NC0084387_Permit Issuance_20150316

A&4
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
Mr. John C. Huber, Chief of Operations
Charlotte Water
7980 Babe Stillwell Farm Rd
Huntersville, NC 28078
Dear Mr. Huber:
Donald R. van der Vaart
Secretary
March 16, 2015
Subject: Issuance of NPDES Permit NCO084387
Lee S. Dukes, Jr. Water Treatment Plant (WTP)
Mecklenburg County
The Division of Water Resources (the Division) hereby issues the attached NPDES permit for the subject
facility. This permit 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.
The Division understands that you have made no significant changes to your facility the last permit
renewal. We have made the following updates to your previous permit:
removed monitoring for Total Iron, Total Copper and Total Manganese
added quarterly Total Fluoride monitoring because of the use of Fluoride additive to finished
water which is used as filter backwash water
• added updates to facility map and parameter codes.
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). The Division anticipates that these
regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to your NPDES
permit. [See Special Condition A. (3.)] For information on eDMR, registering for eDMR and obtaining
an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/Wq/admin/bog/ipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following web
site:
http://www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St Raleigh, North Carolina 27604
Phone: [phone] Fax: [phone]ICustomer Service:1-877-623-6748
Intemet^: www.ncwaterorq
An Equal OpportunityMimative Action Employer

Mr. Huber
March 2, 2015
Page 2 of 2
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing, upon written request submitted within thirty
(30) days after receiving this letter. Your request must take the form of a written petition conforming to
Chapter 150B of North Carolina General Statutes, and you must file it with the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is
made, this permit shall remain final and binding.
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 Resources or any
other Federal, State, or Local governmental permits that may be required.
If you have questions, or if we can be of further service, please contact Derek Denard at
[[e-mail]] or call [phone].
espec lly,
Jay Zimmerman, Ac ' ' ctor
Division of Water Resources, NCDENR
Enclosure: NPDES Permit NC0084387 (Issuance Final)
he: Central Files
NPDES Program Files _
MRO Files/ Atta: Michael Parker
ec: Aquatic Toxicology Unit, Susan Meadows [[e-mail]]
Jeffery Mitchell [[e-mail]]

NPDES Permit N00084387
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELMNATION SYSTEM
WDES)
In compliance with the provisions 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
Charlotte Water
is hereby authorized to discharge treated wastewater from a facility known as
Lee S. Duke, Jr. Water Treatment Plant (WTP)
7980 Babe Stillwell Farm Road, Huntersville 28078
Mecklenburg County
to receiving waters designated as McDowell Creek, within the Catawba River Basin, in accordance with
effluent limitations, monitoring requirements, and other applicable conditions set forth in Parts I. II, III,
and IV hereof.
The permit shall become effective May 1, 2015 .
This permit and the authorization to discharge shall expire at midnight on February 28, 2020.
Signed this day March 16, 2015.
Zimmerman, Director
ivision of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

r
NPDES Permit NCO0843 87
SUPPLEMENT IO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this 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 described herein.
Charlotte Water
is hereby authorized to:
1. continue to operate a conventional technology water treatment plant [coagulation, flocculation,
sedimentation, and filtration] with discharge of wastewaters from media filter backwash and
sedimentation basins with a design potable flowrate of 25.31 MGD and a maximum, monthly
average wastewater discharge of 0.670 MGD, with water and wastewater treatment consisting of;
• three (3) stages of flocculation
• two (2) sedimentation basins
• chlorination equipment
• four (4) filters
• three (3) 9 MG clearwells
• an equalization basin
• a clarifier
• dechlorination equipment.
• a sludge thickener
• a residuals storage lagoon
• chemical usage consists of
o carbon
o aluminum sulfate
o chlorine
o potassium permanganate
o fluoride
o lime
o phosphate
o sodium bisulfite
located at the Lee S. Duke, Jr. Water Treatment Plant_(WTP), 7980 Babe Stillwell Farm Road,
Huntersville, Mecklenburg County; and
2. discharge from said treatment works via Outfa11001 at a location specified on the attached map,
into McDowell Creek [Stream Segment 11-115-(5)], currently a Class WS-IV; CA waterbody
within Subbasin 03-08-33 of the Catawba River Basin.
Page 2 of 6

NPDES Permit NCO084387
PART
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 seq.]
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:
EFFLUENT
CHARACTERISTIC
[PARAMETER CODES]
LIMITS
I
MONITORING RE UIItEMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow (MGD)
50050
Continuous
Recording
Effluent
Total Suspended Solids (mg/L)
C0530
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
pH (su)
00400
Not < 6.0 or > 9.0
standard units
Weekly
Grab
Effluent
Total Residual Chlorine 2 (µg/L)
50060
28 µg/L 2
Weekly
Grab
Effluent
Turbidity (NTU)
00070
Weekly
Grab
Effluent
Total Aluminum 3 (µg/L)
01105
Quarterly
Grab
Effluent
Total Iron 3 (µg/L)
01045
Quarterly
Grab
Effluent
Total Fluoride 3 (µg/L)
00951
Quarterly
Grab
Effluent
Total Phosphorous (TP) (mg/L)
C0665
Quarterly
Grab
Effluent
TKN (mom)
NO3-N + NO2-N 4 (mg/L)
TN 4 (mg/L)C0600
00625
00630
Quarterly
Quarterly
Quarterly
Grab
Grab
Grab
Effluent
Effluent
Effluent
Chronic WET Testing 5
TGP3B
Quarterly
Grab
Effluent
Footnotes:
1. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring
reports electronically using NC DWR's eDUR application system. See Special Condition 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 501tg/L.
3. Samples shall be collected concurrently with WET -test samples.
4. For a given wastewater sample, TN = TKN + NO3-N + NOZ-N, where TN is Total Nitrogen, TKN is Total
Kjeldahl Nitrogen, and NO3-N and NOZ-N are Nitrate and Nitrite Nitrogen, respectively
5. Whole Effluent Toxicity (WET) testing - testing of Ceriodaphnia dubia shall be performed as 7-day pass/fail
test at 37% effluent concentration, during January, April, July and October [See A. (2)J.
Comments:
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.
Page 3 of 6

r
NPDES Permit NCO0843 87
A. (2.) CHRONIC TOXICITY PASS/FAIL MONITORING (QUARTERLY)
[15A NCAC 02B .0500 et seq.]
The permittee shall conduct uarterl chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent
versions.
The effluent concentration defined as treatment two in the procedure document is 37%. The testing shall
be performed as a Ceriodaphnia dubia 7-day pass/fail test. The tests will be performed during the
months of January, April, July and October. These months signify the first month of each three
month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be
obtained during representative effluent discharge and shall be performed at the NPDES permitted final
effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code
TGP3B. Additionally, DWR Form AT-1 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
with the notation of "No Flow" in the comment area of the form. The report shall be' submitted to the
Water Sciences Section at -the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then
monthly monitoring will begin immediately. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
Page 4of6

