NC0030759_Draft Permit_20240820

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Ms. Lisa Joseph
Resource Recovery Manager
City of Raleigh
P. O. Box: 590
Raleigh, North Carolina 27602
Dear Ms. Joseph:
NORTH CAROLINA
Envkv n ental Qmftty
August 20, 2024
Subject: Draft NPDES Permit Renewal
Permit NCO030759
Smith Creek Resource Recovery Facility
Wake County
Grade IV Biological WPCS
SIC Code 4952
Enclosed with this letter is a copy of the Draft NPDES permit renewal for your facility. Please
review this draft carefully to ensure thorough understanding of the requirements and conditions it
contains. There are several changes from the existing permit, including the following:
• By Permittee Request, a 4.0 MGD flow tier has been added to the permit. This is an
intermediate flow tier between 3.0 MGD and 6.0 MGD flow tiers. As such, Effluent
Limitations and Monitoring Requirements for the 4.0 MGD flow tier have been included in
the permit.
A special condition to monitor effluent PFAS chemicals quarterly has been added to the
permit, to be effective six (6) months after EPA has a wastewater method in 40 CFR136
method published in the Federal Register [See Special Condition A.(10.) PFAS Monitoring
Requirements].
• The facility components list has been updated.
• Language has been added to Footnote 1 to account for influent, effluent, upstream and
downstream abbreviations [See A.(L)].
• Some of the wording has changed in Special Condition A.(6.), Chronic Toxicity Permit
Limit, please review each paragraph carefully.
• Special Condition A.(7.) has been modified to include the specific three years in which the
Effluent Pollutant Scan shall be performed (2026, 2027, and 2028). In addition, at the end of
the Special Condition, 2nd species Toxicity Testing Requirements for municipal permit
renewals per Federal Regulations [40 CFR 122.210)(5)] have been added.
• A notation was made concerning the Electronic Reporting Rule — NPDES Electronic
Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline to December 21,
2025.
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699.1611
N�N�rH cnrvci iNA �' 919.707.9000

• Federal regulations require electronic submittal of all discharge monitoring reports
(DMRs) and program reports. 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 NPDES permit [See Special Condition A. (12.)].
• Parameter codes have been added to the Effluent Limitations and Monitoring Requirements
[ See A. (1.)].
The NPDES standard conditions (Parts II, III, and IV) that are a part of the permit are not included
in this draft document (cover, map, and Part I). The conditions are the same as in your current
permit except that agency and division names have been updated. The latest version is available at
https://bit.ly/3k5NFaL and can be viewed online or downloaded as a PDF file.
Concurrent with this notification the Division is publishing a notice in a newspaper having
circulation in the general Wake County area, soliciting public comments on this draft permit.
Please provide any written comments you may have to the following: NCDEQ/DWR, NPDES
Permitting Branch, 1617 Mail Service Center, Raleigh, NC 27699-1617 no later than 30 days after
receipt of this draft permit.
Following the 30-day public comment period, the Division will review all pertinent comments and
take appropriate action prior to issuing a final permit. If you have questions concerning this draft
permit, please call me at [phone] or by email at [e-mail].
Sincerely,
Euy"Doeu8lyned by:
PdLL
96070W3A3D�EA..
Urva Patel, Environmental Engineer II
NPDES Municipal Permitting Unit
Division of Water Resources, NC DEQ
Hardcopy: NPDES Files
Ecopy: US EPA Region 4
DWR/Raleigh Regional Office/Water Quality/Michael Hall
DWR/Operator Certification Program/Jeff Talbot
DWR/Ecosystems Branch/Tammy Hill
DWR/Aquatic Toxicology Branch/Cindy Moore & Molly Nicholson
E Q North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
t o t:nv� menm� ausm

