NC0078955_NPDES Draft Permit_20060705

•
July 5, 2006
Mr. Ronald D. Autry
City of Dunn
P.O. Box 1065
Dunn, North Carolina 28335
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
RECEIVED
JUL 0 5 2006
DENR - FAYEITEVI .LE REGIONAL OFFICE
Subject: Draft NPDES Permit
Permit NC0078955
AB Uzzle WTP
Harnett County
Dear Mr. Autry:
Enclosed with thisletteris a copy of the draft permit for your facility. Please review the draft
very carefully to ensure thorough understanding of the conditions and requirements it contains.
The draft permit contains the following significant changes from your current permit:
> A total residual chlorine (TRC) limit has been added to this. permit. The limit will take
effect 18 months after the effective date of the final permit. See the attached TRC policy
memo for details.
Please submit any comments to me no later than August 6, 2006. Comments should be sent to
the address listed at the bottom -of this page. If no adverse comments are received from the public or
from you, this permit will likely be issued in September, with an effective date of October 1, 2006. If
you have any questions or comments concerning this draft permit, contact me at the telephone number
or e-mail address listed below.
Sincerely,
Agyeman Adu-Poku
Environmental Engineer
NPDES Western Unit
cc: NPDES Unit
any`.et evi14e-Regional OfficeLSurface-Wafter Proteclimp
No One Carolina
turally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone]
Internet: www.ncwaterquality.org Location: 512 N. Salisbury St. Raleigh, NC 27604 - . Fax [phone] ' 1-877-623-6748
Customer Service
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Perrnit.NC0078955
STATE , ;OF 'NORTH CAROLINA'
--DEPARTMENT OF ENVIRONMENT AND"NATURAL RESOURCES'-'
DIVISION OF WATER:QUALITY
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, the
of Dunn
•
is hereby authorized to discharge wastewater from a facility located at the
•
AB 'Uzzle.Water Treatment Facility
805 West "E" Street
Erwin , .
Harnet County
to receiving waters designated as Juniper Creek in the Cape Fear River basin
in accordance with'effluent limitations; monitoring requirements, and other conditions set forth in. Parts
, lI, III and IV. hereof.
This permit shall,become effective
This permit and; authorization to discharge shall expire at midnight on September 30, 2011.
' Signed this day
DRAFT
Alan W. Klimek, P.E. ,Director
Division of Water Quality
By Authority of the Environmental Management Commission.

Permit NC0078955-
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 City of Dunn is hereby authorized to:
1. Continue to operate an existingdrinking water treatment facility with the following components:
• Lined storage Lagoon
• 9,030 linear feet of sludge drying beds
The facility is located at AB Uzzle Water treatment Facility, on 805 West "E" Street, Erwin, Harnett
County.
_ _2._.._Discharge_filter-backwash_ wastewater from -said-tr-eatmentworks.-at the location -specified -on the --
attached map into Juniper Creek classified C waters in the Cape Fear River basin.

State Grid/Ouad:
Latitude:
Receiving Stream:
Drainage Basin:
AB Uzzle WTP
F 24 SW / Erwin; NC
35° 19' 30"N
Juniper Creek
Cape Fear River Basin
Outfall 001
(flows southwest)
Permitted Flow: 0.20 MGD
Longitude: 78° 41' 50" W
Sub -Basin: 03-06-13
Stream Class: C
Facility
Location
not to scale
North NPDES Permit No. NC0078955
Hamett County

Permit NC0078955
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit 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:
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Flow
Weekly
Instantaneous
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Settleable Solids
0.1 m1IL
0.2 m1/L
Weekly
- • Grab
. Effluent
Turbidity' -
Weekly
Grab
Upstream &
Downstream
Iron
Weekly
• Grab •
Effluent
Total Residual Chlorine2
17 ug/L
Weekly
Grab
Effluent
Aluminum
Weekly
Grab
Effluent
Footnotes:
1. The discharge shall not cause the turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds
these levels due to natural background conditions, the discharge level cannot cause any increase in the
turbidity in the receiving water.
2. ' TRC limit takes effect 1.8 months after the permit effective date. Until then, the Permittee shall monitor TRC
with no effluent limit.
All samples collected should be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

NPDES Unit Staff`.
David A. Goodtici}
NPDES Unit Sup
•
SUBJECT: : Total Residual Ch10
Every three years the State is required b
'. classifications, determine if changes are
as. the "triennial review." Pulilic•hearin
water quality standards during the su
. the states Environmental Management
. - The HearingOfficer's reconnmeridecl c
Methylene Blue Active Substances (1.;18
_ 'recommended the addition of a stand.
- i
• All of the Hearing Officer's proposed
on April 1, 2003. This memo docunie
Total Residual Chlorine (TRC) '
Previously, TRC had an Action Level Sta dard, except in designated Trout waters. The Triennial Review changes
'modified the TR.0 Action Level Standd to an Aquatic Life. Standard of17',µg/L The Aquatic Life Standard will
'remain for designated Trout waters.
Aquatic Life Standard—17µg/L:' (fres
Revised TRC Policy
astir. ''
tine 19,:2003
e Policy for NPDES permits
the Clean Water Act to review its `surface water quality standards and
ceded and to make any necessary changes._. This review process is referred to
were held to solicit comments for the 2000-2003 Triennial Review of surface
er of 2002.: The,Hearing Officer's recommendations were presented before
omnussion on October 10, 2002.
angel included tnodific'ations to die'eaisting standards for ,Arsenic, Cyanide,
) and Total Residual.Chlorine (TRC). The Hearing Officer also
for Methyl Tent -Butyl: Ether' (MTBE)..
anges were adopted with the exception of MTBE. The changes took effect
is the changes to the NPDES permitting polity' for TRC linnets.._
TRC limits will be assigned to permit' renewals and all new permits issued after April 1, 2003.
Facilities that do not use cl>io
system to augment UV or oth
Facilities discharging to sire
,➢ Limits will be capped ;at28 '
It is. likely that rnany facilities will nee
the new TRC standard. Therefore, a
be added to any TRC limit added duri
facility to budget and design/const.cuc
Unit has promulgated minimum deli
cc .: Coleen Sullins
Regional:Office Supervisors
Shannon Langley
will .not receive a TRC limit, however, the presence of a chlorine back-up
disinfection requires a TRC limit
s with a 7Q10 <0.05 cfs (zero -flow streams) will receive a limit of 17. µg/L
L to protect against acute impacts.
to add dechlorination_(or use another means of disinfection) to comply With
mpliarice'-schedule of 18 months from.the effective date of the permit may
the current permit renewal This time period is allowed in order for' the -
the dechlorination and/or alternative disinfection system(s). , The NPDES
.criteria, in order to expedite permitting of dechlorination equipment...