NC0030473_Draft Permit_20170920

Water Resources
Environmental Quality
September 20, 2017
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. JAY ZIMMERMAN
Director
Ms Penny Hodge
Mill Ridge Property Owners' Association
229 Clubhouse Drive
Banner Elk, NC 28604
Subject: Draft NPDES Permit NCO030473
Mill Ridge Development WWTP, WW -2
229 Clubhouse Drive, Banner Elk 28604
Watauga County
Dear Ms. Hodge:
In response to your request to renew the subject NPDES permit, the Division of Water Resources (DWR or
the Division) hereby transmits this draft for your review and comment. Please review this document to assure
your understanding of the permit limits and monitoring conditions, and to correct errors, if any.
The Division understands that you have made no significant changes to your facility since the last permit
renewal. We have made the following updates to your previous permit:
1. The facility map has been updated
2. Regulatory citations have been added.
3. Parameter codes have been updated in Section A. (l.).
4. Electronic reporting of discharge monitoring reports (eDMR) has been added in Section A (2.).
Concurrent with this notification, the Division will solicit public comment on this draft by publishing a notice
in newspapers having circulation in the general Watauga County area, as required by the NPDES Program.
Please provide your comments, if any, to me via email [[e-mail]] or write to my attention
care of DEQ / DWR / NPDES Program no later than October 20, 2017. Your written comments are welcome
but not mandatory
Following the mandatory 30 -day public comment period, the Division will review all pertinent comments on
your permit draft, and take appropriate action prior to issuing your NPDES permit final. If you have questions
concerning this draft, please e-mail me or call my direct line [phone].
Sincerely,
i
Derek Denard, Environmental Specialist
Compliance & Expedited Permitting Unit
Division of Water Resources, NCDEQ
Enclosure: NPDES Permit NCO030473 (renewal DRAFT)
he NPDES Program Files
ec DWR/WSRO, George Smith [george smith@ncdenr gov]
Wastewater Operator Certification Group / Maureen Kinney [Maureen Kinney@ncdenr gov]
State of North Carolina I Environmental Quality
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919-707-9000

NPDES Permit NCO030473
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
Mill Ridge Property Owners' Association
is hereby authorized to discharge wastewater from a facility located at the
Mill Ridge Development WWTP
229 Clubhouse Drive, Banner Elk 28604
Watauga County
to receiving waters designated as the Watauga River in the Watauga 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 , 2017.
This permit and authorization to discharge shall expire at midnight on September 30, 201 %.
Signed this day 52017.
S. Jay Zimmerman, P.G., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

NPDES Permit NCO030473
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.
Mill Ridge Property Owners' Association
is hereby authorized to:
1. continue to operate an existing 0.052 MGD dual -train wastewater treatment system that includes
the following components:
• influent bar screen
• duplex grinder pumps
• flow splitter weir box
• two aeration basins
• dual -hopper bottom clarifiers
• sludge return air lifts
• skimmer return air lifts
• aerated sludge holding basin
• tertiary treatment unit consisting of dual -cell filtration system
• clear well
• filter backwash pumps
• mud well
• ultraviolet disinfection system
• continuous recording flow measuring device
• automatically activated standby power generator
located at the Mill Ridge Development WWTP, 229 Clubhouse Drive, Banner Elk in Watauga
County; and
2. discharge from said treatment works via Outfall 001, at the location specified on the attached map
into the Watauga River [stream index 8-(1)], currently classified B; Tr, HQW waters with Subbasin
04-02-01 [HUC 06010103 03 01 ] in the Watauga River Basin.
Page 2 of 6

