NC0020184_Permit Issuance_20170315

Water Resources
ENVIRONMENTAL QUALITY
March 15, 2017
Ms. Stephanie Scheringer, Division Manager, Wastewater Treatment
Two Rivers Utilities
P.O. Box 1748
Gastonia, North Carolina 28053
Dear Ms. Scheringer:
ROY COOPER
Gom nor
MICHAEL S. REGAN
Seartn,Y
S. JAY ZIMMERMAN
Director
Subject: Final NPDES Permit Renewal
Permit NCO020184
Long Creek WWTP
Gaston County
Class PJ Facility
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007
(or as subsequently amended).
In response to your comments on the draft permit the permit was modified as follows:
• The facility address was corrected.
• The coarse bar screen was deleted form the WWTP components in the Supplement to
Pemrit Cover Sheet.
• The Total Nitrogen effluent limit and monitoring requirement of 6 mg/1 listed in the draft
permit was deleted. At the time when the permit was drafted the Division included
effective days and expiration dates for the existing and proposed limits expecting that the
permit would have been issued during 2016. The TN limit of 6 mg/l would have been
applicable until April 1, 2017 but only during the summer season. Due to delays in
issuing the permit this limit is no longer applicable since the effective day of the permit is
April 1, 2017.
• Monitoring frequency for TSS, ammonia, and fecal coliform was reduced to 2/week
according to the Guidance Regarding the Reduction in Monitoring Frequency.
• Standard conditions are the same as the previous permit.
This final permit contains the following changes from your previous permit:
• Mass limits for total nitrogen and total phosphorus were added to the permit. allocation
and limits for the Long Creek WWTP and the Eagle Road WWTP were combined in a
bubble limit. The summer TN limits were calculated based on the 6 mg/1 concentration
Stateof North Cinchna I EnvimrtNe=I(a,,Ihy I Water Resources
1617 Mail Service Center I Raleigh. North Camlim 27699-1617
919 807 6300

limit established by the Lake Wylie TMDL. The winter TN limits were calculated based
on 12 mg/l. The annual TP limit was calculated based on 1 mg/1 limit in the TMDL.
• As a result of a reasonable potential analysis the limits for nickel and monitoring for
chloroform were removed from the permit.
• Given the current industrial users and the minimal flow from color bearing wastewaters
the Division agrees to removing color from the monitoring requirements.
• Sampling frequency for the effluent pollutant scan was modified to three times during the
permit cycle. See Special Condition A. (8). This condition was also modified to add
narrative for four seasonal 2nd species toxicity tests.
• Effluent hardness and instream hardness sampling, upstream of the discharge, has been
added to this permit at a monitoring frequency of quarterly.. See Section A.(1.) Effluent
Limitations and Monitoring Requirements and A.(3) Instream Sampling.
• A mercury evaluation was conducted in accordance with the Permitting Guidance
developed for the implementation of the statewide Mercury TMDL to determine the need
for a limit and/or a Mercury Minimization Plan (MMP). No limit is required but you will
be required to develop a MMP. See Special Condition A. (10).
• 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. The requirement to begin reporting
discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application has been added to your final NPDES
permit. See Special Condition A (9).
For information on eDMR, registering for eDMR and obtaining an eDMR user account,
please visit the following web page: http://deq.nc.gov/abouVdivisions/water-
resources/edmr.
For more information on EPA's final NPDES Electronic Reporting Rule, please visit the
following web site:
http://www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-system-
npdes-electronic-reporting-rule.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within
thirty (30) days following receipt of this letter. This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-
6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or any other Federal, State, or Local governmental permits that may be required.
2

If you have any questions concerning this permit, please contact Teresa Rodriguez at telephone
number [phone] or at email [e-mail].
Sincerely,
. ay Zimm , .G.
irector, Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
DWR/Mooresville Regional Office / Water Quality
Ecopy: US EPA Region 4
DWR/Ecosystems Branch/Carrie Ruhlman
DWR/Aquatic Toxicology Branch/Susan Meadows

Permit NCO020184
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,
City of Gastonia
is hereby authorized to discharge wastewater from a facility located at the
Long Creek Wastewater Treatment Plant
3000 Old Spencer Mountain Road
Dallas
Gaston County
to receiving waters designated as the South Fork Catawba River in the Catawba 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...........................................................................................................April 1, 2017
This permit and authorization to discharge shall expire at midnight on ................................... January 31, 2020.
Signed this day ..........................March 15, 2017.
i--- VV S. J immermant
D' 'ion of Water' Resources
By Authority of the Environmental Management Commission
Page 1 of 12

Permit NCO020184
R
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 16.0 MGD wastewater treatment facility that includes the following
components:
• Mechanical bar screens
• Mechanical draft tube mixers
• Grit removal
• Parshall flume
• Influent pump station
• Splitter box
• Primary clarifiers
• Raw sludge pumping station
• Dual basins for biological nutrient removal
• Denitrification basin
• Final clarifiers
• Tertiary filtration
• Backwash holding tank
• Chlorine contact basin
• Chlorination/ dechlorination facilities
• Static aerators
• Dissolved air floatation (DAF) unit
• Six anaerobic digesters
• Solids contact reactor
• Chemical feed facilities
• Stand by power generator
This wastewater treatment facility is located on Long Creek Disposal Road at the Long Creek
Wastewater Treatment Plant at 3000 Spencer Mountain Road, Dallas, in Gaston County.
2. Discharge wastewater from said treatment works at the location specified on the attached map into the
South Fork Catawba River, classified Class WS-V waters in the Catawba River Basin.
Page 2 of 12

Permit NCO020184
PART I - MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED DISCHARGES
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B
.0400 et seq., 02B .0500 et seq.]
(a.) During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored'
by the Permittee as specified below:
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EFF'UENT;
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ie
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Flow
16.0 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow
Monitor and Report
Monthly
Recorded or
Influent or Effluent
Calculated
BOD, 5-day, 20°C 2
(April i-October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
Influent &Effluent
130% 5-day, 20°C 2
(November 1— March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
Influent & Effluent
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
2/Week
Composite
Influent & Effluent
NH3 as N
(April 1- October 31)
2.0 mg/L
g
6.0 mg/L
g
2
2/Week
Composite
Effluent
NH3 as N
(November 1—March 31)
4.0 mg/L
12.0 mg/L
2/Week
Composite
Effluent
Dissolved Oxygen
Daily average —> 6.0 mg/L
Daily
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100 mL
400/100 mL
2/Week
Grab
Effluent
Temperature
Daily
Grab
Effluent
Hardness, Total as
ECaCO3 or (Ca + Mg)]
Quarterly
Composite
Effluent
mg/L
pH
>— 6.0 and 5 9.0 standard units
Daily
Grab
Effluent
Total Residual Chlorine 3
28 Ng/L
Daily
Grab
Effluent
TKN 4
Monitor and Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N 4
Monitor and Report (mg/L)
Weekly
Composite
Effluent
TN 4
Monitor and Report (mg/L)
Weekly
Composite
Effluent
TN Load 5,6>>
Monitor and Report (lb/mo)
Monitor and Report (lb/season) (effective
Monthly
Calculated
Effluent
4/1/17)
Seasonally
Calculated
Tp 4
Monitor and Report (mg/L)
Weekly
Composite
Effluent
Tp 4
1 mg/L (monthly average)
(effective through 12/31/17)
Weekly
Composite
Effluent
Tp Load 5,6,7
Monitor and Report (lb/mo)
Monitor and Report (lb/yr) (effective
Monthly
Calculated
Effluent
1/1/18)
Annually
Calculated
Chronic Toxicity s
F
Quarterly
Composite
Effluent
Effluent Pollutant Scan 9
Monitor and Report
Footnote 9
Footnote 9
Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using NC DWWs eDMR application
system. See Special Condition A.(9).
2. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
Page 3 of 12

Permit NCO020184
3. Facility shall report all effluent TRC values reported by a NC certified laboratory including field certified.
However, effluent values below 50 µg /L will be treated as zero for compliance purposes. Compliance with the
limit for Total Residual Chlorine shall be based upon a daily average value.
4. For a given wastewater sample, TN = TKN + NOrN + NO2-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NOrN and NO2-N are Nitrate and Nitrite Nitrogen, respectively. TP is Total
Phosphorus.
5. TN or TP Load is the mass quantity of Total Nitrogen or Total Phosphorus discharged in a given period of
time. See Special Conditions A.(4.) Total Nitrogen and Total Phosphorus Limits and A.(5.) Calculation of Total
Nitrogen and Total Phosphorus Loads.
6. Summer is defined as April 1- October 31; winter is defined as November 1- March 31. Annual means on a
calendar year basis, January 1- December 31.
7. The facility is subject to nutrient limitations as specified in Special Condition A.(2.) Combined Limitations for Nutrients -
Outfall COL
8. Chronic Toxicity (Ceriodaphnia), P/F at 19% with testing in March, June, September and December. See
Special Condition A.(7.).
9. See Special Condition A.(8.), Effluent Pollutant Scan.
(b.) There shall be no discharge of floating solids or visible foam in other than trace amounts.
A.(2.) COMBINED LIMITATIONS FOR NUTRIENTS - Outfall C01 [G.S.143-215.1(b)]
(a.) During the period beginning on the effective date of this permit or as specified below and lasting until
permit expiration, the Permittee is further authorized to discharge Total Nitrogen and Total
Phosphorus from the Long Creek WWTP (NC0020184, Outfall 001) and the Eagle Road WWTP
(NC0006033, Outfall 001) subject to the following combined load limitations:
Permit
Facility
Total Nitrogen.'
Summer
(lb/season) 1
Total Nitrogen
Winter
(lb/season) 1,3
Total Phosphorus
Annual
(ib/yr) V. .
NCO020184
Long Creek WWTP
171,337
241,793
48,706
NCO006033
Eagle.Road WWTP
42,834
60,448
12,176
Combined Load Limitations
214,171
302,242
60,882
Footnotes:
1. In accordance with the 1995 Lake Wylie TMDL, summer values apply April 1- October 31 and winter
values apply November 1- March 31.
2. Total Phosphorus values applies for the calendar year; January 1 to December 31.
3. All values are displayed to the nearest pound. The Combined Load Limitations may not equal the
apparent sum due to the effects of rounding the individual values.
(b.) Compliance with these limits shall be determined in accordance with Special Conditions A.(4.), Limits
for Total Nitrogen and Total Phosphorus, and A.(5.), Calculation and Reporting of Nutrient Loads.
(c.) Nutrient monitoring and reporting requirements are specified in Special Conditions A.(1.), Effluent
Limitations and Monitoring Requirements, and A.(5.), Calculation and Reporting of Nutrient Loads.
(d.) Pursuant to N.C. General Statute Section 143-215.1 and Part II, Sections B-12 and B-13 of this permit,
the Division of Water Resources (Division) may reopen the permits listed above and establish more
stringent nutrient limits upon finding that such limits are necessary to prevent the discharges from
causing localized water quality impacts in the receiving streams.
(e.) The Permittee may request that its permits be modified to rescind these combined limits and establish
individual mass discharge limits for each facility. The Division may, after written notification to the
Permittee, rescind these combined limits and establish individual mass discharge limits for each
Page 4 of 12

Permit NCO020184
facility.
A.(3.) INSTREAM SAMPLING [15A NCAC 02B .0500 et seq.]
Instream monitoring is required for the following parameters at the locations specified:
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Pkfr lip 1 �
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y, a r ,tya�e�� r •,n
.Fen�►.s r
c ; l3 ar_.,-, ,� r c '4'¢
Sanpte:rT'ype :
rx � . �
Locabon1 y
Dissolved Oxygen
Footnote 2
Grab
U, Dl, D2
Temperature
Footnote 2
Grab
U, Di, D2
Conductivity
Footnote 2
Grab
U, Di
Hardness
Quarterly
Grab
U
Footnotes:
1. U: upstream at Highway 275 or 200 feet above the outfall. D1: downstream at Spencer Mountain Pool at
dam, D2:1.56 miles below at USGS site.
2. Instream samples shall be grab samples taken 3/week Qune-September) and 1/week (October -May).
A.(4.) 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 of allowable 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.
(ii.) The Permittee may request a modification of the TN (or TP) Load limit in this Permit to reflect
allowable changes in its allocation.
(A) The request must include an analysis demonstrating that change in allocations and limits
does not have a reasonable potential to cause localized water quality impacts.
(B) Upon receipt of timely and proper application, the Division will propose to modify the
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 receive application no later than 180 days prior to the
requested effective date for any limit change.
(iii.) Any requests for modification should be sent to:
NCDEQ/ DWR/ NPDES Programs
1617 Mail Service Center
Raleigh, NC 27699-1617
CALCULATION AND REPORTING OF TOTAL NITROGEN AND TOTAL
PHOSPHORUS LOADS [G.S.143-215.1(b)]
(a.) The Permittee shall calculate monthly, seasonal, and annual TN (or TP) Loads as follows:
Page 5 of 12

