NC0088668_Permit Issuance_20161110

PAT MCCRORY
Gol'entor
DONALD R. VAN DER VAART
secreia,y
S. JAY ZIMMERMAN
Director
Water Resources
ENVIRONMENTAL OUALITY
November 10, 2016
Mr. Clint Berry, Utility Director
Hyde County Water System
P. O. Box 66
Swan Quarter, North Carolina 27885
Subject: Final NPDES Permit Renewal
Permit NCO088668
Engelhard RO WTP
Hyde County
Class II Facility
Dear Mr. Berry:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007
(or as subsequently amended).
This final permit contains the following changes from your previous permit:
• Removed the effluent monitoring for Total Arsenic, Total Chlorides, Total Copper, Total
Fluoride, Total Iron, Total Zinc, Total Dissolved Solids, and Temperature.
• Removed the special condition A. (3) OPTIONAL SENDSITIVITY TESTING.
• Reduced the effluent monitoring for Conductivity, Salinity, Turbidity, Total Nitrogen, and
Total Phosphorus to quarterly.
• Reduced the instream monitoring for Conductivity, NH3-N, pH, Salinity, and Temperature
to quarterly
• Added a new special condition A. (3) ELECTRONIC REPORTING OF MONITORING
REPORTS with a December 21, 2016 compliance date.
• Made a technical correction to the pH lower limit.
• Updated the Water Science Section/Aquatic Toxicology Branch mailing address to its new
address in special condition A. (2) CHRONIC TOXICITY MONITORING.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within
thirty (30) days following receipt of this letter. This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-
6714). Unless such demand is made, this decision shall be final and binding.
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, North Caroline 27699-1617
919 807 6300

Page 12
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or any other Federal, State, or Local governmental permits that may be required.
If you have any questions concerning this permit, please contact Ron Bent' at [phone] or
via email at [e-mail].
Sincerely,
S. Jay Zimmerman, P.G.
Director, Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
DWR / Washington Regional Office / Water Quality
Ecopy: DWR / Aquatic Toxicology Branch / Susan Meadows
DMF / Shellfish Sanitation / J. D. Potts

Permit NCO088668
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 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 Pollution Control Act, as amended,
Hyde County
is hereby authorized to discharge wastewater from a facility located at the
Engelhard Reverse Osmosis WTP
13692 North Lake Road
Engelhard, NC
Hyde County
to receiving waters designated as Far Creek in the Tar -Pamlico 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 ............................. December 1, 2016.
This permit and authorization to discharge shall expire at midnight on November 30, 2021.
Signed this day .......... November 10, 2016.
W. Jay Zimmerman, P. G.
Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NCO088668
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.
Hyde County
is hereby authorized to:
1. Continue to operate a Reverse Osmosis (RO) Water Treatment Plant with a discharge of RO
concentrate wastewater. This facility currently has a potable design capacity of 0.300 MGD and a
maximum, monthly average wastewater discharge in the most recent three years of 0.052 MGD.
Water and wastewater treatment consist of:
- Influent anti -scaling and chemical treatment systems
- Influent cartridge filter
- Reverse Osmosis unit with booster pump
- Concentrate flow meter with recorder
- Submerged single port diffuser with connecting pressure piping.
This facility is located at 13692 North Lake Road, Engelhard, NC, Hyde County.
2. Discharge from said treatment works into Far Creek, classified SA, HQW waters in the Tar -Pamlico
River Basin, at the location specified on the attached map.
Page 2 of 8

Permit NCO088668
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
a. During the period beginning on the effective date of this permit and until expiration, the Permittee
is authorized to discharge Reverse Osmosis concentrate wastewater through a submerged, single
port diffuser in Outfall 001. Such discharges shall be limited and monitored I by the Permittee
as specified below: .
EFFLUENT
CHARACTERISTICS
LIMITS .
MONITORING REQUIREMENTS
Monthly
Avera a
Daily
Maximum .
.- Measurement
Fr , uenc
Sample .
T e.
Sample 2
Location
Flow
Daily
Continuous
E
pH
Not greater than 8.5 S.U.
nor less than 6.8 S.U.
2/ Month
Grab
E
pH, S.U.
Quarterly
Grab
U, D
Dissolved Oxygen, mg/L
Monthly
Grab
E, U, .D
Ammonia as Nitrogen, mg/L
Monthly
Grab
E
Ammonia as Nitrogen, mg/L
Quarterly
Grab
U, D
Salinity, ppt
Quarterly
Grab
E, U, D
Conductivity, µmhos/cm
Quarterly
Grab
E, U, D
Temperature, °C
Quarterly
Grab
U, D
Turbidity, NTU
Quarterly
Grab
E
Total Nitrogen (TN), mg/L
TN= 02-N + NO3-N + TKN
Quarterly
Grab
E
Total Phosphorus, mg/L
Quarterly
Grab
E
Chronic Toxicity 3
Quarterly
Grab
E
Footnotes:
1. Starting on December 21, 2016, begin submitting Discharge Monitoring Reports
electronically using NC DWR's eDMR application system. See Special
Condition A. (3).
2. E = Effluent, U = 33 feet Upstream from the diffuser discharge location, D= 33
feet Downstream of the diffuser discharge location.
3. Chronic Whole Effluent Toxicity Testing using Mysid Shrimp at 1.9%; February,
May, August and November; refer to Special Condition A. (2). Toxicity sample
shall be taken in conjunction with all other quarterly samples.
b. All samples collected shall be taken during a representative discharge event.
c. There shall be no discharge of floating solids or visible foam in other than trace amounts.
d. The diffuser shall be operated in sufficient water depth and in a method such as not to create
surface turbulence.
Page 3 of 8

