NC0044440_Permit (Issuance)_20170707

NPDES DOCUMENT :SCANNING COVER SHEET
NC0044440
Cherryville WWTP
NPDES Permit:
Document Type: ,
Permit Isssuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
July 7, 2017
This document is printed on reuse paper - ignore any
content on the resrerse side

Water Resources
ENVIRONMENTAL QUALITY
July 7, 2017
Mr. Larry Wright, Plant Supervisor
City of Cherryville
116 South Mountain Street
Cherryville, North Carolina 28021
ROY COOPER
Governor
MICHAEL S. REGAN
Secrelan'
S. JAY ZIMMERMAN
Subject: Final NPDES Permit Renewal
Permit NC0044440
Cherryville WWTP
Gaston County
Facility Class III
SIC Code 4952
Dear Mr. Wright:
Director
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).
The following changes were made to the draft permit sent to you on April 4, 2017:
• Special condition A.(5) Schedule of Compliance for Ammonia Nitrogen was changed to
add interim dates to perform ammonia nitrogen source identification, preparation of a
Corrective Action Plan and summary report of corrective actions. Mailing addresses for
DWR's Mooresville Regional Office and NPDES permitting unit were also added for
report submittal.
The final permit maintains the following significant changes identified in the letter sent on
April 4, 2017:
• The NC 2007-2014 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Commission (EMC) on November 13, 2014. The US EPA
subsequently approved the WQS revisions on April 6, 2016 with some exceptions. The NC
Division of Water Resources NPDES Permitting Unit is required to implement the new dissolved
metal standards in all permits public noticed after April 6, 2016.
State of North Carolina I Environmental Quality 1 Water Resources
1617 Mail Service Center 1 Raleigh, North Carolina 27699-1617
919 807 6300

Page 12
The new standards for most metals include acute standards. Further, the freshwater standards for
several metals are expressed as the dissolved form of the metals, and seven metals have hardness -
dependent equations. As a result, the NPDES Permitting Unit will need site -specific effluent
hardness data and instream hardness data, upstream of the discharge, for each facility monitoring
these metals in order to calculate permit limitations. Effluent and upstream hardness have been
added to this permit at a quarterly monitoring frequency. Footnote 5 was added to A. (1) Effluent
Limitations and Monitoring Requirements in Part I to require hardness sampling in conjunction
with copper sampling.
• RPA results showed that zinc and cyanide do not show reasonable potential to violate water
quality standards of the Indian Creek. Effluent monitoring requirements for zinc and cyanide
have been removed.
• Effluent limits for ammonia nitrogen have been revised based on a waste allocation model and
updated guidance on NPDES Implementation of Ammonia Criteria.
• Special Condition A. (5) Compliance Schedule for Ammonia Nitrogen has been added to the
permit which requires permittee to identify sources of ammonia nitrogen in the effluent,
preparation of a corrective action plan and submit a report summarizing the actions taken in
accordance with the corrective action plan before achieving compliance with revised summer and
winter ammonia nitrogen limits in condition A. (2) by May 1, 2020. Effluent limitations and
monitoring requirements from the effective date of the permit till April 30, 2020 are in condition
A. (1).
• 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 (6)]
For information on eDMR, registering for eDMR and obtaining an eDMR user account, please
visit the following web page: http://deq.nc.gov/about/divisions/water-resources/edmr.
For more information on EPA's final NPDES Electronic Reporting Rule, please visit the
following web site:
• http://www2.epa.gov/compliance/final-national pollutant-discharge-elimination-system-npdes-
electronic-reporting-ruleInclude DissMetal Cover Letter insert if applicable
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

Page 13
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or any other Federal, State, or Local governmental permits that may be required.
If you have any questions concerning this permit, please contact Trupti Desai at [phone]
or via email at [e-mail].
Sincerely,
a
r : S. Jay Zimmerman, P.G.
Director, Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
DWR/Mooresville Regional Office / Water Quality / Corey Basinger
Ecopy: US EPA Region 4
DWR/Aquatic Toxicology Branch/Susan Meadows

Permit NC0044440
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 Cherryville
is hereby authorized to discharge wastewater from a facility located at the
Cherryville Wastewater Treatment Plant
736 Tot Dellinger Rd.
Cherryville, NC
Gaston County
to receiving waters designated as the Indian Creek 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 August 1, 2017.
This permit and authorization to discharge shall expire at midnight on July 31, 2020.
Signed this day July 7, 2017.
S. Jay Zimme an, P.G., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 10

Permit NC0044440
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.
City of Cherryville is hereby authorized to:
1. Continue to operate an existing 2.0 MGD wastewater treatment plant consisting of the following treatment units:
• Bar Screen
• Grit Removal
• Dual Oxidation Ditches
• Dual Secondary Clarifiers
• Chlorination/Dechlorination System
• Flow Measurement
• Cascade Aeration
• Aerated Sludge Holding Tank
• Sludge Storage Lagoon
Facility is located at the Cherryville Wastewater Treatment Plant on 736 Tot Dellinger Rd., Cherryville,
Gaston County; and
2. Discharge from said treatment works at the location specified on the attached map into the Indian Creek, classified
C waters in the Catawba River Basin.
Page 2 of 10

Permit NC0044440
PART
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B
.0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of the permit and lasting until April 30, 2020, the Permittee is
authorized to discharge treated municipal wastewater from outfall 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
-
; MONITORING REQUIREMENTS
LIMITS
EFFLUENT :
CHARACTERISTICS
Monthly
Average
, Weekly ,
Average -
Daily
Maximum
. _
Measurement
Frequency
Sample
Type :
Sample
Location
Flow
2.0 MGD
Continuous
Recording
E or I
BOD, 5-day, 20° C 3
30.0 mg/1
45.0 mg/1
3/Week
Composite
E & I
Total Suspended Solids (TSS) 3
30.0 mg/1
45.0 mg/1
3/Week
Composite
E & I
NH3 as N (April 1 - October 31)
17.0 mg/1
35.0 mg/1
Weekly
Composite
E
NH3 as N (November 1 - March 31)
Weekly
Composite
E
Dissolved Oxygen (DO)
Not less than 6.0 mg/1 daily average
3/Week
Grab
E
Fecal Coliform
(Geometric mean)
200/100 ml
400/100m1
3/Week
Grab
E
pH
Not more than 9.0 S.U. nor less than
6.0 S.U.
3/Week
Grab
E
Total Residual Chlorine 4
28 µg/1
3/Week
Grab
E
Temperature, °C
3/Week
Grab
E
Total Nitrogen (TN)
Monitor and Report, mg/1
Monthly
Composite
E
Total Phosphorus •(TP)
Monitor and Report, mg/1
Monthly
Composite
E
Total Coppers (µg/1)
Quarterly
Composite
E
Hardness —Total as
[CaCO3 or (Ca + Mg)] 5 (mg/1)
Quarterly
Composite
E
Hardness —Total as
[CaCO3 or (Ca + Mg)] 5 (mg/1)
Quarterly
Grab
U
Dissolved Oxygen
Variable
Grab
U,D
Temperatures
Variable
Grab
U,D
Chronic Toxicity?
Quarterly
Composite
E
Effluent Pollutant Scan
Monitor and Report
Footnote 8
Footnote 8
E
Notes
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See
Special Condition A (6).
2. E = Effluent, I = Influent, U = Upstream at least 100 feet upstream from the outfall, D = Downstream at NCSR 1002.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
4. The Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with the permit. However, the
Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field
certified), even if these values fall below 50 µg/1.
5. Sampling for copper shall coincide with sampling for hardness.
6. Variable is defined as follows: Samples collected three times per week during June 1 through September 30 and once per week
October 1 through May 31.
7. Chronic Toxicity (Ceriodaphnia) P/F @ 34%: March, June, September and December [See Condition A. (3)].
8. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [See Condition A. (4)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 10

