NC0069311_Permit (Modification)_20111128

NPDES DOCUMENT SCANNING COVER :SHEET
NPDES Permit:
NC0069311
Franklin County WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
(Permit
Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Approval
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
November 28, 2011
Thisc document is printed on reuse paper - irtore arty
content on the rezrerse aside

ern
1ThENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Govemor Director Secretary
November 28, 2011
J. Bryce Mendenhall, Director
Franklin County Public Utilities
1630U.S.Hwy 1
Youngsville, NC 27596
Subject: Issuance of NPDES Permit Modification
NC0069311
Franklin County WWTP
Franklin County
Class WW4 decreasing to WW3
Dear Mr. Mendenhall:
The Division of Water Quality (Division) personnel have reviewed and approved your application for modification of
the subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. It 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 following changes have been made from the current permit:
. 1. In your request for interim flow limits, you requested flow limits pages for 1.0 MGD and 2.0 MGD,
plus the existing 3.0 MGD. .The Division found that there is no benefit to having separate flow limits
pages for 1.0 MGD and 2.0 MGD, so only an up to 2.0 MGD limits page and the existing 3.0 MGD
limits page are provided.
2. Sampling requirements for the 2.0 MGD case are reduced to 3/ Week from Daily for most parameters to
reflect the Grade 3 status for these flows.
3. In keeping with our Metals and Toxicants permitting strategy, monitoring has been reduced to quarterly
for Copper and Zinc, and should coincide with quarterly Whole Effluent Toxicity testing.
4. A new Condition, A.(3.) has been added to provide guidance for changing the flow regime based on
monthly average flowrate. The flow regime can only go up, never back down. This Special Condition
is different from the one contained in the draft permit modification dated July 6, 2011.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet http: / / h2o.state.nc.us /
An Equal Opportunity %Affirmative Action Employer
Noe Carolina
�tura!ly

If any parts, measurement frequencies, or sampling requirements contained in this permit are unacceptable, you have the
right to an adjudicatory hearing upon written request within thirty (30) days after receiving this letter. Your request must
take the form of a written petition conforming to Chapter 150B of the North Carolina General Statutes, and must be
filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714.
Unless such demand is made, this permit remains final and binding.
This permit is not transferable except after notifying the Division of Water Quality. The Division may modify and re-
issue, or revoke this permit. Please notice that this permit does not affect your legal obligation to obtain other permits
required by the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or other
federal or local governments.
If you have questions, or if we can be of further service, please contact Jim McKay at james.mckayQncdenr.gov or call
[phone].
Sincerely,
(u)1,9
,�oleen H. Sullins
Enclosure: NPDES Permit FINAL NC0069311
cc: Raleigh Regional Office/Surface Water Protection Section with factsheet
NPDES Permit File with factsheet
Central Files with factsheet
EPA Region 4, Pamala Myers with factsheet
Aquatic Toxicology Unit, Susan Meadows (E-mail copy)
TACU, Steve Reid (E-mail copy)
Pamlico -Tar River Foundation, Heather Jacobs Deck - Riverkeeperna,ptrf.org (E-mail copy)
North Carolina Wildlife Resources Commission/ Division of Inland Fisheries - Shari L. Bryant, Piedmont
Region Coordinator Habitat Conservation Program (E-mail copy)

Permit No. NC0069311
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Franklin County Public Utilities
is hereby authorized to discharge wastewater from a facility located at the
Franklin County WWTP
NCSR 1118, southeast of Franklinton
Franklin County
to receiving waters designated as Cedar Creek in the Tar -Pamlico River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV
hereof.
This permit shall become effective January 2, 2012.
This permit and authorization to discharge shall expire at midnight on September 30, 2014.
Signed this day November 28, 2011.
frleen H. Sullins, Director
vision of Water Quality
By Authority of Environmental Management Commission
Page 1

Permit No. NC0069311
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.
Franklin County Public Utilities
is hereby authorized to:
1. Continue to operate an existing 3.0 MGD wastewater treatment facility located at NCSR 1118,
Franklin County, and consisting of:
• Influent pump station with mechanical and manual bar screens
• Grit chamber
• Dual aeration/anaerobic/anoxic basins
• Dual clarifiers
• Tertiary filter
• Dual train UV system
• Parshall flume
• Post aeration; and
2. Discharge from said treatment works, through Outfall 001, into Cedar Creek, a Class C- NSW
water in the Tar -Pamlico River Basin, at the location specified on the attached map.
Page 2

Permit No. NC0069311
3
Franklin County WWTP
Rego,'iicStmmu Cod azCreek Dnabs,eBasin: Tu•Paniico
6.atia,dr, 36 04' 12"N Ioncitss* 78 25' 01"W
Sri -Baal: 03-03-01 Psznattc1Flowl 1.0 MGD
to 3.0 MGD
*ate CriAIUSGSCho* C2SSW/ Franklireon Stramawl C-NSW
NPDES Permit NC0069311
Franklin County
Page 3

