NC0069761_Permit (Modification)_20040713

0 ATFR Michael F.Easley
�Ca`, �pG Governor
4 j 7 William G.Ross,Jr.,Secretary
] t r North Carolina Department of Environment and Natural Resources
Alan W.Klimek,P.E.,Director
Division of Water Quality
July 13, 2004
Mr. Seth Lawless
Town of Beech Mountain
403 Beech Mountain Parkway
Beech Mountain, North Carolina 28604
Subject: Modification of NPDES Permit NC0069761
Pond Creek WWTP
Watauga County
Dear Mr.Lawless:
The Division issued the subject permit on December 31,2003. Personnel in the Winston-Salem regional Office
have requested that the Total Residual Chlorine limit and monitoring requirements in the permit be made optional,
given the presence of ultraviolet disinfection at your facility. The Division concurs with the request.
This permit modification makes the TRC limit and monitoring optional, required only if chlorine is used for
disinfection. No other changes to the permit have been made.
Please find enclosed the revised page,which should be inserted into your permit. The old page may then be
discarded. All other terms and conditions contained in the original permit remain unchanged and in full effect. This
permit modification is issued under the requirements of North Carolina General Statutes 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency.
If any parts, measurement frequencies or sampling requirements contained in this permit 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 a written petition conforming to Chapter 150B of the North
Carolina General Statutes, 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.
If you have any questions concerning this permit modification,please contact Charles Weaver of the NPDES
Unit at [phone], extension 511.
Since ely,
n W.Klimek,P.E.
cc: Central Files
VVinston-Salem Regional Office,Water Quality Section
NPDE S Unit
Aquatic Toxicology Unit
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer Vislr us oNTHE INTERNET @ http://h2o.enr.state.nc.usiNPDES

r
, a
Permit NCO069761
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on July I, 2004 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 MONIT©RING REQUIREMENTS
Monthly Weekly. Daily Measurement Sample Type Sample Locatiani
Average Average Maximum Frequency
Flow 0.40 MGD Continuous Recording Influent or Effluent
BOD,5-day(202C)2 30.0 mg/L 45.0 mg/L Weekly Composite Influent&Effluent
Total Suspended Solids2 30.0 mg/L 45.0 mg/L Weekly Composite Influent&Effluent
NH3 as N 2/Month Composite Effluent
Dissolved Oxygen3 Weekly Grab Effluent,
_(April 1 —October 31 Upstream&Downstream
Fecal Coliform 200/100 ml 400/100 ml Weekly Grab Effluent
(geometric mean)
Total Residual Chlorine4 28 µg/L 2/Week Grab Effluent
Temperature(2C) Daily Grab Effluent
Temperature(2C) Weekly Grab Upstream&Downstream
Total Nitrogen Semi-Annually Composite Effluent
NO2+NO3+TKN)
Total Phosphorus Semi-Annually Composite Effluent
Chronic Toxicity5 Quarterly Composite Effluent
pH >6.0 and<9.0 standard units Weekly Grab Effluent
Footnotes:
1. Upstream = 100 feet above discharge. Downstream = 300 feet below discharge.
2. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed
15% of the respective influent value (85% removal).
3. The daily dissolved oxygen concentration shall not be less than 3.0 mg/L.
4. Limit and monitoring requirements apply only if chlorine is used for disinfection.
5. Chronic Toxicity (Ceriodaphnia) P/F at 51%; January, April, July & October [see A. (2)].
There shall be no discharge of floating solids or visible foam in other than trace amounts

[Twd: Pond Creek NC0069761]
Subject: [Fwd: Pond Creek NC0069761]
From: Karen Rust <[e-mail]>
Date: Wed, 30 Jun 2004 08:50:57 -0400
To: charles Weaver <[e-mail]>
Hi Charles,
Per Sue's email below, is there a way to indicate in the permit limits that the facility is
using UV, and we would only look for chlorine monitoring if they changed to chlorine
disinfection for whatever reason?
Thanks,
Karen
-------- Original Message --------
Subject:Pond Creek NCO069761
Date:Tue, 29 Jun 2004 11:35:09 -0400
From:Sue White <Sue.White(a ncmail.net>
Organization:NC DENR - Division of Water Quality, Water Quality Section
To:karen rust<karen.rust(4 ncmail.net>
Hi Karen!
Pond Creek NCO069761 shows up in BIMS as having monitoring violations
for the past several months (years) for C12 , but they use UV. Not a
deal cause it ' s not flagging them for NOV' s however it could cause
undeserved problems for them in the future. What should we do to
correct this? Can the C12 monitoring just be deleted in BIMS?
Thanks ! Hope all is going well for you and you have a great 4th!
Sue White, EIT
NC DENR Winston-Salem Regional Office
Division of Water Quality, Water Quality Section
585 Waughtown Street
Winston-Salem, NC 27107
Voice: (336) 771-4608 ext 273
FAX: (336) 771-4630
"Adventure is worthwhile in itself. "
--Amelia Earhart
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