Permit NC0044440 •
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B
.0400 et seq., 02B .0500 et seq.]
During the period beginning on May 1, 2020 and lasting until expiration, the Permittee is authorized to discharge
treated municipal wastewater from outfall 001. Such discharges shall be limited and monitored' by the Permittee as
specified below:
LIMITS
MONITORING REQUIREMENTS
EFFLUENT
Monthly
Average
Weekly
Average
Daily ,
Maxlinum :
Measurement
Frequency
Sample.'
Type:
Sample
LocationZ
CHARACTERISTICS
Flow
2.0 MGD
Continuous
Recording
E or I
BOD, 5-day, 20° C 3
30.0 mg/1
45.0 mg/1
3/Week
Composite
E & I
Total Suspended Solids (TSS) 3
30.0 mg/1
45.0 mg/1
3/Week
Composite
E & I
NH3 as N (April 1 - October 31)
2.5 mg/1
7.5mg/1
Weekly
Composite
E
NH3 as N (November 1 - March 31)
10 mg/1
30 mg/1
Weekly
Composite
E
Dissolved Oxygen (DO)
Not less than 6.0 mg/1 daily average
3/Week
Grab
E
Fecal Coliform
(Geometric mean)
200/100 ml
400/100m1
3/Week
Grab
E
pH
Not more than 9.0 S.U. nor less than
6.OS.U.
3/Week
Grab
E
Total Residual Chlorine '
28 µg/1
3/Week
Grab
E
Temperature, °C
3/Week
Grab
E
Total Nitrogen (TN)
Monitor and Report, mg/1
Monthly
Composite
E
Total Phosphorus (TP)
Monitor and Report, mg/1
Monthly
Composite
E
Total Coppers (µg/l)
Quarterly
Composite
E
Hardness —Total as
[CaCO3 or (Ca + Mg)] 5 (mg/1)
Quarterly
Composite
E
Hardness —Total as
[CaCO3 or (Ca + Mg)] 5 (mg/1)
Quarterly
Grab
U
Dissolved Oxygen
Variable
Grab
U,D
Temperature6
Variable
Grab
U,D
Chronic Toxicity?
Quarterly
Composite
E
Effluent Pollutant Scan
Monitor and Report
Footnote 8
Footnote 8
E
Notes
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See
Special Condition A (6).
2. E = Effluent, I = Influent, U = Upstream at least 100 feet upstream from the outfall, D = Downstream at NCSR 1002.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
4. The Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with the permit. However, the
Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field
certified), even if these values fall below 50 µg/1.
5. Sampling for copper shall coincide with sampling for hardness.
6. Variable is defined as follows: Samples collected three times per week during June 1 through September 30 and once per week
October 1 through May 31.
7. Chronic Toxicity (Ceriodaphnia) P/F @ 34%: March, June, September and December [See Condition A. (3)].
9. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [See Condition A. (4)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4of10

Permit NC0044440
A. (3) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY) [15A NCAC 02B .0200
et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 34%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or
"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or subsequent
versions. The tests will be performed during the months of March, June, September and December. These
months signify the first month of each three-month toxicity testing quarter assigned to the facility. Effluent sampling
for this testing must be obtained during representative effluent discharge and shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the
pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 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, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the
permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility
name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the
comment area of the form. The report shall be submitted to the Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month. Assessment of toxicity compliance is based on the toxicity testing quarter, which
is the three month time interval that begins on the first day of the month in which toxicity testing is required by this
permit and continues until the final day of the third month. •
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include
alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid
Page 5 of 10

Permit NC0044440 -
test and will require immediate follow-up testing to be completed no later than the last day of the month following the
month of the initial monitoring.
A. (4) EFFLUENT POLLUTANT SCAN (Municipal POTWs) [G.S. 143-215.1(b)]
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan
must be performed in each of the following years: 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)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate
Nitrite
ICetdahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (Method 1631E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrotein
Acrylonrtriile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethyl vinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
C0610
50060
00300
00620
00615
00625
00556
C0665
70295
00900
01097
01002
01012
01027
01034
01042
01051
COMER
01067
01147
01077
01059
01092
00720
32730
34210
34215
34030
32104
32102
34301
34306
85811
34576
32106
32101
34496
1,2-lichloroethane
Trans-1,2-dichloroethytene
1,1-dichtoroethylene
1,2-dichloropropane
1,3-dichtoropropyiene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachtoroethane
Tetrachtoroethylene
Toluene
1,1,1-trichtoroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-c eso
2-chtorophenol
2,4-dichtorophenol
2,4-d1methyiphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Aoenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzoftuoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
32103
34546
34501
34541
77163
34371
34413
34418
34423
81549
34475
34010
34506
34511
39180
39175
34452
34586
34601
34606
34657
34616
34591
34646
39032
34694
34621
34205
34200
CO220
39120
34526
34247
34230
34521
34242
Page 6 of 10
Bis (2-chloroethoxy) methane
Bis (2-chloroethyi) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chtoronaphtha&ene
4-chtorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichtorobenzene
3,3-dichtorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Ftuoranthene
Ftuorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachtoroethane
Indeno(1,2,3.cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-riitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichtorobenzene
34278
34273
34283
39100
34636
34292
34581
34641
34320
39110
34596
34556
34536
34566
34571
34631
34336
34341
34611
C0626
34346
C0376
34381
C0700
39702
34386
34396
34403
34408
34696
34447
34428
34438
34433
34461
34469
34551

Permit NC0044440
Reporting. Test results shall be reported electronically via eDMR or on DWR Form — DMR PPA-1 (or on a form
approved by the Director) by December 31 St of each designated sampling year. The report shall be submitted to the
following address:
NC DEQ / DWR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal facilities
that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional toxicity testing
requirements specified in Federal Regulation 40 CFR 122.21(j)(5) and EPA Municipal Application Form 2A. The US
EPA requires four (4) toxicity tests for a test organism other than the test species currently required in this permit.
The second 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. The second species tests must be multiple concentration (5 concentrations plus the control). These tests
shall be performed for acute or chronic toxicity, whichever is specified in this permit. POTWs performing NPDES
chronic Ceriodaphnia testing should perform chronic Fathead minnow testing. POTWs performing NPDES acute
Fathead Minnow testing should perform acute Ceriodaphnia testing. POTWs performing NPDES chronic Mysid
shrimp testing should perform chronic Silverside Minnow testing.
The second species toxicity test results shall be filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1623
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. (5) SCHEDULE OF COMPLIANCE FOR AMMONIA NITROGEN [G.S. 143-215.1(B)]
1. The permittee shall perform source identification of ammonia nitrogen in the effluent by February 1,
2018.
2. The permittee shall submit to the Division of Water Resources a Corrective Action Plan summarizing the
actions to be taken to achieve compliance with ammonia nitrogen and schedule of activities to implement
this plan by February 1, 2019.
3. The permittee shall submit a report to the Division summarizing the actions taken in accordance with the
corrective action plan by February 1, 2020.
4. Achieve compliance with Ammonia nitrogen limits (See condition A. (2) ) by May 1, 2020.
All reports required in this section shall be submitted to:
NCDEQ/ Division of Water Resources
Water Quality Regional Operations
610 East Center Avenue, Suite 310
Mooresville, NC 28115
NCDEQ/Division of Water Resources
NPDES Complex Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Upon approval of the Corrective Action Plan by the Division, the report and actions become an enforceable part of
this permit. Any modifications to the schedule shall be requested to the Division at least ninety (90) days before the
deadline. Modifications to the schedule in excess of four months will be subject to public notice.
Page 7 of 10

Permit NC0044440
A. (6) ELECTRONIC REPORTING OF MONITORING REPORTS [G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports. The
final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard
Conditions for NPDES Permits):
* Section B. (11.) Signatory Requirements
* Section D. (2.) Reporting
* Section D. (6.) Records Retention
* Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)]
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) intemet 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 intemet. Until such time that the state's eDMR application is compliant with EPA's Cross -
Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring
data to the state electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically
located in an area where less than 10 percent of the households have broadband access, then a temporary waiver from
the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on
paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be
submitted to the mailing address above. See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the
permit or in the case of a new facility, on the last day of the month following the commencement of discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring data
and reports, when applicable:
* Sewer Overflow/Bypass Event Reports;
* Pretreatment Program Annual Reports; and
* Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver from
Electronic Reporting" section below).
Page 8 of 10

Permit NC0044440
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time of each electronic
submission. The permittee should use the EPA's website resources to identify the initial recipient for the electronic
submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or the state
authorized by EPA to implement the NPDES program) that is the designated entity for receiving electronic NPDES
data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of
electronic submission and for each state. Instructions on how to access and use the appropriate electronic reporting
tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at:
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 permittees with an approved reporting waiver request may submit monitoring data and reports on paper to the
Division for the period that the approved reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the following web
page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)]
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:
"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 fmes and imprisonment for knowing violations."
5. Records Retention [Supplements Section D. (6.)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records
or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended
by request of the Director at any time [40 CFR 122.41].
Page 9 of 10

Permit NC0044440 •
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CHERRYVILLE WWTP — NC0044440
City of Cherryville — Gaston County
Receiving Stream; Indian Creek Stream Class: C
Drainage Basin: Catawba River Basin Sub -Basin: 03-08-35
Permitted Flow: 2.0 MGD HUC: 03050102
State Grid/USGS Quad: F13NE / Lincolnton W, N.C.
N
Facility Location (Not to scale)
Latitude 35° 25' 02" N Longitude 81° 21' 44" W
Page 10of10

