NC0023965_Permit (Issuance)_20080307

NPDES DOCUMENT SCANNING: COVER :MEET
NC0023965
Wilmington Northside WWTP
NPDES Permit:
Document Type: ;,
Permit Issuance
Wasteload Allocation
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:
March 7, 2008
This document is printed on reuse paper - ignore any
content an the reYerse side

Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
March 7, 2008
Mr. Sterling B. Cheatham, City Manager
City of Wilmington
PO Box 1810
Wilmington, North Carolina 28402-1810
Subject: Issuance of NPDES Permit No. NC0023965
James A. Loughlin (Northside) WWTP
New Hanover County
Dear Mr. Cheatham:
Division personnel have reviewed and approved your application for the subject permit. Accordingly, we are
forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of
North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and
the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended).
The Division received public comments during the 30-day public comment period expressing concerns with
the historic performance of the plant and requesting the State takes actions to address these issues. The
Division recognizes that the improvements to the chlorination system and pH adjustment system should
address the majority of the noncompliance issues. We expect the town to diligently complete the
improvements and to operate the plan efficiently to minimize noncompliance with the permit requirements.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following
receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of
the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service
Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and
binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to
obtain other permits which may be required by the Division of Water Quality or permits required by the
Division of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental
permit that may be required.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Visit us on the INTERNET CI) www.enr.state.nc.us

Permit No. NC0023965
James A. Loughlin WWTP
Page 2
If you have any questions concerning this permit, please contact Teresa Rodriguez at telephone number
[phone], extension 553.
Sincerely,
r ; Coleen H. Sullins
Cc: NPDES Files ;
Central Files
Wilmington Regional Office
U.S. EPA Region 4
Aquatic Toxicology Unit

Permit NC0023965
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
City of Wilmington
is hereby authorized to discharge wastewater from a facility located at the
James A. Loughlin (Northside) Wastewater Treatment Plant
2311 North 23"1 Street, Wilmington
New Hanover County, North Carolina
to receiving waters designated as the Cape Fear River within the Cape Fear River Basin in accordance
with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV
hereof.
This permit shall become effective April 1, 2008.
This permit and authorization to discharge shall expire at midnight on December 31, 2011.
Signed this day March 7, 2008.
Coleen H. Sullins., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0023965
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit
issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate
and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein.
The City of Wilmington is hereby authorized to:
1. Continue to operate and maintain the existing 8.0 MGD wastewater treatment facility located at the
James A. Loughlin (Northside) WWTP, 2311 North 23`d Street, Wilmington, New Hanover County,
discharging through outfall 001 and consisting of the following wastewater treatment components:
• mechanical bar screen
• grit removal device
• dual primary clarifiers
• dual trickling filters
• an aeration basin
• dual secondary clarifiers
• effluent pump station
• chlorine disinfection facilities
• manually -controlled de -chlorination facilities
• end -of -pipe effluent diffuser [three each, 11-inch diameter -ID iron pipes diffusing over a 90° radius]
• primary and waste -activated sludge pump stations
• sludge thickening facility
• anaerobic digesters with gas storage
• sludge de -watering facilities
2. After receiving an Authorization to Operate (ATO) permit from the Division, and submitting an
acceptable Engineer's Certification Form to the Division, begin operating the existing and new
facilities to treat 10.0 MGD of wastewater, and consisting of the following treatment components:
• mechanical bar screen
• grit removal device
• dual primary clarifiers
• dual secondary clarifiers
• aeration basin
• tertiary filters
• chlorine disinfection facilities
• dual final clarifiers
• UV disinfection facilities
• effluent pump station
• end -of -pipe effluent diffuser [three each, 11-inch diameter -ID iron pipes diffusing over a 90° radius and
three each 18-inch diameter -ID pipes diffusing over a 90° radius]
• primary and waste -activated sludge pump stations
• sludge dewatering facilities
• sludge thickening facility
• anaerobic digesters with gas storage

Permit NC0023965
3. After submitting an acceptable Engineer's Certification Form to the Division at completion of
construction, begin operating new facilities sufficient to treat 16.0 MGD of wastewater, consisting of
the following treatment components:
• mechanical bar screen
• grit removal device
• dual primary clarifiers
• dual secondary clarifiers
• aeration basin
• tertiary filters
• UV disinfection facilities
• dual final clarifiers
• dual effluent pump station
• odor control facilities
• end -of -pipe effluent diffuser [three each, 11-inch diameter -ID iron pipes diffusing over a 90° radius and
three each 18-inch diameter -ID pipes diffusing over a 90° radius]
• primary and waste -activated sludge pump stations
• sludge dewatering facilities
• sludge thickening facility
• anaerobic digesters with gas storage
4. Discharge from said treatment facilities through parallel effluent force mains (see A. 7.), at locations
specified on the attached map, into the Cape Fear River, a waterbody classified as SC waters within
the Cape Fear River Basin.

