HomeMy WebLinkAboutNC0041696_Draft Permit_20171003Wa ter Resources
ENVIRONMENTAL QUALITY
ROY COOPER
Gores not
MICHAEL S REGAN
Sect etaq
S JAY ZIMMERMAN
Du ecta
October 3, 2017
Mr. Greg Padgett
Wastewater Superintendent
Town of Valdese
PO Box 339
Valdese, North Carolina 28690
Subject: Draft NPDES Permit Renewal
Permit NCO041696
Lake Rhodhiss WWTP
Burke County
Facility Class IV
SIC Code 4952
Dear Mr. Padgett:
Enclosed with this letter is a copy of the Draft NPDES permit renewal for your facility. Please review
this draft carefully to ensure thorough understanding of the requirements and conditions it contains.
There are several changes from the existing permit, including the following:
• 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 Rhodhlss which is no longer listed in
303d list.
• Reduced the frequency of effluent,pollutant scan from annual to three times during the permit
period and added the language for toxicity testing requirements an 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)
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919 807 6300
Page 12
• 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 daily maximum 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))
• 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 Statewide Mercury
TMDL. The Town of Valdese will be responsible for implementing this plan.
• 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 -
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 linutations. Effluent and upstream hardness have been
added to tlus 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
The NPDES Standard Conditions (Parts H, III, and IV) are not included with this draft. They can be
found at the following link if you would like to review them in conjunction with this draft permit.
Page 13
http • //ncdenr. s3.amazonaws. com/s3 fs-
public/Water%20Ouahty/Surface%20Water%20Protection/NPDES/MISC/NPDES %20Standard%20Con
dations-Boilerplate-DWR-S WP-NPDES-20150410.pdf
Concurrent with this notification the Division is publishing a notice in a newspaper having circulation in
the general Burke County area, soliciting public comments on this draft permit. Please provide any
written comments you may have to the following: NCDEQ/DWR, NPDES Permitting Branch, 1617 Mail
Service Center, Raleigh, NC 27699-1617 no later than 30 days after receipt of this draft permit.
Following the 30 -day public comment period, the Division will review all pertinent comments and take
appropriate action prior to issuing a final permit. If you have questions concerning this draft permit,
please call me at (919) 807-6351 or by email at Trupti.Desai@ncdenr.gov.
Sincerely,
Trupti /Desai, Engineer
NPDES Complex Permitting Unit
Hardcopy NPDES Files
E -copy: US EPA Region 4
DWR/Aquatic Toxicology Branch/Susan Meadows
DWR/Ashville Regional Office/Water Quality/Tun Hein
DWR/Asheville Regional Office/Public Water Supply/Bill Conner
DWR/Operator Certification Program/Maureen Kinney
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,
II, III and IV hereof.
