NC0061425_Technical Correction_20150918

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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
Mr. Jadd Brewer
Water Quality Utilities, Inc.
P.O. Box 1167
Banner Elk, NC 28604-1167
Dear Mr. Brewer:
Donald R. van der Vaart
Secretary
September 18, 2015
Subject: Technical Correction of NPDES Permit NCO061425
Willow Valley WWTP
Watauga County
The Division has reviewed your permit file in response to a discrepancy noted by staff in the NC
DENR Winston-Salem Regional Office (WSRO). WSRO staff rioted that you were using a different version
of the effluent page than the one in their files. We have determined that the Ownership change
modification issued to your firm on May 2, 2014 was created using an outdated version of the permit text.
The 2014 modification lacks the Daily Maximum limit for ammonia nitrogen (NH3 as N), lacks permit
section I. A. (2), and also specifies an incorrect method of flow monitoring. This modification is issued to
correct these errant omissions, and is 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). Insert the attached pages into your permit
and discard the old pages.
This modified permit includes the following changes from your current permit:
➢ The effluent limitations and monitoring requirements in Section A. (1) have been corrected to
the same requirements as the 2013 permit renewal. Section A. (2) has been restored.
If any parts, measurement frequencies or sampling requirements contained in this modification 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.
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 any other Federal, State, or Local governmental
regulation. If you have any questions concerning this matter a contact Charles H. Weaver at (919)
807-6391 or via e-mail [[e-mail]].
Sin a ely,
Jay Zimmerman,
Division of Water R
cc: Central Files Winston-Salem Regional Office / Mike Mickey NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 512 North Salisbury Street, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer - 501/o Recycled/101/o Post Consumer Paper

Permit NCO061425
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
During the period beginning on October 1, 2015 and lasting until expiration, the Permittee is authorized
to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
PARAMETER
LIMITS
MONITORING REQUIREMENTS
PCS Code
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Locationl
Flow 50050
0.03 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day (20°C) C0310
5.0 mg/L
7.5 mg/L
Weekly
Composite
Effluent
Total Suspended Solids C0530
10.0 mg/L
15.0 mg/L
Weekly
Composite
Effluent
NHs as N C0610
2.0 mg/L
10.0 mg/L
Weekly
Composite
Effluent
Dissolved Oxygen 00300
Daily average > 6.0 mg/L
Weekly
Grab
Effluent
Dissolved Oxygen 00300
Weekly
Grab
Upstream &
Downstream
Fecal Coliform (geometric mean) 31616
200/100 ml
400/100 ml
Weekly
Grab
Effluent
Temperature (°C) 00010
Weekly
Grab
Effluent, Upstream
& Downstream
pH 00400
> 6.0 and < 9.0 standard units
Weekly
Grab
Effluent
Footnotes:
1. Upstream: 0.1 mile (at bridge) upstream from the outfall. Downstream: 0.08 miles downstream at
bridge.
There shall be no discharge of floating solids or visible foam in other than trace amounts
See Condition A. (2.) for instructions should the facility's permitted UV system fail and an alternate
means of disinfection is required. Total Residual Chlorine monitoring requirements and limits are
applicable if chlorine compounds are used for disinfection.
Page 4 of 5

Permit NCO061425
A. (2) TEMPORARY MEANS OF DISINFECTION
In the event that the wastewater treatment plant's ultraviolet (UV) disinfection system should fail,
underperform, or otherwise be removed from effective service, the permittee or his agent should
immediately inform the Surface Water Protection Section staff of the Winston-Salem Regional Office of
this development and discuss temporary, alternate means for disinfection of the effluent.
If chlorine compounds are used as temporary means of disinfection, the total residual chlorine (TRC)
concentration of the effluent must be monitored on a daily basis while this method of disinfection is in use
and values must be reported on the discharge monitoring report. TRC, in the effluent may not exceed 28
µg/L; therefore, dechlorination methods may also be necessary to ensure protection of water quality in
the receiving stream.
In the event that TRC monitoring should occur, the Division shall consider all effluent TRC values
reported < 50 µg/L to be in compliance with the pen -nit. However, the Permittee shall continue to record
and submit all values reported by a North Carolina certified laboratory (including field certified), even if
these values fall below 50 µg/L.
Use of a disinfection system other than the permitted UV system during circumstances not deemed as
emergency and/or temporary (replacement of lamps, lamp cleaning or maintenance, etc.) will be
considered a violation of the terms of this permit.
Page 5 of 5