Permit No. NC0069311
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the permit effective date and lasting until Monthly Average flow equals or exceeds 90%
of 2.0 MGD (1.8 MGD), or until permit expiration, the Permittee is authorized to discharge treated
wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS •
Monthly
Average
Weekly
` Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
_ Location 2
Flow
2.0 MGD
Continuous
Recording
I or E
BOD5 3 (summer) 4
8.0 mg/L
12.0 mg/L
3/ Week
Composite
I, E
BOD5 3 (winter) 4
18.0 mg/L
27.0 mg/L
3/ Week
Composite
I, E
Total Suspended Solids 3
30.0 mg/L
45.0 mg/L
3/ Week
Composite
I, E
NH3 as N (Summer) 4
1.0 mg/L
3.0 mg/L
3/ Week
Composite
E
NH3 as N (Winter) 4
2.0 mg/L
6.0 mg/L
3/ Week
Composite
E
Dissolved Oxygen
Daily average not less than 5.0 mg/L
3/ Week
Grab
E
Fecal Coliform
200/100 ml
400/100 nil
3/ Week
Grab
E
Temperature
3/ Week
Grab
E
Conductivity
3/ Week
Grab
E
pH
Between 6.0 and 9.0 Standard Units
3/ Week
Grab
E
Total Nitrogen (TN) 5
TN=TKN+(NOT N + NO3-N)
Monitor and Report (mg/L)
Monthly
(Calculated)
E
Total Kjeldahl Nitrogen
(TKN)
Monitor and Report (mg/L)
Monthly
Composite
E
Nitrite/Nitrate Nitrogen
(NO2-N+ NO3-N)
Monitor and Report (mg/L)
Monthly
Composite
E
Total Phosphorus 5
Weekly
Composite
E
Total Copper 6
•
Quarterly
Composite
E
Total Zinc 6
•
Quarterly
Composite
E
Chronic Toxicity 6, 7
Quarterly
Composite
E
PPA Scan 8
•
Annually
Composite
E
Footnotes:
1. See Condition A. (3) for Flow Considerations.
2. I: Influent. E: Effluent. See condition A. (4) of this permit for instream monitoring requirements.
3. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Summer shall be defined as April 1— October 31 with winter defined as the balance of the year.
5. See condition A. (5) for nutrient special condition.
6. Sample Copper and Zinc quarterly in conjunction with WET testing.
7. Chronic Toxicity (Ceriodaphnia) @ 74 %, January, April, July and October; see condition A. (6) of this
permit.
8. See condition A. (7) for effluent pollutant scan
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM VISIBLE IN OTHER THAN TRACE AMOUNTS.

Permit No. NC0069311
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the date flow increases above 90% of 2.0 MGD (1.8 MGD) 1 and lasting until permit
expiration, the Permittee is authorized to discharge treated wastewater from Outfall 001. Such
discharges shall be limited and monitored by the Permittee as specified below:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
Location 2
Flow
3.0 MGD
Continuous
• Recording
I or E
BOD5 3 (summer) 4
8.0 mg/L
12.0 mg/L
Daily
Composite
• I, E
BOD5 3 (winter) 4
18.0 mg/L
27.0 mg/L
Daily
Composite
I, E
Total Suspended Solids 3
30.0 mg/L.
45.0 mg/L
Daily
Composite
I, E
NH3 as N (Summer) 4
1.0 mg/L
3.0 mg/L
Daily
Composite
E •
NH3 as N (Winter) 4
2.0 mg/L
6.0 mg/L
Daily
Composite
E
Dissolved Oxygen
Daily average not less than 5.0 mg/L
Daily
Grab
E
Fecal Coliform
200/100 ml
400/100 ml
Daily
Grab
E
Temperature
Daily
Grab
E
Conductivity
Daily
Grab
E
pH
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Total Nitrogen (TN) 5
TN=TKN+(NO2 N + NO3-N)
Monitor and Report (mg/L)
Monthly
(Calculated)
E
Total Kjeldahl Nitrogen
(T ) '
Monitor and Report (mg/L)
Monthly
Composite
E
Nitrite/Nitrate. Nitrogen
(NO2-N+ NO3 N)
Monitor and Report (mg/L)
Monthly
Composite
E
Total Phosphorus 5
Weekly
Composite
E
Total Copper 6
Quarterly
Composite
E
Total Zinc 6 .
Quarterly
Composite
E
Chronic Toxicity 6' 7
Quarterly
Composite
E
PPA Scan 8
Annually
Composite
E
Footnotes:
1. See Condition A. (3) for Flow Considerations.
2. I: Influent. E: Effluent. See condition A. (4) of this permit for instream monitoring requirements.
3. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Summer shall be defined as April 1— October 31 with winter defined as the balance of the year.
5. See condition A. (5) for nutrient conditions.
6. Sample Copper and Zinc quarterly in conjunction with WET testing.
7. Chronic Toxicity (Ceriodaphnia) @ 74 %, January, April, July and October; see condition A. (6) of this
permit.
8. See condition A. (7) for effluent pollutant scan
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM VISIBLE IN OTHER THAN TRACE AMOUNTS. •
Page 5

