NC0081621_Draft Permit_20181002

ROY COOPER
Governor4 1Iu .4
MICHAEL S.REGAN �'r 1 + �1 a
'� �¢¢ns •Secretary --
\��•_„�
LINDA CULPEPPER NORTH CAROLINA
Interim Director
Environmental Quality
October 2, 2018
Mr. Timothy R. Kiser, P.E.
Engineering Director
Water and Sewer Authority of Cabarrus County
232 Davidson Highway
Concord,NC 28027
Subject: Draft NPDES Permit
Permit NC0081621
Muddy Creek WWTP
Cabarrus County
Grade II Biological WPCS
SIC Code 4952
Dear Mr. Kiser:
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:
• Upstream and effluent total hardness quarterly monitoring have been added to the permit
for both flow tiers (0.15 and 0.3 MGD) as required by the implementation guidance for the
new dissolved metal standards [ See A. (1.) and A. (2.)].
• Since the facility has a pretreatment program, Whole Effluent Toxicity (WET) limits of
0.6% and 1.2% have been added to flow tiers of 0.15 and 0.3 MGD, respectively(See A.
(1.) and A. (2.)). In addition, special condition A. (3.) Chronic Toxicity Permit Limit
(Quarterly) has been added to the permit in accordance with 15 A NCAC 02B.0200 and
15A NCAC 2B.0500. Please review each paragraph carefully.
Permittees should be aware that the objective of whole effluent toxicity limits placed in
NPDES permits is to prevent discharge of toxic substances in amounts likely to cause
chronic or acute toxicity to wildlife in the receiving stream and represents the only feasible
method of evaluating the combined effects of constituents of complex
wastestreams. Following is a link to review DWR's WET
Strategy: https://files.nc.gov/ncdeq/Water%20Quality/ATU%20Documents/Whole%20E
ffluent%20Toxicity%20(WET)/WET%20Monitoring%20and%20Reporting/NCDWQ%2
OWET%20Strategy.pdf
D
NORI1.1 CAROLINA
..al EQ
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27699-1611
919.707.3601

Since,WET testing is a vital component to implementing water quality standards under the
NPDES permits program in accordance with the CWA Section 402, all the state
environmental agencies with NPDES programs implement WET testing.
• Effluent pollutant scans requirements have been added to Effluent Limitations and
Monitoring Requirements [See A. (1.) and A. (2.)]. Special condition A. (4.) includes
specific three years in which the effluent Pollutant Scan shall be performed (2020, 2021,
2022) the results should be submitted with your next renewal application per Federal
Regulations [40 CFR 122.21(j)(4)]. In addition, at the end of the Special Condition, 2nd
species Toxicity Testing Requirements for municipal permit renewals per Federal
Regulations [40 CFR 122.21(j)(5)] have been added. Please review each paragraph
carefully.
• Federal regulations require electronic submittal of all discharge monitoring reports
(DMRs) and program reports. The requirement to continue reporting discharge monitoring
data electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR)
internet application has been added to your NPDES permit[See Special Condition A. (5.)].
• Parameter codes have been added to the Effluent Limitations and Monitoring Requirements
[ See A. (1.) and A. (2.)].
• Regulatory citations have been added to the permit.
Please note that the receiving stream, Rocky River, is listed as impaired for turbidity, copper and
zinc on the North Carolina 2016 303(d) Impaired Waters List. Addressing impaired waters is a
high priority with the Division, and instream data will continue to be evaluated. If there is
noncompliance with permitted effluent limits and stream impairment can be attributed to your
facility,then mitigative measures may be required.
The NPDES Standard Conditions (Parts II, 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.
http://ncdenr.s3.amazonaws.com/s3 fs-
public/W ater%200uality/Surface%20Water%20Protection/NPDES/MIS C/NPDES%20 Standard
%20Conditions-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 Cabarrus 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) 707-3607 or by email at [e-mail].
�D��I�
D.pmnmeof[..tr.y
iroo
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27699-1611
919.707.3601

