NC0007684_Permit (Modification)_20130503

MPDES DOCUWEMT SCAMMIMO COVER SHEET
NPDES Permit: NC0007684
Harnett County WTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Plan of Action
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date: May 3, 2013
an aocumerit is printea oa reuse paper-IMM"X-e any
coaMtes t colm the remrerae 01cle

NCDEN R
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat McCrory Charles Wakild, P.E. John Skvarla
Governor Director Secretary
May 3, 2013
Mr. Allan R. O'Briant, Water Treatment Plant Supervisor
Harnett County Regional Water Treatment Plant
P. O. Box 1119
Lillington, NC 27546
Subject: Modification ofNPDES Permit NCO007684
Harnett County Regional WTP
Harnett County
Dear Mr. O'Briant:
The Division of Water Quality has reviewed and approved your application for minor modification of
the subject permit. Accordingly we are forwarding the attached modified permit page. Please remove
the existing"Effluent Limitations and Monitoring Requirements'.' page and replace it with the one
attached to this letter. The modification extends the compliance schedule for continuous flow
monitoring for one year, making the continuous flow monitoring requirement effective on June 1, 2014.
This modification is issued 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).
Please note that 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 the Division of Water Quality or permits
required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or
Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Bob Sledge at telephone number (919)
807-6398 or via e-mail at [e-mail].
ay,
'72.
Charles Wakild, P.E.
cc: Central Files
Fayetteville Regional Office/Surface Water Protection Section
IVPDES Permit File-
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 Onc
Location:512 N.Salisbury St.Raleigh,North Carolina 27604 NozlhCarolina
Phone:[phone] FAX:9IM07-6492
Internet:www.ncwaterqual4.org / atmally
An Equal opportunity 1 Affirmative Action Employer Y .J

Permit NCO007684
A. (I.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
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:
EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS
Monthly Daily Measurement Sample Sample
Parameter Code Average Maximum Frequency T e Location
Flow 50050 Weeklyl Estimate Effluent
Flow 50050 Continuousi Recording Effluent
Total Suspended Solids C0530 30.0 mg1L 45,0 mglL Weekly Grab Effluent
PH 00400 ?6.0 s.u.and 9.0 s.u. Weekly Grab Effluent
Total Residual Chlorinez 50060 28 pgIL Weekly Grab Effluent
Turbidity 00076 Weekly Grab Effluent
Aluminum 01105 Quarterly3 Grab Effluent
Total Iron 01045 Quarterly3 Grab Effluent
Total Copper 01042 Quarterly3 Grab Effluent
Manganese 01055 Quarterly3 Grab Effluent
Fluoride 00951 Quarterly3 Grab Effluent
Ammonia Nitrogen C0610 Quarterly3 Grab Effluent
Total Phosphorous(TP) C0665 Quarterly3 Grab Effluent
Total Nitrogen (TN) C0600 Quarterly3 Grab Effluent
Whole Effluent Toxicity Monitoring4 TGP38 Quarterly Grab Effluent
Footnotes:
I. Requirement for continuous flow monitoring will become effective June 1, 2014. Until that date,
flow monitoring shall be conducted on a weekly basis.
2. The Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by
a North Carolina certi:f led laboratory (including field certified), even if these values fall below 50
µg/L.
3. Monitoring should be performed in conjunction with toxicity testing.
4. Ceriodaphnia dubia 7 day pass/fail test @ 13% concentration. See Condition A. (2.) for toxicity
testing requirements. Toxicity testing should be performed during the months of January, April, July
and October, and sampling should coincide with sampling for parameters covered by footnote 3.
All samples must be collected from a typical discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Oro
' MARZIANO & MCGOUGAN, P.A.
consul t i n g engineers
February 11, 2013
Mr. Bob Sledge
NCDENR- Division of Water Quality
Compliance& Expedited Permits Unit
1617 Mail Service Center
Raleigh,NC 27699
RE: Harnett County Water Treatment Plant
NPDES Discharge Continuous Flow Monitoring
MM Project No. 30006/300
Dear Mr. Sledge:
Nlarziano & McGougan, P.A. has been preparing detailed plans and specifications for the
upgraded water treatment plant. A part of the construction modifications included the addition
of a backwash holding lagoon with decant equipment and the installation of a flow monitoring
station for all of the decant water associated with the NPDES Discharge Permit. The
construction of these two items is scheduled to take place at the same time during the upgrade of
the water treatment plant.
Plans and specifications are being completed for submittal to NCDENR for review on the water
treatment plant that will include the flow monitoring station. it is anticipated that construction
will begin on the project during the summer of 2013. One of the first items scheduled for
completion on the project will be the backwash tank and the installation of the flow monitoring
station. Once the excavation is completed for the backwash and holding tank,the installation of
the meter can he completed and should be functional by the fall of 2013.
We appreciate your assistance and cooperation with the project. As a part of this update,we arc
requesting an extension to the time frame for the Flow monitoring requirement for Harnett
County WTI'on their NPDES flow monitoring requirement.
if you have any questions or if we can provide additional information, please contact this office.
Sincerely,
61u-
_Joseph W. McGougan, P.E.
Vice President nn
Marziano& cc: Mr. Allan O'13riant, HCDPU
McGougan,P.A.
1300 Second Avenue BAN
Suite 211
Conway.SC 29526
Phone: [phone] `C• r�
Fax: [phone] P
\C130006-HAIi\°L7-r'4\,-I'P UPG1tAl)E Tip 36\IGll1300-PermiLLinglL-Sledge O2.11.13.docx