NC0063096_Permit Modification_20151106

WE We NCCTO630%
North Carolina Department of Environmental Quality
Pat McCrory Donald R. van der Vaart
Governor Secretary
November 6, 2015
Mr. Seann Byrd
Water Quality Director
Town of Holly Springs
P.O.Box 8
Holly Springs, NC 27540
Subject: NPDES Permit Modification- Final
Permit NCO063096
Utley Creek WRF
Wake County
Facility Class 4
Dear Mr. Byrd:
Division personnel have reviewed and approved your permit modification request for outfall relocation at
expanded flows. Accordingly, we are forwarding the attached NPDES permit modification. This permit
modification 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).
There are no additional changes to the draft permit modification dated September 8, 2015, and there were
no comments received during the 30-day public comment period. Therefore, the following changes to the
current permit become effective December 1, 2015:
• Delete requirement for outfall relocation to further downstream in Utley Creek (below Greentree
Reservoir) at expanded flows, based on water quality modeling results showing satisfactory water
quality with future discharges at current location.
• Add electronic DMR (eDMR) reporting requirement, within 270 days of permit modification
effective date.
• Add Dam Modification Reopener to address the potential for future changes in stream hydrology
based on Duke Energy dam operations.
• Add Downstream Water Quality Reopener to address the potential need for mitigation if future
water quality violations occur downstream due to Holly Springs WRF discharges.
• Update the Chronic Toxicity Special Condition language.
• Update the Effluent Pollutant Scan Special Condition language to include reminder on second
species toxicity testing requirement with next renewal application in 2016.
1601 Mail Service Center, Raleigh, North Carolina 27699-1601
Phone: [phone] Internet: www.nodenr.gov
An Equal Opportunity 1 Affirmative Action Employer

Mr. Seann Byrd
November 6, 2015
Page 2 of 2
• Modify Instream Monitoring locations and sampling requirements, based on change in outfall
location and subsequent need to evaluate model predictions in the future. This monitoring cannot be
waived based on membership in the MCFRBA.
If any parts, measurement frequencies or sampling requirements contained in this permit modification 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 any other Federal,
State, or Local governmental permits that may be required.
If you have any questions concerning this permit modification, please contact Tom Belnick at telephone
number [phone] or at email [e-mail].
Sincerely,
-6
z �641,
�Jay Zimmerman, P.G.
�Director, Division of Water Resources
cc: NPDES Files
Central Files
Ec: EPA Region 4 (e-copy) Permit Mod + Boilerplate, SIC 4952
DWR/Raleigh Regional Office/Water Quality, Danny Smith
DWR/WSS/Aquatic Toxicology Branch, Susan Meadows
DWR/WSS/Ecosystems Branch, Carrie Ruhlman

Permit NCO063096
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
NPDES 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 Holly Springs
is hereby authorized to discharge treated wastewater from a facility located at the
Utley Creek Water Reclamation Facility
150 Treatment Plant Road
Holly Springs
Wake County
to receiving waters designated as Utley Creek in the Cape Fear River Basin in accordance with effluent
limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof.
This permit modification shall. become effective December 1, 2015.
This permit and authorization to discharge shall expire at midnight on July 31, 2016.
Signed this day November 6, 2015:
�rirector' Jay Zimmerman, P.G.
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 12

