NC0072125_technical Correction_20160826

Water Resources
ENVIRONMENIAL QUALITY
August 26, 2016
Mr. Jonathan Boone
Public Works Director
P.O. Box 1180
Rocky Mount, NC 27802-1180
PAT MCCRORY
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DONALD R. VAN DER VAART
S. JAY ZIMMERMAN
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Subject: Technical correction to NPDES Permit NCO072125
Tar River WTP
Nash County
Dear Mr. Boone:
The NC 2007-2014 Water Quality Standard (WQS) Triennial Review was approved by the US EPA
on April 6, 2016 with some revisions. The approved WQS no longer includes a standard for Manganese. We
have therefore removed the Manganese limit from permit NC0072125.
This permit 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). Insert the attached page into your
permit and discard the old page.
This modified permit includes the following changes from your current permit:
The Manganese limit has been deleted.
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, please contact Charles H. Weaver at (919)
807-6391 or via e-mail [[e-mail]].
0in erely,
S. Jay Zimrm an,
Director, Division of Water Resources
cc: Central Files
Raleigh Regional Office / Danny Smith
NPDES Unit
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, NC 27699-1617
919 807 6300 919-807-6389 FAX
https://deq. ne. gov/aboutldivisionslwater-resources/water-resources-permits/wastewater-bmnchlnpdes-wastewater-permits

NPDES Permit NCO072125
PART I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge filter backwash via Outfall 001. Such discharges shall be limited
and monitored' by the Permittee as specified below:
PARAMETER
[PARAMETER. CODE)
,00RnyGuaiv�cs
Montld y
Average
Dail
_�y
:11laivmuni
MeaswremeR s"Si,
Pregnancy
Sm e
R _ p�
Type
Sample
Location`
Flow (MGD)
50050
Continuous
Recording
Effluent
Total Suspended Solids (TSS) (mg/L)
C0530
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
Turbidity (NTU)
00070
Weekly
Grab
Effluent
Total Residual Chlorine (TRC) 2 (µg/L)
50060.
28 µg/L
Weekly
Grab
Effluent
pH
00400
> 6.0 and < 9.0 standard
—
units
Weekly
Grab
Effluent
Total Manganese (mg/L)
01055
Monthly
Grab
Effluent
Total Fluoride3 (mg/L)
00951
Quarterly
Grab
Effluent
Total Iron3 (mg/L)
01045
Quarterly
Grab
Effluent
Ammonia Nitrogen (NH3 as N) 3 (mg/L)
C0610
Quarterly
Grab
Effluent
Total Phosphorous (TP) 3 (mg/L)
C0665
Quarterly
Grab
Effluent
Total Nitrogen (TN) 3 (mg/L)
C0600
Quarterly
Grab
Effluent
Chronic WET Testing 4
TGP3B
Quarterly
Grab
Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application
system [see A. (3)].
2. The Division shall consider TRC effluent values reported below 50 µg/L to be compliant with the
permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina -certified laboratory method (including field certified), even if these values fall below 50µg/L.
3. Samples shall be collected concurrently with WET -test samples.
4. Whole Effluent Toxicity (WET) testing of Ceriodaphnia dubia shall be performed as 7-day pass/fail test at
6% effluent concentration during January, April, July, and October [see A. (2)].
Samples shall be taken at the outfall but prior to mixing with the receiving waters.
There shall be no discharge of floating solids or foam in other than trace amounts.
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