Sincerely,
• Qais Banihani, Engineer
NPDES Complex Permitting Unit
Hardcopy: NPDES Files
Ecopy: Mooresville Reginal Office/Water Quality
US EPA Region 4
Wastewater Operator Certification Group/Maureen Kinney
WSS/Aquatic Toxicology Branch/Susan Meadows
WSS/Ecosystem Branch/Mark Vander Borgh
NCWRC/Olivia Munzer
Willis Engineers/Charles A. Willis
Field WWTP Operator/Kimberly D. Holt
NORTH CAROLINA —EQ�
Women of Environmental QuelliNs..•
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27699-1611
919.707.3601

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
•
• PERMIT
TO DISCHARGE WASTEWATER UNDER TITh.
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
ff! \ \
In compliance with the provision 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 Po lution Control Act, as amen`ded,'the
Water and Sewer Authority of Catiarrus County
is hereby authorized to discharge wastewater fr m a facility located at the
. Muddy, Creek WWTP
;t='14655 Hopewell Church Road
/2/ and
, r_ ,•
)Cabarrus County
to receiving-waters designated as(the Rocky River-idsubbasin 03-07-12 of the Yadkin-Pee Dee River
Basin in'accofdance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts-I,II,III and IV hereof.'
This permit shall become effective Manth-XX, 20XX.
This permit and authorization to discharge shall expire at midnight on October 31, 2 3.
Signed this day is :2PMC.
4v;
DRAFT
Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission

Permit NC0081621
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 incl ded herein.
z d
The Water and Sewer Authority of Cabarrus County/is hereby authorized to:
<;),/,/\„; ':\,,,,
1. Continue to operate an existing 0.15 MGD wastewater/treatment system'that/includes the following
components:
i
o - ', \♦ Pump station
• Mechanical bar screen and backup manual bar sc eenf> v` . ,
• Equalization basin ''d� '�
• Influent splitter box '`? `�A.'/
• Two treatment trains, each contai ng; _
)=. Surge basin ,
> Two aeration basins " `` �
> Sludge holding tank `-' ;- ,
> Aerobic digester,,-- - ,., ��,, s °''`� °/
> Two clarifiers/ -- `` ` °
• Tertiary filters ' , % " N
• Ultra-violet disinfection 11.. *f` ( `Y X35
` J
• Cascade aeration v-, Ye.`
• Aerobic residuals�`digestion u`,,.. ` _ a ,//
• Arated,sludge.holding tank
• '-b
/Standy power.=;, ,, - \
// `„
The'°facility is located injMidland;at-the Muddy Creek WWTP at 14655 Hopewell Church Road,
Midland,NC in Cabarrus\:County. ',;
2. After completion of construction of expanded facility as detailed in Authorization to Construct(A to
C No. 081621A02)-and submission of the Engineer's Certification of completion form to the
Division, operate treatment facilities not to exceed a permitted flow of 0.3 MGD
•
4. Discharge from said treatment works via outfalls 001 at the location specified on the attached map
into the Rocky River, currently classified C waters in the Yadkin-Pee Dee River Basin.
Page 2of13

