NC0023256_Permit (Issuance)_20140502

NPDES DOCIMENT SCANNING COVER SHEET
NPDES Permit:
NC0023256
Carolina Beach WWTP
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:
May 2, 2014
Thus document is printed on reuse paper - ignore any
content on the rezrerse side

AT/A
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
May 2, 2014
Mr. William J. Raymond
Wastewater Treatment Superintendent
Town of Carolina Beach
1121 N. Lake Park Blvd.
Carolina Beach, NC 28428
Subject: Final NPDES Permit
Permit NC0023256
New Hanover County
Class N Facility
Dear Mr. Raymond:
Division personnel have reviewed and approved your application for renewal of the subject
permit. Accordingly, we are forwarding the attached 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 U.S. Environmental Protection Agency dated October 15, 2007 (or as
subsequently amended).
The final permit contains the following changes in response to your comments to the draft
permit transmitted on July 5, 2012:
• The Town requested that the permit expiration date be revised to allow a permit term of 5
years. The Division agrees to this request, the expiration date is May 31, 2019.
• The Town requested a correction on the Supplement to Permit Cover Sheet. The list of
components for the WWTP in the Supplement to Permit Cover Sheet was corrected as
requested.
• The Town requested removal of the monthly average flow limit. The Division can't remove the
flow limit from the permit. Flow limits are based on the hydraulic capacity of the treatment
system and are implemented in NPDES permits to ensure proper plant operations and
conformance with engineering design parameters.
• The Town requested removal of the limits for chlorodibromomethane and
dichlorobromomethane Although the limits will be maintained in the permit a schedule of
compliance of 5 years has been included to provide the Town time to conduct studies or
dilution modeling.
• The Town requested that the Division reconsider monitoring requirements for arsenic. After
reevaluating the data used for the reasonable potential analysis (RPA) the Division removed the
1601 Mail Service Center, Raleigh, North Carolina 27699-1601
Phone: [phone] Internet: www.ncdenr.gov

Mr. William Raymond
May 2, 2014
quarterly monitoring requirements for arsenic and nickel. The analytical results for these
parameters show that the levels detected are below the allowable water quality standards.
• The Town requested that the Division remove chloroform and bromoform monitoring
requirements. In January 2014 a new procedure was implemented for the RPA where the
confidence level was modified from 99% to 95%. The Division reevaluated the RPA for
chloroform and bromoform using the new procedure which resulted in no reasonable potential
to exceed water quality standards. Quarterly monitoring for chloroform and bromoform was
removed from the permit.
• The Town requested removal of quarterly monitoring for zinc. The Division agrees with this
request. Zinc does not show reasonable potential to exceed the action level standard and there
has been no failures in aquatic toxicity testing for the past 5 years.
• The Town requested reduction of Whole Effluent Toxicity (WET) monitoring to annual. The
WET program in North Carolina as approved by the EPA requires quarterly monitoring. Any
additional reduction in the frequency of monitoring could potentially jeopardize NCDWR's
single dilution method approval by EPA. The WET monitoring strategy was developed as a
highly cost effective way of meeting EPA's WET testing requirements. To our knowledge
North Carolina is the only state that has a simple pass/fail modified method in order to reduce
the cost of whole effluent aquatic toxicity monitoring. EPA has accepted this WET
modification because of the reduced cost to facilities and the fact that WET testing is
customized for each facility based on their instream waste concentration. Although most
NPDES facilities with WET monitoring requirements discharge wastewater every day,
NCDWR's approach requires the economical pass/fail testing method only four times per year.
• The Town requested reduction in monitoring frequency for BOD, TSS, enterococci, and
NH3N. The Division evaluated effluent data for the last three years following the Division's
Guidance for Reduction in Monitoring Frequency. All the parameters meet the criteria for
monitoring frequency reduction. Monitoring was reduced to twice per week.
• The Town requested a change to Special Condition A.(3). To modified the last paragraph by
adding "using approved methods" after "If the permittee monitors any pollutants more
frequently than required by this permit". The Division is implementing a modification to the
Whole Effluent Toxicity test section eliminating this paragraph since the requirement is already
included in the boilerplate.
In addition a special condition was added to your permit including requirements for electronic
reporting. Proposed federal regulations require electronic submittal of all discharge monitoring reports
(DMRs) and specify that, if a state does not establish a system to receive such submittals, then
permittees must submit DMRs electronically to the Environmental Protection Agency (EPA). The
Division anticipates that these regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to your final
NPDES permit. [See Special Condition A. (8)] For information on eDMR, registering for eDMR
and obtaining an eDMR user account, please visit the following web page:
http: / /portal.ncdenr.org/web /wq/admin/bog/ipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following web
site:

Mr. William Raymond
May 2, 2014
http: //www2. epa.gov/compliance/prop osed-npdes-electronic-rep orting-rule
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
Resources or permits required by the Division of Land Resources, the Coastal Area Management Act
or any other federal or local governmental permits that may be required.
If you have any questions concerning this permit, please contact Teresa Rodriguez at telephone
number [phone] or at email [e-mail].
Sincerely,
elnomas A. Reeder, Director
t/Division of Water Resources, NCDENR
cc: NPDES Files
Central Files
Wilmington Regional Office / Surface Water Protection Section
EPA Region 4 (e-copy)
Aquatic Toxicology Unit, Susan Meadows, Cindy Moore (e-copy)
ESS/Ecosystems Unit, Carrie Ruhlman, Steve Kroeger (e-copy)

0
Permit NC0023256
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
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, the
Town of Carolina Beach
is hereby authorized to discharge wastewater from a facility located at the
Carolina Beach WWTP
404 South Dow Road
Carolina Beach
New Hanover County
to receiving waters designated as the Cape Fear River in the Cape Fear River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II and III hereof.
The permit shall become effective June 1, 2014.
This permit and the authorization to discharge shall expire at midnight on May 31, 2019.
Signed this day May 2, 2014.
d1�he�Yias A. Reeder, Director
eft
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 9

Permit NC00232566
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 Town of Carolina Beach is hereby authorized to:
1. Continue to operate an existing 3.0 MGD wastewater treatment facility located in New Hanover
County at 404 South Dow Road, Carolina Beach, discharging via outfall 001 and consisting of the
following wastewater treatment components:
■ Mechanical bar screen
• Manual bar screen
• Grit removal/separator
• 1.5 MGD oxidation ditch
• Dual 0.75 MGD aeration basins (modified package plants)
• Dual secondary clarifiers
• Three traveling bridge tertiary filters
■ RAS/WAS pump room
• 1.25 MG equalization basin with lagoon aerator, bar screen and pump station with dual pumps
• Gas chlorination
• Chlorine contact chamber
• Gas dechlorination
• Aerobic digester
• Two sludge storage basins
2. Discharge from said treatment works into the Cape Fear River, a Class SC stream in the Cape Fear
• River Basin, at the location specified on the attached map.
Page 2 of 9

Permit NC0023256
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to
discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored9 by the
Permittee as specified below:
{..• ..
EFFLUENT CHARACTERISTICS
x ` • , EFFLUENT LIMITATIONS. iJ
i .: ^, ; x MONITORING: REQUIREMENTS .. <• �'
MonthlyWeekly
Average
Y
Average,.
Daily Maximum
Measurement
Fre uenc
p Y
Sample Type
Sample Location
Flow
3.0 MGD
.. Continuous
Recording
Influent or Effluent
BOD, 5-day, 20°C
(April 1 - October 31)1
5.0 mg/L
7.5 mg/L
2/week
Composite
Influent & Effluent
BOD, 5-day, 20°C 1
(November 1 - March 31)
10.0 mg/L
15.0 mglL
2/week
Composite
Influent & Effluent
Total Suspended Solids1 •
30.0 mg/L
45.0 mg/L
2/week
Composite
Influent & Effluent
NH3 as N
(April 1- October 31)
2.0 mg/L
6.0 mglL
2/week
Composite
Effluent
NH3 as N
(November 1- March 31)
4.0 mg/L
12.0 mg/L
2/week
Composite
Effluent
Total Residual Chlorine2
13.0 pg/L
Daily
Grab
Effluent
Enterococci (geometric mean)
35/100 ml
276/100 ml
2/week
Grab
Effluent
pH3
Daily
Grab
Effluent
Dissolved 0xygen4
Daily
Grab
Effluent
Conductivity
Daily
Grab
Effluent
Temperature
Daily
. Grab
Effluent
Total Nitrogen (NO2+NO3+TKN)
Monthly
Composite
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Total Lead
Quarterly
Composite
Effluent
Chlorodibromomethane5
13 ug/l
Monthly
Grab
Effluent
Dichlorobromomethane5
17 ug/I
Monthly
Grab
Effluent
Total Coppers
Quarterly
Composite
Effluent
Acute Toxicity?
Quarterly
Composite
Effluent
Effluent Pollutant Scan8
•
Footnote 8
Footnote 8
Effluent
Notes:
1. The monthly average effluent BODS and TSS concentrations shall not exceed 15% of the respective influent
value (85% removal).
2. The Division shall consider all effluent total residual chlorine values reported below 50 µg/1 to be in
compliance with the permit. However, the Permittee shall continue to record and submit all values reported
by a North Carolina certified laboratory (including field certified), even if these values fall below 50 µg/l.
3. The pH shall not be less than 6.8 standard units nor greater than 8.5 standard units.
4. The daily effluent dissolved oxygen concentration shall not be less than 5.0 mg/L.
5. Limits become effective June 1, 2019.
6. Quarterly sampling should coincide with Acute Toxicity testing.
7. Acute Toxicity (Mysidopsis bahia 24 hour) no significant mortality at 90 % with testing in February, May,
August and November (See Special Condition A. (3)).
8. The permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special
Condition A. (5).
Page 3 of 9

Permit NC00232564
9. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A (8).
See Special Condition A. (2) for instream monitoring requirements.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2) INSTREAM MONITORING REQUIREMENTS
Effluent
Measurement Frequency
.
YpCharacteristics;, ,
s 'Samp
Sample Lotation
:
Dissolved Oxygen
June -September
3/week
Grab
Upstream,2
D 1 & D
October May
1/week
o
Temperature C
June -September
p
3/week
Grab
Upstream,
p
D1 & D2
October -May
1/week
Conductivity
June -September
1/month
Grab
Upstream,
D1 & D2
October -May
Monthly
Notes:
1. Upstream = sample approximately 100 yards north of the outfall. D1 = 100 yards south of the outfall. D2
= within 10 feet of the outfall towards midstream.
As a participant in the Cape Fear River Basin Association, the instream monitoring requirements as stated above
are waived. Should your membership in the agreement be terminated, you shall notify the Division immediately
and the instream monitoring requirements specified in your permit shall be reinstated.
A. (3) 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 Mysid shrimp (Mysidopsis bahia) 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
TGE3E. Additionally, DWR Form AT-2 (original) is to be sent to the following address:
Attention:
NC DENR / DWR / Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later
than 30 days after the end of the reporting period for which the report is made.
Page 4 of 9

Permit NC0023256
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 Section 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 Resources indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
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.
A. (4) FREEBOARD MAINTENANCE
The permittee shall maintain a minimum of one (1) foot of freeboard in the surge basin and maintain
sufficient readings from a staff gauge that is surveyed at the lowest point of elevation.
Page 5 of 9

Permit NC00232566
A. (5) EFFLUENT POLLUTANT SCAN
The Permittee shall perform a totalof three (3) Effluent Pollutant Scans for all parameters listed below. One scan
must be performed in each of the following years: 2015, 2016, and 2017. Analytical methods shall be in
accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present
in concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly
toxicity test each year, and must represent seasonal variation [i.e. do not sample in the same quarter every year].
Unless otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1,2-dichloropropane
1, 3 -dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Reporting. Test results shall be reported on DWR Form- A MR-PPA1(or in a form approved by the Director) by
December 31 st of each designated sampling year. The report shall be submitted to the following address:
NCDENR/DWR/Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Page 6 of 9

Permit N00023256
A. (6) 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.
A. (7) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)1
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin
reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be
submitted in writing to the Division for written approval at least sixty (60) days prior to the date the
Page 7 of 9

Permit NC0023256,
facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid
for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations."
3. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.41].
Page 8 of 9

Permit NC0023256
Latitude:
Longitude:
USGS Quad #:
River Basin #:
Receiving Stream:
Stream Class:
34° 01' 42" N
77° 55' 08" W
K27SW
03-06-17
Cape Fear River
SC
Location
Town of Carolina Beach
WWTP
NC0023256
New Hanover County
Page 9 of 9