Permit NCO030759
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
N( PDES)
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
City of Raleigh
is hereby authorized to discharge wastewater from a facility located at the
Smith Creek Resource Recovery Facility (RRF)
8505 Ligon Mill Road
Wake Forest, NC 27587
Wake County
to receiving waters designated as the Neuse River in the Neuse River Basin in accordance with the
effluent limitations, monitoring requirements, and other applicable conditions set forth in Parts I, II, III,
and IV hereof.
This permit shall become effective............ Month xx, 2024.
This permit and authorization to discharge shall expire at midnight on February 28, 2029.
Signed this day Month xx, 2024.
DRAFT
Michael J. Montebello, NPDES Permitting Branch Chief
Division of Water Resources
Page 1 of 17

Permit NC0030759
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 effective date, 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 City of Raleigh
is hereby authorized to:
1. Continue to operate and maintain the wastewater treatment system works identified on the Cover, an
existing 3.0 MGD facility consisting of the following components:
• Mechanical bar screens;
• Influent Parshall flume;
• Continuous recording flow measurement;
• Influent pump station with submersible pumps
• Stacked Trays Grit removal;
• Dual oxidation ditches;
• Anaerobic/anoxic treatment basins;
• Dual final clarifiers;
• Tertiary filters;
• Ultraviolet disinfection;
• Cascade aeration;
• Effluent Parshall flume;
• Effluent flow meter;
• Automatic sampler;
• Chemical feed system available when needed.
2. After receiving an Authorization to Construct from the Division of Water Resource, construct and after
submitting an Engineer's certification, operate facilities giving the system an ultimate treatment
capacity of 4.0 MGD;
3. After receiving an Authorization to Construct from the Division of Water Resource, construct and after
submitting an Engineer's certification, operate facilities giving the system an ultimate treatment
capacity of 6.0 MGD;
4. Operate facilities for bulk and reclaimed water distribution in accordance with Non -Discharge Permit
WQ0032757; and,
5. Discharge treated wastewater from said treatment works at the location specified on the attached map
through Outfall 001 into the Neuse River, a class C-NSW water in the Neuse River Basin and 03020201
HUC.
Page 2 of 17

Permit NCO030759
PART
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [3.0 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.]
Grade IV Biological Water Pollution Control System [15A NCAC 08G .0302]
(a.) During the period beginning on the effective date of the permit and lasting until expansion above
3.0 MGD or permit expiration, whichever is sooner, the permittee is authorized to discharge
treated municipal wastewater from Outfall 001. Such discharges shall be limited and monitored'
by the permittee as specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
'Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow 50050
3.0 MGD
Continuous
Recording
I or E
Total Monthly Flow (MG) 82220
Monitor and Report
Monthly
Recorded or
Calculated
I or E
BOD, 5 day, 20°C 3 CO310
(Apr 1 - Oct 31)
5.0 mg/L
7.5 mg/L
2/week 4
Composite
I and E
BOD, 5 day, 20°C 3
(Nov 1 -Mar 0- CO310
10.0 mg/L
15.0 mg/L
2/week 4
Composite
I and E
Total Suspended Solids3 CO530
30.0 mg/L
45.0 mg/L
2/week 4
Composite
I and E
NH3 as N (Apr 1 - Oct 31) CO610
1.0 mg/L
3.0 mg/L
2/week4
Composite
E
NH3 as N (Nov 1 - Mar 31) CO610
2.0 mg/L
6.0 mg/L
2/week°
Composite
E
Fecal Coliform
(geometric mean) 31616
200/100 mL
400/100 mL
2/week4
Grab
E
Dissolved Oxygen 00300
Daily Average not less than 5.0 mg/L
Daily
Grab
E
pH 00400
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Temperature (°C) 00010
Monitor and Report
Daily
Grab
E
TKN (mg/L)5 00625
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N (mg/L)5 00630
Monitor and Report
Weekly
Composite
E
Total Nitrogen 5 (mg/L) CO600
Monitor and Report
Weekly
Calculated
E
TN Load 6,7 QM600
QY600
Monitor and Report (lb/month)
22,832lb/yr
Monthly
Annually
Calculated
E
Total Phosphorus (mg/L) CO665
2.0 mg/L (Quarterly Average)'
Weekly
Composite
E
Hardness' -Total as CaCO3 (mg/L) 00900
Monitor and Report
Quarterly
Composite
E
Chronic Toxicity 10 TGP3B
Monitor and Report
Quarterly
Composite
E
Effluent Pollutant Scan" NCO]
Monitor and Report
Footnote 11
Footnote 11
E
PFAS (ng/L) variable
Footnote 12
Footnote 12
Grab
E
Hardness' -Total as CaCO3 (mg/L) 00900
Monitor and Report
Quarterly
Grab
U
Dissolved Oxygen (mg/L) 00300
Monitor and Report
Variable'
Grab
U and D
Temperature °C 00010
Monitor and Report
Variable'
Grab
U and D
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Special Condition A. (12.).
2. Sample locations I -Influent, E-Effluent, U-Upstream at least 100 feet from the outfall, D-Downstream = (1) NC
HWY 401 and (2) NCSR 2215. Upstream and downstream samples shall be grab samples collected 3/week
during June, July, August, and September and 1/week during the remainder of the year. Instream sampling
requirements are provisionally waived in light of the permittee's participation in the Lower Neuse River Basin
Association. Should participation in the association cease, all instream sampling requirements are immediately
reinstated.
Footnotes continue on the next page.
Page 3 of 17

