NC0066516_Draft Permit_20210309

4411 a' ti ,,
ROY COOPER i -s.
Governor
MICHAEL S.REGAN '
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
March 9, 2021
Mr. Chris Grimes,Utilities Operations Manager
Town of Fuquay-Varina
401 Old Honeycutt Road
Fuquay-Varina,NC 27526
Subject: Draft NPDES Permit Renewal
Permit NC0066516
Terrible Creek WWTP
Wake County
Facility Class IV
SIC Code 4952
Dear Mr. Grimes:
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:
• Upon completion of facility expansion in 2018, the Terrible Creek WWTP entered the
3.0 MGD flow tier. As such, effluent limitations and monitoring requirements for the 1.0
MGD flow tier have been removed from the permit.
• The component list of the Terrible Creek WWTP has been updated.
• The Terrible Creek WWTP is receiving wastewater from one Categorical Industrial User.
As a result, the monitoring requirement for effluent and instream conductivity has been
added to the permit.
• Given that the facility utilizes only ultraviolet for disinfection and no chlorine is present on
the site as backup disinfection, the total residual chlorine (TRC) limit and monitoring
requirement have been removed from the permit at both the 3.0 and the 6.0 MGD flow
tiers.
• Based on the reasonable potential analysis (RPA) showing reasonable potential to violate
state water quality standards, a monthly average limit of 15.7 µg/L and a daily maximum
limit of 22.4 µg/L for total copper at both the 3.0 and the 6.0 MGD have been added to the
permit with a requirement that samples be taken monthly[See A. (1.) and A. (2.)].
• The facility reported Selenium at less than detection,with a detection level<2 µg/L.
DWR's laboratory identifies the target Practical Quantification Limits(PQLs) for
Selenium as 1 pig/L. 15A NCAC 2B .0505 (e) (4) requires that 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. If no approved methods are determined capable of achieving
detection and reporting levels below permit discharge requirements,then the approved
Q 512 North CarolinallorthSalisbury DepartStreemetnt1 of16 Environmental17MailService Quality
I Raleigh I Division of WaterNorthCarolina Resou27rces
699 1617
D........a a rovircoaridal0.111 /" 919.707.9000

method with the lowest detection and reporting level must be used. The facility should
use sufficiently sensitive test methods for all pollutants, including when performing
Effluent Pollutant Scans.
• Based on Mercury TMDL evaluation showing mercury values reported at levels> 1 ng/L
and since the permitted flow is greater than 2 MGD, Special Condition A. (8.) Mercury
Minimization Plan has been added to the permit. Results of the MMP shall be summarized
and submitted with the next permit renewal. The annual monitoring requirement for
Mercury has been removed at both the 3.0 and the 6.0 MGD.
• 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.Further,the freshwater standards
for several metals are expressed as the dissolved form of the metals,and seven metals
have hardness-dependent equations.As a result,the NPDES Permitting Unit will need
site-specific effluent hardness data and instream hardness data,upstream of the discharge,
for each facility monitoring these metals in order to calculate permit limitations.
However, since the summer 7Q10 of the receiving stream is zero,upstream hardness
sampling is not necessary. Only effluent hardness has been added to the permit at a
monitoring frequency of quarterly[See A. (1.)and A. (2.)].
• Some of the wording has changed and an email address for electronic submittal of
toxicity testing results has been added 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(2022,2023,2024),and to allow for
electronic submittal. In addition,at the end of the Special Condition,2nd Species
Toxicity Testing Requirements for municipal permit renewals per Federal Regulations
[40 CFR 122.21 (j)(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. The current compliance date, effective January 4,2021,was extended as a fmal
regulation change published in the November 2,2020 Federal Register.
• 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. (9.)].
• Parameter codes have been added to the Effluent Limitations and Monitoring
Requirements [See A. (1.)and A. (2.)] and the Effluent Pollutant Scan[See A. (7.)].
• Regulatory citations have been added to the permit.
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
Page 2 of 3

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(919) 707-3644 or by email at [e-mail].
Sincerely,
EDocuSigned by:
llt;t•
B0B410C9F6204F7...
Min Xiao,Engineer
NPDES Permitting Unit
Hardcopy: NPDES Files
Ecopy: US EPA Region 4
pY g
DWR/Raleigh Regional Office/Water Quality/Scott Vinson
DWR/Operator Certification Program/Maureen Kinney
DWR/Ecosystems Branch/Mark Vander Borgh
DWR/Aquatic Toxicology Branch/Zach Thomas, Cindy Moore
Wake County Environmental Services/Ed Duke
Page 3 of 3