PUBLIC NOTICE
North Carolina
Environmental
Management
Commission/
NPDES Unit
1617 Mail Service
Center, Raleigh, NC
27699-1617
Notice of Intent
to Issue a
NPDES
Wastewater
Permit
The Nnrth r'arolina Envi-
ronmental kranagement
Commission proposes to
issue a NPDES waste-
water discharge permit to
the person(s) listed below.
Written comments regard-
ing the proposed permit
will be accepted until 30
days after the publish date
of this notice. The Director
of the NC Division of Water
Resources (DWR) may
hold a public hearing
should there be a signifi-
cant degree of public inter-
est. Please mail comments
and/or information re-
quests to DWR at the
above address. Interested
persons may visit the DWR
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
website: bttp://dea.nc.gov/
about/divisions/water-
resaxoeshwter-resources-per-
mits/wastewater-
branch/npdes-wastewatedLg
ublic-notices,or by calling
[phone].
The City of Cherryville has
applied for renewal of per-
mit NC0044440 for the
Cherryville WWTP in Gas-
ton County. This permitted
discharge is treated do-
mestic wastewater to In-
dian Creek in the Catawba
River Basin.
1C-May 10, 2017.
Text GS84595 to 56654
AFFIDAVIT OF INSERTION OF ADVERTISEMENT
The Gaston Gazette
Gastonia, N.C.
Gaston County
The Gaston Gazette does certify that the advertisement for:
NPDES Wastewater Permit: Cherryville WWTP, NC0044440
Measuring 7.50 inches appeared in The Gaston Gazette, a newspaper published in
Gaston County, Gastonia, N.C., in issue(s):
05/10/2017.
Name of Account: NCDENR-Division of Water Resources - Gazette
Order Number: 54584595
Ad Number: 54707822
Sworn to, and subscribed before me this 10 th day of May, 2017.
1/4i
PU6LIC z= ,
J _ f
q N D Co\\\�`z
LisZyble, Notary Public
My Commission Expires April 25, 2022

DEPARTMENT OF ENVIRIONMENTAL QUALITY / DIVISION OF WATER RESOURCES
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
City of Cherryville WWTP
NC0044440
Facility Information
Applicant/Facility Name:
City of Cherryville Wastewater Treatment Plant
Applicant Address:
116 South Mountain Street, Cherryville, NC 28021
Facility Address:
736 Tot Dellinger Road, Cherryville, NC 28021
Permitted Flow:
2.0 MGD
Type of Waste:
100 %Domestic
Classification:
III
Permit Status:
Renewal
County
Gaston
Miscellaneous
Receiving Stream:
Indian Creek
Drainage Basin
Catawba
Stream Classification:
C
Sub -basin:
03-08-35
303(d) Listed?
No
HUC:
03050102
Drainage Area (mi2):
46.4
State Grid / USGS Quad:
F 13NE / Lincolnton W, NC
Summer 7Q10 (cfs)
6.1
Latitude:
35° 25' 02" N
Winter 7Q10 (cfs)
16
Longitude:
81° 21' 44" W
30Q2 (cfs)
-
Regional Office:
Mooresville
Average Flow (cfs):
58
Permit Writer:
Trupti Desai
IWC (%):
34
Date:
4/4/2017
I. SUMMARY
The City of Cherryville is requesting renewal of the Cherryville WWTP NPDES Permit. The facility is a major
municipal treatment plant with a design capacity of 2.0 MGD. The plant located in Gaston County serves an
estimated population of 5700. The average daily flow rate ranged from 0.46 MGD in 2012 to 0.57 MGD in 2014.
The Cherryville WWTP consists of bar screen, grit chamber, oxidation ditches, clarifiers, chlorine contact
chamber, cascade aeration system, sludge holding tank and sludge storage lagoon. The treated wastewater is
discharged to the Indian Creek in the Catawba River Basin. The city has a separate sewer system and it is
collecting 100% domestic wastewater.
II. RECEIVING STREAM
The Indian Creek in Catawba River Basin is classified as C waters in South Fork Catawba watershed, HUC
03050102. It is in sub -basin 03-08-35 and not listed for any impairment in 303(d) list published in 2016.
III. DATA REVIEW AND VERIFICATION OF EXISTING CONDITIONS
A. DMR Review
DMRs were reviewed for the period of January, 2012 till December, 2016. The effluent data are summarized in
Table 1.
Table 1. Data Summ
Parameter
Units
Average
Max
Min
Flow
MGD
0.54
1.53
0.12
BOD
mg/1
5.62
56
< 2
DO
mg/1
9.41
13.9
6.1
NH3N
mg/1
1.45
35
0.0
TSS
mg/1
5.32
75
0.0
pH
S.U.
6.61
7.8
6
Page I of 4

Parameter
Units
Average
Max
Min
Temperature
°C
17.64
29
6
TRC
µg/1
19.78
78
0.0
TN
mg/1
8.03
59
0.42
TP
mg/1
2.30
7
0.23
Fecal Coliform
#/100 ml
45
2420
0.0
Copper
µg/1
6.69
11
< 5
Cyanide
µgn
< 0.01
< 0.01
0.0
Zinc
41
0.048
0.082
< 0.02
B. Compliance History
The compliance history from January, 2012 to December, 2016 was reviewed. The facility received three
notices of violations (NOV) during this period. The weekly geometric mean of fecal coliform exceeded the
permit limit in February, 2012 and an enforcement case was opened for this violation in July, 2012. The facility
also received a NOV in February, 2015 for exceeding weekly geometrical mean for fecal coliform.
Compliance inspections were conducted at the facility in January, 2012 and December, 2014 by the Mooresville
Regional Office. The facility was reported non -compliant with the requirements of the NPDES permit in both
inspection reports. The regional staff reported issues with mechanical bar screens and discrepancies in data
reported on DMRs in 2012. During the compliance inspection in 2014, the Mooresville regional staff again
reported compliance issues with bar screen which was rusted and not operational for years. The compliance
inspection report in 2014 also reported that all pumps in influent pump station were not operable.
C. Mercury Evaluation
The permittee is required to monitor mercury as a part of priority pollutant analysis (PPA) using 1631E EPA
method. However, the permittee used method 245.1 for the mercury analysis. As a result, mercury evaluation
was not conducted as per TMDL guidance due to lack of low level mercury data. The permittee has been
informed to use this method for mercury evaluation in future PPAs to have data for mercury evaluation. Since
the facility is currently treating the domestic wastewater only, sources of mercury in the wastewater will be
limited and the concentration of mercury in the treated effluent will not be affecting the water quality standards
of the Indian Creek. Effluent limitation and monitoring requirements are not added for this parameter at this
time.
D. Reasonable Potential Analysis (RPA)
With the approval of Triennial Review (2007-2014) of the NC Water Quality Standard (WQS) by the NC
Environmental Management Committee (EMC) in 2014 and US -EPA (with some exclusions) on April 6,
2016, NPDES Permitting Unit of the NC Division of Water Resources is required to implement the new
dissolved metal standards in all permits public noticed after April 6, 2016.
A reasonable potential analysis using the updated NC WQS was conducted on effluent toxicant data collected
between January, 2012 and December, 2016. Based on this analysis, the following permitting actions are
proposed for this permit:
• Monitoring Only. Copper will receive a monitor -only requirement since it did not demonstrate
reasonable potential to exceed applicable water quality standards/criteria, but the maximum predicted
concentration was >50% of the allowable concentration.
• 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: Cyanide and Zinc.
A spreadsheet of the RPA results is attached to this Fact Sheet.
Page 2 of 4

