NC0084549_Permit Issuance_19960722

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 22,1996
Mr. John C. Huber
Water Treatment Superintendent
Franklin Water Treatment Plant
5200 Brookshire Blvd.
Charlotte, North Carolina 28216
Dear Mr. Huber.
[DilFEE HNF1
Subject: NPDES Permit Issuance
Permit No. NC0084549
Franklin Water Treatment Plant
Mecklenburg County
In accordance with the application for a discharge permit received on March 7, 1996, the Division is
forwarding herewith the subject NPDES 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 US
Environmental Protection Agency dated December 6,1983.
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, Post Office Drawer
27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and
binding.
Please take notice this permit is not transferable. Part II, EA. addresses the requirements to be followed
in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of land Resources, 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 Mary Cabe at telephone number (919) 733-
5083, extension 518.
Sincerely,
Original Signed By
David A. Goodric
A. Preston Howard, Jr., P.E.
cc: Central Files
Mooresville Regional Office
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Technical Assistance & Certification Group
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50 / recycled / 10 / post -consumer paper

Permit No. NCO084549
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
TO DISCHARGE WASTEWATER UNDER THE
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,
Charlotte -Mecklenburg Utility Department
is hereby authorized to discharge wastewater from a facility located at
Franklin Water Treatment Plant
Highway 16
Charlotte
Mecklenburg County
to receiving waters designated as an unnamed tributary to Stewart Creek in the Catawba River Basin
in accordance with the discharge limitations, monitoring requirements, and other conditions set forth in
Parts I, H, III, and IV hereof.
This permit shall become effective September 1, 1996.
This permit and the authorization to discharge shall expire at midnight on August 31, 2001.
Signed this day July 22, 1996.
Original Signed By
David AGoodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NC0084549
SUPPLEMENT TO PERMIT COVER SHEET
Charlotte -Mecklenburg Utility Department
Franklin Water Treatment Plant
is hereby authorized to:
1. Operate a wastewater treatment system for filter backwash consisting of two settling lagoons,
a residuals basin, two residuals thickeners, two backwash water clarifiers, and a belt filter
press from a facility located on Highway 16, north of Charlotte, North Carolina in
Mecklenburg County, and ,
2. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to Stewart Creek which is classified C waters in the Catawba River Basin.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0084549
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
Total Suspended Solids
Settleable Solids
Turbidity 2
Aluminum 3
Iron
Total Residual Chlorine
pH 4
Discharge Limit@tion j
Monthly. Avg. Daily Max.
30.0 mg/l 45.0 mg/I
0.1 mill 0.2 ml/l
Monitoring
Requirements
Measurement
Sample
Sample
Frequency
Type
Location 1
Weekly
Estimate
E
2/Month
Grab
E
Weekly
Grab
E
Weekly
Grab
U,D
Weekly
Grab
E
Weekly
Grab
E
Weekly
Grab
E
Weekly
Grab
E
i Sample Locations: E - Effluent, U- Upstream 50 feet from discharge, D - Downstream 50 feet from discharge
2 The discharge shall not cause turbidity of the receiving water to exceed 50 NTU. If the turbidity exceeds these levels due to natural background
conditions, the discharge level cannot cause any increase in the receiving water.
3 Aluminum monitoring is required only if alum is used as part of the treatment process.
4 The pH shall not.be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly by grab sample at the effluent.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
All samples should be from a representative discharge.

Part III
E. Toxicity Reopener
Permit No. NC0084549
This permit shall be modified, or revoked and reissued to incorporate toxicity limitations and
monitoring requirements in the event toxicity testing or other studies conducted on the effluent or
receiving stream indicate that detrimental effects may be expected in the receiving stream as a result
of this discharge.
F. EA/FONSI
All work shall be done in accordance with the mitigative measures outlined in the Environmental
Assessment and Finding of No Significant Impact for the Charlotte -Mecklenburg Utility
Department - Alum Residuals Management facilities at the Franklin Water Treatment Plant.

-b Z
Staff Review and Evaluation
NPDES Wastewater Permit
Iy114Ia tVa"Z14Ci77LYA F.Vici7.
Facility CMUD / Franklin WTP
NPDES No. NC0084549
Design Flow (MGD) 2.241 (max)
Facility Class I
STREAM CHARACTERISTICS
Stream Name
Stream Class
Sub -basin
Drainage Area (miz)
S7Q10 (cfs)
W7Q10 (cfs)
3002 (cfs)
IWC (%)
UT to Stewart Creek
C
03-08-34
100%
Proposed Changes
Parameters Affected
Basis for change(s)
0
Compliance Schedule:
Special Condition(s): Toxicity reopener and EA/FONSI staying in permit.
Permits & Engineering Comments:
Changed supplement to cover page on permit to reflect construction complete. Facility
has just started discharging © 3/18/96.
Recommend renewal of NPDES permit.
Prepared by:
Regional Office Evaluation and Recommendations:
GL�ar�Gtelt� �ivlr?�es.—�
/04/o