Permit NCO063096
SUPPLEMENT TO PERMIT COVER SHEET
The exclusive authority to operate this facility arises under this NPDES permit. The conditions,
requirements, terms and provisions of this NPDES permit govern surface water discharges from this
facility. All previous NPDES permits issued to this facility bearing this permit number, whether for
operation or discharge, are hereby revoked.
The Town of Holly Springs is hereby authorized to:
1. Continue to operate an existing 2.4 MGD wastewater treatment facility located in Holly Springs at 150
Treatment Plant Road in Wake County. This facility discharges through outfall 001 and includes the
following wastewater treatment components:
• Mechanical bar screens
• Centrifugal grit chambers
• Anaerobic phosphorus removal basins
• Primary anoxic basins
• Carrousel oxidation basins
• Secondary anoxic basins
• Reaeration basins
• Chemical feed system with bulk chemical storage
• Secondary clarifiers
• Tertiary filtration
• UV disinfection system
• Cascade aerator
• RAS fine screenings process
• Cannibal solids reduction tank
• Solids stabilization/storage basin
2 After receiving an Authorization to Construct from the Division, construct and operate facilities giving
the system a treatment capacity of 6.0 MGD; and
3. After receiving an Authorization to Construct from the Division, construct and operate facilities giving
the system a treatment capacity of 8.0 MGD; and
4. Discharge from said treatment works (via Outfall 001) into Utley Creek, a class C stream in the Cape
Fear River Basin, at the location specified on the attached map.
Page 2 of 12

Permit NCO063096
A (1) - EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Outfall 001)
Beginning upon the effective date of this permit and lasting until expansion above 2.4 MGD or permit
expiration,. the permittee is authorized to discharge treated wastewater from outfall 001. Such
discharges shall be limited and monitored$ by the permittee as snecifiPrJ hPlnw-
F ;LU
Li MITS
IVIONIT�RING REW E
QUIRE
C_ -
o n#hly '
Wee ly
a _ k
Daily
e�
Measurer�en
-.owl
mP1eSa
ple
`
verage
_.
Avera e��
t: .. 9� ss�
;Maximum'
"� ''
: SF equepcy
T e
Flow
2.4 MGD
Continuous
Recording
I or E
BOD, 5 day, 20°C 2
(April 1— October 31
5.0 mg/L
7.5 mg/L
Daily
'Composite
I and E
BOD, 5 day, 20°C 2
(November 1 - March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I and E
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
Daily
Composite
I and E
NH3 as N
(April 1— October 31
1.0 mg/L
3.0 mg/L
Dail y
Composite
E
NH3 as N
November 1 — March 31
2.0 mg/L
6.0 mg/L
Daily
Composite
E
Dissolved Oxygen
Daily average not less than 6.0 mg/L
Daily
Grab'
E
PH
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Fecal irm
200/100 mL
400/100 mL
Daily
Grab
E
(geometric mean
Temperature °C
Daily
Grab
E
Total Residual Chlorine 3
17 lag/L
Daily
Grab
E
Conductivity
Daily
Grab
E
Total Nitrogen (TN)
_(TKN + NOa-N + NO2-N 4,5
43,835 Ibs/yr
Weekly
Composite
E
Total Phosphorus (fP) 5
3653 Ibs/yr
Weekly
Composite
E
Total Copper
Quarterly
Composite
E
Total Zinc
Quarterly
Composite
E
Chronic Toxicitys
Quarterly
Composite
E
Effluent Pollutant Scan?
n ,.a..
Monitor and Report
Footnote 7
Footnote 7
E
1 YMLIU0.
1. I = Influent; E = effluent. See A (4) for instream monitoring requirements.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
3. Total residual chlorine shall be monitored only if chlorine is added to the treatment process. The Division shall consider all
effluent TRC values reported below 50 lag/L 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.
4. For a given wastewater sample, TN = TKN + NO,3-N + NO--,N, where TN is total nitrogen, TKN is total Kjeldahl Nitrogen, and
NO3-N and NO2-N are nitrate and nitrite nitrogen, respectively. TN load is the mass quantity of total nitrogen discharged in a
given time period. See condition A (6) of this permit.
5. See Special Condition A (6).
6. Chronic Toxicity (Cerrodaphnia) P/F at 90% with testing in February, May, August and November; see A (7).
7. The permittee shall perform three effluent pollutant scans during the term of this permit, see A (8).
8. No later than 270 days from the effective date of this permit modification, begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A(9).
There shall be no discharge of floating solids or foam in other than trace amounts.
Page 3 of 12

