NC0023965_Authorization to Construct_20080707

NPDES DOCYNENT SCANNING COVER SHEET
NPDES Permit:
NC0023965
Wilmington Northside WWTP
Document Type:
Permit Issuance
Wasteload Allocation
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(Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
July 7, 2008
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City of Wilmington
A To 0 No. 023965A02
Issued June 30, 2008
Engineer's Certification
RECEWEO
1) 3
_ 'L• .e•
I, t•W 1►.. c ttJ , 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 James A. Loughlin Northside
WWTP, located on North 23rd Street in New Hanover County for the City of Wilmington, hereby
state that, to the best of my abilities, due care and diligence was used in the observation of the
following construction:
uktOst,
• Addition of new screening and grit removal facilities
• Addition of four aeration tanks (1.55 MG each) with fine bubble diffusers (four
blowers at 5,000 cfm),
• Addition of four deep bed filters (10 ft. by 70 ft. each),
• Addition of two backwash tanks and two backwash reclaim tanks (and associated
pumps), two air scour blowers, with diversion of backwash to head of plant,
• Addition of UV disinfection (four channels, 360 lamps) and associated equipment
designed for 40 MGD peak flow,
• Addition of effluent parshall flume,
• Addition of post aeration (aeration diffusers in effluent sampling area, as well as
backwash tank area),
• Addition of effluent sampling area,
• Addition of equal split piping to the existing effluent pump station and the new
effluent pump station,
• Addition of new effluent pump station with 3 effluent pumps rated at 10 MGD each,
• Addition of 2 new anaerobic digesters (appx. 65 ft. diameter) with heat exchangers,
sludge transfer pumps, refurbishment of 3 existing anaerobic digesters,
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.
We understand that the new limits associated with the modifications to expand to 10 MGD now
apply.
Signature
Date - 1 - t% g
Send to:
Registration No. 0 Z 5 51 Z
Construction Grants & Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633

O V I AT It?Q Michael F. Easley, Governor
(� William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
--j Coleen H. Sullins, Director
`C Division of Water Quality
Mr. Sterling B. Cheatham
City Manager
City of Wilmington
2311 North Third Street
Wilmington, North Carolina 28401
Dear Mr. Cheatham:
June 30, 2008
SUBJECT: Authorization to Operate
A to 0 No. 023965A02
City of Wilmington
James A. Loughlin Northside WWTP
New Hanover County
A letter of request for Authorization to Operate was received March 3, 2008, 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 operation of modifications to the
existing 8 MGD Wastewater Treatment Plant, with discharge of treated wastewater into the Cape
Fear River in the Cape Fear River Basin.
This authorization results in an increase in design and permitted capacity to 10 MGD, and
is awarded for the operation of the following specific modifications:
• Addition of new screening and grit removal facilities
• Addition of four aeration tanks (1.55 MG each) with fine bubble diffusers (four
blowers at 5,000 cfm),
• Addition of four deep bed filters (10 ft. by 70 ft. each),
• Addition of two backwash tanks and two backwash reclaim tanks (and associated
pumps), two air scour blowers, with diversion of backwash to head of plant,
• Addition of UV disinfection (four channels, 360 lamps) and associated equipment
designed for 40 MGD peak flow,
• Addition of effluent parshall flume,
• Addition of post aeration (aeration diffusers in effluent sampling area, as well as
backwash tank area),
• Addition of effluent sampling area,
• Addition of equal split piping to the existing effluent pump station and the new
effluent pump station,
• Addition of new effluent pump station with 3 effluent pumps rated at 10 MGD each,
• Addition of 2 new anaerobic digesters (appx. 65 ft. diameter) with heat exchangers,
sludge transfer pumps, refurbishment of 3 existing anaerobic digesters,
in conformity with the project plans, specifications, and other supporting data
subsequently filed and approved by the Department of Environment and
Natural Resources.
One
Carolina
aturalji
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet www.ncwaterquatitv.orq 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal opportunity/Atfirmative Action Employer — 50% Recycled/10% Post Consumer Paper

Mr. Sterling B. Cheatham
June 30, 2008
Page 2
This Authorization to Operate is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0023965 issued March 7, 2008, and shall be subject to revocation unless
the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0023965.
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 [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.
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 Operate 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 T 15A: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.

Mr. Sterling B. Cheatham
June 30, 2008
Page 3
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 Operate 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 Operate 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.
If you have any questions or need additional information, please contact Ken Pohlig, P.E.
at telephone number [phone].
MM:kp
Sincerely,
a.14.4:t_i/fiff.
Coleen H. Sullins
/VOL--
cc: Anthony W. Boahn, P.E. — McKin & Creed,
New Hanover County Health Department
DWQ Wilmington Regional Office, Surface
Technical Assistance and Certification Unit
Point Source Branch, NPDES Program
Daniel Blaisdell, P.E.
Ken Pohlig, P.E.
Michelle McKay, E.I.
ATC File
P.A., Wilmington
Water Protection