NC0020648_authorization to construct_20030930

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Coleen H. Sullins, Deputy Director
Division of Water Quality
September 30,2003
The Honorable L. Stewart Rumley, Mayor
City of Washington
Post Office Box 1988
Washington, North Carolina 27889-1988
SUBJECT:
Dear Mayor Rumley:
Authorization to Construct No. 020648A01
City of Washington
Wastewater Treatment Plant Expansion, Phase IIA
Beaufort County
Project No. CS370521-04
A letter of request for Authorization to Construct was received May 28, 2003 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 modifications to the
existing 3.65 MGD City of Washington Wastewater Treatment Plant, with discharge of treated
wastewater into the Tar River in the Tar -Pamlico River Basin.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
(a) a 1.85 million gallon oxidation ditch with three selector tanks, to include six (6)
40 Hp brush/disk rotors with VFD drives, four (4) 5 Hp channel mixers, six (6) 2
Hp selector tank mixers, two (2) 5 Hp 3,650 gpm mixed liquor recirculation
pumps, and adjustable weirs,
(b) a return activated sludge pump station with dual 2,300 gpm, 20 Hp submersible
pumps with VFD drives,
(c) a new power zone/motor control center,
in addition to minor weir modifications to the existing flow-splitter box, and miscellaneous
piping, electrical and site work.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0020648 issued April 15, 2002, and shall be subject to revocation unless
the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0020648.
N. C. Division of Water Quality 1617 Mail Service Center
Raleigh, NC 27699-1617 [phone]
..
Customer Service
1 800 623-7748

The Honorable L. Stewart Rumley, Mayor
Page 2
September 30, 2003
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.
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 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 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.
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.

The Honorable L. Stewart Rumley, Mayor
Page 3
September 30, 2003
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.
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].
Sincerely,
W. Klimek, P.E.
KP:nw
cc: Rivers & Associates (Greenville Office, Attn: Blaine Humphrey, P.E.)
Beaufort County Health Department
Washington Regional Office, Water Quality Section
Technical Assistance and Certification Unit
a e Goodrich, NPDES Permitting Unit
Daniel Blaisdell, P.E.
Cecil G. Madden, Jr., P.E.
Ken Pohlig, P.E.
SRF