NC0048861_authorization to construct_20100326

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
March 26, 2010
The Honorable H.I. White, Mayor
Town of Creswell
P.O. Box 68
Creswell, North Carolina 27928
SUBJECT: Authorization to Construct
A to C No. 048861A01
Town of Creswell
Town of Creswell WWTP
Washington County
Dear Mayor White:
A letter of request for an Authorization to Construct was received October 9, 2009, 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 0.064 MGD Wastewater Treatment Plant, with
discharge of treated wastewater into the Scuppernong River in the Pasquotank River Basin.
This authorization results in an increase in design and permitted capacity to 0.20 MGD,
and is awarded for the construction of the following specific modifications:
Replacement of the existing lagoon with a new MBR system consisting of: an influent
flow splitter box structure; influent pump station with two (2) 350 gpm non -clog
centrifugal influent pumps; a vortex grit classifier; two (2) 350 gpm mechanical drum
filter screens; one (1) 60 ft3 screenings compactor; one (1) 26,500 gallon anaerobic
selector tank with two 2.3 hp submersibile mixers; two (2) 46,500 gallon anoxic
basins with two (2) 2.3 hp submersibile mixers; two (2) 42,000 gallon aerobic basins;
two (2) 19,000 gallon anoxic basins with three (3) 280 gpm recycle pumps; two (2)
35,000 gallon membrane bioreactor basins containing a total of 12 membrane units;
three (3) 208 gpm RAS pumps; three (3) 150 gpm WAS pumps; three (3) 630 scfm
MBR system blowers; three (3) 245 scfm pre -aeration process blowers; three (3) 225
scfm sludge stabilization blowers; one (1) 500 gpm non -clog centrifugal sludge
loading pump; two (2) bank single channel UV system capable of treating a peak flow
of 0.50 mgd; cascade aeration; two (2) 350 gpm non -clog centrifugal effluent pumps;
administration and control building; and associated yard piping, electrical work and
control systems, in conformity with the project plans, specifications, and other
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
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 1 Affirmative Action Employer
NorthCarolina
aura*

The Honorable H.I. White, Mayor
March 26, 2010
Page 2
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. NC0048861 issued August 1, 2009, and shall be subject to revocation unless
the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0048861.
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 Washington 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.
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.
A copy of the approved plans and specifications shall be maintained on file by the
Permittee for the life of the facility.

The Honorable H.I. White, Mayor
March 26, 2010
Page 3
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.
Lagoons #2 and #3 shall be closed in a manner approved by the Division of Water
Quality that will meet water quality standards for surface water protection and aquifer protection.
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,
Coleen H. Sullins
swc:sr
cc: Charles W. Davis, P.E. — The Wooten Company, 120 Boylan Avenue,
Raleigh, NC 27603
Washington County Health Department
Washington Regional Office, Surface Water Protection
Technical Assistance and Certification Unit
Point Source Branch, NPDES Program
Steve Coffey, P.E.
ATC File 048861A01