NC0022730_Draft Permit_20220628

ROY COOPER
Governor
ELIZABETH BISER
Secretary
RICHARD E. ROGERS, Jr.
Director
NORTH CAROLIh1A
Environmental Quality
June 28, 2022
Daniel Davis, Director of Utilities
Town of Beach Mountain
403 Beech Mountain Parkway
Beech Mountain, North Carolina 28604-8012
Subject: Review of Permit Draft NPDES NC0022730
Grassy Gap Creek WWTP, WPCS Grade WW-2
204 Grassy Gap Road, Beach Mountain
Watauga County
Mr. Davis:
In response to your request to renew the subject NPDES permit, received April 1, 2022, the
Division of Water Resources (DWR or 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
publishing a notice in newspapers having circulation in the general Jackson 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 NCDEQ / DWR / NPDES
Program no later than August 5, 2022, approximately 30 days after receiving this letter. Your
written comments are welcome but are not mandatory.
SUMMARY OF RENEWAL CHANGES
The Division understands from your application to renew that Carolina Water Service, Inc.
(CWS) has made no significant alterations to the subject wastewater treatment system since
last renew. We have therefore made only minimal changes to your permit including updating
permit text and site vicinity map.
The NPDES standard conditions (Parts II, III, and IV), are part of this permit but are not included
in this draft document (cover, map, and Part I). The latest version of Parts II, III, and IV are
available at https://bit.ly/2BZ4xxx and can be viewed online or downloaded as a PDF file.
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 —
919.707.3616

Daniel Davis, Director of Utilities
Renewal - Draft Permit Review
June 2022
Page 2
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, please email the undersigned at [[e-mail]]. Much of NC State
Government may currently function remotely considering emergency response to Covid 19,
therefore correspondence via email is preferred.
Respe ully,
r
Joe . Corpor n, P.G.
D : • / DWR NPDES
Enclosure: NPDES Permit NC0022730 (renewal DRAFT)
ec: NPDES Program Files / Laserfiche [draft permit and Fact Sheet]
WSRO/SWPS, Jenny Graznak; Lon Snider, Supervisor
OCU, Maureen Kinney

Permit NC0022730
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 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, the
Town of Beech Mountain
is hereby authorized to disch:, waste \,tf a facili ated at the
204 Gras
G . G•�► ��:ek TP
ech Mountain
ty
to receiving waters designated as Buckeye Creek 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
2022.
This permit and authorization to discharge shall expire at midnight on September 30, 2027.
Signed this day , 2022
Richard E. Rogers, Jr, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

Permit NC0022730
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.
The Town of Beech Mountain
is hereby authorized to:
1. continue operating an existing 0.080 MGD wastewater treatment system utilizing
• influent bar screen
• flow equalization
• dual -path aeration basins and clarifiers
• chlorine disinfection
• dechlorination equipment
these facilities located at the Grasp Gap C 1��TP, `�O Grassy Gap Creek Road, Beech
Mountain, Watauga County,
2. discharge from said treatment works via Outfall 002, at the location specified on the attached map,
into Buckeye Creek [Stream Index 8-20-3-(2.5)], a waterbody currently classified C-Trout within
hydrological unite 04-02-01 (HUC: 06020002) of the Watauga River Basin.
Page 2 of 6

