NC0074268_Draft Permit_20210511

ROY COOPER
1
Governor I 1 •'
`DIONNE DELLI-GATTI . .%
Secretary
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
May 11, 2021
Ms. Stephanie Sheringer
Division Manager Wastewater Treatment
City of Gastonia
P.O. Box 1748
Gastonia,North Carolina 28053
Subject: Draft NPDES Permit Renewal
Permit NC0074268
Crowders Creek WWTP
Gaston County
Grade IV Biological WPCS
SIC Code 4952
Dear Ms. Sheringer:
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:
• Per the results of instream waste concentration(IWC)-based calculations for ammonia-
nitrogen,winter ammonia nitrogen limits have been revised[See A.(1.)].
• Based on the reasonable potential analysis (RPA) showing reasonable potential to violate
state water quality standards, total cyanide limits have been added to the permit and the
quarterly monitoring requirement has been changed to monthly monitoring [See A.(1)].
• As the instream requirements have been moved to Section A.(1.)Effluent Limitations and
Monitoring Requirements, Special Condition A.(2.)Instream Sampling has been removed
from the permit.
• Based on DWR review of instream monitoring data, downstream monitoring at
Thompson Road has been removed from the permit. As downstream impact was observed, 1
conductivity monitoring has been added at Kendrick Road [See A.(1.)].
• Language has been added to Footnote 1 to account for influent, effluent, upstream and
downstream abbreviations [See A. (1.)].
• Some of the wording has changed in Special Condition A. (5.), Chronic Toxicity Permit
Limit,please review each paragraph carefully.
• Special Condition A. (6.) has been modified to include the specific three years in which
the Effluent Pollutant Scan shall be performed(2023,2024,and 2025). 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.
• We have coordinated with the State of South Carolina concerning effluent limits.
• Parameter codes have been added to the Effluent Limitations and Monitoring Requirements
[ See A. (1.)].
Q North
North CarolinaSalisbury DepartmentStreet of
16 Environmental17MailService Center Quality Division of Water
NorthCarolina Resou27rces
I Raleigh. 699 1617
+ � /� 9197079000

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 ispublishinga notice in a newspaper
having
circulation in the general Gaston 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 fmal permit. If you have questions concerning this
draft permit,please call me at(919) 707-3609 or by email at [e-mail].
Sincerely,
21A/`
Nick Coco,Engineer
NPDES Municipal Permitting Unit
Hardcopy: NPDES Files
Ecopy: US EPA Region 4
DWR/Mooresville Regional Office/Water Quality/Cory Basinger
DWR/Operator Certification Program/Maureen Kinney
DWR/Aquatic Toxicology Branch/Zach Thomas and Cindy Moore
DWR/Municipal Permitting Unit//Kristin Litzenberger
SCDHEC/DWQ/303(d), Modeling&TMDL Manager/Wade Cantrell
City of Gastonia/Assistant WWTD Manager-Compliance/David Shellenbarger
City of Gastonia/Pretreatment Coordinator/Cody Austin
Page 2 of 2

Permit NC0074268
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,the
City of Gastonia
is hereby authorized to discharge wastewater from a facility located at the
Crowders Creek Wastewater Treatment Plant
5642 South York Road
Gastonia
Gaston County
to receiving waters designated as Crowders Creek in the Catawba 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 September xx,2021.
This permit and authorization to discharge shall expire at midnight on August 31,2026.
Signed this day Month xx,2021.
DRAFT
for S. Daniel Smith,Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0074268
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 City of Gastonia
is hereby authorized to:
1. Continue to operate an existing 6.0 MGD wastewater treatment fa ' consisting of the following
components:
• Mechanical bar screen
• Grit removal
• Influent pump station
• Dual primary clarifiers
• Dual basins for biological nutrient removal
• Dual final clarifiers
• Two polishing/stabilization ponds
• Chlorine contact chamber(gas)
• SO2 dechlorination
• Static post aerator
• Dissolved air floatation(DAF)unit
• Four anaerobic digesters 4041040
• Gravity sludge thickener
• Filter belt press
• Alum and caustic addition
This facility is locate`.: e Crowders Creek WV1TP,5642 South York Road in Gastonia,Gaston
County. "d`
2. Dis ge from s. •tmen s . the location specified on the attached map via Outfall 001
a rowders Creek, .sified rs in the Catawba River Basin.
6.h
Page 2 of 14