NPDES Permit NCO0843 87
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.
A. (3.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G. S . 143-215.1(b)]
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). The Division anticipates
that these regulations will be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting [&Mersedes Section D. (2.) and Section E. (5.) (a)]
Begin i no later than 270 days from the effective date of this permit, the permittee shall begin
reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and wilLbe required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being. physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above.
Page 5 of 6

NPDES Permit NC00843 87
Requests for temporary waivers from the NPDES electronic reporting requirements must be
submitted in writing to the Division for written approval at least sixty (60) days prior to the date the
facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid
for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.or web/wq/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part U,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://portal.nedenr.orL/web/wq/admin/bog/l*pu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
U certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system .designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations. "
3. Records Retention [Supplements Section D. (6.)l
r
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.41].
Page 6 of 6

Charlotte Water
Facility
Lee S. Dukes Water Treatment Plant (WTP)
Location
7980 Babe Stillwell Farm Road, Hunterville 28078
Scale 1:24.000
Receivine Stream: McDowell Creek Stream Class: WS-I V; CA
Stream Scemen'tti 11-115-(5) Sub -Basin: 03-08-33
Drainaee Basin: Catawba nUC: 03050101
NPDES Permit NC0084387
Latitude: 35°25'42" Loneitude: 81'53'17"
State Crid/USCS Ouad: r,5NW/ Lake Norman S
North
th
Mecklenburg County

T//,�/ I S_
DRAFT / FINAL
CHECK LIST ,
FILE CONTENTS:
Permit No. /V G (7 0 $Y a $ %
Left
BIMS Tracking Slip
NPDES Permit Writer: DEREK DENARD
Right Side:
❑ S eamline Package Sheet (to region, only if streamlined)
Draft Permit Cover Letter. (add new policy text; summarize major changes to permit)
3,-'raft Permit (order: cover; Sup to Cover Sheet; effluent page (s), special conditions; map)
M,--F�ility Map (E-Map: include facility Outfalls; U and D sample locations)
act Sheet (documents permit writer's issues and/or re -issue logic)
rmit Writer's Notes (if not in Facts Sheet -- chronology, strategy, DMR Review, RPA, etc.)
,Xaff Report from Region (as appropriate -- not needed if streamlined)
mit (Text, Effluent Sheets and Special Conditions)
�,,er
t Application. (New Permit or Renewal; any additional permittee correspondence) \
Acknowledgement Letter (NPDES Unit written response to Renewal Application)
❑ Permittee Responses (to acknowledgement letter, if any)
❑ Waste Load Allocation (reference date; notes if recalculated for current action)
//
Note: Italics indicate special conditions not always required or applicable. \ ,
� BIMS update "initiated DRAFT review" Date: I
•Z : I
Peer Review Submitted to �9'L L g eiv Date [ /(� Admin cutoff / PN date �cS
&- PeePeer Review completed by Date
LY�dated Public Notice System te] 27 /r Updated BIMS Events: Date
If
pf Submitted for Public Notice on l Newspaper Notice Received Actual Notice date(s)
AA(- (11.11.1 v Ur &1i / I
4' Regional Staff Review [Draft mailed / aile to MSV4t --d ,l�I[accd � Date [ 2%
i
❑ Regional Office Draft Approved by Date
Permittee Review [Draft ail /en iled] to .444 N�/Yt✓ Date V73—Comments received Date
411 TOX (ATB) Review (Draft Permit e tle to CLfX&1, 4!! 9, p mr f Date
❑ TOX (ATB) Review/Approval by Received Date
Us vws a,�: i5�dditional Review [other] 54-7 j ?
FINAL to�JoJtn / Tom for signature [date] )/ 0rl / S Letter Dated l /
lv/ 1 T t-
:l�i als Transferred to Server (Permits Folder) 7 r�? s BIMS Final Updates: Events _Limits
Sc Final Does / PDF (w/ signature) [Date] 2 B MS /Limits Double-check Email to Charles
Email Finals to SC+--S P"- At CA411'4r S _ Date
R i r aru( t'"'"' `Y wr �%�e h ti�t� Gtx ��y n c • c.o wl
Version 07Nov2014 /

�VI" �ee
Denard, Derek
From: Hawkins, Randy <[e-mail]>
Sent: Thursday, March 05, 2015 7:58 AM
To: Denard, Derek
Cc: Jarrell, Jackie
Subject: Comments on NPDES renewal draft permit for Lee S Dukes Water Plant
Derek,
There are no comments on the new tests and parameters. However there are two general errors. You have listed Dukes
have 2 filters, we actually have 4. You listed that we feed polymer, but we do not feed any polymer at Dukes.
When do you expect we will get the final version of the permit?
Thank you.
Randy Hawkins, Utilities Operations Manager
CHARLOTTE WATER
P: 704-948-6954 Extension 224 / C: 704-201-8344

