pretreatment Program Annual Reports; and
Clean Water Act (CWA) Section 316(b) Annual Reports.
The Permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver
from Electronic Reporting" section below)
Page 18 of 20

Permit NCO023973
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) that is the 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 Electronic Reporting Rule is
found at:
https://www.federalregister.gov/documents/2015/ 10/22/2015-24954/national-pollutant-discharge-
elimination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
How to Request a Waiver from Electronic Reporting
The Permittee may seek a temporary electronic reporting waiver from the Division To obtain an 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
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http Hdeg.ne.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b.) and Supersedes Section B. (11.) (d.)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part 11, Section
B (11.) (a.) or by a duly authorized representative of that person as described in Part II, Section B (11.) (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.
http•//decd nc gov/about/divisions/water-resources/edmr
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Permit NCO023973
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, underpenalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly 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].
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