NC0041696_Final Permit_20180105

T.i
Water Resources
ENVIRONMENTAL QUALITY
January 5, 2018
Mr. Greg Padgett
Wastewater Superintendent
Town of Valdese
PO Box 339
Valdese, North Carolina 28690
ROY COOPER
Goremo
MICHAEL S. REGAN
Secretan
LINDA CULPEPPER
Subject: Final NPDES Permit Renewal
Permit NCO041696
Lake Rhodhiss WWTP
Burke County
Facility Class IV
SIC Code 4952
Dear Mr. Padgett:
Interim 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 Division received comments from the permittee on the draft permit after the public comment period was
ended. The permittee requested to modify the proposed permit to remove instream monitoring requirements,
mercury minimization plan and ammonia nitrogen limitations for 7.5 MGD flow and monitoring frequency for
3.5 MGD, 7.5 MGD and 10.5MGD permitted flow. The Division can not fulfill these requests as these permit
conditions and permit limits were developed according to current laws and regulations.
The final permit maintains the following significant changes identified in the letter sent on October 3,
2017:
• Removed monitoring requirements for total copper from 7.5 MGD and 10.5 MGD permitted flows
based on the results of the Reasonable Potential Analysis (RPA). There were no copper monitoring
requirements for 3.5 MGD flow in the previous permit. The permittee will continue to monitor total
copper under the pretreatment program.
• Removed limits and monitoring requirements for total selenium and total silver for all permitted
flows based on results of RPA. However, the facility will continue to monitor these metals under
the pretreatment program.
• Reduced the frequency of monitoring for total nitrogen and total phosphorous from weekly to
monthly due to the change in impairment status of Lake Rhodhiss which is no longer listed in 303d
list.
State of North Carolina I Environmental Quality Water Resources
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919 807 6300

Page 12
• Reduced the frequency of effluent pollutant scan from annual to three times during the permit period
and added the language for toxicity testing requirements in A. (7) Effluent Pollutant Scan.
• Added requirements to notify the Division of Water Resources (DWR) upon reaching an annual
average daily flow equal or greater than 2.8 MGD to ensure compliance with 7.5 MGD effluent
limitations. (See Supplement to Permit Cover Sheet)
• Added monitoring requirements for Total Monthly Flow (TMF) for the permitted flow of 10.5 MGD
required to calculate monthly nutrient loads. (See A. (3) and A. (6))
• Added monthly average and weekly average effluent limits for ammonia nitrogen for the permitted
flow of 7.5 MGD as per NPDES Permitting Guidance to implement ammonia chronic criteria. (See
A.(2))
• Monitoring frequency for ammonia nitrogen has been changed from weekly to daily for 3.5 MGD,
7.5 MGD and 10.5 MGD permitted flows according to 15A NCAC 2B.0500 for class N wastewater
treatment facility.
• Added daily monitoring of effluent temperature for permitted flows of 3.5 MGD, 7.5 MGD and
10.5 MGD as per requirements in 15A NCAC 2B.0500. (See A.(1), A. (2) and A. (3))
• Added effluent and instream monitoring requirements for conductivity for permitted flows of 3.5
MGD, 7.5 MGD and 10.5 MGD because the facility treats industrial discharges with domestic
wastewater and it has a pretreatment program. (See A.(1), A. (2) and A. (3))
• Added minimum daily average limit of 5 mg/1 for oxygen in permitted flows of 3.5 MGD, 7.5 MGD
and 10.5 MGD as per 15A NCAC 2B.0200.
• Added Mercury Minimization Plan (MMP) to the permit according to the DWR Statewide Mercury
TMDL implementation guidance (See Special Condition A. (8)). This condition was modified from
the draft permit to add interim date. The Town of Valdese will be responsible for implementing this
plan.
The permittee requested to reconsider MMP requirements for the facility. However, this is a
programmatic change that requires approval by the EMC. NPDES will seek to change appropriate
revisions to the NPDES implementation of the Mercury Minimization Program (MMP); however to
protect for human health based on a fish tissue target of .3 mg/kg MMPs will continue to be required
for large municipal wastewater treatment plants greater than 2 MGD with significant quantities of
mercury greater than 1 ng/L. NPDES hopes that when Dental Effluent Guidelines requiring
amalgam separators for existing sources becomes effective (July 14, 2020) there will no longer be a
need for MMPs since most of the municipality MMPs focus on mercury reductions from Dental
offices.
• 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.
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-

