NC0020346_Permit (Issuance)_19960701

NPDES DOCUMENT SCANNIMS COVER SHEET
NPDES Permit: NC0020346
Magnolia WWTP
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Document Type: (-Pe�rmit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Return Application
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date: July 1, 1996
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State of North Carolina
Department of Environment,
Health and Natural Resources j
FADivision of Water QualityJAr
James B. Hunt, Jr., Governor sk
Jonathan B. Howes, Secretary p E H R
A. Preston Howard, Jr., P.E., Director
July 1,1996
Mr.M.Gordon Smith,Jr.
Town of Magnolia
P.O. Box 108
Magnolia, North Carolina 28339
Subject: NPDES Permit Issuance
Permit No. NCO020346
Magnolia WWTP
Duplin County
Dear Mr. Smith:
In accordance with the application for a discharge permit received on January 18, 1996, the Division is
forwarding herewith the subject NPDES 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 US
Environmental Protection Agency dated December 6,1983.
This facility discharges into a zero-flow stream. Removal of this discharge is strongly recommended if a
more environmentally sound alternative is available at an economically reasonable cost. An engineering report
evaluating alternatives to discharge must be submitted to the Division on or before January 1,2001. The report
should include cost estimates for construction of a treatment plant that will meet the effluent limits specified in
Part III, Section F. of this permit. Upon review of the engineering report, the Division retains the right to
reopen and modify this NPDES permit to require removal of the discharge or to revise the permit limitations
within a specified time schedule.
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, Post Office Drawer
27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and
binding.
Please take notice this permit is not transferable. Part 11, E.4. addresses the requirements to be followed
in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Susan Wilson at telephone number(919)
733-5083,extension 555.
Sincerely,
Original Signed By -
David X Goodrich
A.Preston Howard,Jr.,P.E.
cc: Central Files
Wilmington Regional Office
Mr. Roosevelt Childress, EPA
Permits and-Engireering Unit
------ .
Faci lity Assessment U-nrt
P.O.Box 29535, Raleigh,North Carolina 27626-0535 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer 50%recycled/10%post-consumer paper

Permit No. NCO020346
STATE OF NORTH CAROLI NA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision 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,
Town of Magnolia
is hereby authorized to discharge wastewater from a facility located at
Magnolia Wastewater Treatment Plant
west of Magnolia
Duplin County
to receiving waters designated as an unnamed tributary to Millers Creek in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
1I, 1I1, and IV hereof.
The permit shall become effective August 1, 1996.
This permit and the authorization to discharge shall expire at midnight on July 31, 2001.
Signed this day July 1, 1996.
Original Signed By
_ David A. Goodrich
A. Preston Howard, Jr.,.P.E., Director
Division of Environmental Management
By Authority of the Environmental Mangement Commission

1
Permit No. NC0020346
SUPPLEMENT TO PERMIT COVER SHEET
Town of Magnolia
Wastewater Treatment Plant
is hereby authorized to:
1. Continue to operate an existing 0.09 MGD wastewater treatment facility consisting of an
influent pump station, bar screen, grit chamber, aerobic digester, extended aeration tank, dual
clarifiers, tertiary filters, sludge filters, sludge drying beds, chlorine contact chamber and post
aeration located at Magnolia Wastewater Treatment Plant, the end of McGovern Street, west
of Magnolia, Duplin County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to Millers Creek which is classified a Class C-Swamp waters in the Cape
Fear River Basin.

