NC0081426_Permit Issuance_20010427

� -1
Mr. James L. Moorefield, Jr.
Water Supply Manager
P.O. Box 3136
Greensboro, North Carolina
Dear Mr. Moorefield:
Michael F. Easley
©� A Governor
NCDENR William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
27402-3136
Kerr T. Stevens, Director
Division of Water Quality
April 27, 2001
Subject: Issuance of NPDES Permit NCO081426
N.L. Mitchell WTP
Guilford County
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). The limits and requirements in this permit will take effect on July 1, 2001.
Please be aware that North Buffalo Creek is listed as an impaired stream on North Carolina's 303(d) list. This means that
the stream does not meet all water quality standards. The Division is working toward the improvement of water quality in North
Buffalo Creek. If the Division's current initiatives do not result in improved water quality, removal of discharges to North
Buffalo Creek may be necessary for the health of the stream. Although the Division believes larger discharges and urban runoff
are the primary causes of degradation to North Buffalo Creek, we will continue to monitor compliance at your facility. If
noncompliance with your permit's effluent limits is shown to be a direct cause of stream degradation, the Division will
recommend removal of your facility's discharge.
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
Kerr T. Stevens
cc: Central Files
Winston-Salem Regional Office/Water Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit
N. C. Division of Water Duality / NPDES Unit Phone: [phone]
1617 Mail Service Center, Raleigh, NC 27699.1617 fax: [phone]
Internet: h2o.enr.slate.nc.us DENR Customer Service Center. 1 800 623-7748

Permit NCO081426
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
City of Greensboro
is hereby authorized to discharge wastewater from a facility located at the
N.L. Mitchell WTP
1041 Battleground Avenue
Greensboro
Guilford County
to receiving waters designated as North Buffalo Creek in the Cape Fear 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 July 1, 2001.
This permit and authorization to discharge shall expire at midnight on June 30, 2006.
Signed this day April 27, 2001.
ORIGINAL SIGNED BY
SUSAN A. WILSON
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0081426
SUPPLEMENT TO PERMIT COVER SHEET
The City of Greensboro is hereby authorized to:
1. Continue to operate a water treatment plant with a discharge of filter -backwash
wastewater. This facility is located in Greensboro at the N.L. Mitchell WTP on
Battleground Avenue in Guilford County.
2. Discharge from said treatment works at the location specified on the attached
map into North Buffalo Creek, classified C-NSW waters in the Cape Fear River
Basin.

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Permit NC0081426
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge 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
Flow
Weekly
Instantaneous
Effluent
Total Suspended Residue
30.0 mg/L
45.0 mg/L
2/Month
Grab
Effluent
Settleable Solids
0.1 mVL
0.2 mVL
Weekly
Grab
Effluent
Turbidity2
Weekly
Grab
Upstream & Downstream
Iron
Weekly
Grab
Effluent
Total Residual Chlorine
Weekly
Grab
Effluent
Aluminum
Weekly
Grab
Effluent
Footnotes:
1. Upstream = at least 50 feet upstream from the outfall. Downstream = at least 50 feet downstream from the
outfall.
2. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50 NTU. If the
instream turbidity exceeds 50 NTU due to natural background conditions, the discharge cannot cause
turbidity to increase in the receiving stream.
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.

,
WATER
��
Resources
City of Greensboro moo
2� O O
3/30/01 = o
Administration
[phone]
Mr. Charles H. Weaver, Jr.
Fax [phone]
NC Division of Water Quality - r
NPDES Unit
1617 Mail Service Center
Customer Service
Raleigh, NC 27699-1617
[phone]
Fax [phone]
Dear Mr. Weaver:
The City of Greensboro Water Supply Division Staff has reviewed the NPDES Draft
Water Supply
Permit Number NC 0081426 for the N. L. Mitchell Water Treatment Plant. The Water Supply
Mitchell Plan[
[phone]
Division alongwith our department, is in full agreement on the water quality of North Buffalo
� y p s a Y
Fax [phone]
Creek. The entire management staff has reviewed the draft proposal number NC 0081426 and
understands all of the conditions set forth in the renewal.
Townsend Plant
Fax (36)375-0
Fax [phone]
On the subject of excessive) high amounts of total residual chlorine in the effluent
� y g
discharge, the management staff will work toward reducing these concentrations in our discharge
to the North Buffalo Creek. We will work toward this reduction in a timely manner and currently
have several plans of action. Our facility will keep your office informed on corrective action for
Water Reclamation
this problem.
North Buffalo Plant
[phone]
Fax [phone]
Respectfully submitted,
T.Z.Osborne Plant
p
[phone]-2240
Fax [phone]
James L. Moorefield, Jr.
Water Supply Manager
Construction &
Maintenance
JM/cc
Service Center
[phone] enclosure
Fax[phone]
Meter Services
[phone]
Fax [phone]
Water Conservatic
[phone]
Fax [phone]
P. O. Box 3136, Greensboro, NC 27402-3136 • www.ci.ereensboro.nc.us • TDD [phone]
1605