MNerJi) &d+
Ray P. Rothrock
Mayor
Lonnie Lashley
Councihnan
Bob Lewis
Councilman
TOWN OF CAROLINA BEACH
1121 N. Lake Park Boulevard
Carolina Beach, North Carolina 28428
910 458 2996
FAX [phone]
September 7, 2012
Ms. Jacquelyn M. Nowell
Senior Specialist
Complex Permitting Unit
Division of Water Quality
Surface Water Protection Section — NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Nowell:
Steve Shuttleworth
Mayor Pro Tern
Sarah Friede
Councilwoman
'timothy Owens
Town Manager
Subject: Permittee comments regarding Draft NPDES Permit
Permit No. NC0023256
Town of Carolina Beach WWTP
Class IV
New Hanover County
I have reviewed the Draft NPDES Permit for the Town of Carolina Beach WWTP, Permit
No. NC0023256, with the Town's wastewater treatment staff. The Town has several
comments regarding the permit. Likewise, the Town is also requesting several changes to
the permit before the final is issued. The comments and proposed permit changes are as
follows:
0 / 1. The Town requests that the permit expiration date be revised to December 31, 2017.
j This would allow for a full five years of authorized discharge that the NPDES permits
typically provide.
2. There is a correction that needs to be made on the "SUPPLEMENT TO PERMIT
COVER SHEET" page regarding the WWTP components. Among the components
listed are a "125,000 gallon equalization basin with lagoon aerator/mixer assembly"
and a "1.25 MGD emergency surge basin with bar screen and pump station with
dual pumps." The equalization basin was modified as required in the NPDES Permit
issued July 13, 2007. The current equalization basin has a volume of 1.25 MG and is
used daily as per the design. The correct description for inclusion in the permit is

that the Town has a "1.25 MG equalization basin with a lagoon aerator, bar screen,
and pump station with dual pumps."
3. The Town requests the removal of the effluent limitation of a 3.0 MGD monthly
\1 Q average for flow. We feel that the WWTP design capacity of 3.0 MGD was already
used to develop the limitations for the parameters in the permit. Therefore, the
inclusion of an effluent limitation for flow is unnecessary.
4.
_ckecAC
.- A—i :
ac+4"1,(jkt,
.exceed'd
al
sck44if ' Cyp,,,t/d,Pa1 ,
5.
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6.
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7.
The Town requests the removal of effluent limitations for the parameters
chlorodibromomethane and dichlorobromomethane. The limits set in the draft permit
for both of these parameters are based on human health carcinogen criteria. We
feel that a mixing factor should be provided for these parameters because they are
based on human health criteria. If the decision is made to deny the Town's request
that these be removed from consideration and impose limits on these two
parameters, the Town requests that the limits be imposed as monthly average
limitations only because these parameters are intended to address lifetime
exposure. If the limits are imposed, the Town also requests a four year compliance
schedule because we do not have the technology in place for removal of
trihalomethanes. The Town would need to evaluate our options in order to comply
with the new limitations. e t
The Town re s that the State reconsider the quarterly monitoring requirements
for arsenic he reason that the Town's data demonstrates a reasonable potential to
exceed the 10 microgram per liter human health criterion is because one-half of the
quantitation level was used in the analysis of non -detected data. The Town's
effluent would have no reasonable potential to exceed the human health criterion if
the highest value of quantified arsenic data was used instead (2 micrograms per
liter). The Town requests the removal of the quarterly monitoring requirement for
arsenic based on the quantified data used in the analysis. Instead of a limit, the
permit should state that after the two year monitoring period that the Department will
reevaluate whether permit conditions are necessary.
The Town requests the removal of the quarterly monitoring requirement for
bromoform and chloroform based on the lack of reasonable potential to exceed the
human health criterion for either parameter. We feel that monitoring of bromoform or
chloroform in current Town priority pollutant scans is more than adequate to
characterize these pollutant parameters.
The Town requests the removal of the quarterly monitoring requirement for zinc
based on the lack of reasonable potential to exceed the action level for zinc. It is our
opinion that there is no basis for any additional monitoring of zinc beyond the Town's
priority pollutant scans.
"�o • WW8. The Town requests the reduction of the quarterly whole effluent toxicity monitoring
e& requirement be changed to annual monitoring. The TP passed all 20 toxicity
I� f eaerA tests from February, 2007, to August, 2011.
9. The Town requests that the daily monitoring requirements for BOD, TSS,
Se-e enterococci, and NH3 be lowered to twice per week monitoring. The WWTP is
eiMC,t` discharging well below the permitted limits for BOD, TSS, enterococci, and NH3.
1/1-170.5:11k1 .0141 (#1 1944( Okti 41414 la hal

•
10. The Town requests a change to one of the sentences in Section A(3) which states,
"If the Permittee monitors any pollutant more frequently than required by this permit,
2 the results of such monitoring shall be included in the calculation and reporting of the
data submitted on the DMR and all AT Forms submitted." We requests that the
sentence read "If the Permittee monitors any pollutant more frequently than required
by this permit, using approved analytical methods, the results of such monitoring
shall be included in the calculation and reporting of the data submitted on the DMR
and all AT Forms submitted."
Thank you for considering these items. Staff believes that the requested changes are fair
and still provides ample protection to water quality. If you have any questions regarding
this letter, please contact me at 910-458-2996.
im ' W. Owens
To Manager

PR 0
Dan Wilcox LeAnn Pierce
Mayor ��° 10 Mayor Pro Tenr
4' i :m
Sarah Friede a 0 Gary Doetsch
Council Member = Council Member
Steve Shuttleworth
Council Member
TOWN OF CAROLINA BEACH
1121 N. Lake Park Boulevard
Carolina Beach, North Carolina 28428
March 31, 2014
Ms. Teresa Rodriguez
Environmental Engineer
N.C. Division of Water Resources
Dear Ms. Rodriguez,
Michael Cramer
Town Manager
On behalf of the Town of Carolina Beach, I would like to request a reduction of monitoring
frequencies for the parameters BOD5, TSS, NH3-N, and enterococci for the Town of Carolina
Beach WWTP NPDES Discharge Permit # NC0023256. I believe that the justifications I present
in this letter as well as the data spreadsheets I have included with this submitted request illustrate
that the Town of Carolina Beach WWTP has demonstrated consistent, long-term treatment
performance at levels far below effluent limitations. Therefore, I request that the Town of
Carolina Beach WWTP be considered for a reduction in monitoring from our existing permit
frequencies for the four target parameters BOD5, TSS, NH3-N, and enterococci.
Before I summarize the performance of each individual parameter I am requesting a reduction in
monitoring for, I will state how the Town of Carolina Beach WWTP is compliant with the
required general approval criteria. The Town of Carolina Beach WWTP has not been assessed
any civil penalties for permit limit violations during the previous three years. No designated
permittee for the Town of Carolina Beach WWTP nor any of its employees have been convicted
of criminal violations of the Clean Water Act within the previous five years. The Town of
Carolina Beach WWTP is not currently under an SOC for target parameter effluent limit
noncompliance. The Town of Carolina Beach WWTP is not on EPA's Quarterly
Noncompliance Report for target parameter limit violations.
The attached Excel spreadsheet, "2014 Monitoring Reduction BOD WKSHT," shows the
effluent BOD5 monthly averages for NPDES Permit #NC0023256 for the three year period from
February 2011 to January 2014 as well as the three year arithmetic mean of 0.5 mg/L. I included
two additional spreadsheets for the summer and winter BOD5 limits. The attached Excel
spreadsheet, "2014 Monitoring Reduction Summer BOD WKSHT," shows that the three year
arithmetic mean for the summer BOD5 limit months (April through October) is 0.4 mg/L. This

i
mean is 8 % of the summer BOD5 monthly average permit limit of 5.0 mg/L, well below the
required 50 % for the approval request. The attached Excel spreadsheet, "2014 Monitoring
Reduction Winter BOD WKSHT," shows that the three year arithmetic mean for the winter
BOD5 limit months (November through March) is 0.6 mg/L. This mean is 6 % of the winter
BOD5 monthly average permit limit of 10.0 mg/L, well below the required 50 % for the approval
request. There were zero daily sampling results over 200% of the monthly average limit for
BOD5 over the three year review period. There were zero non -monthly average limit violations
during the previous year for BOD5.
The attached Excel spreadsheet, "2014 Monitoring Reduction NH3 WKSHT," shows the effluent
NH3 monthly averages for NPDES Permit #NC0023256 for the three year period from February
2011 to January 2014 as well as the three year arithmetic mean of 0.3 mg/L. I included two
additional spreadsheets for the summer and winter NH3 limits. The attached Excel spreadsheet,
"2014 Monitoring Reduction Summer NH3 WKSHT," shows that the three year arithmetic mean
for the summer NH3 limit months (April through October) is 0.2 mg/L. This mean is 10 % of the
summer NH3 monthly average permit limit of 2.0 mg/L, well below the required 50 % for the
approval request. The attached Excel spreadsheet, "2014 Monitoring Reduction Winter NH3
WKSHT," shows that the three year arithmetic mean for the winter NH3 limit months
(November through March) is 0.3 mg/L. This mean is 7.5 % of the winter NH3 monthly average
permit limit of 4.0 mg/L, well below the required 50 % for the approval request.. There were
zero non -monthly average limit violations during the previous year for BOD5. There were five
daily sampling results at or above the 200% of the monthly average limit for NH3 over the three
year review period:
1. 3-7-2011 8.6 mg/L (monthly limit: 4.0 mg/L)
2. 4-1-2013 4.6 mg/L (monthly limit: 2.0 mg/L)
3. 4-2-2013 4.0 mg/L (monthly limit: 2.0 mg/L)
4. 6-4-2013 4.7 mg/L (monthly limit: 2.0 mg/L)
5. 6-18-2013 4.0 mg/L (monthly limit: 2.0 mg/L)
Three daily sampling results were over 200% of the monthly average limit for NH3 over the three
year review period, well below the 15 daily sampling results limit for the approval request.
The attached Excel spreadsheet, "2014 Monitoring Reduction TSS WKSHT," shows the effluent
TSS monthly averages for NPDES Permit #NC0023256 for the three year period from February
2011 to January 2014 as well as the three year arithmetic mean of 0.3 mg/L. This mean is 1 % of
the monthly average permit limit of 30.0 mg/L, well below the required 50 % for the approval
request. There were zero daily sampling results over 200% of the monthly average limit for TSS
over the three year review period. There were zero non -monthly average limit violations during
the previous year for TSS.

The attached Excel spreadsheet,"2414EnterococciMonitoringReductionIWKSHT," shows the
effluent enterococci monthly geometric means for NPDES Permit #N00023256 for the three
year period from February 2011 to January 2014 as well as the three year geometric mean of 4
MPN. This mean is 11 % of the monthly average permit limit of 35 MPN, well below the
required 50 % for the approval request. There were zero non -monthly average limit violations
during the previous year for enterococci. There were seven daily sampling results over 200% of
the weekly average limit for enterococci (276 MPN) over the three year review period:
1. 4-5-2011 >2420 MPN
2. 8-17-2011 >2420 MPN
3. 6-22-2012 830 MPN
4. 1-3-2014 1120 MPN
5. 1-6-2014 1986 MPN
6. 1-7-2014 1203 MPN
7. 1-8-2014 687 MPN
Seven daily sampling results were over 200% of the weekly average limit for enterococci over
the three year review period, well below the 20 daily sampling results limit for the approval
request.
Thank you for considering this request for a reduction of monitoring frequencies for the
parameters BOD5, TSS, NH3-N, and enterococci for the Town of Carolina Beach WWTP
NPDES Discharge Permit # NC0023256, and if you have any questions or concerns regarding
this request, feel free to contact me at your convenience.
Sincerely,
William . Raond
Wastewater Treatment Superintendent
Town of Carolina Beach
1121 N. Lake Park Blvd.
Carolina Beach, NC 28428
Phone: [phone]; Fax: [phone]; Cell: 910-465-1946
E-mail: [e-mail]
Cc: Gilbert DuBois, Public Utilities and Capital Projects Director, Town of Carolina Beach

, Rodriguez, Teresa
From: Rodriguez, Teresa
Sent: Friday, March 28, 2014 1:23 PM
To: [e-mail]
Subject: Draft final permit NC0023256 - Carolina Beach WWTP
Attachments: 23256 final permit 2014.pdf; 23256permitteecomments.pdf; 23526 final permit Ietter.pdf
Enclosed is the final draft for the subject permit for your review and comments. The permit was modified in response to
the permittee's comments.
Tere4a•Rodru welf
NPDDES Cohp1,e4.Permit-t Unit
NCDEIVR/DiNi.sion, of Water Re/sau rces-
T. 919-807-6387 F. 919-807-6489
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Montgomery, Lori
From:
Sent:
To:
Cc:
Subject:
Attachments:
Belnick, Tom
Tuesday, December 03, 2013 6:05 PM
Bill Raymond
Montgomery, Lori
NC0023256- Carolina Beach
Monitoringfreqreduction Oct 2012.pdf
Bill- as a follow-up to our phone conversation today, I'm attaching the Monitoring Frequency Reduction guidance. In
order for NPDES to consider any reductions in monitoring frequencies for BOD,TSS,Ammonia,and Enterococci, you will
need to submit some documentation per the guidance document. We will then incorporate results into the Final Permit
and address your comments to the Draft.
Since the original permit writer Jackie Nowell is out on medical leave, I'm reassigning Permit Finalization to Lori
Montgomery (copied, 919-807-6479). Feel free to contact Lori or me with any questions. You indicated that you would
be the best contact for technical questions and discussions about the Town's comments to the Draft Permit. The Final
Permit will ultimately be addressed to the new Town Manager Michael Cramer, but we can also shoot you an electronic
copy when the permit is finalized.
Finally, I mentioned that I had read about a new disinfection technology (VigorOx) being touted for curbing THM
production. No endorsement, but you can find the information at www.environmental.fmc.com under Water
Treatment. As I mentioned, you might also want to evaluate water quality modeling (such as CORMIX or dye study) to
determine available dilution at your site. Currently, this discharge to Cape Fear River is listed as TIDAL with no definitive
streamflow, thus no dilution consideration.
Hope this helps.
Tom Belnick
Supervisor, NPDES Complex Permitting Unit
NCDWR/Water Quality Programs
919-807-6390
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
i