Permit No. NC0069311
A. (3) FLOW MONITORING REQUIREMENTS
Each month, the facility shall evaluate the monthly average flow, expressed as MGD, for the previous
month. If the monthly average flowrate is equal to or greater than 1.8 MGD, the facility shall move up
to the 3.0 MGD flow regime on the permit. The facility shall call the Surface Water Protection
Supervisor at the Raleigh Regional Office at [phone] and inform him or her of the flow regime
change, so that the BIMS database can be updated. The flow limit does not go back down if the
Monthly Average flow decreases.
A. (4) INSTREAM MONITORING REQUIREMENTS
Instream monitoring is required for the following parameters at the locations specified:
� 1 f �` .Fi ; �
EFFH NT
��r 5 � a v
�`- � � � � , � �
�)
CHARACTERISTICS
. - ... .1 _ �' r ,'"I',': . . ..,
•:�; t {_ s i} i ..A �sY � S �
.
,, i _ .,�.. .:-. .:
Measurement Frequency � r�
+� s s +N ^, t, w• 3+ t ', �-� 4
,, , } �; , : , �x �w ,1 x' r
F.1' -�' '. >A; - :f r .i ::;'� ri.. '4i� �f� e
9.3fi f �! 9' i� t -
yr( a' .rYe
�-i Sam a .Type
F .. :. � s
7 fit: �#., :: .,Y f
a... i••..J• t.•. i' G � ._..
�- � :j",s 1
:} �� ,,�
1 � 1 ♦ i �: � x R .
Location'
i}-i.. .. r.A t: `'.iii�..
Dissolved Oxygen
June -Sept
3/week
, Grab
U, D
October -May
1/week
Temperature
June -Sept
3/week
Grab
U, D
October -May
1/week
Conductivity
June -Sept
3/week
Grab
U, D
October -May
1/week
Footnotes:
1. U - Upstream at NC 1116, D- Downstream at NC 1114
Upon initiation of stream sampling by the Tar -Pamlico Basin Association, the instream monitoring
requirements as stated above are waived. Should your membership in the Association be terminated,
you shall notify the Division immediately and the instream monitoring requirements specified in your
permit shall be reinstated.
Page 6

Permit No. NC0069311
A. (5) NUTRIENT REDUCTION
(1) Point source dischargers in the Tar -Pamlico River Basin are subject to the terms and conditions of
the Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy: Phase III (the
"Agreement"), agreed to on April 14, 2005; and the nutrient TMDL for the Basin, approved by
the USEPA on August 10, 1995.
(2) The Permittee is a member of the Tar -Pamlico Basin Association, which consists of the following
fifteen facilities:
Membership of Tar -Pamlico Basin Association
Permit
Owner
Facility
NC0030317
City of Rocky Mount •
Tar River Regional WWTP
NC0023931
Greenville Utilities Commission
GUC WWTP
NC0020605
Town of Tarboro
Tarboro WWTP
NC0025054
City of Oxford
Oxford WWTP
NC0020648
City of Washington .
Washington WWTP
NC0069311
Franklin County
Franklin County WWTP
NC0020834
Town of Warrenton
Warrenton WWTP
NC0026042
Town of Robersonville
Robersonville WWTP
NC0020231
Town of Louisburg .
Louisburg WWTP
NC0026492
Town of Belhaven
Belhaven WWTP
NC0025402
Town of Enfield
Enfield WWTP
NC0023337
Town of Scotland Neck
Scotland Neck WWTP
NC0020061
Town of Spring Hope
Spring Hope WWTP
NC0020435
Town of Pinetops
Pinetops WWTP
NC0042269
Town of Bunn •
Bunn WWTP
(3) The Agreement defines nitrogen and phosphorus caps for the Association as follows:
Phase III Nutrient Caps — Tar -Pamlico Basin Association'
Total Nitrogen
Total Phosphorus
(lb/yr)
(kg/yr)
(lb/yr)
(kg/yr)
891,272
404,274
161,070
73,060
1) Includes allowed adjustment to the 1991 baseline
The Agreement also specifies that the Association has properly accrued and banked nitrogen
offset credits in the following amounts:
Page 7

Permit No. NC0069311
Nitrogen Offset Credits — Tar -Pamlico Basin Association
Nitrogen Credits
Timeframe
(lb)
. (kg)
Phase I
10,138
4,608
Phase II
30,276
13,762
Phase III
10,564
4,802
(4) Consistent with TMDL requirements of 40 C.F.R. 122.44(d)(1), 122.44(d)(1)(vii)(A) and (B),
and Section 301(b)(1)(C) of the federal Clean Water Act, the Phase III nutrient caps and applied
credits are hereby incorporated into this permit as enforceable limitations on the aggregate
discharge of nitrogen and phosphorus by the Association, as follows:
(5)
Nutrient Load Limits — Tar -Pamlico Basin Association
Total Nitrogen
Total Phosphorus
(lb/yr)
(kg/yr)
(lb/yr)
(kg/yr)
Nutrient Caps
891,272
404,274
161,070
73,060
Applied Credits
0
0
N/A
N/A
Effective Load Limits
891,272
404,274
161,070
73,060
In accordance with the terms and conditions of the Phase III Agreement, the Association may
apply additional nitrogen offset credits in anticipation of future exceedances. Application of
credits shall be made through modification of the members' NPDES permits.
(6). The Division reserves the right to reopen this permit and make appropriate modifications in the
event that:
(7)
a. The current Agreement is revised to add or modify the nutrient caps, reporting requirements,
or other requirements relevant to this permit.
b. The terms of the Agreement are violated, in which case the Division will implement the
strategy in Section X. of the Agreement, Violation of Terms of this Agreement.
c. The Director determines that additional requirements, including effluent limitations, are
necessary to prevent localized adverse impacts to water quality.
No later than March 1 of each year, the Association shall prepare an annual report of its
performance for the previous calendar year to the Division at the following address:
Division of Water Quality, Point Source Branch
Attn: Tar -Pamlico NPDES Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
The report shall include each member's monthly mass loadings and the Association's aggregate
annual loadings for Total Nitrogen and Total Phosphorus for the subject calendar year.
Page 8

Permit No. NC0069311
A. (6) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 74% for all flow regimes.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
January, April, July and October. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ Form AT-
3 (original) is to be sent to the following address:
Attention:
NC DENR / DWQ / 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.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. 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 the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month. 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.
Page 9