Permit NCO088668
A. (2) CHRONIC TOXICITY MONITORING (Quarterly)
[I 5A NCAC 02B .0500 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Mysidopsis bahia at an effluent concentration of 1.9%.
The permit holder shall perform at a minimum, quarterly monitoring using procedures described below
to establish compliance with the permit condition. The tests will be performed during the months of
February, May, August, and November. 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. The test procedure will be based on EPA Method 1007.0, Mysid,
Mysidopsis bahia, Survival, Growth, and Fecundity Test, as described in Short -Term Methods for
Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms,
Third Edition, EPA-821-R-02-014. The procedure will be performed as written with the following
exceptions:
• The test treatments will consist of a control and a 1.9% effluent concentration.
• Mortality for pass/fail tests will be evaluated using the t test described in Section 11.3 in
Methods for Measuring the Acute Tonicity of Effluents to Freshwater and Marine
Organisms, Fifth Edition. EPA-821-R-02-012, October 2002, applying an alpha level
of 0.05.
• The growth endpoint for pass/fail tests will be determined using Appendix G of Short -
Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to
Marine and Estuarine Organisms, Third Edition, EPA-821-R-02-014, October 2002,
applying an alpha level of 0.01.
• Mortality and growth endpoints for multiple -concentration tests will be determined using
hypothesis testing as described in EPA Method 1007.0, Mysid, Mysidopsis bahia,
Survival, Growth, and Fecundity Test, as described in Short -Term Methods for
Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and
Estuarine Organisms, Third Edition, EPA-821-R-02-014, October 2002.
• Fecundity will not be evaluated.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed. For pass/fail results,
report using the parameter code TGP3E and the DWR Form AT4 (original), which is to be sent to the
address below.
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 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.
Page 4of8

Permit NCO088668
(Continued A. (2) CHRONIC TOXICITY MONITORING)
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring
will be required during the following month. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above. 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.
Page 5 of 8

Permit NCO088668
A. (3) 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 and specify that, if a state does not establish a system to receive such submittals, then permittees
must submit monitoring data and reports electronically to the Environmental Protection Agency (EPA).
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 MO.) and Section E. (5.) (a)1
Effective December 21, 2016, the permittee shall report discharge monitoring data electronically
using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1,1.1, 2, 3) or alternative
forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address
above. See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Page 6 of 8

Permit NCO088668
(Continued A. (3) ELECTRONIC REPORTING OF MONITORING REPORTS)
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.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity
for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at:
http://www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-s, stem-npdes-
electronic-reportina-rule.
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reuortinsr
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:
b=:Hdgg.nc.gov/about/divisions/water-resources/edmr
Page 7of8

Permit NC0088668
(Continued A. (3) ELECTRONIC REPORTING OF MONITORING REPORTS)
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. (I 1.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (I 1)(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:
bqp://dgg.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
7 certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations. "
5. Records Retention [Supplements Section D. (6.)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.41).
Page 8 of 8

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SCALE: 1 24 000
USGS Quad: E35SW Engelhard East, NC
Outfall Facili
Latitude: 350 30' 45.1"N 350 30' S1.7" N
Longitude: 75° 58' S4.3" W 75159' 19.3" W
-J
Stream Class: SA, HQW
North
Facility Location
Subbasin: 03-03-08 HUC: 03020105
Engelhard RO WTPNC0088668 —7
Receiving Stream: Far Creek
Hyde County

svptodl7 014,44,J- Ult lefoevw
DEQ/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES Permit NCO088668
Facility Information
Applicant/Facility
Name:
Engelhard RO WTP
Applicant Address:
P. O. Box 66; Swan Quarter, NC 27885
Facility Address:
13692 North Lake Road; Engelhard, NC 27824
Permitted Flow
n/a
Type of Waste:
+ 99 % RO reject water
Facility/Permit Status:
Class II /Active; Renewal
County:
Hyde County
Miscellaneous
Receiving Stream:
Far Creek
Stream Classification:
SA, HQW
Subbasin:
03-03-08
Index No.
29-70-(4)
Drainage Area (mi2):
n/a
HUC:
03020105
Summer 7Q10 (cfs)
Tidal
303(d) Listed?
Yes, loss of
shellfish use 2006
Winter 7Q 10 (cfs):
Tidal
Regional Office:
Washington
30Q2 (cfs)
Tidal
State Grid / USGS
Quad:
E35SW
Engelhard East, NC
Average Flow (cfs):
Tidal
Permit Writer:
Ron Berry
IWC (%):
(Modeled) 1.9%
Date:
6/28/16
Background for Permit Renewal
Hyde County began operating a new reverse osmosis (RO) drinking water treatment facility, 0.30 MGD
capacity, in January 2011. The facility serves Engelhard and the surrounding Hyde County area. The RO
facility operates on the average 12 hours a day with a maximum, monthly average discharge in the last three
years of 0.052 MGD. Except for anti-scalant additive no other chemicals are added to the incoming well
water.
An Authorization to Construct (AtoC) approval was issued in November 2010 to install the effluent force
main and a submerged single port diffuser in Far Creek, an Engineer Certificate was received in December
2010 indicating completion of the AtoC. The diffuser design and selected location in Far Creek was based
on a CORMIX model reviewed by the Division in 2008. The CORMIX model yielded an IWC of 1.9%
with the inner mixing boundary less than 33 feet from the diffuser.
This permit last renewal was issued in May 2011 and applied the October 2009 revised WTP strategy for a
RO WTP facility. The facility was still under construction when the permit renewal was developed. The
permitted flow limit and TRC requirement were removed. Turbidity monitoring was added. The monitoring
frequency for instream pH was reduced to monthly.
For this permit renewal the Permittee has requested removal of effluent monitoring for Temperature, DO,
Arsenic, Copper, Iron, Chlorides, Fluoride, Zinc, Salinity, TDS, TN, and TP; removal of all instream
monitoring.
RO reject water is conveyed during RO operation via the effluent force main line to the submerged single
port diffuser in Far Creek, a class SA, HQW water in the Tar -Pamlico river basin. The NC Division of
Marine Fisheries list this discharge location as a PNA. This segment of Far Creek continues to be impaired
based on shellfish harvesting restriction which begun in 2006.
Fact Sheet
NPDES NCO088668
Pagel of 3