I r
Permit NCO063096
A (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Outfall 001)
Beginning upon expansion above 2.4 MGD and lasting until permit expiration or expansion, the
permittee is authorized to discharge treated wastewater from outfall 001. Such discharges shall be
limited and monitored by the permittee as specified below-
CIARACTERISTICS
_ �- :7.• .,_.,_
7,
LIMITS
- _�..=.,.r4
MONITORING REQUIREMENTS
-=-
Measurement 'Sa nple Sample`
Fr uenc T e
YP Location
,.�
Monthly
Average
V1�eekly'
Average`
�..
Daily
Maximum ;_
Flow
6.0 MGD
Continuous
Recording
I or E
BOD, 5 day, 20°C 2
(April 1— October 31
5.0 mg/L
7.5 mg/L
Daily
Composite
I and E
BOD, 5 day, 200C 2
(November 1 - March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I and E
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
Daily
Composite
I and E
NH3 as N
(April 1— October 31
1.0 mg/L
3.0 mg/L
Daily
Composite
E
NH3 as N
November 1 — March 31
2.0 mg/L
6.0 mg/L
Daily
Composite
E
Dissolved Oxygen
Daily average not less than 7.0 mg/L
Daily
Grab
E
pH
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Fecal Coliform
(geometric mean
200/100 mL
400/100 mL
Daily
Grab
E
Temperature °C
Daily
Grab
E
Total Residual Chlorine a
17 pg/L
Daily
Grab
E
Conductivity
Daily
Grab
E
TKN
Monitor and Report (mg/L)
Weekly
Composite
E
NOs-N + NO2-N
Monitor and Report (mg/L)
Weekly
Composite
E
Total Nitrogen4
5.0 mg/L
Weekly
Composite
E.
Total Phosphorus
0.5 mg/L
Weekly
Composite
E
Orthophosphorus
0.27 mg/L
Weekly
Composite
E
Total Copper
Quarterly
Composite
E
Total Zinc
Quarterly
Composite
E
Chronic Toxicity5
Quarterly
Composite
E
Effluent Pollutant Scans
Monitor and Report
Footnote 6
Footnote 6
E
ivotes:
1. I = Influent; E = effluent. See A (4) for instream monitoring requirements.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
3. Total residual chlorine shall be monitored only if chlorine is added to the treatment process. The Division shall consider all
effluent TRC values reported below 50 pg/L 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.
4. For a given wastewater sample, TN = TKN + NO3-N + NO.—N, where TN is total nitrogen, TKN is total Kjeldahl Nitrogen, and
NO3-N and NO2-N are nitrate and nitrite nitrogen, respectively.
5. Chronic Toxicity (Cedddaphnia) P/F at 90% with testing in February, May, August and November; see A (7).
6. The permittee shall perform three effluent pollutant scans during the term of this permit, see A (8).
7. No later than 270 days from the effective date of this permit modification, begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A(9).
There shall be no discharge of floating solids or foam in other than trace amounts.
Page 4 of 12