Permit No. NC0069311
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, 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. (7) EFFLUENT POLLUTANT SCAN
The permittee shall perform an annual Effluent Pollutant Scan for all parameters listed in the table
below (in accordance with 40 CFR Part 136). The annual effluent pollutant scan samples shall represent
seasonal (summer, winter, fall, spring) variations over the 5-year permit cycle. Unless otherwise
indicated, metals shall be analyzed as "total recoverable." Additionally, the method detection level and
the minimum level shall be the most sensitive as provided by the appropriate analytical procedure.
Ammonia (as N)
Chlorine (total residual, TRC) .
Dissolved oxygen
Nitrate/Nitrite
Total Kjeldahl nitrogen
Oil and grease
Total Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (Method 1631E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
. Chlorodibromomethane
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
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
Page 10

Permit No. NC0069311
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved by the
Director, within 90 days of sampling. A copy of the report shall be submitted to Central Files to the
following address: Division of Water Quality, Water Quality Section, 1617 Mail Service Center,
Raleigh, North Carolina 27699-1617. This submittal must be included with the next permit renewal
application.
Page 11

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0069311
Facility Information
Applicant/Facility Name:
Franklin County Dept. Of Public Utilities/ Franklin County WWTP
Applicant Address:
1630 US HWY 1, Youngsville, NC 27596
Facility Address:
1099 Lane Store Road, Franklinton, NC 275525
Permitted Flow:
3.0 MGD with Interim Downrate to 2.0 MGD
Type of Waste:
94 % Domestic, 6% Industrial
Facility Classification:
IV/ III @ 2.0 MGD
Permit Status:
Active/ Minor Modification
County:
Franklin
Miscellaneous
Receiving Stream:
Cedar Creek
Regional Office:
RRO
Stream Classification:
C NSW
State Grid / USGS Quad:
C25SW/ Franklinton
303(d) Listed?
Impaired for Turbidity
on 2010 303(d) list
Permit Writer:
Jim McKay
Basin/Subbasin:
Tar -Pam / 30301
Date:
10/31/2011
Drainage Area (mi2):
25.3
•
Lat. 36° 04' 12" N Long. 78° 25' 01" W
Summer 7Q10 (cfs)
1.6
Winter 7Q10 (cfs):
5.2
30Q2 (cfs)
7.0
Average Flow (cfs):
25.3
1WC (%):
74
Summary: Franklin County submitted an application for modification of their permit on June 3, 2011.
They are currently permitted for 3.0 MGD, as a Grade IV WWTP. Their average flow over the past 5 years is
0.378 MGD; the maximum monthly average flow is 0.662 MGD over the same time frame. They have
requested tiered flow, with tiers at 1.0 MGD, 2.0 MGD, and 3.0 MGD. The 1.0 and 2.0 MGD flow tiers
would place the plant as a Grade III WWTP, and reduce sampling requirements to 3 times a week from Daily
for most parameters. This would lead to significant cost savings. The Division of Water Quality has decided
that there is no advantage to having a 1.0, 2.0 & 3.0 MGD permit, that a 2.0 MGD & 3.0 MGD permit would
achieve all the advantages, and be simpler to administer.
The 3.0 MGD treatment system, in operation since May of 2004, consists of an influent pump station with
mechanical and manual bar screens, a grit chamber, dual aeration/anaerobic/anoxic basins, dual clarifiers,
tertiary filters, a dual train UV disinfection system, parshall flume, and post aeration. There have been no
changes to the facility since the last permit renewal. Franklin County participates in the Tar -Pamlico River
Basin Association and the monitoring coalition.
Pretreatment: Franklin County has an approved full pretreatment program with one SIU and one CIU. The
SIU is Southern Lithoplate, Inc, which anodizes aluminum coil. Their permitted discharge is 178,000 gallons
per day.
Basin Plan: A review of the latest Tar -Pamlico basin plan data (January 2011) indicated Cedar Creek is
impaired for turbidity. This should not affect this permit modification to reduce discharged flow. EPA is
primarily concerned about inorganic TSS from mines, industrial dischargers, and water treatment plants, not
the organic TSS from domestic sewerage treatment.
DMR Review: This is a permit modification with reductions in flow. RPA was not conducted.
Fact Sheet
NPDES NC0069311

