NC0084549_Permit Issuance_20050630

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
June 30, 2005
Mr. John C. Huber
CMUD
5200 Brookshire Boulevard
Charlotte, North Carolina 28216
Subject: Issuance of NPDES Permit NCO084549
Franklin WTP
Mecklenburg County
Dear Mr. Huber:
Division personnel have reviewed and approved your application for renewal of the subject
permit. Accordingly, we are forwarding the attached NPDES discharge permit. 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 May 9, 1994
(or as subsequently amended) .
This final permit includes no major changes from the draft permit sent to you on May 11, 2005.
However, the Division offers the following responses to your comments dated May 26, 2005:
➢ The Daily Maximum limit for Total Residual Chlorine [outfall 001 ] takes effect on February
112007. The Division cannot grant your request to change this limit. TRC limits are
assigned based on the flow of the receiving stream. The unnamed tributary to Stewart
Creek is considered a zero -flow stream, and thus receives a lower TRC limit than the
receiving stream at the North Mecklenburg Water Plant [which has positive flow] . If you
can provide flow data showing that the stream has constant positive flow, the limit may be
changed. Contact Mr. Curtis Weaver of the USGS (919 571-4043) for more information
on determining flow values for small streams.
➢ The Division cannot presently eliminate monitoring requirements for the secondary
discharge point because TRC is present in the discharge. The U.S. EPA has made reduction
of instream TRC a priority for North Carolina; that new emphasis is reflected in the
imposition of TRC limits at facilities [such as your municipality's water treatment plants]
that previously had TRC monitoring only. We support your plan to eliminate the sources
of TRC from this discharge. Once that is done, the Division can consider removal of
monitoring. We advise you to keep the Mooresville Regional Office current on your
progress in this matter; as their input will be critical to any decision regarding monitoring
of this discharge.
➢ The Division has not separately designated 002 on the permit map, as monitoring of that
discharge may be removed during the permit cycle. However, please submit a facility
diagram [including the location of 002 relative to outfall 0011 so that the location of 002
and the various water sources on -site is completely documented.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 One
512 North Salisbury Street, Raleigh, North Carolina 27604 NorthCarohna
Phone: [phone] / FAX [phone] / Internet: h2o.enr.state.nc.us e e Natwully
An Equal Opportunity/Affirmative Action Employer — 50 /o Recycled/10 /a Post Consumer Paper

If any parts, measurement frequencies or sampling requirements contained in this permit 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.
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 Charles Weaver at telephone
number [phone], extension 511.
Sincerely,
ORIGINAL SIGNED BY
SUSAN A. WILSON
Alan W. Klimek, P.E.
cc: Central Files
Mooresville Regional Office/Surface Water Protection
NPDES Unit

Permit NCO084549
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
Charlotte -Mecklenburg Utility Department
is hereby authorized to discharge wastewater from a facility located at the
Franklin WTP
5200 Brookshire Boulevard
Charlotte
Mecklenburg County
to receiving waters designated as an unnamed tributary to Stewart Creek in the
Catawba River Basin in accordance with effluent limitations, monitoring
requirements, and other conditions set forth in Parts I, II, III and Iv hereof.
This permit shall become effective August 1, 2005.
This permit and authorization to discharge shall expire at midnight on May 31, 2010.
Signed this day June 30, 2005.
ORIGINAL SIGNED BY
SUSAN A. WILSON
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0084549
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facIty, 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 Charlotte -Mecklenburg Utility Department is hereby authorized to:
1. Continue to operate a water treatment plant with a discharge of filter -backwash
wastewater and supernatant from settling lagoons. This facility is located at the
Franklin WTP on Brookshire Boulevard near Charlotte in Mecklenburg County.
2. Discharge from said treatment works at the location specified on the attached
map into an unnamed tributary to Stewart Creek, classified C waters in the
Catawba River Basin.

Latitude: 35°16'40"(001) NCO084549 Facility -'
Longitude: 80'53'25"(001) Location --
Quad: Mountain Island Lake, N.C. CMUD
Stream Class: C Franklin WTP
Subbasin: 30834
Receiving Stream: UT Stewart Creek NaRrH SCALE 1:24000