Permit NC0081621
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.15 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade II Biological Water Pollution
, Control System [15A NCAC 08G.0302]
During the period beginning upon the effective date of this permit and lasting until expansion above
0.15 MGD (and receipt of the Engineer's Certification of completion) or until expiration, the
Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored'
by the Permittee as specified below: AY
/'
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample ' Sample
Average Average Maximum -Frequency 2 Type Location 2
Flow 50050 0.15 MGD //, // Continuous Recofding Influent or Effluent
BOD,5-day(20°C)3 <' i '•° Influent and
A nl 1 -October 31) C0310 10.0 mg/L 15.0 mg/L '-t .22 k Composite;` Effluent
( P \,. -\,r
BOD,5-day(20°C)3 '\\`/'
.v`/: Influent and
(November 1 -March 31) C0310 20.0 mg/L 30.0 mg/L \,.- ,� 2ANeek Composite Effluent
S
Total Suspended Solids ' ` `�� v Influent and
(TSS)3 C0530 30.0 mg/L \45y0� mg/L� ->,,,, `-: 2N eek Composite Effluent
Ammonia(NH3 as N) , . "' .env..�
C0610 ,�.4.0_mg/L 12.0\mg/L / 2/Week Composite Effluent
(April 1 -October 31) s' ,� „ - �ry-,,,,,' ., p ; ›
Ammonia(NH3 as N)mg/L /- . ''�� ' 1 \- ''
(November 1 -March 31)
C0610' 8.0 mg/L a.1 24.0 mg/L• ; , 2/Week Composite Effluent
Dissolved Oxygen(DO) ', 00300 /Daily!average>_5.0 mg/L;,,
v 3/Week Grab Effluent
w
Fecal Coliform '' /'
6, w.� ry - :Th--, \ ��
-�~ ---7-- 31616 200/100 mL 400/100_mL-- 'j 2/Week Grab Effluent
(geometric meann), 'g�W - /
TTRCResidual,Chlorine " 50060 28 pg/L 3/Week Grab Effluent
oR 4 f�� �� ''‘,‘,.\
L
Temperature(�C) 00010 ,' 3/Week Grab Effluent
pHA' ' 00400 i.y Between 6.0 and 9.0 standard units 3/Week Grab Effluent
Total Hardness[as CaCO3], i="'f'
\,,,„;,:,;,05)9,790, Monitor and Report Quarterly Composite Effluent
,
Chronic Toxicity 6 ' ,j
TGP38 Quarterly Composite Effluent
Effluent Pollutant Scan NC01 Monitor and Report Footnote 7 Footnote 7 Effluent
Dissolved Oxygen 8(mg/L) 00300 Variable Grab U, D
Temperature 8(°C) 00010 Variable Grab U,D
Total Hardness[as CaCO3] 00900 Monitor and Report Quarterly Grab U
(mg/L)9
Page 3 of 13

Permit NC0081621
Footnotes:
1. Submit discharge monitoring reports electronically using the NC DWR's eDMR application system[See A. (5.)].
2. U: upstream at least 200 feet from the outfall. D: downstream at NCSR 1140. Instream sampling shall consist of grab
samples collected 3/week during June,July,August,and September and weekly during the remainder of the year.
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent values(85%removal).
4. Effluent monitoring and limitation only apply if chlorine or a chlorine derivative is added to the waste stream during
treatment. The Division shall consider all effluent TRC values reported below 50,ti,/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 50µg/L. •
5. Effluent Total Hardness sampling shall be conducted in conjunction with`effluent metals for the pretreatment
program. ,�`' \„
6. Chronic Toxicity(Ceriodaphnia)at 0.60%;quarterly during January,April,July and-October[See Section A. (3.)].
7. The Permittee shall perform three Effluent Pollutant Scans during the'term of this permit[See Section A. (4.)]
8. Instream (U & D) sampling is provisionally waived based on<tbe°Bermittee's membership,in the Yadkin-Pee Dee
River Basin Association (YPDRBA). If at any time during/he,,t im of this permit, membership is terminated, the
Permittee shall notify the Division immediately, and immediately conduct instream monitorm_g•as stipulated in this
permit. . > �o
9. The permittee shall sample instream hardness upstream of the facility's discharge':The sample shall`be representative of
the hardness in the receiving stream. If the permittee is a'tnember of/a/
monitoring coalition program, sampling for
instream hardness may be waived as long as the monitoring coalition-agre,4o sample hardness at the nearest upstream
location, at a minimum frequency of quarterly; and the permittee has"obtained approval from DWR-NPDES Permitting
Unit that the upstream station being monitored by the Coalition is.representative of the receiving stream for this
discharge. The permittee is responsible for submitting instream hardness•.tst-results with its permit renewal application
package. If Coalition membership is cancelled or the Coalition-terminates`instream hardness sampling at the approved
station, the permittee will immediately notify the.Division and resume sampling2for instream hardness upstream of its
discharge. '
f •
There shall be no discharge of floating`solids or',;visible foam in other than trace amounts
;/ ,1
, .
,
Page 4 of 13