Permit NC0030759
Footnotes continued from A.(L) Effluent Limitations and Monitoring Requirements at 3.0 MGD:
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Twice per week sampling must occur on any two non-consecutive days during the calendar week.
5. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
6. TN Load is the mass load of TN discharged by the permittee in a period of time. See Special Condition A.(4.).
7. Compliance with these limits shall be determined in accordance with Special Condition A.(5.), Annual Limits
for Total Nitrogen.
8. The quarterly average for total phosphorus shall be the average of composite samples collected during each
calendar quarter (January - March, April - June, July - September, October - December).
9. The permittee shall sample instream hardness upstream of the facility's discharge. The sample shall be
representative of the hardness in the stream. Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals (cadmium, copper, lead, nickel, silver, and zinc).
10. Chronic Toxicity (Ceriodaphnia dubia) P/F at 6.5% with testing in March, June, September, and December. See
Special Condition A.(6.).
11. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(7.).
12. See Special Condition A.(10.).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 17

Permit NCO030759
A.(2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [4.0 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.]
Grade IV Biological Water Pollution Control System (I 5A NCAC 08G .0302]
(a.) During the period beginning upon expansion to 4.0 MGD and lasting until expansion to 6.0 MGD
or permit expiration, whichever is sooner, the permittee is authorized to discharge treated municipal
wastewater from Outfall 001. Such discharges shall be limited and monitored' by the permittee as
specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow 50050
4.0 MGD
Continuous
Recording
I or E
Total Monthly Flow (MG) 82220
Monitor and Report
Monthly
Recorded or
Calculated
I or E
BOD, 5 day, 200C'
(Apr 1 - Oct 31) C0310
5.0 mg/L
7.5 mg/L
2/week4
Composite
I and E
BOD, 5 day, 200C' C0310
(Nov 1 - Mar 31)
10.0 mg/L
15.0 mg/L
2/week °
Composite
I and E
Total Suspended Solids' C0530
30.0 mg/L
45.0 mg/L
2/week 4
Composite
I and E
NI-b as N (Apr 1 - Oct 31) C0610
1.0 mg/L
3.0 mg/L
2/week4
Composite
E
NH3 as N (Nov 1 - Mar 31) C0610
2.0 mg/L
6.0 mg/L
2/week"
Composite
E
Fecal Coliform M616
(geometric mean)
200/100 mL
400/100 mL
2/week4
Grab
E
Dissolved Oxygen 00300
Daily Average not less than 5.0 mg/L
Daily
Grab
E
pH 00400
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Temperature (°C) 00010
Monitor and Report
Daily
Grab
E
TKN (mg/L)5 00625
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N (mg/L)5 00630
Monitor and Report
Weekly
Composite
E
Total Nitrogen 5 (mg/L) C0600
Monitor and Report
Weekly
Calculated
E
QM600
TN Load 6.� QY600
Monitor and Report (lb/month)
22,8321b/yr
Monthly
Annually
Calculated
E
Total Phosphorus (mg/L) C0665
2.0 mg/L (Quarterly Average)'
Weekly
Composite
E
Hardness' -Total as CaCO3 (mg/L) 00900
Monitor and Report
Quarterly
Composite
E
Chronic Toxicity 10 TGP3B
Monitor and Report
Quarterly
Composite
E
Effluent Pollutant Scan NC01
Monitor and Report
Footnote 11
Footnote I 1
E
PFAS (ng/L) variable
Footnote 12
Footnote 12
Grab
E
Hardness' -Total as CaCO3 (mg/L) 00900
Monitor and Report
Quarterly
Grab
U
Dissolved Oxygen (mg/L) 00300
Monitor and Report
Variable'
Grab
U and D
Temperature °C 00010
Monitor and Report
Variable'
Grab
U and D
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Special Condition A. (12.).
2. Sample locations I -Influent, E-Effluent, U-Upstream at least 100 feet from the outfall, D-Downstream = (1) NC
HWY 401 and (2) NCSR 2215. Upstream and downstream samples shall be grab samples collected 3/week
during June, July, August, and September and 1/week during the remainder of the year. Instream sampling
requirements are provisionally waived in light of the permittee's participation in the Lower Neuse River Basin
Association. Should participation in the association cease, all instream sampling requirements are immediately
reinstated.
Footnotes continue on the next page.
Page 5 of 17