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137
fzz
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7
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N
ROAD CLASSIFICATION SCALE 1 -24 000
PRIMARY HIGHWAY LIGHT-DUTY ROAD.HARD 08
HARD SURFACE IMPROVED SURFACE 0 1 MILE
SECONDAPY HIGHWAY 0 7000 FEET
[HARO SURFACE UNWPF�VED ROAD F�
0 1 KILOMETER
Latitude 3A'5149' Longitude 78oQa'43".
Map # H26NE Sub-basin 03-06-1 9 CONTOUR INTERVAL 5FEET
Stream Class C-Sw •
QUAD LOCATION Magnolia WWTP
Discharge Class Domestic NC0020346
Receiving Stream UT to Millers Creek = Duplin County
Design Q -0-09 MGD Permit expires

A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0'20346
During the period beginning upon the effective date of the permit and lasting until expiration, the Pennittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Morill1prina RequIrpments
Measurement -Sample.-. "Sample
Monthly Avg, Weekly Avg. Daily Max. Frgguensv Type Location
Flow 0.09 MGD Continuous Recording I or E
BOD, 5-Day, 20°C" 12.0 mg/l 18.0 mg/l Weekly Composite l,E
Total Suspended Residue" 30.0 mg/1 45.0 mg/l Weekly Composite I,E
NH3 asN 2.0 mg/I<- cf: Weekly Composite E
Dissolved Oxygen— j..G���� �'�'fC Weekly Grab E,U,D
Fecal Coliform (geometric mean) 200.0 /100 ml 400.0 1100 ml Weekly Grab E,U,D
Total Residual Chlorine 2/Week Grab E
Temperature Daily Grab E
Temperature Weekly Grab U, D
Conductivity Weekly Grab E,U,D
Total Phosphorus Quarterly Composite E
Total Nitrogen (NO2 + NO3 + TKN) Quarterly Composite E
* Sample locations: E- Effluent, I - Influent, U - Upstream at least 100 feet, D - Downstream approximately 600 feet.
All stream samples shall be grab samples and shall be conducted weekly.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85 %
removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab sample.
There shall be no discharge-of floating solids or visible foam in other than trace amounts.

3I
Part III Permit No. NCO020346
F. Zero Flow Condition
The facility discharges into a stream with 7 0130Q2=0 cfs. Removal of discharge is
recommended if a more environmentally sou alternative is available at an economically
reasonable cost. An engineering report evalua ng alternatives to discharge is due on or before
January 1, 2001. As part of the report, the c, t of constructing a treatment plant that will meet
limits of S mg/l BOD, 2 mg/1 NH3, 6 mgA (rein.) DO, and 17 µg/l chlorine should be included, if
there are no feasible alternatives to surface�lischarge. Upon review of the engineering report, the
Division retains the right to reopen and odify this NPDES permit to require removal of the
discharge or to revise the permit limitatio within a specified time schedule.
4P
Gl