Permit NC0081621
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.3 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade II Biological Water Pollution
Control System [15A NCAC 08G.0302]
Beginning upon receipt of the Engineer's Certification of completion of the 0.3 MGD expansion and
lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall
be limited and monitored' by the Permittee as specified below:
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency 2 Type Location 2
Flow 50050 0.3 MGD % Continuous Recording Influent or Effluent
/- 7
BOD,5-day(20°C)3 / Influent and
C0310 10.0 mg/L 15.0 mg/L / 2/Week 4 Composite
(April 1 -October 31) / Effluent
BOD,5-day(20°C)3 //V/ ' Influent and
(November 1 -March 31) C0310 20.0 mg/L 30.0 mg/L eek 4 Composite Effluent
Total Suspended Solids `, / Influent and
(TSS)3 C0530 30.0 mg/L 45.0-mg/L , 2/Week 4 Composite Effluent
Ammonia(NH3 as N) 12. \(April 1 -October 31) C0610 4.0 mg/L 0 mg/L 2/Week 4 Composite Effluent
Ammonia(NH3 as N)mg/L /
(November 1 March 31)
C0610'x,8,0 mg/L 24.0 mg/L i /,; - 2/ Week 4 Composite Effluent
Dissolved Oxygen(DO) /00300 Daily average>-5:0,nig/L 3/Week Grab Effluent
r
Fecal Coliform
\31616. 200/100 mL" 400/100_mL 2/Week 4 Grab Effluent
(geometric mean) �\ , // ; _
Total Residual Chlorine -' '' /
(TRC)5/ r 50060 ., . ' 28 pg/L , 3/Week Grab Effluent
Temperature(°C) 00010 , ��, 3/Week Grab Effluent
\ ,„, ,
pH - 00400' '`Between 6:0 and 9.0 standard units 3/Week Grab Effluent
Total Hardness[as CaCO3] 00900 ; 1 Monitor and Report QuarterlyComposite Effluent
(mg/L)6 P P
Chronic Toxicity 7 , .,TGP38 ' Quarterly Composite Effluent
Effluent Pollutant Scan NC01 Monitor and Report Footnote 8 Footnote 8 Effluent
Dissolved Oxygen 9(mg/L) 00300 Variable Grab U, D
Temperature 9(°C) 00010 Variable Grab U, D
Total Hardness[as CaCO3] 00900 Monitor and Report Quarterly Grab U
(mg/L)10
Page 5of13

Permit NC0081621
Footnotes:
1. Submit discharge monitoring reports electronically using the NC DWR's eDMR application system[See A. (5.)].
2. U: upstream at least 200 feet from the outfall. D: downstream at NCSR 1140. Instream sampling shall consist of grab
samples collected 3/week during June,July,August,and September and weekly during the remainder of the year.
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent values(85%removal).
4. For the first six months after expansion, these parameters will be sampled 3/Week. If no compliance problems occur,
sampling will revert to 2/Week after the first six months.
5. Effluent monitoring and limitation only apply if chlorine or a chlorine derivative is-added to the waste stream during
treatment. The Division shall consider all effluent TRC values reported below 50 µg/E 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 50µg/L.;/
6. Effluent Total Hardness sampling shall be conducted in conjunction with effluent metals for the pretreatment
program. ` /' •
7. Chronic Toxicity(Ceriodaphnia)at 1.2%;quarterly during January,April,July and October[See Section A. (3.)].
8. The Permittee shall perform three Effluent Pollutant Scans during the term of this permit[See'Section A. (4.)]
9. Instream (U & D) sampling is provisionally waived based on the/Permittee's membership'in the Yadkin-Pee Dee
River Basin Association (YPDRBA). If at any time during:the term of this permit, membership is terminated, the
Permittee shall notify the Division immediately, and immediately conduct instream monitoring ag stipulated in this
permit. ,
10. The permittee shall sample instream hardness upstream of the facilitys discharge. The sample shall be•representative of
the hardness in the receiving stream. If the permittee is a member..of a'momitoring coalition program, sampling for
instream hardness may be waived as long as the„monitoring coalition agrees to sample hardness at the nearest upstream
location, at a minimum frequency of quarterly, and the permittee has obtained approval from DWR-NPDES Permitting
Unit that the upstream station being monitored by the`.Coalition is`representative of the receiving stream for this
discharge. The permittee is responsible for submitting instream"hardness test results with its permit renewal application
package. If Coalition membership is cancelled or the Coalition terminates instream hardness sampling at the approved
station, the permittee will immediately notify the`Division and resume-'sampliiig„fOr instream hardness upstream of its
discharge.
•
There shall be no discharge of floating solids or'visible foam in other than trace amounts
•
•
l
/
/ /
Page 6 of 13