This permit shall become effective tbd
This permit and authorization to discharge shall expire at midnight on February, 2021
Signed this day tbd
S. Jay Zimmerman, P.G., 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,
• Dechlormation
• 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 NCOO41696
PART I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (3.5 MGD)
[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 specified below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location'
Flow
(50050)
3 5 MGD
Continuous
Recording
I or E
BOD53
(CO3 10)
30 0 m /I 45 0 mg/1
Daily
Composite
E and I
Total Suspended Solids
(CO530)
30 0 mg/I 45 0 mg/1
Daily
Composite
E and I
NH3-N mg/1
(C06 10)
Daily
Composite
E
Dissolved Oxygen
(00300)
Daily Average >5 0 mg/1
Daily
Grab
E
Temperature °C
(00010)
Dail
Grab
E
Conductivity, mho/cm
(00094)
Daily
Grab
E
Fecal Coliform (Geometric Mean)
(31616)
200/100 ml 400/100 ml
Daily
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 g/1
Daily
Grab
E
Hardness —Total as
CaCO3 or Ca + M (mg/1)
(00900)
(00900
Quarterly
Composite
E
Hardness —Total as
[CaCO3 or (Ca + Mg)] (mg/1)
(00900)
(00900)
Quarterly
Grab
U
Total Nitrogen 5
(NO2 + NO3 + TKN)
(CO600)
Monitor & Report (mg/1)
Monthly
Composite
E
Total Phosphorus
(CO665)
Monitor & Report (mg/1)
Monthly
Composite
E
Dissolved Oxygen mg/16
(00300)
Variable
Grab
U and D
Temperature °C6
(00010
Variable
Grab
U and D
Conductivity mho/cmb
(00094)
Variable
Grab
U and D
Chronic Toxicity
(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 1 through September 30 and once per week
October I through May 31
7 Chronic Toxicity (Cenodaphnia) P/F @ 2 4%, January, April, July, October See Special Conditions A (4)
8 The permittee shall perform three Effluent Pollutant Scans dunng 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 3 of 13
Permit No. NCO041696
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (7.5 MGD)
[15A NCAC 02B .0400 et seq., 02B .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 specified below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location
Flow
50050
7 5 MGD
Continuous
Recording
I or E
BOD53
C0310)
30 0 mg/l 45 0 mg/1
Daily
Composite
E and I
Total Suspended Solids
(C0530)
30 0 :ng/1 45 0 mg/l
Daily
Composite
E and I
NH3-N
C0610)
16 0 mg/1 1 35 0 mg/l
Daily
Composite
E
Dissolved Oxygen
(00300)
Daily Average >5 0 mg/l
Daily
Grab
E
Temperature °C
00010
Daily
Grab
E
Conductivity, mho/cm
(00094)
Daily
Grab
E
Fecal Coliform (Geometric Mean)
(31616)
200,100 ml 400/100 ml
Daily
Grab
E
pH
(00400)
Nct greater than 9 0 S,U, nor less than
6 0 S U
Daily
Grab
E
Total Residual Chlorine 4
(50060)
28 0 1
Daily
Grab
E
Hardness —Total as
CaCO3 or Ca + M) (mg/1)
(00900)
00900
Quarterly
Composite
E
Hardness —Total as
[CaCO3 or (Ca + Mg)] (mg/1)
(00900)
(00900)
Quarterly
Grab
U
Total Nitrogen 5
NO2 + NO3 + TKN
(C0600)
Monitor & Report (mg/1)
Monthly
Composite
E
Total Phosphorus
(C0665)
Monitor & Report (mg/1)
Monthly
Composite
E
Dissolved Oxygen mg/l6
(00300)
Variable
Grab
U and D
Temperature °C6(00010)
Variable
Grab
U and D
Conductivity mho/cm6
(00094)
Variable
Grab
U and D
Chronic Toxicity
(TGP3B)
Quarterly
Composite
E
Effluent Pollutant Scan
(NC01)
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 totFl 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 NOa-N and NO2-N are Nitrate and Nitnte
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 (Cenodaphnia) P/F @ 4 9%, January, Apnl, July, October See Special Conditions A (4)
8 The permittee shall perform three Effluent Pollutant Scans during the term of tlus permit [see Special Condition A (7)]
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4of13
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
EFFLUENT LIMITATIONS
Monthly Weekly Daily
Average Average Maximum
MONITORING REQUIREMENTS
Measurement Sample Sample
Frequency Type Location'
Flow
(50050)
10 5 MGD
Continuous
Recording
I or E
Total Monthly Flow (TMF)
82220)
Continuous
Calculated
I or E
BOD53
C0310
15 0 mg/1 22 5 mg/1
Daily
Composite
E and I
Total Suspended Solids
(C0530)
30 0 mg/l 45 0 mg/,I
Daily
Composite
E and I
NH3-N
C0610)