Permit NC0023965
Downstream Samp e P t t+>t
located -3.2 mil s
\ .. downstream of the
ischalrge
City of Wilmington
James A. Loughlin (Northside) WWTP
Receiving Stream:
Latitude:
Longitude:
Stream Class:
Cape Fcar River
34° 14' 27" N
77° 57' 10" W
SC
Drainage Basin: Cape Fear River Basin
Sub -Basin: 03-06-17
Permitted Flow: 8.0 MGD
Grid/Quad: K 27 NW / Wilmington, NC
NPDES Permit NC0023965
New Hanover County

Permit NC0023965
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [8.0 MGD]
During the period beginning on the effective date of the permit and lasting until expansion above 8.0 MGD or
permit expiration [whichever comes sooner], the permittee is authorized to discharge treated wastewater from
Outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below:
LIMTATIONS
:
'
MONtTORING
REQUIREMENTS,
Measurement
Frequency
Sample
Location1
PARAMETER
EFFLUENT
;Sample
Type.
Monthly
Average
* Weekly
_; Average` '
Daily
atiMunt
Flow
8.0 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5-day, 20° C2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent and
Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent and
Effluent
NH3 as N
3/Week
Composite
Effluent
Enterococci (geometric mean) 3
35/100 ml
276/100 ml
Daily
Grab
Effluent
Total Residual Chlorine4
Daily
Grab
Effluent
Temperature
Daily
Grab
Effluent
pH
> 6.8 and < 8.5 standard units
Daily
Grab
Effluent
Dissolved Oxygen
Daily
Grab
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Total Nitrogen
(NO2 -N + NO3 -N + TKN)
Monthly
Composite
Effluent
Total Copper
Monthly
Composite
Effluent
Total Cyanide
Monthly
Composite
Effluent
Total Silver
Monthly
Composite
Effluent
Total Zinc
Monthly
Composite
Effluent
Acute Toxicity 5
Quarterly
Composite
Effluent
Dissolved Oxygen 6
Variable7
Grab
U1, U2, D
Temperature 6
Variable?
Grab
U1, U2, D
Footnotes:
1. Ul: upstream in the NE Cape Fear River at the U.S. Highway 421 crossing. U2: Upstream at Muddy Point.
D: downstream at the Port Authority.
2. The monthly average effluent BOD5, and total suspended solids concentrations shall not exceed 15 % of the respective
influent value (i.e., 85% removal is required)
3. The limit becomes effective May 1, 2008. Daily monitoring is required beginning on the permit effective date.
4. If chlorine disinfection is implemented, then the total residual chlorine monitoring will apply. If no chlorination is
used,then the total residual chlorine monitoring does not apply.
5. Acute Toxicity — (Ceriodaphnia dubia 24-hour) no significant mortality at 90 %; February, May, August and
November; refer to Special Condition A. (4).
6. Stream Sampling — deferred to the Lower Cape Fear River Program by Memorandum of Agreement (MOA). Should
membership in this association terminate for any reason, the Permittee shall immediately inform the Division of Water
Quality in writing and inunediately resume instream monitoring as presented in this permit.
7. Variable Frequency — Stream sample shall be collected 3/Week during the summer months of June, July, August, and
September; samples shall be collected Weekly during the rest of the year.
Units: mg/L = milligrams per liter
MGD = million gallons per day
NO3-N = Nitrate Nitrogen
m1= milliliters
NO2-N = Nitrite Nitrogen
TKN = Total Kjendahl Nitrogen
Discharge shall contain no floating solids or foam visible in other than trace amounts.
Annual Priority Pollutant Analysis also applies to this permit [see A. (10.)].