Staff Review and Evaluation
NPDES Wastewater Permit
FACILITY INFORMATION
Facility Magnolia WWTP
NPDES No. NC0020346
Design Flow(MGD) 0.09
Facility Class II
STREAM CHARACTERISTICS
Stream Name UT Millers Creek
Stream Class C-Sw
Sub-basin 030619
Drainage Area (mi'-) 0.25
S7Q10 (cfs) 0.0
W7Q10 (cfs) 0.0
30Q2 (cfs) 0.0
IWC (%) 100
Proposed Changes Parameters Affected Basis for change(s)
Frequency changes BODS, NH3-N, TSS, DO, TRC 2B .0500 (Class 11, WQ ltd.)
NH3-N limits(2/4 sum/win) NH3-N DEM policy for minimum NH3-
N
Compliance Schedule:
Special Condition(s):
Permits&Engineering Comments:
Monitoring frequencies have been modified from 2/Month to Weekly based on 2B.0500 for CLass
II facility. The monthly NH3-N limit has been changed to 2 mg/1 (summer) and 4 mg/l (win)
based on DEM policy for minimum NH3-N values. The facility has had 2 flow violations in
the past 2 years. TRC values are elevated. Instream monitoring data indicate a wide
variability in D.O. values with depressed DO's both up and downstream(possibly due to
swamp like conditions).
The facility was required to perform an EAA during this past permit cycle,but no analysis has
been performed. Regional office should comment on possible alternatives to discharge and if
the EAA requirement is necessary with the next permit cycle.
Prepared by: Susan A.WiI o -
Regional Office Evaluation and Recommendations:
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SOC PRIORITY PROJECT: No
To: Permits and Engineering Unit
Water Quality Section
Attention:Susan Wilson (Review Engineer)
Date: 2/22/96
NPDES STAFF REPORT AND RECOMMENDATION
County: Duplin
Permit No. NC0020346
PART I - GENERAL INFORMATION
1 . Facility and Address: Town of Magnolia WWTP
Post Office Box 459
Magnolia, NC 28453
2 . Date of Investigation: 2/20/96
3 . Report Prepared by: Steve West
4 . Person Contacted and Telephone Number:
Gordon Smith, ORC (910) 289-3405
5 . Directions to Site: Take the Magnolia exit NC Hwy 903) from
I-40 . Travel south 2 . 7 miles, crossing NC Hwy 117, to the dirt
access road on the right.
6 . Discharge Point:
Latitude: 340 53 ' 49 " Longitude: 780 03 ' 43 "
USGS Quad No: H 26 NE USGS Quad Name: Warsaw South
7 . Site size and expansion area consistent with application?
N/A
8 . Topography: The site is flat and approximately 110 feet msl .
9 . Location of nearest dwelling: No dwellings within 500 feet.
10 . Receiving stream or affected surface waters : UT to Miller' s
Creek
a. Classification: Class "C-Sw" waters
b. River Basin and Subbasin No. : 03 06 22
C. Describe receiving stream features and pertinent
downstream uses : Low flow creek used for
infrequent fishing.

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0 . 09 MGD
b. What is the current permitted flow limit? 0 .09 MGD
C. Actual treatment capacity of the current facility:
0 . 09 MGD
d. Date and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years : None.
e. Please provide a description of existing wastewater
treatment facilities : The existing facilities consist of
an influent pump station, bar screen, grit removal
chamber, extended aeration tank, dual clarifiers, dual
tertiary filters, gaseous chlorine contact tank, post
aeration, ultrasonic flow meter, aerated sludge holding
tank, and sludge drying beds .
f . Please provide a description of proposed wastewater
treatment facilities : Facility is beginning to show
signs of significant wear, and the Town will soon begin
to replace airlines and some of the weirs and separating
walls within the main treatment unit .
g. Possible toxic impacts to surface waters : Chlorine
h. Pretreatment Program: Not needed.
2 . Residuals handling and utilization/disposal scheme:
Residuals are dried and disposed of through McGill
Environmental Permit No. WQ0006816
3 . Treatment plant classification: Class II
4 . SIC Code: Primary — 4952
Wastewater Code Primary: 01 Secondary: N/A
Main Treatment Unit Code: 051X3
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved? No
2 . Special monitoring or limitations requests : None
3 . Important SOC, JOC or Compliance Schedule dates :
Date: N/A
Submission of Plans and Specifications : N/A
Begin Construction: N/A
Complete Construction: N/A

4 . Alternative Analysis Evaluation: Not done.
5 . Other Special Items : None
PART IV - EVALUATION AND RECONDENDATIONS
The Town of Magnolia WWTP has an excellent compliance record in
terms of submitted self monitoring results. The plant is beginning
to show significant signs of corrosion, and the Town has hired an
engineer to perform a study to determine immediate needs of which
the first action taken will likely be replacing air lines
throughout the plant.
Flow records have shown signs of significant sources of I&I, and
the Town appears to be aggessive in its search for problem areas .
It is recommended that a draft permit be prepared and placed
at public notice. If no significant adverse public comment is
received, it is recommended NPDES Permit No. NC0020346 be
reissued to the Town of Magnolia in accordance with the basin-wide
permitting strategy.
Signature of report preparer Date
_4J2,., z 6A
Quality Aegional Supervisor Date
cc: Technical Support Branch
Wilmington Regional Office Files
Central Files
FED P 6 j;.n