NC0077143_Draft_20170809

Wa ter R esources
ENVIRONMENTAL QUALITY
August 9, 2017
Lisa Smith -Perri, General Manager/ Executive Director
West Carteret Water Corporation
4102 NC Highway 24
Newport, North Carolina 28570
Dear Ms. Smith -Perri:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. JAY ZIMMERMAN
Director
Subject: Review of NPDES Permit DRAFT
Permit NCO077143
West Carteret WTP, Class 1
4104 NC Hwy 24, Newport
Carteret County
Per your request to renew the subject NPDES permit, received February 6, 2017, the Division of
Water Resources (the Division) hereby transmits this draft for your review and comment. Please
review this document carefully to assure your understanding of the permit limits and monitoring
conditions, and to correct errors, if any.
Concurrent with this notification, the Division will solicit public comment on this draft by
publishmg a notice in newspapers having circulation in the general Carteret County area, as
required by the NPDES Program. Please provide your written comments, if any, to me via email
[e-mail]], or write to my attention care of DEQ / DWR / NPDES Program no
later than September 15, 2017. Your written comments are welcome, but not mandatory.
Changes to Your Previous Permit. The Division notes from your renewal application that you
have made no significant changes to your wastewater treatment processes since last renewal.
Accordingly, we have updated your permit format and site map. Please note also that we have
discontinued monitoring for Total Lead, based on your database indicating "not detected" in 110
samples. We have also clarified your treatment system description (see Supplement to Permit
Cover Sheet) and footnotes to the monitoring table [Section A. (1.)].
Finally, please find renewal Special Condition A. (3.) entitled Composite Sampling Requirements,
as discussed with the Wilmington Regional Office (WiRO) during resonance site inspection, May
12, 2017. Future compliance requires composite samples customized specifically to treatment -
system processes, including composites for Whole Effluent Toxicity (WET) testing [see section
permit A. (3.)].
Nothing Compares_
State of North Carolina I Environmental Quality I Water Resources
512 N Salisbury Street 1 1611 Mail Service Center I Raleigh, NC 27699-1611
919 7079000

Lisa Smith -Perri
NPDES Permit Renewal Draft
August 8, 2017
Page 2 of 2
Records show that you have successfully registering with the Electronic Discharge Monitoring
Report (eDMR) Program. Please be reminded that until the state's eDMR application is approved
by the Department as compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), all permittees must continue to submit hardcopy of DMR as backup to eDMR
reporting [see permit section A. (5)].
Following the mandatory 45 -day public -comment period, the Division will review all pertinent
comments, if any, and take appropriate action prior to issuing an NPDES permit final. If you
have questions concerning this draft, please e-mail me [e-mail]], or call my
direct line [phone].
'Joe R. (
NPDES
Enclosure: NPDES Permit NCO077143 kRenewal D
he NPDES Program Files (Draft and Fact Sheet)
ec: WiRO, Jim Gregson (Draft and Fact Sheet)
ATB, Susan Meadows, Cindy Moore (Draft and Fact Sheet)
OCU, Maureen Kinney (Draft and Fact Sheet)