The Charlotte Observer Publishing Co.
Charlotte, NC
North Carolina } ss Affidavit of Publication
Mecklenburg County }
Charlotte Observer
REFERENCE: 145583 NCDENR/DWQ/POINT SOURCE
0001537949 Public Notice North Carolina Environmental
Management Commission/NPDES Unit 1617
Mail Service Center Raleigh, NC 27699-1617
Before the undersigned, a Notary Public of said County and
State, duly authorized to administer oaths affirmations, etc.,
personally appeared, being duly sworn or affirmed according
to law, doth depose and say that he/she is a representative of
The Charlotte Observer Publishing Company, a corporation
organized and doing business under the laws of the State of
Delaware, and publishing a newspaper known as The
Charlotte Observer in the city of Charlotte, County of
Mecklenburg, and State of North Carolina and that as such
he/she is familiar with the books, records, files, and business
of said Corporation and by reference to the files of said
publication, the attached advertisement was inserted. The
following is correctly copied from the books and files of the
aforesaid Corporation and Publication.
PUBLISHED ON: 01/30/2015
AD SPACE: 48 LINES
FILED ON: 01/30/2015
NAME:
PUBLIC NOTICE
NMN Carofx,a EeMrptmenW Mai
C nnissionMPDES Unit
1617 Mail Service Canter
Raleigh, NC 276 1617
Notice of Intent to Woo a
Wastewater Permit
The NarM Caroline EnN
notice
TITLE:
DATE:
In Testi Whereof I have hereunto set my hand and affixed my seal, the day and year aforesaid.
Notary: ,G(My commission Expires:
My Commission Expires May 27. 2016

-Al -
HCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
January 28, 2014
MEMORANDUM
To: Britt Setzer
Regional Engineer (DWR/PWSS)
Mooresville Regional Office
From: Derek C. Denard
DWQ / NPDES Program
919-807-6307; Fax [phone]; [e-mail]
Donald van der Vaart
Secretary
Subject: Review of Discharge to the McDowell Creek (WS-IV; CA),
Catawba River Basin
Renewal of Individual NPDES Permit for existing conventional technology WTP
for: NPDES NCO084387
Charlotte Mecklenburg Utilities — Lee S. Duke WTP
located at 7980 Babe Stillwell Farm Road, Huntersville, NC 28078
Mecklenburg County
Please provide your comments by March 6, 2015 [email OK]
RESPONSE:
X I have reviewed the draft permit and determined that the proposed discharge is not located
sufficiently close to any existing or known proposed public water supply intake (_miles) so as to
create an adverse effect on water quality. The DWR concurs with the issuance of this permit
provided the Permittee properly operates and maintains the facility; the Permittee meets the stated
effluent limits prior to discharge; and the discharge does not contravene the designated water
quality standards.
I concur with issuance of the above permit provided the following conditions are met:
I oppose the issuance of the above permit based on reasons stated below, or attached:
Signed: Date: 1/29/2015_
cc: file
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone]Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer — Made in part by recycled paper

Denard, Derek
From: Allocco, Marcia
Sent: Tuesday, January 27, 2015 4:46 PM
To: Denard, Derek
Subject: RE: Charlotte Mecklenburg Utilities NPDES permit/Name Change
I saw that but figured it would be caught on the final
From: Denard, Derek
Sent: Tuesday, January 27, 2015 4:44 PM
To: Allocco, Marcia
Subject: RE: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Hey you missed the change for our director to the new acting director. Everything changed while I was writing this
one. It's about time to call it a day. O
From: Allocco, Marcia
Sent: Tuesday, January 27, 2015 4:41 PM
To: Denard, Derek
Subject: RE: Charlotte Mecklenburg Utilities NPDES permit/Name Change
I did not catch Aquatic tox until today so baby steps Q
From: Denard, Derek
Sent: Tuesday, January 27, 2015 4:22 PM
To: Allocco, Marcia
Subject: RE: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Ok. Sounds like they changed it after the renewal application. I looked at the current versions for TOX. Somehow I have
been an older one that was corrected for DWR. I copy the Aquatic Tox Unit and no one has ever caught it. I will pull the
file out of the public notice basket and make the changes before I leave.
Thanks,
Derek
From: Allocco, Marcia
Sent: Tuesday, January 27, 2015 4:15 PM
To: Denard, Derek
Subject: FW: Charlotte Mecklenburg Utilities NPDES permit/Name Change
See below info regarding name change
From: Allocco, Marcia
Sent: Wednesday, January 07, 2015 12:00 PM
To: Weaver, Charles; Belnick, Tom; Sledge, Bob
Cc: Thedford, Wren
Subject: RE: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Just called the McAlpine.WWTQ,hp and staff there noted that the name change is for aloof CWJD and is in effect
already. I conveyed that they would need to submit Name/Ownership Change forms for all facilities.

From: Weaver, Charles
Sent: Wednesday, January 07, 2015 10:14 AM
To: Belnick, Tom; Sledge, Bob; Allocco, Marcia
Cc: Thedford, Wren
Subject: FW: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Has CMUD changed its name to Charlotte Water? It seems so, based on the comments from Mr. Hawkins. Have any of
you heard about this?
Changing CMUD to Charlotte Water will affect many permits and facilities in BIMS, so I want to be certain the change is
necessary.
CHW
From: Thedford, Wren -
Sent: Wednesday, January 07, 2015 9:56 AM
To: Weaver, Charles
Subject: FW: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Hello Charles,
In the email below Randy stated that Mecklenburg Utilities Department name has changed to Charlotte
Water. I updated the name in BIMS, and sent Randy a copy of the Name Change Form. In his email below, he states
that he didn't think he needed to do that. Do I need to change the name back to Mecklenburg Utilities Department?
From: Hawkins, Randy [mailto:rhawkinsOci.charlotte.nc.us]
Sent: Wednesday, January 07, 2015 9:49 AM
To: Thedford, Wren
Subject: RE: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Wren,
Upon review, completion of form may not be needed. The plant names have not changed, we are still the City of
Charlotte, only the division name has changed from Charlotte Mecklenburg Utilities Department to Charlotte Water. If
you feel that the form needs to be completed please let me know. I just wanted to make you aware of the change for
the division for correspondence purposes. If you currently address us by the Plant names or by the City of Charlotte that
will not change.
Randy Hawkins
Charlotte Water Operations Manager
Phone # [phone] Extension 224
Cell # 704-201-8344
From: Thedford, Wren f mailto:wren.thedfordOncdenr.gov]
Sent: Wednesday, January 07, 2015 8:17 AM
To: Hawkins, Randy
Subject: RE: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Hello Randy,
I have attached-o_namd change form for you. I have updated the name changed to Charlotte Water but need
paperwork on file. Let me know if you have any questions.