Permit NCO063096
A (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Outfall 001)
Beginning upon expansion above 6.0 MGD and lasting until permit expiration, the permittee is
authorized to discharge treated wastewater from outfall 002. Such discharges shall be limited and
monitored7 by the permittee as specified below*
E F 'l�E,l
CHARACTERISTICS
LIMITS ,
r MONIT9RING REQUIREMENTS .'
Monthly
Average
Weekly
Average
Daily.
Maximum:.
Measurement'
Frequency
Sample3
Type
ple
L_ ocatioh�
Flow
8.0 MGD
Continuous
Recording
I or E
BOD, 5 day, 20°C 2
(April 1 — October 31
5.0 mg/L
7.5 mg/L
Daily
Composite
I and E
BOD, 5 day, 20°C 2
(November 1 - March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
1 and E
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
Daily
Composite
I and E
NH3 as N
(April 1 — October 31
1.0 mglL
3.0 mg/L
Dail Y
Composite
E
NH3 as N
November 1 — March 31
2.0 mg/L
6.0 mg/L
Dail Y
Composite
E
Dissolved Oxygen
Daily average not less than 7.0 mg/L
Daily
Grab
E
pH
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Fecal irm
(geometric mean
200/100 mL
400/100 mL
Daily
Grab
E
Temperature °C
Daily
Grab
E
Total Residual Chlorine 3
17 pg/L
Daily
Grab
E
Conductivity
Daily
Grab
E
TKN 4
Monitor and Report (mg/L)
Weekly
Composite
E
NO3-N + NO2-N 4
Monitor and Report (r g/L)
Weekly
Composite
E
Total Nitrogen4
5.0 mg/L
Weekly
Composite
E
Total Phosphorus
0.5 mg/L
Weekly
Composite
E
Orthophosphorus
0.27 mg/L
Weekly
Composite
E
Total Copper
Quarterly
Composite
E
Total Zinc
Quarterly
Composite
E
S
Chronic Toxicity
Quarterly
Composite
E
Effluent Pollutant Scans
Alnfn�•
Monitor and Report
Footnote 6
Footnote 6
E
1.v` I = Influent; E = effluent. See A (4) for instream monitoring requirements.
2. - The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
3. Total residual chlorine shall be monitored only if chlorine is added to the treatment process. The Division shall consider all
effluent TRC values reported below 50 pg/L 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.
4. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is total nitrogen, TKN is total Kjeldahl Nitrogen, and
NO3-N and NO2-N are nitrate and nitrite nitrogen, respectively.
5. Chronic Toxicity (Ceriodaphnia) P/F at 90% with testing in February, May, August and November, see A (7)
6. The permittee shall perform three effluent pollutant scans during the term of this permit, see A (8).
7. No later than 270 days from the effective date of this permit modification, begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A(9).
There shall be no discharge of floating solids or foam in other than trace amounts.
Page 5of12

Permit NCO063096
A (4) INSTREAM MONITORING REQUIREMENTS
Parar4eters
Measurement Frequency
Sample Type.
Sample
Dissolved Oxygen
Temperature °C
3/Week (June -September)
Grab
pH
Weekly (October -May)
U, D1
Conductivity
Dissolved Oxygen
Temperature °C
pH
Conductivity
BOD5
Ammonia
TKN
Monthly
Grab
D21 D3
NO2+NO3
Total N (mg/I as N)
Orthophosphate
Total P
Chlorophyll -a, ug/l
Turbidity, NTU
Notes:
1. U (UTC-1): Utley Creek upstream of WWTP, Lat: 35.64494N Long: 78.84963W
D1 (UTC-1A): Utley Creek immediately downstream of WVVTP, Lat 35.64486N Long: 78.85276W
D2 (UTC-5): Thomas Mill Pond, Lat: 35.64633N, Long: 78.87128W
D3 (UTC-7): Utley Creek below Green Tree Reservoir Dam, Lat: 35.64481 N Long: 78.88473W
UTC equivalent sample locations from Holly Springs WRF Discharge Evaluation (CH2M Hill 2014)
The Permittee is a member of the Middle Cape Fear River Basin Association (MCFRBA). Because of
site specific concerns, sampling at these instream locations may not be waived or exempted by
participation in the MCFRBA monitoring program. These data may be collected and submitted by the
MCFRBA but remain the responsibility of the Permittee.
Page 6 of 12