Effluent Characteristics
DMR data was reviewed from January 2013 to March 2016 and the effluent data is summarized in Table I:
Table I: DMR Effluent Data Summary
Parameter
UOM
Avera a
Maximum
Minimum
Flow(Monthly Avg)
MGD
0.0307
0.052
0.019
H
S.U.
8.1
8.5
7.9
Temperature
°C
18.82
21.6
9.6
Salinity
t
4.928
6.54
0.56
Conductivity
mhos/cm
9297.7
26300
1130
DO
m
2.438
10.64
0.75
NH3-N
m
6.492
9.44
< 0.04
Turbidity
NTU
3.81
17.0
< 1
IDS
m
5744.9
25720
4570
Total Arsenic
No detects, < 5
Total Copper
L
10.3
16
< 10
Total Chlorides
m
1370.6
4100
336
Total Iron
119.0
456
< 10
Total Fluoride
m
4.81
6.8
1.1
Total Zinc
L
25.0
364
< 10
TN
m
9.983
13.37
8.34
TP
m
1.011
1.32
0.52
Evaluation of Compliance
There was one pH limit violation since June 2011. No fines were assessed. All quarterly mysid shrimp
chronic toxicity at 1.9% effluent concentration test were passed. The Washington Regional Office found
no concerns during its last site inspection and supports renewal of this permit.
Evaluation of Instream Data
Conductivity, salinity, NH3 N, DO, temperature, and pH were monitored at two designated instream
location (upstream/downstream) adjacent to the submerged diffuser CORMIX defined mixing zone.
Because this is a tidal receiving stream the actual background value for each parameter could be either the
upstream or downstream value. For the purposes of evaluating impacts, the background data value was
determined for each monitoring event.
Effluent impacts to instream conductivity, temperature, salinity, and pH impacts were not significant. The
instream DO indicate seasonal variation and with some influence from the consistent low effluent DO
indicated. There was one instance of the receiving stream DO being below the minimum saltwater water
quality standard of 5 mg/L. The receiving stream background NH3-N averaged 0.12 mg/L and the increased
instream NH3-N concentration averaged 0.28 mg/L. There were two instances of the increased receiving
stream NH3-N being above 1 mg/L, maximum 1.34 mg/L.
Reasonable Potential (RP) Analysis
New North Carolina water quality standards were approved by US EPA in 2016 and are being applied in
this analysis. A RP analysis was conducted based on the CORMIX model IWC of 1.9% and toxicant data
collected from January 2013 through March 2016. Based on this analysis the following permitting actions
are proposed for this permit.
No Limit or Monitoring:
- The following parameters will not receive a limit or monitoring, since they did not demonstrate RP
to exceed applicable water quality standards/criteria and the maximum predicted concentration was
< 50% if the allowable concentration: Total Copper, Total Zinc
- The following parameter will not receive a limit or monitoring, since all reported values were no
detects: Total Arsenic
A spreadsheet of the RP analysis results is attached to this fact sheet.
Fact Sheet
NPDES NCO088668
Page 2 of 3

Other Permit Changes
Total Chlorides, Total Iron, and Total Fluoride do not have saltwater water quality criteria, thus, are no
longer parameters of interest and their monitoring will be removed from this permit. TDS variation is
traceable through conductivity monitoring so TDS monitoring will be removed.
It is anticipated North Carolina will implement a NH3-N saltwater water quality criterion in the next
Triannual review and may impact this permit. To determine an instream acute and chronic NH3-N water
quality criterion, the instream temperature, pH, and salinity will be required. Instream monitoring for NH3-
N, temperature, pH, and salinity will continue with the monitoring frequency reduced to quarterly. Since
the effluent NH3-N consistently exceeded 3 mg/L, monthly monitoring for effluent NH3-N will be
continued.
Effluent temperature monitoring is no longer required and the special condition A. (3) OPTIONAL
SENSITIVITY TESTING is no longer applicable, thus, these requirements will be removed.
The Tar -Pamlico River Basin is designated as NSW, therefore, TN and TP monitoring will continue but
will be reduced to quarterly.
Effluent conductivity. salinity, and turbidity continue to be parameters of interest and their monitoring
frequency will be reduced to quarterly to coincide with the instream monitoring frequency.
Since this discharge is into a class SA water, NC Shellfish Sanitation will review and provide approval for
this permit.
Summary of Permit Changes
The following will be incorporated into this permit:
• Removed monitoring for Total Arsenic, Total Chlorides, Total Copper, Total Fluoride, Total
Iron, Total Zinc, and TDS.
• Removed effluent monitoring for temperature.
• Removed special condition A. (3) OPTIONAL SENSITIVITY TESTING.
• Reduced effluent monitoring for conductivity, salinity, turbidity, TN, and TP to quarterly.
• Reduced instream monitoring for temperature, salinity, pH, NH3-N, and conductivity to
quarterly.
• Added special condition and footnote for eDMR implementation.
• Made technical correction to pH limit.
• Updated chronic toxicity special condition narrative.
• Updated permit narrative to remove Authorization to Construct references.
Proposed Permit Schedule
Draft Permit to Public Notice: June 29, 2016
Permit Scheduled to Issue: September 2016
NPDES Contact
If you have questions regarding any of the above information or on the attached permit, please contact Ron
Berry at (919 807-6396 or email [e-mail]. /
NAME: DATE:
Fact Sheet
NPDES NC0088668
Page 3 of 3

Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow Qw MGD
1 )
Receiving Stream Iving tr am
Stream Class
cfs 7 10s Q ( )
7Q10w cfs)
30Q 2 cfs QA cfs 1Q 10s cfs e
MODEL ACUTE IWC /o
MODEL CHRONIC IWC %
Data Source(s)
EngelHard RO WTP
II
NCO088668
001
0.052
Far Creek
SA
Modeled, IWC % defined
:.�V'.41��S1:Lf'•$1W�::�:�ilSiiH]riiN::S:":•:•:}:•:•:;.:}:;::• :•:
.............. .................... ........................
►.Ek1:::::. .
1.90
1.90
DM Data from 1/1/13 to 3131/16
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
:::.:::;;..
.................
..............C........
6........5}
...:......6.
.........:::::..::...
l.L....
:.:.:::....
......ad <; ::;
'
'l
::::::.
r•:
:
Its#iuEr V
:t:::
................. :. ::.........:.......
"atiat`
.........
.
: ........::;:::t?L';:::::::;<::.::;:.::.::.:::::.::::::::.:;.
;:;...:.
..
.tom
��� :•:::
t •::.:
;;::.::.:;;.
;-;ugfL
t..:,.:
ayae
•-•�••::r•';i:}
.:
(��� j�
. .........
2t�](��
....
. �'r:vl ;•:'
Y.:::•.,:.
:::
.
:.•r.::. �.•.w.
::
:::::..:......... •::.;•.; •:.;;::.;•.: •:.:.:..:
................
:..................... Y�
i Eti3
.
::.
................
.......:..:
........S:::::G:
::
,
............ .............................:.............:....:..:...:::..::.::...........:.:.::.::.::::::..:.
1.....:....................:
.:.::.::.vg
g....
:::<•
<~
u .L...
_..
NOTE: The aquatic life chronic and acute S o e W for several metals
Q ra m t l r calculated based on conversion
a EPA nv rslon
factors, see "Diss. SW stds. As TM" for more details and summary of calculated WQS.,
9595 SALTWATER RPA w diss factors 20167.x1sm,input
11/1/2016

Saltwater - Total Recoverable Metal Standards for Aquatic Life Protection
The NC 2007-2015 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.
Table 1. NC 2007-2015 Triennial Review Dissolved Metals Water Quality Standards converted to Total Recoverable Metals For Aquatic Life Protection
Parameter
Acute SW, ug/l
(Dissolved)
Chronic SW, ug/l
(Dissolved)
EPA Conversion Factors for
Dissolved Metals
Acute SW, ug/l
Chronic SW, ug/l
Saltwater CMC
(Acute)
Saltwater CCC
(chronic)
(Total Metal)
(Total Metal)
Arsenic
69
36
1
1
69
36
Cadmium
40
8.8
0.994
0.994
40.2
8.9
Chromium VI
1100
50
0.993
0.993
1107.8
50.4
Copper
4.8
3.1
0.83
0.83
5.8
3.7
Lead
210
8.1
0.951
0.951
220.8
8.5
Nickel
74
8.2
0.99
0.99
74.7
8.3
Silver
1.9
0.1
0.85
—
2.2
Zinc
90
81
0.946
0.946
95.1
85.6
Table 1 Notes:
1. SW= Saltwater
2. EPA Conversion Factors from US EPA website, National Recommended Water Quality Criteria - Aquatic Life Criteria Table;
https://www.epa.gov/wgctnational-recommended-water-quality-criteria-aquatic-life-criteria-table#a
The dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is
dissolved to the same extent as it was during EPA's criteria development for metals.

EngelHard RO WTP
NCO088668 Saltwater RPA 95% Probablity/95% Confidence
MAXIMUM DATA POINTS = 58
Qw(Mi= 0.05
WWTP/WTP Class: 11
1Q10S (cfs)= Modeled, IWC %defined
IWC @ IQIOS = 1.9000%
7QIOS(cfs)= Modeled, IWC %defined
IWC @7QIOS= 1.9000%
7Q10W (cfs)= Modeled, IWC %defined
IWC @ 7QIOW = 1.9000%
301 (cfs)= Modeled, IWC %defined
IWC @30Q2= 1.9000%
Avg. Stream Flow, QA (cfs) = Modeled, IWC % defined
IWC @ QA = 1.9000%
Receiving Stream: Far Creek
Stream Class: SA
Outfall 001
Qw = 0.052 MGD
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS HOW OR ORW.
PARAMETER
NC STANDARDS OR EPA CRITERIA
ur
REASONABLE POTENTIAL RESULTS
TYPE
(1)
o
°D
i
RECOMMENDED ACTION
Applied
Chronic Acute
❑ # Det. Max Fred Cw Allowable Cw
Standard
Acute (SW): 1,815.8
Arsenic
C
IS SW(7QIOs) 34.5
ug/L
39 0
NO DETECTS
_
Chronic (SW): 947A
__________________________
Max MD_L=5
Arsenic
C
5 HH(Qavg)
ug/L
Chronic (HH):---263.2 -------------------
_ _ _
No detects
Max MDL= 5
Acute: 152.63
Copper
NC
L85 SW(7QIOs) 29
uv 1
39 4
17.44
_ _ _ _____ _ __
Chronic 97.37
No RPA,Predicted Max <50%of Allowable Ltv
No value> Allowable Cw
No Monitoring required
Acute: 2502.6
Zinc
NC
42.8 SW(7Q10s) 47.55
,�_•
19 30
476.84
L
Chronic: 2252.6
No RPA, Predicted Max < 50% of Allowable Cw
value> Allowable Cw
- No Monitoring required
9595 SALTWATER RPA w diss factors 20167.xlsmi
Page 1 of 1 11/1/2016