Permit NC0081621
A (3.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) [15A NCAC 02B.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 0.60% at 0.15 MGD flow regime and
1.2% at 0.3 MGD flow regime.
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 Effl en,t"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 permittedry.final effluent discharge
below all treatment processes. /,
If the test procedure performed as the first test'of any single quarter results m *failure or ChV
below the permit limit, then multiple-concentration testing shall/be performed at :mi
animum, 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 par;of this,permit condition,will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the rponths in''Which-tests were`'performed, using the parameter
code TGP3B for the pass/fail results and THP3Bbfor the Chrome Value:"Additionally, DWR Form AT-
3 (original) is to be sent to/the.following address:-/
'�,
ti
'� Attention:l`t North4Caolina Division of Water Resources
� �
� .. f Water Sciences Section/Aquatic Toxicology Branch
/ t 1621 Mail Service Center
.\ �Raleigh,N9 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 com lete;accurate include all supporting chemical/physical measurements and all
P �, � ., pP g
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 7 of 13

Permit NC0081621
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"
F
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 ail parameters listed below.
One scan must be performed in each of the following,years:'2020, 2021, and',2022. Analytical methods
shall be in accordance with 40 CFR Part 136 and,shall,'be sufficiently sensitive.'to`•determine whether
parameters are present in concentrations greater than applicable standards and criteria:; Samples should be
collected with one quarterly toxicity test each year`, and,must represent seasonal variation [i.e., do not
sample in the same quarter every year]. Unless otherwise indicated , metals shall be analyzed as "total
recoverable."
Ammonia(as N) Trans-i,2-dichloroethylene'�Bis (2-chloroethyl) ether
Chlorine(total residual, TRC) 1,1'`-dichloroethylene Bois,(2-chloroisopropyl) ether
Dissolved Oxygen 1,2-dichloropropane -,n. Bis (2-ethylhexyl)phthalate
Nitrate/Nitrite ' - . 1,3-dichloropropylene . . °,/4-bromophenyl phenyl ether
Kjeldahl Nitrogen- ',,Ethylbenzene/ Butyl benzyl phthalate
Oil and Grease: -Methyl bromide 2-chloronaphthalene
Phosphorus . ' ,' Methyl chl/
oride 4-chlorophenyl phenyl ether
Total Dissolved Solids /,,'�, Methylene chloride Chrysene
Hardness--p_,� `' ' 1,1,2,2-tetrachloroethane Di-n-butyl phthalate
Antimony"----,, ".�''�, Tetrachloroethylene Di-n-octyl phthalate
/Ars riic ` Toluene Dibenzo(a,h)anthracene
`,
Beryllium •1,1 ,1-trichloroethane 1,2-dichlorobenzene
`Cadmium "\i. --.1,1,2-trichloroethane 1,3-dichlorobenzene
Ch'r`omium Trichloroethylene 1,4-dichlorobenzene
Copper.; , , Vinyl chloride 3,3-dichlorobenzidine
Lead ,;'. . a Acid-extractable compounds: Diethyl phthalate
Mercury(EPA Method' P-chloro-m-cresol Dimethyl phthalate
1631E) .
Nickel 2-chlorophenol 2,4-dinitrotoluene
Selenium 2,4-dichlorophenol 2,6-dinitrotoluene
Silver 2,4-dimethylphenol 1,2-diphenylhydrazine
Thallium 4,6-dinitro-o-cresol Fluoranthene
Zinc 2,4-dinitrophenol Fluorene
Cyanide 2-nitrophenol Hexachlorobenzene
Total Phenolic Compounds 4-nitrophenol Hexachlorobutadiene
Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene
Page 8of13