Permit NC0074268
PART I
A.(1.) 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 on the effective date of the permit and lasting until permit
expiration,the permittee is authorized to discharge treated wastewater from Outfall 001. Such
discharges shall be limited and monitored1 by the permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER
Monthly Weekly Daily Measurement Sample Sample
Parameter Code Average Average Maximum Frequency Type Location2
Flow 50050 6.0 MGD Continuous Recording I or E
Total Monthly Flow 82220 Monitor and Report Monthly Recording or I or E
Calculated
BOD, 5 day,20°C3 C0310 13.0 mg/L 19.5 mg/L • 2/Week4 Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L 2/Week4 Composite I and E
NH3 as N C0610 2.0 mg/L 6.0 mg/L 2/Week4 Composite E
(April 1-October 31)
NH3 as N C0610 5.2 mg/L 15.6 mg/L 2/Week4 Composite E
(November 1-March 31)
Fecal Coliform 31616 200/100 mL 400/100 mL 2/Week4 Grab E
(geometric mean)
Dissolved Oxygen 00300 Daily Average>_ 6.0 mg/L Daily Grab E
pH 00400 Between 6.0 and 9.0 Standard Units Daily Grab E
Total Residual Chlorines 50060 28 pg/L Daily Grab E
Temperature,°C 00010 Monitor and Report Daily Grab E
TKN, mg/L6 00625 Monitor and Report Weekly Composite E
NO3-N +NO2-N (mg/L)6 00630 Monitor and Report Weekly Composite E
TN, mg/L6 C0600 Monitor and Report Weekly Composite E
QM600 Monitor&Report(Ib/mo) Monthly Calculated
TN Load7'6 Q5600 64,251 lb/summer Seasonally Calculated E
Q5600 90,672 lb/winter Seasonally Calculated
TP,mg/L6 C0665 Monitor and Report Weekly Composite E
TP Load'.s QM665 Monitor&Report(lb/mo) Monthly Calculated E
QM665_ 18,265 lb/yr Annually Calculated
Total Cyanide 00720 12.2 pg/L 48.0 pg/L Monthly Composite E
Total Hardness[as CaCO3], mg/L9 00900 Monitor and Report Quarterly Grab E
Chronic Toxicity10 TGP3B Monitor and Report Quarterly Composite E
Effluent Pollutant Scan" NC01 Monitor and Report Footnote 11 Footnote 11 E
Dissolved Oxygen (mg/L) 00300 Monitor and Report Variable2 Grab U and D
Temperature°C 00010 Monitor and Report Variable2 Grab U and D
Conductivity, pmhos/cm 00094 Monitor and Report Variable2 Grab U and D
Total Hardness[as CaCO3],mg/L12 00900 Monitor and Report Quarterly Grab U
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See Special
Condition A.(7.).
2. Sample locations I-Influent,E-Effluent,U-Upstream at Highway 1108(Crawford Road),D-Downstream at SCSR 564(Kendrick
Road). 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.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the respective influent
value(85%removal).
4. 2/Week sampling must occur on any two non-consecutive days during the calendar week.
Page 3 of 14

Permit NC0074268
(Footnotes continued on next page.)
Footnotes(continued):
5. The Division shall consider all effluent total residual chlorine 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 jig/L.
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 NOrN are Nitrate and Nitrite Nitrogen,respectively.TP is Total Phosphorus.See Condition A.(2)Total Nitrogen
and Total Phosphorus Limits.
7. TN or TP Load is the mass quantity of Total Nitrogen or Total Phosphorus discharged in a given period of time.See Special
Condition A.(3.),Calculation and Reporting of Total Nitrogen and Total Phosphorous Loads.
8. Summer is defined as April 1-October 31;winter is defined as November 1-March 31. • .Y .' on a calendar year basis,
January 1-December 31.
9. Effluent hardness sampling should be performed in conjunction with testing for har.• ..-ndent metals(cadmium,copper,
lead,nickel,silver,and zinc).
10. Chronic Toxicity(Ceriodaphnia dubia)P/F at 41%with testing in March,June, .. -mber.. - ember.See Special Condition
A.(5.).
11. The permittee shall perform three effluent pollution scans during the term of this petit.See S.• .ndition A.(6.).
12. The Permittee shall sample instream hardness,upstream of the facility's discharge.The sample sh.i .resentative of the
hardness in the receiving stream.
b. There shall be no discharge of floating solids or visible foam in other than trace . ounts.
Page 4 of 14