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
REASONABLE POTENTIAL ANALYSIS - DATA
. Mp=um data
polnts = 58
Date
Data
BDL=1/2DL
Results
1/9/2013
15
15
Std Dev.
2.5942
2(7/2013
<
10
5
Mean
5.8205
3/14/2013
<
10
5
C.V.
0.4457
4/4/2013
<
10
5
n
39
5/9/2013
<
10
5
6/6/2013
<
10
5
Mult Factor=
1.0900
7/2/2013
<
10
5
Max. Value
16.00 ug/L
8/8/2013
11
11
Max. Pred Cw
17.44 ug/L
9/11/2013
<
10
5
10/1/2013
<
10
5
111V2013
<
10
5
12/5/2013
<
10
5
1/9/2014
16
16
2/6/2014
<
10
5
3/6/2014
<
10
5
4/3/2014
<
10
5
5/8/2014
<
10
5
6/5/2014
<
10
5
7/9/2014
<
10
5
8/7/2014
<
10
5
9/4/2014
<
10
5
10/72014
<
10
5
11/02014
<
10
5
12/42014
<
10
5
V712015
<
10
5
2/5/2015
<
10
5
3/4/2015
10
10
4/92015
<
10
5
5/5/2015
<
10
5
6/4/2015
<
10
5
7712015
<
10
5
8/5/2015
<
10
5
9/3/2015
<
10
5
10/12015
<
10
5
11/52015
<
10
5
1202015
<
10
5
1/72016
<
10
5
2/2/2016
<
10
5
3/3/2016
<
10
5
Zinc
Values Ihen'COPV
. Maximum 4ata
polnts = 68 -
Date
Data
BDL=1/2DL
Results
1
1/9/2013
10
10
Sid Dev.
76.6192
2
2/7/2013
14
14
Mean
32.1707
3
3/14/2013
20
20
C.V.
2.3816
4
4/4/2013
14
14
n
41
5
5/812013
16
16
6
6/6/2013
17
17
Mult Factor=
1.2700
7
712/2013
20
20
Max. Value
364.0 ug/L
8
8/8/2013
<
10
5
Max. Pred Cw
462.3 ug/L
9
9/11/2013
<
10
5
10
10/1/2013
<
10
5
11
11/7/2013
12
12
12
12/5/2013
<
10
5
13
119/2014
38
38
14
2/6/2014
21
21
15
3/6/2014
10
10
16
413/2014
19
19
17
5102014
15
15
18
6/5/2014
19
19
19
7l9/2014
<
10
5
20
8!7/2014
16
16
21
9/42014
22
22
22
10t72014
22
22
23
11/62014
<
10
5
24
12/4/2014
364
364
25
Vl72015
<
10
5
26
2/6/2015
52
52
27
3/4/2015
14
14
28
4/92015
19
19
29
5/5/2015
21
21
30
6/4/2015
<
10
5
31
7172015
13
13
32
8/52015
13
13
33
9/3/2015
12
12
34
1011/2015
11
11
35
11/52015
16
16
36
122/2015
<
10
5
37
1/7/2016
12
12
38
2122016
13
13
39
3/3/2016
20
20
40
25
25
41
364
364
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
New 9595 SALTWATER RPA20162.xlsm.data
Date}

Tar -Pamlico River Basin
> AU Number Name
Category Rating Use
2012 North Carolina 303(d) List -Category S
10-digit Watershed 0302010501
Description
Reason for Rating
Parameter
Lake Mattamuskeet-Rose Bay -Pamlico Sound
Length or Area Units Classification Category
Year
> 29-42.1a Germantown Bay From source to a line starting at mouth of Long Creek extending across 179.7 5 Acres SA;HQW 5
Bay to a point 77 meters south of Midgette Creek
5 Impaired Shellfish Harvesting Loss of Use Shellfish Growing Area -Prohibited 2006
... , _. 12-digit5ubwatershed 030201059104,,E
> 29-49a Swanquarter Bay DEH closed area west of Swanquarter 136.2 S Acres SA;ORW 5
5 Impaired Shellfish Harvesting Loss of Use Shellfish Growing Area -Prohibited 2008
Tar -Pamlico River Basin 10-digit Watershed 0302010502 Pamlico Sound -Ocracoke Inlet
amlico Sound -Ocracoke Inle
> 29-(40.5)e PAMLICO RIVER AND DEH closed areas adjacent to Ocracoke 48.9 5 Acres SA;HQW 5
17Jii1111LeIes*1011 C
5 Impaired Shellfish Harvesting Loss of Use Shellfish Growing Area -Prohibited 2006
Tar -Pamlico River Basin 10-digit Watershed 0302010503 Pamlico Sound -Hatteras Inlet
L.. 12-digit Subwatershed 030201050301 Otter Creek -Far Creek ".
> 29-66 Middle Town Creek From source to Pamlico Sound
71.5 S Acres SA;HQW
5 Impaired Shellfish Harvesting Loss of Use Shellfish Growing Area -Prohibited 2006
> 29-67 Cedar Creek From source to Pamlico Sound
12.2 5 Acres SA;HQW
5 Impaired Shellfish Harvesting Loss of Use Shellfish Growing Area -Prohibited 2006
> 29-69 Lone Tree Creek From source to Pamlico Sound
1.8 S Acres SA;HQW
5 Impaired Shellfish Harvesting Loss of Use Shellfish Growing Area -Prohibited 2006
> 29-70-(4) Far Creek From a line extending due north and due south across Far Creek at flash 389.5 S Acres SA;HQW
beacon N9 to Pamlico Sound
5 Impaired Shellfish Harvesting Loss of Use Shellfish Growing Area -Prohibited 2006
Friday, August 24, 2012 Approved by EPA August 10, 2012 Page 109 of 170