Weaver, Charles
From: Weaver, Charles
Sent: Friday, September 18, 2015 10:00 AM
To: Basinger, Corey
Subject: RE: Willow Valley WWTP Limits Page NCO061425
The 2013 page is correct, and it matches BIMS. That's what I will send them as a correction.
From: Basinger, Corey
Sent: Friday, September 18, 2015 9:58 AM
To: Weaver, Charles; Smith, George
Subject: RE: Willow Valley WWTP Limits Page NCO061425
The issue that has come up is that the 2 effluent limits pages state different methods for flow.
The one we have (that's in BIMS) says flow is continuous.
The one they have (that's not in BIMS) says flow is Weekly and continuous.
CB
W. Corey Basinger
Regional Supervisor
Water Quality Regional Operations
Winston-Salem Regional Office
Division of Water Resources
Email: [e-mail]
Phone: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties.
From: Weaver, Charles
Sent: Friday, September 18, 2015 9:55 AM
To: Smith, George
Cc: Basinger, Corey
Subject: RE: Willow Valley WWTP Limits Page NCO061425
George — I've attached two documents.
The 2013 renewal has the correct effluent page. That's probably the one at the WSRO.
The 2014 ownership change mod has an older version of the effluent page — and no, I don't know why that one was
used. The page Willow Valley sent you is from the 2014 mod. Its only difference from the 2013 effluent page [apart
from formatting] is the deletion of the daily max NH3 limit.
I'll issue a correction to put the daily max limit back in.
CHW

From: Smith, George
Sent: Thursday, September 17, 2015 2:31 PM
To: Weaver, Charles
Subject: RE: Willow Valley WWTP Limits Page NC0061425
No hurry Charles, since we just received a court order to produce all NOV, NOD, enforcement cases, etc. in the last 10
years. Copied, fax, or scanned. Must be done by noon Friday. Tomorrow that is.
An impossible task. Come see me in jail.
George Smith
email: [e-mail]
Division of Water Resources
450 West Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
Direct phone: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Weaver, Charles
Sent: Thursday, September 17, 2015 2:27 PM
To: Smith, George
Subject: Re: Willow Valley WWTP Limits Page NC0061425
George, I'm working from home / a bit sick today. I'll check the files tomorrow and get back to you.
CHW
Messages sent to or from this address are subject to the North Carolina Public Records Law.
From: Smith, George
Sent: Thursday, September 17, 2015 11:43 AM
To: Weaver, Charles
Cc: Basinger, Corey
Subject: FW: Willow Valley WWTP Limits Page NC0061425
Charles,
The attached limits page does not match ours for NC0061425. They are saying that this page is in their current permit.
Also, it does not match our previous limits page for the permit that was issued on January 1, 2008 and expired on Sept
30, 2012. Does this page match an older permit?
George
George Smith
email: [e-mail]
Division of Water Resources
450 West Hanes Mill Road, Suite 300

Winston-Salem, NC 27105
Direct phone: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Water Quality Labs [ma iIto: waterguaIitylabs rLahoo.com]
Sent: Thursday, September 17, 2015 11:21 AM
To: Smith, George
Subject: Willow Valley WWTP Limits Page
Mr. Smith,
Attached is Willow Valley's limits page. If you need anything, please let me know!
Thanks,
Jenna Isenhour
Administrative Assistant
Water Quality Lab & Operations, Inc.
PO BOX 1167/1522 Tynecastle Hwy.
Banner Elk, North Carolina 28604
Phone-[phone]
Fax- [phone]