Permit NC0066516
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 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,
Town of Fuquay-Varina
is hereby authorized to discharge wastewater from a facility located at the
Terrible Creek WWTP
5812 Hill Top Road
East of Fuquay-Varina
Wake County
to receiving waters designated as Terrible Creek in the Neuse 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 M 01101 X X, 2021.
This permit and authorization to discharge shall expire at midnight on Month XX,202X.
Signed this day Month XX,2021.
>m
Draft
S.Daniel Smith,Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0066516
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility,whether for operation or discharge are hereby
revoked,and as of this 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 Town of Fuquay-Varina is hereby authorized to:
1. Continue to operate a 3.0 MGD wastewater treatment facility consisting of the following
components:
• Influent pump station
• Mechanical coarse bar screen
• Mechanical step bar screens
• Manual bar rack
• Grit removal
• Flow distribution box
• Two(2)5-stage conventional BNR basins
• Two(2)secondary clarifiers
• RAS pump station
• Two(2)ultrascreen disc filters
• UV disinfection
• Effluent flow measurement
• WAS pump station
• One(1)aerated sludge holding tank
• Gravity belt thickener
• Two(2)3-belt filter presses
• Stand-by power
This facility is located at Terrible Creek Wastewater Treatment Plant,5812 Hill Top Road,east of
Fuquay-Varina in Wake County.Terrible WWTP is currently rated a Class IV facility.
2. After receiving an Authorization to Construct from the Division for expansion and submission of
an engineer's certification,construct and operate a wastewater treatment facility with a design
capacity of 6.0 MGD.
3. Discharge from said treatment works at the location specified on the attached map into Terrible
Creek,which is classified C-NSW waters in the Neuse River Basin.
Page 2 of 14

Permit NC0066516
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (3.0 MGD)
[15A NCAC 02B .0400 et seq.,02B .0500 et seq.]
Grade IV Biological Water Pollution Control System [15A NCAC 08G .0302]
a. During the period beginning upon the effective date and lasting until expansion above 3.0 MGD or
expiration, the Permittee is authorized to discharge treated wastewater through Outfall 001.Such
discharges shall be limited and monitored' by the Permittee as specified below:
EFFLUENT DISCHARGE LIMITATIONS MONITORING REQUIREMENTS
CHARACTERISTICS
Parameter Code Monthly Weekly Daily Measurement Sample Sample Location2
Average Average Maximum Frequency Type
Flow 50050 3.0 MGD Continuous Recording Influent or Effluent
Total Monthly Flow(MG) 82220 Monitor and Report Monthly Recorded or Effluent
Calculated
BOD,5-day.20°C 5.0 mg/L 7.5 mg/L Daily Composite Influent&Effluent
(Summer)3,4 C0310
BOD,5-day,20°C 10.0 mg/L 15.0 mg/L Daily Composite Influent&Effluent
(Winter)34 C0310
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L Daily Composite Influent&Effluent
NH3 as N(Summer)4 C0610 1.0 mg/L 3.0 mg/L Daily Composite Effluent
NH3 as N(Winter)4 C0610 2.0 mg/L 6.0 mg/L Daily Composite Effluent
Dissolved Oxygen 00300 Daily average>5.0 mg/L Daily Grab Effluent
Fecal Coliform 31616 200/100mL 400/100mL Daily Grab Effluent
pH 00400 Between 6.0 and 9.0 s.u. Daily Grab Effluent
Temperature 00010 Monitor and Report Daily Grab Effluent
Conductivity 00094 Monitor and Report Daily Grab Effluent
Total Phosphorus5 C0665 2.0 mg/L(Quarterly Average)5 Weekly Composite Effluent
TKN(mg/L)6 00625 Monitor and Report Weekly Composite Effluent
NO2+ NO3(mg/L)6 00630 Monitor and Report Weekly Composite Effluent
TN(mg/L)6 C0660 Monitor and Report Weekly Composite Effluent
Monitor and Report(pounds/month) Monthly Calculated Effluent
Total Nitrogen Load7 QY600 68,489 pounds per year Annually Calculated Effluent
Total Copper 01042 15.7 pg/L 22.4 pg/L Monthly Composite Effluent
Total Zinc 01092 Monitor and Report Quarterly Composite Effluent
Chronic Toxicity8 TGP3B Monitor and Report Quarterly Composite Effluent
Temperature 00010 Monitor and Report Footnote 9 Grab U, D j
Conductivity 00094 Monitor and Report Footnote 9 Grab U, D I
Dissolved Oxygen 00300 Monitor and Report Footnote 9 Grab U, D
Fecal Coliform 31616 Monitor and Report Footnote 9 Grab U,D
Total Hardness[as CaCO3] Monitor and Report Quarterly Composite Effluent
(mg/L)16 00900
Effluent Pollutant Scan NC01 Monitor and Report Footnote 11 Footnote 11 Effluent
All footnotes are listed on the following page.
Page 3 of 14