Permit NCO077143
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
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, the
West Carteret Water
is hereby authorized to discharge
4104
to receiving waters c
accordance with effl
II, and III hereof.
This permit shall become
This permit and authorization to
Signed this day
West
12017.
a facility: located at the
in the White Oak River Basin in
and other conditions set forth in Parts I,
ge shall expire at midnight on July 31, 2022.
, 2017
S. Jay Zimmerman, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NCO077143
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the
permit conditions, requirements, terms, and provisions included herein.
West Carteret Water Corporation
is hereby authorized to:
1. continue to operate a Wastewater Treatment System in support of potable water production
[design flow 2.0 MGD] utilizing water -softeners, greensand (iron) filters, and ionic color
filters (sodium cycle IE) with intermittent discharges [discharge a e. 0.083 MGD] generated
as filter backwash and rinse wastewater, this system compris9d of�
• four (4) greensand filters (iron removal) [flow
flow -meter system [optional feed potassium p,
• seven (7) water -softeners with bnne regenerat
[flow capacity 240 gpm each]
• five (5) each ionic color filters with
meter [flow capacity 320 gpm each]
• settling lagoon [70 ft. x 36 ft.�r�
• settling lagoon [52 ft. x 52 ft� f r -w
currently active)
• twelve (12) drying be each 0 ft.
backwash ,�' ^ \ ( 1_11
• appurtenant
chemical additives:
ft.]
t each] with shared
ate ( 04) - disinfection]
id shamed flo - eter
1 an' cs'hared flo -
ng kwi ump station
ation (not
g!filter
controls
o ammonium hydroxide Old j [disinfection]
o chlorine gas (CF) � j [disinfection]
0 ortho polyphosphate (04P [scale inhibitor]
these facilities located at the West Carteret WTP, 4104 NC Hwy 24, Newport in Carteret County,
and
2. discharge from said treatment works via Outfall 001, at the location specified on the attached map,
into the East Prong Sanders Creek [steam index 20-36-6-1], a waterbody currently classified SA
HQW within the subbasin 03-05-03 [HUC: 03020301] of the White Oak River Basin.
Page 2 of 8

Permit NCO077143
Part I
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[ NCAC 02B 0400 et seq. and 02B.0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge backwash/rinse wastewater from Outfall 001. Such discharges
shall be limited, monitored and reported 1 by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
(PARAMETER CODE)
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 2
Flow' MGD 50050
2/1\4onth
Instantaneous
E
Total Residual Chlorine (TRC) 4 50060
13 µg/L
13 µg/L
2/Month
Grab
E
Total Suspended Solids 00530
20.0 mg/L
30.0 mg/L
2/Month
Composite
E
pH 00400
Not < 6.8 or > 8.5 s.u.
2/Month
Grab
E
pH 00400
M thly
Grab
U & D
Salinity, ppt 5 00480
onthly
Composite
E
Salinity, ppt 00480
kithly
Grab
U & D
Conductivity, µmohs/cm 5 00094
Mo t
Composite
E
Conductivity, µmohs/cm 00094
Mon
Grab
U & D
Turbidity, NTU 00070
onthly
Grab
E
Total Dissolved Solids, mg/L 5 70295
Monthly
omposite
E
Ammonia [NH3 as N] mg/L 5 C0610
Monthly
Composite
E
Total Manganese, mg/L 5 IOS
onto ort
arterly
Composite
E
Total Copper, µg26 42
0 'tor ort
uarterly
Composite
E
Total Zinc, µg2 6 01
m or & ort
Quarterly
Composite
E
Acute Toxicity 5,7 3
Mom rt
Quarterly
Composite
E
Footnotes:
1. The Permittee shall report effiu t sing the a troni ischarge Monitoring Program (eDMR)
2 E = Effluent; U = Upstream; D = D tre ( anders Creek at Hwy 24)
3 The penmttee shall report both total flog and duration of each discharge event.
4. Because the Permittee backwashes greensand filters with finish water containing chlorine, the Permittee shall collect
TRC samples during greensand waste discharge events only The Division shall consider compliant all effluent TRC
values reported below 50 µg/L. However, the Pernuttee shall continue to record and submit all values reported by a
North Carolma-certified test method (including field certified), even if these values fall below 50 µg/L
5. This sample shall be collected in accord with Composite Sampling Requirements, section A. (3.).
6. Collect flus sample concurrently with WET -test sampling, as appropriate.
7. Whole Effluent Toxicity (WET) testing, Acute 24-hour Pass/Fail Monitoring. (January, April, July and October)
WET testing shall use mysid shrimp or another approved organism [see A. (2.)] The Permittee shall apply WET tests
pnly to composite samples, as approved by the Division.
Conditions: All samples shall accurately represent the physical and chemical character of a discharge event.
The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 3 of 8