Permit NCO020184
(i.) Monthly TN (or TP) Load (lb/mo) = TN (or TP) x TMF x 8.34
where:
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
(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.) In the case of combined nutrient limits (see Special Condition A.(2.)):
(i.) The Permittee shall report each facility's monthly TN and TP effluent loads in the discharge
monitoring report for that facility.
(ii.) The Permittee shall report the seasonal or annual combined loads in the discharge monitoring
reports for the Long Creek WWTP.
(d.) 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.(6.) NUTRIENT ALLOCATIONS [G.S.143-215.1(B)]
(a.) The following table list the Total Nitrogen (TN) and Total Phosphorus (TP) allocations assigned 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
y.Y .�.•'�:-��-���.!.�.:. ,..., .. -. ;..... •.�'•.....-
_� 1 k-
1^ ._"R... c.'a" 1
� �1vjl+��wi-`!//.-��.��-++•y��!
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it
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_
ME
Base
TMDL
1995
171,337lb/season
241,793lb/yr
Active
Total Allocation
171,337 lb/season
241,793 lb/yr
Active
Footnotes:
1. Summer is defined as Apri11- October 31. Winter is defined as November 1- March 31.
Total Phosphorus Allocation
ocnroN
AluE
_
- PisciARG
souRc
o
.o:
r�►Tus
- .
_
_
�11iiNUA1i -
_
Base
TMDL
1995
48,7061b/yr
Active
Total Allocation
48,706 ib/yr
Active
Page 6 of 12

Permit NCO020184
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.
A.(7.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT [15A NCAC 02B .0500 et seq.]
The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions.
The effluent concentration defined as treatment two in the procedure document is 19 %. The testing shall be
performed as a Ceriodaphnia dubia 7-day pass/fail test. 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.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP313.
Additionally, DWR Form AT-1(original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, NC 27699-1623
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 and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. 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 permitteee 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, then monthly
monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will
revert to quarterly in the months specified above.
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 7 of 12

Permit NCO020184
A.(8.) EFFLUENT POLLUTANT SCAN [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: 2017, 2018, and 2019. 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)
Trans-1,2-dichloroethylene
Bis (2-chloroethyl) ether
Chlorine (total residual, TRC)
1,1-dichloroethylene
Bis (2-chloroisopropyl) ether
Dissolved oxygen
1,2-dichloropropane
Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite
1,3-dichloropropylene
4-bromophenyl phenyl ether
K3eldahl nitrogen
Ethylbenzene
Butyl benzyl phthalate
Oil and grease
Methyl bromide
2-chloronaphthalene
Phosphorus
Methyl chloride
4-chlorophenyl phenyl ether
Total dissolved solids
Methylene chloride
Chrysene
Hardness
1,1,2,2-tetrachloroethane
Di-n-butyl phthalate
Antimony
Tetrachloroethylene
Di-n-odyl phthalate -
Arsenic
Toluene
Dibenzo(a,h)anthracene
Beryllium
1,1,1-trichloroethane
1,2-dichlorobenzene
Cadmium
1,1,2-trichloroethane
1,3-dichlorobenzene
Chromium
Trichloroethylene
1,4-dichlorobenzene
Copper
Vinyl chloride
3,3-dichlorobenzidine
Lead
Acid -extractable avmoounds:
Diethyl phthalate
Mercury (EPA Method 1631E)
P-chloro-m-cresol
Dimethyl phthalate
Nickel
2-chlorophenol
2,4-dinitrotoluene
Selenium
2,4-dichlorophenol
2,6-dinitrotoluene
Silver
2,4-dimethylphenol
112-dipheny1hydrazine
Thallium
4,6-dinbo-o-cresol
Fluoranthene
Zinc
2,4-dinitrophenol
Fluorene
Cyanide
2-nitrophenol
Hexachlorobenzene
Total phenolic compounds
4-nitrophenol
Hexachlorobutadlene
Volatile onvanic
Pentachlorophenol
Hexachlorocydo-pentadiene
Acroleln
Phenol
Hexachloroethane
Acrylonitrile
2,4,6-trichlorophenol
Indeno(1,2,3-cd)pyrene
Benzene
�BAse-nerhdral rnmrvounds:
Isophorone
Bromoform
Acenaphthene
Naphthalene
Carbon tetrachloride
Acenaphthylene
Nitrobenzene
Chlorobenzene
Anthracene
N-nitrowdi-n-propylamine
Chlorodibromomethane
Benzidine
N-nitrosodimethylamine
Chloroethane
Benzo(a)anthracene
N-nitrosodiphenylamine
2-chloroethylvinyl ether
Benzo(a)pyrene
Phenanthrene
Chloroform
3,4 benzofluoranthene
Pyrene
Dichlorobromomethane
Benzo(ghi)perylene
1,2,4-trichlorobenzene
1,1-dichloroethane
Benzo(k)fluoranthene
1,2-dichloroethane
Bis (2-chloroethoxy) methane
(b.) Reporting. Test results shall be reported on DWR Form -A MR PPA1(or in a form approved by the
Director) by December 31st of each designated sampling year. The report shall be submitted to the
following address: NC DEQ/ DWR/ Central Files,1617 Mail
Service Center, Raleigh, North
Carolina 27699-1617.
(c.) Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also
subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.210)(5).
The US EPA requires four (4) toxicity tests for a test organism other than the test species currently
required in this permit. The multiple species tests should be conducted either quarterly for a 12-
month period prior to submittal of the permit renewal application, or four tests performed at least
annually in the four and one half year period prior to the application. These tests shall be performed
Page 8 of 12

Permit NCO020184
for acute or chronic toxicity, whichever is specified in this permit. The multiple species toxicity test
results shall be filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
(d.) 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.(9.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S.143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports and specify that, if a state does not establish a system to receive such submittals, then permittees
must submit monitoring data and reports electronically to the Environmental Protection Agency (EPA). 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. RegoE ft Requirements tSupersedes 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 Until such time that the state's eDMR
application is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR),
permittees will be required to submit all discharge monitoring data to the state electronically using
eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one
signed original and a copy of the computer printed eDMR to the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband access,
then a temporary waiver from the NPDES electronic reporting requirements may be granted and
discharge monitoring data may be submitted on paper DMR forms (MR 1,1.1, 2, 3) or alternative forms
approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. See
"How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Page 9 of 12

Permit NCO020184 , ,
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/ Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver
from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.410)(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: http://www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-
system-npdes-electronic-reporting-rule.
Electronic submissions must start by the dates listed 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 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 permitbees 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 fSupplements 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
ACCEPTED:
Page 10 of 12

Permit NCO020184
"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. -(6.11
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
This period may be extended by request of the Director at any time [40 CFR 122.41].
A.(10.) MERCURY MINIMIZATION PLAN [G.S.143-215.1(b)]
The permittee shall develop and implement a mercury minimization plan during this permit term. The
M W shall be developed within 180 days of the NPDES Permit Effective Date, and shall be available for
inspection on -site. A sample MNT was developed through a stakeholder review process and has been
placed on the Division website for guidance (http:l/vortal.ncdenr.org/web/wg/swvZRsZnpdes, under
Model Mercury Minimization Plan). The MMP should place emphasis on identification of mercury
contributors and goals for reduction. Results shall be summarized and submitted with the next permit
renewal. Performance of the 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.
Page 11 of 12

Permit NC0020181 .
I i
kit
j/
Ing
6,4
f�
SI. . .. � '..
Outfa11001 �� _v "' i/ �; ell
i' 2` w
I� ��
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O
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w •1 yh
Long Creek WVVTP — NCO020184 Facility Location (not to scale)
City of Gastonia - Gaston County
Receiving Stream: South Fork Catawba River N - - z
Sub -Basin: 03-08-36 -
Stream Class: WS-V
State Grid/USGS Quad: F14SE/Mount Holly Latitude 35' 18' 37" Longitude 81° 06' 50"
Page 12 of 12

DEPARTEMENT OF ENVIRONMENTAL QUALITY/DIVISION OF WATER RESOURCES
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO020184
Facility Information
Applicant/Facility Name:
City of Gastonia/Long Creek WWTP
Applicant Address:
PO Box 1748, Gastonia, NC 28053
Facility Address:
3000 Long
Creek Disposal Plant Road, Dallas, NC 28034
Permitted Flow:
16 MGD
Type of Waste:
Domestic/Industrial
Classification:
IV
Permit Status:
Renewal
County:
Gaston
Miscellaneous
Receiving Stream:
South Fork Catawba River
Sub basin:
03-08-36
Stream Classification:
WS-V
HUC:
03050102
303 d Listed?
No
State Grid:
F 14SE
Drainage Area (mi2):
558
USGS Quad:
Mount Holly
Summer 7Q10 (cfs)
109
Latitude:
350 18' 37"
Winter 7Q 10 (cfs)
200
Longitude:
81 ° 06 `50"
Average Flow (cfs):
653
Regional Office:
Mooresville
30 2 (cfs):
272
Permit Writer:
Teresa Rodriguez
IWC % :
19
Date:
1/18/2017
I. SUMMARY
The Long Creek WWTP is owned by the City of Gastonia and operated and maintained by Two Rivers
Utilities. Gastonia submitted an application for renewal on August 14, 2014. The permit expired on
January 31, 2015. The 16.0 MGD treatment system consists of. bar screen, primary clarifiers, anaerobic,
anoxic and oxic basins, denitrification basin, final clarifiers, gravity filters, chlorination, dechlorination
and post aeration.
Gastonia's Long Creek WWTP has a full pretreatment program through the Division's PERCS Unit. The
Long Creek WWTP receives wastewaters from four categorical industrial users and 12 non -categorical
industrial users and four municipalities (Ranlo, Lowell, Dallas, and High Shoals). The pretreatment
program will continue to be implemented in accordance with the permit.
Gastonia requested the following modifications to the permit:
1. Limits for Total Nitrogen and Total Phosphorus for both the Long Creek (NC0020184) and
Eagle Road (NC0006033) facilities be expressed as a bubble limits in pounds per day.
2. Reduction in monitoring frequency for BOD, TSS, ammonia and fecal coliform.
3. Reduce instream monitoring to monthly year around.
4. Eliminate monitoring and limits for nickel.
5. Add allocations from the following decommissioned facilities: Ranlo, High Shoals, McAdenville
and Pharr Yarns.
These requests are addressed below in this fact sheet.
Page I