Permit NC0074268
A.(2.) TOTAL NITROGEN AND TOTAL PHOSPHORUS LIMITS
[G.S.143-215.1(b)]
(a.) Total Nitrogen(TN)allocations and load limits for NPDES dischargers in the Lake Wylie
watershed are seasonal(summer and winter)values.Summer is defined as April 1 through
October 31,and winter is defined as November 1 through March 31.Total Phosphorus (TP)
allocations and load limits are annual values and apply on a calendar year basis,January 1
through December 31.
(b.) The TN (or TP)Load limit in this Permit may be modified as the result giallowable changes in
the Permittee's allocation. ,. -
(i.) Allowable changes include those transfers resulting from the purchase,sale,trade,or lease
of allocation between the Permittee and other dischargers assigned allocation under the
1995 Lake Wylie TMDL;regionalization(if both facilities were assigned allocation); and
other transactions approved by the Division. N.
(ii.) The Permittee may request a modification of the TN(or TP)Load lim is Permit to
reflect allowable changes in its allocation.
(A) The request must include an analysiemonstrating that change in tions and
limits does not have a reasonable potential to cause localized water ality impacts.
(B) Upon receipt of timely and proper application,the Division will propose to modify the 1
permit as appropriate and in accordance with state and federal program requirements.
(C) Changes in TN or TP limits become effective on the first January 1 (annual limit),the
first April 1 (summer limit),or the first November 1'(winter limit)following permit
modification.The Division must reive application r "later than 180 days prior to the
requested effective date for any limit hange.
(iii.) Any requests fo tion should sent to:
NCDEQ/ DWR/ NPDES P rams
1617 Mail Service Center
Raleigh,NC 27699-1617
A.(3.) LCULATION AND REPORTING OF TOTAL NITROGEN AND TOTAL PHOSPHORUS
OADS
.143-215.1(b)] '
a. The ittee shall calculate monthly,seasonal,and annual TN (or TP) Loads as follows:
i. Monthly TN TP)Load(lb/mo)=TN(or TP) x TMF x 8.34
wher
TN or TP the average Total Nitrogen or Total Phosphorus
concentration(mg/L)of the composite samples collected
during the month
TMF the Total Monthly Flow of wastewater discharged during the
month(MG/mo);that is,the sum of daily flows in the month
8.34 conversion factor,from(mg/L x MG)to pounds
ii. Summer TN Load(lb/summer)=Sum of the April-October Monthly TN Loads for the
season
Page 5 of 14