4 0 mg/1 12 0,mg/l )
"Daily
Composite
E
Dissolved Oxygen
(00300)
Daily Average >5 0 mg/l
Daily
Grab
E
Temperature °C
00010)
Daily
Grab
E
Conductive mho/cm
00094
Daily
Grab
E
Fecal Coliform (Geometric Mean)
(31616)
200/100 ml 400/100 iril, '
Daily
Grab
E
pH
(00400)
Not greater than 9 0 S' U, nor less than
Daily
Grab
E
Total Residual Chlorine 4
(50060)
28 61µg/1
Daily
Grab
E
Hardness —Total as
CaCO3 or Ca + M (m 1)
(00900)
(00900
Quarterly
Composite
E
Hardness —Total as
[CaCO3 or (Ca + Mg)] (mg/1)
(00900)
(00900)
\Quarterly
Grab
U
TKN
(00625)
', Monitor & Report (1119/1)
`'Monthly
Composite
E
NO2 + NO3
(00630)
Monitor & Report-'(mg/1)
Total Nitrogen 5
02 + NO3 + TKN)
'(C0600)
Monitor & Report (mg/1)
Monthly
Composite
E
TN Load6
146,659 lb/year
Annual
Calculated
E
Total Phosphorus
(C0665)
'Monitor.& Report (mg/1)
Monthly
Composite
E
TP Load6
33,200 lb/year
Annual
Calculated
E
Dissolved Oxygen mg/1
(00300)
Variable
Grab
U and D
Temperature °C7
(00010)
Variable
Grab
U and D
Conductive mho/cm7
(00094)
Variable
Grab
U and D
Chronic Toxici $
(TGP3B)
Quarterly
Composite
E
Effluent Pollutant Scan
(NC01)
Monitor and Report
Footnote 9
Footnote 19
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 pennit However, the
Permittee shall continue to record and subenit 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 Netnte
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 times per week during June 1 through September 30 and once per
week October 1 through May 31
8 Chronic Toxicity (Cenodaphnea) P/F @ 6 7%, January, April, July, October See Special Conditions A (4)
9 The permittee shall perform three Effluent Pollutant Scans during the tern 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 7.5 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 performer) 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.
f
All toxicity testing results required as part of thistpermit conditions will be entered on the Effluent Discharge
Monitoring Form (MR -1) for the months m 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:
,/Attent10r: , North Carolina Division of Water Resources
`t 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 penod,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 wastetstream.
Should there be no discharge `of flo) - from the facility during a month in which toxicity monitoring is required,
the permittee will complete the iinformation 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 6 of 13
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."
Page 8 of 13
Ammonia (as N)
C0610
1,2-dichloroethane
32103
Bis (2-chloroethoxy) methane
34278
,
Chlorine (total residual, TRC)
50060
Trans-l,2-dichloroethylene
34546 :
Bis (2-chloroethyl) ether
34273
/34501/,
Dissolved oxygen
00300
1, 1 -dichloroethylene
Bis(2-chloroisopropyl) ether
34283
Nitrate
00620
1,2-dichloropropane
34541
Bis (2-ethylhexyl) phthalate
39100
/
Nrtnte
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
M
4-chloroplienyI 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)anthracene
34556
Beryllium
01012
1,1,1-tnehloroethane
34506
1,2 -dichlorobenzene
34536
Cadmium
01027
1,1,2-tnchloroethane
34511
1,3 -dichlorobenzene
34566
Chromium
01034
Trichloroethylene
39180
1,4 -dichlorobenzene
34571
Copper
01042
Vinyl chloride
39175
3,3-dichlorobenzidme
34631
i
Lead
01051
Acid -extractable compounds
'
Diethyl phthalate
34336
Mercury (Method 1631E)
COMER
P, -chloro -m -cresol
34452
Dimethyl phthalate
34341
Nickel
01067
2 -chlorophenol
34586
2,4-dimtrotoluene
34611
Selenium
01147
2,4-dichlorophenol
34601
2,6-dmitrotoluene
C0626
Silver
01077
2,4 -dimethylphenol
34606
1,2-diphenyHiydrazme
34346
Thallium
01059
4,6-dmitro-o-cresol
34657
Fluoranthene
C0376
Zinc
01092
2,4-dinitrophenol
34616
Fluorene
34381
Cyanide
00720
2-mtrophenol
34591
Hexachlorobenzene
C0700
Total phenolic compounds
32730
4-mtrophenol
34646
Hexachlorobutadiene
39702
Volatile organic compounds
Pentachlorophenol
39032
Hexachlorocyclo-pentadiene
34386
Acrolem
34210
Phenol
34694
Hexachloroethane
34396
Acrylomtnle
34215
2,4,6-tnchlorophenol
34621
Indeno(1,2,3-cd)pyrene
34403
Benzene
34030
Base -neutral compounds