II. RECEIVING STREAM
A. Stream Classification
This facility discharges to the South Fork Catawba River in the Catawba River Basin, classified as WS-V
waters, HUC 03050102, stream index 11-129-(15.5). This section of the South Fork Catawba River is not
impaired in the draft NC 2016 303(d) list.
B. Lake Wyle TMDL/Nutrient Limits
Backgo
Due to eutrophic conditions and chlorophyll a water quality violations a TMDL and Nutrient
Management Strategy was developed in 1995 for the North Carolina portion of Lake Wylie and its
tributaries. The Nutrient Management Strategy was approved by the EPA in 1998. The strategy set
individual allocations for existing WWTPs and new/expanding discharges. The Division incorporated
TN and TP limits am expressed as average concentrations. TN are summer limits (April -October); those
for TP apply year-round. The Long Creek facility is subject to the Lake Wylie Nutrient Management
Strategy and included permit limits of 6 mg/1(summer only) for Total Nitrogen (TN) and 1 mg/l for Total
Phosphorus (TP) in the permits since January 1, 2000.
In order to transfer nutrient allocations, nutrient limits for the facilities must be expressed as mass loads
rather than concentrations. Therefore, the Division must adopt a standard way of expressing TN and TP
limits that both enables nutrient transfers and ensures that any transfers remain consistent with the
approved TMDL.
Annual mass limits will enable the transfer of allocations among dischargers and are consistent with the
phosphorus allocations set in the TMDL. However, annual limits for nitrogen do not, by themselves,
ensure that summer -season loads satisfy the TMDL: a facility could exceed its allowable summer load
and still meet the annual limit by improving plant performance for the rest of the year. An additional limit
(or other control) is necessary to protect water quality during the summer season.
Proposed TMDL Implementation
The Division proposes to implement the Lake Wylie TMDL using the following approach:
• The distribution of nutrient allocations — and any transfer of allocations — must be consistent with
the approved Lake Wylie TMDL.
a. The point source allocations assigned in the TMDL to the lake and its tributaries are
valid only in the original study area and cannot be transferred outside that area except
through modification of the TMDL and the approval of EPA Region 4.
b. Similarly, the tributary allocations identified in the TMDL are only valid within the
assigned subwatersheds and cannot be transferred elsewhere without EPA approval.
• Within each subwatershed, transfers and other changes in allocations cannot result in exceedance
of the tributary allocations in the TMDL. If additional industrial facilities request allocations
based on BAT determinations (none are foreseen at this time), the Division will consider the
request with Region 4.
• Only those allocations that were identified in the TMDL (WWTPs) or authorized (industries with
BAT determinations) are valid. Facilities within the Lake Wylie study area cannot receive credit
for connecting other WWTPs located outside the study area.
• No transfer of allocation will be approved or implemented until the Division is satisfied that the
transfer will not result in localized impacts ("hot spots").
• TN limits will be implemented as follows:
a. Set summer mass TN limits for all affected dischargers based on the summer daily loads
in the TMDL;
Page 2

b. Set winter limit based on 12 mg/l or other approved BAT determinations;
c. Add summer -only mass TN limits for affected industries based on the same daily loads as
their annual limits.
TP limits will be implemented as annual mass limit based on daily loads specified on the TMDL
or approved BAT determination.
Proposed Limits
With this permit renewal Gastonia is requesting to combine the allocations from both the Long Creek
WWTP and Eagle Road WWTP into a combined bubble allocation. In addition, Gastonia requested to add
the loads from the following decommissioned facilities: Ranlo, High Shoals, McAdenville and Pharr
Yarns. The Eagle Road facility (NC0006033) was originally permitted as a textile facility, Cramerton
Automotive Products, owned by JPS, subsequently it was purchased by the Town of Cramerton and
permitted for domestic wastewater. Now the facility is owned and operated by Gastonia and renamed
Eagle Road WWTP.
The proposed limits for the Long Creek permit will follow the strategy outlined above. Since both the
Long Creek WWTP and Eagle Road WWTP (NC0006033, previously Cramerton) had allocations in the
TMDL and discharge within the same subwatershed, allocations will be combined. The towns of Ranlo,
High Shoals, and Stanley are connected to the Long Creek facility but w*re not included in the TMDL
as they are minor facilities. As such they don't have allocations in the approved TMDL implicit or
explicit. The Division can't add loads corresponding to these connected facilities to the Long Creek
permit. Pharr Yarns is an industrial facility with a discharge of domestic and industrial wastewater that is
not yet connected to the Long Creek facility. Until a connection is completed and the Pharr Yams permit
is rescinded the Phar Yams allocation can't be included in the permit for the Long Creek WWTP.
Table 1. TN Proposed Limits
Total Nitrogen
Facility
Q
MGD
Summer
mg/l
Summer
lb/d
Summer
lb/season
Winter
mg/l
Winter
lb/d
Winter
lb/season
Long Creek
16.0
6.0
801
171,337
12.0
1,601
241,793
Eagle Road
4.0
6.0
200
42,834
12.0
400
60,448
Combined
Allocation
2149171
302,242
Table 2. TP Proposed Limits
Total Phos
horus
Facility
Q
MGD
Annual
mg/1
Annual
lb/d
Annual
lb/yr
Long Creek
16.0
1.0
133
48,706
Eagle Road
4.0
1.0
33
12,176
Combined Allocation
1
1
60,882
C. South Fork Catawba River/Lake Wylie Data Analysis
South Fork Catawba River Arm:
The Division maintains two ambient monitoring stations in the South Fork Catawba River. One station is
at SR 7 near McAdenville downstream of the Long Creek WWTP (upstream of Eagle Road WWTP) and
the other station is downstream of the Eagle Road WWTP at SR 273. (See attached map)
Page 3

Table 3. Ambient Monitorine Stations South Fork Catawba River (SFCR)
Station ID
Location
Parameters Monitored
Collection Dates
C650000
SFCR at SR 7 near
Ammonia, Nitrate & Nitrite,
1997 through 2013
McAdenville
TKN, TP
C700000
SFCR at SR 273
Ammonia, Nitrate & Nitrite,
1997 through 2001
(Armstrong Rd
TKN, TP
CTB 174
SFCR at SR 273
Ammonia, Nitrate & Nitrite,
2001, 2002, 2007 and
(Armstrong Rd)
TKN, TP, chloro h ll a
2012
Table 4. Ambient Monitoring Stations Data Summary
Parameter
C650000
C700000 &
CTB 174
Ammonia
(mg/1)
Average
0.07
0.06
Maximum
0.56
0.4
Min
< 0.02
< 0.01
Nitrate & Nitrite
(mg/1)
0.8
0.13
-Average
Maximum
1.9
0.36
Min
0.26
0.01
TKN
(mg/1)
Average
0.44
0.36
Maximum
1.6
0.54
Min
< 0.2
0.2
TP
(mg/1)
Average
0.14
0.05
Maximum
0.68
0.08
Min
0.04
0.02
Chlorophyll a
(µg/1)
Average
No data
18
Maximum
No data
32
Min
No data
11
Station CTB 174
Chlorophyll a (ug/1)
35
30
25
20 ......�... ._ .... ........
15
10
5
W
.y ti ti 'i ry N ry n n n n n n r I� r r N N N N N
0p V1 0p N O1 M 1p N rl K 00 Q1 NI � O N 1p �-1 V N 1p O
n ao eo m �n n �n �o r ro m m rn
Trends at the downstream station indicate an upward trend for chlorophyll -a, although it is consistently
below 40 µg/l. Total phosphorus and Nitrate & Nitrite levels show a downward trend while TKN shows
and upward trend.
Lake Wylie:
There are four stations in Lake Wylie near Lakewood, near the Wylie Dam.
Page 4

Table 5. Lake Wvlie near Lakewood
Station ID
Agency
Collection Dates
Parameters Monitored
2001, 2002, 2007 and
Ammonia, Nitrate & Nitrite, TKN, TP,
198D
DWQ
2012
chlorophyll a
RL 03339
DHEC
2003
Ammonia, Nitrate & Nitrite, TKN, TP,
chlorophyll a
CW-201
DHEC
1999-2014
Ammonia, Nitrate & Nitrite, TKN, TP,
chlorophyll a
Ammonia, Nitrate & Nitrite, TKN, TP,
RL 06433
DHEC
2006
chlorophyll a
Table 6. Lakewood Ambient Monitoring Stations Data Summary
Ammonia
(Mel)
Average
0.17
Maximum
0.8
Min
< 0.1
Nitrate & Nitrite
(mg/1)
0.19
-Average
Maximum
0.37
Min
<0.1
TKN
(mg/1)
Average
0.41
Maximum
1.6
Min
<0.1
TP
(mg/1)
Average
0.04
Maximum
0.23
Min
< 0.02
Chlorophyll a
(µg/1)
Ave ra e
11
Maximum
19
Min
2.5
Chlorophyll -a shows very similar trend to the station in the South Fork Catawba River, with a slight
upward trend and no values over 40 µg/1.
20.0
18.0
16.0
14.0
12.0
10.0
8.0
&0
4.0
2.0
0.0
Lakewood Stations
Chlorophyll a (ug/1)
O O O ti N N N N M t l I h h h n h n O O 1 N N M
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I .-I ... r
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 .� ✓1 t+l 0 0 Ol of O W A N tp N nl O h V lO Vl
h � OJ II1 l0 I� W OJ Ifl N l0 r DJ 01 Ifl O1 O1 h
PH1C S

III. DATA REVIEW
A. DMR Review
DMR were reviewed for the period of January 2011 to January 2016. Data are summarized in Table 1.
There were no reported exceedances of permit limits.
Data for TSS, BOD, ammonia and fecal coliform were evaluated according to the Division's Monitoring
Frequency Reduction Guidance. All parameters meet the conditions to receive reduction in monitoring
frequency except for BOD. Summer BOD average for the last three years is greater than 50% of the
monthly average limit.
Table 7. Data Summary
Parameter
Units
Average
Max
Min
Flow
MGD
6.197
23.230
3.994
BOD
m
2.8
18
< 2
NH3N
mg/1
0.23
15.4
< 0.2
TSS
mg/1
2.6
24
< 2.5
H
SU
6.9
8.7
6.1
DO
Mg/1
9.1
14
6.1
Temperature
°C
20.1
27.7
9.6
TRC
1
20
49
< 20
TN
mg/1
6.3
20.7
0.9
TP
mg/1
0.3
3.8
< 0.1
Fecal Coliform
#/100 ml
2.2
10,700
< 1
Color
Admi Units
27
133.8
< 25
B. Mercury Evaluation
A mercury evaluation was conducted in accordance with the permitting guidance developed for the
implementation of the statewide Mercury TMDL to determine the need for a limit and/or Mercury
Minimization Plan (MMP). Based on stream dilution the water quality based effluent limitation
(WQBEL) for mercury is 64.7 ng/l. The technology based effluent limit (TBEL) is 47 ng/l. None of the
annual averages exceeds the WQBEL or TBEL, therefore no limit will be implemented. The facility had
detections above 1 ng/l over the past five years, therefore a Mercury Minimization Plan will be required
in the permit. A condition will be added to the permit describing the requirements for the MMP. See the
attached mercury evaluation spreadsheet.
Table 8. Mercury Evaluation
2011
2012
2013
2014
2015
# of Samples
5
5
3
11
3
Annual Average, n
1.0
0.5
0.5
0.9
0.7
Maximum Value, n
2.53
0.59
0.50
2.54
1.06
TBEL, n
47
WQBEL, n
64.7
C. RPA:
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero
background; 3) use of %2 detection limit for "less than" values; and 4) streamflows used for dilution
Page 6

consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of
dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
A reasonable potential analysis was conducted on effluent toxicant data collected between January 2011
and November 2016. Based on this analysis, the following permitting actions are proposed for this
permit:
• No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since
they did not demonstrate reasonable potential to exceed applicable water quality
standards/criteria and the maximum predicted concentration was <50% of the allowable
concentration: copper, zinc, nickel, chromium, silver, arsenic and chloroform.
A spreadsheet of the RPA results is attached to this Fact Sheet.
D. Priority Pollutant Analysis:
The application includes the results of three priority pollutant analyses. No priority pollutants were
detected except for dichlorobromomethane. Dichlorobromomethane which were detected at levels below
the water quality standards.
E. Aquatic Toxicity Testing:
Permit requires chronic toxicity, ceriodaphnia dubia, 19 %. The facility passed 20 out of 20 toxicity tests.
The application included four second species toxicity tests with passing results.
F. Instream Monitoring:
The permit requires instream monitoring for dissolved oxygen, temperature and conductivity at one
upstream location and two downstream locations. The permiee is not a member of the Yadkin -Pee Dee
River Basin Association. Instream data does not show any violations of water quality standards. Since
data is very similar and there were no indications of water quality standards exceedances at the
downstream stations the monitoring station at the canoe access point was eliminated from the monitoring
requirements. The permit will require quarterly monitoring for hardness at the upstream station to collect
data to calculate hardness based metals and reasonable potential.
IV. LIMITS AND MONITORING REQUIREMENTS:
Current conditions, as well as the basis for the limits are summarized in Table 9.
Page 7