E. Priority Pollutant Analysis
The facility had performed three priority pollutant analysis and their results were included in the permit renewal
application. Copper, zinc and nickel level were found above the detection level in these PPAs. Reasonable
potential analysis has already been conducted for copper and zinc using the data from DMRs. (Please see D.
Reasonable Potential Analysis for more details). Nickel was considered as a non -detected parameter due to
limited data set (n<9) and just one incidence of detection below the water quality standard. All other priority
pollutants were below detection level.
F. Aquatic Toxicity Testing
Permit holder is required to perform quarterly Whole Effluent Toxicity (WET) test using Ceroidaphnia
Dubia at the effluent concentration of 34%. Total 18 WET tests were conducted from January, 2012 to
December 2016. The facility had passed 17 out of 18 tests. It failed the test conducted in December, 2013
and received a NOV in February, 2014 for this violation. However, it passed two WET tests conducted
at 68% effluent concentration in January and February, 2014. The facility also passed 4 second species
aquatic toxicity tests.
G. Instream Monitoring
The permittee conducts instream monitoring for temperature and dissolved oxygen at designated points
upstream and downstream of outfall 001 in the Indian Creek. The upstream and downstream sample results
from January 2012 to December, 2017 were reviewed and compared to evaluate the impact of the effluent on the
water quality of the Indian Creek. The dissolved oxygen level remained above 6.5 mg/1 throughout the year.
Discharge from the facility did not have any impact on DO or temperature of the stream. The facility will
continue instream monitoring requirements as defined in the permit.
IV. COMPLIANCE SCHEDULE
The permittee is required to limit ammonia nitrogen concentration in the effluent according to an updated
NPDES permitting guidance for NPDES Implementation of Ammonia Criteria. The new limits for
summer and winter were calculated using a waste load allocation model. The evaluation uses ammonia
criteria of 1.0 mg/1 for summer and 1.8 mg/1 for winter and assumes background concentration of 0.22
mg/1. These limits were discussed with the permittee and a schedule was prepared to achieve compliance
with ammonia nitrogen by May 1, 2020. (See condition A. (5)). Interim effluent limitation and
monitoring requirements were added in the permit from the period beginning on the effective date of
permit and lasting till April 30, 2020. (See conditions A. (2) and A. (3))
IV. LIMITS AND MONITORING REQUIREMENTS
Current conditions, as well as the basis for the limits are summarized in Table 3.
Table 3. Current Conditions and Proposed Chances
•
Parameter
Current
Limit/Condition
Change
from
P.re nous:,
`Permit p.
Basis for Condition/ Change
.:.
Monthly
Average.
.Weekly
Average
Dail y
Maximum • ,_
Flow
2.00 MGD
No Change
15A 2B .0505
BOD, 5-day, 20°
30.0 mg/1
45.0 mg/1
No Change
Secondary treatment standards/40
CFR 133 / 15A 2B .0406
TSS
30.0 mg/1
45.0 mg/1
No Change
Secondary treatment standards/40
CFR 133 / 15A 2B .0406
NH3-N
(April 1— October 31)
17.0 mg/1
35.0 mg/1
2.5 mg/1
Monthly
Ave. and
7.5 mg/1
Weekly
Ave. limit
Based on a waste load allocation
and updated guidance on NPDES
implementation of Ammonia
criteria
NH3-N
(Nov. 1 — March 31)
Monitoring only
10 mg/1
Monthly
Ave and 30
Page 3 of 4

mg/1
Weekly
Ave. limit
DO
6 mg/1
No Change
For protection of water quality
Fecal Coliform
(Geometric mean)
200/100 ml
400/100m1
No Change
State WQ standards, 15A 2B .0200
pH
Between 6.0 and 9.0 S.U.
No Change
State WQ standards, 15A 2B .0200
Total Residual Chlorine
28 µg/1
No Change
Maximum daily limit to protect
acute toxicity
Total Nitrogen/Total
Phosphorus
Monitoring only
No Change
15A 02B .0508
Total Copper
Monitoring only
No Change
Based on RPA results
Total Zinc and Cyanide
Monitoring only
Removed
monitoring
Based on RPA results
Hardness —Total as
[CaCO3 or (Ca + Mg)]
No Monitoring
Added
quarterly
monitoring
of effluent
and
upstream
hardness
Revised water quality standards
and EPA's guidelines on hardness
dependent metals
Effluent Pollutant Scan
3 Times during the permit cycle
No Change
40 CFR 122
VI. OTHER PROPOSED CHANGES
To meet new federal regulations for electronic reporting, Special Condition A. (6) has been added describing
requirements for submittal of electronic DMRs.
VII. PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: 4/4/2017
Permit Scheduled to Issue (tentative): 5/29/2017
VI. STATE CONTACT INFORMATION
If you have any questions on any of the above information or on the attached permit, please contact
Trupti Desai at [phone] or [e-mail].
Copies of the following are attached to provide further information on the permit development:
• Draft permit
• Reasonable Potential Analysis
• Hardness dependent metals implementation fact sheet
Page 4 of 4

NC DIVISION OF WATER RESOURCES
NPDES Implementation of Instream Dissolved Metals Criteria
The NC 2007-2014 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Committee (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016 with some exceptions. All permits public noticed by the
NC Division of Water Resources NPDES Permitting Unit after April 6, 2016 shall include the
implementation of the approved 2007-2014 Triennial Review Rules for freshwater and saltwater water
quality criteria.
Table 1. NC Dissolved Metals Water Ouality Criteria/Aauatic Life Protection
Parameter
Acute FW, ug/1
(Dissolved)
Chronic FW, ug/1
(Dissolved)
Acute SW, ug/1
(Dissolved)
Chronic SW, ug/1
(Dissolved)
Arsenic
340
150
69
36
Beryllium
65
6.5
---
---
Cadmium
Calculation
Calculation
40
8.8
Chromium III
Calculation
Calculation
---
---
Chromium VI
16
11
1100
50
Copper
Calculation
Calculation
4.8
3.1
Lead
Calculation
Calculation
210
8.1
Nickel
Calculation
Calculation
74
8.2
Silver
Calculation
0.06
1.9
0.1
Zinc
Calculation
Calculation
90
81
Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. Calculation = Hardness dependent criteria
3. Only the aquatic life criteria listed above are in dissolved form. Mercury and selenium criteria
have been retained as Total Metals criteria due to bioaccumulative concerns. It is still necessary
to evaluate total recoverable criteria for human health. NC has also retained the existing toxic
criteria listed in 15A NCAC 2B.0200 (e.g., arsenic at 10 ug/1 for human health protection),
cyanide, fluoride.
Table 2. Dissolved Freshwater Standards for Hardness -Dependent Metals
The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)
Metal
NC Dissolved Standard, ug/1
Cadmium, Acute
{1.136672-[In hardness](0.041838)} • e^{0.9151 [In hardness]-3.1485}
Cadmium, Acute
Trout waters
{ 1.136672-[In hardness](0.041838)} • e^{0.9151 [In hardness]-3.6236}
Cadmium, Chronic
{1.101672-[In hardness](0.041838)} • e^{0.7998[ln hardness]-4.4451}
Chromium III, Acute
0.316 • e^{0.8190[In hardness]+3.7256}
Chromium
III,
0.860 • e^{0.8190[1n hardness]+0.6848}
Chronic
Copper, Acute
0.960 • e^{0.9422[In hardness]-1.700}
Copper, Chronic
0.960 • e^{0.8545[In hardness]-1.702}
Lead, Acute
{1.46203-[ln hardness](0.145712)} • e^{1.273[In hardness]-1.460}
Lead, Chronic
{1.46203-[ln hardness](0.145712)} • e^{1.273[In hardness]-4.705}
Page 1 of 4

Nickel, Acute
0.998 • e1{0.8460[in hardness]+2.255}
Nickel, Chronic
0.997 • e^{0.8460[in hardness]+0.0584}
Silver, Acute
0.85 • e^{1.72[In hardness]-6.59}
Silver, Chronic
Not applicable
Zinc, Acute
0.978 • e^{0.8473[In hardness]+0.884}
Zinc, Chronic
0.986 • e^{0.8473[In hardness]+0.884}
RPA Permitting Guidance/WOBELs for Hardness -Dependent Metals - Freshwater
The Reasonable Potential Analysis (RPA) is designed to calculate the allowable instream concentrations
for permit limitations. Limitations are required based upon a showing of "reasonable potential" to exceed
water quality standards. If monitoring for a particular pollutant indicates that the pollutant is not present
(i.e. consistently below detection level), then the Division may remove the monitoring requirement in the
reissued permit.
1. To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the
following information:
• Critical low flow of the receiving stream, 7Q10 (the spreadsheet automatically calculates
the 1Q10 using the formula 1Q10 = 0.843 (7Q10) 0.993)
• The mean annual receiving stream flow (QA), for carcinogen comparisons against HH
criteria
• The minimum average flow over 30 consecutive days that has an average recurrence of
once in two years (30Q2) in the receiving stream, for comparisons against aesthetic
standards
• effluent hardness and upstream hardness, site -specific data is preferred
• Permitted flow
• Receiving stream classification
2. The chronic Aquatic Life water quality criteria is converted from total recoverable metal at lab
conditions to dissolved lab conditions for the following metals: cadmium, copper, lead, nickel,
zinc, and trivalent chromium. EPA default partition coefficients, or site -specific translators
developed using federally approved methodology, are used in the RPA spreadsheet to convert the
dissolved lab conditions to a total recoverable metal at ambient conditions.
3. The acute Aquatic Life water quality criteria is converted from total recoverable metal at lab
conditions to dissolved lab conditions for the following metals: cadmium, copper, lead, nickel,
zinc, silver and trivalent chromium. EPA default partition coefficients, or site -specific translators
developed using federally approved methodology, are used in the RPA spreadsheet to convert the
dissolved lab conditions to a total recoverable metal at ambient conditions.
4. For criteria that are hardness dependent, site -specific hardness data (effluent and upstream) is best
to evaluate chronic and acute concentrations. The permit writer will first review DMR's, Effluent
Pollutant Scans, and Toxicity Test results for any hardness data and then contact the Permittee to
see if any additional data is available for instream hardness values, upstream of the discharge.
If no hardness data is available, the permit writer may choose to do an initial evaluation using a
default hardness of 25 mg/L and total suspended solids (TSS) of 10 mg/L to see if the permittee is
impacted. Minimum and maximum limits on the hardness value used for water quality
calculations are 25 mg/L and 400 mg/L respectively. The minimum TSS value used for EPA
partition coefficients is 10 mg/L.
Page 2 of 4