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AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA
COUNTY OF NEW HANOVER
Public Notice
North Carolina Environmental Man-
agement Commission/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES
Wastewater Permit
The North Carolina Environmental
Management Commission proposes
to issue a NPDES wastewater dis-
charge permit to the persons)
listed below. Written comments re-
garding the proposed permit will be
accepted until 30 days after the
publish date of this notice. The Di-
rector of the NC Division of Water
Quality (DWQ) may hold a public
hearing should there be a signifi-
cant degree of public interest.
Please mail comments and/or in-
formation requests to DWQ a�'Tr
above address. Interested persons
may visit the DWQ at 512 N. Salis-
bury Street, 'Raleigh, NC to review
information on file. Additional in-
formation on NPDES permits and
this notice may be found on our
websile:
hiip:llportal.nodenr.orq/web,lweiswplpslnp weal
ender, or by calling [phone].
Th7 Town of Carolina Beach r-
quested renewal of pe. mtt
NC0023256 for Carolina Beach
WWTP in New Hanover County; this
permitted discharge is treated mu-
nicipal wastewater to Cape Fear
River, Cape Fear River Basin.
Before the undersigned, a Notary Public of Said County and State,
Anita Thomas
Who, being duly sworn or affirmed, according to the law, says that he/she is
Publisher's Assistant
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 North Carolina Environmental Management Commission/NPDES Unit 1617
Mail Service Center Raleigh, NC 27699-1617 Notice of Intent to Issue a NPDES Wastewater
Permit The North Carolina Environmental Management Commission proposes to issue r
NPDE
was inserted in the aforesaid newspaper in space, and on dates as follows:
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.
oittidieu
year aforesaid.
My commission expires /2' day of
Title: Publisher'sA/ssitant
Sworn or a firmed to, and subscribed before me this l2 day of
, A.D., aO/ L
In Testimony Whereof, I have hereunto set my hand and affixed n 'fife/ secii,Itilptig and
L • 0r`�� P'�` �
0/7
• 6lotar lblic
Upon reading the aforegoing affidavit with the advertisement thereto annexed it is adjudged by the Court that the said
publication was duly and properly made and that the summons has been duly and legally served on the defendant(s).
This
MAIL TO:
day of
Clerk of Superior Court

GpRol
Ray I'. Rothrock . Steve Shuttleworth
Alayor 0
li Mayor Pro Tenr
Lonnie Lashley 3 to Sarah Friede
Councilman O4' - = Councilwoman
13ob Lewis 10 �F Timothy Owens
Councilman gT1y CARfl� Town Afanager
TOWN OF CAROLINA BEACH
1121 N. Lake Park Boulevard
Carolina Beach, North Carolina 28428
910 458 2996
FAX [phone]
September 7, 2012
Ms. Jacquelyn M. Nowell
Senior Specialist
Complex Permitting Unit
Division of Water Quality
Surface Water Protection Section — NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Permittee comments regarding Draft NPDES Permit
Permit No. NC0023256
Town of Carolina Beach WWTP
Class IV
New Hanover County
Dear Ms. Nowell:
I have reviewed the Draft NPDES Permit for the Town of Carolina Beach WWTP, Permit
No. NC0023256, with the Town's wastewater treatment staff. The Town has several
comments regarding the permit. Likewise, the Town is also requesting several changes to
the permit before the final is issued. The comments and proposed permit changes are as
follows:
/1'. The Town requests that the permit expiration date be revised to December 31, 2017.
This would allow for a full five years of authorized discharge that the NPDES permits
typically provide.
2. There is a correction that needs to be made on the "SUPPLEMENT TO PERMIT
COVER SHEET" page regarding the WWTP components. Among the components
listed are a "125,000 gallon equalization basin with lagoon aerator/mixer assembly"
and a "1.25 MGD emergency surge basin with bar screen and pump station with
dual pumps." The equalization basin was modified as required in the NPDES Permit
issued July 13, 2007. The current equalization basin has a volume of 1.25 MG and is
used daily as per the design. The correct description for inclusion in the permit is

that the Town has a "1.25 MG equalization basin with a lagoon aerator, bar screen,
and pump station with dual pumps."
3. The Town requests the removal of the effluent limitation of a 3.0 MGD monthly
average for flow. We feel that the WWTP design capacity of 3.0 MGD was already
used to develop the limitations for the parameters in the permit. Therefore, the
inclusion of an effluent limitation for flow is unnecessary.
4. The Town requests the removal of effluent limitations for the parameters
chlorodibromomethane and dichlorobromomethane. The limits set in the draft permit
for both of these parameters are based on human health carcinogen criteria. We
feel that a mixing factor should be provided for these parameters because they are
based on human health criteria. If the decision is made to deny the Town's request
that these be removed from consideration and impose limits on these two
parameters, the Town requests that the limits be imposed as monthly average
limitations only because these parameters are intended to address lifetime
exposure. If the limits are imposed, the Town also requests a four year compliance
schedule because we do not have the technology in place for removal of
trihalomethanes. The Town would need to evaluate our options in order to comply
with the new limitations.
5. The Town requests that the State reconsider the quarterly monitoring requirements
for arsenic. The reason that the Town's data demonstrates a reasonable potential to
exceed the 10 microgram per liter human health criterion is because one-half of the
quantitation level was used in the analysis of non -detected data. The Town's
effluent would have no reasonable potential to exceed the human health criterion if
the highest value of quantified arsenic data was used instead (2 micrograms per
liter). The Town requests the removal of the quarterly monitoring requirement for
arsenic based on the quantified data used in the analysis. Instead of a limit, the
permit should state that after the two year monitoring period that the Department will
reevaluate whether permit conditions are necessary.
6. The Town requests the removal of the quarterly monitoring requirement for
bromoform and chloroform based on the lack of reasonable potential to exceed the
human health criterion for either parameter. We feel that monitoring of bromoform or
chloroform in current Town priority pollutant scans is more than adequate to
characterize these pollutant parameters.
7. The Town requests the removal of the quarterly monitoring requirement for zinc
based on the lack of reasonable potential to exceed the action level for zinc. It is our
opinion that there is no basis for any additional monitoring of zinc beyond the Town's
priority pollutant scans.
8. The Town requests the reduction of the quarterly whole effluent toxicity monitoring
requirement be changed to annual monitoring. The WWTP passed all 20 toxicity
tests from February, 2007, to August, 2011.
9. The Town requests that the daily monitoring requirements for BOD, TSS,
enterococci, and NH3 be lowered to twice per week monitoring. The WVVTP is
discharging well below the permitted limits for BOD, TSS, enterococci, and NH3.

10. The Town requests a change to one of the sentences in Section A(3) which states,
"If the Permittee monitors any pollutant more frequently than required by this permit,
the results of such monitoring shall be included in the calculation and reporting of the
data submitted on the DMR and all AT Forms submitted." We requests that the
sentence read "If the Permittee monitors any pollutant more frequently than required
by this permit, using approved analytical methods, the results of such monitoring
shall be included in the calculation and reporting of the data submitted on the DMR
and all AT Forms submitted."
Thank you for considering these items. Staff believes that the requested changes are fair
and still provides ample protection to water quality. If you have any questions regarding
this letter, please contact me at 910-458-2996.
Sincerely,
a.e...J
Timothy W. Owens
Town Manager

DENR/ DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0023256
Lc)-1- cam' t , c.�w
SI -
CrJ r i
Facility Information
Applicant/Facility Name:
Town of Carolina Beach
Applicant Address:
1121 N. Lake Park Blvd., Carolina Beach, NC 28428
Facility Address:
404 South Dow Road, Carolina Beach, NC 28428
Permitted Flow
3.0
Type of Waste:
Domestic (100%)
Facility/Permit Status:
Renewal
Facility Classification
IV
County:
New Hanover
Miscellaneous
Receiving Stream:
Cape Fear
River
Regional Office:
Wilmington
Stream Classification:
SC
USGS Topo
Quad:
K27SW
303(d) Listed?:
Yes
Permit Writer:
Jackie Nowell
HUC#:
Subbasin:
03030005
03-06-17
Date:
6/18/2012
Drainage Area (mi2):
NA
Summer 7Q10 (cfs)
Tidal
Winter 7Q10 (cfs) :
Tidal
Average Flow (cfs):
Tidal
IWC (%):
Primary SIC Code:
4952
SUMMARY OF FACILITY INFORMATION
The Town of Carolina Beach has requested renewal of the NPDES permit for Carolina
Beach Wastewater Treatment Plant. The existing WWTP with a design flow of 3.0
MGD discharges into the Cape Fear River, a class SC water in the Cape Fear River
Basin. The WWTP serves the Town of Carolina Beach with approximately 5800
persons and the Town of Kure Beach with approximately 2400 persons, for a total of
8200 persons. The wastewater is primarily domestic and the facility does not have a
pretreatment program.
The existing monthly average limits for the Carolina Beach WWTP are:
Flow = 3 MGD
BOD5 = 5 mg/1 (summer); 10 mg/1 (winter)
NH3 = 2 mg/1 (summer); 4 mg/1 (winter)
DO= 5 mg/1
TSS = 30 mg/1
Enterococci = 35/ 100m1 (mo. avg.); 276/ 100m1 (wk. avg.)
TRC= 13 ug/1 (da. Max.)
pH = 6.8 SU to 8.5 SU
Acute toxicity no significant mortality at 90% - tested in Feb May Aug and Nov
Monthly monitoring for total nitrogen and total phosphorus.
Quarterly monitoring for copper and zinc.
The Division prepared the last wasteload allocation (WLA) in January 1996. The
BOD5 and NH3N limits for 3.0 MGD were determined by the 1995 Cape Fear River
Basin management strategy for this segment of the Cape Fear River. Because of low
dissolved oxygen levels in the river, the strategy required tertiary limits for new and
expanding dischargers. When Carolina Beach expanded to 3 MGD in 2002, they were
Carolina Beach WWTP Fact Sheet
NC00223256
Page 1

given a BOD5 limit of 5 mg/land an ammonia limit of 2 mg/1 as recommended in the
management strategy. These limits will remain in the renewed permit.
The TRC limit of 13 ug/1 was added in the 2007 permit issuance based on protection
of the water quality standard for NC saltwater streams.
The enterococci limits were added in the 2007 permit issuance based on protection of
the NC standard.
The wastewater treatment plant consists of the following treatment units:
- Mechanical bar screen
- Manual bar screen
- Grit removal/separator
- 1.5 MGD oxidation ditch
- Dual 0.75 MGD aeration basins (modified package plants)
- Dual secondary clarifiers
- Three traveling bridge tertiary filters
- RAS/WAS pump room
- 125,000 gallon equalization basin with lagoon aerator/mixer assembly
- 1.25 MGD emergency surge basin with bar screen and pump station with dual
pumps
- Gas chlorination
- Chlorine contact chamber
- Gas dechlorination
- Aerobic digester
- Two sludge storage basins
Carolina Beach also has a spray irrigation permit (WQ0007728) and a reuse permit
(WQ0019336) issued by DWQ. The application area for the spray permit is
approximately 6.7 acres adjacent to the facility and the average daily volume applied
intermittently is 0.005 mgd.
RECEIVING STREAM
The receiving stream is the Cape Fear River, a class SC (saltwater) water in the Cape
Fear River Basin. Carolina Beach WWTP discharges into the lower portion of the Cape
Fear River. The receiving stream has been designated as tidal based on the best
professional judgment of Division staff because of the tidal fluctuation in the
discharge area. Because of this designation of tidal for the receiving stream, when
reasonable potential analyses are done there is no dilution provided, unless the
facility conducts a model to determine a reasonable diluton factor.
This segment of the Cape Fear River designated from a line across the river between
Lilliput Creek and Snows Cut to a line across the river from Walden Creek to the
Basin, is listed on the 2010 303d Impaired Streams List and the draft 2012 impaired
list for arsenic, copper and nickel. The Cape Fear River Basin Management Plan for
'this permitting cycle is still being developed by DWQ staff.
TOXICITY TESTING:
Carolina Beach WWTP Fact Sheet
NC00223256
Page 2

Existing limit: 24 hr pass/fail Acute limit at 90% (Mysid 24 hr. pass/fail). Since
February 2007 to August 2011, the facility has passed all 20 toxicity tests.
Recommendation: Continuation of Acute toxicity limit at 90%
COMPLIANCE SUMMARY:
Overall, compliance with limits in the permit has been achieved by the facility during
this permit cycle. There was one exceedance of the pH limit in 2008. There were
some apparent exceedances of the total residual chlorine limit, however the current
EPA approved compliance level for TRC is 50 ug/1 and therefore any reported values
less than 50 ug/1 are considered zero for compliance purposes. Therefore, the
reported TRC values were not considered limits violations.
DATA REVIEW :
A review of the average values for conventional parameters for the past three years
2011
2010
2009
Flow
(mgd)
1.34
1.55
1.39
BOD5
(mg/1)
0.93
1.07
0.359
NH3
(mg/1)
0.29
0.35
0.17
TSS
(mg/1)
0.43
0.29
0.25
DO
(mg/1)
7.2
7.06
7.34
TN
(mg/1)
17.8
17.2
19.6
TP
(mg/1)
3.17
2.51
2.84
The Carolina Beach WWTP has an average flow discharge of approximately 1.43 MGD
and is at 47% of design capacity. BOD5, NH3 and TSS are discharging well below the
permitted limits. Currently, there are no limits for TN and TP
INSTREAM MONITORING:
Current Parameters: Dissolved Oxygen, Temperature, Conductivity
Recommended Parameters: Dissolved Oxygen, Temperature, Conductivity
Upstream: sample approximately 100 yards north of the outfall
D 1: 100 yards south of the outfall
D2: within 10 feet of the outfall towards midstream
Carolina Beach is a member of the Lower Cape Fear River Program and therefore
individual instream monitoring requirements are waived as long as the Town is a
member. The memorandum of agreement between the Lower Cape Fear River
Program and DWQ was renewed July 1, 2011. The River program conducts instream
monitoring for its membership and compiles data for review and evaluation.
DO and temperature data from years 2008- 2010 sampled by the Lower Cape Fear
River Program was reviewed. Stations reviewed were B9850100- Cape Fear River at
channel marker 35; upstream of Carolina Beach WWTP and B9910000- Cape Fear
River at channel marker 23; downstream of Carolina Beach WWTP.
In 2010, the average DO above and below Carolina Beach WWTP was 8.0 and 8.2
mg/1, respectively. There were no monthly averages below the standard of 5 mg/1.
Carolina Beach WWTP Fact Sheet
NC00223256
Page 3