Table 9. Current Conditions and Proposed Changes
ParameteX
urr Ceat
-
LimitJ'C,bnditon
Proposed +Change:
-- - -
04(shfior couldl, on/Cliaage
Flow
16 MGD
No changes
15A NCAC 2B .0505
BOD5 Summer
5 mg/l MA
No changes
Water quality based for protection of
7.5 m WA
the DO standard.
Winter
10 mg/l MA
15m 1WA
NH3 N Summer
2 mg/l MA
Monitoring frequency
Water quality based for protection of
6 mg/l WA
reduced from daily to
the DO standard.
Winter
3/week
Monitoring reduction as per
4 mg/l MA
12 mg/1 WA
Division's Guidance for Monitoring
Frequency Reduction.
TSS
30 mg/1 MA
Monitoring frequency
Secondary treatment standards/40
45 mg/l WA
reduced from daily to
CFR 133 / 15A NCAC 2B .0406
3/week
Monitoring reduction as per
Division's Guidance for Monitoring
Frequency Reduction.
Dissolved Oxygen
> 6 mg/1
No changes
State WQ standards, 15A NCAC 2B
.0200
pH
6 to 9 SU
No changes
State WQ standards, 15A NCAC 2B
.0200
Fecal coliform
200/100 ml MA
Monitoring frequency
State WQ standards, 15A NCAC 2B
400/100 ml WA
reduced from daily to
.0200
3/week
Monitoring reduction as per
Division's Guidance for Monitoring
Frequency Reduction.
Total residual
28 µg/1 DM
No changes
State WQ standards, 15A NCAC 2B
chlorine
.0200
Total Nitrogen
6 mg/l
Summer: 214,171
Lake Wylie TMDL permitting
lb/season
strategy. "Bubble Limits" for Long
Winter: 302,242
Creek and Eagle Road.
lb/season
Total Phosphorus
1 mg/l
60,882 lb/yr
Lake Wylie TMDL permitting
strategy. "Bubble Limits" for Long
Creek and Eagle Road.
Color
Monitor
Remove monitoring
Past monitoring shows color is not a
ollutant of concern.
Chloroform
Monitor
Remove monitoring
No reasonable potential to exceed the
State WQ standards, 15A NCAC 2B
.0200
Nickel
153 µg/l DM
Remove limit and
No reasonable potential to exceed the
monitoring
State WQ standards, 15A NCAC 2B
.0200
Hardness
No requirements
Effluent and upstream
To collect data for the calculation of
monitoring
hardness dependent dissolved metal
standards.
*Ma — Monthly Average, WA — Weekly Average, DM — Daily Max
V. SUMMARY OF PROPOSED CHANGES:
1. Special Condition A.(9) was added describing requirements for submittal of electronic DMRs.
2. The downstream monitoring station at the canoe access point was eliminated from the instream
monitoring requirements.
Page 8

VI. PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: January 25, 2017
Permit Scheduled to Issue: March 13, 2017
VII. NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please contact
Teresa Rodriguez at 919-807-6387.
NAME: DATE: I LIq k-7
Pagc 9

Gastonia Outfall 001
NCO020184 Freshwater RPA- 95% Probability/95% Confidence Using Metal Translators Qw = 16 MGD
MAXIMUM DATA POINTS = 58
Qw (MGD) = 16.00
IQIOS(cfs)= 88.92
7Q10S (cfs) = 109.00
7Q IOW (cfs)= 200.00
30Q2 (cfs) = 272.00
Avg. Stream Flow, QA (cfs) = 653.00
Receiving Stream: NO HUC NUMBER
W WTP/WTP Class: Long Creek W WTP 14
IWC% @ IQIOS = 21.80794935
IWC%@7QIOS= 18.53512706
IWC%@7QIOW= 11.03202847
IWC%@30Q2= 8.355795148
IW%C@QA= 3.65889643
Stream Class: WS
Acute = 30.89 mg/L
Chromic = 30 mg/L
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS WATER SUPPLY
Effluent Hard:() val> 100 mg/L 0 val <25 mg/L
Effluent Ham Men = 52 mg/L
PARAMETER
STANDARDS B CRITERIA(2)
ur
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
1)
a
NC WQS / Applied '/z FAV /
Chronic Standard Acute
it # Det. Max Pred Cw Allowable Cw
Acute(FW): 1,559.1
Arsenic
C
150 FW(7QIOs) 340
ug/I.
_------_-'----------
51 0
NO DETECTS
Chronic(FW):---809.3
Max MDL = 1
No RP
Arsenic
C
10 HH/WS(Qavg)
ug/L
Chronic (HH):---273.3 -
--------------------
Max MDL= I
Acute: 11.111
No RP
Cadmium
NC
0.6772 TR(7Q10s) 2.4230
ug/L
51 0
NO DETECTS
......................................
Chronic: 3.653
.-_____
Max MDL= 1
Acute: 4,935.1
Chromium 111
NC
136.7096 FW(7QIOs) 1076.2533
µg/L
0 u
N/A
_
Chronic: '-- 737.E
-------'-'-'-'-'-'---'-'--
Acute: 73.4
Chromium VI
NC
11 FW(7QIOs) 16
µg/L
0 0
N/A
_ _
Chrouic: 59.3
Chromium, Total
NC
µg(L
51 S0
17 z
No RP
Acute: 58.61
No RP
Copper
NC
9.2104 FW(7QIOs) 12.7812
ug/L
51 51
5.20
_
Chronic:-----49.69 -----------------------------
No value> Allowable Cw
Acute (FW): 1,838.3
Nickel
NC
43.4461 FW(7QIOs) 400.8870
µg/L
No RP
58 58
42.0
_ _ _
Chronic (FW):-_-234.4 -
---------------------
N_o value> Allowable Cw
Nickel
NC
25.0000 WS(7QIOs)
µg/L
Chronic(WS): 134.9
No value> Allowable Cw
Acute: 256.8
No RP
Selenium
NC
5 FW(7QIOs) 56
ug/L
51 0
NO DETECTS
20184 RPA.xlsm, rpa
Pagel of 2 1/19/2017

Gastonia Outfall 001
N CO020184 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators Qw = 16 M G D
Chronic: 27.0
Max MDL= 1
Acute: 1.955
No RP
Silver
NC
0.06 PW(7QIOs) 0.4264
ug/L
51 0
.NO DETECTS
_________
_
Chroni_ _____ _ _
c: 0.324
Max MDL= I
Acute: 689.5
No RP
Zinc
NC
1479233 PW(7QIOs) 150.3763
ug/L
51 51
82.1
_____ _
_ _____________
_
Chronic: 798.1
No value > Allowable Cw
Acute: NO WQS
No RP
chloroform
C
60 11 H(Qavg)
µgfL
23 23
17.46600
_ _ _
___________________________f
_ ___
Chronic: 1639.83871
No value > Allowable Cw
Acute: NO WQS
dichlorobromomethane
C
0.95 HH(Qavg)
µg/L
0 0
N/A
-----------------------------
_
Acute:
0 0
N/A
___—_—____________._.___
_ _ _ _—_______
Chronic:
Acute:
0 0
N/A
_ _
Chron_ic: _-_-.____
.____
20184 RPA.xlsm, rpa
Page 2of2 4/19/2017 '

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY CHECK WQS
Table 1. Project Information
❑CHECK IF HQW OR ORW WQS
Facility Name
Gastonia
WWTPIWTP Class
Long Creek WWTP 14
NPDES Permit
NC0020184
Outfall
001
Flow, Qw (MGD)
16.000
SF Catawba River
Receiving Stream
HUC Number
Stream Class
WS
❑+Apply WS Hardness WQC
7Q10s (cfs)
109.00
200.00
7010w (cfs)
30Q2 (cfs)
272.00
QA (cfs)
653.00
1 Q10s (cfs)
PrUMEMXMW.mTPW 88.92
Effluent Hardness (Median)
52 mg/L
Upstream Hardness
.____________
default 25 mg/L (Hard Aveage = 25 mg/L)
__________9 ___-_--_-
Combined Hardness Chronic
30 m /L
.__________m_
Combined Hardness Acute
_____________.___._.__'_
30.89 mg/L
Data Source(s)
Perot
Par02
Par03
Par04
Par05
Par06M
Par07
Perlis
Par09
ParlO
Parll
Par12
Par13
Part4
Par15
Parts
Par17
Parts
Par19
Par20
Par21
Par22
Par23
Par24
Table 2. Parameters of Concern
Name was Type Chronic Momeer Acute PQL Units
Arsenio
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HHANS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Trout
NC
0.6772
TR
2.4230
ug/L
Chlorides
water Supply
NC
250
WS
mg1L
Chlorinated Phenolic Compounds
Water Supply
INC
1
A
ug/L
Total Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
136.7096
FW
1076.2533
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
9.2104
FW
12.7812
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
3.6114
FW
95.7433
ug/L
Mercury
Aquatic Life
INC
12
FW
0.5
ng/L
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
43.4461
FW
400.8870
pg/L
Nickel
Water supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Lire
NC
0.06
FW
0.4264
ug/L
Zinc
Aquatic Life
NC
147.9233
FW
150.3763
ug/L
chloroform
Human Health
C
60
HH
pg/L
dichlorobromomethane
Human Health
C
0.95
HH
pg/L
20184 RPA.xSm, input
1/19/2017

REASONABLE POTENTIAL ANALYSIS
Effluent Hardness (monthly average) zlmum erne
points=6a
Date Data BDL=1/2DL Results 1
52 52 Sid Dev. N/A
Mean 52,0000
C.V. 0.0000
n 1
101h Per value 52.00 mglL
Medial Value 52.00 mglL
Max. Value 52.00 mg2
H2
1
2
3
4
5
6
7
8
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Upstream Hardness v.lms-then copy
. malmum do.
paints,"
Date Data BDL=1/2DL Results
25 25 Ste Dev.
Mean
C.V.
n
10h Per value
Average Value
Max. Value
25.0000
0.00D0
1
25.00 M91L
25.00 mglL
25.00 mg8.
8 Par02
11.. RASTE apECULL
Arsenic
v.lv..•tMe copy
. MW mvm deter
pants=d0
Date Data
BDL=1/2DL
Results
<
1
0.5
Sid Dev.
00000
<
1
0.5
Mean
0.5000
<
1
0.5
C.V.
0.0000
1
0.5
n
51
1
0.5
1
0.5
Mull Factor =
1.00
<
1
0.5
Max. Value
0.5 uglL
<
1
0.5
Max. Fred Cw
O DETECTS uglL
<
1
0.5
0.5
<
1
0.5
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
<
1
0.5
1
0.5
1
05
<
1
0.5
1
0.5
1
0.5
<
1
0.5
<
1
0.5
1
0.5
1
0.5
<
1
0.5
1
0.5
<
1
0.5
1
0.5
<
1
0.5
<
1
0.5
20184 RPAA m, data
1/19/2017

1/19/17 WQS = 12 ng/L
Facility Name: NC0020184 Long Creek WWTP
Total Mercury 1631E PQL = 0.5 ng/L
Date Modifier Data Entry Value
MERCURY WQBEL/TBEL EVALUATION V:2013-5
No Limit Required
MMP Required
7Q10s = 109.000 cfs WQBEL = 64.74 ng/L
Permitted Flow = 16.000 47 ng/L
1/1/2011 <
1
0.5
3/1/2011
1.03
1.03
4/1/2011 <
1
0.5
5/1/2011 <
1
0.5
6/1/2011
2.53
2.53
1.0 ng/L - Annual Average for 2011
1/1/2012 <
1
0.5
3/1/2012 <
1
0.5
5/1/2012 <
1
0.5
6/1/2012 <
1
0.5
9/1/2012 <
1.18
0.59
0.5 ng/L - Annual Average for 2012
1/1/2013 <
1
0.5
2/1/2013 <
1
0.5
3/1/2013 <
1
0.5
0.5 ng/L - Annual Average for 2013
1 /1 /2014 <
1
0.5
2/1/2014
1.42
1.42
3/1 /2014
1.03
1.03
4/1/2014 <
1
0.5
5/1/2014 <
1
0.5
6/1/2014 <
1
0.5
7/1/2014
2.54
2.54
8/1/2014 <
1
0.5
9/1/2014
1.52
1.52
10/1/2014 <
1
0.5
11/1/2014<
1
0.5
0.9 ng/L - Annual Average for 2014
1/1/2015 <
1
0.5
3/1/2015 <
1
0.5
5/1/2015
1.06
1.06
0.7 ng/L- Annual Average for 2015

Reduction in Frequency Evalaution
Facility: Gastonia Long Creek
Permit No. NC0020184
Review period (use 3) Nov 2013 - Nov 2016
Approval Criteria:
1. Not currently under SOS
OK
2. Not on EPA Quarterly noncompliance
report
Ok
3. Facility or employees convicted of CWA
violations
OK
Y/N Y/N Y/N Y/N Y/N
Data Review
Weekly
average
limit
Monthly
average
limit
50%MA
3-yr mean
(geo mean
for FC)
<50%?
200%MA
a daily
samples
>200%
<15?
200%
WA
q daily
samples
>200%
<20?
If of non -
monthly
limit
violations
<2?
g civil
penalty
asessment
>1?
Reduce
Frequency?
(Yes/No)
BOD (summer)
7.5
5
2.5
3.3
N
10
2
Y
0
0
0
0
Y
N
BOD (winter)
15
10
5.0
2.6
Y
20
O
Y
Y
N
TSS
45
30
15
1.4
Y
60
O
Y
Y
0
Y
Y
Ammonia (summer)
6
2
1
2 2
Y
4
1
YL
Y
0
Y
Y
Ammonia (winter)
12
4
2
0.4
Y
8
3
Y
O
Y
O
Y
Y
Feral Coliform
400/100
200/100
1 1001
1.6
Y
8001 O Y 1 0
Y
0
Y
Y