If the use of a default hardness value results in a hardness -dependent metal showing reasonable
potential to violate water quality criteria the permit writer should contact the Permittee and
request 5 site -specific effluent and upstream hardness samples.
The overall hardness value used in the water quality calculations is calculated as follows:
Combined Hardness (chronic)
= (Permitted Flow*Avg. Effluent Hardness) x (7010 S*Avg. Upstream Hardness)
(Permitted flow + 7Q10 S)
The Combined Hardness for acute is the same but the calculation uses the 1Q10 flow.
5. EPA default partition coefficients or the "Fraction Dissolved" converts the value for dissolved
metal at laboratory conditions to total recoverable metal at in -stream ambient conditions. This
factor is calculated using the linear partition coefficients found in The Metals Translator:
Guidance for Calculating a Total Recoverable Permit Limit from a Dissolved Criterion (EPA
823-B-96-007, June 1996) and the equation:
Cdiss = 1
Ctotal 1 + { [Kpo] [ss")] [101 }
Where: ss = in -stream suspended solids concentration [mg/1], minimum of 10 mg/L used
Kpo and a = constants that express the equilibrium relationship between dissolved and
adsorbed forms of metals. A list of constants used for each hardness -dependent metal can
also be found in the RPA program under a sheet labeled DPCs.
6. The dissolved hardness -dependent metals calculations are divided by the default partition
coefficients (or translators) to obtain a Total Recoverable Metal at ambient conditions. Dissolved
metals that do not have translators or default partition coefficients are divided by one. All other
standards (ICI, WS, non -hardness dependent metals) are automatically shown in Table 2 of the
RPA spreadsheet when the program is initiated.
7. The standards, criteria, and calculated Total Recoverable metals listed in Table 2 of the RPA
spreadsheet are inserted into a mass balance equation to determine the total allowable
concentration (permit limits) for each pollutant using the following equation:
Ca = (s7Q10 + Ow) (Cwqs) — (s7Q10) (Cb)
Qw
Where: Ca = allowable effluent concentration (gg/L or mg/L)
Cwqs = NC Water Quality Standard or federal criteria
Cb = background concentration (assume zero for all toxicants except NH3)*
Qw = permitted effluent flow
S7Q 10 = summer low flow used to protect aquatic life from chronic toxicity and human
health through the consumption of water, fish, and shellfish from noncarcinogens
* Discussions are on -going with EPA on how best to address background concentrations
Flows other than S7Q 10 may be incorporated as applicable:
1Q10 = used in the equation to protect aquatic life from acute toxicity
QA = used in the equation to protect human health through the consumption of water, fish,
and shellfish from carcinogens
30Q2 = used in the equation to protect aesthetic quality
The total allowable concentration (permit limits) are shown on the "RPA Sheet" in the RPA
spreadsheet.
Page 3 of 4

8. Effluent toxicant data is entered into the "Data Sheet." of the RPA spreadsheet which uses
statistics to estimate the 951 percentile concentration of each pollutant. These concentrations are
listed as the Predicted max concentrations on the "RPA Sheet" in the RPA spreadsheet. The
Predicted Max concentrations are compared to the Total allowable acute and chronic
concentrations to determine if a permit limit is necessary. This is in accordance with the U.S.
EPA Technical Support Document for Water Quality -Based Toxics Control published in 1991.
9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge, is being
inserted into all permits with facilities monitoring for hardness -dependent metals to build a more
robust hardness dataset.
10. Hardness and flow values used in the Reasonable Potential Analysis for this permit included:
Parameter
Value _
Comments
Effluent Hardness (mg/L)
[Total as, CaCO3 or (Ca+Mg)]
29.67 mg/L
Average of hardness reported on 3
PPAs
Upstream Hardness (mg/L)
[Total as, CaCO3 or (Ca+Mg)]
25 mg/L
Default value
7Q10 summer (cfs)
6.1
1Q10 (cfs)
5.08
Permitted Flow (MGD)
2.0
11. The Total Chromium NC WQS was removed and replaced with trivalent chromium and
hexavalent chromium WQC. Effluent sampling data on Total Chromium is used as a surrogate
parameter to assess if limitations and/or sampling are required for trivalent or hexavalent
chromium.
Date: 4/4/2017
Permit Writer: Trupti Desai
Page 4 of 4

City of Cherryville
NC0044440
a
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) = 2.00
1QIOS(cfs)= 5.08
7QIOS(cfs)= 6.10
7QIOW (cfs)= 16.00
30Q2 (cfs) = NO 30Q2 DATA
Avg. Stream Flow, QA (cfs) = 58.00
Receiving Stream: Indian Creek HUC 03050102
Outfall 001
Qw =2 MGD
WWTP/WTP Class: Cherryville Wastewater Tre COMBINED IIARDNESS (mg/L)
IWC% @ I Q I OS = 37.89731051 Acute = 26.77 mg/L
IWC% @ 7QIOS = 33.69565217 Chronic = 26.57 mg/L
IWC%@ 7QIOW = 16.23036649
IWC% @ 30Q2 = N/A
IW%C @ QA = 5.073649755
Stream Class: C
PARAMETER
TYPE
(1)
NC STANDARDS OR EPA CRITERIA
_1
N
f-
=
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Chronic
Standard Applied
Acute
n
# D. Max Pred Cw Allowable Cw
Copper
NC
8.3023
FW(7Q10s)
11.1686
ug/L
20
16
13.75
Acute: 29.47
Chronic-----24.64 --
No value > Allowable C'w
No RP , Predicted Max is 50% of Allowable Cw -
apply Quarterly Monitoring
---------------------------•
Cyanide
NC
5
FW(7Q10s)
22
10
ug/L
20
0
NO DETECTS
Acute: 58.1
Chronic14.8---
Max MDL = 10
No detects
----------------------------
Zinc
NC
133.4559
FW(7Q10s)
133.2003
ug/L
20
19
100.0
Acute: 351.5
Chronic: 396.1
No value > .Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoringrequired — — — — — — — —
0
0
N/A
Acute:
— _ ---------^---------------------------
-_
Chronic:
0
0
N/A
Acute:
— — — — — —
Chronic:
— — — — — — — — — — — — —
0
0
N/A
Acute:
Chronic:
0
0
N/A
Acute:
--Chronic-----------
----------------------------
Page 1 of 1
0044440 RPA 6302016, rpa
3/20/2017

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
['CHECK IF HQW OR ORW WQS
City of Cherryville
Cherryville Wastewater Treatment Plant / III
NC0044440
001
2.000
['Apply WS Hardness WQC
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Effluent Hardness
Indian Creek
03050102
c,
6.10
16.00
58.00
5.08
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
Data Source(s)
❑CHECK TO APPLY MODEL
29.67 mg/L (Avg)
25 mg/L (Avg)
26.57 mg/L
26.77 mg/L
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
Par25
Name
WQS
Type
Chronic r.+crier
Acute
PQL Units
Arsenic
Aquaclic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HH/WS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
0.6177
FW
3.4389
ug/L
Chlorides
Aquatic Life
NC
230
FW
mgli..
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
Ilk Total Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
123.7637
FW
957.1932
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
8.3023
FW
11.1686
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
3.1507
FW
81.5236
ug/L
Mercury
Aquatic Lire
NC
12
FW
0.5
Molybdenum
Human Health
NC
2000
HH
uglL
Nickel
Aquatic Life
NC
39.2031
FW
355.1637
pg/L.
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
0.3334
ug/L
Zinc
Aquatic Life
NC
133.4559
FW
133.2003
ug/L
0044440 RPA 6302016, input
3/20/2017