From: Hawkins, Randy rmailto:rhawkins(&ci.charlotte.nc.us]
Sent: Tuesday, January 06, 2015 4:32 PM
To: Thedford, Wren
Cc: Huber, John; Jarrell, Jackie; Crowe, Terry; Banick, Dave; Duckworth, Donna
Subject: Charlotte Mecklenburg Utilities NPDES permit/Name Change
Wren,
You will be sending the NPDES 5 year renewal draft permits to us soon for NPDES numbers NC0084549 and
NC0084387. Please note that Charlotte Mecklenburg Utilities Department has rebranded and changed our name to
Charlotte Water. Please notate the change for future correspondence.
Randy Hawkins
Charlotte Water Operations Manager
Phone # [phone] Extension 224
Cell # 704-201-8344

Denard, Derek ! `� l�ki{l l.t L`' W
From: Allocco, Marcia
Sent: Tuesday, January 27, 2015 3:48 PM
To: Denard, Derek
Subject: RE: Draft NCO084387 Lee S. Duke WTP Charlotte -Mecklenburg Utilities
Hi Derek,
Just some minor comments on the draft permit; nothing technical.
• Charlotte Mecklenburg Utilities is now Charlotte Water (owner noted in BIMS) so you'll have to change
throughout including map page; Change owner in address line for final permit (City of Charlotte to Charlotte
Water)
• Item #2 on the Supplement page (2 of 6) has Creek twice -delete repeated word
• Chronic Toxicity page — I had to look up other information yesterday and there is no ESS with DWR anymore;
website notes Water Science section so should the info in toxicity section be updated to match?
• Facility on Charlotte Water website is listed as Lee S Dukes Jr. WTP; do we need to update name in BIMS and
permit? http://charmeck.org/city/charlotte/Utilities/Divisions/Pages/LeeDukes.aspx
Regards,
Marcia
From: Denard, Derek
Sent: Tuesday, January 27, 2015 9:55 AM
To: Parker, Michael; Allocco, Marcia; Bell, Wes; Meadows, Susan; Reid, Steve
Subject: Draft NC0084387 Lee S. Duke WTP Charlotte -Mecklenburg Utilities
Please find the attached draft permit documents for NCO084387 Lee S. Duke WTP Charlotte -Mecklenburg
Utilities. Please provide your comments, if any, to me no later than March 6, 2015.
Thanks,
Derek
AsDerek C Denard
Enrironm.=nt9 Spedaftt
NCDENR DWI-sionof Water Resource
Water QuaaV Permitting Sector.
Compti-ante & Expected P_xminxg Dr-1
(9Li WI-M7
deretcdmud@fx&�,Om
1el?th"'. Sxn`ca CGntsr. Raixgh. NC2?5941517
.r......c-c_nc:c :r.cgMc:./w'ih•'G/DxmDda
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

{.w t r7v� l.p ✓�, Ytt.�ni�
Denard, Derek
From: Allocco, Marcia
Sent: Tuesday, October 28, 2014 3:15 PM
To: Denard, Derek
Subject: NCO084387 - Lee S. Duke WTP renewal
Hi Derek,
Since the Lee S. Dukes WTP is not a major facility MRO does not plan to provide a formal staff report as part of the
permit renewal. Since I did the last compliance inspection I figured I could review the application and provide
comments.
They were compliant during the last compliance evaluation inspection on May 22, 2014. They had very good
recordkeeping system and laboratory records to back-up analyses completed on site. They needed to tighten -up
a few things regarding field lab meter calibrations/verifications but I am confident the requests I made will be
fulfilled. Their effluent was clear and did not appear to be affecting the receiving stream.
• MRO would support renewal of the NPDES permit.
If you have any questions please do not hesitate to contact me.
Regards,
Marcia
MR
Dlvlslon of Water Resources
Marcia Allocco, MS — Senior Environmental Specialist
NC Dept. of Environment & Natural Resources (NCDENR)
Division of Water Resources - Water Quality Regional Operations
610 East Center Ave., Suite 301, Mooresville, NC 28115
Phone: [phone] Fax:[phone]
marcia.aIlocco(a ncdenr.00v
www.ncwatercivality.org
Please note that effective Oct. 15, 2013, the MRO copy fee is $0.05/page. This applies to all copies; the first 25 pages
are no longer free.
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulation.

DENR / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit NCO084387
Derek Denard, Compliance & Expedited Permitting Unit / 919-807-6307 09Mar201 f
Facility `Information
Applicant/Facilrty Name
Charlotte Water
Lee S. Duke, Jr. Water Treatment Plant (WTP)
Applicant:Addxess 7980 Babe Stillwell Road, Huntersville, NC 28078
Facility ,Address "` 7980 Babe Stillwell Road, Huntersville, NC 28078
Permitted Flow .(MGDj
Not limited
Type :of Waste
Water Plants and
filter -backwash -
Factl�ty=Class.
Physical Chemic
Permit Status
Renewal
Stream Ch
Receiving Stream
McDowell Creek
Stream Segment
11-115-(5)
Summer 7Q 10 (cfsY
1.8
Winter. 7Q10 (cfs)
4.2
30Q2 (cfs) -
4.8
Average Flow .(cfs)
31.0
IWC %a
36.6%
aracteristics
Water Conditioning Discharge — dechlorinated
Conventional WTP System
all
County
Mecklenburg
Regional
Office
MRO
-Str`eam Classification
WS-IV; CA
Drainage basin,.'-
Catawba
Subbasin..%
03-08-33
Use Support
Aquatic Life
303(4)Listed
Impaired, Poor
Bioclassification
State_ Grid
F 15NW
USES: Topo Quad
Lake Norman S
Facility SummM
This facility is a conventional technology water treatment plant [coagulation, flocculation, sedimentation,
and filtration] with discharge of wastewaters from media filter backwash and sedimentation basins with a
design potable flowrate of 25.31 MGD and a maximum monthly average wastewater discharge of
0.670 MGD based on data submitted. The facility consists of the following water and wastewater treatment
units:
• three (3) stages of flocculation
• two (2) sedimentation basins
• chlorination equipment
• four (4) filters
• three (3) 9 MG clearwells
• an equalization basin
• a clarifier
Y • dechlorination equipment
• a sludge thickener
• a residuals storage lagoon
• chemical usage consists of
o carbon
o aluminum sulfate
o chlorine
Fact Sheet
Renewal 2015 -- NPDES Permit NCO084387
Page 1