NPDES Permit NCO030473
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 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 from outfall 001. Such discharges shall be limited, monitored and
reported' by the Permittee as specified below:
EFFLUENT
LIMITS
MONITORING REQUIREMENTS'
Monthly
Daily
Measurement
Sample
Sample
CHARACTERISTIC
[PARAMETER CODES]
Average
Maximum
Frequency
Type
Location2
Flow (MGD)
50050
0 052 MGD
Continuous
Recorder
I or E
BOD, 5 -day (20°C) (mg/1)
C0310
6.0 mg/L
9 0 mg/L
Weekly
Composite
E
(April 1— October 31
BOD, 5 -day (20°C) (mg/1)
C0310
10 0 mg/L
15 0 mg/L
Weekly
Composite
E
(April 1 — October 31)
Total Suspended Solids (mg/1)
C0530
10.0 mg/L
15 0 mg/L
Weekly
Composite
E
NH3 as N(mg/1) (mg/1)
C0610
3 9 mg/L
19 5 mg/L
Weekly
Composite
E
(April 1 — October 31)
NH3 as N(mg/1) (mg/1)
C0610
4.0 mg/L
20 0 mg/L
Weekly
Composite
E
(November 1 — March 31)
Dissolved Oxygen (DO) (mg/1)
00300
Daily average > 5 0 mg/L
Weekly
Grab
E
Dissolved Oxygen (DO) (mg/1)
00300
Monitor & Report
Weekly
Grab
U & D
Fecal Coliform (#/100ml) 3
31616
200/100 ml
400/100 ml
Weekly
Grab
E
(geometric mean)
Temperature (°C)
00010
Monitor & Report
Weekly
Grab
E, U & D
Total Nitrogen (mg/1)
C0600
Monitor & Report
Semi -Annually
Composite
E
(NO2+NO3+TKN)
Total Phosphorus (mg/1)
C0665
Monitor & Report
Semi -Annually
Composite
E
PH (su)
00400
Not < 6 0 nor > 9 0
Weekly
Grab
E
Standard Units
Footnotes:
1. The Permittee shall begin submitting Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Condition A. (2.).
2. I = Influent; E = Effluent; U = upstream, at least 100 feet upstream from the outfall; D = downstream,
approximately 0 1 mile downstream from the outfall.
3. Fecal Coliform shall be calculated using the geometric mean, according to the procedure detailed in Part II.
Section A.
Conditions:
• There shall be no discharge of floating solids or visible foam in other than trace amounts
Page 3 of 6

NPDES Permit NCO030473
A. (2.) ELECTRONIC REPORTING OF MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015.
NOTE: This special condition supplements Dr supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR) internet application
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring
data and submit DMRs electronically using the internet. Until such time that the state's eDMR application
is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be
required to submit all discharge monitoring data to the state electronically using eDMR and will be required
to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of
the computer printed eDMR to the following address
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access, then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge
monitoring data may be submitted on paper DMR forms (MR 1, 1. 1, 2, 3) or alternative forms approved by
the Director. Duplicate signed copies shall be submitted to the mailing address above. See "How to
Request a Waiver from Electronic Reporting" section below
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
Sewer Overflow/Bypass Event Reports,
Pretreatment Program Annual R.ports; 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 Jelow).
Page 4 of 6

NPDES Permit NC0030473
2. Electronic Submissions
In accordance with 40 CFR 122 41(1)(9), the permittee must identify the initial recipient at the tune 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. ovg /compliance/final-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
submittmg monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and
shall thereupon expire. At such time, monitoring data and reports shall be submitted electronically to the
Division unless the permittee re -applies for and is granted a new temporary electronic reporting waiver by
the Division. Approved electronic reporting waivers are not transferrable. Only permittees with an
approved reporting waiver request may submit monitoring data and reports on paper to the Division for the
period that the approved reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http.//deq.nc. gov%about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part U,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part H, Section B.
(11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signmg 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 -
Page 5 of 6

NPDES Permit NCO030473
"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 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 submittingfalse information, including the possibility offines 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 6 of 6

WATAUGA RIVER E., ' • f J
[flows northwest] /r i `- ,,,`r i��'%.
.4,_",.,•�..�__..""..-�'- � � ' o ' � '�!
KL �" �
-.
jOutfafl 001 1"
' � • - - ! �..�,,,�
�►
mow,
�.^•
-� •- �.�.-.'�••"� ��,,�...,�-- Approximate
Facility Boundary
Clubhouse Dr •
ti �.r�, r _� Ri ver Road 1
ONa f� "�'`�
%
copy©+2013 Nation al�Geogmphic Societyli-cubed
Mill Ridge Property Owners' Association
Mill Ridge Development WWTP
_
NPDES Permit NCO030473
229 Clubhouse Drive, Banner Elk 28604
Receiving Stream: WATAUGA RIVER Stream Class: B;Tr,HQW
Stream Segment: 8-(1) Sub -Basin #: 04-02-01
River Basin: Watauga HUC: 060101030301
County: Watauga
SCALE
1:10,000
36.155° N, -81.7733° W
NC Grid: CI INE
USGS Quad: Valle Crucis, NC