REASONABLE POTENTIAL ANALYSIS
H1
Effluent Hardness
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
Date Data BDL=112DL Results
1 8/20/2013 26 26 Std Dev. 4.0415
2 1/22/2015 34 34 Mean 29.6667
3 4/14/2015 29 29 C.V. (default) 0.6000
4 n 3
5 10th Per value 26.60 mg/L
6 Average Value 29.67 mg/L
7 Max. Value 34.00 mg/L
a
9
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
H2
Upstream Hardness
na►n Data
25
Use "PASTE SPECIAL -
Values" then "COPY"
. Maximum data
points = 58
BDL=1/2DL Results
25 Std Dev. N/A
Mean 25.0000
C.V. 0.0000
n 1
10th Per value 25.00 mg/L
Average Value 25.00 mg/L
Max. Value 25.00 mg/L
0044440 RPA 6302016, data
- 1 - 3/20/2017

REASONABLE POTENTIAL ANALYSIS
Pall
Copper
Date Data BDL=112DL
11
6.2
7.5
7.5
5
2.5
5.5
6.4
2.5
9.6
5.2
7.9
8
2.5
5.1
6
7
2.5
11
10
3/13/2012
6/12/2012
9/11/2012
12/11/2012
3/12/2013
6/11/2013
9/5/2013
12/10/2013
3/11/2014
6/10/2014
9/9/2014
12/9/2014
3/10/2015
6/12/2015
9/10/2015
12/8/2015
3/8/2016
6/14/2016
9/13/2016
12/13/2016
11
6.2
7.5
7.5
5
< 5
5.5
6.4
< 5
9.6
5.2
7.9
8
< 5
5.1
6
7
< 5
11
10
Results
Std Dev.
Mean
C.V.
n
Mull Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL•
Values' then "COPY"
. Maximum data
points = 5B
Par12
Cyanide
2.7146
6.4450
0.4212
20
1.25
11.00 ug/L
13.75 ug/L
Date Data BDL=112DL Results
5 Std Dev.
5 Mean
5 C.V.
5 n
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
3/13/2012
6/12/2012
9/11/2012
12/11/2012
12/27/2012
3/12/2013
6/11/2013
9/5/2013
12/10/2013
3/11/2014
6/10/2014
9/9/2014
12/9/2014
3/10/2015
6/12/2015
9/10/2015
12/8/2015
3/8/2016
6/14/2016
9/13/2016
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
0.0000
5.00
0.0000
20
Mult Factor = 1.00
Max. Value 5.0 ug/L
Max. Pred Cw 0 DETECTS ug/L
-2-
0044440 RPA 6302016, data
3/20/2017

REASONABLE POTENTIAL ANALYSIS
Par21
Zinc
Date Data BDL=1/2DL Results
1 3/13/2012 50 50 Std Dev.
2 6/12/2012 52 52 Mean
3 9/11/2012 48 48 C.V.
4 12/11/2012 82 82 n
5 3/12/2013 46 46
6 6/11/2013 < 20 10 Mult Factor =
7 9/5/2013 78 78 Max. Value
8 12/10/2013 46 46 Max. Pred Cw
9 3/11/2014 31 31
10 6/10/2014 61 61
11 9/9/2014 43 43
12 12/9/2014 57 57
13 3/10/2015 33 33
14 6/12/2015 59 59
15 9/10/2015 41 41
16 12/8/2015 32 32
17 3/8/2016 35 35
18 6/14/2016 34 34
19 9/13/2016 42 42
20 12/13/2016 77 77
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
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
17.7476
47.8500
0.3709
20
1.22
82.0 ug/L
100.0 ug/L
0044440 RPA 6302016, data
- 3 - 3/20/2017

IWC Calculations
Facility:Cherryville WWTP
NC0044440
Prepared By: Trupti Desai
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
2
6.1
16
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/l)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/I)
IWC (%)
Allowable Conc. (ug/I)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
6.1
2
3.1
17.0
0
33.70
50
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/l)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
200/100mI DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
2.97 Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
4. BAT for Minor Domestics: 2 mg/I (summer) and 4 mg/I (winter)
5. BAT for Major Municipals: 1 mg/I (year-round)
6.1
2
3.1
1.0
0.22
33.70
2.5
16
2
3.1
1.8
0.22
16.23
10.0
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009

Berry, Ron
'From: Larry Wright <[e-mail]>
Sent: Friday, April 29, 2016 11:26 AM
To: Berry, Ron; [e-mail]
Subject: Re: Missing information to complete NPDES renewal application for Cherryville WWTP
NC0044440
I have sent the missing PPA or APAM to you today.
I'm getting prices from two different labs today for the Chronic 2nd species Tox.
We will do one in May 2016, June 2016, July 2016 and August 2016
If you need anything else, please give me a call.
Thanks,
Larry Wright
Plant Superintendent/ORC
Cherryville Wastewater Treatment Plant
704-435-1739 — plant
704-214-1162 — cell
[e-mail]
From: "Berry, Ron" <[e-mail]>
Date: Friday, April 29, 2016 at 9:01 AM
To: Larry Wright <[e-mail]>
Cc: Larry Wright <[e-mail]>
Subject: Missing information to complete NPDES renewal application for Cherryville WWTP NC0044440
Sending this again with different email address
Mr. Wright,
Based on the information we currently have in our file we are still missing several required documents and have issues
with what we have received.
1) We have received three acute toxicity using fathead minnow (pimephales promelas). The original EPA
mandated four 2' species toxicity test were omitted from the application and you had discussed this with
Charles Weaver in our Raleigh office. Your NPDES permit requires chronic toxicity testing (see special condition
A.(2)), in which case, the 2nd species test must be the same type test using a second species. You need to get
four chronic second species test completed one per month starting immediately.
2) Apparently there were also some problems with getting the three required Annaul Priority Scans done (see
NPDES permit special condtion A.(3)). There is one scan attched to the renewal applicaton dated Augiust 2013
but we are missing some analysis which may because we are missiing the even numbered pages (2,4,6,8, 10).
We have received another scan dated April 2015 and do have all the pages and required data. What is the status
of the third scan? If it was not done, or you do not have another complete scan that was conducted later than
2012 you can submit, then you need to complete the final scan in the next 120 days.
You can submit the missing information by attaching it to an email to [e-mail] or by mail to:
Attn: Ron Berry
Complex Permitting Unit
DEQ/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh, NC 27699-1617
1

CHERRYVILLE WWTP FLOW TOTALS
2012
Month/Year
Average Daily flow
MGD
Maxium daily flow
MGD
Jan-12
0.588
1.076
Feb-12
0.515
0.798
Mar-12
0.488
0.968
Apr-12
0.409
0.680
May-12
0.541
1.301
Jun-12
0.420
0.578
J u I-12
0.364
0.576
Aug-12
0.430
0.601
Sep-12
0.455
0.823
Oct-12
0.435
0.631
Nov-12
0.414
0.520
Dec-12
0.466
0.724
Tota I
0.460
1.301
AVERAGE DAILY FLOW RATE = .460 MGD
MAXIMUM DAILY FLOW = 1.301 MGD

CHERRYVILLE WWTP FLOW TOTALS
2013
Month/Year
Average Daily flow
MGD
Maxium daily flow
MGD
Jan-13
0.567
1.438
Feb-13
0.543
1.095
Mar-13
0.597
0.849
Apr-13
0.605
1.386
May-13
0.589
1.228
Jun-13
0.576
0.965
Jul-13
0.737
1.514
Aug-13
0.533
0.923
Sep-13
0.501
0.763
Oct-13
0.463
0.840
Nov-13
0.537
1.396
Dec-13
0.613
1.429
Total
0.572
1.514
AVERAGE DAILY FLOW RATE = .572 MGD
MAXIMUM DAILY FLOW = 1.514 MGD

tr-
CHERRYVILLE WWTP FLOW TOTALS
2014
Month/Year
Average Daily flow
MGD
Maxium daily flow
MGD
Jan-14
0.917
1.334
Feb-14
0.814
1.256
Mar-14
0.727
1.249
Apr-14
0.661
1.082
May-14
0.568
0.846
Jun-14
0.428
0.529
JuI-14
0.377
0.456
Aug-14
0.428
0.753
Sep-14
0.463
1.078
Oct-14
0.415
0.559
Nov-14
0.513
1.242
Dec-14
0.510
1.111
Total
0.568
1.334
AVERAGE DAILY FLOW RATE = .568 MGD
MAXIMUM DAILY FLOW FOR = 1.334 MGD