Permit NC0030759
Footnotes continued from A.(2.) Effluent Limitations and Monitoring Requirements at 4.0 MGD:
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Twice per week sampling must occur on any two non-consecutive days during the calendar week.
5. For a given wastewater sample, TN = TKN + NO3-N + NOz-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
6. TN Load is the mass load of TN discharged by the permittee in a period of time. See Special Condition A.(4.).
7. Compliance with these limits shall be determined in accordance with Special Condition A.(5.), Annual Limits
for Total Nitrogen.
8. The quarterly average for total phosphorus shall be the average of composite samples collected during each
calendar quarter (January - March, April - June, July - September, October - December).
9. The permittee shall sample instream hardness upstream of the facility's discharge. The sample shall be
representative of the hardness in the stream. Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals (cadmium, copper, lead, nickel, silver, and zinc).
10. Chronic Toxicity (Ceriodaphnia dubia) P/F at 8.5% with testing in March, June, September, and December. See
Special Condition A.(6.).
11. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(7.).
12. See Special Condition A.(10.).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 6 of 17

Permit NCO030759
A.(3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [6.0 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.]
Grade IV Biological Water Pollution Control System [15A NCAC 08G .0302]
(a.) During the period beginning upon expansion to 6.0 MGD and lasting until permit expiration, the
permittee is authorized to discharge treated municipal wastewater from Outfall 001. Such
discharges shall be limited and monitored' by the permittee as specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow 50050
6.0 MGD
Continuous
Recording
I or E
Total Monthly Flow (MG) 82220
Monitor and Report
Monthly
Recorded or
Calculated
I or E
BOD, 5 day, 20°C 3
(Apr 1 - Oct 31) C0310
5.0 mg/L
7.5 mg/L
2/week a
Composite
I and E
BOD, 5 day, 20°C 3 C0310
(Nov 1 -Mar 31)
10.0 mg/L
15.0 mg/L
2/week°
Composite
I and E
Total Suspended Solids3 C0530
30.0 mg/L
45.0 mg/L
2/week°
Composite
I and E
NH3 as N (Apr 1 - Oct 31) C0610
1.0 mg/L
3.0 mg/L
2/week4
Composite
E
NH3 as N (Nov 1 - Mar 31) C0610
2.0 mg/L
6.0 mg/L
2/week4
Composite
E
Fecal Coliform 31616
(geometric mean)
200/100 mL
400/100 mL
2/week4
Grab
E
Dissolved Oxygen 00300
Daily Average not less than 5.0 mg/L
Daily
Grab
E
pH 00400
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Temperature (°C) 00010
Monitor and Report
Daily
Grab
E
TKN (mg/L)5 00625
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N (mg/L)5 00630
Monitor and Report
Weekly
Composite
E
Total Nitrogen 5 (mg/L) C0600
Monitor and Report
Weekly
Calculated
E
TN 6,7 QM600
Load
°� QY600
Monitor and Report (lb/month)
22,832 lb/yr
Monthly
AnnuallyCalculated
E
Total Phosphorus (mg/L) C0665
2.0 mg/L (Quarterly Average)'
Weekly
Composite
E
Hardness9 -Total as CaCO3 (mg/L) 00900
Monitor and Report
Quarterly
Composite
E
Chronic Toxicity 11 TGP3B
Monitor and Report
Quarterly
Composite
E
Effluent Pollutant Scan" NC01
Monitor and Report
Footnote 11
Footnote 11
E
PFAS (ng/L) variable
Footnote 12
Footnote 12
Grab
E
Hardness9 -Total as CaCO3 (mg/L) 00900
Monitor and Report
Quarterly
Grab
U
Dissolved Oxygen (mg/L) 00300
Monitor and Report
Variable'
Grab
U and D
Temperature °C 00010
Monitor and Report
Variable'
Grab
U and D
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Special Condition A. (12.).
2. Sample locations I -Influent, E-Effluent, U-Upstream at least 100 feet from the outfall, D-Downstream = (1) NC
HWY 401 and (2) NCSR 2215. Upstream and downstream samples shall be grab samples collected 3/week
during June, July, August, and September and 1/week during the remainder of the year. Instream sampling
requirements are provisionally waived in light of the permittee's participation in the Lower Neuse River Basin
Association. Should participation in the association cease, all instream sampling requirements are immediately
reinstated.
Footnotes continue on the next page.
Page 7 of 17