o potassium permanganate
o fluoride
o lime
o phosphate
o sodium bisulfite
Monthly average FLOW (MGD) — Last 36 months of reported discharge Nov2010-0ct2013:
[Ave 0.433 MGD; Maximum, Monthly average flow = 0.670 MGD]
Eligibility for Coverage under the General Permit NCG590000 — The Lee S. Duke WTP is not eligible for
the general permit because there is not enough toxicity data. The facility needs an additional year (four
quarters) of passing toxicity tests to be eligible for the general permit.
Toxici — With an IWC >0.25%, this permit requires Chronic Whole Effluent Toxicity (WET) testing
using Ceriodaphnia dubia to be performed as a 7-day pass/fail test at 37% effluent concentration, during
January, April, July and October [TGP3B]. Eight (8) toxicity tests over the past two years were reported
as "passed".
Renewal Summary — This permit reflects discharge at Outfall 001. DWR updated the facility description
and Map; added parameter codes to Section A. (I.); added Electronic Reporting - Discharge Monitoring
Reports page [Section A. (3.]; added monthly quarterly Total Fluoride monitoring; and removed Total
Iron, Copper and Manganese monitoring.
Stream — Discharge from WTP for Outfall 001 is into McDowell Creek [Stream Segment 11-115-(5)].
The segment [11-115-(5)] is currently listed as impaired for poor bioclassification in the 2012 North
Carolina 303(d) List.
RPA — A Reasonable Potential Analysis (RPA) was conducted on Copper, Aluminum, Iron and Manganese
effluent parameters data because Discharge Monitoring Reports (DMRs) reported concentration above
method -detection levels (MDLs), [with the exception of Copper], for the past three (3) years (Nov2010-
Oct2013) that discharge was reported. [See attached RPA summary sheets.]
Fact Sheet
Renewal 2015 -- NPDES Permit NCO084387
Page 2

Lee S. Duke WTP 2014 Freshwater RPA - 95% Probability/95% Confidence
NCO084387
MAXIMUM DATA POINTS = 58
Qw(MOD)= 0.67
WWTP/WTP Class: PC-1
1QIOS(cfs)= 1.51
IWC @ 1Q10S = 40.7%
7QIOS(cfs)= 1.80
IWC @7Q10S= 36.6%
7Q10W(cfs)= 4.20
IWC@7QIOW= 19.8%
30Q2 (cfs)= 4.80
IWC @ 30Q2 = 17.8%
Avg, Stream Flow, QA (cfs)= 31.00
IWC @ QA= 3.2%
Receiving Stream: McDowell Creek
Stream Class: WS-IV; CA
Outfall 001
Qw = 0.67 MGD
PARAMETER
STANDARDS & CRITERIA (2)
w
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
(1)
NC WQS / Applied '/e FAV /
a
z
Max Pred
n # Det. Allowable Cw
Chronic Standard Acute
Cw
Acute: 17.9
No RP, Predicted Max <50%of Allowable Cw - No
Copper (AL)
NC
7 FW(7QIOs) 7.3
ug/L
11 0
3.0
Monitoring required
Chronic: 19.1
No RP, Predictetl Max < 50%of Allowable Cw - No
No value> Allowable Cw
Monitoring required
Acute: NO WQS
Aluminum
NC
s''.urn II11(7Q10s)
µg/L
58 58
2,600.0
_ _ _____ _ __
_ _ _
—NO--RP
Chronic: 21866.2
, Predicted Max <50%of Allowable Cw-No
Monitoring required; however Alum used, montlor
No value> Allowable Cw
quarterly
Acute: NO WQS
Iron
NC
1000 FW(7QIOs)
µg/L
58 15
180.0
_ _
Chronic: 2733.3
_ _ _
No RP, Predicted Max <--------------
of Allowable Cw No
No value> Allowable Cw
Monitoring required
Acute: NO WQS
Manganese
NC
200 WS(7QIOs)
pg/L
11 11
250.9
_____
Chronic 546.7
NO RP, Predictetl Max <50%of Allowable Cw - No
No value> Allowable Cw
Monitoring required
NCO084387 9595 FRESHWATER RPA2014_21.xlsm, rpa
Page 1 0! 1 1/16/2015