Permit NC0023965
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [10.0 MGD]
Beginning upon receipt of the Engineer's Certification for operation at 10.0 MGD and lasting until expansion to
16 MGD or permit expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001.
Such discharges shall be limited and monitored by the Permittee as specified below:
y
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Sample
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Flow
10.0 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5-day, 20° C2
24.0 mg/L
36.0 mg/L
Daily
Composite
Influent &
Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent &
Effluent
NH3 as N
3/Week
Composite
Effluent
Enterococci (geometric mean)
35/100 ml
276/100 ml
Daily
Grab
Effluent
Total Residual Chlorine3
Daily
Grab
Effluent
Temperature
Daily
Grab _
Effluent
PH
> 6.8 and < 8.5 standard units
_
Daily
Grab
Effluent
Dissolved Oxygen
Daily
Grab
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Total Nitrogen
(NO2-N+NO3 -N+TKN)
Monthly
Composite
Effluent
Total Copper
Monthly
Composite
Effluent
Total Cyanide
Monthly
Composite
Effluent
Total Silver
Monthly
Composite
Effluent
Total Zinc
Monthly
Composite
Effluent
Acute Toxicity 4
Quarterly
Composite
Effluent
Dissolved Oxygen 5
Variable 6
Grab
U1, U2, D
Temperature 5
Variable 6
Grab
U1, U2, D
Footnotes:
1. U1: upstream in the NE Cape Fear River at the U.S. Highway 421 crossing. U2: Upstream at Muddy Point.
D: downstream at the Port Authority.
2. The monthly average effluent BOD5, and total suspended solids concentrations shall not exceed 15 % of the respective
influent value (i.e., 85% removal is required)
3. If chlorine disinfection is implemented, then the total residual chlorine monitoring will apply. If no chlorination is
used,then the total residual chlorine monitoring does not apply.
4. Acute Toxicity — (Ceriodaphnia dubia 24-hour) no significant mortality at 90 %; February, May, August and
November; refer to Special Condition A. (4).
5. Stream Sampling — deferred to the Lower Cape Fear River Program by Memorandum of Agreement (MOA). Should
membership in this association terminate for any reason, the Permittee shall immediately inform the Division of Water
Quality in writing and immediately resume instream monitoring as presented in this permit.
6. Variable Frequency — Stream sample shall be collected 3/Week during the summer months of June, July, August, and
September; samples shall be collected Weekly during the rest of the year.
Discharge shall contain no floating solids or foam visible in other than trace amounts.
Annual Priority Pollutant Analysis also applies to this permit [see A. (104].

Permit NC0023965
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [16.0 MGD]
Beginning upon receipt of the Engineer's Certification for completion of the 16.0 MGD expansion and lasting
until permit expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001 and 002.
Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT'
EFFLUENT
x , LIMITATIONS • •
• MONITORING
'_- . REQUIREMENTS
Measurementet
`
. Frequency
Sample
Locationl
PARAMETERS •
r +
•
Sample'
Type ,
Monthly ..
Weekly
Average •
D y`
' Maximuim
Average .
Flow
16.0 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5-day, 20° C 2
(April 1— October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
Influent & .
Effluent
BOD, 5-day, 20° C 2
(November 1 — March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
Influent &
Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent &
Effluent
NH3 as N
(April 1— October 31)
1.0 mg/L
3.0 mg/L
Daily
Composite
Effluent
NH3 as N
(November 1 — March 31)
2.0 mg/L
6.0 mg/L
Daily
Composite
Effluent
Enterococci (geometric mean)
35/100 ml
276/100 ml
Daily
Grab
Effluent _
Total Residual Chlorine3
13.0 µg/L
Daily
Grab
Effluent
Temperature
Daily
Grab
Effluent
pH
> 6.8 and < 8.5 standard units
Daily
Grab
Effluent _
Dissolved Oxygen
Daily average > 6.0 mg/L
Daily
Grab
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Total Nitrogen
(NO2 -N + NO3 -N + TKN)
Monthly
Composite
Effluent
Total Copper
Monthly
Composite
Effluent
Total Cyanide 4
Monthly
Composite
Effluent
Total Silver
Monthly
Composite
Effluent
Total Zinc
Monthly
Composite
Effluent
Acute Toxicity 5
Quarterly
Composite
Effluent
Dissolved Oxygen 6
Variable 7
Grab
U1, U2, D
Temperature 6
Variable 7
Grab
U1, U2, D
Footnotes:
1. I = influent; E = effluent; U1 = upstream in the NE Cape Fear River at the U.S. Highway 421 crossing; U2 = Upstream at
Muddy Point; D = downstream at the Port Authority.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (i.e., 85% removal is required).
3. Total Residual Chlorine (TRC) monitoring shall apply only if chlorine is used by the facility. See Condition A. (11.).
4. Permittee can request for the monitoring to be deleted if twelve (12) months of effluent data shows no detection.
5. Acute Toxicity — (Ceriodaphnia dubia 24-hour) no significant mortality at 90 %; February, May, August and
November; refer to Special Condition A. (4).
6. Stream Sampling — deferred to the Lower Cape Fear River Program by Memorandum of Agreement (MOA). Should
membership in this association terminate for any reason, the Permittee shall immediately inform the Division of Water
Quality in writing and immediately resume instream monitoring as presented in this permit.
7. Variable Frequency — Stream sample shall be collected 3/Week during the summer months of June, July, August, and
September; samples shall be collected Weekly during the rest of the year.
Discharge shall contain no floating solids or foam visible in other than trace amounts.
Annual Priority Pollutant Analysis also applies to this permit [see Special Condition A. (10.)].