Permit NCO030759
Footnotes continued from A.(3.) Effluent Limitations and Monitoring Requirements at 6.0 MGD:
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Twice per week sampling must occur on any two non-consecutive days during the calendar week.
5. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
6. TN Load is the mass load of TN discharged by the permittee in a period of time. See Special Condition A.(4.).
7. Compliance with these limits shall be determined in accordance with Special Condition A.(5.), Annual Limits
for Total Nitrogen.
8. The quarterly average for total phosphorus shall be the average of composite samples collected during each
calendar quarter (January - March, April - June, July - September, October - December).
9. The permittee shall sample instream hardness upstream of the facility's discharge. The sample shall be
representative of the hardness in the stream. Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals (cadmium, copper, lead, nickel, silver, and zinc).
10. Chronic Toxicity (Ceriodaphnia dubia) P/F at 12% with testing in March, June, September, and December. See
Special Condition A.(6.).
11. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A.(7.).
12. See Special Condition A.(10.).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (4.) CALCULATION OF TOTAL NITROGEN LOADS
[G. S. 143-215.1(B)]
(a.) The Permittee shall calculate monthly and annual TN Loads as follows:
(i.) Monthly TN Load (lb/mo) = TN x TMF x 8.34
where:
TN = the average Total Nitrogen concentration (mg/L) of the composite
samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the month
(MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual TN Load (lb/yr) = Sum of the 12 Monthly TN Loads for the calendar year
(b.) The Permittee shall report monthly Total Nitrogen results (mg/L and lb/mo) in the discharge
monitoring report for that month and shall report each year's annual results (lb/yr) in the December
report for that year.
Page 8 of 17