Permit NC0081621
Acrolein Phenol Hexachloroethane
Acrylonitrile 2,4,6-trichlorophenol Indeno(1,2,3-cd)pyrene
Benzene Base-neutral compounds: Isophorone
Bromoform Acenaphthene Naphthalene
Carbon tetrachloride Acenaphthylene Nitrobenzene
Chlorobenzene Anthracene N-nitrosodi-n-propylamine
Chlorodibromomethane Benzidine N-nitrosodimethylamine
Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine
2-chloroethylvinyl ether Benzo(a)pyrene 'Phenanthrene
Chloroform 3,4 benzofluoranthene /,/Pyrene
Dichlorobromomethane Benzo(ghi)perylene ' ; 1,2;4-trichlorobenzene
1,1-dichloroethane Benzo(k)fluorantlhene
1,2-dichloroethane Bis (2-chloroethoxy)
methane `
Reporting. Test results shall be reported on DWR Form-A MR-PPA1 (or in a form approved by,the
Director) by December 31St of each designated sampling year: The report shall be submitted to the
following address: NC DEQ / DWR / Central Files, 1617 Mail Service Center, Raleigh, North
Carolina 27699-1617.
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 specif ed in Federal Regulation 40 CFR 122.21(j)(5).
The US EPA requires four (4) toxicity tests for a test'organism`other than the test species currently
required in this permit.The multiple species tests should be conducted either quarterly for a 12-month
period prior to submittal•'of the permit renewal application, or four tests performed at least annually in
the four and one half year period prior to,the application. These tests shall be performed for acute or
chronic toxicity, whichever is specified in this permit:The multiple species toxicity test results shall be
filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
//'
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center ,
•Raleigh,North'Carolina 27699-1621
{
Contact the Division's Aq jatic 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.) 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.
Page 9 of 13

• Permit NC0081621
NOTE: This special condition supplements or supersedes the following sections within Part H 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)1
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(,) shall be summar`ized;•for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically,using the interne( Until such time that the state's
eDMR application is compliant with EPA's`\Cross-Medi( ,Electronic Reporting Regulation
(CROMERR), permittees will be required to submit,•'`alldi harge 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,,off.the computer printed eDMR to the
following address: `i : 4
NC DEQ/Division of Water Resources/Water Quality Permitting,Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina27699-1617
l•, ) ,
If a permittee is unable to use the_eDMR_system due to a demonstrated hardship or due to the facility
being physically located' an area-where-=less.th'ari}10 percent of the households have broadband
"a.
access, hentemporary .inwaiver from the NPDES electronic reporting requirements may be granted
and discharge-rimonitoring\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
mafiling address above`,,$ee"How to\Request a Waiver from Electronic Reporting" section below.
a. ' j�
mii Nom:
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 dischargge.'
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 10of13

Permit NC0081621
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: https://www.feder'alregister.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 tranferrable. 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)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Page 11 of 13

Permit NC0081621
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 forgathering the information,
the information submitted is, to the best of my knowledge-and belief true, a``ccurate, and complete. I
am aware that there are significant penalties/for submitting false information, including the
possibility of fines and imprisonment for knowing violations."
5. Records Retention [Supplements Section D. (6.)1 `., ''�,
The permittee shall retain records 'of all Discharge, Monitoring Reports, including eDMR
submissions. These records or copies shall'be maintained'for`a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.41].
___ .` J'
r
,.
'
r
Page 12 of 13