Permit NCO077143
A. (2.) ACUTE TOXICITY PASS/FAIL MONITORING (QUARTERLY)
[ NCAC 02B .0500 et seq.]
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the
North Carolina Procedure Document entitled "Pass/Fail Methodology for Determining Acute Toxicity
in A Single Effluent Concentration" (Revised -December 2010 or subsequent versions). The monitoring
shall be performed as a Mysid Shrimp (Mvsidopsis bahia) 24-hour static test. The effluent
concentration at which there may be at no time significant acute mortality is 90% (defined as treatment
two in the procedure document).. 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.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR -1) for the month in which it was performed, using the parameter
code TGUE. Additionally, DWR Form AT -2 (original) is to be sent to the following address:
Attention: North Carolina Division
Water Sciences Se
1621 Mail Service
Ralcigh, NC 27fA
Completed Aquatic Toxicity Test Forms shall
days after the end of the reporting period for w
accurate and include all supporting chemical/ph
toxicity tests, as well as all dose/resp n��.
must be measured and reported if ne i e
Resources
Toxicology Branch
Scien6ess\Section no later than 30
Test daWshall be complete and
performed in association with the
ie of the effluent toxicity sample
of the waste stream.
Should there be no discha f_ofw �.4he fa 'lity ng a month in which toxicity monitoring is
required, the permittee it omp t th i orm n 1 d at the top of the aquatic toxicity (AT) test
form indicating the faci i ame, pe t ii ber, pipunber, county, and the month/year of the
report with the notation o Flow" e o ent area of the form. The report shall be submitted
to the Water Sciences Sectio a the add e s ci above.
Should the permittee fail to monia month in which toxicity monitoring is required, then
monthly monitoring will begin imm didtely. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements 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 and appropriate environmental controls, shall constitute an invalid test and will
require immediate follow-up testing to be completed no later than the last day of the month following
the month of the initial monitoring.
Page 4 of 8

Permit NCO077143
USE OF A DIFFERENT TEST ORGANISM
The permittee may request the use of a different test organism upon documentation that the alternate
test organism would provide an equal or greater level of protection and is appropriate based on the
characteristics of the discharge and receiving stream. Such documentation would consist of one of the
following:
For saltwater classified streams, a fathead minnow may be assigned as the acute testing
species if the salinity of the receiving stream at the point of discharge is <5 ppt throughout
the tidally influenced cycle. This determination may be based on the best professional
judgment of DWR staff or data collection provided by the permittee and approved by
DWR staff. This evaluation should include vertical profiles of salinity/conductivity
measurements at both high tide and low tide over several 24 -hr cycles.
2. Three consecutive "side-by-side" tests with results indicating that the alternate test
organism is as or more sensitive to the facility's effluent. Each test series would consist
of two separate toxicity tests conducted on the same sample of effluent with the length
of exposure specified by the permit, the only difference between the tests being the
organism used.
3. An alternate plan developed by the permittee and approve^ yAe Aquatic Toxicology
Unit that demonstrates an equal level of protection iso er54y the test organism.
For items 2 and 3, it must also be demonstrated that viab
available for that organism and standardized testing meth
validated. This demonstration should meet guidance Pr�
012, "Short Term Methods for Estimating the Acute Tox
Freshwater Organisms, Fifth Edition 2002". Rs%�,
documentation should be sent to North Carolina v
Section at the address listed above.
A. (3.) COMPOS:
[G.S. 143-21
stand'a d'zed culture techniques are
gies hav en developed and
by EPA in ction 6 of EPA -821 -R -02 -
`rt ojr
#fluentsa'IWaters to
ferenttestorgyd supporting
of Resources, Environmental Sciences
0
Consideringthe coni lexiti s f the ext `t tment systems and their operation, the Permittee
p � g �� Y
shall implement two (2) separat compos't� sampling protocols (see 1 and 2 below). The Permittee
shall compile 24-hour composit s co bning flow -proportional grab -samples specific to given
discharge events. To ensure that eat cowposite sample accurately represent a 24-hour discharge
period, the Permittee may collect more than one grab sample of each event.
The Permittee shall compile two (2) different composite samples per month, in accord with the
following instructions:
1. One 24-hour composite shall combine each of:
a. color -filter discharge (flow -proportional grabs), and
b. softener discharge (flow -proportional grabs).
2. Another 24-hour composite shall combine flow -proportional grabs of
each softener -regeneration step.
3. WET -test analyses shall alternate between the color -filter composite
samples and the softener composite samples.
4. Records and descriptions of all manual composites shall be kept on file
and onsite, available for review by the Wilmington Regional Office.
Page 5 of 8