Permit NCO063096
SUPPLEMENT TO EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A (5) CAPE FEAR BASIN NUTRIENT REOPENER
Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in the North
Carolina Administrative Code at 15A NCAC 2H.0112 (b) (1) and 2H.0114 (a) and Part II sections B-12
and B-13 of this permit, the Director of DWR may reopen this permit to require supplemental nutrient
monitoring of the discharge. The purpose of the additional monitoring will be to support water quality
modeling efforts within the Cape Fear River Basin and shall be consistent with a monitoring plan
developed jointly by the Division and affected stakeholders. In addition, the results of water quality
modeling may require that additional limits for total nitrogen and total phosphorus be imposed in this
permit upon renewal.
A (6) CALCULATION OF TOTAL NITROGEN AND TOTAL PHOSPHORUS LOADS
a. The Permittee shall calculate monthly and annual TN and TP Loads as follows:
i. Monthly TN (or TP) Load (Ibimo) = TN (or TP) x TMF x 8.34
where:
TN or TP = the average Total Nitrogen (or Total Phosphorus)
concentration (mg/L) of the composite samples collected
during the month
TMF = the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
ii. Annual TN (or TP) Load (lb/yr) = Sum of the 12 Monthly TN (or TP) Loads for the calendar
year
b. The Permittee shall report monthly Total Nitrogen and Total Phosphorus results (mg/L and lb/mo)
in the discharge monitoring report for that month and shall report each year's annual results (lb/yr)
in the December report for that year.
A (7) 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 90%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or
"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or
subsequent versions. The tests will be performed during the months of February, May, August, and November.
These months signify the first month of each three-month toxicity testing quarter assigned to the facility. Effluent
sampling for this testing must be obtained during representative effluent discharge and shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
Page 7of12

Permit NC0063096
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 H Chronic Whole Effluent Toxicity Test
Procedure" (Revised -December 2010) 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 TGP311 for the
pass/fail results and THP311 for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, NC 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water 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 Water 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. Assessment of toxicity compliance is based on the toxicity testing quarter,
which is the three month time interval that begins on the first day of the month in which toxicity testing is required
by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement 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, 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.
Page 8 of 12

Permit NCO063096
A (8) EFFLUENT POLLUTANT SCAN
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan
must be performed in each of the following years: 2013, 2014, and 2015. 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)
Trans-1,2-dichloroethylene
Bis (2-chloroethyl) ether
Chlorine (total residual, TRC)
1,1-dichloroethylene
Bis (2-chloroisopropyl) ether
Dissolved oxygen
1,2-dichloropropane
Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite
1,3-dichloropropylene
4-bromophenyl phenyl ether
Kjeldahl nitrogen
Ethylbenzene
Butyl benzyl phthalate
Oil and grease
Methyl bromide
2-chloronaphthalene
Phosphorus
Methyl chloride
4-chlorophenyl phenyl ether
Total dissolved solids
Methylene chloride
Chrysene
Hardness
1,1,2,2-tetrachloroethane
Di-n-butyl phthalate
Antimony
Tetrachloroethylene
Di-n-octyl phthalate
Arsenic
Toluene
Dibenzo(a,h)anthracene
Beryllium
1, 1, 1 -trichloroethane
1,2-dichlorobenzene
Cadmium
1,1,2-trichloroethane
1,3-dichlorobenzene
Chromium
Trichloroethylene
1,4-dichlorobenzene
Copper
Vinyl chloride
3,3-dichlorobenzidine
Lead
ACID -EXTRACTABLE
Diethyl phthalate
COMPOUNDS:
Mercury (EPA Method 1631 E)
P-chloro-m-cresol
Dimethyl phthalate
Nickel
2-chlorophenol
2,4-dinitrotoluene
Selenium
2,4-dichlorophenol
2,6-dinitrotoluene
Silver
2,4-dimethylphenol
1,2-diphenylhydrazine
Thallium
4,6-dinitro-o-cresol
Fluoranthene
Zinc
2,4-dinitrophenol
Fluorene
Cyanide
2-nitrophenol
Hexachlorobenzene
Total phenolic compounds
4-nitrophenol
Hexachlorobutadiene
Volatile organic compounds:
Pentachlorophenol
Hexachlorocyclo-pentadiene
Acrolein
Phenol
Hexachloroethane
Acrylonitrile
2,4,6-trichlorophenol
Indeno(1,2,3-cd)pyrene
Benzene
Base -neutral compounds:
Isophorone
Bromoform
Acenaphthene
Naphthalene
Carbon tetrachloride
Acenaphthylene
Nitrobenzene
Chlorobenzene
Anthracene
N-nitrosodi-n-propylamine
Chlorodibromomethane
Benzidine •
N-nitrosodimethylamine
Chloroethane
Benzo(a)anthracene
N-nitrosodiphenylamine
2-chloroethylvinyl ether
Benzo(a)pyrene
Phenanthrene
Chloroform
3,4 benzofluoranthene
Pyrene
Dichlorobromomethane
Benzo(ghi)perylene
1,2,4-trichlorobenzene
1, 1 -dichloroethane
Benzo(k)fluoranthene
1,2-dichloroethane
Bis (2-chloroethoxy) methane
Reporting. Test results shall be reported on DWQ 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: NC DENR / DWQ / Central Files, 1617 Mail Service Center, Raleigh, North Carolina
27699-1617.
Page 9of12