Berry, Ron
_Subject: Cherryville WWTP
Start Date: Tuesday, April 19, 2016
Due Date: Tuesday, April 19, 2016
Status: Waiting on someone else
Percent Complete: 10%
Total Work:
Actual Work:
0 hours
0 hours
Owner: Berry, Ron
Categories: Renewal
Permit: NC0044440
4/19/16:
Set up efile and task file; copied active permit, active fact sheet, draft cov let template, and fact sheet template to efile.
Preliminary review, permit has Copper and Zinc monitoring. Checked application, have three acute 2"d species toxicity
test (should be chronic toxicity) and no PPAs summarized in app, one copy PPA attached to permit with missing pages,
one copy 2nd PPA (all pages present) in file but no 3rd PPA. Per application contact info emailed Larry Wright with list of
items that need to be provided:
1) 4 chronic 2"d species toxicity test, start immediately, do one per month, send results to me
2) For PPA, need missing pages for attachment to app, need 3rd PPA, if no 3'd PPA done then complete on in next
120 days, send to me
NOTE CANNOT DO RPA UNTIL FINAL EPA APPROVAL ON NEW WQS OBTAINED
4/29/16:
Called Mr. Wright to confirm he had received my email, he had not. Reviewed email, what info was missing. Mr. Wright
will check his notes and see what has available and what we told him to send. Stated could sent missing docs via email.
Resent 4/19/16 email used caps in address. Checked 2 PPA added metal data to DMR evaluation. Conducted screening
RPA using data from DMR evaluation, no new limits required. Pulled NPDES file. Had vm from Mr. Wright will be
emailing PPAs to me shortly, getting cost to run 2"d species chronic test. Talked to Cindy Moore, ATU, confirmed the 2nd
species test must match same type WET as in permit. Received emails with all 3 PPAs reports attached. Also, had reply
to resent email.
5/2/16:
Printed out missing pages PPAs from emails attachment to compile 3 complete PPAs, attached to app. Updated
screening RPA to use new PPA data.
5/5/16:
Talked to Mr. Wright in regards to recent email request to confirm an email response was sufficient. Replied to email
stating permittee to use same chronic toxicity test procedure and effluent concentration as used in permit quarterly
chronic test, ok to use fathead minnow, only do four test one month apart, send me results.
5/9/16:
Received email from lab with questions on how to run 2"d species toxicity test. Replied and cc Cindy Moore, referred lab
to ATB Cindy Moore for answer to questions.
1

5/12/16:
Larry Wright called, had concerns about using correct testing procedure for 2"d species, cost is significant.
Recommended he contact Cindy Moore, ATB, for any questions.

Larry Wright
Tuesday, January 20, 2015 at 7:58:39 AM Eastern Standard Time
Subject: RE: renewal notice for NPDES permit NC0044440 - 2nd species toxicity
Date: Friday, January 16, 2015 at 3:27:13 PM Eastern Standard Time
From: Weaver, Charles
To: Larry Wright
Larry — the requirement for 2nd species toxicity testing was forced upon us by EPA in the early 2000s. We're
going to add it to permits as a special condition, but unfortunately we can't waive the requirement.
If you haven't done any before now I believe you can do them monthly to get four done fairly soon. Check
with the Aquatic Toxicity staff and they'll help you out.
CHW
From: Larry Wright [mailto:[e-mail]]
Sent: Friday, January 16, 2015 1:42 PM
To: Weaver, Charles; Larry Wright
Cc: skeever©cityofcherryville.com
Subject: Re: renewal notice for NPDES permit NC0044440
Importance: High
We are working on our NPDES permit renewal and should have it mailed next week by January 23 to meet the
deadline of February lst.
I have a question about the renewal requirements part 2 on the scanned attached document.
See attached
My question is, we were supposed to have done 4 additional Toxicity test? If so, I did not know this.
The way I am reading the attached letter part 2 is that we were suppose to do four additional Toxicity test?
I don't remember having to do that five years ago. I think we just sent copies of our normal toxicity results in with our
permit renewal.
Thanks,
Larry Wright
Plant Superintendent/ORC
Cherryville Wastewater Treatment Plant
704-435-1739 — plant
704-214-1162 — cell
[e-mail]
From: Charles Weaver <[e-mail]>
Date: Friday, January 16, 2015 at 9:16 AM
To: Larry Wright <[e-mail]>
Cc: Ben Blackburn<[e-mail]>
Subject: renewal notice for NPDES permit NC0044440
The NPDES permit for the Cherryville WWTP expires on July 31, 2015. This notice is being
sent to explain the requirements for your permit renewal application.
Page 1 of 2

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
FORM
2A NPDES FORM 2A APPUUCA1]ON OVE
NPDES
APPLICATION OVERVIEW
PERMIT ACTION REQUESTED:
Permit Renewal
RIVER BASIN:
Catawba River
Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet
and a "Supplemental Application Information" packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Paris A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
Additional Application Information for Applicants with a Design Flow >_ 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through B.6.
Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). SlUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a.
Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
c. Is designated as an SIU by the control authority.
G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer
Systems).
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 1 of 22

FACILITY NAME AND PERMIT NUMBER:
- , Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Permit Renewal
RIVER BASIN:
Catawba River
BASIC APPLICATION INFORMATION
PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet.
A.1. Facility Information.
Facility Name Cherryville Wastewater Treatment Plant
Mailing Address 116 South Mountain Street
Cherryville, North Carolina 28021
Contact Person Larry Wright
Title Plant Superintendent / ORC
Telephone Number 17041435-1739
Facility Address 736 Tot Dellinger Rd
(not P.O. Box) Cherrwille, North Carolina 28021_
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant Name same as above
Mailing Address
Contact Person
Title
Telephone Number ( 1
Is the applicant the owner or operator (or both) of the treatment works?
X owner ❑ operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant.
X facility 0 applicant
A,3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works
(include state -issued permits).
NPDES NC00444400 Lab 5619
UIC Storm water NCG110000
RCRA Land App WQ0000430
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.).
Name Population Served Type of Collection System Ownership
City of Cherrwille 5,700 separate municipal
Total population served 5,700
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 2 of 22

A.S. Indian Country.
a. Is the treatment works located in Indian Country?
❑ Yes XNo
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
❑ Yes XNo
A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12'h month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 2.0 mgd
Two Years Arlo Last Year This Year
b. Annual average daily flow rate .460 mqd 2012 .572 mqd 2013 .568 mqd 2014
c. Maximum daily flow rate 1.301 mqd 2012 1.514 mqd 2013 1.334 mqd 2014
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each.
X Separate sanitary sewer 100 cio
0 Combined storm and sanitary sewer ok
A.B. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? X Yes 0 No
If yes, list how many of each of the following types of discharge points the treatment works uses:
i. Discharges of treated effluent 1
ii. Discharges of untreated or partially treated effluent 0
iii. Combined sewer overflow points 0
iv. Constructed emergency overflows (prior to the headworks) 0
v. Other
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? Yes
If yes, provide the following for each surface impoundment:
Location:
Annual average daily volume discharge to surface impoundment(s)
Is discharge
X No
0 continuous or X intermittent?
c. Does the treatment works land -apply treated wastewater?
mgd
X Yes 0 No
If yes, provide the following for each land application site: See note in cover letter. 2014 Land App Report coming in 30 days.
Location: See attachment for Land App info
Number of acres: Variable. In 2013 2 fields were utilized, totaling 45.3 acres.
Annual average daily volume applied to site: 688,200 gallons applied / 2013
Is land application
0 continuous or X intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works?
❑ Yes XNo
45
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 4 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Permit Renewal
RIVER BASIN:
Catawba River
e.
If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g., tank truck, pipe).
N/A
If transport is by a party other than the applicant, provide:
Transporter Name
Mailing Address
Contact Person
Title
Telephone Number ( )
For each treatment works that receives this discharge provide the
following:
Name
Mailing Address
Contact Person
Title
Telephone Number ( )
If known, provide the NPDES permit number of the treatment works
Provide the average daily flow rate from the treatment works into
Does the treatment works discharge or dispose of its wastewater
in A.8. through A.8.d above (e.g., underground percolation, well
If yes, provide the following for each disposal method:
that receives this discharge
the receiving facility. mgd
in a manner not included
injection): 0 Yes X No
Description of method (including location and size of site(s) if applicable):
Annual daily volume disposed by this method:
Is disposal through this method 0 continuous or 0 intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 5 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
WASTEWATER DISCHARGES:
If you answered "Yes" to question A.8.a complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered "No" to question
A.8.a go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 001
b. Location City of Cherryville 28021
(City or town, if applicable) (Zip Code)
Gaston North Carolina
(County) (State)
(Latitude) (Longitude)
c. Distance from shore (if applicable) ft.
d. Depth below surface (if applicable) ft.
e. Average daily flow rate See attached Flow totals spreadsheet
f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes X No (go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge: mgd
Months in which discharge occurs:
g. Is outfall equipped with a diffuser? ❑ Yes X No
A.10. Description of Receiving Waters.
a. Name of receiving water Indian Creek
b. Name of watershed (if known) Catawaba River Basin
United States Soil Conservation Service 14-digit watershed code (if known):
c. Name of State Management/River Basin (if known):
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
d. Critical low flow of receiving stream (if applicable)
acute cfs
mgd
chronic cfs
e. Total hardness of receiving stream at critical low flow (if applicable):
mg/I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 6 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply.
X Primary 0 Secondary
❑ Advanced 0 Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal
Design SS removal
Design P removal
Design N removal
Other
c. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
Chlorine gas
If disinfection is by chlorination is dechlorination used for this outfall? X Yes 0 No
Does the treatment plant have post aeration? X Yes 0 No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number: 001
PARAMETER
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
Value
Units
Value
Units
Number of Samples
pH (Minimum)
*
s.u.
j%/jjj%j//j/j
pH (Maximum)
*
s.u.
7 / //// //
Flow Rate
*
Temperature (Winter)
*
Temperature (Summer)
• For pH please report a minimum and a maximum daily value
POLLUTANT
MAXIMUM DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
MUMDL
Conc.
Units
Conc.
Units
Number of
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
DEMAND (Report one)
BOD5
*
CBOD5
*
FECAL COLIFORM
*
TOTAL SUSPENDED SOLIDS (TSS)
END OF PART A.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 7 of 22
Z r.gicA-keS cl okk-r4 #o be 064aine3 M -wit, ;uttA F •e`i yv#kty per Mr. ChArles Wec*ve-r