Permit NCO077143
A. (4.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports. The final NPDES Electronic Reporting Rule was adopted and became effective on
December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)]
The permittee shall report discharge monitoring data electrons aily sing the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet api tion.
Monitoring results obtained during the previous i
submitted electronically using eDMR. The eDM
monitoring data and submit DMRs electronically
eDMR application is compliantwith EPA' os
(CROMERR), permittees will be required t �')
electronically using eDMR and wil requi a \t
signing, and submitting one si d o ' ' 1 an
following address:
NC DEQ / Division o fW er est
ATTENTION: Ce tr 1 -Tiles
1617 Mail Service C r
Raleigh, North Carolin 7,699-16
Tgii s Shall be arized for each month and
s stem allows pe fitted facilities to enter
the 'et. t such time that the state's
.q 1 E=nic Rep ' g Regulation
t all tl s arge monitorin data to the state
le e eDMR submission by printing,
3py�of.�he puter printed eDMR to the
ty Permitting Section
If a permittee is unable to usfk
e eD1VI system due to a demonstrated hardship or due to the
facility being physicaIR 'lly locate i an area where less than 10 percent of the households have
broadband access, then a tempor �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 rase 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:
Page 6 of 8

Permit NC0077143
• 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.
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. Instructi rfs\n how to access and use the
.
appropriate electronic reporting tool will be available as wel I rmation on EPA's NPDES
Electronic Reporting Rule is found at: htt ://www2.e a. v/ liance/final-national- ollutant-
Electronic submissions must start by the dates
above.
How to
The permittee may seek a ten
electronic reporting waiver, a
the Division. Request or
the Division for w ' en dDD c
required under this p it to begi�'
temporary waiver sl exceed
data and reports shall be itted
and is granted a new tempo ,ryelc
reporting waivers are not tran§e b
may submit monitoring data an 1S
reporting waiver request is effective.
the "Reportinquirements" section
the Division. To obtain an
r�u t firs s mit an`elcctronic reporting waiver request to
ect c re o ing waivers must be submitted in writing to
six 1 prior to the date the facility would be
I ting moirik ring data and reports. The duration of a
rNd shall thereupon expire. At such time, monitoring
i lly to the Division unless the permittee re -applies for
is reporting waiver by the Division. Approved electronic
Only permittees with an approved reporting waiver request
on paper to the Division for the period that the approved
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
Page 7 of 8

Permit NC0077143
3. Si2natory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.)
4.
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part
II, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall
make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF
CERTIFICATION WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and all at nts were prepared under my
direction or supervision in accordance with a system desi ed t assure that qualified personnel
properly gather and evaluate the information submitte . ed y inquiry of the person or
persons who manage the system, or those persons d' ec respons' for gathering the
information, the information submitted is, to the st f my knowled d belief, true, accurate,
and complete. I am aware that there are significant a altie submz z false information,
including the possibility of fines and impri �Os� ment for wi violations '
The permittee shall retain re
submissions. These records
date of the report. Thi5.p
122.41].
Page 8 of 8
vmports, including eDMR
eriod of at least 3 years from the
of the Director at any time [40 CFR

West Carteret
Water Corporation WTP
Receiving Stream: E. Prong of Sanders Creek Stream Segment: 20-36-6-1
Drainage Basin: White Oak River Basin Sub -Basin: 03-05-03
Stream Class: SA-HQW HUC: 03020301
State Grid/USGS Ouad: 131NW / Salter Path, NC
Facility
Locates
not to scale
ENort]hNPDES Permit NC0076783
Carteret Count