A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (001)
During the period beginning on August 1, 2005 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
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flaw
Weekly
Instantaneous
Effluent
Total Suspended Residue
30.0 m L
45.0 m /L
21Month
Grab
Effluent
Settleable Solids
0.1 mVL
0.2 mVL
W ekly
Grab
Effluent
Turbidity
50 NTU
I Weekly
Grab
Effluent
Iron
I Weekly
Grab
Effluent
Total Residual Chlorines
17 Ng/L
I Weekly
Grab
Effluent
Aluminum
I Weeldy
I Grab
I Effluent
Footnotes:
1. This limit will become effective February 1, 2007. Until then, the Permittee shall monitor TRC [with no
effluent hmit].
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.
A. (I.) SECONDARY DISCHARGE MONITORING REQUIREMENTS [0021
During the period beginming on August 1, 2005 and lasting until expiration, the Permittee is authorized to
discharge from secondary discharge point 002. Such discharges shall be monitored by the Permittee as
specified below:
PARAMETER
MONITORING REQUIREMENTS
Measurement Frequency
Sample Type
Sample Location
Total Suspended Residue
Quarterly
Grab
Effluent
Settleable Solids
Quarterly
Grab
Effluent
Turbidity
Quarterly
Grab
Effluent
Iron
Quarterly
Grab
Effluent
Total Residual Chlorine
QuarterlyGrab
Effluent
AluminumI
Quarterly
Grab
Effluent

lis.4Yti w'1•.A'... .s$�'°Yb:h. n,��f. ar4vi.a,iy+..
•
CHARLOTTE,.
Mr. Charles H. Weaver, Jr.
NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBECT: Draft Permit Comments
NPDES Permit #NC0084549 Mecklenburg Co.
Dear Mr. Weaver,
J U N 3 2005 I JJJI
DENR - N,ITER OU,ILO
POINT SOURCE BRANCH
... May 26, 2005 . , ,....a.._....,:..,....t
Below are comments regarding our new draft permit and justifications for parameter
changes.
We would like for the state to reconsider the chlorine limits on our draft permit for outfall
001 based upon the following:
1) Recycle of clarified water
We recycle approximately 300 gpm of the clarifier water for our belt press operation.
The main concern is blinding of the press belt pores from the clarified water due to
algal growth. This in turn would send more solids back to the clarifier instead of
being processed as a cake and disposed.
2) Overflow weir algal growth
No chlorine residual increases algal growth on the weirs, this breaks off when
discharge rates are increased causing TSS spikes.
3) Reuse Program
We currently have a reclaimed water permit (W00021734). Chlorine residual is
needed to ensure that growth does not occur in our customers' tankers and to ensure
that we meet the parameters of the Reclaimed Water permit for BOD5, Fecal
Coliform, and NH3. Our current data shows that we meet all of the requirements. If
we eliminated the chlorine residual that is currently in the water would we be required
to start over collecting our data to ensure compliance?
CHARLOTTE-MECKLENBURG UTILITIES
Water Treatment Division 5200 Brookshire Boulevard
Charlotte, NC 28216
PH: 704/399-2426
FAX: [phone]

We were also wondering why the limit was set at 17ug/L. Currently the limit for our
North Mecklenburg Water Plant NPDES Permit # NC0084387 is 28ug/L. The permit
was issued in March of this year. It would be beneficial to our operation if the limits
were consistent at each facility.
In addition to the above we were permitted for a secondary stream on the property that
must be monitored quarterly. We are requesting that you review the data we now have
for the secondary stream and consider eliminating it on the new permit. The table below
shows the data since we started sampling this discharge in mg/L.
CL2 RES.
.
Fe.
Set. Solids
Average
.28
2.3
1.3
0.07
0.20
0.00
Maximum
1.83
E16
4.5
0.76
0.84
<0.10
Minimum
6.02
1 <1.0
<0.50
<0.10
<0.05
1 <0.10
The original design for this stream was approved by the state when the plant was under
design/construction for groundwater/storm-water run-off and emergency overflows. An
in-house review of the chlorine residual for this outfall shows that the chlorine residual is
a result of the discharges from the pump stations. We plan to re-route the drains from
these buildings to our clarifiers eliminating the chlorine residual completely in the
secondary stream. The rest of the stream make up is run-off and groundwater flow.
We invite you to come on site and review our plant processes so that you can fully
understand our concerns.
If you have any questions, please contact me at 704-399-2426 extension 222.
Since ly,
C�
John C. Huber
Superintendent, Water Supply& Treatment Division
Cc: Barry Gullet, CMU Deputy Director
Mike Parker, Regional Consultant Mooresville Office
Randy Hawkins, CMU Utilities Operations Manager
Steve Nation, Franklin Plant Alum Residuals ORC