Permit NC0030759
A. (5.) ANNUAL LIMITS FOR TOTAL NITROGEN
[G.S. 143-215.1(B)]
(a.) Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin apply on a calendar year basis.
(b.) For any given calendar year, the permittee shall be in compliance with the annual TN Load limit in
this Permit if:
(i.) the permittee's annual TN discharge is less than or equal to its TN Load limit, or
(ii.) the permittee is a co-permittee member of a compliance association.
(c.) If the permittee is not a co-permittee member of a compliance association and the permittee's
cumulative annual TN discharge exceeds the effective TN Load limit in this permit at any point
during the calendar year, the permittee is in violation of its TN Load limit, and each day of a
continuing violation shall constitute a separate violation.
(d.) The TN Load limit in this Permit (if any) may be modified as the result of allowable changes in the
permittee's TN allocation.
(i.) Allowable changes include those resulting from purchase of TN allocation from the Wetlands
Restoration Fund; purchase, sale, trade, or lease of allocation between the permittee and other
dischargers; regionalization; and other transactions approved by the Division.
(ii.) The permittee may request a modification of the TN Load limit in this Permit to reflect
allowable changes in its TN allocation. Upon receipt of timely and proper application, the
Division will modify the permit as appropriate and in accordance with state and federal
program requirements.
(iii.) Changes in TN limits become effective on January 1 of the year following permit
modification. The Division must receive application no later than August 31 for changes
proposed for the following calendar year.
(iv.) Application shall be sent to:
NCDWR / NPDES Wastewater Program
Attn: Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(e.) If the permittee is a member and co-permittee of an approved compliance association, its TN
discharge during that year is governed by that association's group NPDES permit and the TN limits
therein.
(i.) The permittee shall be considered a co-permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN allocations will be updated annually and in
accordance with state and federal program requirements.
(iii.) If the permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the association's
NPDES permit.
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
The TN monitoring and reporting requirements in this Permit remain in effect until expiration of this
Permit and are not affected by the permittee's membership in a compliance association.
Page 9 of 17

Permit NC0030759
A.(6.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[ 15A NCAC 02B .0200] [15A NCAC 02B .0500 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 6.5% at 3.0 MGD, 8.5% at 4.0 MGD, and 12% at
6.0 MGD.
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.
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 TGP3B
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:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Or, results can be sent to the email, ATForms.ATB(a)deq.nc gov .
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.
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 10 of 17

Permit NCO030759
A.(7.) ADDITIONAL MONITORING REQUIREMENTS FOR PERMIT RENEWAL
[G.S. 143-215.1(b)]
(a.) Effluent Pollutant Scans. 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: 2026, 2027, and
2028. For teach expansion above 3.0 MGD, the Permittee shall perform three effluent pollution scans in
the three following years after expansion occurs. 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. Each annual sample shall coincide with one quarterly toxicity
test each year (see Condition A.(5.) (CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY))), and each
must be collected in a different calendar quarter to 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) C0610 Trans-1,2-dichloroethylene 34546 Bis (2-chloroethyl) ether 34273
Chlorine (total residual, TRC) 50060 1, 1 -dichloroethylene 34501 Bis (2-chloroisopropyl) ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis (2-ethylhexyl) phthalate COIN
Nitrate / Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus
C0665
Methyl chloride
34418
4-chlorophenyl phenyl ether
34641
Total dissolved solids
70295
Methylene chloride
34423
Chrysene
34320
Hardness
00900
1,1,2,2-tetrachloroethane
81549
Di-n-butyl phthalate
39110
Antimony
01097
Tetrachloroethylene
34475
Di-n-octyl phthalate
34596
Arsenic
01002
Toluene
34010
Dibenzo(a h)anthracene
34556
Beryllium
01012
1, 1, 1 -trichloroethane
34506
1,2-dichlorobenzene
34536
Cadmium
01027
1,1,2-trichloroethane
34511
1,3-dichlorobenzene
34566
Chromium
C0034
Trichloroethylene
39180
1,4-dichlorobenzene
34571
Copper
01042
Vinyl chloride
39175
3,3-dichlorobenzidine
34631
Lead
01051
Acid -extractable compounds:
Diethyl phthalate
34336
Mercury (Method 1631E)
COMER
P-chloro-m-cresol
34452
Dimethyl phthalate
34341
Nickel
01067
2-chlorophenol
34586
2,4-dinitrotoluene
34611
Selenium
01147
2,4-dichlorophenol
34601
2,6-dinitrotoluene
C0626
Silver
01077
2,4-dimethylphenol
34606
1,2-diphenylhydrazine
34346
Thallium
01059
4,6-dinitro-o-cresol
34657
Fluoranthene
C0376
Zinc
01092
2,4-dinitrophenol
34616
Fluorene
34381
Cyanide
00720
2-nitrophenol
34591
Hexachlorobenzene
C0700
Total phenolic compounds
32730
4-nitrophenol
34646
Hexachlorobutadiene
C0702
Volatile orranic compounds:
Pentachlorophenol
39032
Hexachlorocyclo-pentadiene
34386
Acrolein
34210
Phenol
34694
Hexachloroethane
34396
Acrylonitrile
34215
2,4,6-trichlorophenol
34621
Indeno(1,2,3-cd)pyrene
34403
Benzene
34030
Base -neutral compounds:
Isophorone
34408
Bromoform
32104
Acenaphthene
34205
Naphthalene
34696
Carbon tetrachloride
32102
Acenaphthylene
34200
Nitrobenzene
34447
Chlorobenzene
34301
Anthracene
CO220
N-nitrosodi-n-propylamine
34428
Chlorodibromomethane
34306
Benzidine
39120
N-nitrosodimethylamine
34438
Chloroethane
85811
Benzo(a)anthracene
C0526
N-nitrosodiphenylamine
34433
2-chloroethyl vinyl ether
34576
Benzo(a)pyrene
34247
Phenanthrene
34461
Chloroform
32106
3,4 benzofluoranthene
34230
Pyrene
34469
Dichlorobromomethane
32101
Benzo(ghi)perylene
34521
1,2,4-trichlorobenzene
C0551
1,1-dichloroethane
34496
Benzo(k)fluoranthene
34242
1,2-dichloroethane
32103
Bis (2-chloroethoxy) methane
34278
Page 11 of 17