Page 13
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. Hardness sampling should be performed in
conjunction with testing for metals.
• 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 this permit. [See Special Condition A (9)]
For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit
the following web page: http://deq.nc.gov/about/divisions/water-resources/edmr.
For more information on EPA's final NPDES Electronic Reporting Rule, please visit the following
web site: https://www.federalregister.gov/documents/2015/10/22/2015-24954/national-pollutant-
discharge-elimination-system-npdes-electronic-reporting-rule
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you, you have the right to an adjudicatory hearing upon written request within thirty (3 0) days following receipt
of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center,
Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to
obtain other permits which may be required by the Division of Water Resources or any other Federal, State,
or Local governmental permits that may be required.
If you have any questions concerning this permit, please contact Trupti Desai at [phone] or via email
at [e-mail].
Sincerely,
A-✓: Linda Culpepper
Interim Director, Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
DWR/Ashville Regional Office/Water Quality/Tim Heim
Ecopy: US EPA Region 4
DWR/Aquatic Toxicology Branch/Susan Meadows
DWR/PERCSNivien Zhong

Permit No. NCO041696
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards and regulations
promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution
Control Act, as amended,
Town of Valdese
is hereby authorized to discharge wastewater from a facility located at
Lake Rhodhiss Wastewater Treatment Plant
2100 Lake Rhodhiss Drive
Valdese
Burke County
to receiving waters designated as Lake Rhodhiss (Catawba River) in the Catawba River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
H, III and IV hereof.
This permit shall become effective February 1, 2018
This permit and authorization to discharge shall expire at midnight on February 28, 2021
Signed this day January 5, 2018
21-�
(; Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 13

Permit No. NC0041696
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as
of this issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and
provisions included herein.
Town of Valdese is hereby authorized to:
1. Continue to operate an existing 7.5 MGD capacity wastewater treatment facility with an approved
authorization to discharge 3.5 MGD with the following components:
• Influent pump station,
• Bar screen,
• Grit removal,
• Primary clarifiers,
• Aeration basins,
• Secondary clarifiers,
• Chlorination,
• Dechlorination
• Gravity sludge
• Thickeners,
• Residual centrifuges,
• Residuals composting operation
• SCADA system
The facility is located at Lake Rhodhiss Wastewater Treatment Plant, 2100 Lake Rhodhiss Drive,
Valdese, Burke County.
2. Upon reaching an annual average daily flow equal or greater than 2.8 MGD, the permittee is to submit a
written notification to the Division confirming that compliance with the 7.5 MGD limitation page A.(2)
is now in effect.
3. Upon receiving an Authorization to Construct from the Division of Water Resources to expand and
operate the facility to 10.5 MGD, and
4. Discharge from said treatment works at the location specified on the attached map into the Lake
Rhodhiss (Catawba River), which is classified WS -IV & B CA waters in the Catawba River Basin.
Page 2 of 13