Permit NC0066516
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application
system[see A.(9.)].
2. U:Upstream at least 100 feet from the outran. D:Downstream at NCSR 2751.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value(85%removal).
4. Summer is defined as the period from April 1 through October 31,while winter is defined as November 1 through
March 31.
5. The quarterly average for total phosphorus shall be the average of composite samples collected weekly during the
calendar quarter(January-March,April-June,July-September,October-December).
6. 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.
7. This is the mass quantity of Total Nitrogen discharged in a given period of time. See condition A.(3.). Compliance
with this limit shall be determined in accordance with Special Condition A.(4.)of this permit.
8. Chronic Toxicity(Ceriodaphnia)P/F at 90%with testing in March,June,September and December(see condition A.
(6.)).
9. Sample collected three times per week during June 1 through September 30 and once per week October 1 through
May 31.Monitoring for upstream and downstream are provisionally waived based upon membership in the Lower
Neuse River Basin Association(LNBA). If at anytime during the term of this permit,membership in the LNBA is
terminated,the Division shall be notified immediately,and in-stream monitoring shall immediately be conducted as
stipulated in this permit.
10. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals
(cadmium,copper,lead,nickel,silver,and zinc).
11. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit[see A.(7.)].
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 14

Permit NC0066516
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (6.0 MGD)
[15A NCAC 02B .0400 et seq.,02B .0500 et seq.]
Grade IV Biological Water Pollution Control System [15A NCAC 08G .0302]
a. During the period beginning upon expansion above 3.0 MGD and lasting until expiration,the
Permittee is authorized to discharge treated wastewater through outfall 001. Such discharges shall
be limited and monitored,by the Permittee.
EFFLUENT DISCHARGE LIMITATIONS MONITORING REQUIREMENTS
CHARACTERISTICS i
Parameter Code Monthly Weekly Daily Measurement Sample Sample Location2
Average Average Maximum Frequency Type
FIow13 50050 6.0 MGD Continuous Recording Influent or Effluent
Total Monthly Flow(MG) 82220 Monitor and Report Monthly Recorded or Effluent
Calculated
BOD,5-day,20°C 5.0 mg/L 7.5 mg/L Daily Composite Influent&Effluent
(Summer)3,4 C0310
BOD,5-day,20°C 10.0 mg/L 15.0 mg/L Daily Composite Influent&Effluent
(Winter)3.4 C0310
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L Daily Composite Influent&Effluent
NH3 as N(Summer)4 C0610 1.0 mg/L 3.0 mg/L Daily Composite Effluent
NH3 as N(Winter)4 C0610 2.0 mg/L 6.0 mg/L Daily Composite Effluent
Dissolved Oxygen 00300 Daily average>_5.0 mg/L Daily Grab Effluent
Fecal Coliform 31616 200/100mL 400/100mL Daily Grab Effluent
pH 00400 Between 6.0 and 9.0 s.u. Daily Grab Effluent
Temperature 00010 Monitor and Report Daily Grab Effluent
Conductivity 00094 Monitor and Report Daily Grab Effluent
Total Phosphorus5 C0665 2.0 mg/L(Quarterly Average)5 Weekly Composite Effluent
TKN(mg/L)6 00625 Monitor and Report Weekly Composite Effluent
NO2+NO3(mg/L)6 00630 Monitor and Report Weekly Composite Effluent
TN(mg/L)6 C0660 Monitor and Report Weekly Composite Effluent
Monitor and Report(pounds/month) Monthly Calculated Effluent
Total Nitrogen Load' QY600 68,489 pounds per year Annually Calculated Effluent
Total Copper 01042 15.7 pg/L 22.4 pg/L Monthly Composite Effluent
Total Zinc 01092 Monitor and Report Quarterly Composite Effluent
Chronic Toxicity8 TGP3B Monitor and Report Quarterly Composite Effluent
Temperature 00010 Monitor and Report Footnote 9 Grab U, D
Conductivity 00094 Monitor and Report Footnote 9 Grab U, D
Dissolved Oxygen 00300 Monitor and Report Footnote 9 Grab U, D
Fecal Coliform 31616 Monitor and Report Footnote 9 Grab U. D
Total Hardness[as CaCO3] Monitor and Re ort Quarterly Composite Effluent
(mg/L)10 00900 p
Effluent Pollutant Scan NC01 Monitor and Report Footnote 11 Footnote 11 Effluent
All footnotes are listed on the following page.
Page 5 of 14