The average temperature above and below the WWTP was 20.0 and 19.8 degrees C,
respectively.
In 2009, the average DO above and below Carolina Beach WWTP was 7.5 mg/1, at
both sites. There were no monthly averages below the standard of 5 mg/1.
The average temperature above and below the WWTP was 20.7 degrees C, at both
sites.
In 2008, the average DO above and below Carolina Beach WWTP was 7.9 and 7.5
mg/1, respectively. There were no monthly averages below the standard of 5 mg/ 1.
The average temperature above and below the WWTP was 20.7 and 21.0 degrees C,
respectively.
A review of instream metals data from January 2004 to December 2008, at the same
stations indicated that arsenic, copper and nickel were exceeding the water quality
standards both above and below the Carolina Beach WWTP. Based in this data, the
segment of the lower Cape Fear River was placed on the impaired streams list.
REASONABLE POTENTIAL ANALYSIS
Data submitted in daily monitoring reports (DMR) and annual priority pollutant
analyses (PPAs) from 2008 through 2011 was evaluated and a reasonable potential
analysis (RPA) was done to determine whether effluent limitations or monitoring
should be included in this permit renewal. The RPA and effluent data is attached to
the factsheet and the results are summarized below:
• Existing quarterly monitoring for copper and zinc will remain in the permit.
These were the only metals that were required to be monitored in the existing
permit. The analysis of effluent data for both parameters indicated the
reasonable potential to exceed the allowable concentrations. Since copper and
zinc have NC action level standards and there have been no failures of acute
toxicity tests due to the effluent concentrations of copper and zinc, current
DWQ procedure is that limits will not be applied but quarterly monitoring will
be recommended.
PPA data was also evaluated by RPA, although the data was limited with only four (4)
datapoints per parameter: parameters with some data above detection levels were
arsenic, lead, mercury, nickel, selenium, silver, bromoform, chlorodibromomethane,
chloroform, and dichlorobromomethane.
• No monitoring required of mercury and selenium. Data did not indicate
reasonable potential to exceed the water quality standard instream.
• Quarterly monitoring for arsenic, lead, nickel, bromoform and chloroform will
be added to the permit based on the results of the reasonable potential
analysis on the limited dataset. Current DWQ procedure recommends
quarterly monitoring based on the predicted maximum concentration in
comparison to the allowable concentration.
• Effluent limitations will be added to the permit for chlorodibromomethane and
dichlorobromomethane based on the results of the reasonable potential
analysis which indicated the potential to exceed the water quality criteria
instream.
Carolina Beach WWTP Fact Sheet
NC00223256
Page 4

PROPOSED CHANGES:
The following modifications are recommended in this draft permit:
1) The treatment components of the facility have been updated on the supplement
to permit cover sheet.
2) Effluent limits for chlorodibromomethane and dichlorobromomethane have
been added to the permit based on results of the reasonable potential analysis
which indicated the potential to exceed instream water quality standards. The
monitoring frequency for these limits is monthly and the sample type is grab.
3) Quarterly monitoring for total arsenic, total lead, total nickel, bromoform, and
chloroform has been added to the permit based on the results of the reasonable
potential analysis.
4) A special condition, A. (4), requiring the maintenance of one foot of freeboard in
the surge basin has been added to the permit.
5) The existing special condition concerning the modification of operation has
been removed from the permit since this condition has been met by the facility.
6) The language for special condition A. (5) Effluent Pollutant Scan has been
updated to note that three scans must be completed during the permit cycle.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: 07/ 5 / 2012
Permit Scheduled to Issue: 10/01/2012 (estimated)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit,
please contact Jackie Nowell at [phone].
NAME: DATE:
Carolina Beach WWTP Fact Sheet
NC00223256
Page 5

REGIONAL OFFICE COMMENT:
NAME: DATE:
RO SUPERVISOR SIGNATURE: DATE:
Carolina Beach WWTP Fact Sheet
NC00223256
Page 6

Carolina Beach 2014 Saltwater RPA 95% Probablity/95% Confidence
NC0023256
Qw (MGD) _
IQIOS (cfs) =
7Q I OS (cfs) _
7Q1OW (cfs) =
30Q2 (cfs) =
Avg. Stream Flow, QA (cfs) _
Receiving Stream:
3.00
Acute IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Cape Fear River
MAXIMUM DATA POINTS = 58
WWTP/WTP Class:
IWC @ 1QIOS = 100.00%
IWC @ 7Q10S = 100.00%
IWC @ 7Q1OW = 100.00%
IWC @ 30Q2 = 100.00%
IWC@QA= 100.00%
Stream Class: SC
Outfall 001
Qw = 3 MGD
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
PQL
UNITS
REASONABLE POTENTIAL RESULTS
NC WQS /
Chronic
Applied
Standard
�/2 FAV /
Acute
Il
Max Pred
# Det. CAllowable Cw
.
RECOMMENDED ACTION
Arsenic
C
lu
HH
ug/L
0
0
\ ;\
Acute: NO WQS
__ _ -----_ _ ---
Chronic: 10.0
-------------------------
--
Cadmium
NC
5
SW
42
ug/L
0
0
N/A
Acute: 42.0
_ _ ----- _ ---
Chronic:-5.0
----
-----------------------
Total Phenolic Compounds
NC
300
A
10.0
ug/L
0
0
N/A
Acute: NO WQS
__ _ _ _
----- -------------------------------
Chronic: 300
Chromium
NC
20
SW
ue/L
0
0
N/A
Acute: NO WQS
_ ---------
Chronic:ZQ
-------------------------
---
Copper (AL)
NC
3
SW
5.8
ug/L
22
16
31.5
Acute: 5.8
Chronic: 3.0 ---
22 value(s)> Allowable Cw
/ '�%
`�/
----------------------------
Cyanide
NC
I
SW
1
10.0
ueil.
0
0
N/A
Acute: 1.0
_ _ -----1.0_ ---
Chronic:
---------------------------•
Lead
NC
25
SW
221
ug/L
0
0
N/A
Acute: 221.0
_ _ _ _
----- _---
Chronic:25.0
------------------------ ----
Mercury
NC
25
SW
0.5
ng/L
(1
0
N/A
Acute: NO WQS
_ _ -----� ---
Chronic:2
----------------------------
Molybdenum
NC
2.0
III -I
m:JL
0
0
N/A
Acute: NO WQS
_ _ ---
Chronic: 2.0
--------------------------
--
Nickel
NC
8.3
SW
75
ug/L
0
0
N/A
Acute: 75.0
_ -----_ -------------------------------
Chronic:8.3
Page 1 cf 2
SALTWATER RPA 2014.xlsm.rpa
3/14/2014

Carolina Beach
NC0023256
2014 Saltwater RPA 95% Probablity/95% Confidence
MAXIMUM DATA POINTS = 58
Outfall 001
Qw = 3 MGD
Selenium
NC
71
S\1
ue I.
U U
\ ,\
Acute: NO WQS
_ _ _ ----
----- 71.0
Chronic:
------- — —
Silver (AL)
NC
0.10
S\1'
I ,)0
u12i1.
0 0
NSA
Acute: 1.900
__ _ _____ _ __
Chronic: 0.100
___ _ _
Zinc (AL)
NC
86
SW
95
ug/L
31 31
71 1 _
Acute: 95
_ _ -------------------------
Chronic:86 No value > Allowable Cw
-----
Bromoform
NC
140
HH
µg/L
4 -I
Note: n <9
Limited data se
60.1
Default C.V.
Acute: NO WQS
—
Chronic: 140
No value > Allowable Cw
— —<-c b 49D
G C.� „ — D — — — —
Chloroform
NC
170
1111
ug/L
4 4
Note:n <<< 9
imited data set
59.829
Default C.V.
Acute: NOW S
_ — — — _Q —
Chronic: 170
No value> Allowable Cw
— — — — _ C1,
— — —
— — — — — — —
0 0
N:A
Acute:
_ -------
Chronic:
---------------
—
0 (,
N/A
Acute:
_ _
Chronic: — -- -— - — - — -
—
— — — —
Acute:
---------------------------------------
Chronic:
Acute:
------- -----
Chronic:
—---— ---- --
--- —---
Acute:
Chronic:
—
u u
N/A
Acute:
_ ----------
Chronic:
— -----------------
--
N .\
Acute:
_ _ ---------
Chronic: -
-----
----------
Page 2 of 2
SALTWATER RPA 2014.xism.rpa
3/14/2014

REASONABLE POTENTIAL ANALYSIS - DATA
Arsenic - HH Standard
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Date Data BDL=1/2DL Results
12/1/2008 `< 2 1 Std Dev. 2.0616
7/1/2009 2 2 Mean 3.2500
12/1/2010 < 10 5 C.V. (default) 0.6000
9/1/2011 ' < 10 5 n 4
Mult Factor =
Max. Value
Max. Pred Cw
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
4.7400
5.0 ug/L
23.7 ug/L
1
2
3
4
5
6
7
8
9
10
11
12 12/1/2008
13
14
15
16
17
18
19
20
21 7/1/2009
22
23
24
25
26
27
28
29
30
31 12/1/2010
32
33
34 9/1/2011
35
36
37
38
8/ 1 /2007
Copper (AL)
Date Data BDL=112DL
25 25
12 12
9 9
12 12
20 20
12 12
12 12
21 21
18 18
12 12
12 12
17 17
10 5
10 5
10 5
10 5
12 12
10 5
15 15
10 5
14 14
14 14
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
USE ONLY
"PASTE SPECIAL -
Values" WITH
"COPY"
COMMAND
5.7512
12.1364
0.4739
22.0
1.9
25.0 ug/L
48.0 ug/L
23256rpa2012,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
Lead
Date Data BDL=1/2DL Results
1 12/1/2008 21 21 Std Dev. 9.0035
2 7/1/2009 < 1 0.5 Mean 7.8750
3 12/1/2010 ! < 10 5 C.V. (default) 0.6000
4 9/1/2011 < 10 5 n 4
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
4.7400
21.0 ug/L
99.5 ug/L
8
Mercury
Date Data BDL=1/2DL Results
1 12/1/2008 1 0.5 Std Dev.
2 7/1/2009 0.5 0.25 Mean
3 12/1/2010 0.577 0.577 C.V. (default)
4 9/1/2011 0.5 0.25 n
5
6 Mult Factor = 4.7400
7 Max. Value 0.6 ng/L
8 Max. Pred Cw 2.7 ng/L
9
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
0.1695
0.3943
0.6000
4
23256rpa2012,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
10
Nickel
Date
1 12/1/2008
2 7/1/2009
3 12/1/2010
4 9/1/2011
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Data
BDL=1/2DL Results
5 2.5 Std Dev. 1.3150
3 3 Mean 3.8750
10 5 C.V. (default) 0.6000
10 5 n 4
Mull Factor =
Max. Value
Max. Pred Cw
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
11
Selenium
4.7400
5.0 ug/L
23.7 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
Date Data BDL=1/2DL Results
12/1/2008 s <. 1 0.5 Std Dev. 2.1360
7/1/2009 ' 3 3 Mean 3.3750
12/1/2010 i < 10 5 C.V. (default) 0.6000
9/1/2011 ( <1, 10 5 n 4
Mult Factor = 4.7400
Max. Value 5.0 ug/L
[' Max. Pred Cw 23.7 ug/L
23256rpa2012,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
13
Zinc (AL)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Date Data BDL=1/2DL Results
31 31 Std Dev.
36 36 Mean
C.V.
n
44 44 Mult Factor =
36 36 Max. Value
Max. Pred Cw
34 34
27 27
12/1/2008 41 41
42 42
36 36
7/1/2009 33 33
27 27
25 25
31 31
40 40
22 22
12/1/2010 33 33
35 35
35 35
34 34
25 25
9/1/2011 22 22
39 39
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
14
Bromoform
6.3163
33.0909
0.1909
22
1.3100
44.000 ug/L
57.640 ug/L
Date Data BDL=1/2DL Results
1 12/1/2008 11.3 11.3 Std Dev.
2 7/1/2009 23.2 23.2 Mean
3 12/1/2010 7.39 7.39 C.V. (default)
4 9/1/2011 8.87 8.87 n
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Mult Factor =
Max. Value
Max. Pred Cw
USE ONLY
"PASTS
SPECIAL -
Values" WITH
"COPY"
7.1897
12.6900
0.6000
4
4.7400
23.2 pg/L
110.0 pg/L
23256rpa2012,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
17
Dichlorobromomethane
Date Data BDL=1/2DL Results
1 12/1 /2008 11.9 11.9 Std Dev. 22.7641
2 7/1/2009 60 60 Mean 27.3750
3 Dec-10 11.6 11.6 C.V. (default) 0.6000
4 Sep-11 26 26 n 4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
Mult Factor = 4.7400
Max. Value 60.00000 pglL
Max. Pred Cw 284.40000 pg/L
23256rpa2012,data
Date}