Permit No. NCO041696
PART I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (3.5 MGD)
f 15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Beginning on the effective date of this permit and lasting until this facility reaches an annual average daily flow
equal to or greater than 2.8 MGD (80% of 3.5 MGD) or expiration, the Permittee is authorized to discharge
treated domestic and industrial wastewater from Outfall 001. Such discharges shall be limited and monitored' by
the Permittee as sj )ecified below:
EFFLUENT CHARACTERISTICS
Flow
BOD53
Total Suspender
NH3-N mg�1
Dissolved Oxyg
Temperature °C
Conductivity, pi
Fecal Coliform
pH
Total Residual chlorine
Hardness —Total as
CaCO3 or(Ca +ML (n
Hardness —Total as
[CaCO3 or (Ca + Mg)] (rr
Total Nitrogen 5
(NO2 + NO3 + TKN )
C0310)
(CO530)
(C0610)
(00300)
[000101
(00094)
Mean) (31616)
(00400)
(50060)
(00900)
I1
(00900)
7)
(CO600)
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly Daily
Average Maximum
Measurement
Frequency
Sample
Type
Sample
Location
3.5 MGD
30.0 mail
45.0 in Yi I
Continuous
Dailv
Recordin
Co
I or E
30.0 mg/l
45.0 mg/l
Daily
)osite
Composite
E and 1
E and I
Daily Average >5.0
200/100 ml I 400/100 ml
Not greater than 9.0 SX. nor less than
6.0 S.U.
28.0 ue l
Monitor & Report (mg/0
Daily
—Dai!y_
Daily
Daily
Daily
Dailv
Quarterly
Quarterly
Monthly
Grab
Grab
Grab
Grab
Grab
Composite
Grab
Composite
E
E
E
E
E
E
E
E
Total Phosphorus (C0665) Monitor & Report ( m F�) Monthly Composite E
Dissolved Ox en ma lb ( 00300 Variable Grab U and D
Tem erature °C6 (000101 Variable Grab U and D
Conduc6vit mho/cmb (00094] Variable Grab U and D
Chronic Toxicirv' (TGP3B) Quarterly Composite E
Effluent Pollutant Scan (NCO1) Monitor and R ort
Notes:
� Footnote 8 Footnote 8 E
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See Special Condition A (9).
2. Sample Locations: E - Effluent, I — Influent, U- Upstream at least 100 feet above the outfall, D- Downstream 1 mile below the outfall at NCSR
1001.
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85%
removal).
4. The Division shall consider all effluent total residual chlorine values reported below 50 ug/l to be in compliance with the permit. However, the
Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these
values fall below 50 ug/l.
5. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite
Nitrogen, respectively.
6. Variable monitoring frequency 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 @ 2.4%; January, April, July, October. See Special Conditions A. (4).
8. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see Special Condition A. (7)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3of13

Permit No. NCO041696
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (7.5 MGD)
[15A NCAC 02B.0400 et seq., 0213.0500 et seq.]
During the period beginning when this facility reaches an annual average daily flow equal to or greater than 2.8
MGD and lasting until expiration or expansion to 10.5 MGD, the Permittee is authorized to discharge treated
municipal and industrial wastewater from Outfall 001. Such discharges shall be limited and monitored' by the
Permittee as s necified below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
Monthly Weekly Daily
Average Average Maximum
MONITORING REQUIREMENTS
Measurement Sample Sample
Frequency Type Location
Flow
50050)
7.5 MGD
Continuous
Recording
I or E
BOD53
(C0310)
30.0 mgA 45.0 m /l
Dai!y
Composite
E and I
Total Suspended Solids
(C0530)
30.0 mg/1 45.0 mg/I
Daily
Composite
E and I
NH3-N
C0610.
16.0 mg/1 35.0 mg/1
Daily
Composite
E
Dissolved Oxygen
(00300)
Daily Average >5.0 mg/1
Daily
Grab
E
Temperature °C
00010)
I
Daily
Grab
E
Conductivity, mho/cm
00094)
1
Daily
Grab
E
Fecal Coliform Geometric Mean
(31616)
200/100 ml 400/100 ml I
_2ailX
Grab
E
pH
(00400)
Not greater than 9.0 S,U. nor less than
6.0 S.U.
Daily
Grab
E
Total Residual Chlorine a
50060
28.0 1
Daily
Grab
E
Hardness -Total as
CaCO3 or Ca + M (Mg/1)
(00900)
Quarterly
Composite
E
Hardness -Total as
[CaCO3 or (Ca + Mg)] (mg/1)
(00900)
Quarterly
Grab
U
Total Nitrogen 5
N 02 + NO3 + TKN
(C0600)
Monitor & Report (mg/1)
Monthly
Composite
E
Total Phosphorus
(C0665)
Monitor & Report (mg/1)
Monthly
Composite
E
Dissolved OxN,,,en mg/16
(00300)
Variable
Grab
U and D
Temperature °C6
(00010)
Variable
Grab
U and D
Conductiviry mho/cm6
(00094)
Variable
Grab
U and D
Chronic Toxicity 7
(TGP3B)
Quarterly
Composite
E
Effluent Pollutant Scan
(NCO1)
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 (9).
2. Sample Locations: E - Effluent, I - Influent, U- Upstream at least 100 feet above the outfall, D- Downstream 1 mile below the outfall at NCSR
1001.
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85%
removal).
4. The Division shall consider all effluent total residual chlorine values reported below 50 ug/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 ug/1.
5. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite
Nitrogen, respectively.
6. Variable monitoring frequency is defined as follows: Samples collected three times per week during June I through September 30 and once per week
October 1 through May 31.
7. Chronic Toxicity (Ceriodaphnia) P/F @ 4.9%; January, April, July, October. See Special Conditions A. (4).
8. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see Special Condition A. (7)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 13