Permit NCO063096
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal facilities
that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional toxicity
testing requirements specified in Federal Regulation 40 CFR 122.210)(5). The US EPA requires four (4) toxicity
tests for a test organism other than the test species currently required in this permit. The multiple species tests
should be conducted either quarterly for a 12-month period prior to submittal of the permit renewal application, or
four tests performed at least annually in the four and one half year period prior to the application. These tests shall
be performed for acute or chronic toxicity, whichever is specified in this permit. The multiple species toxicity test
results shall be filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional
toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of
EPA Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting
Unit.
A (9) 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.) Wl
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
Page 10 of 12

Permit NC0063096
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 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.or web/wq/admin/boo/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.)
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. (I 1.)(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.or web/wq/admin/bodipu/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. "
Page 11 of 12

Permit NCO063096
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].
A (10) DAM MODIFICATION REOPENER
If Duke Energy modifies the operations at Thomas Millpond or Greentree Reservoir and results in
changes to stream hydrology, then the permit may be reopened to evaluate the impact of such changes
on the water quality of Thomas Millpond and Greentree Reservoir.
A(11). DOWNSTREAM WATER QUALITY REOPENER
If water quality standards violations are reported in downstream waters and the discharge from Holly
Springs WRF is identified as a causative factor, then the permit may be reopened and mitigative
measures, including additional treatment or change in outfall location, may be required.
Page 12 of 12

Map of Instream Monitoring Locations
NPDES Permit NC0063096
Holly Springs WRF
Notes:
U (UTC-1): Utley Creek upstream of WWTP, Let: 35.64494N Long: 78.84963W
D1 (UTC-IA): Utley Creek immediately downstream of WWTP, Lat 35.64486N Long: 78.85276W
D2 (UTC-5): Thomas Mill Pond, Let: 35.64633N, Long: 78.87128W
D3 (UTC-7): Utley Creek below Green Tree Reservoir Dam, Let: 35.64481N Long: 78.88473W
UTC equivalent sample locations from Holly Springs WRF Discharge Evaluation (CH2M Hill 2014)