REASONABLE POTENTIAL ANALYSIS - DATA
15
Chlorodibromomethane
Date Data BDL=1/2DL Results
1 12/1/2008 22.3 22.3 Std Dev.
2 7/1/2009 90.8 90.8 Mean
3 12/1/2010 15.9 15.9 C.V. (default)
4 9/1/2011 28.9 28.9 n
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
34.6258
39.4750
0.6000
4
16
Chloroform
Mult Factor = 4.7400
Max. Value 90.80000 pg/L
Max. Pred Cw 430.39200 pg/L
Date Data BDL=1/2DL Results
1 12/1/2008 2.72 2.72 Std Dev.
2 7/1/2009 23.1 23.1 Mean
3 12/1/2010 3.73 3.73 C.V. (default)
4 9/1/2011 11 11 n
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
USE ONLY
"PASTE
SPECIAL -
Values" WITH
"COPY"
9.3958
10.1375
0.6000
4
Mult Factor = 4.7400
Max. Value 23.10000 pg/L
Max. Pred Cw 109.49400 pg/L
23256rpa2012,data
Date)

Carolina Beach WWTP
NC0023256
REASONABLE POTENTIAL ANALYSIS
Outfall 001
Qw=3 MGD
Qw(MGD)= 3.00
IQI0S(cfs)= Tidal. IWC = 100%
7QIOS (cfs). Tidal, IWC = 100%
7Q10W (era). Tidal, IWC = 100%
30Q_ (cfs) = Tidal, IWC = 100%
Avg. Stream Flow. QA (eta) = Tidal, IWC = 100%
Reeeivin Stream: Cape Fear River
W WTP/WTP Clasx 11
IWC Q' IQIOS - 100.0C%
IWC (a 7QIOSa 100.00%
IWC@7010Wa 100.00%
IWC 30Q2 = 100.00%
1WC(d' ,QA- 100.00%
Stream Class: SC
CHRONIC TEST CONCENTRATION o DEFAULT %
= 90%
PARAMETER
TYPE
(I)
STANDARDS a CRITERIA (2)
2
REASONABLE POTENTIAL RESULTS
NCWQSI Applied yaFAV;
Chronic Standard Acute
n g Del Max Prcd Allowable Cw
Cw
Arsenic
Itj
C
10 1111(Qavg)
ug/l.
4 1
Notes a 59
23.7
Default C.V.
Acute: NO WQS
_hron Cic:_ __ 10A---
No valuc> Allowable Cw
-
RPA 1.; l.imilod0ataxt(n' sonylkks)-apply_
Quarterly Monitoring
Cadmium
NC
5 SW(7Q119s) 42
u,:1.
0 0
WA
Acute: 42.0
Chronic: 5.0
Total Phenolic Compound=
NC
300 A(7Q10s)
10.0
ug4.
0 0
NIA
Acute: NO WQS
_ _- '--_'-'-_-'-'-'-'-----'-----'
Chronic:-
Chromium
NC
20 SW(30Q2)
ng/I.
t
N/A
Acute: NO NO WQS
Chronic: -20 ._
Coppar(AL) /
NC
3 SW(7Q10a) 5.8
ugA.
22 16
4S.0
Acute: 5.8
__.-.- __
Chronic: 7.0 -
22 valuc(sl > Allowable Cw
_ ___ _
RI'A for AL(Cu,7roM,Fe.CI) - apply Quarterly
Monitoring in conjunction with 70X Test
Cyanide
NC
I SW(7QIOs) I
10.0
ug4.
0 0
N/A
Aculc: 1.0
Lead
NC
25 SW(7Q10s) 221
ug/L
4 1
Nate: n 59
Limbed data set
99.54
Ikfldt C.V.
Acute: 221.0
__ -----_ -_
Chronic: 25.0
No value> Allowable Cw
-- _-- _ _-• _ -- _
RPA for Limited Dalasct (n<8 samples) - apply
Quarterly Monitoring
t00wury t
NC
25 SW)7Q IU0)
1:5
Ise.
4 1
Note: a <9
limited data set
2,7
Default C V.
Acute: NO WQS
•
__ Chronic:-•-•- -PA, 25
No value> ABowwebk Cw
_
No RPrcdiclal Maw <50%o(Al o wabk Ca
- No hfrmitoring rewired
t.tolybdenum
NC
2,0 1111(7Q10.)
mg4.
0 0
N/A
Acute: NO WQS
_ _.-•_ __----•-•-•-•-•-•-•-•-•-•-•---•
Chronic: 2.0
.
rllckcl ,A
NC
83 SW(7QI0s) 75
_
np1
4 1
Note: a 59
Undied data set
23.7
Default C.V.
Acute: 75.0
• -. __
Chronic - --fir-
2 valuers) > Aslowal4e Cw
RPA fa Limited Dauxt (a<8 samples)- apply_
Quarterly Monitoring
Carolina Beach WWTP
NC0023256
Page of
REASONABLE POTENTIAL ANALYSIS
23256rpe2012.rpe
Br7I2012
Outfall 001
Qw=3 MGD
Swlvdum
"i'j
NC
71
SW(7QI0t)
ug4.
4 1
Note: n < 12
Limited data set
23.7
Default C.V.
Acute: NO WQS
___-
_ Chronic: 71.0___
No value> Altmwabk Cw
__
No RPA._ Prcdictcd Mar < 50% of Allowable Cw
-No Monitoring required
Sorer IALI
NC
010
SW(7Q10s)
I.90
n _9.
0 0
N/A
Acute: 1.900
Chronic:_ __ O.10_
z�n<Intl
I
NC
00
SW(7QIOs)
_
up:1,
22 22
57.64
Acute:95
_____ __
Chronic.: 86
No value> A0o wabk Cu
_ _.
No RPA. Prali0/wl Mar = 50%of Allowable
Cw - apply Quarterly Monitoring
nmrcoorm
' �//
/
,- `
It',
IIH(7Q10s)
Pg4.
4 4
ma. n <9
Waited data gel
110.0
Default C.V.
Acute: NO WQS
_ ._._._ _
Chrank: -cal- .
No NAM > Allowable Cu
_.
No RPA. Prodicted Mar ?; 50%of ARouabk
Cw- apply Quarterly Monitoring
Cnlc..reoom oeanc
/
I./
//.
CC,�
13
IR((7QIOa)
pg4.
4 4
Note: n<9
Limited data set
430.392
DeC.V.
Acute: NO WQS
__fault CMonk-- :---13 _
4 vaha:(s)> Allowable Cw
_,
RPAfor Limited Darasdrollbut )2oalues>
Allowable Cw- apply Monthly Monitoringuitb
udnon,u»
r:e
170
EHt(7Q10s)
5/11.
4 4
Nuts: n <9
Limited data se
109.494
Ikfault C.V.
Acute: NO WQS
_ _____ ____
Chronic: 170
No value> Allowable Cw
_ _ _ _ _ _ _ _ _
NoRPA.IRedidal Mar 250%of Alowabk
Cw- apply Quarterly Monitoring
D,rllo,obrnnwmethal,r
r:C
11H(7Q10s)
p84.
4 4
Nnta a<9
Umileddata set
284.4
DcfaultC V.
Acute: NO WQS
___
-Chronic:- -17---
2 value(s)> Alkm'abie Cw
_ _ _ _ _
RPAforLimitedDavuvea(no3)but2vatup>-
Allowable Cw- apple Monthly Monitoring with
0 0
WA
Acute:
Chronic:
o
WA
Acute:
0 0
N/A
Acute:
'-----------------------------------
- CArmuc _
0 R
N/A
Acute:
Chronic
0 0
WA
Acute:
Chronic:
2325&Fa2012 rp�
Page 2 012

Carolina Beach WWTP
NC0023256
Qw (MGD) =
1Q10S (cfs)=
7Q10S (cfs) =
7Q1OW (cfs)=
30Q2 (cfs) =
Avg. Stream Flow, QA (cfs) =
Receiving Stream:
REASONABLE POTENTIAL ANALYSIS
3.00
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Tidal, IWC = 100%
Cape Fear River
WWTP/WTP. Class: 11
IWC @ 1 Q 1 OS = 100.00%
IWC @ 7Q 1 OS = 100.00%
IWC @ 7Q I OW = 100.00%
IWC @ 30Q2 = 100.00%
IWC @ QA = 100.00%
Stream Class: SC
Outfall 001
Qw = 3 IVIGD
CHRONIC TEST CONCENTRATION = DEFAULT %
=90%
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
—I
a
co
H
z
POTENTIAL RESULTS
NC WQS / Applied �/2 FAV /
Chronic Standard Acute .
Max Pred
11 # Det. Cw Allowable Cw
Arsenic
C
10 HH(Qavg)
ug/L
4 1
Note: n < 9
23.7
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 10.0
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _
RPA for Limited Dataset (n<8 samples) - apply
Quarterly Monitoring
Copper (AL)
NC
3 SW(7Q I Os) 5.8
ug/L
22 16
48.0
Acute: 5.8
_ _ _ _ _ _ _ _ _ _ _
Chronic: 3.0
22 value(s) > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
RPA for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring in conjunction with TOX Test
Lead
NC
25 SW(7Q10s) 221
ug/L
4 1
Note: n < 9
Limited data set
99.54
Default C.V.
Acute: 221.0
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 25.0
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _
RPA for Limited Dataset (n<8 samples) - apply
Quarterly Monitoring
Mercury
NC
25 SW)7Q10s)
0.5
ng/L
4 1
Note: n < 9
Limited data set
2.7
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _ _ _
Chronic 25
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50%0 ofAllowable Cw
- No Monitoring required
Nickel
NC
8.3 SW(7Q 10s) 75
,
ug/L
4 1
Note: n < 9
Limited data set
Default C.V.
Acute: 75.0
_ _ _ _
Chronic: 8.3
2 value(s) > Allowable Cw
RPA for Limited Dataset (n<8 samples) - apply
Quarterly Monitoring
Selenium
NC
71 SW(7Q 10s)
ug/L
4 1
Note: n < 12
Limited data set
23.7
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _
Chronic: 71.0
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max < 50% of Allowable Cw
- No Monitoring required
Zinc (AL)
NC
86 SW(7Q1 Os) 95
ug/L
22 22
57.64
Acute: 95
_ _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 86
No value > Allowable Cw .
_ _ _ _ _ _ _ _
No RPA, Predicted Max >_ 50% of Allowable
Cw - apply Quarterly Monitoring
Bromoform
NC
140 HH(7Q10s)
µg/L
4 4
Note: n <_ 9
Limited data set
110.0
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 140
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _
No RPA, Predicted Max >_ 50% ofAllowable
Cw = apply Quarterly Monitoring
Chlorodlbromomethane
NC
13 HH(7Q10s)
µg/L
4 4
Note: n <_ 9
Limited data set
1 430.392
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _
Chronic: 13
4 value(s) > Allowable Cw
_ _ _ _ _ _ _ _
RPA for Limited Dataset (n<8) but 2 values >
Allowable Cw - apply Monthly Monitoring with
Chloroform
NC
170 HH(7Q10s)
µg/L
4 4
Note: n < 9
Limited data sel
109.494
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 170
No value > Allowable Cw
_ _ _ _ _ _ _
No RPA, Predicted Max >_ 50% of Allowable
Cw apply Quarterly Monitoring
Page 1 of 2
23256rpa2012,rpa
6/7/2012

Carolina Beach WWTP
NC0023256
REASONABLE POTENTIAL ANALYSIS
Outfall 001
Qw=3 MGD
Dichlorobromomethane
•
NC
17 HH(7Q10s)
pg/L
4 4
Note: n < 9
Limited data set
1 284.4
Default C.V.
Acute: NO WQS
_ ___________---
Chronic: 17
2 value(s) > Allowable Cw
_ _ _ _ _ --_ _ _ _ _____
RPA for Limited Dataset (n<8) but 2 values >
Allowable Cw - apply Monthly Monitoring with
.
0 0
N/A
Acute:
- - -----------------
Chronic:
-------------------
0 0
N/A
Acute:
- ---------------------------------------•
Chronic:
0 0
N/A
Acute:
- - ---------------------------------------
Chronic:
0 0
N/A
Acute:
- - -------------------------------------
Chronic:
0 0
N/A
Acute:
- ---------------------------------------•
Chronic:
23256rpa2012,rpa
Page 2 of 2 6/7/2012

Reduction in Frequency Evalaution
Facility: Carolina Beach
Permit No. NC0023256
Review period (last 3 yrs) Jan 2011 to Dec 2013
Compliance Review:
Not currently under SOS
OK
Not on EPA Quarterly
noncompliance report
OK
No more than one civil penalty
assessment for each parameter
B0D
TSS
Ammonia
Enterococci
OK
OK
OK
OK
Criminal Review
Facility or employees convicted of
CWA violations
Data Review
Weekly
average
limit
Monthly
average
limit
50% MA
3-yr mean
(geo mean
for FC)
< 50%?
200% MA
# daily
samples
>200%
200%
<15? WA
# daily
samples
>200%
< 20?
# of non -
monthly
limit
violations
< 2?
Reduce
Monitoring
Frequency?
CBOD (summer)
7.5
5
2.5
2.1
OK
10
0
OK 0
OK
Y
CBOD (winter)
15
10
5.0
2.1
OK
20
0
OK 0
OK
Y
TSS
45
30
15
1.7
OK
60
0
OK 0
OK
Y
Ammonia (summer)
6
2
1
0.6
OK
4
4
OK 0
OK
Y
Ammonia (winter)
12
4
2
0.5
OK
8
2
OK 0
OK
Y
Fecal Coliform
276
35
17.5
3.5
OK
552 5 OK 0
OK
_
N