Permit No. NCO041696
A. (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (10.5 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning upon expansion to 10.5 MGD and lasting until expiration, the Permittee is
authorized to discharge treated municipal and industrial wastewater from Outfall 001. Such discharges shall be
limited and monitored' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
Flow
Total Monthlv Flow
BOD53
Total Suspended Sol
NH3-N
Dissolved Oxygen
Temperature °C
Fecal Coliform
pH
Total Residual Chlorine 4
Hardness -Total as
LC03or[Ca+Mg]� [m� 1s
Hardness -Total as
[CaCO3 or (Ca + Mg)] (mg/1)
TKN
NO2 + NO3
Total Nitrogen 5
(NO2 + NO3 + TKN I
TN Load6
Total Phosphorus
TP Load6
Dissolved Oxv4en mg 17
Temperature °C7
^- 7
(x2220)
C� 0310)
(C0530)
Ci 06101
(00300)
(00010)
(00094)
(31616)
(00400)
(00900)
(0 0900) j
EFFLUENT LIMITATIONS
Monthly
Average
10.5 MGD
MONITORING REQUIREMENTS
Weekly Daily Measurement Sample Sample
Average Maximum Frequency Type ILocation2
Continuous
Continuous
15.0 m=il 22.5 m /I
30.0 mg/1 45.0 rl
4.0 mg/1 12.0 mg/1
Daily Average >5.0
200/100 ml I 400/100 ml
Not greater than 9.0 S,U. nor less than
6.0 S.U.
28.0 u l
(00625)
Monitor & Report (I
(00630)
Monitor & Report 0
(C0600)
Monitor & Report (t
146,659 lb/year
0665)
Monitor & Report (n
33,200 lb/year
00300)
30010)
Daily
Dail%,
Daily
Dailv
Daily
_ Daily.
Quarterly
Quarterly
Monthly
Monthly
Annual
Monthly
Annual
Variable
Variable
Variable
Calculated
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Grab
Grab
Composite
Grab
Composite
Composite
Calculated
Grab
Grab
Grab
IorE
IorE
Eand I
Eand I
E
E
E
E
E
E
E
E
U
E
E
E
E
E
Uand D
Uand D
Uand D
Chronic Toxicitvs (TGP3B) Quarterly Composite E
Effluent Pollutant Scan (NC01) Monitor and Report Footnote 9 Footnote 191] E
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See Special Condition A (9).
2. Sample Locations: E - Effluent, I - Influent, U- Upstream at least 100 feet above the outfall, D- Downstream 1 mile below the outfall at NCSR
1001.
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85%
removal).
4. The Division shall consider all effluent total residual chlorine values reported below 50 ug/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 ug/1.
5. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite
Nitrogen, respectively.
6. TN (or TP) Load is the mass quantity of Total Nitrogen (or Total Phosphorus) discharged in a given period of time. See Special Condition A. (5)
and A.(6) Calculation of Nutrient Loads.
7. Variable monitoring frequency is defined as follows: Samples collected three rimes per week during June 1 through September 30 and once per
week October 1 through May 31.
8. Chronic Toxicity (Ceriodaphnia) P/F @ 6.7%; January, April, July, October. See Special Conditions A. (4).
9. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see Special Condition A. (7)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 5of13