Permit NC0074268
iii. Winter TN Load (lb/winter)=Sum of the November- March Monthly TN Loads for the
season
iv. Annual TP Load (lb/yr) =Sum of the 12 Monthly TP Loads for the calendar year
b. The Permittee shall report monthly Total Nitrogen and Total Phosphorus results(mg/L and
lb/mo) in the appropriate discharge monitoring report for each month: the summer TN results
with the October DMR; the winter TN results with the March DMR; and each calendar year's
results with the December report for that year.
c. Any addition,deletion,or modification of the listed allocation(s) (other than to correct
typographical errors) or any change in status of any of the listed 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.(4.) NUTRIENT ALLOCATIONS
[G.S. 143-215.1(B)]
a. The followingtable list the Total Nitrogen(TN)and Total Phosphorus(TP) allocations assigned
( ) g p gn
to,acquired by,or transferred to the Permittee in accordance with the 1995 Lake Wylie TMDL
and nutrient management strategy and the status of each as of permit issuance.For compliance
purposes,this table does not supersede any TN or TP limit established elsewhere in this permit.
Total Nitrogen Allocation
ALLOCATION DISCHARGE DISCHARGE
TYPE SOURCE DATE ALLOCATION ALLOCATION STATUS
SUMMER' WINTER1
Base TMDL 1995 64,251 lb/season 90,672 lb/yr Active
Connection of
Supplemental Bessemer City, 2015 16,063 lb/season 22,668 lb/yr Reserve
NC0020826
Total Allocation 80,314 lb/season 113,341 lb/yr Mixed
Footnotes:
1. Summer is defined as April 1 -October 31. Winter is defined as November 1 -March 31.
Total Phosphorus Allocation
ALLOCATION DISCHARGE
TYPE SOURCE DATE ALLOCATION STATUS
ANNUAL'
Base TMDL 1995 18,265 lb/yr Active
Connection of
Supplemental Bessemer City, 2015 4,566 lb/yr Reserve
NC0020826
Total Allocation 22,831 lb/yr Active
Footnotes:
1. Annual means on a calendar year basis,January 1 -December 31.
(b.) Any addition, deletion,or modification of the listed allocation(s) (other than to correct
typographical errors) or any change in status of any of the listed 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.
Page 6 of 14

Permit NC0074268
A.(5.) 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 41%.
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 st mol,. of each three-month
toxicity testing quarter assigned to the facility.Effluent sampling this to s ust be obtained
during representative effluent discharge and shall be perform t NPDE `' s itted final effluent
discharge below all treatment processes.
If the test procedure performed as the first test of any single qu results in a failure or ChV
below the permit limit,then multiple-concentration testing shall b erformed at a minimum, in
each of the two following months as described in"North Carolina 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 month tn which tests were performed,,sing the parameter code
TGP3B for the pass/fail results and THP3Bor the ionic 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/ atic Toxicology Branch
1621 Mail Service Center
'aleigh,NC _ .99-1621
Or,results can be sent to . s .. - ms.ATBC denr.1 ov.
g
Completed Aquatic Toxicity orms s`all be filed with the Water Sciences Section no later than 30
days aftetAlie-end of t repo •k •riod for which the report is made.
Test datfrhall be complete,accura, •e all supporting chemical/physical measurements and all
conventration/response da." and be • ied by laboratory supervisor and ORC or approved
d gnate signature. Total 'dual i orine of the effluent toxicity sample must be measured and
reported if chlorine is empl. •d for disinfection of the waste stream.
Should there be no dischar: of flow from the facility during a month in which toxicity monitoring is
required,the •` 'ttee w. omplete the information located at the top of the aquatic toxicity(AT)test
form indicating ; name,permit number,pipe number,county,and the month/year of the
report with the nor, . of"No How"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.
Page 7 of 14

Permit NC0074268
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.
lop
Page 8 of 14