Water Resources
ENVIRONMENTAL OUAUTT
MEMORANDUM
IYa3
January 25, 2017
Clinton Cook, DW R / Regional Engineer
Mooresville Regional Office
From: Teresa Rodriguez
919-807-6387
NPDES Unit
Subject: Review of Draft NPDES Permit NCO020184
Gastonia/Long Creek WWTP
Gaston County
ROY COOPER
Goaemor
MICHAEL S. REGAN
Secretary
S. JAY ZIMMERMAN
Ui¢anr
Please indicate below your agency's position or viewpoint on the draft permit and return this form by February 25,
2017. If you have any questions on the draft permit, please feel free to contact me at the telephone number shown
above.
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained properly, the stated
effluent limits are met prior to discharge, and the discharge does not contravene the designated water quality
standards.
❑ Concurs with issuance of the above permit, provided the following conditions are met:
❑ Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signed (//� J � Date: ICI 120�7
State of North Carolina I Envirminental Quality I water Resources
1617 Mail Service Center I Raleigh, North Carolina 27699-I617
919 907 6300

PUBM."TICE
Ndrih Carolina
Environmental
Management
Commiaaia rP
NPDES Unit
1611 Mail Service AFFIDAVIT OF INSERTION OF ADVERTISMENT
Center
Raleigh, NC The Gaston Gazette
27699-1617
Notice of Intent
to Issue a
NPDES Gastonia, N.C.
Wastewater Gaston County
Permit
The North Carolina Envi-
ronmental Management
Commission proposes to
issue a NPBesP°awaeta-
The Gaston Gazette does certify that the advertisement for:
water discharga permit to
the person(s) listed below.
Witten comments P menuosed regardper-
WASTEWATER PERMIT: NC0006033, Eagle Road WWTP; NC0020184, Long Creek
30
rn be accape0 until
WWTP; NC0074268, Crowders
hold a public hearing
Measuring 9.84 inches appeared in The Gaston Gazette, a newspaper in
should there be a shgnlfl-
published
at.degree
emalcom ants
Gaston County, Gastonia, N.C., in issue(s):
,ea
and/or information re-
quests to DWR at the
above address. Interested
persons may visit the DW R
01 /29/201 7.
at 512 N. Salisbury Street;
Raleigh, NC to review in-
formation on file. Addi-
tional information on
NPDES permits and this
notice may be found on our
webstte: htto //deo nc
gov/about/divisions/water-
resourcesAvater-resources
-oertnitUwasteweter-brenc
a by calling (919)
807.6397.
The City, of Gastonia has
applied for renewal of per-
mit NC0006033 for Eagle
Road WWTP in Gaston
County; this facility dis-
stewrofmunicipalwaetesh
Name of Account: NCDENR/DWQ/NPDES
Catawba River, Catawba
Cato
Order Number: 54581776
Basin.
Ad Number: 54701813
The City of Gastonia (P.O.
Box 1748, Gastonia, NC
28053) requested renewal
of permit NCO020184 for
LP in
GastonCreek
County;�facilty
Sworn to, and subscribed before me this 30 th day of January, 2017
discharge is treated muno-
rpal wastewater to S. Fork
Catawba River, Catawba
River Basin.
The City of Gastonia re-
quested renewal of mhN
NCO074268 for the L�rowd-
ers Creek WWrP in Gas-
ton County. This permitted
treateddischargmunicipale is 0 waste-
\\\\\MOD .tttttlllllllllllrlll/�l/i
B•
water to Crowders Creek in
Z.TPNtE
the Catawba River Basin.
r f
Stephanie B. Sisk, Notary Public
1c x m ary zs, zon.
NOTARY
Text GS81776 to 566.54
PUgLtC U My Commission Expires March 23, 2020

- TWO vE RS
U T I L I T I E S
We are TRU to our customers!
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Renewal Application of NPDES Permits
Long Creek Wastewater Treatment Plant (NPDES #NC0020184)
Eagle Road Wastewater Treatment Plant (NPDES #N00006033)
Dear Sir or Madam:
KCl/CI v GU/ UCIV K/ UVV r[
AUG - 4 2014
Water Quality
Permitting Section
Please find attached, the renewal applications for Two Rivers Utilities National Pollutant Discharge
Elimination System (NPDES) Permits #NC0020184 and #NC0006033 for the Long Creek and Eagle
Road Wastewater Treatment Plants. These permit renewal applications with attachments are
being submitted by the August 4, 2014 deadline to comply with the requirement to apply 180 days
prior to the date of permit expiration (January 31, 2015). As requested, please find for each plant,
the original signed version of this information along with two copies. Copies of this cover letter are
included inside each packet.
The Long Creek Wastewater Treatment Plant continues to operate as an advanced biological
nutrient removal plant treating municipal wastewater for the City of Gastonia and surrounding
area. The Eagle Road Wastewater Plant continues to operate as an extended aeration plant with
chemical phosphorus removal treating wastewater for the Town of Cramerton and surrounding
area. Since the last permit renewal request, numerous maintenance items and minor upgrades
have taken place throughout these facilities. Authorizations to construct have been obtained
.. where appropriate. Examples of these upgrades are shown below and more information can be
provided if desired:
• Upgraded dissolved air system and controls on two aeration basin trains at the Long Creek
W WTP.
• Installed an online nitrogen probe on the chlorine contact basin effluent at the Long Creek
WWTP.

• Repurposed an out of service polishing pond as an emergency storage basin at the Long
Creek WWTP.
• Currently rehabilitating the dissolved air floatation pump station and replacing the pumps
at the Long Creek WWTP.
• Installed a de -watering pump for the aerobic digester along with piping and valves at
the Eagle Road WWTP
_ • Installed a flushing system to clean the sodium hypochlorite and sodium bisulfite
chemical feed lines going into the chlorine contact and dechlorination basins at the
Eagle Road WWTP.
All analyses have been tested by North Carolina certified laboratories in accordance with 40 CFR
Part 136 requirements. Efforts have been made to obtain seasonal variation in the sampling as
much as was possible. This application includes all data gathered for the last three years (July 1,
2011 through June 30, 2014).
With this permit renewal, we respectfully request the following changes to our permits:
Lone Creek WWTP (NPDES #NC0020184) and Eagle Road WWTP (NPDES #NC0006033)
• As discussed with Mr. Mike Templeton, Mr. Tom Belnick and Ms. Kathy Stecker, and as
outlined in a 6/23/14 letter to Mr. Templeton; we request that limits for Total Nitrogen
and Total Phosphorus for these two facilities be expressed as a single Ibs/day aggregate
or bubble limit. We also request that credit be applied to this Ibs/day limit for the other
facilities which have been or will soon be decommissioned and whose flow is being
treated by one of these two facilities. A copy of this letter with details of this request is
included in the back of these permit renewal packets.
• Data for the last three years has been evaluated and both facilities meet the
requirements for reduction in monitoring frequencies in NPDES Permits for
exceptionally performing facilities as outlined in DENR's October 22, 2012 policy
statement. In accordance with this policy we are requesting that the minimum required
monitoring frequency for BODs, TSS, NH3-N and fecal coliform be reduced to 2x a week
for both the Long Creek and Eagle Road WWTPs. A copy of the data used for this
evaluation is attached in the back of these permit renewal packets.
• Upstream and downstream monitoring has not shown a noticeable impact from the -
treatment plant discharges, but can be burdensome to perform while maintaining
staffing requirements at the treatment plants — particularly when required three times a
week in the summer. We request that the upstream and downstream monitoring
requirements be reduced to once -per -week year-round.
Long Creek WWTP (NPDES #NC0020184)
• Weekly monitoring for Nickel at the Long Creek WWTP effluent showed an average
.. nickel concentration of 8.8 µg/L and a maximum concentration of 28.2 µg/L. We
request that this monitoring frequency requirement and limit be removed.

• Quarterly monitoring of the Long Creek WWTP effluent for ADMI color showed an
.. average color reading of 14.9 ADM[ Color Units and a maximum color reading of 133.8
ADMI Color Units. With the current industrial users discharging to the Long Creek
WWTP, there is very little potential for any significant color to be imparted into the
�• South Fork Catawba River. We request that this monitoring frequency be removed.
Eagle Road WWTP (NPDES #NC0006033)
• Daily monitoring for conductivity at the Eagle Road WWTP effluent showed an average
conductivity measurement of 445 umhos and a maximum daily measurement of 1,361
_ umhos. There are no large industrial sources of conductivity for this facility. We
request that this monitoring frequency requirement be removed.
Two Rivers Utilities remains very committed to good environmental stewardship and take our
obligation to protect the receiving waters very seriously. We request these changes in the
NPDES permits in order to allow us to focus on other environmental issues (such as removing
the problematic discharges from some smaller municipalities) while not overburdening our rate
payers. If you would like any additional information or if I can be of any assistance regarding
this application or these requests, please feel free to call me at 704-842-5106 or e-mail at
[e-mail].
Sincerely,
David Shellenbarger
Assistant Division Manager - Compliance
Wastewater Treatment Division
Two Rivers Utilities
cc: Larry Cummings — Division Manager of Wastewater Treatment, TRU
_ Stephanie Scheringer— Assistant Division Manager of Operations, TRU
Michael Graham — Chief Senior Plant Operator/ORC — Long Creek WWTP, TRU
Hubert Hampton — Senior Plant Operator/ORC — Eagle Road WWTP, TRU
Certified Mail: 7014 0150 0002 0276 0692