Permit NC0023965
A. (4.) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (Quarterly)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North
Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single
Effluent Concentration" (Revised July, 1992 or subsequent versions). The monitoring shall be performed as a
Ceriodaphnia dubia 24-hour static test. The effluent concentration at which there may be at no time significant
acute mortality is 90% (defined as treatment two in the procedure document). Effluent samples for self -
monitoring purposes must be obtained during representative effluent discharge below all waste treatment. The
tests will be performed during the months of February, May, August and November.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE3B.
Additionally, DWQ Form AT-2 (original) is to be sent to the following address:
Attention:
North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed
in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Branch at
the address cited above.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test
requirement will revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina Division
of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Forms
submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival and appropriate environmental controls, shall constitute an invalid test and will require
immediate follow-up testing to be completed no later than the last day of the month following the month of
the initial monitoring.

Permit NC0023965
A. (5.) HISTORICAL PERMIT LIMITS
The Division recognizes that prior to issuance of this permit, the James A. Loughlin WWTP was permitted to
discharge with secondary limits of 30 mg/L of BOD5, 30 mg/L of TSS, and no limit for NH3 as N. At the
previously permitted flow of 8.0 MGD, these limits translate approximately to mass loads of 365 tons per year
(tpy) BOD5, 365 tpy of TSS, and 244 tpy of NH3 as N (assuming 20 mg/L). The mass loads described in this
paragraph will be one factor the Division considers when developing future wasteload allocations resulting from
the TMDL process or when considering future expansion requests for the James A. Loughlin WWTP.
A. (6.) ANTI -BACKSLIDING
The BOD5 and ammonia nitrogen (NH3 as N) limits in this permit may be replaced with less stringent limits
without violating state and federal anti -backsliding provisions if:
1) circumstances predicating the issuance of this permit have materially and substantially changed;
2) there are material and substantial changes to the facility;
3) new information comes available (such as the determination of a TMDL); or
4) new regulations become promulgated,
provided that the Division deems such modification appropriate and consistent with applicable laws and
regulations.
A. (7.) STIPULATION OF PARALLEL FORCE MAINS
By Authorization to Construct (ATC) for expansion to 16 MGD, the Division of Water Quality approved a new
effluent force main and outfall (with diffuser) approximately parallel to the existing effluent force main. The
Permittee shall sample final treated effluent upstream of any flow split to effluent pump stations or discharge
force mains. The Division of Water Quality acknowledges separate outfalls, however due to the single sampling
regime conducted prior to splitting, and the relative proximity of the discharge lines and outfalls, the Division
shall designate and regulate this discharge as a single outfall. Should conditions change or problems arise, the
Division may reopen this permit to designate separate outfalls, if needed.
A. (8.) EFFLUENT MIXING MODEL
The City of Wilmington shall submit a CORMIX Model (or equivalent) providing additional information
regarding end -of -pipe dilution no later than 12 months after an engineer's certification for the completion of
16.0 MGD expansion is issued. The model shall address dilution at the approved 16.0 MGD increased flow
rate into the Cape Fear River for both the existing and the new discharge -line diffusers.
A. (9.) PERMIT RE -OPENER: TMDL IMPLEMENTATION
The Division may, upon written notification to the Permittee, re -open this Permit in order to incorporate
or modify effluent limitations, monitoring and reporting requirements, and other permit conditions when
it deems such action is necessary to implement TMDL(s) approved by the USEPA.