North Carolina ) as
Mecklenburg County)
NCDENR/DWO/NPDES
CAROLYN BRYANT
1617 MAIL SERVICE CTR
RALEIGH NC 27699-1617
The Knight Publishing Co., Inc.
Charlotte, NC
Affidavit of Publication
THE CHARLOTTE OBSERVER
_______________________+________________
I
REFERENCE: 30045571
5434622 Heater Utilities
I
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 Knight Publishing Company a
corporation organized and doing business under thel
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. I
PUBLISHED ON:-05/14
AD SPACE: 190 LINE I I - I .
FILED ON: 05/17/05 1
NAME:��J.e-ate- C�,1 TITLE: �T' LW C� K
DATE:
In Testimony Whereof 1 have hereunto set my hand and affixed my seal, the
day and y r aforesaid. I
MY COMMiSSjOl EXPIMS May 27, 20%
Note i �mni Commission Expires: _/_/_

To: NPDES Unit
Water Quality Section
Attention: Carolyn Bryant
SOC PRIORITY PROJECT: No
Date: April 7, 2005
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Mecklenburg
NPDES Permit No.: NC0084549 ----
MRO No.: 04-109 r
PART I - GENERAL INFORMATION
1. Facility and address: Franklin Water Treatment Plant
Charlotte -Mecklenburg Utilities
5200 Brookshire Boulevard
Charlotte, NC 28216
01
3.
:1
Date of investigation: February 15, 2005
rA PA 1 2 2005 D
I
Report prepared by: Michael L. Parker, Environmental Engineer II
DENR -'�-�1 I
POINTS URCE BRANCH
Person contacted and telephone number: John Huber, [phone], ext. 222.
5. Directions to site: From the jct. of I-85 and Hwy. 16 in western Mecklenburg County,
travel north on Hwy. 16 = 1.4 miles to the Franklin Water Treatment Plant located on the
east (right) side of the road.
6. Discharge point(s), list for all discharge points: -
Latitude: 350 16' 40"
Longitude: 80' 53' 25"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: F15SW
7. Site size and expansion area consistent with application: Yes. There is area available for
expansion, if necessary.
8. Topography (relationship to flood plain included): The site is well removed from any
flood plain.
9. Location of nearest dwelling: Approx. 500+ feet from the W WTP site.

Page Two
10. Receiving stream or affected surface waters: U. T. To Stewart Creek
a. Classification: C
b. River Basin and Subbasin No.: Catawba 030834
C. Describe receiving stream features and pertinent downstream uses: The receiving
stream is = 3 feet wide and 3 - 4 inches deep at the discharge location. There are
no known downstream dischargers.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater: 2.241 MGD (Design Capacity)
b. What is the current permitted capacity: N/A
C. Actual treatment capacity of current facility (current design capacity): 2.241
MGD
d. Date(s) and construction activities allowed by previous ATCs issued in the
previous two years: There have been no ATCs issued to this facility in the past
two years (see Part IV).
e. Description of existing or substantially constructed WWT facilities: The existing
WWT facilities consist of two settling lagoons, two gravity residuals thickeners,
two backwash clarifiers, one residuals basin, and a belt filter press.
Dechlorination was proposed at one time, but the permittee chose not to install it.
f. Description of proposed WWT facilities: There are no proposed facilities at this
time.
g. Possible toxic impacts to surface waters: There have been no toxic impacts
documented in the effluent from this facility, however, past studies have shown
that WTP effluents may exhibit toxic characteristics.
h. Pretreatment Program (POTWs only): Not Needed.
2. Residual handling and utilization/disposal scheme:
a. If residuals are being land applied specify DWQ Permit No. WQ0000057.
Residuals Contractor: Synagro
b. Residuals stabilization: N/A
3. Treatment plant classification: Class I (no change from previous rating).
4. SIC Code(s): 4941 Wastewater Code(s): 21
5. MTU Code(s): 50003

Page Three
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? Public monies were used in the construction of this facility.
2. Special monitoring or limitations (including toxicity) requests: None at this time (see
Part IV).
3. Important SOC/JOC or Compliance Schedule dates: N/A
4. Alternative analysis evaluation
a. Spray Irrigation: Insufficient area.
b. Connect to regional sewer system: Insufficient capacity in existing lines.
C. Subsurface: Insufficient area
PART IV - EVALUATION AND RECOMMENDATIONS
The permittee (Charlotte -Mecklenburg Utilities) requests renewal of the subject permit
for the discharge of filter backwash and water from the cleaning of the residuals settling basins.
There have been no changes to the permit or the existing WWT facilities since the permit was
last issued.
At the last permit renewal, a second discharge of wastewater was identified by MRO
staff. After further investigation, this discharge was found to contain water from a number of
sources including, but (possibly) not limited to: stormwater, wet well water from in -plant pumps,
and underground seepage water from adjacent raw water reservoirs. Although the waste stream
appeared clear, with no trace of solids or color, analytical testing was required in the current
permit so that potential pollutants could be identified. A review of this analytical testing did not
indicate a particular pollutant of concern; however, it is recommended that some form of testing
continue, and a decision be made as to whether or not this discharge should be added to the
subject permit as outfall 002 (as recommended in the last SR from this Office). CMU indicated
that some measures have been taken to reduce the amount of raw water lagoon seepage into this
outfall; however, the seepage is expected to continue until a complete overhaul of the lagoons is
made.
Pending receipt and review of the draft permit, it is recommended that the permit be
reissued as requested.
Signature of Report Preparer Date
, /?�_ �I lot
Water Quality Re al Supervisor Date
h:Wsr\dsr05\fmnklin.wtp