Permit NC0030759
(b.) Effluent Scan Reporting. Test results shall be reported electronically via eDMR by December 31 st
of each designated sampling year, except that, subject to prior written approval by the Director, results
can be reported on DWR Form DMR-PPA-1 or other form approved by the Director. The permittee
must at least report completion of the test in the eDMR system by entering 44
1" or "Y" for parameter
code NCO - Annual Pollutant Scan. If written reports are approved, the report shall be submitted to
the following address:
North Carolina Division of Water Resources
Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Or the form may be uploaded at: https://edocs.deg.nc.goy/f.o ms/NPDES WW-EDMR-
Supplemental-Form
(c.) V-Species Toxicity Testing and Reporting.
(i.) In addition to the quarterly toxicity tests required in Condition A.(5.) (CHRONIC TOXICITY
PERMIT LIMIT (QUARTERLY)), the Permittee shall perform and report the results of four
(4) toxicity tests using the same test methods using a second species of test organism suitable
to the tests being conducted.
(ii.) The 2"d species toxicity tests shall be conducted either:
(A) Once per quarter in a single 12-month period (four samples); if this option is chosen, the
sample for each 2nd species test shall coincide with the quarterly samples collected for
(CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)); or
(B) Once per 12-month period in the four -and one-half year period prior to the scheduled
application for permit renewal (four samples); if this option is chosen, three of the
samples for the 2nd species test shall coincide with those for the annual effluent scans
and the coincident quarterly toxicity test, and each of the four annual samples shall be
collected in a different calendar quarter in order to represent seasonal variation.
(iii.) The results of the toxicity tests shall be submitted to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Or, results can be sent to the email, ATForms.ATB(ZWeq.nc aov .
(iv.) Results of the 2°d species tests shall also be summarized in Part E (Toxicity Testing Data) of
EPA Municipal Application Form 2A when submitting the permit renewal application to the
NPDES Wastewater Program.
The Permittee may contact the Division's Aquatic Toxicology Branch at 919-743-8401 for
guidance on conducting the additional toxicity tests and reporting of the results.
Page 12 of 17