Permit NC0022730
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Biological WPCS Grade II WWTP [15A NCAC 08G.0302]
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge via Outfall 002. Such discharges shall be limited, monitored, and
reported' by the Permittee as specified below:
PARAMETER
[eDMR Code]
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
I Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 2
Flow
50050
0.080 MGD
Continuous
Recording
I or E
Temperature (°C)
00010
Daily
Grab
Effluent
Total Residual Chlorine 3
50060
28 µg/L
2/Week
Grab
Effluent
BOD, 5-day (20°C) 4
C0310
30.0 mg/L
45.0 mg/L
Weekly
Composite
I & E
Total Suspended Solids 4
C0530
30.0 mg/L
0 mg/L
e ly
Composite
I & E
NH3 as N
(Apr 1 — Oct 31)
C0610
1_ i m t' 1
3 m
Weekly
Composite
E
(Nov(No1 —Mar 30) as N
C
Mo i or and R ..rt [m •'
r ]
Weekly
Composite
E
Fecal Coliform
(geometric mean)
31616
200/100 mL
400/100 mL
Weekly
Grab
E
pH (Standard Units)
00400
> 6.0 and < 9.0 s.u.
Weekly
Grab
E
Total Nitrogen
(NO2+NO3+TKN)
C0600
Monitor and Report [mg/L]
Semi
Annually
Composite
E
Total Phosphorus
C0665
Monitor and Report [mg/L]
Semi-
Annually
Composite
E
Total Mercury 5
COMER
Monitor and Report n /L
p [ g ]
t
1/Permit
Cycle
Grab
E
Footnotes:
1. Beginning on the permit effective date, the Permittee shall submit discharge monitoring reports
electronically using the Division's eDMR reporting system [see A. (3.)].
2. I = Influent; E = Effluent
3. The Division shall consider compliant all effluent TRC values reported below 50 µg/L. However, the
Permittee shall continue to record and submit all values reported by a North Carolina Certified Test
Methods (including field certified), even if these values fall below 50 µg/L.
4. The monthly average BOD-5 and Total Suspended Solids (TSS) concentrations shall not
exceed 15% of the respective influent value (i.e., 85% removal required).
5. See permit section (A. 2.).
Condition: The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 3 of 6

Permit NC0022730
A. (2.) EFFLUENT MERCURY ANALYSIS
[G.S. 143-215.66]
The Permittee shall provide one effluent mercury analysis, using EPA method 1631E, in conjunction
with the next permit renewal application. The analysis should be performed within 12 months prior to
the application date. Any additional effluent mercury measurements conducted from the effective date
of this permit and up to the application date shall also be submitted with the renewal application.
If the result of the mercury analysis is not provided with the application, the application may be returned
as incomplete, and the Permittee considered non -compliant.
A. (3.) 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.) Signatory Requireints
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monito
1. Reporting Requirements 1Stine
The permittee shall,risporscrgn nit n
and Section E. (5.) (a)1
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. The eDMR system may be
accessed at: https://deq.nc.gov/about/divisions/water-resources/edmr.
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
following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
See "How to Request a Waiver from Electronic Reporting" section below.
Page 4 of 6

Permit NC0022730
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, 2025, 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\tl\e NIQES pro ) that is the designated entity
for receiving electronic NPDES data [se ! CFR 1
EPA plans to establish a website that will a
each type of electronic submi • . i s for e
appropriate electronic repo • tool „ i' be a
Electronic Reporting Rule is fo. s i at: ' •s://
24954/national-polld%schar
ropriate electronic reporting tool for
s on how to access and use the
Information on EPA's NPDES
egi ster. gov/documents/2015/ 10/22/2015-
-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to
the Division. Requests for temporary electronic reporting waivers must be submitted in writing to
the Division for written approval at least sixty (60) days prior to the date the facility would be
required under this permit to begin submitting monitoring data and reports. The duration of a
temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data
and reports shall be submitted electronically to the Division unless the permittee re -applies for and is
granted a new temporary electronic reporting waiver by the Division. Approved electronic reporting
waivers are not transferrable. Only permittees with an approved reporting waiver request may
submit monitoring data and reports on paper to the Division for the period that the approved
reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Page 5 of 6

Permit NC0022730
4. Si2natory 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
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 i ectl esponsi or gathering the information,
the information submitted is, to the best cf know belief, t ccurate, and complete. I
am aware that there are significant penal :* o subm t false info ation, including the
possibility of fines and imprisonment for kn iolatz "
5. Records Retention Su lemen
The permittee shalj in rec ds f a sc e i o gyring Reports, including eDMR submissions. These
records or copies sha 1 be maintained for a perio 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

Town of Beach Mountain
Grassy Gap Creek WWTP
Latitude: 36° 13' 02" N Hydrological Unit: 04-02-01
Longitude: 81° 54' 25" W Stream Class: C; Trout
Receiving Stream: Buckeye Creek Stream Index: 8-20-3-(2.5)
Drainage Basin: Watauga River HUC: 06020002
State Grid / USGS Quad: C11NW / Elk Park, NC
Facility •°
Lo
not to sca e
Orth
NPDES Permit NC0022730
Watauga County