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.6 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Bimbo Bakeries USA, Inc.
Mailing Address: 1029 Cox Road
Gastonia, NC 28054
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge of manufacturing process wastewater, domestic wastewater, washdown water, non -contact cooling water, and blowdown water.
F.S. Principal Products) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Bread
Raw material(s): Flour. Yeast, Salt Sugar Bran Nuts Raisins Wheat Sesame Seeds Toppings Meal
F.6. Flow Rate.
a. Process wastewater flow rare. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
5,095 gpd (✓ continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent
2,985 gpd ( continuous or ✓ intermittent) "Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Century Textiles. Inc.
Mailing Address: 803 North Oakland Street
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Currently domestic wastewater only. Future discharge will be from textile dveine and finishing processes.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Printed textile fabrics
Raw material(s): Woven man-made fabrics, dves, softeners and emulsifiers
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
N/A gpd ( continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
•25 gpd ( continuous or intermittent) -Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
N/A
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Choice USA Beverages Inc.
Mailing Address: 809 East Franklin Blvd.
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge of manufacturing process wastewater, and washdown wastewater.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Carbonated Beverages
Raw material(s): Flavorings citric acid sodium/potassium benzoate and corn syrup
F.6. Flow Rate.
a. Process wastewater Flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
34.259 gpd (✓ continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater Flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
-1,000 gpd ( continuous or ✓ intermittent) *Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WVVfP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Colonex USA, LLC
Mailing Address: 1711 Seem Court
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge domestic and Process wastewater from scouring, bleaching and finishing PES/CO circular knitted fabrics.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): PES/CO Circular knitted fabrics
Raw material(s): Water, soaps and misc. chemicals
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
17599 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
•550 gpd ( continuous or intermittent) *Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
N/A
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SR1 caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Cookson Company, LLC
Mailing Address: 800 Tulip Drive
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge process wastewater from 3-stage phosphating system to powder coat rolling doors.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Aluminum, merraimed galvanized & stainless steel
Raw material(s): Rolling doors. cleaner & chemical solutions
F.6. Flow Rate.
a. Process wastewater now rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
3,909 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater now discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
•3 150 gpd ( continuous or intermittent) *Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Metal Finishing 40CFR 433.17
F.B. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No Ifyes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Daimler Truckers (Formerly Freightliner Corporation then Gastonia Components & Logistics)
Mailing Address: 1400 Tulip Drive
Gastonia. NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SI U's discharge.
Wastewater discharges from E-Coat lines Burn'I able Vibratory, Zinc Phoschating, wash down Wolin+ nun -contact cooling,containment and DI unit
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Steel and Aluminum track pans and sub -assembly
Raw material(s): Various track pans phosohatina chemicals. paint
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
20,132 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
44,250 gpd (✓ continuous or intermittent) •31,250 domestic wastewater-25gpd/person
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Metal Finisher 40CFR433.17
F.B. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVERBASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Earth Farms Organic, LLC
Mailing Address: Post Once Boa 184
Stanley NC 28164
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Hauled wastewater from grease dewatering of restaurant grease trap wastewater.
F.G. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Composted materials
Raw material(s): Restaurant grease trap waste process additives such as lime cationic polymers and water
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
101,769 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
N/A gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.S and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Gaston County Landfill
Mailing Address: 3155 Philadelphia Church Road
Dallas, NC 28034
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge of landfill leachate.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): N/A
Raw material(s): N/A
F.6. Flow Rate.
a. Process wastewater Flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
23.157 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater Flow rate. Indicate the average daily volume of non -process wastewater Flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
•625 gpd ( continuous or intermittent) -Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits E Yes ❑ No
b. Categorical pretreatment standards ❑ Yes E No
If subject to categorical pretreatment standards, which category and subcategory?
N/A
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes E No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Gaston Memorial Hospital owned by Cerement Health, Inc. Pine # 001
Mailing Address: 2525 Court Drive
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge of domestic, washdown, laundry, laboratory, non -contact cooling, boiler/cooling tower blowdown. kitchen, and cafeteria wastewater.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): N/A
Raw material(s): WA
F.S. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
31,578 gpd (✓ continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
30,000 grid ( continuous or ✓ intermittent) -Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.6 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Gaston Memorial Hospital owned by Caromont Health Inc. Pipe # 002
Mailing Address: 2525 Court Drive
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge of domestic, washdown. laundry, laboratory, non -contact cooling, boiler/cooling tower blowdown, kitchen, and cafeteria wastewater.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): WA
Raw material(s): N/A
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
148,934 gpd (✓ continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
100,000 gpd ( continuous or ✓ intermittent) -Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit add8ional pages
as necessary.
Name: Industrial Electroplating Companv
Mailing Address: 317 S. Linwood Road
Gastonia NC 28053
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge from process wastewater alkaline and chloride zinc processes
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Plating metal pans
Raw material(s): Metal parts, metals acids, caustic soda
F.6. Flow Rate.
a. Process wastewater Flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
37,265 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater Row rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
.1,525 gpd ( continuous or intermittent) 'Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Metal Finisher 40CFR413.14
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Modena Southern Dyeing Corporation
Mailing Address: 1004 Fast Lone Ave.
Gastonia. NC 28054
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharee wastewater from dye house processes.
F.S. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Dyeing threads
Raw material(s): Threads. dyes and acetic acid
F.S. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent
14,462 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
•1,075 gpd ( continuous or ✓ intermittent) *Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes [I No
b. Categories] pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
N/A
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Pona-Jan of the Piedmont. Inc.
Mailing Address: 212 Bulb Avenue
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge of domestic wastewater, washdown water, and stormwater runoff from service of Portable toilets.
F.S. Principal Product(s) and Raw Materialist). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Service to portable toilets
Raw material(s): Liquid deodorizer containing formaldehyde
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
6055 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
N/A gpd ( continuous or intermittent) 'Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g, upsets,
interference) at the treatment works in the post three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Stabilus Inc
Mailing Address: 1201 Tulip Drive
Gastonia NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge from process wastewater, wash down. cooling non -contact cooling blow down from boiler and cooling towers and air units
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Metal fabricated components
Raw material(s): Steel-1035 rod stock, steel tubing. plastic and metal internal parts
F.B. Flow Rate.
a. Process wastewater Flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
19325 gpd (✓ continuous or intermittent)
b. Non -process wastewater Flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
-8,175 gpd ( continuous or ✓ intermittent) *Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
Metal Finisher 40CFR413.17
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the StU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

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FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If mom than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Sunshine Uniform Services Inc
Mailing Address: P.O. Box 12632
Gastonia. NC 28053
FA. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharge domestic and Process wastewater from laundry process and boiler blow down.
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Industrial Laundry
Raw material(s): Water, soaps and mist. chemicals
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
29,965 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent
• 1025 gpd ( continuous or intermittent) 'Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
N/A
F.B. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treaunent works in the past three years?
❑ Yes ® No If yes, describe each episode.

a
a
a
War
QR
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Town of Ranlo
Mailing Address: 1624 Spencer Mountain Read
Gastonia NC 28054
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Discharse domestic wastewater only
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): N/A
Raw material(s): Domestic wastewater
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
180,220 gpd (✓ continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater Flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent
N/A gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.S. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.

OR
M
WE
7
to
OR
1
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Long Creek WWTP, NCO020184 Renewal Catawba River Basin
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the Information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Water Supply & Treatment Division - City of Gastonia
Mailing Address: P.O. Box 1748
Gastonia, NC 28052
FA. Industrial Processes. Describe all the industrial processes that affect or centribute to the SIU's discharge.
Water treatment.
F.6. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s). Drinking water
Raw material(s): Sodium Hvoochlonte. Fluoride. and Poly Aluminum Chloride
F.6. Flow Rate.
a. Process wastewater Flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and
whether the discharge is continuous or intermittent.
244,227 gpd ( continuous or ✓ intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
625 gpd ( continuous or ✓ intermittent) -Flow based on 25 gallons per person.
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets,
interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
AI

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Long Creek WWTP, NCO020184
Renewal
Catawba River Basin
Additional Information for NPDES Permit Application
Section B.3. Process Flow Diagram or Schematic
Process Flow Description
The Long Creek W WTP is a 16-mgd facility operated by Two Rivers Utilities which
discharges to the South Fork Catawba River. Influent wastewater enters the plant
through a 48" gravity feed sewer line and passes through coarse manual and fine
mechanical screens and a grit collector screw. Following preliminary treatment, the flow
enters the main lift station. Five influent pumps (three duty, two standby) lift the influent
flow to Manhole #1 (MH-1) and the flow is split to three primary clarifiers. The primary
clarifier effluent is combined with the RAS in MH-2 where the flow is split to two
biological treatment trains. The biological treatment trains consist of anaerobic, anoxic
and oxic basins, with internal oxic recycle pumping (one duty, one standby per train) for
denitrification. One biological treatment train has a capacity of 7-mgd and the other has a
capacity of 9-mgd. Following the biological treatment trains, flow is combined in MH-6
and routed to the denitrification basin which consists of anoxic zones for further
denitrification and oxic zones for reaeration. Flow can be diverted around the
denitrification basins. This flexibility was provided because the plant is only required to
meet a total nitrogen limit in the summer months. The intermediate pumping station
consists of three screw pumps (two duty, one standby) which lift the flow to four final
_ clarifiers. From the final clarifiers, the flow is sent to gravity anthracite filters. Eight
filter cells are used to allow filter cells to be taken out of service without impacting the
performance of the system. Flow can be diverted around the filters. Filter effluent is
disinfected in an open chlorine contact chamber by injection of chlorine solution. Sulfur
dioxide is injected into the chlorinated effluent for dechlorination. Finally, the effluent is
discharged through two three -stage static aeration devices to a 54" line, which discharges
to the South Fork Catawba River. The process flow schematics show all of the processes
of the treatment plant along with bypasses and backup power sources. The plant has
three 1,600 kW generators located at the plant entrance.

I 1 1 I 1 1 I i 1 1 1 I
I!I SCADA _ !:
ANTENNA -1""-
EMERGENCY i__ IAtloOrae •�• � �•
GENERATORS LAB /CONlTROL
BUILDING•1--�
- -----SCADA SySIEM•--•/ .�•
d
BLOWER r t.Lz__-
BLDG. M.H.
CHEMICAL`S FINAL CLARIFIERS
_ ( 3
1 r r \ M.H.y
SCR �
r u u ri nl
B
M.H. #5-L-�� 0 '� \ �. G' �, j INTERMEDIA �i
AERATION EXISTING le. \ \ LIFT PUMPS
BASINS MAIN \ •• �j .
(9 MGD) - MH
�- ❑ ��'- - M.H. $ CHLORINATION i
c _ c _ �!•I: _ _ = 0 tIF6 _ M.H. DECHLORINATION
CHLORWE #9
_ - SIPHON �,.� STATION -\__STATIC
- INF.M.H. — - ��``. AERATOR
t . / PR71lMR1f DENTTRIFICxTION
BASIN
TREATMENT -
" BACKWASH —�. •` STAGE 1
\� HOLDING \,, - STAGE 2
LAYOUT PLAN
Long Creek WWTP — Layout Plan

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Long Creek WWTP, NCO020184
Renewal
Catawba River Basin
Additional Information for NPDES Permit Application
Sludge Management Plan for
Long Creek Wastewater Treatment Plant
NPDES Permit # NCO020184
The Long Creek Wastewater Treatment Plant (WWTP) design for sludge handling consists of anaerobic
.. sludge digestion followed by land application. This plan describes the processes in place for treating
and disposing of this material.
Anaerobic Digestion:
The anaerobic digestion system consists of four heated anaerobic sludge digesters and two sludge
storage digesters, each with a volume of approximately 450,000 gallons. These anaerobic digesters
treat the primary and waste -activated sludge generated from the WWTP. On average, Two Rivers
Utilities sends approximately 50,000 gallons of raw and thickened wasted solids to these digesters each
day for treatment.
Raw sludge from the bottom of three primary clarifiers is pumped to the four primary digesters where it
is held at a temperature greater than 35°C. Wasting from the secondary clarifiers is also pumped to the
primary digesters, however these solids are first thickened in the dissolved air floatation thickener unit
located adjacent to the digesters. Following digestion in the primary digesters, solids transfer to the
holding digesters and then are pumped into the sludge storage lagoons.
The WWTP has two biosolids storage lagoons, with a combined capacity of four million gallons.
Additionally Two Rivers Utilities operates a residuals storage facility at its Resource Recovery Farm
located between Dallas and Cherryville. This facility is capable of storing an additional eight million
gallons of biosolids when application activities are hindered by inclement weather.
The Long Creek WWTP currently complies with the 503 pathogen reduction requirement for Class B
_ biosolids by a PSRP process (40 CFR Part 257 Appendix II). Pathogen reduction is demonstrated by fecal
coliform testing. Vector attraction reduction is demonstrated by a measurement of 38% volatile solids
reduction using the Van Kleeck's equation.
Land Application Program:
For beneficial reuse of these biosolids, Two Rivers Utilities utilizes land application for disposal of these
solids. Gastonia contracts with EMA Resources to perform this land application. Biosolids are land
applied to 3,041 acres of local farmland in North Carolina, in accordance with NCDENR Land Application
Permit WQ0001793 and 414 acres in South Carolina under SC DHEC Land Application of Domestic
Sludge Permit ND0084883. One hundred seventy-seven of the acres in North Carolina are on TRU
owned land at the Resource Recovery Farm and the remainder is private farmland.

Mike Templeton
Division of Water Resources— Wastewater Branch
Raleigh, NC 27699-1601
RE: NPDES Permit Renewals for Two Rivers Utilities' WWTPs included In the Lake Wylie TMDL
Long Creek Wastewater Treatment Plant (NPDES # N00020184)
Eagle Road Wastewater Treatment Plant (NPDES # NC0006033)
Crowders Creek Wastewater Treatment Plant (NPDES # NC0074268)
Dear Mr. Templeton:
The NPDES Permits for wastewater treatment plants owned by Two Rivers Utilities (TRU) are due for
renewal in 2015 [Long Creek WWTP (NC0020184) and Eagle Road WWTP (NC0006033) expire on
1/31/15 and Crowders Creek WWTP (NC0074268) expires on 8/31/151. All three TRU wastewater
facilities are part of the Lake Wylie TMDL for Total Nitrogen (TN) and Total Phosphorus (TP).
TRU has built and operated modern nutrient removal processes which have greatly reduced nutrient
loads to the Lake Wylie watershed. Through regionalization efforts by TRU, five non -nutrient removal
treatment plants have been taken out of service. Projects that will decommission three more non -
nutrient removal facilities are underway. This wastewater is or will be treated at one of TRU's nutrient
removal facilities, further reducing the nutrient loads into the Lake Wylie watershed.
To help these regionalization efforts make practical and long-term financial sense for our utility, TRU is
requesting revisions to nutrient limits at its facilities with these permit renewals.
TRU requests:
• Allocations from the decommissioned facilities (whether specifically allocated or part of the
non -point allocation) are transferred to the TRU facility that receives its wastewater (provided it
discharges to the same arm).
• Instead of the current concentration limits, we request these allocations be presented in
pounds/day mass load limits and that an aggregate / bubble limit be given to Lang Creek WWTP
id Eagle Road WWTP for Total Nitrogen (TN) and Total Phosphorus (TP).