Effluent Toxicity: The facility performs chronic toxicity at 74%. All tests from 2007 up to the present were
passed. WET testing for all flow tiers is held at 74% in the modified permit in order to provide continuity in
testing.
Metals Monitoring: In keeping with the Division's Permitting Strategy for toxicants and metals, monitoring
for Copper and Zinc is changed to Quarterly, with no limits. They should be sampled in conjunction with
WET testing.
Nutrient Controls:
History and Status of Nutrient Management Strategy for Point Sources.
On September 12, 1989, the Environmental Managements Commission classified the Tar -Pamlico River
Basin as Nutrient Sensitive Waters (NSW). On February 13, 1992, the Commission approved a revised NSW
Implementation Strategy that established the framework for a nutrient reduction trading program between
point and nonpoint sources of pollution. The Strategy also established certain conditions to be met by an
association of dischargers known as the Tar -Pamlico Basin Association (the Association). Those conditions
are defined in the Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy (the "Agreement").
The Association agreed to meet specific conditions in order to have the opportunity both to pursue alternative
approaches to managing its nutrient discharges and to reduce nutrient loading in the most cost-effective
manner, including the option to fund agricultural best management practices (BMPs). These conditions
included the development of an estuarine hydrodynamic computer model, engineering evaluations of
wastewater treatment plants, annual monitoring reports on nutrient loading, and minimum payments for the
administration and implementation of agricultural BMPs. The Association met all conditions established in
Phase I.
The Phase I Agreement set collective, technology -based discharge loading limits for the Association in the
form of an annually decreasing, combined nitrogen and phosphorus cap. During the 1990 to 1991 period, low
cost operational changes were implemented at several facilities to reduce nitrogen loadings. The engineering
evaluation of member facilities and implementation of the study's recommended nutrient removal
improvements also yielded significant loading reductions. These changes, combined with installation of
nutrient removal at several of the larger facilities, allowed the Association to reduce its nutrient loads and
stay beneath its caps throughout Phase I.
The Phase II Agreement spanned ten years from January 1995 through December 2004. Modeling of the
Pamlico River estuary during Phase I provided a foundation for water quality -based loading goals for Phase
II. Based on the estuary modeling, Phase II established overall performance goals for the nutrient strategy of
30 percent reduction in nitrogen loading from a baseline year of 1991 and no increase in loading of
phosphorus from that baseline. Based on these goals, it also established nitrogen and phosphorus discharge
loading caps for the Association. These caps also accounted for the load reductions achieved through
operational changes implemented during the 1990/1991 period. The Association stayed beneath both caps
throughout Phase II, steadily reducing its loading of both nutrients despite steady increases in flow. Overall,
from 1990 through 2003, the Association decreased nitrogen loads to the river by approximately 45% and
phosphorus loads by over 60%, while flows increased approximately 30%. The attached table summarizes
caps and loads through 2008. The success of this collective cap approach may be attributed in part to the
element of time it provided for individual facilities to implement nutrient removal as it became most cost-
effective for them.
Phase II also established requirements for non -Association point source dischargers and called for rulemaking
to fully enact those requirements. That rulemaking became effective in April 1997. It required new and
expanding dischargers over certain sizes to meet effluent concentration limits and to fully offset new or
increased loads using the same offset approach developed for the Association. During Phase II, there were no
new dischargers to the basin, and no existing dischargers became subject to the rule's requirements.
Phase II also established instream nutrient goals for nonpoint sources and called for a separate nonpoint
source (NPS) strategy. These were used to establish a nutrient TMDL, which was approved by the USEPA on
August 10, 1995.
Fact Sheet
NPDES NC0069311

The NPS strategy was put into effect in January 1996 as a voluntary effort that would work from existing
programs, seeking additional funds and developing accounting tools. After two years of voluntary
implementation, the EMC found progress insufficient and initiated nonpoint source rulemaking. Rules were
fashioned after those recently adopted in the adjacent Neuse River basin. They addressed riparian buffer
protection, agriculture, urban stormwater, and fertilizer management. The rules became effective during 2000
and 2001 and are currently in various stages of implementation.
Phase III of this Agreement was approved by the EMC on April 14, 2005. It spans an additional ten years
through December 31, 2014. This third phase continues the structure established in Phase II including overall
performance goals for the nutrient strategy of 30 percent reduction in nitrogen loading from a baseline year of
1991 and no increase in loading of phosphorus from that baseline. The Phase III Agreement updated
Association membership and related nutrient caps. It proposed action in the first two years to improve the
offset rate, resolve related temporal issues, and revisit alternative offset options. The parties to the Agreement
met several times during the first four years of the Agreement to work on addressing these action items and
came to agreement on issues related to banked credit and credit life.
In 2006 DWQ contracted the NCSU Water Quality Group to estimate the cost-effectiveness of agricultural
BMPs to use for updating the nitrogen offset rate in the Agreement and to establish a phosphorus offset rate.
As a result of the study, the parties to the Agreement indentified actions to be taken by the conclusion of
Phase III and addressed in the Phase IV Agreement:
1. Evaluate whether the Agricultural Cost Share Program continues to provide the most efficient vehicle
to implement the pollution credits trading program. This evaluation should consider the effect of
delays in BMP implementation relative to nutrient cap exceedance and how such delays may impact
the allowable point source nutrient budget.
2. Evaluate the trading offset credit cost calculation method to ensure the offset rate reflects all actual
costs incurred in program development and implementation and reflects the costs of the type of
agricultural BMPs implemented through this program.
3. Conduct a water quality trend analysis,. including evaluation of TN losses occurring during transport
to the estuary. This analysis will inform the parties regarding the need for changes in acceptable
loads and the relative impacts of point and non -point contributions.
Fact Sheet
NPDES NC0069311