REASONABLE POTENTIAL ANALYSIS
9
19
Use 'PASTE SPECIAL
Use"PASTE SPECIAL
Copper (AL)
Values"then"COPY"
Aluminum
vawes'tnen ••c,PW
. Maximum data
. Maximum data
points= 58
points = 68
Date
Data
BDL=1/2DL
Results
Date Data
BDL-112DL
Results
1
7/3/1905
<
5
2.5
Sid Dev.
0.4523
1
7/2/1905
696
696
Sid Dev.
440.7243
2
7/3/1905
<
5
2.5
Mean
2.3636
2
7/2/1905
166
166
Mean
534.3966
3.
7/3/1905
<
5
2.5
C.V.
0,1913
3
7/2/1905
240
240
C.V.
0.8247
4
7/4/1905
<
5
2.5
n
11
4
7/2/1905
253
253
n
58
5
7/4/1905
<
5
2.5
5
7/2/1905
420
420
6.
7/4/1905
<
5
2.5
Mult Factor =
1.19
6
7/2/1905
180
180
Mult Factor =
1.00
7.
7/4/1905
<
2
1
Max. Value
2.5 u9/L
7
7/2/1905
340
340
Max. Value
2600.0 pg/L
8
7/5/1905
<
5
2.5
Max. Fred Cw
3.0 ug/L
8
7/2/1905
650
650
Max. Pred Cw
2600.0 pg/L
9.
7/5/1905
<
5
2.5
9
7/2/1905
500
500
10
7/5/1905
<
5
2.5
10.
7/2/1905
350
350
11
7/5/1905
<
5
2.5
11
7/2/1905
640
640
12
12.
7/2/1905
220
220
13
13.
7/2/1905
110
110
14.
14
7/2/1905
370
370
15
15
7/2/1905
330
330
16
16
7/2/1905
520
520
17
17
7/2/1905
510
510
18
18
7/2/1905
430
430
19
19.
7/2/1905
260
260
20
20.
7/2/1905
480
480
21
21
7/2/1905
260
260
22
22
7/2/1905
620
620
23
23
7/2/1905
670
670
24
24
7/2/1905
650
660
25.
25
712/1905
310
310
26
26
7/2/1905
560
560
27
27
7/2/1905
410
410
28
28
7/2/1905
250
250
29
29
7/2/1905
210
210
30
30
7/2/1905
610
610
31
31
7/2/1905
830
830
32
32
7/2/1905
370
370
33
33
7/2/1905
380
380
34
34
7/2/1905
430
430
35
35
7/211905
960
960
36
36
7/2/1905
1100
1100
37
37-
7/2/1905
240
240
38
38
7/2/1905
1600
1600
39.
39
7/2/1905
820
820
40
40
7/2/1905
390
390
41
41
7/2/1905
310
310
42
42
7/2/1905
720
720
43
43
7/2/1905
550
550
44
44
7/3/1905
390
390
45.
45
7/3/1905
470
470
46
46
7/3/1905
550
550
47
47
7/3/1905
340
340
48
48
7/3/1905
180
180
49
49
7/3/1905
540
540
50
50
7/3/1905
270
270
51-
51
7/4/1905
1800
1800
52
52
7/4/1905
230
230
53
53
7/4/1905
390
390
54
54
7/4/1905
2600
2600
55
55
7/5/1905
1600
1600
56
56
7/5/1905
230
230
57:
57
7/5/1905
270
270
58
58
7/5/1905
220
220
NC0084387 9595 FRESHWATER RPA2014_21.xlsm, data
1 - 1/16/2015

REASONABLE POTENTIAL ANALYSIS
20
Use "PASTE SPECIAL
21
_
Iron
Values" then"COPY"
. Maxbnum data
points = 50
Date
Data
BDL=1/2DL
Results
1
701905
114
114
Sld Dev.
34.5214
1
2
7/2/1905
<
50
25
Mean
42.7586
2
3
7/2/1905
<
50
25
C.V.
0.8074
3
4
7/2/1905
<
50
25
n
58
4
5
7/2/1905
82
82
5
6
7/2/1905
<
50
25
Mult Factor =
1.00
6
7
7/2/1905
<
50
25
Max. Value
180.0 pg/L
7
8
7/2/1905
92
92
Max. Fred Cw
180.0 pg/L
8
9
7/2/1905
88
88
9
10
7/2/1905
60
60
10
11
701905
74
74
11
12
7/2/1905
<
50
25
12
13
7/2/1905
<
50
25
13
14
7/2/1905
100
100
14
15
7/2/1905
<
50
25
15
16.
7/2/1905
<
50
25
16
17
7/2/1905
<
50
25
17
18
7/2/1905
<
50
25
18
19
7/2/1905
<
50
25
19
20
7/2/1905
<
50
25
20
21
7/2/1905
<
50
25
21
22
7/2/1905
<
50
25
22
23
7/2/1905
<
50
25
23
24
7/2/1905
<
50
25
24
25
7/2/1905
<
50
25
25
26
7/2/1905
<
50
25
26
27
7/2/1905
<
50
25
27
28
7/2/1905
<
50
25
28
29
7/2/1905
<
50
25
29
30
7/2/1905
<
50
25
30
31
7/2/1905
<
50
25
31
32
7/2/1905
<
50
25
32
33
7/2/1905
<
50
25
33
34
7/2/1905
<
50
25
34
35
7/2/1905
67
87
35
36
7/2/1905
92
92
36
37
7/2/1905
<
50
25
37
38
701905
110
110
38
39
7/2/1905
58
58
39
40
7/2/1905
<
50
25
40
41
7/2/1905
<
50
25
41
42
7/2/1905
55
55
42
43
7/2/1905
<
50
25
43
44
7/3/1905
<
50
25
44
45
7/3/1905
<
50
25
45
46
7/3/1905
<
50
25
46
47
7/3/1905
<
50
25
47
48
7/311905
<
50
25
48
49
7/3/1905
<
50
25
49
50
7/3/1905
<
50
25
50
51'
7/4/1905
180
180
51
52
7/4/1905
<
50
25
52
53
7/4/1905
<
50
25
53
54
7/4/1905
140
140
54
55
7/5/1905
93
93
55
56
7/5/1905
<
50
25
56
57
7/5/1905
<
50
25
57
58
7/5/1905
<
50
25
58
Use 'PASTE SPECIAL
Manganese
Values' then 'COPY'
—
Maximum data
points - 60
Date
Data
BDL=1/2DL
Results
7/3/1905
27
27
Still Dev.
42.7793
7/3/1905
27
27
Mean
53.4545
7/3/1905
46
46
C.V.
0.8003
7/4/1905
##
130
n
11
7/4/1905
30
30
7/4/1905
25
25
Mult Factor =
1.93
7/4/1905
##
130
Max. Value
130.0 pg/L
7/5/1905
93
93
Max. Fred Cw
250.9 pg/L
7/5/1905
32
32
7/5/1905
22
22
7/5/1905
26
26
0
NCO0843879595 FRESHWATER RPA2014 21.xlsm, data
1/1612015

