NC0024325_Authorization to Construct_20070923

NPDES DOCUMENT SCANNING COVER SHEET
NC0024325
North Buffalo Creek WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
s
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Staff Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
September 23, 2007
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City of Greensboro
A to C No. 024325A01
Issued October 6, 2005
JAN 1 8 2008
Engineer's Certification
I, 57Ld h e , as a duly registered Professional Engineer in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time)
the construction of the modifications and improvements to the North Buffalo WWTP, located on
2199 White Street and T. Z. Osborne WWTP located on Huffline Mill Road west of
McLeansville in Guilford County for the City of Greensboro, hereby state that, to the best of my
abilities, due care and diligence was used in the observation of the following construction:
Three new fine mechanical screens with compactors; one pump station consisting
of five 500 horsepower pumps to pump to T.Z. Osborne WRF and two 150
horsepower pumps to pump to North Buffalo WRF; approximately 18,800 linear
feet of 54-inch, 5,300 linear feet of 48-inch transfer force main; 83 linear feet of
96" tunnel; and approximately 293 linear feet of 60-inch gravity interceptor for a
future connection, in conformity with the project plan, specifications, and other
supporting data subsequently filed and approved by the Department of
Environment and Natural Resources.
I certify that the construction of the above referenced project was observed to be built within
substantial compliance and intent of the approved plans and specifications.
Signature
Date 77Z3/07
Send to:
Registration No. /8/ 7 8
Construction Grants & Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633

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October 6, 2005
Mr. Kevin Eason, P.E., Engineering Manager
City of Greensboro
2602 S. Elm Street
Greensboro, North Carolina 27406
Dear Mr. Eason:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
SUBJECT: Authorization to Construct
A to C No. 024325A01
City of Greensboro
North Buffalo WRF
Guilford County
A letter of request for Authorization to Construct was received on June 24, 2005, by the
Division, and final plans and specifications for the subject project have been reviewed and found
to be satisfactory. Authorization is hereby granted for the construction of a new pump station to
serve both North Buffalo WRF, and T. Z. Osborne WRF with a transfer force main.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
Three new fine mechanical screens with compactors; one pump station consisting
of five 500 horsepower pumps to pump to T.Z. Osborne WRF and two 150
horsepower pumps to pump to North Buffalo WRF; approximately 18,800 linear
feet of 54-inch, 5,300 linear feet of 48-inch transfer force main; 83 linear feet of
96" tunnel; and approximately 293 linear feet of 60-inch gravity interceptor for a
future connection, in conformity with the project plan, specifications, and other
supporting data subsequently filed and approved by the Department of
Environment and Natural Resources.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0024325 and NPDES Permit No. NC0047384 both issued April 1, 2004,
and shall be subject to revocation unless the wastewater treatment facilities are constructed in
accordance with the conditions and limitations specified in Permit Nos. NC0024325 and
NC0047384.
The sludge generated from these treatment facilities must be disposed of in accordance
with G.S. 143-215.1 and in a manner approved by the North Carolina Division of Water Quality.
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617
Internet: h2o.enr.state.nc.us 512 N. Salisbury St. Raleigh, NC 27604
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Mr. Kevin Eason, P.E., Engineering Manager
October 6, 2005
Page 2
In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those as may
be required by this Division, such as the construction of additional or replacement wastewater
treatment or disposal facilities.
The Winston-Salem Regional Office, telephone number [phone], shall be
notified at least forty-eight (48) hours in advance of operation of the installed facilities so that an
on site inspection can be made. Such notification to the regional supervisor shall be made during
the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding
State Holidays.
Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted facility
has been installed in accordance with the NPDES Permit, this Authorization to Construct and the
approved plans and specifications. Mail the Certification to Cecil G. Madden, Jr., P.E.,
Construction Grants & Loans, DWQ / DENR, 1633 Mail Service Center, Raleigh, NC 27699-
1633.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade at
least equivalent to or greater than the classification assigned to the wastewater treatment
facilities by the Certification Commission.
The Permittee must also employ a certified back-up operator of the appropriate type and
grade to comply with the conditions of T15A:8G.0202. The ORC of the facility must visit each
Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding
weekends and holidays, must properly manage the facility, must document daily operation and
maintenance of the facility, and must comply with all other conditions of T15A:8G.0202.
The wastewater transfer facilities shall be properly maintained and operated at all times.
The Permittee shall maintain compliance with an individual system -wide collection system
permit for the operation and maintenance of these facilities as required by 15A NCAC 2H .0227.
If an individual permit is not required, the following performance criteria shall be met as
provided in 15A NCAC 2H .0227:
a. The sewer system shall be effectively maintained and operated at all times to prevent
discharge to land or surface waters, and any contravention of the groundwater
standards in 15A NCAC 2L .0200 or the surface water standards in 15A NCAC 2B
.0200.
b. A map of the sewer system shall be developed and shall be actively maintained.
c. An operation and maintenance plan shall be developed and implemented.
d. Pump stations that are not connected to a telemetry system shall be inspected every
day (i.e. 365 days a year). Pump stations that are connected to a telemetry system
shall be inspected at least once per week.