Nutrient Limits.
Point source dischargers in the Tar -Pamlico River Basin are subject to the terms and conditions of the
Agreement and to the nutrient TMDL developed for the Basin. The Agreement provided a cost-effective
alternative to uniform technology -based nutrient concentration limits. It later added elements of the TMDL,
including estuary loading goals and point and nonpoint source allocations.
As of December 2009, the Association consists of fifteen members. The member facilities are listed in the
following table, and their locations are shown on the attached map.
Membership of Tar -Pamlico Basin Association
Permit
Owner
Facility
NC0030317
City of Rocky Mount
Tar River Regional WWTP
NC0023931
Greenville Utilities Commission
GUC WWTP
NC0020605
Town of Tarboro
Tarboro WWTP
NC0025054
City of Oxford
Oxford WWTP
NC0020648
City of Washington •
Washington WWTP
NC0069311
Franklin County
Franklin County WWTP
NC0020834
Town of Warrenton
Warrenton WWTP
NC0026042
Town of Robersonville
Robersonville WWTP
NC0020231
Town of Louisburg
Louisburg WWTP
NC0026492
Town of Belhaven
Belhaven WWTP
NC0025402
Town of Enfield
Enfield WWTP
NC0023337
Town of Scotland
Neck Scotland Neck WWTP
NC0020061
Town of Spring Hope
Spring Hope WWTP
NC0020435
Town of Pinetops
Pinetops WWTP
NC0042269
Town of Bunn
Bunn WWTP
The nitrogen and phosphorus caps for the Association are defined in the Phase III Agreement as follows:
Phase III Nutrient Caps — Tar -Pamlico Basin Association'
Total Nitrogen
Total Phosphorus
(lb/yr)
(kg/yr)
(lb/yr)
(kg/yr)
891,272
404,274
161,070
73,060
' Includes allowed adjustment to the 1991 baseline
The Agreement further provides that the Association may accrue and bank nitrogen credits by funding
nonpoint source nutrient reduction measures (e.g., agricultural BMPs) and that it may purchase credits or
apply banked credits in anticipation of future cap exceedances. The current Agreement specifies that the
Association holds offset credits in the following amounts:
Nitrogen Offset Credits — Tar -Pamlico Basin Association
Nitrogen Credits
Timeframe
(lb)
(kg)
Phase I
10,138
4,608
Phase II
30,276
13,762
Phase III
10,564
4,802
Fact Sheet
NPDES NC0069311

The Association has consistently and reliably kept its nutrient loadings beneath the caps without relying on
banked credits. By calendar year 2008, the group had reduced its loads to 63% of its nitrogen cap and 60% of
the phosphorus cap.
Since the Tar -Pamlico strategy's inception, the EPA has praised the strategy for its innovative and integrative
approach to nutrient management and has touted it repeatedly as a model for others to use. However,
guidance released by the EPA's Office of Water Management in 2007 re -iterates that federal NPDES
regulations (40 C.F.R. 122.44(d)(1)) and Section 301(b)(1)(C) of the federal Clean Water Act require that
NPDES permits include any applicable limitations established in or based upon an approved TMDL. The
Tar -Pamlico permits have not included nutrient limits, because the Agreement specified the Association's
caps and, until recently, the EPA Region 4 office had accepted that approach. In light of the 2007 guidance,
Region 4 has modified its position on the matter and is requiring that the members' permits include the group
nutrient limits at this time and individual limits in 2014.
Therefore, the Division proposes at this time to include the Phase III nutrient caps as enforceable permit
limits in the members' individual permits. These limits, like the caps, apply to the aggregate discharge of
nitrogen and phosphorus by the Association members as a group.
In order to establish individual nutrient limits by 2014, the Division must conduct additional technical studies
(e.g., determine delivery rates for each discharger, develop individual N and P allocations) and work with the
Association to complete major revisions to the Tar -Pamlico strategy and the Agreement: It is also likely that
the Division must adopt rules to provide for the operation of the Association under a group NPDES permit.
Annual Nutrient Loads And Caps, Tar -Pamlico Basin Association
Phase I
Combined N+P
1991'
1992'
1993'
• 1994'
Loading Cap a
N (kg/yr)
525,000
500,000
475,000
425,000
Actual Load
N (kg/yr)
461,394
436,128
417,217
371,200
%ofCap
N
88
87
88
87
Average Daily
Flow (MGD)
24.88
26.86
28.46
26.65
Changes from Previous Permit:
1. Added new flow tier sheets for 2.0 MGD.
2. Monitoring is changed to 3/ Week for most parameters for the 2.0 MGD flow tiers.
3. Monitoring for Copper and Zinc changed to Quarterly in keeping with the Metals and Toxicants
permitting strategy.
4. A new Special Condition, A.(3) has been added to provide guidance for changing the flow regime
based on Monthly Average flowrate. The flow regime can only go up, never back down.
5. EPA's guidance letter of February 25, 2009 regarding TSS discharges to waters impaired for turbidity
does not apply to this case. EPA's guidance addresses industrial wastewater with TSS discharging to
impaired water, while this is mainly domestic with a very minor industrial contribution. The usual
TSS limits are included on both flow pages, but turbidity limits are not required.
Fact Sheet
NPDES NC0069311

PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice:
Permit Scheduled to Issue:
Effective Date (Tentative):
NPDES DIVISION CONTACT
July 6, 2011.
November, 2011
January 2, 2012
If you have questions regarding any of the above information or on the attached permit, please contact Jim
McKay at [phone].
NAME: /n
REGIONAL OFFICE COMMENTS
DATE: !d//'3/%2 O //
NAME: DATE:
Fact Sheet
NPDES NC0069311