raw
Elm
History:
no All WWTP discharges are currently included in the Lake Wylie TMDL. When the TMDL was developed,
large plants (greater than 1.0 mgd) were given a specific allocation as part of the Lake Wylie TMDL, and
an small plants (less than 1.0 mgd) were included in the non -point allocation.
sm
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FOR
0"
A summary of the decommissioned facilities is shown below:
Summary of Decommissioned Facilities
Permitted
Potential
TN
WWTP
Year
Status
Regional
to
Summer
(lb/yr)z
TP
WWTP
(mgd)
TN Limit
(lb/df
(Ib/d)
Ranlo
1998
Complete
Long Creek
0.20
10
5,164
1.7
High Shoals
2012
Complete
Long Creek
0.03
2
775
0.3
Stanley
2015
Construction
Long Creek
0.50
25
12,910
4.2
McAdenville
2016
Design
Long Creek
0.13
7
3,357
1.1
Pharr Yarns
2016
Design
Long Creek
1.0
50
25,821
8.3
Bessemer
City
2002
Complete
Crowders
Creek
1.5
75
13
Catawba
Creek
1999
Complete
Long Creek
9.0
300
38
'Calculated using permitted flow and 6.0 mg/L for the summer months
2Calculated using 6.0 mg/L in the summer (214 days) and 12.0 mg/L in the winter (151 days) —same
Best Professional Judgment (BPJ) methodology used for Eagle Road WWTP annual mass load for TN
MR3Calculated using 1.0 mg/L year round
4 Lake Wylie TMDL allocation
The City of Gastonia's Catawba Creek WWTP was decommissioned and its flow routed to the Long Creek
WWTP. No request is being made at this time for the transfer of that TMDL allocation of 300 lbs/day of
TN and 38 Ibs/day of TP. However, since the flow is treated at the Long Creek WWTP, we wish to
document the decommissioning of that facility potentially made a major contribution to the overall
nutrient reduction in the Lake Wylie watershed.
TRU and HDR staff met previously with DWR staff in Raleigh in August 2010 and August 2013 to discuss
the renewal of the NPDES permits. Meeting minutes for both meetings were recorded and submitted to
all attendees. During both of those meetings, as well as on subsequent phone conversations, the topic
of receiving "credit" in the form of a higher nutrient allocation in exchange for taking these smaller
`*' WWTPs out of service was discussed. An aggregate / bubble limit for Long Creek WWTP and Eagle Road
WWTP for TN and TP was also discussed. DWR stated that both of these requests were reasonable, met
the intent of the TMDL, and could be implemented in the next NPDES permit renewals.
am
Page 2 of 5

am
a
a
Quantitative Justification:
The Long Creek, Eagle Road, Stanley, McAdenville and Pharr Yarns wastewater treatment plants all
discharge into the South Fork Arm in the Lake Wylie TMDL. The former Ranlo WWTP and both of High
Shoals' wastewater facilities, discharged into that arm as well. Since TRU operates both the Long Creek
WWTP and Eagle Road WWTP, we are requesting an aggregate or bubble mass load limit between the
two treatment facilities for TN and TP.
While only the Long Creek WWTP and Eagle Road WWTP were given specific allocations in the TMDL,
the other -facilities were included in'the non -point nutrient allocation. If these non -specifically allocated
FM
facilities were discharging at 6 mg/L TN in the summer months and 12 mg/L TN in the winter months,
and 1 mg/L TP year-round, they would have the potential to discharge a combined total of 132 lbs/day
,M of TN and 15.5 Ibs/day of TP. Since the Long Creek WWTP is receiving the flow from these facilities, we
request that these pounds be included in the aggregate allocation for Long Creek and Eagle Road
WWTPs. The pounds are based on the limits they could potentially have received, not the higher
® concentrations that they were actually discharging.
,E, TOTAL NITROGEN:
Permitted
TMDL
Calculated Ibs/year at 6
South Fork Arm of TMDL
Flow
Allocation
mg/I summer &
'M Plant
(mgd)
(Ibs/day)
12 mg/L winter
Long Creek
16
801
413,130
Eagle Road
4.0
*
103,283
`M Ranlo
0.2
*
5,164
High Shoals
0.03
*
775
Stanley
0.5
*
12,910
MM
McAdenville
0.13
*
3,357
Pharr Yarns
1.0
*
25,821
Total:
564,439
F_"
*Included in Non -Point Allocation
Permitted
TMDL
Calculated Ibs/year at
Crowders Arm of TMDL
Flow
Allocation
6 mg/I summer &
Plant
(mgd)
(Ibs/day)
12 mg/L winter
Mw
Crowders Creek
6.0
300
154,924
Bessemer City
1.5
75
38,731
® Total:
193,655
Mm
No
Page 3 of 5
fm

"a
a
PM
TOTAL PHOSPHORUS:
ow
Permitted
TMDL
South Fork Arm of TMDL
Flow
Allocation
Calculated Ibs/day
Calculated Ibs/year at
ON, Plant
(mgd)
(Ibs/day)
at 1 mg/L
1 mg/L year-round
Long Creek
16
133
133
48,545
Eagle Road
4.0
90**
33**
12,045
Ranlo
0.2
*
1.7
621
High Shoals
0.03
*
0.25
91
Stanley
0.5
*
4.2
1,533
McAdenville
0.13
*
1.1
402
Pharr Yarns
1.0
*
8.3
3,030
Total:
182
66,266
* Included in Non -Point Allocation
**Instead of the 90 Ibs/day
allocation in the TMDL, only amount currently permitted is being requested.
Permitted
TMDL
Crowders Arm of TMDL
Flow
Allocation
Plant
(mgd)
(Ibs/day)
Crowders Creek
6.0
50
Bessemer City
1.5
13
Total:
63
F"
FOR
Request:
In summary, we request limitations for total nitrogen and total phosphorus expressed as follows:
LONG CREEK WWTP (NPDES #NC0020184) & EAGLE ROAD WWTP (NPDES #NC0006033)
Parameter
Limits
Monitoring Requirements
Monthly
Weekly
Daily
Measurement
Sample
Sample
Average
Average
Maximum
Frequency
Type
Location
Total Nitrogen
Annual Limit:
Weekly
Composite
Effluent
564,439 pounds/year'
Total Phosphorus
182
Weekly
Composite
Effluent
Ibs/dayZ
Notes:
09 1. The annual limit will be the combined sum of the monthly mass loadings from both Long Creek WWTP
(NPDES #NC0020184) and Eagle Road WWTP (NPDES #NC0006033), and all decommissioned WWTPs.
2. Monthly average limit for Total Phosphorus is for the combined total of the discharge from Long Creek
'm WWTP (NPDES #NC0020184) and Eagle Road WWTP (NPDES #NC0006033), and all decommissioned
WWTPs. This will be computed as the sum of the monthly averages in lbs/day from each discharge.
F"
Page 4 of 5
FM

0
s
ON
MP
fan
M
IM
M"
M
Im
CROWDERS CREEK WWTP (NPDES #NC0074268)
Parameter
Limits
Monitoring Requirements
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Total Nitrogen
Annual Limit:193,265
pounds/year2
Weekly
Composite
Effluent
Total Phosphorus
63 Ibs/day I
I
Weekly
Composite I
Effluent
Notes:
1. The annual limit will be the combined sum of the monthly mass loadings from both Crowders Creek
WWTP (NPDES #NC0020184) and Bessemer City WWTP.
We greatly appreciate your openness to consider these permit modifications. Once you have had a
chance to review this request, we would like to have the opportunity to discuss it further. We will
contact you to schedule a meeting in July.
Sincerely,
Matt Ber ardt
Director
Two Rivers Utilities
cc: Tom Belnick, DWR
Kathy Stecker, DWR
Larry Cummings, TRU Wastewater Treatment
Page 5 of 5
M

B.2 Topographical
Map of Long Creek
WWTP -
Permit #NC00201 S4
Facility Boundaries
Ground Water Wells
.25 mile buffer
Long Creek WWTP Outfall 001
Sewer Nodes
Structures
Air Rel Valve in Manhole
Manhole
Abandon Manhole
Proposed Manhole
SLS
Abandon SLS
Valve
Monitoring Well
Meter
b
Plug
Inverted Siphon
O
Chemical Manhole
Treatment Plant
e
Uncoded Node
Abandon Uncoded Node
Gaston County Roads
Sewer Lines
Lines
MAIN
PROPOSED MAIN
FORCE MAIN
--bra CHEMICAL LINE
SMYR
USGS Quandrangle
Maps Referenced:
N Gastonia North
W+ Mt. Holly
s
0 0.125 0.25 0.5 Miles

Influent
16 MGD
(Current daily
average = 6
MGD)
Main Lift /
Screening 1
Grit Removal
24
MGD
Long Creek WWTP — Process Flow Schematic
Primary
Clarifiers
j
W
GD
v
0
c�
F ri m e -ir CO
3�n�;'dgs RAS
5.3 MGD
6.7 MGD
Add /
A I..m
Intermediate
Pumping
Station
Treatment Trains
11.2 MGD
®x�,c Recycie
10.6 MGD
Final Clarifiers RECEIVEDIDENRIDWR
6 MGD Filters AUG - 4 2014
8
MGD Chlorine permitting Quality
6 MGD, 17Contact
16 MGD 16 MI 16 MGQ Sai
..
6 MGD 7 t +
1 8 1
)echlorination to
6 MGD 17 MGD j �� M
1 I G)
w rt v
0 Emergency Flow Diversion
To South Fork Catawba River
00
RAS WAS

6 r -W i7S eVA-cVJ a1
6'Z7 2,01V file
� 1 �I-r
Mike Templeton e G kA
Division of Water Resources - Wastewater Branch 7,/�
1601 Mail Service Center
Raleigh, NC 27699-1601
RE: NPDES Permit Renewals for Two Rivers Utilities W WTPs included in the Lake Wylie TMDL
Long Creek Wastewater Treatment Plant (NPDES # N00020184)
Eagle Road Wastewater Treatment Plant (NPDES # NC0006033)
Crowders Creek Wastewater Treatment Plant (NPDES # NC0074268)
bear Mr. Templeton:
The NPDES Permits for wastewater treatment plants owned by Two Rivers Utilities (TRU) are due for
renewal in 2015 (Long Creek WWTP (NC0020184)'and Eagle Road WWTP (NC0006033) expire on
1/31/15 and Crowders Creek WWTP (NC0074268) expires on 8/31/151. All three TRU wastewater
facilities are part of the Lake Wylie TMDL for Total Nitrogen (TN) and Total Phosphorus (TP).
TRU has built and operated modern nutrient removal processes which have greatly reduced nutrient
loads to the Lake Wylie watershed. Through reglonalization efforts by TRU, five non -nutrient removal
treatment plants have been taken out of service. Projects that will decommission three more non -
nutrient removal facilities are underway. This wastewater is or will be treated at one of TRU's nutrient
removal facilities, further reducing the nutrient loads into the Lake Wylie watershed.
To help these regionalization efforts make practical and long-term financial sense for our utility, TRU is
requesting revisions to nutrient limits at its facilities with these.permit renewals:
TRU requests:
• Allocations from the decommissioned facilities (whether specifically allocated or part of the
non -point allocation) are transferred to the TRU facility that receives its wastewater (provided It
discharges to the same arm).
• Instead of the current concentration limits, we request these allocations be presented in
pounds/day mass load limits and that an aggregate / bubble limit be given to Long Creek WWTP
nd Eagle Road WWTP forTotal.Nitrogen (TN) and Total Phosphorus (TP).