•
CHARLOTTE,.,
Mr. Charles Weaver, Jr.
NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBECT: Alum Residuals Facilities
Franklin Water Treatment Plant
NPDES Permit No. NCO084549
Mecklenburg Co.
Dear Mr. Weaver,
October 13, 2004
0CT 2 1 2004 U
DENR - WATER QUALITY
POINT SOURCE BRk,NCH
In accordance with our NPDES permit we are requesting renewal 180 days prior to our
expiration date of May 31, 2005. The only significant change is the addition of a WTP
Reclaimed Wash Water Bulk Distribution Permit # WQ0021734 that was approved by
the Non -Discharge Compliance/Enforcement Unit on September 17, 2002.
Enclosed is our completed
❖ NPDES Permit Application, short form C WTP
❖ Narrative description of the sludge management plan for the facility
•A Site map showing our discharge point.
Note that we have two discharge points (Primary for the alum residuals process) and a
secondary discharge for a stream on site that go into the same tributary. The map shows
them going into the same discharge stream that eventually enters Stewart Creek.
If you have any questions please contact me at 704-399-2426 extension 222.
Sincerely,
c.
Jo4 C. Huber
Superintendent, Water Supply& Treatment Division
Water Treatment 5200 Brookshire Boulevard Charlotte, NC 28216 704/399-2426
Charlotte -Mecklenburg Utility Department

October 13, 2004
To: Charles Weaver, Jr.
NC DENR/ Water Quality/ NPDES Unit
From: Steve Nation
ORC, Alum Residuals Facilities, Franklin Water Treatment Plant, CMUD
The following is a narrative description of the sludge management plan of the Franklin Water
Treatment Plant Alum Residuals Facilities. It describes the flow of the generated water treatment
plant alum residuals and the water used to convey the residuals to the Alum Residuals Facilities.
The Franklin Water Treatment Plant Alum Residuals Facilities processes the accumulated water
treatment chemical precipitate {aluminum sulfate) from the Franklin and Vest Water Treatment
Plants for removal and clarifies the water associated with this precipitate for discharge. Franklin
Water Treatment Plant basin blowdowns and filter wash residuals are delivered directly by
gravity flow to the Alum Residuals Facilities surge control basins; Vest Water Treatment Plant
basin blowdowns and filter wash residuals are shipped via tanker truck from Vest to the Alum
Residuals Facilities residuals basin.
The Franklin Water Treatment Plant water and solids mixture is temporarily held in two surge
control basins to prevent large surge flows to the clarifiers. Surge control basins effluent water
flow is treated with a polymer solution as it flows to a pair of clarifiers. The solids that are present
floc together and readily settle in the clarifiers. The clarified water flows over the clarifiers' weirs
and is discharged to a tributary of Stewart Creek.
The solids that have settled in the clarifiers accumulate until they are returned to the residuals
basin. The unthickened residuals are temporarily held in the residuals basin until they are
transferred to a pair of thickeners. During the transfer, the residuals are treated with another dose
of polymer to aid in the settling of the solids in the thickeners. While the transfer is occurring, any
clear water that flows over the thickeners' weirs is returned to the surge control basins for
removal through the clarifiers.
The residuals solids settle in the thickeners. The thickened residuals are then pumped onto two 3-
meter filter belt presses. The solids are trued with a polymer prior to being dewatered on the
presses. The press filtrate flows to a sump pit where the filtrate is pumped to the surge control
basins for removal through the clarifiers. The solids are scraped off the presses and the press
cake falls onto a conveyor. The conveyor delivers the press cake to a waiting trailer. The trailer
hauls off the press cake solids to Irwin Wastewater Plant for storage. At this site the alum sludge
is mixed with bio-solids from the City of Charlotte's Wastewater Plants. The solids are then land
applied under the City's Class "B" land application permit # WQ0000057.
There is a secondary discharge under the same permit that is monitored quarterly. This stream is
not part of the alum residuals process.
Respectfully submitted,
Stephen E. Nation
Alum Residuals Facilities ORC