AU Number: J AU Name:
AU Description:
Tar -Pamlico River Basin
Length Area: AU Units: Classification:
29-70-(4) Far Creek 389.5 S Acres SA;HQW
From a line extending due north and due south across Far Creek at flash beacon #9 to Pamlico Sound
RCategory:
ACS:
Parameter Of Interest:
Collection Year:
303(d) yr:
5
EC
Shellfish Growing Area -Prohibited (Fecal, SH, SA)
2010
2006
4t
EC
Fish Tissue Mercury (Nar, FC, NC)
2012
2008
29-41-2-4 Fate Cove
Entire Cove
14.6 S Acres SA;HQW
RCategory:
ACS:
Parameter Of Interest:
Collection Year: 303(d) yr:
1
MC
Shellfish Growing Area -Approved (Fecal, SH, SA)
2010
4t
EC
Fish Tissue Mercury (Nar, FC, NC)
2012 2008
29-41-4 Flat Cove 11.0 SAcres SA;HQW
Entire Cove
IRCategory: ACS: Parameter Of Interest: Collection Year: 303(d) yr:
1 MC Shellfish Growing Area -Approved (Fecal, SH, SA) 2010
4t EC Fish Tissue Mercury (Nar, FC, NC) 2012 2008
29-42-1a Germantown Bay 179.7 S Acres SA;HQW
From source to a line starting at mouth of Long Creek extending across Bay to a point 77 meters south of Midgette
Creek
RCategory:
ACS:
Parameter Of Interest:
Collection Year:
303(d) yr:
5
EC
Shellfish Growing Area -Prohibited (Fecal, SH, SA)
2010
2006
4t
EC
Fish Tissue Mercury (Nar, FC, NC)
2012
2008
29-42-1b Germantown Bay 319.5 S Acres SA;HQW
Entire Bay except DEH closed area in northern part of bay
RCategory:
ACS:
Parameter Of Interest:
Collection Year: 303(d) yr:
1
MC
Shellfish Growing Area -Approved (Fecal, SH, SA)
2010
4t
EC
Fish Tissue Mercury (Nar, FC, NC)
2022 2008
29-51 Great Island Narrows 1,809.4 S Acres SA;ORW
From Juniper Bay to Swanquarter Bay
IRCategory: ACS: Parameter Of Interest: Collection Year: 303(d) yr:
1 MC Shellfish Growing Area -Approved (Fecal, SH, SA) 2020
4t EC Fish Tissue Mercury (Nar, FC, NC) 2012 2008
29-56-1 Harbor Creek 3.8 SAcres SA;HQW
From source to East Bluff Bay
RCategory:
ACS:
Parameter Of Interest:
Collection Year: 303(d) yr:
1
MC
Shellfish Growing Area -Approved (Fecal, SH, SA)
2010
4t
EC
Fish Tissue Mercury (Nar, FC, NC)
2012 2008
2014 NC Water Quality Assessment -for 305(b) Page 777 of 1069

AFFP
Public Notice-NPDES Hyde
Affidavit of Publication
STATE OF NC) SS
COUNTY OF BEAUFORT )
Ann Taylor, being duly sworn, says:
That she is an employee in the Classified Department of
the Pub WDN, a daily newspaper of general circulation,
printed and published in Washington, Beaufort County,
NC; that the publication, a copy of which is attached
hereto, was published in the said newspaper on the
f Wwmg
ugust 07, 2016
That said newspaper was regularly issued and circulated
on those dates.
SIGNED:
LuA,44(utut
an employee in the ClassifieQ Department
Subscribed to and sworn to me this 7th day of August
2016.
Amy M Wh taker, Notary Public, Beaufort County, NC
My commission expires: August 25, 2018
00006744 00012761 919.807.6489
Wren Thedford
NCDENR-Division of Water Resources
1617 Mail Service Center
RALEIGH, NC 27699-1617
PUBLIC NOTICE
North Carolina Environmental Management Commission/ NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES Wastewater Permit
The North Carolina Environmental Management Commission proposes to
issue a NPDES wastewater discharge permit to the person(s) listed below.
Written comments regarding the proposed permit will be accepted
until 30 days after the publish date of this notice. The Director of the NC Division of
_ wattsResourc s_(DWR) may hold a public hearing should there be a significant
degree of public interest. Please mail comments and/or information requests to DWR
at the above address. Interested persons may visit the DWR at 512 N. Salisbury
Street, Raleigh, NC to review information on file. Additional information on NPDES
permits and this notice may be found on our website:
http://deq.nc.gov/about/ divisions/water-resources/ water-resources-
permits/wastewater-branch/ npdes-wastewater/public- notices
or by calling [phone].
Hyde County requested renewal of permit NCO088668 for Engelhard RO
WTP in Hyde County; this permitted discharge is RO reject waste water to
Far Creek, Tar -Pamlico River Basin.
�\aa�►��tiuu�ul,//
,0TAP��.
JOUBOCP v

PAT MCCRORY
❑nrcmw
DONALD R. VAN DER VAART
.S,MN7.
S. JAY ZIMMERMAN
91., Y
Water Resources
ENVIRONMENTAL QUALITY
June 29, 2016
MEMORANDUM
To: J. D. Potts
Division Marine Fisheries/Shellfish Sanitation
Morehead City
From: Ron Berry
NCDEQ / DWR /Complex Permitting Unit
Central Raleigh Office
Subject: Review of draft NPDES Permit NCO088668
Engelhard RO WTP
Hyde County
Please complete this form to indicate your agency's position or viewpoint on this draft permit and
return to me by August 26, 2016. If you have any questions on the draft permit, please contact me
at telephone number [phone] or via e-mail at [e-mail].
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained
properly, the stated effluent limits are met prior to discharge, and the discharge does not
contravene the designated water quality standards.
C
FEW
Concurs with issuance of this permit, provided the following conditions are met:
Opposes the issuance of this permit, based on reasons stated below, or attached:
Suite ofNonh CamGui I Emvw =! QWity I W.I. Remuca
1617 Mal anise Curler I Raleigh, North Cwlim 27699-1617
Loeetlon: 312 N. Salisbury St Rdeigh, North Caohm 27609, AandEle Building 9th Floor
Phone: [phone] F.: 919 907 9489