History:
All WWTP discharges are currently included in the Lake Wylie TMDL. When the TMDL was developed,
large plants (greater than 1.0 mgd) were given a specific allocation as part of the Lake Wylie TMDL, and
small plants (less than 1.0 mgd) were included in the non -point allocation.
A summary of the decommissioned facilities is shown below:
Summary of Decommissioned Facilities
Permitted
Potential
TN
WWTP
Year
Status
Regional
Summer
(Ib/yr)x
TP
WWTP
mg
( j
TN Limit
(Ib/dj3
(ib/d)
Ranlo
1998
Complete
Long Creek
0.20
10
5,164
1.7
High Shoals
2012
Complete
Long Creek
0.03
2
775
0.3
Stanley
2015
Construction
Long Creek
0.50
25
12,910
4.2
McAdenville
2016
Design
Long Creek
0.13.
7
3,357
1.1
Pharr Yarns
2016
Design
Long Creek
1.0
50
25,821
8.3
Bessemer
Cftya
2002
Complete
Crowders-
Creek
1.5
75
13
Catawba
Creek
1999
Complete
Long Creek
9.0
300
38
'Calculated using permitted flow and 6.0 mg/L for the summer months
2Calculated using 6.0 mg/L in the summer (214 days) and 12.0 mg/L in the winter (151 days) --same
Best Professional Judgment (BPJ) methodology used for Eagle Road WWTP annual mass load for TN
3Calculated using 1.0 mg/L year round
4 Lake Wylie TMDL allocation
The City of Gastonia's Catawba Creek WWTP was decommissioned and its flow routed to the Long Creek
WWTP. No request is being made at this time for the transfer of that TMDL allocation of 300 Ibs/day of
TN and 38 Ibs/day of TP. However, since the flow is treated at the Long Creek WWTP, we wish to
document the decommissioning of that facility potentially made a major contribution to the overall
nutrient reduction in the Lake Wylie watershed.
TRU and HDR staff: met previously with DWR staff in Raleigh in August 2010 and August 2013 to discuss
the renewal of the NPDES permits. Meeting minutes for both meetings were recorded and submitted to
all attendees. During both of those meetings, as well as on subsequent phone conversations, the topic
of receiving "credit" in the form of a higher nutrient allocation in exchange for taking these smaller
WWTPs out of service was discussed. An aggregate / bubble limit for Long Creek WWTP and Eagle Road
WWTP for TN and TP was also discussed. DWR stated that both of these requests were reasonable, met
the intent of the TMDL, and could be implemented in the next NPDES permit renewals.
Page 2 of 5

c
Quantitative Justification:
The Long Creek, Eagle Road, Stanley, McAdenville and Pharr Yarns wastewater treatment plants all
discharge into the South Fork Arm in the Lake Wylie TMDL. The former Ranlo WWTP and both of High
Shoals' wastewater facilities, discharged into that arm as well. Since TRU operates both the Long Creek
WWTP and Eagle Road WWTP, we are requesting an aggregate or bubble mass load limit between the
two treatment facilities for TN and TP.
While only the Long Creek WWTP and Eagle Road WWTP were given specific allocations in the TMDL,
the other -facilities were included in the non -point nutrient allocation. If these non -specifically allocated
facilities were discharging at 6 mg/L TN in the summer months and 12 mg/L TN in the winter months,
and 1 mg/L TP year-round, they would have the potential to discharge a combined total of 132 Ibs/day
of TN and 15.5 Ibs/day of TP. Since the Long Creek WWTP is receiving the flow from these facilities, we
request that these pounds be included in the aggregate allocation for Long Creek and Eagle Road
WWTPs. The pounds are based on the limits they could potentially have received, not the higher
concentrations that they were actually discharging.
TOTAL NITROGEN:
Permitted
. TMDL
Calculated Ibs/year at 6
South Fork Arm of TMDL
Flow
Allocation
mg/I summer &
Plant
(mgd)
(Ibs/day)
12 mg/I. winter
Long Creek
16
801
413,130
Eagle Road
4.0
*
103,283
Ranlo
0.2
*
5,164
High Shoals
0.03
*
775
Stanley
0.5
*
12,910
McAdenville
0.13
*
3,357
Pharr Yarns
1.0
25,821
Total:
564,439
*Included in Non -Point Allocation
Permitted
TMDL
Calculated Ibs/year at
Crowders Arm of TMDL
Flow
Allocation
6 mg/I summer &
Plant
(mgd)
(Ibs/day)
12 mg/L winter
Crowders Creek
6.0
300
154,924
Bessemer City
1.5.
75
38,731
Total:
193,655
Page 3 of 5

TOTAL PHOSPHORUS:
South Fork Arm of TMDL
Plant
Long Creek
Eagle Road
Ranlo
High Shoals
Stanley
McAdenville
Pharr Yarns
Permitted
TMDL
Flow
Allocation
Calculated Ibs/day
Calculated lbs/year at
(mgd)
(Ibs/day)
at 1 mg/L
1 mg/L year-round
16
133
133
48,545
4.0
90**
33**
12,045
0.2
*
1.7
621
0.03
*
0.25
91
0.5
*
4.2
1,533
0.13
*
1.1
402
1.0
*
8.3
3,030
Total: 182 66,266
* Included in Non -Point Allocation
**Instead of the 90 Ibs/day allocation in the TMDL, only amount currently permitted is being requested.
Permitted
TMDL
Crowders Arm of TMDL
Flow
Allocation
Plant
(mgd)
(lbs/day)
Crowders Creek
6.0
50
Bessemer City
1.5
13
Total:
63
Request:
In summary, we request limitations for total nitrogen and total phosphorus expressed as follows:
LONG CREEK WWTP (NPDES #NC0020184) & EAGLE ROAD WWTP (NPDES #NC0006033)
Parameter
Limits
Monitoring Requirements
Monthly
Weekly
Daily
Measurement
Sample
Sample
Average
Average
Maximum
Frequency
Type
Location
Total Nitrogen
Annual Limit:
Weekly
Composite
Effluent
564,439 pounds/year'
Total Phosphorus
182
Weekly
Composite
Effluent
Ibs/dayZ
Notes:
1. The annual limit will be the combined sum of the monthly mass loadings from both Long Creek WWTP
(NPDES #NC0020184) and Eagle Road WWTP (NPDES #NC0006033), and all decommissioned WWTPs.
2. Monthly average limit for Total Phosphorus is for the combined total of the discharge from Long Creek
WWTP (NPDES #NC0020184) and Eagle Road WWTP (NPDES #NC0006033), and all decommissioned
WWTPs. This will be computed as the sum of the monthly averages in Ibs/day from each discharge.
Page 4 of 5

e
CROWDERS CREEK WWTP (NPDES #NC0074268)
Parameter
Limits
Monitoring Requirements
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Total Nitrogen
Annual Limit: 193,265
oun0s/years
Weekly
Composite
Effluent
Total Phosphorus
63 Ibs/day I
Weekly
Composite I
Effluent
Notes:
I. The annual limit will be the combined sum of the monthly mass loadings from both Crowders Creek
WWTP (NPDES #NC0020184) and Bessemer City WWTP.
We greatly appreciate your openness to consider these permit modifications. Once you have had a
chance to review this request, we would like to have the opportunity to discuss it further. We will
contact you to schedule a meeting in July.
E
r ardt pow, IV
Director
Two Rivers Utilities
cc: Tom Belnick, DWR
Kathy Stecker, DWR
Larry Cummings, TRU Wastewater Treatment
Page 5 of 5

Belnick, Tom
From:
Knosby, Mary [[e-mail]]
Sent:
Wednesday, June 25, 2014 11:19 AM
To:
Templeton, Mike
Cc:
Bernhardt, Matt; Cummings, Larry ([e-mail]); Shellenbarger, David;
Belnick, Tom; Stecker, Kathy; Bailey, Erika L.
Subject:
Two Rivers Utilities --- NPDES Permit Renewals
Attachments:
Ltr M_Templeton_DWR 06-23-2014.pdf
Hi Mike,
Per our discussion this morning, on behalf of Two Rivers Utilities (TRU), I am submitting this letter regarding NPDES
permit renewals for your consideration.
The NPDES Permits for Long Creek WWTP, Eagle Road WWTP, and Crowders Creek WWTP expire in 2015 and will
begin the renewal process soon. These plants are part of the Lake Wylie TMDL for Total Nitrogen (TN) and Total
Phosphorus (TP).
Through regionalization efforts by TRU, five (5) non -nutrient removal treatment plants have been taken out of service.
Projects that will decommission three (3) more non -nutrient removal facilities are underway. This wastewater is or will be
treated at one of TRU's nutrient removal facilities, further reducing the nutrient loads into the Lake Wylie watershed.
TRU is requesting revisions to nutrient limits at its facilities with these permit renewals to provide more flexibility, and to
help the regionalization efforts make practical and long-term financial sense.
• Allocations from the decommissioned facilities (whether specifically allocated or part of the non -point allocation) -
are transferred to the TRU facility that receives its wastewater (provided it discharges to the same arm).
• Instead of the current concentration limits, we request these allocations be presented in pounds/day mass load
limits and that an aggregate / bubble limit be given to Long Creek WWTP and Eagle Road WWTP for TN and TP.
We would like to meet with your team to discuss this further, as TRU prepares their renewal applications.
Available dates for us to travel to Raleigh are:
July 14
July 21
July 22
Time is flexible.
Please let me know if you have any questions, and if one of these dates for a meeting works for DWR.
Thanks,
Mary
Mary Knosby, PE
Associate Vice -President
HDR
440 S. Church St, Suite 1000
Charlotte, NC 28202
D 704.338.6857 M 704.507.9497
Marv. Knosby(ftdrinc.com
hdrinc.com/follow-us

To: Complex Permitting Unit
Attention: Teresa Rodriquez
SOC Priority Project: No
Date: September 25, 2014
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Gaston
NPDES Permit No.: NCO020184
PART I - GENERAL INFORMATION
Facility and Address: Long Creek WWTP
City of Gastonia
PO Box 1748
Gastonia, N.C. 28053-1748
2. Date of Investigation: March 4, 2014
Physical Location
3000 Long Creek Disposal Plant Road
Dallas, NC 28034
Report Prepared By: Wes Bell, Environmental Specialist
4. Person Contacted and Telephone Number: Michael Graham/ORC [phone];
Stephanie Scheringer/Asst. Division Manager of Operations [phone]; David
Shellenbarger/Asst. Division Manager of Compliance [phone]
5. Directions to Site: From the junction of Interstate I-85 and NC Hwy. 279/New Hope Road
(Exit 20), travel west on NC Hwy. 279 for approximately 3.2 miles and turn right on Old
Spencer Mountain Road. Travel approximately 0.5 miles and bare right on Long Creek
Disposal Plant Road. The W WTP is located at the end of this road.
6. Discharge Point(s), List for all discharge Point: RECEIVEDIDENPMR
SEp 30 2014
Outfall 001
Latitude: 350 18' 37" Water Quality,
Longitude: 810 06' 50" permitting Sectior.
See USGS Map included with the renewal application for specific location of the outfall.
USGS Quad No.: F 14 SE
Receiving Stream or Affected Surface Waters: South Fork Catawba River
a. Classification: WS-V
b. River Basin and Subbasin No.: 03-08-36
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater and description of wastewater source(s) of each outfall:

Page Two
Outfall 001-16.0 MGD — domestic and industrial (16 total SIUs with 4 being CIUs). The
existing W WT facilities consist of mechanical bar screens, grit removal, influent pump
station, primary clarification (3-total), dual biological nutrient removal basins, denitrification
basin, secondary clarification (4-total), tertiary filtration (8-cells), gas chlorination, chlorine
contact chamber, gas dechlorination, flow measurement, dual static aerators, DAF unit, six
anaerobic digestors (4-primary and 2-storage), two sludge storage basins, standby power, 12
MG emergency storage basin ( converted out of service polishing pond).
b. Pretreatment Program: Approved
PART III - OTHER PERTINENT INFORMATION
Special monitoring or limitations (including toxicity) requests:
The City requests the following permit changes:
1) Total Nitrogen and Total Phosphorus limits be expressed as a single lbs/day
aggregate or bubble limit (for both Long Creek W WTP and Eagle Road W WTP —
NC0006033) and nutrient credits be applied to these permits for the NPDES facilities
that have or will soon to be connected to one of these W WTPs.
2) Reduction of the effluent monitoring frequencies for BOD, TSS, ammonia, and fecal
coliform according to the Division's criteria for exceptionally performing facilities (data
attached to renewal package).
3) Reduction of the instream monitoring requirements to once per week year-round.
4) The removal of the effluent Nickel limit and weekly monitoring frequency.
5) The removal of the quarterly ADMI color monitoring requirement.
PART IV - EVALUATION AND RECOMMENDATIONS
The W WTP appeared to be properly operated and well maintained at the time of the
inspection. The WWTP's effluent has been noted as being clear during the last several compliance
inspections. The City's Pretreatment Program is also well maintained and properly implemented.
City personnel have previously met with the Division's Permitting Staff regarding the incorporation
of nutrient limits and credits for the NPDES facilities that have or will soon to be connected to the
City's WWTPs. Mr. Larry Cummings, Division Manager of Wastewater Treatment and the listed
applicant contact, has recently retired as of August 31, 2014. Future correspondence can be made to
the attention of Mr. David Shellenbarger, Asst. Division Manager of Compliance. It is
recommended that the subject Permit be renewed followin review by the Division's Complex
Permitting Staff.
'Signature eport Preparer Date
Water Quality Regional Supervisor Dat
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