Permit NC0023965
A. (10.) SPECIAL CONDITION — ANNUAL PRIORITY POLLUTANT SCAN
The permittee shall perform effluent Priority Pollutant (PPA) scans in accordance with 40 CFR Part 136 for all parameters listed in the
attached table. The Permittee shall sample approximately annually except to provide seasonal variation (perhaps in different calendar
quarters). Unless otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N)
Trans-1,2-dichloroethylene
Bis (2-chloroethyl) ether
Chlorine, total residual (TRC)
1,1-dichloroethylene
Bis (2-chloroisopropyl) ether
Dissolved oxygen
1,2-dichloropropane
Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite
1,3-dichloropropylene
4-bromophenyl phenyl ether
Kjeldahl nitrogen
Ethylbenzene
Butyl benzyl phthalate
Oil and grease
Methyl bromide
2-chloronaphthalene
Phosphorus
Methyl chloride
4-chlorophenyl phenyl ether
Total dissolved solids
Methylene chloride
Chrysene
Hardness
1,1,2,2-tetrachloroethane
Di-n-butyl phthalate
Antimony
Tetrachloroethylene
Di-n-octyl phthalate
Arsenic
Toluene
Dibenzo(a,h)anthracene
Beryllium
1,1,1-trichloroethane
1,2-dichlorobenzene
Cadmium
1,1,2-trichloroethane
1,3-dichlorobenzene
Chromium
Trichloroethylene
1,4-dichlorobenzene
Copper
Vinyl chloride
3,3-dichlorobenzidine
Lead
c d eCtracle?Qofn auh"ds4
Diethyl phthalate
Mercury
P-chloro-m-cresol
Dimethyl phthalate
Nickel
2-chlorophenol
2,4-dinitrotoluene
Selenium
2,4-dichlorophenol
2,6-dinitrotoluene
Silver
2,4-dimethylphenol
1,2-diphenylhydrazine
Thallium
4,6-dinitro-o-cresol
Fluoranthene
Zinc
2,4-dinitrophenol
Fluorene
Cyanide
2-nitrophenol
Hexachlorobenzene
Total phenolic compounds
4-nitrophenol
Hexachlorobutadiene
`- • Y9101104rgan QomPounds; _
Pentachlorophenol
Hexachlorocyclo-pentadiene
Acrolein
Phenol
Hexachloroethane
Acrylonitrile
2,4,6-trichlorophenol
Indeno(1,2,3-cd)pyrene
Benzene
,y >>Baaselrieuti'atooiifypoun='>
Isophorone
Bromoform
Acenaphthene
Naphthalene
Carbon tetrachloride
Acenaphthylene
Nitrobenzene
Chlorobenzene
Anthracene
N-nitrosodi-n-propylamine
Chlorodibromomethane
Benzidine
N-nitrosodimethylamine
Chloroethane
Benzo(a)anthracene
N-nitrosodiphenylamine
2-chloroethylvinyl ether
Benzo(a)pyrene
Phenanthrene
Chloroform
3,4 benzofluoranthene
Pyrene
Dichlorobromomethane
Benzo(ghi)perylene
1,2,4-trichlorobenzene
1,1-dichloroethane
Benzo(k)fluoranthene
1,2-dichloroethane
Bis (2-chloroethoxy) methane
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved by the Director, within 90 days
of sampling. A copy of the report shall be submitted to each the NPDES Unit and Central Files to the following address:
Division of Water Quality, Water Quality Section, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.

Permit NC0023965
A. (11.) TOTAL RESIDUAL CHLORINE
An EPA acute criteria of 13 ug/L total residual chlorine has been implemented in this permit [ref. EPA
National Recommended Water Quality Criteria, 2006]. The limit shall be implemented 18 months from
the effective date of the permit.
During this interim monitoring period, should interference issues occur and/or the facility not be able to
consistently meet or measure to values of 13 ug/1 total residual chlorine, the Division's Laboratory
Section/Laboratory Certification Unit should be contacted at (919) 733 — 3908. The Certification Unit
can then evaluate the effluent data and assist with any outstanding issues.