To: Water Quality Permitting Section SOC PRIORITY PROJECT: No
Wastewater Branch, NPDES Permitting
Attention: Ron Berry
Date: July 3, 2014
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Hyde
NPDES Permit No.: NC0088668 ,
PART I - GENERAL INFORMATION
1. Facility and address: Engelhard RO WTP RECEIVEDIDENRONR
Hyde County Water Systems
PO Box 66 JUL — 7 Z014
Swan Quarter, NC 27885
Water Q $eon
lty
2. Date of investigation: May 22, 2014 pemnitUng
3. Report prepared by: Scott Vinson, Environmental Engineer
4. Person contacted and telephone number:
Clint Berry, Utilities Director [phone]
5. Directions to site: The new facility is located off North Lake Road approximately 800
feet north of the intersection of Hwy 264, Engelhard, Hyde County, North Carolina.
Engelhard WTP
Latitude: 350 30' 55" N
Longitude: 760 01' 27" W
Attach a USGS Quad map: Engelhard West, NC
6. Discharge point(s), list for all discharge points:
Outfall 001
Latitude: 350 30' 45.1" N
Longitude: 75' 58' 54.3" W
Attach a USGS Quad map: Engelhard East, NC
7. Receiving stream or affected surface waters: Far Creek
a. Classification and Stream Index No.: SA; HQW, 29-70-(4)
b. River Basin: Tar -Pamlico
C. Describe receiving stream features and pertinent downstream uses:
The receiving stream is a tidal salt water used for commercial and noncommercial
shellfishing, primary recreational activities involving human body contact,
fishing, boating and supports aquatic life propagation and survival.

Page Two
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
a. Volume of wastewater: Year 2013 monthly average flow was 0.040 MGD
b. What is the current permitted capacity: n/a (RO membrane WTP)
C. Actual treatment capacity of current facility (current design capacity): n/a
d. Description of existing or substantially constructed WWT facilities:
• Treatment of raw groundwater through reverse osmosis to produce
drinking water and to discharge RO reject wastewater
e. Description of proposed WWT facilities: None
f. Possible toxic impacts to surface waters: Englehard WTP poses no apparent toxic
impacts to surface waters.
PART III - OTHER PERTINENT INFORMATION
Special monitoring or limitations (including toxicity) requests: None.
2. Compliance: The facility is in compliance with the permit.
PART IV - EVALUATION AND RECOMMENDATIONS
Engelhard WTP is operating within its permit conditions and limits. Hyde County Water
Systems has requested the renewal of Permit No NC0088668 and the Washington Regional
Office recommends renewing the permit.
73/
Signaiure of Report Preparer Date
,j
,zyf--
Water Quality Regional Supervisor Date

T T A M i
TIONAL
401
M[N
ry GN
151 MILSIi 0°37'
11 MILS
UTM GRID AND 1983 MAGNETIC NORTH
DECLINATION AT CENTER OF SHEET
SCALE 1:24000
1 1
2 0 1 MILE
1000 0 1000 2000 3000 4000 5000 6000 7000 FEET
1 KILOMETER
CONTOUR INTERVAL 5 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929
THIS MAP COMPLIES WITH NATIONAL MAP ACCURACY STANDARDS
FOR SALE BY U. S. GEOLOGICAL SURVEY, RESTON, VIRGINIA 22092
A FOLDER DESCRIBING TOPOGRAPHIC MAPS AND SYMBOLS IS AVAILABLE ON REQUEST
3Om.N.
'30'
ROAD CLASSIFICATION
Heavy-duty ty 4 LANE 6 LANE Liht g-du ty.............. _.....
%'j�
ti O
Medlum-dwh+ 4 LANE 6 LANE
Unimproved dirt
D U. S. Route O State Route
N.C.
ENGELHARD WEST, N. C.
QUADRANGLE LOCATION
35076-E 1-TF-024
1951
PHOTOREVISED 1983
DMA 5755 II SE —SERIES V842

3934
L
32'30"
-33 /
At— - --
,
BM j ```-s` - _ - "— -
_ _
_OIL-
_ _ h -_ - - _ — - _ --— 6 -I— "
L
— _ lL _ _ r
A.
71
• - \\ - a- - -+.yam k
3932
���-1LrJ1'!f.' r _ _ . ._ - s:.�t -' "y :re Fl , • {- y,. -_•Ur x °� ..-5 -� _ - _ - - l — - Y
JR
_ 3Li
1r �^
.,.. _ h
360000
FEET +•
J. 931
_ C _
15 0-
- r - • - - — - _ .- - _.
I@
-
•_r
-t'
E Light -
•' E g i rd "'FAR C'Z�_- - _ -Daybeacon
2:! ?Jett Depth_7 F t
Dayb con Fee
a
Light.
-.
-21-
-
L =Cie
_N
7B000' MIDDLETOWN 2.1 !,If. 411 12900000 FEET 1 412
Mapped by the U. S. Coast and Geodetic Survey
Edited and published by the Geological Survey
Control by NOS/NOAA (C), and USCE (E), and
North Carolina Geodetic Survey (N)
Culture and drainage in part compiled from
aerial photographs taken 1948
Topography by planetable surveys 1950. Field checked 1951
Hydrography from surveys dated 1875-1877 and supplementary
information
Polyconic projection. 10,000-foot grid ticks based on North Carolina
coordinate system. 1000-meter Universal Transverse Mercator
grid ticks, zone 18, shown in blue. 1927 North American Datum
To place on the predicted North American Datum 1983 move the
projection lines 12 meters south and 30 meters west as
shown by dashed corner ticks
Gibbs
Point
Gibbs (C)
MN
GN
9•
160 MILS 0'33'
10 NILS
UTM GRID AND 1983 MAGNETIC NORTH
DECLINATION AT CENTER OF SHEET
r /J
414 (MIDDLETOWN ANCHORAGE) 416
5854 IV NW
SCALE 1:24000
1 1
Y 0 1 MILE
1000 0 1000 2000 3000 4000 5000 6000 7000 FEET
1 .5 0 �— 1 KILOMETER
CONTOUR INTERVAL 5 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929
DEPTH CURVES AND SOUNDINGS IN FEET —DATUM IS MEAN LOW WATER
THE RELATIONSHIP BETWEEN THE TWO DATUMS IS VARIABLE
SHORELINE SHOWN REPRESENTS THE APPROXIMATE LINE OF MEAN HIGH WATER
THE PERIODIC TIDES IN THIS AREA ARE NEGLIGIBLE
55" 417
N.C.
QUADRANGLE LOCATION
418 ® l,4TE
4'
Heavy-duty........
Medium -duty
C