NP60 Pelmf t#lop(NM I 1I b/Z91S — 3y�l16m-epfMklml;
NC DENR / DWR / Complex Permits Unit
FACT SHEET FOR NPDES PERMIT MODIFICATION
NPDES Permit No. NCO063096
Facility Information
Applicant/Facility Name:
Town of Holly Springs
Utley Creek Water Reclamation Facility WRF
Applicant Address:
P.O. Box 8; Holly Springs, NC 27540
Facility Address:
150 Treatment Plant Road
Flow (MGD):
Current 2.4 MGD with phased 6 and 8 MGD sheets
Type of Waste:
Municipal
FacilityClass:
4
Count :
Wake
Permit Request:
Modification
lRegional Office:
Raleigh
Stream Characteristics
ReceivingStream
UtleyCreek
Stream Classification:
C
Drainage Area (sq. mi.)
0.73
Drainage basin:
Cape Fear
Summer 7Q10 (cfs)
0.11
Subbasin
03-06-07
Winter 7Q10 (cfs)
0.25
8-Digit HUC
03030004
30Q2 cfs
0.32
303 d Listed
No
Average Flow cfs
0.82
State Grid
Apex
IWC (%
97%
JUSGS To o Quad
E 23 NE
Permit Action- Modification of Discharge Location at Expanded Flows
This facility currently discharges up to 2.4 MGD into the headwaters of Utley Creek adjacent to the
facility, which then flows through Thomas Millpond and Greentree Reservoir, and into the White Oak
Creek arm of Harris Lake in the Cape Fear River Basin. The current permit includes phased flows of 6
and 8 MGD, but requires outfall relocation to below Greentree Reservoir prior to phased expansion. This
permit modification would remove the requirement to relocate the outfall further downstream upon
expansion. Based on QUAL2K modeling results that indicate that water quality will be protected by
retaining the discharge at the current location, the Division supports this modification request. There are
no proposed changes to effluent limitations.
Permit History
• Permit Reissuance 2011. The current NPDES permit for the Town of Holly Springs Utley Creek
Water Reclamation Facility (WRF) was issued in October 2011. This permit authorized a
discharge of up to 2.4 MGD via Outfall 001 to Utley Creek, a Class C waterbody in the Cape
Fear River Basin. This permit expires July 31, 2016.
• Permit Modification 2012. The current NPDES permit was modified in April 2012. This
modification authorized expanded phased discharges of 6.0 and 8.0 MGD via Outfall 002 to be
located further downstream in Utley Creek, below Thomas Millpond/Greentree Reservoir. A
SEPA FONSI (Finding of No Significant Impact) was issued by NCDENR for this proposed
expansion on November 9, 2011. The requirement for outfall relocation at expanded flows was
based on historical concerns regarding eutrophication in Thomas Millpond/Greentree Reservoir.
• Permit Modification Request 2015. The Permittee is now requesting another permit modification
(letter request dated April 20, 2015) to remove the requirement for outfall relocation at expanded
flows. An amended Environmental Assessment was submitted, and a subsequent FONSI for this
Fact Sheet- NCO063096
Page 1

outfall location was issued on March 24, 2015. The amended FONSI concludes that based upon
the additional evaluations conducted, no significant impacts are expected to occur to water quality
in Utley Creek from continuing to discharge near the current location, adjacent to the plant. The
Town is requesting this alternative outfall option due to the high cost of pipeline construction to
route wastewater further downstream, and due to potential negative environmental effects. The
Division's decision to evaluate the request to keep the discharge at its current location is based on
the assumption that there has been a change in stream hydrology due to the breaching of the
Thomas Millpond dam.
Permit Modification Evaluation.
• The Town of Holly Spring's consultant (CH2MHill) submitted the following Technical
Memorandum in support of this change in oufall location request: 1) Workplan to Evaluate Holly
Springs Water Reclamation Facility Discharge Location Alternatives (April 15, 2014); 2)
Monitoring of Utley Creek to Support Analysis of Potential Discharge Locations (June 16, 2014);
and 3) Holly Springs Water Reclamation Facility Discharge Evaluation (September 24, 2014)
• The Discharge Evaluation Report (attached) included water quality modeling performed with a
calibrated/validated QUAL2K model. The modeling was supported by time -of -travel dye study,
weekly instream monitoring during Summer 2014, and a bathymetric survey of Thomas
Millpond. The QUAL2K stream modeling indicates that the expanded flow at the current
discharge location would improve water quality conditions through Thomas Millpond (due to
reduced residence time) and the dissolved oxygen condition within Utley Creek would be
maintained above the water quality standard.
• The Thomas Millpond is now much smaller as a result of a partial dam break approximately 10
years ago. The estimated hydraulic residence time for Thomas Millpond is approximately 1 day.
• If the Division maintains the requirement for outfall relocation further downstream at expanded
now, it would result in reduced baseflow in upper Utley Creek and Thomas Millpond, since the
WRF provides a stable baseflow in these headwaters. Reduced flows could impact the aquatic
habitat in the creek and adjacent wetlands. Additionally, construction of a 2.2 mile effluent
pipeline to accommodate outfall relocation would potentially impact wetland function. Finally,
relocation of the discharge to below Greentree Reservoir would deliver more nutrients directly to
Harris Lake.
• This modification proposes to maintain the outfall near its current location, within the WRF site.
This outfall will retain the same designation (Outfall 001) with new coordinates Lat 35d 38' 41
Long 78d 51' 09". An improved discharge cascade structure will be required to accommodate
future flows. This will require an Authorization to Construct (ATC) permit, following issuance
of this permit modification.
• Add Reopener Condition/Dam Operations to address potential of future hydrologic changes. A
partial dam failure at Thomas Millpond in early 2000s has altered hydrology patterns and
shortened retention time within the pond. There are currently no plans to repair the dam at
Thomas Millpond. Greentree Reservoir is seasonally impounded by Duke Energy during late fall
and winter, and was considered as a stream segment in the model. Duke Energy owns a majority
of the land including the parcels that contain Thomas Millpond and Greentree Reservoir. If Duke
Energy management operations change for Thomas Millpond or Greentree Reservoir, the location
of the discharge may need to be re-evaluated.
• Add Reopener Condition/Downstream Water Quality if water quality standards are violated in
downstream waterbodies due to discharges from Holly Springs WRF. Mitigative measures may
be required, including additional treatment or outfall relocation.
• Add eDMR reporting requirement, effective 270 days from effective date.
Fact Sheet- NCO063096
Page 2