Table 1.
DENR / DWQ / NPDES Unit
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES Permit NC0023965
Wilmington's James A. Loughlin (Northside) WWTP
Facility Information
Applicant/Facility Name
City of Wilmington / James A. Loughlin (Northside) WWTP
Applicant Address
P.O Box 1810 Wilmington , NC 28402
Facility Address
2311 North 23'd Street, Wilmington, NC 28401
Permitted Flow (MGD)
8.0 / 10.0/ 16.0
Type of Waste
Domestic (99%) and Industrial (1%) process wastewater; Primary SIC
Code 4952; WW Code Prim. 01; Treatment Unit Code 40/08- 0 x 3
Related Permits
Sludge: land application WQ0001271 and WQ0011869
Facility Class / Permit Status
Class IV, Major / Permit modification
Drainage Basin / County
Cape Fear River Basin / New Hanover County
Miscellaneous
Receiving Stream
Cape Fear River
Regional Office
Wilmington
Subbasin
Stream Index
03-06-17
18-(71)
State Grid /
USGS Topo Quad
K 27 NW/
Wilmington, NC
Stream Classification
SC
Permit Writer
Teresa Rodriguez
303(d) Listed?
Yes
Date:
1/11/2008
Drainage Area (sq. mi.)
NA
Lat. 34° 14' 27" Long. 77° 57' 10"
Summer 7Q10 (cfs)
Tidal
Winter 7Q10 (cfs)
Tidal
30Q2 (cfs)
Tidal
Average Flow (cfs)
Tidal
IWC (%)
NA
Summary
The City of Wilmington submitted a request for modification of the existing permit to increase the
permitted flow to 10 MGD as an interim capacity before the construction of the 16 MGD treatment
system is completed. The permit has effluent limits for 8 MGD and 16 MGD. The City of Wilmington
and the Division entered into an SOC for the City's collection system upgrades. This SOC allowed the
City to divert wastewater flow from the Northeast Interceptor to the Northside WWTP. The SOC also
included a provision for the City to evaluate the capacity of the WWTP prior to completion of the 16
MGD expansion to treat and discharge waste in excess of the current permitted limit while not
exceeding the BOD mass allowed by the existing effluent limits.
Construction is under way for the 16 MGD facility. Some components of the new treatment system will
be available for use by March of 2008 providing a capacity of 10 MGD.
The current permit was issued in July 9, 2007 with an expiration date of December 31, 2011. A full
compliance review and a reasonable potential analysis were completed for the permit renewal. These
reviews and its conclusions are still considered current and valid.
Fact Sheet
NPDFS Permit NC:002 965
Page 1

Facility Description
James A. Loughlin (aka Northside) Wastewater Treatment Plant (WWTP) is a publicly owned
treatment works (POTW) utilizing a Class IV conventional treatment system to treat domestic and
industrial wastewater. The treatment system consist of an influent pump station, a mechanical bar
screen, grit removal device; dual primary clarifiers; dual trickling filters; an aeration basin; dual
secondary clarifiers; chlorine disinfection facilities, effluent pump station, sludge pump stations; sludge
thickening facility; anaerobic digesters; de -watering facilities, and solids land application. The
discharge is conveyed to the Cape Fear River by an end -of -pipe effluent diffuser (three each, 11-inch
diameter -ID black pipes spread at a 90° angle.)
The interim 10 MGD treatment system will utilize in addition to the existing system some of the new
units that have been completed for the construction of the 16 MGD plant. These are the new headworks,
aeration tanks, filters, UV disinfection, effluent pump station and anaerobic digesters. The new
facilities are expected to be on line in March 2008.
Proposed interim limits
The proposed limits for BOD during the interim period are 24 mg/1 monthly average and 36 mg/1 daily
maximum which represents the existing loads on the permit. Enterococci limits will become effective
May 1, 2008 as the existing permit requires. Fecal limits were eliminated from the permit requirements
for al three flow pages. The revision to the standards for class SC waters has been finalized.
Enterococci replaces fecal coliform for SC waters.
PROPOSED SCHEDULE OF ISSUANCE
Draft Permit to Public Notice:
Permit Scheduled to Issue:
NPDES UNIT CONTACT
January 16, 2008.
March 10, 2008.
If you have questions regarding any of the above information or on the attached permit, please
contact Teresa Rodriguez at [phone] ext. 553.
NAME:
DATE:
REGIONAL OFFICE COMMENTS
NAME: DATE:
///5-/Or
REGIONAL SUPERVISOR: DATE:
Fact Sheet
NPDES Permit NC0023965
Page 2