Permit No. NCO041696
A. (4) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY) @ 3.5, 7.5,10.5 MGD
[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 2.4% at 3.5 MGD; 4.9% at 7.5 MGD; 6.7% at 10.5 MGD.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions
or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or
subsequent versions. The tests will be performed during the months of January, April, July and October. 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 27699-1621
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.
Page 6of13

Permit No. NCO041696
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of
the month following the month of the initial monitoring.
A. (5) TOTAL NITROGEN AND PHOSPHOROUS LIMITS [G.S.143-215.1(b)]
Total Nitrogen (TN) load limits and Total Phosphorus (TP) load limits are annual limits and apply on a calendar
year basis.
A. (6) CALCULATION OF NUTRIENT LOADS [G.S. 143-215.1(b)]
(a) The Permittee shall calculate annual nutrient loads as follows:
(i.) Monthly TN (or TP) Load (lb/mo) = TN (or TP) x TMF x 8.34
where:
TN or TP = the average Total Nitrogen or Total Phosphorus concentration (mg/L) of
the composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the month
(MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual TP (or TN) Load (lb/yr) = Sum of the 12 Monthly TP (or TN) Loads for the calendar year
(b) The Permittee shall report monthly Total Nitrogen and Total Phosphorus results (mg/L and lb/mo) in the
appropriate discharge monitoring report for each month; and each calendar year's results (lb/yr) with the
December report for that year
Page 7of13

I
Permit No. NCO041696
A. (7) EFFLUENT POLLUTANT SCAN (Municipal POTWs) [G.S.143-215.1(b)]
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan
must be performed in each of the following years: 2018, 2019, and 2020. 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)
C0610
1,2-dichloroethane
32103
Bis (2-chloroethoxy) methane
34278
Chlorine (total residual, TRC)
50060
Trans-1,2-dichloroethylene
34546
Bis (2-chloroethyl) ether
34273
Dissolved oxygen
00300
1, 1 -dichloroethylene
34501
Bis (2-chloroisopropyl) ether
34283
Nitrate
00620
1,2-dichloropropane
34541
Bis (2-ethylhexyl) phthalate
39100
Nitrite
00615
1,3-dichloropropylene
77163
4-bromophenyl phenyl ether
34636
Kjeldahl nitrogen
00625
Ethylbenzene
34371
Butyl benzyl phthalate
34292
Oil and grease
00556
Methyl bromide
34413
2-chloronaphthalene
34581
Phosphorus
C0665
Methyl chloride
34418
4-chlorophenyl phenyl ether
34641
Total dissolved solids
70295
Methylene chloride
34423
Chrysene
34320
Hardness
00900
1,1,2,2 -tetrachloroethane
81549
Di -n -butyl phthalate
39110
Antimony
01097
Tetrachloroethylene
34475
Di-n-octyl phthalate
34596
Arsenic
01002
Toluene
34010
Dibenzo(a,h)anthmeene
34556
Beryllium
01012
1,1,1 -trichloroethane
34506
1,2 -dichlorobenzene
34536
Cadmium
01027
1,1,2 -trichloroethane
34511
1,3 -dichlorobenzene
34566
Chromium
01034
Trichloroethylene
39180
1,4 -dichlorobenzene
34571
Copper
01042
Vinyl chloride
39175
3,3-dichlorobenzidine
34631
Lead
01051
Acid -extractable compounds:
Diethyl phthalate
34336
Mercury (Method 1631 E)
COMER
P -chloro -m -cresol
34452
Dimethyl phthalate
34341
Nickel
01067
2 -chlorophenol
34586
2,4-dinitrotoluene
34611
Selenium
01147
2,4 -dichlorophen]
34601
2,6-dinitrotoluene
C0626
Silver
01077
2,4 -dimethylphenol
34606
1,2-diphenylhydmzine
34346
Thallium
01059
4,6-dinitro-o-cresol
34657
Fluoranthene
C0376
Zinc
01092
2,4-dinitrophenol
34616
Fluorene
34381
Cyanide
00720
2-nitrophenol
34591
Hexachlorobenzene
C0700
Total phenolic compounds
32730
4-nitrophenol
34646
Hexachlorobutadiene
39702
Volatile organic com, !ounds:
Pentachlorophenol
39032
Hexachlorocyclo-pentadiene
34386
Acrolein
34210
Phenol
34694
Hexachloroethane
34396
Acrylonitrile
34215
2,4,6 -trichlorophenol
34621
Indeno(1,2,3-cd)pyrene
34403
Benzene
34030
Base -neutral comr; ounds:
Isophorone
34408
Bromoform
32104
Acenaphthene
34205
Naphthalene
34696
Carbon tetrachloride
32102
Acenaphthylene
34200
Nitrobenzene
34447
Chlorobenzene
34301
Anthracene
CO220
N-nitrosodi-n-propylamine
34428
Chlorodibromomethane
34306
Benzidine
39120
N-nitrosodimethylamine
34438
Chloroethane
85811
Benzo(a)anthracene
34526
N-nitrosodiphenylamine
34433
2-chloroethyl vinyl ether
34576
Benzo(a)pyrene
34247
Phenanthrene
34461
Chloroform
32106
3,4 benzofluoranthene
34230
Pyrene
34469
Dichlorobromomethane
32101
Benzo(ghi)perylene
34521
1,2,4-trichlorobenzene
34551
1, 1 -dichloroethane
34496
Benzo(k)fluoranthene
34242
Page 8of13