Permit NCO030759
A. (8.) TOTAL NITROGEN ALLOCATIONS
[G.S. 143-215.1(B)]
(a.) The following table lists the Total Nitrogen (TN) allocations and offset credits assigned to, acquired
by, or transferred to or from the permittee in accordance with the Neuse River nutrient strategy
(15A NCAC 02B .0700) and the status of each as of permit issuance. These allocations are not
enforceable limits, nor do they supersede any TN limit(s) established elsewhere in this permit or in
the NPDES permit of a compliance association of which the permittee is a co-permittee Member.
ALLOCATION/ CREDITS
ALLOCATION/
AMOUNT'
CREDITS TYPE
SOURCE
DATE
STATIiS
Estuary
Discharge
(lb/yr)
(lb/yr)
Base Allocation
Assigned by Rule 2
12/7/97; 4/1/03
35,479
50,684
Active
Supplemental
Connection of Jones Dairy Farm
53,218
76,026
Active
Allocation
WWTP, NCO064149
TOTAL
88,697
126,711
Active
Footnotes:
1. Transport Factor = 70%.
2. Rule 15A NCAC 02B .0713 (formerly 02B .0234)
(b.) Any addition, deletion, or modification of the listed allocations and credits (other than
typographical errors) or any change in status of any of the listed allocations and credits (if the
facility has no TN Load limit, substitute "any change of allocation or credits to active status") shall
be considered a major modification of this permit and shall be subject to the public review process
afforded such modifications under state and federal rules.
A.(9.) MERCURY MINIMIZATION PLAN (MMP)
[G.S. 143-215.1 (b)]
The Permittee shall maintain and continue to implement the Mercury Minimization Plan (MMP) developed
in the previous permit term. The MMP shall continue to be available for inspection on -site. 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.(10.) PFAS MONITORING REQUIREMENT
[G.S. 143-215.1(b.)]
This reporting requirement for the per- and polyfluoroalkyl substances (PFAS) parameters listed under
Table 1 of EPA Method 1633 takes effect the first full calendar quarter following six (6) months after EPA
publishes the method under 40 CFR Part 136 in the Federal Register. Monitoring will be at a quarterly
frequency.
Find the current parameters listed under Table 1 of the Method 1633 Analysis of Per- and Polyfluoroalkyl
Substances (PFAS) in Aqueous, Solid, Biosolids, and Tissue Samples by LC-MS/MS (EPA, January 2024)
at:
https://www.epa.gov/system/files/documents/2024-01 /method-1633-final -for-web-postingpdf
Page 13 of 17

Permit NC0030759
A.(11.) CLARIFICATION OF MONITORING REQUIREMENTS
[G.S. 143-215.1 (b)]
In accordance with 15A NCAC 02B .0505 (c)(4), stream sampling may be discontinued when flow
conditions or extreme weather conditions could result in injury or death of the person(s) collecting the
samples. In such cases, on each day that sampling is discontinued, written justification for the
discontinuance shall be specified in the monitoring report for the month in which the event occurred. This
provision also applies to influent and effluent sampling.
A.(12.) ELECTRONIC REPORTING - DISCHARGE 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.)
• Section D. (6.)
• Section E. (5.)
Reporting
Records Retention
Monitoring Reports
1. Reportinu Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)I
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 monthly 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: httys://deq_nc.gov/about/divisions/water-resources/edmr .
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 following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
See "How to Request a Waiver from Electronic Reporting" section below.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
reported via the eDMR system no later than the last calendar day of the month following the completed
Page 14 of 17

Permit NC0030759
reporting period. 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, 2025, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
Sewer Overflow/Bypass Event Reports; and
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).
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 EPXs 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 EPXs NPDES Electronic Reporting
Rule is found at: https://www.federalre ister.gov/documents/2015/10/22/2015-24954/national-
pollutant-discharge-elimination-system-nudes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Reguest 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:
htip://deg.nc.gov/about/divisions/water-resources/edmr
Page 15 of 17

Permit NC0030759
4. Sianatory 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 II,
Section B. (I I.)(a) or by a duly authorized representative of that person as described in Part 1I, Section
B. (I1.)(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://deq.nc.aov/about/divisions/water-resources/edmr
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 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.)l
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 ].
Page 16 of 17

Permit NCO030759
Smith Creek RRF Facility
Ladtz : 35 54'23" Sit -Bash. 23-:F-C2 Location
Lw-Aude: ?B 3215" 4w
Stream Clan: C-N5.":
Recyore Stream: Ne wRHer North
Permitted FR;w: 3.0 rAGC. L.'-M'C and E.^ NIGC , iy.
Page 17 of 17