PERMIT NOTES
NC0084549 CMUD Franklin WTP
3/8 Sent Ack letter, permit will be streamlined per Mike Parker, RO.
SR from Samar 11/17/94
States that ATC was issued 5/13/94. He will send a copy for our files.
Class I facility NMC: 50003 Land application of sludge
Updated WATQ text. Application states 750,000 gpd.
2.241 MGD = ultimate design capacity, 0.75 MGD = daily avg.
3/14 Talked with John Huber of facility. They are ready to discharge and he will contact RO
today. He states that he doesn't have a copy of his ATC, but that it may be with his
engineering staff.
3/15 Drafted permit -changed sup to cover pug:; tM. reflect construction, no change to eff pabeC
4/16 Gave permit to Sue Robson for Streamline package.
Public Notice 6/5/96 Schedule to Issue 7/22/96

-M an CA 0,
vmcat-QG�
SOC PRIORITY PROJECT:
If Yes, SOC No._
Yes —No x
To: Permits and Engineering Unit
Water Quality Section
Attention: Mary Cabe
Date: September 22, 1997
NPDES STAFF REPORT AND RECOMMENDATION
County: Mecklenburg
Permit No. NC0084549
PART I - GENERAL INFORMATION
1. Facility and Address: Franklin Water Treatment Plant
Charlotte Mecklenburg Utility Dept.
5100 Brookshire Blvd.
Charlotte, N.C. 28216
2. Date of Investigation: September 17, 1997
3. Report Prepared By: Samar Bou-Ghazale, Environmental Eng. I
4. Persons Contacted and Telephone Number: Mr. Rick Carrier;
Engineer with Camp, Dresser & McKee; tel# [phone]
5. Directions to Site: From the intersection of I-85 and Hwy 16
in western Mecklenburg County, travel north on Hwy 16
approximately 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: 35016'40" Longitude: 80053'25"
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map.
U.S.G.S. Quad No.: F 15 SW U.S.G.S. Name: Mountain Island
Lake, N.C.
7. Site size and expansion are consistent with application?
Yes x No_ If No, explain:
8. Topography (relationship to flood plain included): Flat
slopes; the WTP facilities are not located within the 100-year

flood plain.
9. Location of nearest dwelling: None within 500 feet.
10. Receiving stream or affected surface waters: Unnamed
tributary 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 was approximately
three(3)feet wide and two(2) to three(3) inches deep at
the time of investigation. There are no known users
downstream.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 2.241 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? N/A
C. Actual treatment capacity of the current facility
(current design capacity)? 2.241 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: N/A
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The
existing wastewater treatment facilities consist of two
settling lagoons, one residuals gravity thickener, one
backwash clarifier, and a belt filter press.
f. Please provide a description of proposed wastewater
treatment facilities: The proposed wastewater treatment
will consist of an additional residuals sedimentation
basin, an additional gravity thickener, and an additional
backwash clarifier.
g. Possible toxic impacts to surface waters: None at this
time.
h. Pretreatment Program (POTWs only): N/A
2. Residuals handling and utilization/disposal scheme: Residuals
will be transported to the Irwin Creek WWTP.
Page 2

a. Other disposal/utilization scheme (specify): N/A
3. Treatment plant classification (attach completed rating
sheet) : Class I
4. SIC Code (s) : 4941
Wastewater Code(s) of actual wastewater, not particular
facilities, i.e., non -contact cooling water discharge from a
metal plating company would be 14, not 56.
Primary: 21 Secondary:
Main Treatment Unit Code: 50003
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
N/A
2. Special monitoring or limitations (including toxicity)
requests: None at this time.
3. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated.
Spray Irrigation: N/A
Connection to Regional Sewer System: According to the
environmental assessment report submitted to this office by
Black and Veatch in 1994, it was concluded that discharge to
the sanitary sewer would cost $4,108,000 compared to $236,000
for surface discharge. Both figures were calculated using 20
year present worth.
Subsurface: N/A
Other Disposal Options: N/A
5. Air Quality and/or Groundwater concerns or hazardous materials
utilized at this facility that may impact water quality, air
quality, or groundwater: No AQ or hazardous material
concerns.
6. Other Special Items: N/A
Page 3

1
0
PART IV - EVALUATION AND RECOMMENDATIONS
The Charlotte Mecklenburg Utility Department, is applying for
an NPDES Permit to discharge wastewater from backwash clarifiers
located at the Franklin Water Treatment Plant in Mecklenburg
County. The wastewater is generated from the daily backwashing of
filters and cleaning of the residuals settling basin.
It should be noted that the dechlorination contact tank has
not been constructed as proposed by Black and Veatch in 1994.
Therefore, the dechlorination contact tank should be deleted from
the permit until a chlorine limit is prescribed.
It is recommended the subject permit be issued.
Signature of Repolrt P eparer
Water Quality
?/? --%'/s
Date
ional Supervisor
Page 4
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