Permit No. NCO041696
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 sl 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 122.210)(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 27699-1621
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional
toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of
EPA Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting
Unit.
A. (8) MERCURY MINIMIZATION PLAN (MMP) [G.S. 143-215.1(b)]
The permittee shall develop and implement a mercury minimization plan during this permit term. The MMP shall
be developed by August 1, 2018, and shall be available for inspection on-site. A sample MMP was developed
through a stakeholder review process and has been placed on the Division website for guidance
(http://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-
wastewater-permits, under NC Model Mercury Minimization Plan). The MMP should place emphasis on
identification of mercury contributors and goals for reduction. Results shall be summarized and submitted with
the next permit renewal. Performance of the Mercury Minimization Plan will meet the requirements of the
TMDL (Total Maximum Daily Load) for mercury approved by USEPA on October 12, 2012, unless and until a
Waste Load Allocation specific to this facility is developed and this NPDES permit is amended to require further
actions to address the Waste Load Allocation.
A. (9) ELECTRONIC REPORTING 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 H of this permit
(Standard Conditions for NPDES Permits):
Page 9of13

M
Permit No. NC0041696
• Section B. (11.) Signatory Requirements
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Reporting
Records Retention
Monitoring Reports
1. Reporting Ret#uirements (Supersedes Section D. (2.) and Section E. (5.) (ayl
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and
submit DMRs electronically using the internet. Until such time that the state's eDMR application is
compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be
required to submit all discharge monitoring data to the state electronically using eDMR and will be required
to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the
computer printed eDMR to the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
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).
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.
Page 10 of 13

Permit No. NCO041696
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:
ht s://www.federalrg 'ster. ov/documents/2015/10/22/2015-24954/national- ollutant-dischar e-
elimination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Reauest a Waiver from Electronic Re ortin
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://dN.nc.gov/about/divisions/water-resources/edmr
4. Sienatory Reguirentents I 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://dpq.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:
7 certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of
my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
Page 11 of 13

Permit No. NCO041696
5. Records Retention I 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 12 of 13

Permit No. NCO041696
Page 13 of 13
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Lake Rhodhiss WWTP — NCO041696
Town of Valdese - Burke County
N Facility Location (Not to scale)
Receiving Stream:
Drainage Basin:
Lake Rhodhiss x
Catawba River Basin Stream Class: WS -IV, B CA
Permitted Flow:
3.5 MGD, 7.5 MGD, 10.5 MGD HUCSub-Basin: O 3-08-31 X
050101
State Grid/USGS Quad: D12SE / Valdese, N.C.
Latitude 35° 46'41" N Longitude 81° 32'25"
Page 13 of 13