NC0088501_Technical Correction_20160829

PAT MCCRORY
DONALD R. VAN DER VAART
Water Resources S. JAY ZIMMERMAN
ENVIRONMENTAL OUAL:TY
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August 29, 2016
Mr. Thomas J. Roberts
AQUA North Carolina
202 MacKenan Ct
Cary, NC 27511
Subject: Technical correction to NPDES Permit NCO088501
Stonington Subdivision—Well#1 WTP
Forsyth County
Dear Mr. Roberts:
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 NC0088501.
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 in 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]].
Sincerely,
eX14
.! q
S.Jay Zim a rman, P.G.
4r Director Division of
Water Resources
cc: Central Files Winston-Salem Regional Office/Mike Mickey 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
hUps://deq.nc.gov/about/di vis ions/water-resources/water-resources-permits/wastewater-brancb/npdes-wastewater-permits

NPDES Permit NCO088501
PART I
A. (I.) 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 from Well#1 via Outfall 001. Such discharges shall be limited and
monitored 1 by the Permittee as specified below:
PARAMETER LIMITS MONITORING REQUIREMENTS 1
[PARAMETER CODE"] Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow 50050 Weekly Estimate Effluent
Total Suspended Solids C0530 30.0 mg/L 45.0 mg/L 2/month Grab Effluent
Total Residual Chlorine 2 50060 28 µg/L 2 .2/month Grab Effluent
>6.0 and<9.0 standard
pH 00400 — units 2/month Grab Effluent
Turbidity 3 00070 2/month Grab Effluent
Total Manganese 01055 Monthly Grab Effluent
Total Zinc 4 01092 Quarterly Grab Effluent
Total Iron 01045 Quarterly Grab Effluent
Footnotes:
1. The Permittee shall report discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application [see A. (2)]
2. The Division shall consider compliant all TRC effluent values reported below 50µg/L. However, the
Permittee shall continue to record and submit all values reported by North Carolina-certified laboratory
methods (including field certified), even if these values fall below 50µg/L.
3. Discharge from this facility shall not cause receiving-stream turbidity to exceed 50 NTU. If instream
background conditions exceed 50 NTU,this discharge shall not cause instrea n turbidity to increase.
4. Total Zinc -monitor only if filters are backwashed with corrosion inhibitor or other containing zinc.
A. (2.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
specify that, if a state does not establish a system to receive such submittals, then Permittees must submit
DMRs electronically to the Environmental Protection Agency(EPA).
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