Nowell, Jackie
From: Hunkele, Dean
Sent: Monday, November 07, 2011 5:02 PM
To: Nowell, Jackie
Subject: NC0023256 Carolina Beach renewal staff report
Importance: High
Jackie,
Please amend the system description per below. New stuff in Red.
dual secondary clarifiers
three traveling bridge tertiary filters
RAS/WAS pump room
Aerated, synthetically -lined 1.25 MGD Emergency Surge Basin with manual bar screen & pump station with dual pumps
gas dechlorination
dual 0.75 MGD aeration basins
1.5 MGD 0-ditch
1 Would like to see a Special Condition requiring them to address their sludge storage issues prior to next expiration of the
permit. Perhaps submit an A-to-C application at least 12 months prior to permit expiration. Method of storage at the
facility needs to be addressed as the two old primary settling basins from when they had lagoon treatment are being
used to store digested sludge until hauled away. These are open-air and exposed to rainfall with only one portable mixer
available that appears insufficient to keep mixed. One basin was basically clean, but the other was full of solids and
weeds. A facility of this size should be looking at a sludge thickener, sludge press, or similar solids refinement system.
Need a condition requiring maintaining at least 1-foot of freeboard in surge basin and require weekly readings from a
staff gauge that is surveyed to the lowest point of elevation.
Copper & Zinc sampling should be in the same month as toxicity and on same day since they are a toxicant of potential
concern.
Dean Hunkele, Senior Environmental Specialist
Wilmington Regional Office
Division of Water Quality, Surface Water Protection Section
http://www.ncwatero u a l ity.o rg/
WaterQualit
Y
Direct Phone: [phone]
Main Phone: [phone]
Fax: [phone]
1

Address: 127 Cardinal Drive Ext
Wilmington, NC 28405-3845
To report a SSO, WWTP Bypass, or Spill after hours, holidays, or weekends
call The NC Division of Emergency Management @ 1-800-858-0368
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties.
2

c o(1thN 1
Ambient Monitoring System Station Summaries
NCDENR, Division of Water Quality
Basinwide Assessment Report
Location: CAPE FEAR RIV AT CM 23
Station #: B9910000 Hydrologic Unit Code: 03030005
Latitude: 33.94560 Longitude: -77.96958 Stream class: SA HQW
Agency: LCFRP NC stream index: 18-(87.5)
Time period: 01/06/2004 to 12/09/2008
# # Results not meeting EL Percentiles
results ND EL # % %Conf Min loth 25th 50th 75th 90th Max
Field
D.O. (mg/L) 82 0 <5 1 1.2 4.8 5.7 6.2 7 8.4 9.8 11.2
pH (SU) 82 0 <6.8 0 0 7.3 7.7 7.8 7.9 8 8.1 8.2
82 0 >8.5 0 0 7.3 7.7 7.8 7.9 8 8.1 8.2
Spec. conductance 82 0 N/A 11570 20692 30681 38600 44985 49356 53112
(umhos/cm at 25°C)
Water Temperature (°C) 82 0 >32 0 0 7.5 11.8 15.3 24.8 27.8 29.3 30.5
Other
TSS (mg/L) 60 0 N/A 4 6 7 9 13 20 38
Nutrients (mg/L)
NH3 as N 60 18 N/A 0.01 0.01 0.01 0.02 0.04 0.06 0.13
NO2 + NO3 as N 60 11 N/A 0.01 0.02 0.04 0.11 0.22 0.28 0.46
TKN as N 60 1 N/A 0.1 0.2 0.3 0.44 0.69 0.98 2.2
Total Phosphorus 60 13 N/A 0.01 0.01 0.02 0.04 0.05 0.07 0.31
Metals (ug/L)
Aluminum, total (Al) 19 0 N/A 41 110 182 268 405 738 1050
Arsenic, total (As) 19 15 >10 4 21.1 96.5 1 10 10 10 10 22 24
Cadmium, total (Cd) 19 19 >5 0 0 1 2 2 2 2 2 2
Chromium, total (Cr) 19 19 >20 0 0 5 25 25 25 25 25 25
Copper, total (Cu) 19 9 >3 10 52.6 100 2 2 2 4 9 14 71
Iron, total (Fe) 19 0 N/A 204 241 262 294 410 510 573
Lead, total (Pb) 19 19 >25 0 0 3 10 10 10 10 10 10
Mercury, total (Hg) 19 19 >0.025 0 0 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Nickel, total (Ni) 19 12 >8.3 7 36.8 100 5 10 10 10 13 18 20
Zinc, total (Zn) 19 14 >86 0 0 8 10 10 10 10 13 14
Fecal Coliform Screening(#/100mL)
# results: Geamean # > 400: %> 400: %Conf: Median # > 43 % > 43 %Conf
60 4 0 0 4 2 3
Kev:
# result: number of observations
# ND: number of observations reported to be below detection level (non -detect)
EL: Evaluation Level; applicable numeric or narrative water quality standard or action level
Results not meeting EL: number and percentages of observations not meeting evaluation level
%Conf : States the percent statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Coliform)
Stations with Tess than 10 results for a given parameter were not evaluated for statistical confidence
NCDENR, Division of Water Quality
Ambient Monitoring System Report
Cape Fear River Basin - August 2009
AMS-245

Ambient Monitoring System Station Summaries
NCDENR, Division of Water Quality
Basinvide Assessment Report
Location: CAPE FEAR RIV AT CM 35
Station #: B9850100
Latitude: 34.03348 Longitude: -77.93702
Agency: LCFRP
Time period: 01/06/2004 to 12/09/2008
Hydrologic Unit Code: 03030005
Stream class: SC
NC stream index: 18-(71)
# # Results not meeting EL Percentiles
results ND EL # % %Conf Min 10th 25th 50th 75th 90th Max
Field
D.O. (mg/L) 83 0 <5 6 7.2 4.1 5.3 6.1 7.1 8.5 9.7 11.3
pH (SU) 83 0 <6.8 0 0 6.9 7.4 7.6 7.8 7.9 8 8.2
83 0 >8,5 0 0 6.9 7.4 7.6 7.8 7.9 8 8.2
Spec. conductance 83 0 N/A 3269 9452 17644 27563 35738 42022 49443
(umhos/cm at 25°C)
Water Temperature (°C) 83 0 >32 0 0 7.5 11.8 15.4 24.6 27.8 29.5 31.2
Other
TSS (mg/L) 60 0 N/A 4 5.1 7.2 9 12.8 18 22
Nutrients (mg/L)
NH3 as N 60 12 N/A 0.01 0.01 0.02 0.04 0.06 0.1 0.12
NO2 + NO3 as N 60 4 N/A 0.01 0.03 0.07 0.19 0.3 0.41 0.46
TKN as N 60 2 N/A 0.1 0.2 0.3 0.53 0.7 0.84 1.8
Total Phosphorus 60 1 N/A 0.01 0.03 0.05 0.06 0.07 0.09 0.12
Metals (ug/L)
Aluminum, total (Al) 19 0 N/A 38 74 194 297 464 687 1600
Arsenic, total (As) 19 17 >10 2 10.5 70.5 1 10 10 10 10 14 15
Cadmium, total (Cd) 19 19 >5 0 0 1 2 2 2 2 2 2
Chromium, total (Cr) 19 19 >20 0 0 5 25 25 25 25 25 25
Copper, total (Cu) 19 10 >3 9 47.4 100 2 2 2 2 7 10 11
Iron, total (Fe) 19 0 N/A 225 229 285 315 491 940 1550
Lead, total (Pb) 19 19 >25 0 0 3 10 10 10 10 10 10
Mercury, total (Hg) 19 19 >0.025 0 0 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Nickel, total (Ni) 19 15 >8.3 4 2I.1 96.5 5 10 10 10 10 16 16
Zinc, total (Zn) 19 16 >86 0 0 10 10 10 10 10 15 17
Fecal Coliform Screening(#/100mL)
# results: Geomean # > 400: % > 400: %Conf:
60 8 i 2
Key:
# result: number of observations
# ND: number of observations reported to be below detection level (non -detect)
EL: Evaluation Level; applicable numeric or narrative water quality standard or action level
Results not meeting EL: number and percentages of observations not meeting evaluation level
%Conf : States the percent statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Coliform)
Stations with less than 10 results for a given parameter were not evaluated for statistical confidence
NCDENR, Division of Water Quality
Ambient Monitoring System Report
Cape Fear River Basin - August 2009
AMS-244

Town of Caroiina Beach NORTH CAROLINA • USA . 25428
1121 N. Lake Park Blvd., Carolina Beach, NC 28428
Phone: (91T, 458--2994 Email:: s.oi�eeesZcaro;:naiacach.ai•c:
June 27, 2011
Mrs. Dina Sprinkle
NCDENR/DWQ/NPDES
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Enclosed are the completed forms of the NPDES Form 2A Application for the Town of Carolina Beach
Wastewater Treatment Facility, Permit Number NC0023256, and a narrative description of the sludge
management plan for the facility. Our current discharge permit expires on December 31, 2011, and we are
requesting renewal of our discharge permit. There is only one change at the facility since issuance of the last
permit worth noting. A 200' x 250' equalization basin has been under construction inside the footprint of the
old equalization basin, and we anticipate that an official start-up will occur by August. We have been updating
the progress of the construction project with DWQ-Wilmington Regional Office. We are requesting that the
equalization basin be included in our new discharge permit.
If you have any questions concerning this application, please contact me at [phone].
Sincerely,
a,Ar
T' othy W. Owens
Town Manager

Town of Carolina Beach NORTH CAROLINA • USA • 28428
1121 N. Lake Park Blvd., Carolina Beach, NC 28428
Phone: pia, 458-2994 &nail:tisit.ue'acasiii)eak.oiiiaauetich.org
June 27, 2011
Mrs. Dina Sprinkle
NCDENR/DWQ/NPDES
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
*
The intent of this letter is to provide a narrative description of the sludge management plan for the Town of
Carolina Beach WWTP. The WWTP has one aerobic digester and two aerobic sludge storage basins for the
storage of biosolids produced by the facility. We have the ability to settle the sludge in all three storage units
and decant supernate back to the WWTP headworks. When we have an adequate volume of thickened sludge in
the sludge storage basins, we set up a lime stabilization and land application of liquid biosolids with our
contracted hauler, Syrj3gro. We have permitted fields in Columbus County designated for land application.
Since October, 2006, a total of 4,016,500 gallons of lime -stabilized liquid biosolids from the Town of Carolina
Beach WWTP have been land applied.
If you have any questions concerning this narrative, please contact me at [phone].
Sincerely,
Timothl W. Owens
Town Manager

FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Seach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
REINIEWAL
RIVER BASIN:
Cape Feat. River Bas'ii:
FORM
2A NPDES FORM 2A APPLICATION OVERVIEW
NPnFS
APPLICATION OVERVIEW
Form 2A has been -developed -in -a -modular format and consists -of -a -"Basic Application lnfarmmtiatl"packet
and a "Supplemental Application Information" packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
Af'PLIC T:� 4 iNfO MATZO N:
. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B Additional Application Information for Applicants with a Design Flow z 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions 6.1 through 6.6.
C Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters.ofthe United States.and.meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data): ' "s
1. Has a design flow rate greater than or equal to 1mgd, f j "� id I
1��
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
Industrial User Discharges and RCRAICERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). Sills are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
c. Is designated as an SIU by the control authority.
Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer
Systems).
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 1 of 22

,FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
RENEWAL
RIVER BASIN:
Cape Fear River Basin
BASIC . APPLICATION_INFORMAT1ON
PART A BASIC APR-ICA-nol1! INFORMATION FOR ALL APPLICANTS:
All Treatment works must complete questions A.1 through A.B of this Basic Application Infomsattion Packet
A.1. Facility Infommtion.
FaaTity Name Town of Carolina Beach Wastewater Treatment Facility
Mailing Address 1121 N. Lake Park Blvd.
Carolina Beach, NC 28428
Contact Person Wiiiiam Raymond
Tide Wastewater Treatment Facility Superintendent
Telephone Number [phone]
Fealty Address 404 S. Dow Rd.
(not P.O. Box) Carolina Beach. NC 28428
A.2. Applicant Information. Ifthe applicant is efferent from the above, provide the following:
Applicant Name
Matting Address •
Contact Person
Title
Telephone Number ! 1
Is the applicant the owner or operator (or both) of the treatment works?
❑ owner IN operator
Indicate whether correspondence regarding this permit should be directed
to the facility or the applicant.
environmental permits that have been issued to the treatment works
PSD
❑ malty ,I4 applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing
(include sued permits).
NPDES NC0023256
UiC Other WQ0007728
RCRA Other WQ0019336
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and. if known, provide information on the type of collection system (combined vs. separate) and fts ownership (murtidpai. private. etc.).
Nance • Population Served Type of Collection System Ownership
Town of Carolina Beach 5.772 Separate Carolina Beach
Town of Kure Beach 2,406 Separate Kure Beach
Total population served 8.178
EPA Fonn 3610-2A (Rev. 1-99). Replaces EPA forms 7550.6 & 7550-22
Page 2 o122

I FACILITY NAME AND PERMIT NUMBER
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PEST ACTION REQUESTED:
RENEWAL
RIVER BASIN:
Cape Fear River Basin
A.S. Indian Country.
a. !s the treatment worts located in Indian Cormtri?
❑ Yes Q No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) tndian Country?
❑ Yes © No
A.S. Flow. Indicate the design flow rate of the treatment plant (Le., the wastewater flow rate that the plant was bun to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12th month of'lhs year occurring no more than dna months prior to this application submittal.
a. Design flow rate 3.0 mgd
Two Years Ano
b. Annual average daily flow rate 1.368
Last Year This Year
1.513 1.394
c. Maximum daily flow rate 2.152 2.447 3.640
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check ail that apply. Also estimate the percent
contribution (by miles) of each.
© Separate sanitary sewer 100 %
O Combined storm and sanitary sewer
A.8. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? Q Yes ❑ No
If yes, list how many of each of the following types of dscharge pouts the treatment works uses:
i. Discharges dilated effluent
U. Discharges of untreated or partially treated effluent
M. Combined sewer overflow points
iv. Constructed emergency overflows (prior to the headworks)
v. Other
b. Does the treatment works discharge effluent to basins. ponds, or otter surface impoundments
that do not have outiels for discharge to waters of the U.S.? 0 Yes
If yes, provide the following for each surface impoundment
Location:
© No
Annual average daily volume discharge to surface impoundment(s) mgd
Is discharge 0 continuous or 0 Intermittent?
c. Does the treatment works land -apply treated wastewater? Q Yes 0 No
If yes, provide the following for each land application site:
Location: Town of Carolina Beach Wastewater Treatment Facility
Number of acres: 6.7
Annual average daily volume applied to site'.
0.005 mgd
Is land application 0 continuous or Q intermittent?
d. Does the treabrnent works discha rge or transport treated or untreated wastewater to another
treatment works?
❑ Yes Q No
EPA Form 3510-2A (Rev. 1-99). Maces EPA forms7550-6 & 7550-22. Page 3 of 22

FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PEPJET ACTIQ!3 REQUESTED:
RENEWAL
RIVER PASM!d:
Cape Fear River Basin
if yes. describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g.. tank tnrdc. t).
If transport is by a party oilierthan the appftcant, provide:
Transporter Name
Ma is ag Address
Contact Person
Title
Telephone Number ( )
For each treatment works that receives this dlsdrame, provide the following:
Name
Mailing Address
Contact Person
Title
Telephone Number ( )
tf known. provide the NPDES permit number of the treatrnent works that receives this dscharge
Provide the average daily flow rate from the treatment works into the receiving fealty. mgd
e. Does the treatment works disdtarge or dispose of its wastewater in a manner not included
In A8. through AB.d above (e.g.. underground percolation, well injection) 0 Yes ® No
If yes, provide the following for each tremosal method:
Description of method (including location and size of site(s) if applicable):
Annual daily volume disposed by this method:
Is disposal through this method 0 continuous or 0 intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA farms 7550418 7550-22. Page 4 of 22

FACILITY NAME AND PERMIT NUMBER
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
RENEWAL
RIVER BASIN:
Cape Fear River Basin
WASTEWATER DISCHARGES:
if you answered "Yee" to arrestion A..e a, complete aaestions A.9 tlxouah A.12 once for ;c.,ct! outran (Including bypass points) through
which effluent is discharged. Do not Include Information on combined sewer overflows In this section. if you answered "No" to question
go to Part B, "Additional Application Information for Applicants with a Design Flow Grater than or Equal to 0.1 mgd."
A.9. Deaur ption of Outfdll.
a. Outfall number 001
b. Location Town of Carolina teach 28 428
(City ortown. 1applicable) (Zp Code)
Mar: Hanover Art`
(may) (State)
34 Dea. North, 01 Min.. 51 Sec. 77 Deo. West, 55 Min., 10 Sec.
(Latitude) (fig)
c. Distance from shore (if applicable) 370 ft.
d. Depth below surface (if applicable) 1.17 tt.
e. Average daily flow rate 1.359 mgd
f. Does this outran have either an iidermnt or a perk discharge? 0 Yes ® No (go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge mans:
Average duration of each discharge:
Average flow per discharge: mgd
Months in which discharge occurs:
g. Is outfall equipped with a diffuser? 0 Yes © No
A.10. Description of Receiving Waters.
a. Name of receiving water Cape Fear River
b. Name of watershed (if known) Cape Fear River Subbasin 17. Local Watershed 50010
United States Soil Conservation Service 14-digit watershed code (if known):
03030005050010
c. Name of State Management/River Basin (if known): Cape Fear River Basin
United States Geological Survey 8-digit hydrologic cataloging unit code (if knowrn): 03030005
d. Critical low flow of receiving stream (if applicable)
acute cfs chronic cfs
e. Total hardness of receiving stream at akical low flow (if applicable): mgli of CaCO3
EPA Fonn 3510-2A (Rev. 1-99). Replaces EPA forms 7550-8 & 7550-22.
Page 5 of 22

FACILITY NAME AND PERMIT NUMBER:
-i own of C-arolina Beach VVasiewaior Treatment
Facility, NC002�2o6
PERMIT ACTION REQUESTED:
I:Ei'� -`���V L
RIVER BASIN:
�. EIpC3a FGat' ivrtc IliEISl.1
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply_
Primary ^i 1 econiary
I] Advanced 0 Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal 98.5 (BOD,) %
Design SS removal 99 %
Design P removal 35
Design N removal i6'.: i35% as 6.i 31 %
Other %
c. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
Chiorin_fion
If disinfection is by chlorination is dechlorination used for this outfall? 0 Yes ❑ No
Does the treatment plant have post aeration? CI Yes PI No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for amalytes not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart
Outfall number. 301
PARAMETER
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
Value
Units
Value
Units
Number of Samples
pH (Minimum)
6.3
s.u.
[_ -r, ., s, % it y
[/.'
pH (Maximum)
7.7
s.u.
s `
Flow Rate
3.640
IVIGO
1.35J
MGM
1,643
Temperature (Winter)
23.9
° CelsiS is
17.0
°Celsius
483
Temperature (Summer)
30.6
°Celsius
25„5
° Ceis'us
638
* For pH please report a minimum and a maximum daily value
POLLUTANT
MAXIMUM DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
MUMDL
Conc.
Units
Conc.
Units
Number of
Samples
METHOD
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
BOD5
.i.._
mg/L
1.2
i:iglL
1,119
SIVi 5210 l3
.,,
DEMAND (Report one)
CBOD5
FECAL COLIFORM
> ; 7_:,
C =!' /
100,mL
2
G,=U /
100mL
165
S1Vi 9222 D
TOTAL SUSPENDED SOLIDS (TSS)
5.2
mg/L
0.6
mg/L
1,119
SP9264013
1.0
END OF PART A.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 6 of 22

`FACILITY NAME AND PERMIT NUMBEttr
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
RENEWAL
RIVER BASIN:
Cape Fear River Basin
BASIC APPLICATION INFORMATION
PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 NMI) (100,000 gallons per day).
All applicants with a design flow rate z 0.1 mgd must answer questions 11.1 through B.6. NI others go to Part C (Certification).
BA Inflow and.ariprotnn_Fnffraate ft avemga w npIr of at/nns per day that flnw Mtn Ma frp nt ork fmm inflow andlnr Infiltration
100.000 gpd
locations during [he current permit period. The town plans to
Briefly explain any steps underway or planned to minimize inflow and Infiltration.
The town has replaced sewer pine in several recurrir ru i & i
smoke test and camera inspect the collection area that feeds one particular lift station that is suspected to have inflow
issues. The town also clans to inspect sewer pipe this off season in areas scheduled for water pipe replacement. The
town is also considering another I & I study in coordination with our contract engineering firm.
B.2. Topographic Map. Attach to this application a topographic map of the area edending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following Information. (You may submit more than one map if one map does not show the entire
area.)
a. The area surrounding the treatment plant, Including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
heated wastewater is discharged from the treatment plant Include (=falls from bypass piping, tf applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within % mile of the property boundaries of the treatment
works, and 2) listed in public record or otherwise known to the applicant
e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed.
f. If the treatment works receives waste that is dasslred as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, ran,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
B.3. Process Flow Dram or Schenatic. Provide a diagram showing the processes of the treatment plant, including an bypass piping and all
backup power sources or redunancy in the system. Also provide a water balance showing all treabnert units, including disinfection (e.g.,
chlorination and dechlorinaiion). The water balance must show daily average flow rates at iniitsent and discharge points and approximate daily flow
rates between treatment unit& lndude a brief narrative won of the diagram.
B.4. OpeuatlonlMaiatenance Performed by Contract or(s).
anyAre op rationale or maintenance aspects (la dt wastewater treatment and effluent quality) of the treatment works the responsibility of a
contractor?❑ Yes
If yes, Ust the name, address, telephone number, and status of each contractor and describe the contractor's responslbulges (attach additional
pages if necessary).
Name:
Malting Address:
Telephone Number. ( )
Responsibilities of Contractor.
B.5. Scheduled Improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question B.6.)
a. List the outran number (assigned in question A.9) for each outran that is covered by flits implementation schedule.
b. Indkrate whether the planned improvements or implementation schedule are required by local, State, or Federal agencles.
❑ Yes ❑ No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA fortis 7550-6 & 7550-22.
Page 7 of 22

I FACIUTY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERLETACTION REQUESTED:
RENEWAL
RIVER WON: . I
Cape Fear River Basin
c. lithe answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if appficabie).
l
d. Provide dates imposed by any comprranoe schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For anprovements planned independently of tonal, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DD/YYVY MMIDD/YYYY
- Begin Construction / / / 1
- End Construction / / / /
- Begin Discharge I / t t
- Attain Operational Level / / / /
e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? 0 Yes ■ No
Desaibe briefly:
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the Indicated
effluent testing required by the permitting authority for each outfit! throunh which effluent Is dischamed. Do not Include infonnation
on combine sewer overflows In this section. All Information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. to addition, this data must comply with QAIQC requirements of 40 CFR Part 136 and other appropriate
QAIQC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on-latf years old.
outfall Number 001
POLLUTANT
MAXIMUM DAILY
DISCHARGEMETHOD
AVERAGE DAILY DISCHARGE
ANALYTICAL
fAUMDL
Conc.
Units
Conc.
Units
Number of
Samptes
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
8.6
mgiL
0.2
mgiL
1,123
SM 4500-NH3 D
0.1
CHLORINE (TOTAL
RESIDUAL. TRC) •
49
µg/L
0
µg/L
1,121
HACH 100700PD
10
DISSOLVED OXYGEN
10.59
mg/L
7.10
mgiL
1,121
SM 4500-0 G
0.10
TOTAL K.JELDAHL
NITROGEN (TKN)
3.1
mg/L
1.2
mgIL
5
EPA 351.2
0.5
NITRATE PLUS NITRITE
NITROGEN
33.9
mg/L
17.57
mg/L
5
EPA 353.2
0.02
OIL and GREASE
<5
mgiL
<5
mg/L
5
EPA 1664
5
PHOSPHORUS (Total)
4.91
mg/L
2.72
mg/L
59
BM 4500 P F
0.01
TOTAL DISSOLVED SOLIDS
(ps)
1092
mgiL
939.4
mgiL
5
EPA 160.1
2.5
OTHER ENTEROCOCCI
TOTAL NITROGEN
CONDUCTIVITY
>2420
31.1
4,430
MPN
mgiL
mgiL
4
17.9
1,651
MPN
mg/L.
mgiL
961
54
1,121
ENTEROLERT
EPA 353.3
S.M. 2510 B
1
0.1
1
END OF PART B.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forts 7550.6 & 7550-22.
Page 8 of 22

1 FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
RIVER BASIN: I
Cape Fear River Basin
PERMIT ACTION REQUESTED:
RENEWAL.
BASIC APPLICATION INFORMATION
PART C. CERTIFICATION
All applicants must complete the Certification Section. Re ferto instruction to determine who is an officer forthe purposes of this
certification. All applicants must complete all applicable sections of Form 2A, as explained In the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confine that they have reviewed
indicate which parts of Form 2A you have completed and
© Basic Application Information packet Supplemental
© Part D
am submitting:
Application information packet
(Expanded Effluent Testing Data)
(Tory Testing: Biomonloring Data)
(industrial User Discharges and RCRA/CERCLA Wastes)
(Combined Sewer Systems)
Part E
■ Part F
• Part G
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTLRCATION.
I certify under penalty of law that this doamment and of attachments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information submfted. Based on my inquiry of the person or persons who
manage the system or those persons directly responsible for gathering the information, the Information is, to the best of my knowledge and belief, true,
accurate. and complete. I am aware that then: are significant penalties for submtiting false information, including the possibitty of fine and imprisonment
for knowing violations.
Name and offldal title Timoth . Owens, Town Manager
Signature Apt. I
Telephone number (91 0) 458-2994
Date signed ItMe 27 20/l
Upon request of the permitting authority. you must submit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate pennitting requiremerds.
SEND COMPLETED FORMS TO:
NCDENRI DWQ
Attn: NPDES Unit
1617 Mall Service Center
Raleigh, North Carolina 27699-1617
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 9 of 22

I FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
RENEWAL
RIVER BASIN: I
Cape Fear River Basin
SUPPLEMENTAL APPLICATION .INFORNIAT1ON
i PART D. EXPANDED EFFLUENT TESTING DATA
Refer to the directions on tho cover page to detenribie whether this section applies to the treatment works. .
Effluent Testing: 1.0 mgd
and Pretreabnent Waits. If the treatment works
effluent testing information and any other information
not include information on combined sewer overflows
using 40 CFR Part 136 methods. In addition, these
for standard methods for analyses not
pollutants not specifically lid In this form. At a
than four and ore -tail years old_
(Complete once for each outfall
has a design flow greater than or equal to 1.0 mgd or it has (or is required
pollutants. Provide the Indicated
effluent is dischamed. Do
required by the permitting au thortly
in this section. All information reported must
data must comply with QA1QC requirements
addressed by 40 CFR Part 136. Indicate in
minknum. effluent Ling data must he based
dischargIng effluent to waters of the United
far each outfaft jhrouah which
be based on data collected
of 40 CFR Part 136 and
the blank rows provided below
on at least three pollaNnt
States.)
through analyses conducted
other appropriate QA/QC requirements
any data you may have on
scans and must be no more
outfali nw nber. 001
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
•
MLIMDL
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
METHOD
METALS (TOTAL RECOVERABLE), CYANIDE, PHENOLS, AND HARDNESS.
ANTIMONY
<0.010
mglL
<0.010
mg/L
6
EPA 200.8
0.010
ARSENIC
<0.010
mglL
<0.010
mglL
5
EPA 200.8
0.010
BERYLLIUM
<0.010
mglL
<0.010
mglL
5
EPA 200.8
0.010
CADMIUM
<0.010
mglL
<0.010
mglL
5
EPA 200.8
0.010
CHROMIUM
<0.010
mglL
<0.010
mglL
5
EPA 200.8
0.010
COPPER
0.033
mglL
0.013
mglL
22 .
EPA 200.8
0.010
LEAD
0.021
mglL
<0.010
mglL
5
EPA 200.8
0.010
MERCURY ,
0.577
nglL
<0.500
ng!L
5
EPA 1631e
0.500
NICKEL
<0.010
mg!L
<0.010
mglL
5
EPA 200.8
0.010
SELENIUM
<0.010
mglL
<0.010
mglL
5
EPA 200.8
0.010
SILVER
<0.010
mglL
<0.010
mglL
5
EPA 200.8
0.010
THALLIUM
<0.010
mglL
<0.010
mglL
5
EPA 200.8
0.010
ZINC
0.053
mglL
0.035
mglL
22
EPA 200.8
0.010
CYANIDE
<0.005
mglL
<0.005
mglL
7
EPA 335.4
0.005
TOTAL PHENOLIC
COMPOUNDS
0.008
mglL
<0.004
mglL
5
EPA 420.1
0.004
HARDNESS (as CaCO3)
323
mglL
290
mg/L
5
WI 2340 C
5
Use this space Ora separate sheet) to provide Information on other metals requested by the permit writer
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550.6 & 7550-22.
Page 10 of 22

FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
RENEWAL I
! RIVER BASIN:
Cape Fear Rader Basin
Outfall number. 001 (Complete once for each outfail discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
POLLUTANT
Conc.
Units
Mass
I
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
MLlMDL
VOLATILE ORGANIC COMPOUNDS
ACROLEIN
BQL
µgIL
BQL
µg/L
5
EPA 624
5
ACRYLONITRILE
BQL
µg/L
BQL
µgIL
5
EPA 624
5
BENZENE
BQL
µg/L
BQL
µgIL
5
EPA 624
0.5
BROMOFORM
31.5
µgIL
20.0
µgIL
5
EPA 624
0.5
CARBON
TETRACHLORIDE
BQL
µg/L
SQL
µg/L
6
EPA 624
0.5
CHLOROBENZENE
BQL
µgIL
BQL
µgIL
5
EPA 624
0.5
CHLORODIBROMO-
METHANE
90.8
µgIL
40.4
pg/L
5
EPA 624
0.5
CHLOROETHANE
BQL
µg/L
BQL
µgIL
5
EPA 624
0.5
2-CHLOROETHYLVINYL
ETHER
BQL
AWL
SQL
µgIL
5
EPA 624
0.6
CHLOROFORM
23.1
µgIL
7.7
µg/L
5
EPA 624
0.5
HLOROBROMO-
METHANE
ME
60.0
µgIL
24.2
µg/L
5
EPA 624
0.5
1,1-DICHLOROETHANE
BQL
µg/L
BQL
µg/L
5
EPA 624
0.5
1,2-0ICHLOROETHANE
BQL
µgIL
BQL
µgll.
5
EPA 624
0.5
EHYS-2 DICHLORO-
ETHYLENNE
BQL
µgIL
BQL
µ$ /L
5
EPA 624
0.5
1,1-DICHLORO-
ETHYLENEBQL
µgIL
SQL
µgIL
5
EPA 624
0.5
1.2-DICHLOROPROPANE
BQL
µg/L
BQL
µgIL
5
EPA 624
0.5
1,3-DICHLORO-
PROPYLENE
BQL
µgIL
BQL
µg/L
5
EPA 624
0.5
ETHYLBENZENE
BQL
µgIL
BQL
µgIL
5
EPA 624
0.5
METHYL BROMIDE
BQL
µgIL
SQL
µgIL
5
EPA 624
0.5
METHYL CHLORIDE
BQL
µgIL
SQL
µgIL
5
EPA 624
0.5
METHYLENE CHLORIDE
BQL
µg/L
BQL
µgIL
5
EPA 624
0.5
1 T A
CHLOROETHANE
HLO
BQL
µgIL
BQL
µgIL
5
EPA 624
0.5
TETRACHLORO-
ETHYLENE
BQL
µgIL
BQL
µgIL
5
EPA 624
0.5
TOLUENE
BQL
µgIL
BQL
µgIL
5
EPA 624
0.5
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550.E & 7550 22
Page 11 of 22

.•
FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED: I RIVER BASIN:
RENEWAL 1 Cape Fear River Basin
outfa[I ntanber: 001
(Complete once for each outfatl discharging effluent to waters of the United States.)
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
Conc.
Units
Mass
Units
Conn.
r r Number
Units Mass Units of
Samples
ANALYTICAL
METHOD
MUMDL
1.1,1-
TRICI ULOROCTHANE
BQL
ao/L
BQL
µg/L
5
EPA R24
ns
1,1,2-
TRICHLOROETHANE
BQL
µgIL
BQL
µgiL
5
EPA 624
0.6
TRICHLOROETHY'LENE
SQL
µg/L
BQL
µgiL
5
EPA 624
0.5
VINYL CHLORIDE
BQL
µg/L
BQL
µgiL
5
EPA 624
0.5
Use this space (or a separate sheet) to provide info mation on other volatile organic compounds requested by the permit writer
ACID -EXTRACTABLE COMPOUNDS
P-CHLORO-M-CRESOL
BQL
µgiL
t3QL
5
EPA 625
5
2-CHLOROPHENOL
BQL
µgiL
BQL
µgIL
5
EPA 625
c
2,4-DICHLOROPHENOL
BQL
µgiL
BQL
µgIL
5
EPA 625
5
2,4-DIMETHYLPHENOL
BQL
µg/L
BQL
µgIL
5
EPA 625
5
4.6-DINITRO-O-CRESOL
BQL
µgIL
BQL
µg/L
5
EPA 625
25
2.4-DINITROPHENOL
BQL
µg/L
BQL
µgIL
5
EPA 625
25
2-NITROPHENOL
BQL
µgIL
BQL
µgiL
5
EPA 625
25
4-NITROPHENOL
BQL
µgiL
BQL
µg/L
5
EPA 625
25
PENTACHLOROPHENOL
BQL
µgIL
BQL
µgiL
5
EPA 625
25
PHENOL
BQL
µgIL
BQL
µgIL
5
EPA 625
5
2,4,6-
TRICHLOROPHENOL
BQL
µgIL
BQL
µgIL
5
EPA 625
5
Use this space (or a separate sheet) to provide Information on other actable compounds requested by the permit writer
BASE -NEUTRAL COMPOUNDS
ACENAPHTHENE
BQL
µgIL
BQL
µg/L
5
EPA 625
5
ACENAPHTHYLENE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
ANTHRACENE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
BENZIDINE
BQL
µgIL
BQL
µgIL
6
EPA 625
10
BENZO(A)ANTHRACENE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
BENZO(A)PYRENE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 12 of 22

FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastewater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
RENEWAL
i
RIVER BASIN:
Cape Fear River Basin
Outfall number. 001 (Complete once for eadr autiall discharging effluent to waters alto United States.)
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
f
MLIl DL
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
MOD
3,4 BENZO-
BQL
rsq/L
SQL
uglL
6
EPA 625
5
rLLIGRANTHCNC
BENZO(GHI)PERYL-ENE
BQL
µg/L
BQL
µg/L
5
EPA 625
5
BENZO(
FLUORANTHENE
SQL
µgIL
SQL
µgIL
5
EPA 625
5
BIS (2-CHLOROETHOXY)
METHANE
BQL
µg/L
BQL
µgIL
5
EPA 625
5
BIS (2-CHLOROEfHYL)-
ETHER
BQL
µg/L
BQL
µg/L
5
EPA 625
6
BIS (2-CHLOROISO-
PROPYL) ETHER
BQL
µgIL
BQL
µgIL
5
EPA 625
5
BIS (2-ETHYLHEXYL)
PHTHALATE
BQL
µg/L
BQL
µgIL
5
EPA 625
5
4-BROMOPHENYL
PHENYL ETHER
BQL
µg/L
BQL
µgIL
5
EPA 625
5
BUTYL BENZYL
PHTHALATE
SQL
µgIL
BQL
µg /L
6
EPA 625
5
2-CH
NAPHTHALENE
SQL
µg/L
BQL
µg/L
5
EPA 625
5
4-CHLORPHENYL
PHENYL ETHER
BQL
µgIL
BQL
µg/L
5
EPA 625
5
CHRYSENE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
DI-N-BERYL PHTHALATE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
DI-N-OCTYL PHTHALATE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
DIBENZO(A,H)
ANTHRACENE
BQL
µgIL
BQL
µg/L
5
EPA 625
5
1,2-DICHLOROBENZENE
SQL
µgIL
BQL
µgIL
5
EPA 625
5
1,3-DICHLOROBENZENE
BQL
µg/L
BQL
AWL.
5
EPA 625
5
1,4-DICHLOROBENZENE
BQL
µgIL
SQL
µgIL
5
EPA 625
5
3,3-DICHLORO-
BENZIDINE
BQL
µgIL
BQL
µgIL
5
EPA 625
10
DIETHYL PHTHALATE
BQL
µg/L
BQL
µgIL
5
EPA 625
5
DIMETHYL PHTHALATE
BQL
µg/L
BQL
µg/L
5
EPA 625
5
2,4-DINITROTOLUENE
BQL
µg/L
BQL
µgIL
5
EPA 625
5
2,8-DINRROTOLUENE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
1,2-DIPHENYL-
HYDRAZINE
BQL
µgIL
SQL
µgIL
5
EPA 625
5
EPA Form 3510-2A (Rev. 1-99). Rep aces EPA forms 7550.6 & 7550-22.
Page 13 of 22

I FACILITY NAME AND PERMIT NUMBER:
Town of Carolina Beach Wastevvater Treatment
Facility, NC0023256
PERMIT ACTION REQUESTED:
RENEWAL
RIVER BASIN:
Cape Fear Riven Basis
Outran number 001 (Complete once for each outran discharging effluent to waters either United States.)
MA]UMUM DAILY DISCHARGE
I AVERAGE DAILY DISCHARGE
POLLUTANT
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
METHOD
l�dL".IDL
FLUORANTHENE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
FLUORENE
BQL
µgIL
BQL
µgIL
6
EPA 625
5
HEXACHLOROBENZENE
BQL
µgIL
BQL
µg/L
5
EPA 625
5
HEXACHLORO-
BUTADiENE
BQL
µg1L
BQL
µg/L
5
EPA 625
6
HEXACHLOROCYCLO-
PENTADIENE
BQL
µgIL
BQL
µgIL
6
EPA 625
26
HEXACHLOROETHANE
BQL
µgJL
BQL
µgIL
5
EPA 626
5
INDEN0(112,3-CD)
PYRENE
BQL
µgIL
BQL
µgIL
6
EPA 625
6
ISOPHORONE
BQL
µgIL
BQL
AWL
5
EPA 625
6
NAPHTHALENE
BQL
µgJL
BQL
µg1L
5
EPA 625
6
NITROBENZENE
BQL
µgIL
BQL
µg/L
5
EPA 625
5
N-NITROSODI-N-
PROPYLAMINE
BQL
µgIL
BQL
AWL.•
6
EPA 625
5
METHYLAMfNE
BQL
µgIL
BQL
µgIL
5
EPA 625
5
N-NITROSODI-
PHENYL AMINE
BQL
µgIL
BQL
µgIL
5
EPA 626
5
PHENANTHRENE
BQL
µg/L
BQL
µgIL
5
EPA 625
5
PYRENE '
BQL
µgIL
BQL
µgIL
6
EPA 626
6
1,2,4-
TRICHLOROBENZENE
BQL
µgIL
BQL
µg1L
5
EPA 625
5
Use this space (or a separate sheet) to provide information on other base -neutral compounds requested by the permit writer
Use this space (or a separate sheet) to provide information on other pollutants (e.g., pesticides) requested by the permit writer
END OF PART D.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU :MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 755O.8 8 7550-22.
Page 14 of 22

Town of Carolina Beach Wastewater Treatment Facility
Permit No. NC0023256
Included is a schematic diagram of the existing 3.0 MGD wastewater treatment facility
consisting of a mechanical bar screen, manual bar screen, grit removal system, influent
and effluent flnwmeters, flow equalization basin, three oxidation ditches, two clarifiers,
aerobic digester, downflow filters, two sludge storage basins, two emergency generators,
chlorination/dechlorination contact chambers, air diffusers at the effluent contact
chamber prior to discharge, and a 6.7 acre re -use spray field. We are requesting that the
equalization basin be returned to our discharge permit since we are approximately less
than one month from the official start up of a newly constructed 200' x 250' equalization
basin. The plans and specifications for this project were sent to Mr. Dan Blaisdell of the
NCDENR Construction Grants and Loans Section on June 18, 2009.
Also included is a topographical map showing the locations of the wastewater treatment
facility, the existing discharge point, both active force mains through which wastewater
enters the WWTP, the location of the force main still under construction through which
wastewater will enter the WWTP in the future, and the one active water well within one -
quarter (1/4) mile of the treatment facility.

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This topographic map is labeled with markers showing the
locations of the Town of Carolina Beach WWTP, the discharge
point, the one active water well within one -quarter mile of the
WWTP boundary, both active force mains through which
wastewater enters the WWTP, and the location of the force
main still under construction through which wastewater will
enter the WWTP in the future. The future force main is part of
the current Lift Station #1 construction project that is
scheduled to be completed by the end of 2011.
•
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