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ATA,
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
August 11, 2011
Shari L. Bryant, Piedmont Region Coordinator - Division of Inland Fisheries
Wildlife Resources Commission
Subject: Reply to comments on draft permit modification
Franklin County WWTP
NPDES Permit NC0069311
Dear Ms. Bryant:
Thank you for your thorough and timely review of the draft of Franklin County WWTP NPDES permit modification.
However, we cannot accept your request to change sampling rates based on the IWC of the effluent. Sampling frequency
is established by our rules and is based on the permitted flow -rate of the facility. We could be accused of being arbitrary
and capricious for that approach.
The Division of Water Quality (DWQ) uses limits on parameters of concern to protect aquatic life, instead of monitoring
frequency. The permit limits on the Franklin County WWTP are very stringent in order to protect the mussels. The
summer BOD limit is 8.0 mg/ L instead of the usual secondary standard of 30.0 mg/ L. Ammonia- nitrogen limits are 1.0
mg/ L, which is about as stringent as we go. UV radiation is used for disinfection instead of chlorine.
The facility has been meeting these very stringent limits consistently, with an exception in 2010 when an industry
accidently sent phosphoric acid to the WWTP, which killed the bacteria that control ammonia -nitrogen. The industry was
stopped from sending industrial wastewater to the WWTP as a result of this. They have recently resumed sending
industrial wastewater, but at a reduced rate. The facility has also passed all 18 consecutive Whole Effluent Toxicity tests
over the past 5 years. The permit modification will reduce sampling from 5 times per week to 3 times per week. We do
not think this will create any new hazards to aquatic life.
Please contact me if you have any further questions or comments.
Sincerely,
Jim McKay
Complex NPDES Permitting
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] t Customer Service: 1-877-623-6748
Internet: http:11 h2o.state.nc.us /
An Equal Opportunity', Affirmative Action Employer
One
No •thCarolina
aturallrl

4
North Carolina Wildlife Resources Commission
Gordon Myers, Executive Director
MEMORANDUM
TO: Jim McKay, Surface Water Protection Section — Point Source Branch
Division of Water Quality
FROM: Shari L. Bryant, Piedmont Region Coordinator _Ako. u-:i1+-
Habitat Conservation Program
DATE: 27 July 2011
SUBJECT: Permit Modification for Franklin County Public Utilities, Franklin County Wastewater
Treatment Plant, Franklin County, NPDES Permit No. NC0069311
Biologists with the North Carolina Wildlife Resources Commission have reviewed the subject
document. Our comments are provided in accordance with provisions of the Clean Water Act of 1977 (as
amended), Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d), North
Carolina General Statutes (G.S. 113-131 et seq.), and North Carolina Administrative Code 15A NCAC
10I.0102.
Franklin County Public Utilities has applied for a modification of their NPDES permit to
discharge treated wastewater into Cedar Creek in the Tar -Pamlico River basin. The Franklin County
wastewater treatment plant is a 3.0 mgd facility that includes daily sampling requirements. Over the last
several years the discharge has been between 0.3 and 0.6 mgd. The modification includes a reduction in
the sampling requirements to three times per week for most parameters when the discharge is below 2.0
mgd. Also, copper and zinc monitoring has been reduced to quarterly.
There are records for the federal and state endangered dwarf wedgemussel (Alasmidonta
heterodon) and the state threatened triangle floater (Alasmidonta undulata) in Cedar Creek. Also, the
Significant Natural Heritage Area — Cedar Creek Aquatic Habitat — is located adjacent to and downstream
of the discharge, and the Upper/Middle Tar River Macrosite is located downstream of the discharge.
Freshwater mussels are very sensitive to chlorine, ammonia, copper, and other constituents found
in wastewater. We will not object to the proposed modification provided the facility has been in
compliance with its current effluent limitations for the last 24 months, and with the provision that daily
sampling occurs whenever the instream waste concentration (IWC) is greater than 50% regardless of the
discharge amount. Therefore, if the facility discharges 0.6 mgd, but the IWC is 70%, then daily sampling
should occur until the IWC is 50% or less.
Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: [phone] • Fax: [phone]

Page 2
27 July 2011
Franklin Co. WWTP
NPDES Permit No. NC0069311
Thank you for the opportunity to comment on this permit modification. If we can be of further
assistance, please contact our office at [phone].
ec: Rob Nichols, WRC
Tom Augspurger, USFWS
or:,5'ha.t,' p arr Slue;, br aR�� �G✓�

Mckay, James
From: Mckay, James
Sent: Wednesday, July 20, 2011 11:29 AM
To: 'Pamala Myers'
Subject: RE: RE:NC0069311 Franklin County Utilities draft (Mod)
Thank you!
Jim McKay, Environmental Engineer
NC DENR / Division of Water Quality / Surface Water Protection Section Point Source Branch
1617 Mail Service Center, Raleigh, NC 27699-1617
919/807-6404 (work); 919/807-6495 (fax)
**Please note, my email address has changed to James.McKav(alncdenr.gov
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.
Original Message
From: Pamala Myers(mailto:Myers.Pamala0epamail.epa.govl
Sent: Wednesday, July 20, 2011 10:55 AM
To: Mckay, James
Subject: RE:N00069311 Franklin County Utilities draft (Mod)
Hi Jim,
EPA has no comments on the draft -modification at this time.
As always if any new significant changes to the draft occur prior to its issuance please
allow Region 4 another opportunity to review the draft permit.
Thank you,
Pamala Myers
Environmental Engineer and Technical Advisor Pollution Control and Implementation Branch
Water Protection Division Municipal and Industrial NPDES Section U.S. EPA, Region 4 Atlanta,
GA 30303
404.562.9421
404.562.8692 (fax)
1