�ILMINGT �N
OF
NORTH CAROLINA
February 15, 2008
Teresa Rodriquez
NC Division of Water Quality
NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: City of Wilmington James A. Loughlin (Northside) WWTP
NPDES Draft Permit
Permit No. NC0023965
Dear Teresa,
City Manager Office
102 North 3ro Street
PO Box 1810
Wilmington, NC 28402-1810
910 341-7810
910 341-5839 fax
wilmingtonnc.gov
F F fl 1 8 2003
The City has reviewed the referenced Draft NPDES Permit, dated January 16, 2008 and we offer
the following comments:
A (2.) Effluent Limitations and Monitoring Requirements (8.0 MGD)
The parallel force main from the plant has not been installed but the new outfall to the Cape
Fear River has been completed and put into service. We suggest that this section reference the
use of Outfall 001 and 002 to be consistent with the 16 MGD requirements.
Supplement to the Permit Cover Sheet
This supplement should cite all specific facilities that will be in -place and operational under
each operating condition as follows:
8.0 MGD — All Existing Facilities
• Mechanical Bar Screen
• Grit Removal Device
• Dual Primary Clarifiers
• Dual Trickling Filters
• Aeration Basin
• Dual Secondary Clarifiers
• Effluent Pump Station
• Chorine Disinfection Facilities
• Manually Controlled De -Chlorination Facilities
• End of Pipe Effluent Diffuser (three each, 11-inch diameter -ID iron pipes diffusing
over at 90 degree radius)
• Primary and Waste Activated Sludge Pump Stations

Teresa Rodriquez
February 15, 2008
Page 2
• Sludge Thickening Facility
• Anaerobic Digesters with Gas Storage
• Sludge De -Watering Facilities
10.0 MGD — Combination of Existing and New Facilities
• New Mechanical Bar Screen
• New Grit Removal Device
• Existing Dual Primary Clarifiers
• New Aeration Basin
• Existing Dual Secondary Clarifiers
• New Tertiary Filters
• New Ultra Violet Disinfection Facilities
• New Effluent Pump Station
• Chorine Disinfection Facilities
• New Anaerobic Digesters with Gas Storage
• Primary & Waste Activated Sludge Pump Stations
• Sludge Dewatering Facilities
• Sludge Thickening Facility
• End of Pipe Effluent Diffuser
- 3- each, 11-inch dia.-ID iron pipes diffusing over at 90° radius
- 3- each 18-inch dia: ID iron pipes diffusing over at 90° radius
16.0 MGD — All New Facilities
• New Mechanical Bar Screen
• New Grit Removal Device
• New Dual Primary Clarifiers
• New Dual Secondary Clarifiers
• New Dual Final Clarifiers
• New Aeration Basin
• New Tertiary Filters
• New Ultra Violet Disinfection Facilities
• Two - Effluent Pump Stations
• Odor Control Facilities
• Anaerobic Digesters with Gas Storage
• Primary & Waste Activated Sludge Pump Stations
• Sludge Dewatering Facilities
• Sludge Thickening Facility
• End of Pipe Effluent Diffuser
- 3- each, 11-inch dia.-ID iron pipes diffusing over at 90° radius
- 3- each 18-inch dia: ID iron pipes diffusing over at 90° radius

Teresa Rodriquez
February 15, 2008
Page 3
If you have any questions or require further clarification, please do not hesitate to contact us.
Sincerely,
1-))?
2
'II EEB 1 8 2008
/II
1."11?% •IfTr7n�ry. ....1
cc: FrankC.,Styers; P1E., Deputy Public Utilities Director
Kenneth L. Vogt, P.E. Superintendent of Wastewater Treatment
Sterling B. Cheatham
City Manager

AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA
COUNTY OF NEW HANOVER
PUBLIC NOTICE
STATE OF NORTH
CAROLINA
ENVIRONMENTAL
MANAGEMENT
COMMISSION/NPDES UNIT
1617 MAIL SERVICE
CENTER
RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT
TO ISSUE A NPDES
WASTEWATER PERMIT
On the basis of thorough
staff review and
application of NC General
Statute 143.215.1 and
15A NCAC 02H.0109 and
other lawful standards
and regulations, the
North Carolina Environ-
mental Management
Commission proposes to
issue a National Pollutant
Discharge Elimination
System (NPDES) waste-
water discharge permit to
the person(s) listed below
effective 45 days from
the publish date of this
notice.
Written comments regar-
ding the proposed permit
will be accepted until 30
days after the publish
date of this notice. All 1/181x
comments received prior
to that date are
considered in the final
determinations regarding
the proposed permit. The
Director of the NC
1 Division of Water Quality
may decide to hold a
public hearing for the
proposed permit should
the Division receive a
significant degree of
public interest.
Copies of the draft permit
and other supporting
information on file used
to determine conditions
present in the draft
permit are available upon
request and payment of
the costs of reproduction.
Mail comments and/or
requests for information
to the NC Division of
Water Quality at the
above address, or call
Dina Sprinkle at (919)
733-5083, extension 363
at the Point Source
Branch. Please include
the NPDES permit
number (below) in any
communication.
Interested persons may
trtyDti1fWaeQu•alia52 N. he aoregoing affidavit with the advertisement thereto annexed it is adjudged by the Court that the said
Salisbury Street, Raleigh, NC 27604.1148 between :l properly made and that the summons has been duly and legally served on the defendant(s).
the hours of 8:00 a.m.
and 5:00 p.m. to review
information on file. ty of
Before the undersigned, a Notary Public of Said County and State,
Terrie Millard
Who, being duly sworn or affirmed, according to the law, says that he/she is
Financial Services Manager
of THE STAR -NEWS, a corporation organized and doing business under the Laws of the State of
North Carolina, and publishing a newspaper known as STAR -NEWS in the City of Wilmington
PUBLIC NOTICE STATE OF NORTH CAROLINA ENVIRONMENTAL MANAGEMENT
COMMISSION/NPDES UNIT 1617 MAIL SERVICE CENTER RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT TO ISSUE A NPDES WASTEWATER PERMIT On the basis
of thorough staff review and application of NC Gen
was inserted in the aforesaid newspaper in space, and on dates as follows:
Title: Financia
And at the time of such publication Star -News was a newspaper meeting all the requirements and
qualifications prescribed by Sec. No. 1-597 G.S. of N.C.
V ` iZ'e51Vl�n_�i
Sworn or affirmed to, and subscribed before me this ' day otY'T'�
Qrii.'AA7 ,A.D., COOP �! ,OTAgI- 5=
In Testimony Whereof, I have hereunto set my hand anEafixed r _y of licial seal he day and
year aforesaid. OO
BU 2�
My commission expires 1 2. +1A day of
L 'Ill t j %% Notary Public
SzP ,20 rz
MAIL TO:
Clerk of Superior Court

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—

CITY OF
WTLMINGTON
`.f NORTH CAROLINA
November 30, 2007 J ' 1 DEC
Mr. Gil Vinzani
Supervisor, Eastern NPDES Program
NPDES Unit
Division of Water Quality
DENR
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: NPDES Permit NC0023965
James A. Loughlin (Northside) WWTP
City of Wilmington
Dear Mr. Vinzani:
City Manager Office
102 North 3rd Street
PO Box 1810
Wilmington, NC 28402-1810
910 341-7810
910 341-5839 fax
wilmingtonnc.gov
[r,
:CERTIFIED MAIL
7004 2890 0002 8019 2635
The City of Wilmington is currently completing construction of a major plant expansion to a
capacity of 16 mgd for the Northside Wastewater Treatment Plant (WWTP) as permitted under
NPDES Permit NC0023965. Because a number of expanded facilities are being placed into
service well in advance of the completion of the project, the City retained Hazen and Sawyer to
evaluate whether the plant would be capable of reliable treatment beyond its current permitted
operating condition of 8 mgd prior to completion of all of the planned improvements. The
engineer conducted an Interim Capacity Evaluation (copy attached) based on facilities
improvements to be placed into service in early 2008 and concluded that, with these facilities in
operation, the plant can reliably treat 10 mgd. The City of Wilmington hereby requests a minor
permit modification to include a 10 mgd flow condition.
We have held meetings with your regional office staff, Mr. Ed Beck and Ms. Linda Willis, and
believe that they concur with our goal to permit an interim increase in capacity at the Northside
WWTP and are in general agreement with the conclusions of the Interim Capacity Evaluation.
Our understanding from Mr. Beck is that an increase in flow capacity would be permitted as long
as there is no increase in mass loadings from those in the current 8 mgd permit. We therefore
anticipate reduction in the concentration limits for BOD5 from 30 mg/L in the current 8 mgd
permit page to 24 mg/L for the 10 mgd condition.

Mr. Gil Vinzani
November 30, 2007
Page Two
We request any input you may have that could expedite this process. We are available to discuss
this request at your earliest convenience and look forward to your favorable response.
Sincerely,
Ster ing B. Cheatham
City Manager
cc: Ed Beck, Division of Water Quality
Frank C. Styers, P.E., Deputy Public Utilities Director
Ken Vogt, P.E., Superintendent of Wastewater Treatment
Craig Lundin, Project Manager
Tony Boahn, P.E., McKim and Creed
Ron Taylor, P.E., Hazen and Sawyer