Hyde
County
Utilities
Department
Clint Berry
Director of Public Services
May 22, 2014
1095 MAIN STREET / P.O. BOX 66 - SWAN QUARTER, N.C. 27885
NC Department of Environment and Natural Resources
Division of Water Quality/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Permitting Unit:
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FAX: [phone]
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RECEIVEDIDENRIDWR
MAY 12 2014
Water Ressn
Permittingectio
Subject: NPDES Permit Renewal
Hyde County Water System
Engelhard WTP
NPDES Permit ANCO088668
Hyde County
The Hyde County Water System is submitting the renewal application for NPDES permit
#NC0088668, Engelhard WTP. The permit application consists of-
- Cover letter
- Short Form C-WTP
- Topographic Map
- Process Flow Schematic
A Solids Handling Plan is not included in this renewal package as there are no solids in
the waste stream or any solids production.
We request that the following permit modifications be considered:
• The current permit has a monitoring
requirement for Temperature and Dissolved Oxygen (DO). As the wastewater
discharge is groundwater, the temperature and D.O. levels are consistent. The
temperature range is 18°C - 20°C and the D.O. range is 0.8 mg/l — 2.9 mg/l.
There has been no affect on receiving water temperature or D.O. levels. In

keeping with the WTP Strategy, we are requesting that the monitoring
requirement for these parameters be eliminated.
• The permit has a monitoring requirement for
Arsenic. Arsenic is consistently below detection level and we request that this
parameter be removed from the permit.
• The permit has a monitoring requirement for
Copper. Copper levels are below detection levels a majority of the time. There
have been a few detects that we feel are most probably sampling or laboratory
errors. Passing toxicity tests has not been a problem with the effluent. We
request that Copper be removed from the permit.
• The permit has monitoring requirement for
Iron, Chlorides and Fluoride. As there are no saltwater standards for these
parameters, we request that they be removed from the permit.
• The permit has a monitoring requirement of
Zinc. The zinc concentration is typically less than 20 ug/l, which is about V4 of
the saltwater standard of 86 ug/l. We request that this parameter be removed from
the permit.
• The permit has a monitoring requirement for
Salinity. The average effluent salinity is approximately 5.0 ppt, which is 1/3 of
the receiving stream salinity. Effluent salinity will not impact the receiving
waters and we request that this parameter be removed from the permit.
• The permit has Upstream/Downstream
monitoring requirements for pH, Temperature, Salinity, Conductivity, D.O. and
Ammonia Nitrogen. We request that Upstream/Downstream monitoring for all
parameters be removed from the permit. Test results for this permit period
indicates that given the uniformity of the effluent discharge parameters and
amount of dilution in the receiving stream, that the receiving stream is not
impacted by the discharge. The average of the salinity testing shows upstream
and downstream numbers to be the same. Also, the salinity of the discharge is 1 /3
of the receiving stream. The upstream and downstream conductivity test results
are also the same. With an effluent conductivity that is less than V4 of the
receiving waters, no change would be expected. The same can also be
demonstrated for pH, Temperature and D.O. The average of downstream results
reveal a slight increase in Ammonia Nitrogen from 0.2 mg/1 to 0.3 mg/l, although
many results show that the downstream ammonia nitrogen is lower than the
upstream sample.
• We recognize that the purpose of NPDES
monitoring is to protect water quality and the potential for toxicity in the
receiving waters. The reject water from the RO system is remarkably uniform.
Unless there is contamination of the groundwater, the characteristics of the

discharge should not change. A review of the data for the following parameters:
salinity, conductivity, pH, TDS, and chloride show minimum variations. As no
environmental impacts or toxicity problems have been observed, we request that
these parameters be removed from the permit.
• The permit requires monitoring for Total
Phosphorus and Total Nitrogen. As mentioned earlier, unless groundwater
contamination occurs, the discharge levels of these parameters should not
increase. Total Phosphorus levels average about 1.0 mg/1 and Total Nitrogen is
about 10.0 mg/1. We request that monitoring for these parameters be removed.
We have asked for a significant reduction in monitoring compared to our current permit.
Unlike a conventional domestic wastewater treatment plant, the "feed" to the treatment
system stays uniform in flow and characteristics. Groundwater, that should be free of
contaminants, is treated in a reverse osmosis unit. The reject from this system has no
chemicals or other additives added in. The discharge is basically filtered drinking water.
Our request to reduce the majority of the monitoring requirements is based on the
uniformity of the discharge parameters over the course of the permit period. We
acknowledge that during this period, certain parameters had extreme "hits" which we did
not investigate and can only conclude they were sampling or laboratory errors.
We thank you for your consideration in these issues. If you have any questions or
comments, please call me at 252/926-4196.
Sincerely,
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Clint Berry, Utilities Director
Hyde County Water System

NPDES
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