Mr. Kevin Eason, P.E., Engineering Manager
October 6, 2005
Page 3
e. High -priority sewer lines shall be inspected at least once per every six-month period
of time.
f. A general observation of the entire sewer system shall be conducted at least once per
year.
g. Inspection and maintenance records shall be maintained for a period of at least three
years.
h. Overflows and bypasses shall be reported to the appropriate Division regional office
in accordance with 15A NCAC 2B .0506(a), and public notice shall be provided as
required by North Carolina General Statute 143-215.1 C.
Construction of the pump station and force main shall be scheduled so as not to interrupt
service by the existing utilities nor result in an overflow or bypass discharge of wastewater to the
surface waters of the State.
The Permittee shall verbally report to a Division of Water Quality staff person
at the Winston-Salem Regional Office, telephone number [phone], as soon as possible,
but in no case more than 24 hours or on the next working day, following the occurrence or first
knowledge of the occurrence of either of the following:
a. Any process unit failure, due to known or unknown reasons, that renders the facility
incapable of adequate wastewater transport, such as mechanical or electrical failures
of pumps, line blockage or breakage, etc.; or
b. Any failure of a pumping station or sewer line resulting in a by-pass directly to
receiving waters without treatment of all or any portion of the influent to such station
or facility.
Voice mail messages or faxed information is permissible but shall not be considered as the initial
verbal report. Overflows and spills occurring outside normal business hours may also be reported
to the Division of Emergency Management at telephone number [phone] or (919) 733-
3300. Persons reporting any of the above occurrences shall file a spill report by completing Part I
of Form CS-SSO (or the most current Division approved form), within five days following first
knowledge of the occurrence. This report shall outline the actions taken or proposed to ensure
that the problem does not recur. Part II of Form CS-SSO (or the most current Division approved
form) can also be completed to show that the SSO was beyond control.
A copy of the approved plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
During the construction of the proposed additions/modifications, the permittee shall
continue to properly maintain and operate the existing wastewater treatment facilities at all times,
and in such a manner, as necessary to comply with the effluent limits specified in the NPDES
Permit.
You are reminded that it is mandatory for the project to be constructed in accordance
with the North Carolina Sedimentation Pollution Control Act, and, when applicable, the North

Mr. Kevin Eason, P.E., Engineering Manager
October 6, 2005
Page 4
Carolina Dam Safety Act. In addition, the specifications must clearly state what the contractor's
responsibilities shall be in complying with these Acts.
Failure to abide by the requirements contained in this Authorization to Construct may
subject the Permittee to an enforcement action by the Division of Water Quality in accordance
with North Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from
complying with any and all statutes, rules, regulations, or ordinances which may be imposed by
other government agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have
any questions or need additional information, please contact Cecil G. Madden, Jr., P.E. at
telephone number [phone].
Sincerel
Alan W. Klimek, P.
ID:cgm
Attachment to all
cc: Alan Stone, P.E., Hazen and Sawyer, P. C., Raleigh
Guilford County Health Department
DWQ Winston-Salem Regional Office, Surface Water Protection
Technical Assistance and Certification Unit
Daniel Blaisdell, P.E.
Point Source Branch, NPDES Program
Cecil G. Madden, Jr., P.E.
Ishwar Devkota, P.E.
A to C File