2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW N(Q5
Facility Name
Lee S. Duke WTP
W WTP/WTP Class
PC-1
NPDES Permit
NCO084387
Outfall
001
Flow, Ow (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7010w (cfs)
30Q2 (cfs)
CIA (cfs)
1010s (cfs)
Data Sources)
0.670
McDowell Creek
WS-IV; CA
1.80
4.20
4.80
31.00
1.51 ...... _.. _....... ..
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Pads
Par16
Per17
Par18
Par19
Par20
Par21
Par22
Table 2. Parameters of Concern
Name Type Chronic Modlre, Acute POL
0
a
Units
El
11
11
Copper (AL)
NC
7
FW
7.3
ug/L
❑
El
EJ
ET
El
Aluminum
NC
8000
HH
pg/L
❑
Iron
NC
1000
FW
pg/L
Manganese
NC
200
WS
pg/L
❑
NCO084387 9595 FRESHWATER RPA2014_21.xlsm, input
1/16/2015

IWC Calculations
Facility: Lee S. Duke WTP
NC0084387
Prepared By: Derek Denard
Enter Design Flow (MGD): 0.67
Enter s7Q 10 (cfs): 1.8
Enter w7Q10 (cfs): 4.2
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/1)
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
1.8
s7Q10 (CFS)
1.8
DESIGN FLOW (MGD)
0.67
DESIGN FLOW (MGD)
0.67
DESIGN FLOW (CFS)
1.0385
DESIGN FLOW (CFS)
1.0385
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
36.59
IWC (%)
36.59
Allowable Cone. (ug/1)
46
Allowable Cone. (mg/1)
2.4
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Fecal Coliform
w7Q10 (CFS)
4.2
Monthly Average Limit:
2001100ml DESIGN FLOW (MGD)
0.67
(If DF >331; Monitor)
DESIGN FLOW (CFS)
1.0385
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
2.73 Upstream Bkgd (mg/1)
0.22
IWC (%)
19.82
Allowable Cone. (mg/1)
8.2
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
4. BAT for Minor Domestics: 2 mg/I (summer) and 4 mg/I (winter)
5. BAT for Major Municipals: 1 mg/I (year-round)
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009

Permit Reviewer Notes - Derek Denard
Permit Number:
Ncoog,2
Applicant/Facility Name:
C4,3 by
Permit Status: J
Region I Office: �� 6
Latitude: .3 S, 2 S Z� Z
Longitude:
Facility Class:
pc—1
County:
CG (ih bar
Outfall: O C) /
Flow:
Applicant Address: �j / �^
( /a Y� r�1 i C rqr �'
Facility Address: -�
Type of Waste: G l7b o / / _
IO
Stream Notes
Receiving Stream: }� C/
l'PeK
Stream Segment:
Stream Classification:
Drainage Basin: C qr b
Q ti/
Summer'jQ10 (cfs): 6
0
Subbasin:
Winter 7Q10 (cfs):
HUC Code: p 30 SO D S
30Q2 (cfs): g
State Grid:
Average Flow (cfs):
USGS Topo Quad:
IWC (90):
dl
303 (d):
y�.od� I%1ror�ll;�)ca,��+n
�atw rc LrF�
-®6699-
a � v�J arc
G CwZ-YD'?
A
-rill l NsQ ih�7
vl ? de G
avP
G 2$. L ftk& >orrM(,n
rN v.
y /V1aP0 errs ISB /14 z K r �, �, � �;,, Z �� ,`�i.k_�
�cw

Denard, Derek
From: Allocco, Marcia
Sent: Tuesday, October 28, 2014 3:15 PM
To: Denard, Derek
Subject: NCO084387 - Lee S. Duke WTP renewal
Hi Derek,
Since the Lee S. Dukes WTP is not a major facility MRO does not plan to provide a formal staff report as part of the
permit renewal. Since I did the last compliance inspection I figured I could review the application and provide
comments.
• They were compliant during the last compliance evaluation inspection on May 22, 2014. They had very good
recordkeeping system and laboratory records to back-up analyses completed on site. They needed to tighten -up
a few things regarding field lab meter calibrations/verifications but I am confident the requests I made will be
fulfilled. Their effluent was clear and did not appear to be affecting the receiving stream.
• MRO would support renewal of the NPDES permit.
If you have any questions please do not hesitate to contact me.
Regards,
Marcia
Dlvlsion of Water Resources
Marcia Allocco, MS — Senior Environmental Specialist
NC Dept. of Environment & Natural Resources (NCDENR)
Division of Water Resources - Water Quality Regional Operations
610 East Center Ave., Suite 301, Mooresville, NC 28115
Phone: [phone] Fax: [phone]
marcia.allocco(@ncdenr.gov
www. ncwaterquality.org
Please note that effective Oct. 15, 2013, the MRO copy fee is $0.05/page. This applies to all copies; the first 25 pages
are no longer free.
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulation.

•
CHARLOTTE,:.
September 1, 2014
Division of Water Resources
WQ Permitting Section — NPDES
1617 Mail Service Center
Raleigh NC 27699-1617
Subject: Renewal NPDES Permit # NCO084387
Lee S. Dukes Water Treatment Plant
Mecklenburg County
WQ Permitting Section,
RECEIVED/DENR/DWR
SEP 2 4 2014
Water Quality
Permitting'.Section
In accordance with our permit we are requesting renewal prior to our expiration date of February 28,
2015. Enclosed is our NPDES Permit Applications Short Form C for the renewal of NCO084387 for the
Lee S. Dukes Water Treatment Plant
Also attached to the Short Form C are:
• Response for describing the treatment process for raw water (#7)
• Response for wastewater and treated process for wastewater generated by the facility (#8)
• Solids Handling Plan
• Plant Flow Schematic
• Outfall/discharge location
If you have any questions, please contact me at 704-399-2426 extension 222 or Randy Hawkins at 704-
201-8344.
Sincerely, \ C
t
John C. Hu er
Chief of Operations
City of Charlotte
Charlotte -Mecklenburg Utility Department
CHARLOTTE-MECKLENBURG UTILITIES
Water Treatment Division 5200 Brookshire Boulevard
Charlotte, NO 28216
PH: 704/399-2426
FAX: [phone]
•