Permit NC0074268
A.(6.) EFFLUENT POLLUTANT SCAN (Municipal POTWs)
[G.S.143-215.1(b)]
a. 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: 2023,2024,and 2025.
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 ev• ear]. Unless
otherwise indicated,metals shall be analyzed as"total recoverable."
Ammonia(as N) C0610 Trans-1,2-dichloroethylene 34546 -chloroethyl)ether 34273
Chlorine(total residual,TRC) 50060 1,1-dichloroethylene 34501 . .roisopropyl)ether 34283
Dissolved oxygen 00300 1,2-dichloropropane Co• Bis exyl)phthalate CO100
Nitrate/Nitrite 00630 1,3-dichloropropylene '63 4-bro. . phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene .4 Butyl.• . .to 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaph ', 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl p'. - 34641
Total dissolved solids 70295 Methylene chlorid: 34423 « sene 34320
Hardness 00900 1,1,2,2-tetrachloroethane ,1549 I -butyl phthala,• 39110
Antimony 01097 ,Tetrachloroethylene Di-n-octyl phthalate 345%
Arsenic 01002 Toluene • Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34 I: 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-ti t. loroethane 34511 - orobenzene 34566
Chromium C0034 Trichloapethylene 39180 •ichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 ,3-dichlorobenzidine 34631
Lead 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 2-chlorophenal,, 34586 2,4-dinitrotoluene 34611
Selenium 011 2,4-dichloroph 1 34601 2,6-dinitrotoluene C0626
Silver 01077 2,4-dimethylphe 34606 1,2-diphenylhydrazine 34346
Thallium 01059 4,6-dinitro-o-cresa`l` ' 34657 Fluoranthene C0376
Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381
Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700
Total phen• •- ••unds 4-nitrophenol 34646 Hexachlorobutadiene C0702
Volati .s: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386
A. , 34210 34694 Hexachloroethane 343%
lonitrile 34215 trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
e c,tt I se-neutral compounds: Isophorone 34408
• orm 104 Acenaphthene 34205 Naphthalene 346%
Car, .achloride 102 Acenaphthylene 34200 Nitrobenzene 34447
Chloro. •e .,301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodib ethane • 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane - 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vin 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
b. 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.
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Permit NC0074268
c. 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
d. Additional Toxicity Testing Requirements for Municipal Permi •newal. Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan . ements listed above are
also subject to additional toxicity testing requirements specified in - Regulation 40 CFR
122.21(j)(5). The US EPA requires four(4)toxicity tests for a test org. er than the test
species currently required in this permit. The multiple species tests shou . onducted either
quarterly for a 12-month period prior to submittal of the permit renewal app. ion,of four tests
performed at least annually in the four and one half year perio%prior to the application. These
tests shall be performed for acute or chronic toxicity,whichever istpecified in this permit. The
multiple species toxicity test results shall be filed with the Aquatic toxicology Branch at the
following address:
North Carolina Div' 'a n of Water Resourc
Water Sciences Secti. /Aquatic Toxicology
1621 Mail Service Cen. '4
Raleigh,North Caro ' . 7699
Or,results can be sent to the email,ATFo ..ATB@nc•
Contact the Division's Aquatic Toxicology anch at 919-743-8401 for guidance on conducting
the additional toxicity tests and reporting requirements. Results should also be summarized in
Part E(Toxiety Testing Data) of EPA Municipal Application Form 2A,when submitting the
permit renewal application to the NPDES Permitting Unit.
Page 10 of 14

Permit NC0074268
A.(7.) MERCURY MINIMIZATION PLAN (MMP)
[G.S.143-215.1(b)]
The Permittee shall continue implementing the mercury minimization plan during this permit term.
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.(8.) 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)]
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. 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.
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Permit NC0074268
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).
4#01.4448
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9),the permittee must iden ' e initial recipient at the time
of each electronic submission. The permittee should use the EP bsite resouites 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 tc0Implement the NPDES pro ram 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.fed ralregister.gov/docume►'=>./2015/10/22/2015-24954/national-pollutant-
discharge-elimina system-npdes-electronic .. •�ng-rule
Electronic submissions must start by the dates l' d in the"Reporting Requirements"section
above.
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 perittee 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:
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Permit NC0074268
http://deq.nc.gov/about/divisions/water-resources/edinr
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-resourc dmr
Certification. Any person submitting an electronic D sing the state's eDMR system shall make
the following certification[40 CFR 122.22]. NO OTHER ATEMENTS OF CERTIFICATION WILL
BE ACCEPTED:
"1 certify,under penalty of law, that this do went and all attachments were Apared under my direction or
supervision in accordance with a system designed to assure tt qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of t person or persons who manage the system,or
those persons directly responsible for gathering tile information, the information submitted is, to the best of
my knowledge and belief accurate,and complete. I am away that there are significant penalties for
submitting false inform, .n, including the possibilk 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 NC0074268
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Crowders Creek WWTP — NC0074268 A Facility
Location •
USGS Quad Name:Gastonia South Lat.: 35°10'10"
Receiving Stream:Crowders Creek Long.: 81°11'48" -►-
Stream Class: C
Subbasin: Catawba 03-08-37 HUC: 03050101 North I City of Gastonia
Page 14 of 14