NC0026611_Authorization to Construct_20060920 (2)

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• �(�1`C,a,,,.„.,,�/�a Michael F.Easley,Governor
William G.Ross Jr.,Secretary
U3 1— North Carolina Department of Environment and Natural Resources
( f r Alan W.Klimek,P.E.Director
m Division of Water Quality
September 20, 2006
R. Randy Martin, City Manager
Town of Morehead City
706 Arendell Street
Morehead City, North Carolina 28557
SUBJECT: Authorization to Construct
A to C No. 026611 AO
Town of Morehead City
Morehead City WWTP Expansion
Carteret County
Project No. CS370567-02
Dear Mr. Martin:
A letter of request for Authorization to Construct was received on March 2, 2006, 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 1.7 MGD Morehead City Wastewater Treatment Plant, with discharge of treated
wastewater into the Calico River in the White Oak River Basin.
This authorization results in an increase in design and permitted capacity to 2.5 MGD,
and is awarded for the construction of the following specific modifications:
Upgrade of the existing Pump Station No. 10 with two 1,850 gpm variable speed pumps,
a 10,000 gallon capacity wet well, standby power generation, and replacement of the
existing 10-inch DIP force main with a 12-inch DIP force main. The existing WWTP
will be replaced with a 2.5 MGD wastewater treatment facility with the capability of
producing reuse quality effluent and consisting of installation of the following: a new
headworks consisting of an influent flow meter and an aerated grit removal structure;
dual oxidation ditches:with a total volume of approximately 3,125,000 gallons including
two (2) 210,000 gallon anoxic reactors, rotors, mixers, and mixed liquor recycle pumps;
two (2) 70-ft secondary clarifiers; two (2) 12.5-ft by 48-ft tertiary traveling bridge filters;
dual channel liquid chlorination/dechlorination/post-aeration system; an upgraded sludge
management system consisting of two (2) existing 45-ft diameter sludge digestors with
new dual sludge return pumps, sludge wasting pump, and standby power; sludge
treatment facilities to treat Class A sludge consisting of a sludge dewatering system with
a belt press and polymer feed system, and sludge drying facility or a lime sludge
stabilization/pasteurization system; and including all associated blowers, motors, meters,
electrical service, controls, site work including piping, valving, and other appurtenances,
NaahCaroh
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North Carolina Division of Water Quality 1617 Mail Service Center Raleigh,NC 27699-1617 Phone[phone] Customer Service
Internet: __ 512 N.Salishary St. - Raleigh,NC 27604 FAX [phone] 1-877-623-6748
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An Equal Opportunity/Affirmative Action Employer-50%Recycled/l0%Post Consumer Paper

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Town of Morehead City r
September 20, 2006
Page 2
pursuant to the application received on March 2, 2006, and 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. NC0026611 issued June 27, 2005, and shall be subject to revocation unless
the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0026611.
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 Wilmington Regional Office, telephone number(910) 796-7215, 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 wastewmer treatment facilities at all times,

Town of Morehead City
September 20, 2006
Page 3
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 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(919) 715-6203.
Sincerely,
Ian W. Klimek, P.E.1;
J.
BSR:cgm
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cc: Tyndall Lewis, P.E., McDavid Associates, Inc.
Carteret County Health Department
DWQ Wilmington 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.
Seth Robertson, P.E.
SRF