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
N. C. Department of Environment and Natural Resources RECEIVEDIDENRIDWR
Division of Water Quality /. NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617 S E P 2 4 20 %
Water duality
NPDES Permit Number INC00 84 3 8 7 Section
If you are completing this form in computer use the TAB key or the up - down arrows to. move from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise, please print or type.
1. Contact Information:
Owner Name
Facility Name
Lee S Duke WTP
Mailing Address
7980 Babe Stillwell Farm Road
City
Huntersville
State / Zip Code
North Carolina 28078
Telephone Number
( 704 9 4 8- 6 9 5 4
Fax.Number
h04) 948-7581
e-mail Address
c7hani r_kfdei _ eha rl oi-t-e _ nc _ Ls
2. Location of facility producing discharge:
Check here if same as above
Street Address or State Road
City
State / Zip Code
County
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
.Name City of Charlotte
Mailing Address 5200 Brookshire Blvd
City Charlotte
State / Zip Code N.C. 28216
Telephone Number (7 0 4) 3 9 9- 2 4 2 6
Fax Number � 04) 393-9163
4. Ownership Status:
Federal 0 State ❑ Private ❑ Public]
Pagel of 3 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
S. Type of treatment- plant:
Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
❑ Ion Exchange (Sodium Cycle Cationic ion exchange)
❑ Green Sand Filter (No sodium recharge).
❑ Membrane Technology (RO, nanofiltration)
Check here if the treatment process also uses a water softener ❑
6. Description of source water(s) (i.e. groundwater, surface water)
7, Describe the treatment process(es) for the raw water:
See Attached
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
See Attached
1
9. Number of separate discharge points: 1
Outfall Identification number(s) _() () 1
10. Frequency of discharge: Continuous ❑ Intermittent
If intermittent:
Days per week discharge occurs: 7 Duration: Approximately 4hrs/day
11. Plant design potable flowrate2 5.31 • MGD
Backwash or reject flow .197 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
McDowell Creek
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum / aluminum sulfate Ye No
Page 2 of 3 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Iron sulfate / ferrous sulfate Yes i)
Fluoride Yes No
Ammonia nitrogen / Chloramines Yes �o
Zinc -orthophosphate or sweetwater CP1236 Yes
List any other additives below: RECEIVEDIDENRIDWR
Chlorine, Carbon, KMN04, Lime, Li Quid Linear "��-4 2014
Phosphate, Sodium Bisulfite
Weter au811tv
A@fmg Se on
14. Is this facility located on Indian country? (check one)
Yes ❑
No
15. Additional Information:
Provide a schematic of flow through the facility, include flow volumes at all points in
the water treatment process. The plan should show the point[s] of addition for
chemicals and all discharges routed to an outfall [including stormwater].
Solids Handling Plan
Please see Attached
16. NEW Applicants
Information needed in addition to items 1-1 S:
New applicants are highly encouraged to contact a permit coordinator with the
NCDENR Customer Service Center.
Was the Customer Service Center contacted? ❑ Yes ❑ No
Analyses of source water collected
Engineering Alternative Analysis
Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
ohn C. Huber Chief of Operations
tAPriff ::)of erson i Title
I I LJ 9 1/14
IRature of ADDlicant Date
forth CaroCna General Statute 143-215.6 (b)(2) provides that Any person who knowingly makes any false statement representation, or certification in any application,
record, report, plan, or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that
Article, or who falsities, tampers with, or knowingly renders inaccurate any recording or monitoring deviceormethod required to be operated or maintained under Article 21
or regulations of the Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to exceed $25,000, or by
imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5
years, or both, for a similar offense.)
Page 3 of 3 Version 5/2012

7. Describe the treatment processes for the raw water.
Raw water is treated with potassium permanganate and carbon as needed. Aluminum sulfate is
added at the head works of the plant. The raw water then passes through three stages of
flocculation before entering the sedimentation basins. Chlorine is added just before filtration.
Raw water is then filtered and lime and chlorine are added. The water is then dosed with
additional chlorine and sent to the clearWells.
8. Describe the wastewater and the treatment processes for wastewater generated by the
facility.
Solids are generated from the water treatment process and consist mostly of alum sludge.
Solids generated from the sedimentation basins are discharged thru a gravity thickener and then
discharged to a holding lagoon. Solids generated from filter backwashes are discharged to an
EQ basin. The solids from the EQ basin are sent to a clarifier. The solids are then sent to the
thickener and then to the holding lagoon. Clarified water goes over the weir of the clarifier,
through a de -chlorination chamber to the NPDES discharge point. Solids from the holding
lagoon are removed and land applied in accordance with our land application permit.
Solids Plan
1. Solids generated from the sedimentation basins are discharged thru a gravity thickener
and then discharged to a holding lagoon.
2. Solids generated from filter backwashes are discharged to an EQ basin. The solids from
the EQ basin are sent to a clarifier. The solids are then sent to the thickener and then to
the holding lagoon. Clarified water goes over the weir of the clarifier, through a de -
chlorination chamber to the NPDES discharge point 001.
3. Solids from the holding lagoon are removed and land applied by a contractor to be land
applied as a liquid. We also have the ability to tanker the liquid to a belt press for
pressing then land applied or taken to a land fill.
4. The contractor must follow the permit # W.Q. 0000057 for solids disposal.

Lee S. Dukes Water Treatment Plant
Process Flow Diagram as of 28 January 2011.
Carbon Alum nw.- KMaO� nCtgodno Chlorino Fburide Lime CieatVVel
IP2—:
1
9 MG
Sedimentation Filter
East Module 1 -�' East Module 1
Clearwel
Lake Norman Fintshod 2
High Service
To 978
tNalor 9 MG
PAW W � ro
Pump Station
Zone
v,�)r w Sedimentation Filter
_
` East Module 2 East Modulo 2
v � �` � M
d
e � Cloarwel
3
9 MG
y Backwash
r Gw
el.usate
%;�` water
3,y lymer
Sad Basln Clarlaer
RosWuata Ettlaent
Dechlorination
EQ Clarifier
Basin
Coritact
To Creek
Chamber
8aI[ds
I' lT
/
Thlckenod
Roslduals
]�
� � U m �..10
Thickener
Lagoon
rl
f 1 �YJ
�^
Land Application
m
C 4
'r* b V
CO jo
CD o Z
20
70