NC0023876_Authorization to Construct_20110728

Argil
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
July 28, 2011
Mr. Bob Patterson, P.E.
City of Burlington
P.O. Box 1358
Burlington, North Carolina 27216
SUBJECT: Authorization to Construct
A to C No. 023876A02
City of Burlington
South Burlington Wastewater Treatment Plant
Nutrient Removal Improvements
Alamance County
Dear Mr. Patterson:
A letter of request for an Authorization to Construct was received June 14, 2011, by the
Division of Water Quality (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 modifications to the existing 12.0 MGD. South Burlington Wastewater Treatment
Plant, with discharge of treated wastewater into Big Alamance Creek in the Cape Fear River
Basin.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
Improvements to the South Burlington Wastewater Treatment Plant, to include
replacement of the influent pump station pumps with four (4) 8 MGD submersible
pumps and one (1) 3.0 MGD suction -lift pump (and an existing 3.0 MGD suction -lift
pump), and influent flow meter replacement; equalization basin improvements to
include replacement of 4 (of the total 5) existing floating aerators with four (4) 20 Hp
floating mixers, installation of electrically -operated flow controls; improvements to the
aeration -basin distribution piping, including installation of a primary effluent
distribution box, RAS distribution box, and an aeration -basin (mixed liquor)
distribution box with dual 2 Hp submersible mixers; BNR improvements to existing
1617 Mail Service Center, Raleigh, North Carolinat27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] \ Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal opportunity t Affirmative Action Employer
NorthCarolina

Mr. Bob Patterson, P.E.
July 28, 2011.
Page 2
Aeration Basin 1, to create dual 0.326 MG each anoxic/oxic swing Zones 1, dual 0.327
MG oxic Zones 2, and dual 1:302 MG oxic Zones 3, including a new fine bubble
diffused system and four (4) 7,000 gpm NRCY window pumps and four (4) 5 Hp
submersible mixers; BNR improvements to existing Aeration Basin 2, to create dual
0.225 MG each anoxic/oxic swing Zones 1, dual 0.233 MG oxic Zones 2, and dual
0.460 MG oxic Zones 3, including a new fine bubble diffused system and four (4)
7,000 gpm NRCY window pumps and four (4) 3 Hp submersible mixers; refurbishment
of the existing six (6) blowers to provide 2,235 scfm capacity each, and associated air
header piping; alum metering system; improvements to the secondary clarifier splitter
box and improvements to the clarifier influent distribution piping; supplemental carbon
(glycerin) storage and feed system; a 2,000 kW emergency backup generator; and yard
piping and appurtenances, electrical controls, instrumentation, and site work; in
conformity with the project plans, 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. NC0023876 issued September 15, 2006, and shall be subject to revocation
unless the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0023876.
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 Division.
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 the 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: Construction Grants & Loans,
DWQ/DENR, 1633 Mail Service Center, Raleigh, NC 27699-1633.

Mr. Bob Patterson, P.E.
July 28, 2011
Page 3
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatmentplant 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.
A copy of the approved plans and specifications shall be maintained on file by the
Peiuiittee 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
Carolina Dam Safety Act. In addition, the specifications must clearly state what the contractor's
responsibilities shall be in complying with these Acts.
Prior to entering into any contract(s) for construction, the recipient must have obtained all
applicable permits from the State.
Failure to abide by the requirements contained in this. Authorization to Construct may
subject the Permittee to an enforcement action by the Division 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.

Mr. Bob Patterson, P.E.
July 28, 2011
Page 4
One (1) set of approved plans and specifications is being forwarded to you. If you have
any questions or need additional information, please contact Seth Robertson, P.E. at telephone
number [phone].
Sincerely,
oz5'
Coleen H. Sullins
kp:sr
cc: David Nailor, P.E., Hazen and Sawyer, 4011 WestChase Blvd, Raleigh, NC 27607
Alamance County Health Department
DWQ Winston-Salem Regional Office, Surface Water Protection
DWQ, Technical Assistance and Certification Unit
DWQ, Point Source Branch, NPDES Program
Ken Pohlig, P.E.
ATC File

City of Burlington
South Burlington Wastewater Treatment Plant
Nutrient Removal Improvements
A To C No. 023876A02
Issued July 28, 2011
Engineer's Certification
I, , 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 South Burlington WWTP, located
on Boy Wood Road in Graham, Alamance County for the City of Burlington, hereby state that,
to the best of my abilities, due care and diligence was used in the observation of the following
construction:
Improvements to the South Burlington Wastewater Treatment Plant, to include replacement of
the influent pump station pumps with four (4) 8 MGD submersible pumps and one (1) 3.0 MGD
suction -lift pump (and an existing 3.0 MGD suction -lift pump), and influent flow meter
replacement; equalization basin improvements to include replacement of 4 (of the total 5)
existing floating aerators with four (4) 20 Hp floating mixers, installation of electrically -
operated flow controls; improvements to the aeration -basin distribution piping, including
installation of a primary effluent distribution box, RAS distribution box, and an aeration -basin
(mixed liquor) distribution box with dual 2 Hp submersible mixers; BNR improvements to
existing Aeration Basin 1, to create dual 0.326 MG each anoxic/oxic swing Zones 1, dua1 0.327
MG oxic Zones 2, and dual 1.302 MG oxic Zones 3, including a new fine bubble diffused
system and four (4) 7,000 gpm NRCY window pumps and four (4) 5 Hp submersible mixers;
BNR improvements to existing Aeration Basin 2, to create dual 0.225 MG each anoxic/oxic
swing Zones 1, dual 0.233 MG oxic Zones 2, and dual 0.460 MG oxic Zones 3, including a
new fine bubble diffused system and four (4) 7,000 gpm NRCY window pumps and four (4) 3
Hp submersible mixers; refurbishment of the existing six (6) blowers to provide 2,235 scfm
capacity each, and associated air header piping; alum metering system; improvements to the
secondary clarifier splitter box and improvements to the clarifier influent distribution piping;
supplemental carbon (glycerin) storage and feed system; a 2,000 kW emergency backup
generator; and yard piping and appurtenances, electrical controls, instrumentation, and site
work; in conformity with the project plans, 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
Registration No.
Mail this Certification to: Attn: Ken Pohlig, P.E.
Construction Grants & Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633