AFFIDAVIT OF PUBLICATION
NORTH CAROLINA.
Wake County. ) Ss.
Public Notice
North Carolina Environmental
Aonagement Commission/ NPDES Unit
1617 Mall Servile Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a
NPDES Wastewater Permit
The North Carbllna Environmental Man-
agement Commission proposes to issue a
NPDES wastewater discharge permit to the
Person(s) listed below.
Written comments regarding•the proposed
permit will be accepted until 30 days after
the publish dale of thls notice. The Director
of the NC Division of Water Quality (DWQ)
may hold a public hearing should there be a
significant degree of public interest: Please
mail comments and/or information requests
to DWQ. at the above address: Interested
persons mairvislt the DWQ at512N, Salis-
bury Street,
Raleigh,
aloinformationmo
NPDES permits and this notice may be
found on our website: http:llportal.ncdenr.
org/web/wg/swp/Pslnpdes/calendar, or by
calling [phone].
Town of modify it octivnn eNp�ermfitto)d schargeedInt0
Crooked Creek within the Tar -Pamlico Riv-
er Basin.
Franklin County Public Utilities, NPDES
Permit Number NC0069311, has applied for
modification of its permit discharging to
Cedar in Creek Bo-
sin.River
Thidishargmay affect fuutreloca-
tlons to the receiving stream.
N&O: July-& 2011
Before the undersigned, a Notary Public of Wake
County North Carolina, duly commissioned and authorized to
administer oaths, affirmations, etc., personally appeared Debra
Peebles, who, being duly swom or affirmed, according to law,
doth depose and say that she is Accounts Receivable Specialist
of The News and Observer a corporation organized and doing
business under the Laws of the State of North Carolina, and
publishing a newspaper known as The News and Observer, in
the City of Raleigh , Wake County and State aforesaid,
the said newspaper in which such notice, paper, document, or
legal advertisement was published was, at the time of each and
every such publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of the
General Statutes of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the General
Statutes of North Carolina, and that as such she makes this
affidavit; that she is familiar with the books, files and business
of said corporation and by reference to the files of said
publication the attached advertisement for NCDENR/ DWQ/
POINT SOURCE was inserted in the aforesaid newspaper
on dates as follows: 07/08/11
Account Number: 80763040
The above is correctly copied from the books and files of the
foresorporation and publication.
Debra Peebles, Accounts Receivable Specialist
Wake County, North Carolina
Sworn or affirmed to, and subscribed before me, this 11 day
of JULY , 2011 AD, by Debra Peebles.
In Testimony Whereof, I have hereunto set my hand and
affixed my official seal, tl Qay and year afo psaid.
Timothy R. slow, Notary Public
My commission expires June 2, 2013

IWC Calculations
Facility: Franklin County WWTP
NC0069311
Prepared By: Jim McKay
Enter Design Flow (MGD): 3
Enter s7Q10 (cfs): 1.6
Enter w7Q10 (cfs): 5.2
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/l)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/I)
IWC (%)
Allowable Conc. (ug/I)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
1.6
3
4.65
17.0
0
74.40
23
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
200/100mI DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
1.34 Upstream Bkgd (mg/l)
IWC (%)
Allowable Conc. (mg/I)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
4. BAT for Minor Domestics: 2 mg/I (summer) and 4 mg/I (winter)
5. BAT for Major Municipals: 1 mg/I (year-round)
1.6
3
4.65
1.0
0.22
74.40
1.3
5.2
3
4.65
1.8
0.22
47.21
3.6
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009

Franklin County WWTP, NC0069311
Receiving Stream: Cedar Creek
Drainage Area, (mi2) 25.3
Summer 7Q10 (cfs) 1.6
Winter 7Q10 (cfs) 5.2
30Q2 (cfs) 7.0
Average Flow (cfs) 25.3
Discharge Rate (MGD)
IWC (%)
5-year
maximum 5-year
monthly monthly
average average
flow flow
3.0 2.0 1.0 0.662 0.378
74% 66% 49% 39% 27%

jot( Polite)1-
f&Fpnklin
AN..■llll.ou, n
J
A ResearchTriauc"lc Regionr Gm";unit141
June 3, 2011
Mr. Tom Belnick
NC DENR — DWQ
1617 Mail Service Center
Raleigh, NC. 27699-1617
OM' P91
Public Utilities
1630 US #1 Hwy
Youngsville, NC 27596
Phone: [phone]
Fax: [phone]
www.frankiincountync.us
(/(1TV fropi-kr
e
ebAliAtjj
v�66 rP a(lils
7'it4
6/ /
Re: Request for Minor Modification to NPDES permit #NC00069311
Mr. Belnick,
In order to reduce operating costs at the Franklin County WWTP, I would like to request a Minor
Modification to our NPDES permit NC 00069311.
Since our flows have never approached the levels predicted a decade ago, we would like to reduce
our permitted discharge in order to reduce sampling frequency and dilution required on our bioassay.
We would like to propose a tiered approach, reducing our permitted flow to one MGD until such
time as our monthly average reaches that level, then step up to two MGD and so forth.
We are currently a three MGD, grade 4 plant with a monthly average flow of 0.3783MGD over the
last 5 years. Our maximum monthly average flow for that same time period was .662 MGD in
November of 2006. Our minimum monthly average was .312 MGD in December of 2010. Our
tributary flow is only 12% of what has been permitted to Franklin County WWTP.
Due to current economic conditions with no foreseeable relief in sight, we would like to reduce our
monitoring frequency for BOD 5, Fecal Coliform, Ammonia and TSS to 3 days per week and reduce
00 k our Bio Assay dilution to 49 percent, These changes would be a significant savings to Frankl n —"
I' I n County and we would greatly appreciate your consideration in this matter
0().
If you have questions concerning this matter, please feel free to contact me directly @ 919-556-6177
or furthermore my WWTP Superintendent Steve Styers @ 919-494-5850.
1
JUN 6 2011
DENR WATtt . t, JALt Pr'
POINT SOURCE 3RANCH

Sincerely,
i
J. Bryce endenhall
Director
Franklin County Public Utilities
cc: Stephen Phillips, FCPU Manager
Steve Styers, FCPU WWTP Superintendent