Permit NC0066516
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application
system[see A.(9.)].
2. U:Upstream at least 100 feet from the outfall. D:Downstream at NCSR 2751.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the
respective influent value(85%removal).
4. Summer is defined as the period from April 1 through October 31,while winter is defined as November 1 through
March 31.
5. The quarterly average for total phosphorus shall be the average of composite samples collected weekly during the
calendar quarter(January-March,April-June,July-September,October-December).
6. 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.
7. This is the mass quantity of Total Nitrogen discharged in a given period of time. See condition A.(3.). Compliance
with this limit shall be determined in accordance with Special Condition A.(4.)of this permit.
8. Chronic Toxicity(Ceriodaphnia)P/F at 90%with testing in March,June,September and December(see condition A.
(6.)).
9. Sample collected three times per week during June 1 through September 30 and once per week October 1 through
May 31.Monitoring for upstream and downstream are provisionally waived based upon membership in the Lower
Neuse River Basin Association(LNBA). If at anytime during the term of this permit,membership in the LNBA is
terminated,the Division shall be notified immediately,and in-stream monitoring shall immediately be conducted as
stipulated in this permit.
10. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals
(cadmium,copper,lead,nickel,silver,and zinc).
11. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit[see A.(7.)].
12. In accordance with 15A NCAC 02H.0124,reliability measures for facilities with a design capacity equal to or greater
than 5 MGD,continuous operation,24 hours,seven days per week,are required to have at least one certified
operator on each shift,unless the applicant can show the requirement is unwarranted for a particular case.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (3.) 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 (Ib/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(1b/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 6 of 14

Permit NC0066516
A.(4.) 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 Programs
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.
f. 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 7 of 14

Permit NC0066516
A. (5.) TOTAL NITROGEN ALLOCATIONS [G.S.143-215.1(b)]
a. The following table lists the Total Nitrogen(TN)allocations 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.
Table 1. TN Allocations
ALLOCATION AMOUNT
ALLOCATION SOURCE DATE (Ib/yr)1 STATUS
TYPE
Estuary Discharge
Base Allocation Assigned by Rule 2 12/7/97;4/1/03 33,790 67,579 Active
Supplemental Connection of Southside MHP 253 506 Active
Allocation (NC0030724)
Supplemental Connection of Wake Technical 202 404 Active
Allocation C.C. (NC0025631)
TOTAL 34,244 68,489 Active
Footnotes:
1. Transport Factor=50%.Values are displayed to the nearest pound per year.
2. 15A NCAC 02B.0713(formerly 02B.0234)
b. Any addition,deletion,or modification of the listed allocations(other than typographical errors)or
any change to Active status of any reserve allocations 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. (6.) CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY) [15A NCAC 02B.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 90%.
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 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 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 on the Effluent Discharge
Monitoring Form(MR-1)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:
Page 8 of 14

Permit NC0066516
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,[e-mail].
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.
A.(7.) 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:2022,2023,and 2024. 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) CO610 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-ethyihexyl)phthalate CO100
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
Page 9 of 14

Permit NC0066516
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
1 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 organic 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
Reporting. Test results shall be reported electronically using the Division's eDMR system or on DWR
Form DMR-PPA-1(or on a form approved by the Director)by December 31st of each designated sampling
year. The Permittee must at least report completion of the test in the eDMR system by entering"1"or
"Y"for parameter code NC01 -Annual Pollutant Scan. If utilizing the DWR Form submit to the
following address:
NC DEQ/DWR/NPDES Files,1617 Mail Service Center,Raleigh,North Carolina 27699-1617.
Or the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES WW-EDMR-Supplemental-
Form
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 122.21(j)(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 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:
Page 10 of 14