News & Record
North Carolina, Guilford County
Published by
News & Record, Inc.
Greensboro, North Carolina
Affidavit of Publication
Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified and authorized by law to administer oaths,
personally appeared Anna Gaither who being first duly swom, deposed and says:
3/8/01
I. That she is the Publishers Representative of the Greensboro News & Record, Inc. a corporation,engaged in the publication of newspapers
(mown as "News & Record", published, issued and entered as second class mail in the City of Greensboro in said County and State.
2. That she is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement, a copy of which is attached
hereto, was published in the News & Record on the above listed dates.
3. That the said newspaper (or newspapers) in which such notice, paper, document, or legal advertisement was published was, at the time of
each and every such publication, a newspaper meeting all of the requirements and qualifications of Section 1-597 of the General Statutes of
North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the C2eneral S tes of North Carolina.
Publisher's Representative
Fh /1n,�tC VALERIE iMiicNEIL
Sworn to and subscribed before me, this dayoC QS2001. NOTAW, PUBLIC
GUILFORD COUNTY, NC
\ I f)r oua Commission Expires 8-23,2005
Name
Notary Public
My commission expires: August 23, 2005
Ad# Date Edition Class PO
Ad Copy
NCDENR/DWQ/NPES 1117382 03/09/01 News & Record 400 PUBLIC NOTICE STATE

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WATER
Resources
..........
City of Greensboro
MITCHELL WATER TREATMENT
NPDES PERMIT # NCO081426
SLUDGE HANDLING AND DISPOSAL DESCRIPTION
❑ FACILITY DESCRIPTION
The permitted facility is a drinking water treatment plant that produces an
average of 12 MGD of potable water. The discharge permit is for discharge
of clarified filter backwash and process sampling water.
❑ PROCESS DESCRIPTION
Filter backwash and process sampling water (no sanitary wastewater) is
discharged periodically to the onsite clarification basin. As this process
water flows through the basin solids consisting primarily of aluminum
hydroxide sludge and filtered solids from the water treatment process
settle to the bottom and are removed through a bottom draw off valve.
Sludge from this draw off system is discharged to the sanitary sewer and
received for treatment at the city's wastewater treatment plants. There is
no onsite sludge treatment performed other than the thickening allowed by
collection in the clarification basin. Clarified water flows through one of
four floating decanter units, all of which contain tube settler media for
further reduction of solids content.
❑ SLUDGE HANDLING
As described above, all sludge produced in the facility is discharged
directly to the city's sanitary sewer system for treatment at the city's
wastewater plants. There is no additional onsite handling or treatment of
sludge. Biannually, the clarification basin is taken out of service for
inspection and cleaning. Wash down water used for this work is
discharged directly to the city's sanitary sewer system.

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
August 18, 2000
Mr. Allan Williams
City of Greensboro
P. O. Box 3136
Greensboro, NC 27402
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: NPDES Permit Modification
Permit NCO081426
N. L. Mitch WTP
Guilford County
Dear Mr. Williams:
The Division is beginning the cycle of permit renewals for the Cape Fear river basin. An examination of the Cape
Fear basin plan and the NPDES permit schedule has revealed that the existing expiration dates in Cape Fear NPDES
permits do not coincide with the revised permit expiration dates for the basin. This discrepancy could create unnecessary
delays in the processing of over 200 permit renewals. Accordingly, the Division is changing the permit expiration dates for
NPDES permits in the Cape Fear river basin.
This permit modification changes the expiration date of the subject permit in subbasin 30602 to June 30, 2001. Please
find enclosed the revised permit cover page. Insert the new cover page into your permit and discard the old page. All
other terms and conditions contained in the original permit remain unchanged and in full effect. This permit modification
is issued under the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement
between North Carolina and the U. S. Environmental Protection Agency.
In accordance with the modification of the permit expiration date, the new due date for your renewal application is
January 1, 2001. Renewal application forms will be sent to you approximately 6-8 weeks in advance of the new due date
or you may download the forms from the NPDES web site at http://h2o.enr.state.nc.us/NPDES/documents.html.
You will need to download Short form C. If you have already submitted a permit renewal form, there is no need to
submit any other forms to the Division; the application will be processed during the renewal period for your subbasin.
If any part of this permit 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 a written petition conforming
to Chapter 150B of the North Carolina General Statutes, 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.
If you have any questions concerning this permit modification, please contact Natalie Sierra at [phone],
extension 551.
Sincerely, �/j
/ Kerr T. Stevens
cc: Central Files
Winston-Salem Regional Office, Water Quality Section
Point Source Compliance Enforcement Unit
NODES Unit r
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Visit us ON THE INTERNET @ http:/lh2o.enr.state.nc.us/NPDES

- ' Permit NCO081426
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PF.PAATT
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,
City of Greensboro
is hereby authorized to discharge wastewater from a facility located at the
N.L. Mitchell WTP
1041 Battleground Avenue
Greensboro
Guilford County
to receiving waters designated as North Buffalo Creek in the Cape Fear 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 September 1, 2000.
This permit and authorization to discharge shall expire at midnight Qn June 30, 2001.
Signed this day August 18, 2000.
Kerr T. Stevens, l5irector
Division of Water Quality
By Authority of the Environmental Management Commission