Isophorone
34408
Bromofonn
32104
Acenaphthene
34205
Naphthalene
34696
Carbon tetrachloride
32102
Acenaphthylene
34200
Nitrobenzene
34447
Chlorobenzene
34301
Anthracene
CO220
N-mtrosodt-n-propylamme
34428
Chlorodibromomethane
34306
Benzidine
39120
N-mtrosodimethylatmne
34438
Chloroethane
85811
Benzo(a)anthracene
34526
N-mtrosodiphenylaimne
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-tnchlorobenzene
34551
1,1-dichloroethane
34496
Benzo(k)fluoranthene
34242
Page 8 of 13
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)
834 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual TP (or TN) Load (lbryr) = 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
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 31St of each designated sampling year. The report shall be
submitted to the following address.
NC DEQ / DWR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
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
Ceriodaphma 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, f
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 mmm ization plan during this permit term The MMP shall
be developed within 180 days of the NPDES Permit Effective Date, and shall be available for inspection on-site
A sample MMP was developed through a stakeholder review process and has been placed on the Division
website for guidance (http //deq nc gov/about/divisions/water-resources/water-resources-permits/wastewater-
branch/npdes-wastewater-permits, under NC Model Mercury Minimization Plan). The MMP should place
emphasis on identification of mercury contributors and goals for reduction Results shall be summarized and
submitted with the next permit renewal Performance of the Mercury Minimization Plan will meet the
requirements of the TMDL (Total Maximum Daily Load) for mercury approved by USEPA on October 12, 2012,
unless and until a Waste Load Allocation specific to this facility is developed and this NPDES permit is amended
to require further actions to address the Waste Load Allocation.
A. (9) ELECTRONIC REPORTING 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 9 of 13
Permit No NC0041696
• Section B (11.) Signatory Requirements
• Section D. (2 )
• Section D. (6.)
• Section E. (5 )
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1
The perrmttee 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 Marl 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 6ectronic 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. NC0041696
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or
the state authorized by EPA to implement the NPDES program) that is the designated entity for receiving
electronic NPDES data [see 40 CFR 127.2(b)]
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type
of electronic submission and for each state Instructions on how to access and use the appropriate electronic
reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at
https•//www federalre ig_ster gov/documents/2015/10/22/2015-24954/national-pollutant-discharge-
elimination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
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/eanir
4. Si2natory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issumg authority shall be signed by a person described in Part H, 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, underpenalty of law, that this document and all attachments wereprepared 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 [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 per_od 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
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Upstream Discharge
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Lake Rhodhiss WWTP — NCO041696
Town of Valdese - Burke County
Receiving Stream: Lake Rhodhiss Stream Class: WS -IV, B CA
Drainage Basin: Catawba River Basin Sub -Basin: 03-08-31
Permitted Flow: 3.5 MGD, 7.5 MGD, 10.5 MGD HUC: 03050101
State Grid/USGS Quad: D12SE / Valdese, N.C.
Page 13 of 13
N Facility Location (Not to scale)
z
x
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Latitude 35° 46'41" N Longitude 81' 32' 25"