Permit NC0066516
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: [e-mail].
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.
A. (8.) MERCURY MINIMIZATION PLAN [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 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://deq.nc.gov/about/divisions/water-
resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits,under NC 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 Mercury Minimization Plan 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.) 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.) Reporting
• Section D. (6.) Records Retention
• Section E.(5.) Monitoring Reports
1. Reporting Requirements[Supersedes Section D. (2.) and Section E.(5.) (a)l
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
Page 11 of 14

Permit NC0066516
monitoring data and submit DMRs electronically using the internet. The eDMR system may be
accessed at:https://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.
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;
• 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 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/2015/10122/2015-24954/national-pollutant
discharge-elimination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
Page 12 of 14

Permit NC0066516
3. 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://deq.nc.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 II,
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://deq.nc.gov/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 ACCEFI'LD:
"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.)1
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 13 of 14

Permit NC0066516
. - - 1:,..r?, syr....,__Iji. _.
046107 -41 lUk k6-6,-. (44-:"'1----, j/ -#1.1 AN
: ItilFrAr.--:'41'-'
,, -e. ,,.. —) `.' i \ .. .„_ i , ' 2 j iiiiidlir it2
_--,‘ `,...,„*„...::: I 1
\° ; 2-")-\'''\\- 1 li I i / ,:. A I ,I° \‘'': j*--- : tr .)'
N_P: i -
ii
- 1 .• " iiiik/:
'±' ff4'>-/'--z itt:' • ' tail le,
_ i o \ ' I)6!f'i•
j \ \ �:
-ram -� rr i-,. ,. �-- r lrii' _A.iw7lTh%.i'1''ii._..i.
/
,,,-)-Na ' 1 '7(-7----,- --\ ;
... !k•r- - /-; ' Mt 2 wi--. .----) vA).' i‘
,.4 ..t.
;'J
.� -..,l,.f c4.. - - -- ' -4 - 'i,F. 'i
_ ';'. ") 3'.n -li
.mac
cJy p 14 , A ` . J y— IJ
.,c_i i.i1(4
il
,/r-(-)-1 r!,'f
d/ 2) ' • _. - ) I: -_-4„. )\\ \ 7 -\)- lia,
dpkg
_J
10 1 /`m ; J a ;g �'4b. crc :. '': ' (-, -:,.,
1• 13so Jr}4 --qamww--(---‘4,10, •:, , ' (" • .
°4 yr � i 1.� r.41i ix (\ ) , ;
1--r 1 __It_.---t.4, _ riga- - 1111111T 0 \., /, , ,• . \ii ‘ .
-::::-.\--, ‘ x'Ili\i, _ IF/7:_-- .;,,,i‘. \ f(, _ _Ik.-3 it *V
1 9,,t.„ _._ „,,-,,...„„, _--•..,,, :r it..;„ , ,,,,, : ,..,,,. .:4.
. ,k ,,, ,i,,,, I_ 4- .. _.-___.,. .p,;,. _ .1 _11, crv,,„_._
'.-. tr. '14,,,k,, ..,,,,4.__,..\.,------Tv , 1 ..,. \ yt .. 4104,-,... --- ----L--- ' --fire- 41 • .II' 1'l'il•N " Ct.'...
150 , .r- .;it, ..,_• : ,•0:11644)04,45 5- ,,,,,,.. .., L, , i ,,, 1.1:r. .„0"7.-;._.-, . ..icipm—.▪ ( j*:" . . -1 lir(
H1A\\\:: Ij
pg_s41 :v. ii ‘-u_1(_ - -'•
i , --\ .,2. . h(
LL(/// �Z
ro })4titt . A- - ) i; ir " ,,- . A
Terrible Creek DTP Facility ;
Latitude: 35°36'49' Sub-Basin: 03-04-03 Location
Longitude: 78°43'44" 8-Digit HUC: 03020201
Quad g: E 24 SW-Angier
Stream Class: C-NSW North
11 Town of Fugay-Varina
Receiving Stream: Terrible Creek O r�•/1
(I I NCAp66516
Permitted Flow: 3.0 and 6.0 MGD 1 v Terrible creek wwry
Page 14 of 14