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
BASIC APPLICATION INFORMATION
PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 MGD (100,000 gallons per day).
All applicants with a design flow rate z 0.1 mgd must answer questions B.1 through B.6. All others go to Part C (Certification).
B.1. Inflow and Infiltration. Estimate the average number of gallons per day
200,000 averacLe gpd
that flow into the treatment works from inflow and/or infiltration.
Briefly explain any steps underway or planned to minimize inflow and infiltration.
Collection system pipelines to be replaced as budget permits.
As an interim corrective action, VFD"s for influentpumps have been budgeted and approved for 2015. This will help
minimize the effect of Inflow and Infiltration on the plant.
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.)
a. The area surrounding the treatment plant, including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within Y< mile of the property boundaries of the treatment
works, and 2) listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed.
f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
8.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g.,
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram.
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a
contractor? 0 Yes 0 No
If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional
pages if necessary).
Name:
Mailing Address:
Telephone Number: ( )
Responsibilities of Contractor:
B.5. Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question B.6.)
a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies.
❑ Yes ❑ No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 8 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
c. If the answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if applicable).
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DDIYYYY MM/DD/YYYY
- Begin Construction / / / /
- End Construction / / / /
- Begin Discharge / / / /
- Attain Operational Level / / / /
e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? ❑ Yes 0 No
Describe briefly:
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated
effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information
on combine sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate
QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on -half years old.
Outfall Number:
POLLUTANT
MAXIMUM DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
ML/MDL
Conc.
Units
Conc.
Units
Number of
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
CHLORINE (TOTAL
RESIDUAL, TRC)
*
DISSOLVED OXYGEN
*
TOTAL KJELDAHL
NITROGEN (TKN)
NITRATE PLUS NITRITE
NITROGEN
*
OIL and GREASE
PHOSPHORUS (Total)
*
TOTAL DISSOLVED SOLIDS
(TDS)
OTHER
END OF PART B.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
cA\--es o ra DMA ', a Irk v,4,1y ter /\r. CkAfle_; Wcver
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 9 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
-
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
BASIC APPLICATION INFORMATION
PART C. CERTIFICATION
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of this
certification. All applicants must complete all applicable sections of Form 2A, as explained in the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed
Form 2A and have completed all sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
X Basic Application Information packet Supplemental Application Information packet:
0 Part D (Expanded Effluent Testing Data)
— N❑ Part E (Toxicity Testing: Biomonitoring Data)
APAM f ..So \A-S Ccv-0 0 Part F (Industrial User Discharges and RCRA/CERCLA Wastes)
2N° ec:e, TUX 4-`sic Cot { 0 Part G (Combined Sewer Systems)
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION.
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 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 fine and imprisonment
for knowing violations.
Name and official title Larry Wright, Wastewater Treatment Plant ORC / Plant Supervisor
Signature r —��
Telephone number 1704)_435-1734
Date signed Jar,.�.c.� vl S0 201 S-
Upon request of the permitting authority, you must submit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 10 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment
❑ Yes X No
F.2. Number of Significant Industrial Users
industrial users that discharge to the
a. Number of non -categorical SIUs.
b. Number of CIUs.
SIGNIFICANT INDUSTRIAL USER
from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
works have, or is subject ot, an approved pretreatment program?
(SlUs) and Categorical Industrial Users (ClUs). Provide the number
treatment works.
of each of the following types of
INFORMATION:
to the treatment works, copy questions F.3 through F.8 and
Supply the following information for each SIU. If more than one SIU discharges
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:
Mailing Address:
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
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):
Raw material(s):
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume
day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous
volume
following:
subcategory?
of process wastewater discharge into
or intermittent)
the collection system in gallons per
discharged into the collection system
b. Non -process wastewater flow rate. Indicate the average daily
in gallons per day (gpd) and whether the discharge is continuous
gpd ( continuous
of non -process wastewater flow
or intermittent.
or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the
a. Local limits 0 Yes
b. Categorical pretreatment standards 0 Yes
If subject to categorical pretreatment standards, which category and
❑ No
0 No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 21 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
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 0 No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste
❑ Yes ❑ No (go to F.12)
F,10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck 0 Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
by truck, rail or dedicated pipe?
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATIONICORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) 0 No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 22 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
SUPPLEMENTAL APPLICATION INFORMATION
PART G. COMBINED SEWER SYSTEMS
If the treatment works has a combined sewer system, complete Part G.
G.1. System Map. Provide a
a. All CSO discharge
b. Sensitive use areas
outstanding natural
c. Waters that support
G.2. System Diagram. Provide
includes the following information.
a. Location of major sewer
b. Locations of points
c. Locations of in -line
d. Locations of flow -regulating
e. Locations of pump
CSO OUTFALLS:
Complete questions G.3 through
map indicating the following: (may be included with Basic Application Information)
points.
potentially affected by CSOs (e.g., beaches, drinking water supplies, shellfish beds, sensitive aquatic ecosystems, and
resource waters).
threatened and endangered species potentially affected by CSOs.
a diagram, either in the map provided in G.1 or on a separate drawing, of the combined sewer collection system that
trunk lines, both combined and separate sanitary.
where separate sanitary sewers feed into the combined sewer system.
and off-line storage structures.
devices.
stations.
G.6 once for each CSO discharge point.
G.3. Description of Outfall.
a. Outfall number
b. Location
(City or town, if applicable) (Zip Code)
(County) (State)
(Latitude)
c. Distance from shore
d. Depth below surface
e. Which of the following
❑ Rainfall
❑ CSO flow
f. How many storm events
G.4. CSO Events.
a. Give the number of
(Longitude)
(if applicable) ft.
(if applicable) ft.
were monitored during the last year for this
0 CSO pollutant concentrations
volume 0 Receiving water quality
were monitored during the last year?
CSO events in the last year.
events (0 actual or 0 approx.)
CSO?
0 CSO frequency
b. Give the average duration per CSO event.
hours (0 actual or 0 approx.)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 23 of 22

FACILITY NAME AND PERMIT NUMBER:
Cherryville Wastewater Treatment Plant,
NC0044440
PERMIT ACTION REQUESTED:
Renewal
RIVER BASIN:
Catawba River
G.5.
G.6.
c. Give the average volume per CSO event.
million gallons (❑ actual or ❑ approx.)
d. Give the minimum rainfall that caused a CSO event in the last year
Inches of rainfall
Description of Receiving Waters.
a. Name of receiving water:
b. Name of watershed/river/stream system:
United State Soil Conservation Service 14-digit watershed code
c. Name of State Management/River Basin:
(if known):
United States Geological Survey 8-digit hydrologic cataloging unit
CSO Operations.
Describe any known water quality impacts on the receiving water caused
intermittent shell fish bed closings, fish kills, fish advisories, other recreational
code (if known):
by this CSO (e.g., permanent or intermittent beach closings, permanent or
loss, or violation of any applicable State water quality standard).
END OF PART G.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 24 of 22