Permit NC0081621
"' j 1 \-\' ) --J' /{ - !l -' (,{__%"1-
1(ii,
,_;.;--,•-.-4`1, 1 1, ) - , i �.
\ -----o -\: • 1
; ,..„6,.--t-,•::;-:- Li %....`fib © �• ;f" :� 1, 1+r• i ,
111
„„' ".• :.*:ir,atilk. •
{\ +J �-•
..,,,,,:,„,,1-44..], .kik,..• :, • • 0V217
^ \ I
7 ; ill
•
\ 1 --,.. -"li
. ` `
: , } \ \ � �
{ f $ �� �LL '.\ V -'f'' ' �
!. :"XINi;' .: ' „„-*--.7 0 -\\\ '-7/ ,,,,., c.,,, ______ ,
0 ____,_
„i.....7 7
,:t':.::::-Y.. ' I r.,_ •j (-..,z, \er-4 ,.._. ) \, //- :, r---:_ft, ,/, ..-, Is,• --::--------:...:
i jt �� o l' r / ,/ • i i
.. \ ,--\ \). -- As...-___...f..7 o ,.. "------ ( f (- ( /(1 .1 :,- ‘‘,.....\\\ \
, k.t-'t,... / .. . . _ C'D-17 '
# t .' \ 1 p lk 4 /7 ,---, ‘
I r\. • 1--( _— -` ,'"�. / , l �,.,,``ti J r <jam- ;• ` `.
1
. , IP / .....y, ...',"......... .z.r.-'
1 1•• \ cl il/r: \\,,,...')\\k-- ,,Citz A j • 1• ( .
Vi) -/ 1 ( soa�) \ ..' I --N\ 0:.___.--- c t:.-..
r 7 / . , .....:7; ........c..7.;-' ).____......,_ _ \-,, , ..„1.! "I't - \..."---_fir c_ni;jf \‘...._.,\.i
Li 1
/ 0 f ,.r,
S:\'`.. N S\;:-'(:,(tf- ------ ,..C(::: „..------1--...
/ Jj
Discharge ,' j
j �� yl� /`SSO i•1 ,.
Location• S , ,Ik7.,\(.7(;.(, 1 >-) c 4,
iOutfall 001 h``--- j_j O 7l + • r (---/__,K,,,,\I
` 1;
. ) ---2/7-c,:g :` 5'7 \--r”. 41 ',12)."7-;;;;;:;:-__i'''' ( 1-S--- \' .‘sNA.rcZ-'ji / ih 1
., , . .'i C (//:\ , -v \ fr--. -0.1-. \--(........9p, ..........„
, _ l\1 ) Gl\,"\ 1---1,,,e-f-i.---- .46L5-1 ---f V ? f\. \,-” ---"\-1 II 4 -
1, >.1\1;.5:,1,f ) N'''j'.'\)O,"-2•—.)',..`','.'..-.
� I
• Muddy Creek f," . NJ�-- ', y�,, ;fl.( j ; ,' ''' I1 1:f \s \ ✓ e'
--,\\i-„_,;)\(N.,/\.(\,i,,:-..'.-..',.'..'-,/'_./'...--,,.,•/,;//,/,,;;%,t7...,,..../,;
,\,(,.,..(.,-,\K-.„;...-,-',:.r1c,--,."\':X--.o;f'7'(:„'I'r,,,..•.--1i--
-.L,:,:.--:-',`;.t..'').,--'',.:'-;-.---.,,' c'.i-
-1,)-1---)"r,e\•-••mN\It„.,,\,'•,....'.,ii..e/tN--
Z-,-"r',.---.1f,-,(—,.N.,_7.-_,,_-7ir0,1—„-__C
hk i '=i ce ✓ r'`�7 _ 5 \-- ,-,‘3
WWTP
.'\
.ib , ` ; w� �.,r, -_f;,J
\ '\ \.. ,,r', .. 7 . .7-) ' ' .
II n) \. v/// 9
II: 1-, - ') '' y,/((V\LS-r-=----'---\-- `35%7 ,--- ,- , I, 72 '‘;`) . R N--- '..0
NC0081621 — Muddy Creek WWTP Facility
Latitude: 35°12'32” Sub-Basin: 03-07-12 Location
Longitude: 80°29'27” River Basin: Yadkin-Pee Dee
Quad Name: Stanfield,N.C. Receiving Stream: Rocky River
Stream Class: C Page 13 of 13 Avith Cabarrus County
Map not to scale