• Modify Instream Monitoring Location/Requirements based on the outfall remaining at original
location. Instream monitoring cannot be waived based on participation in the Middle Cape Fear
River Basin Association (MCFRBA). Instream data will be used to verify model predictions.
• There are no proposed changes to permit effluent limits with this permit modification.
Summary of Proposed Changes to Permit
• Delete outfall relocation requirement to downstream location for phased flows.
• Add Reopener Condition for Dam Operations
• Add Reopener Condition for Downstream Water Quality
• Add eDMR reporting requirement.
• Modify Instream Monitoring Requirements based on outfall location change.
• Update Chronic Toxicity Special Condition Language
• Update Effluent Pollutant Scan Special Condition
Fact Sheet Attachment
• Attach Technical Memorandum: Holly Springs Water Reclamation Facility Discharge Evaluation
(CH2MHill, September 24, 2014)
Proposed Schedule of Issuance
Draft Permit Mod to Public Notice: September 8, 2015
Permit Scheduled to Issue: November 2, 2015
Effective Date: November 2, 2015
NPDES Unit Contact
If you have questions regarding any of the above information or on the attached permit, please contact
Tom Belnick at [phone] or [e-mail].
Fact Sheet- NC0063096
Page 3

AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA
COUNTY OF WAKE
Ad Number
0001961863
Advertiser Name: DEPARTMENT OF WATER RESOURCES
Address: attn Wren Thedford
1617 MAIL SERVICE CENTER PROTECTION SECTION/ POINT
RALEIGH, NC 276991617
Before the undersigned, a Notary Public of Wake
County North Carolina, duly commissioned and
authorized to administer oaths, affirmations, etc.,
personally appeared R. C. Brooks, who being duly
sworn or affirmed, according to law, doth depose
and say that he or she is Accounts Receivable
Specialist of The News & Observer Publishing
Company a corporation organized and doing
business under the Laws of the State of North
Carolina, and publishing a newspaper known as
The News & Observer, in the City of Raleigh, Wake
County and State aforesaid, the said newspaper in
which such notice, paper, document, or legal
The. Town of Fuaua, Varthe reaaested
advertisement was published was at the time of renewal of as FUq NC00or 'orltsTer-
ribIa Creek W WTP in Woke Count,; this
poppeom,iBed I charn, Is treated munici
each and every such publication, a newspaper Nelu eRtiver Basin. Terrible Creek in the
meeting all of the requirements and qualifications The Town mitof H011, Springs hae reaaeet-
of Section 1-597 of the General Statutes of North in ace C. nt' irc 5fUlfo Creek RF
mH NC0g63Wb for Its Utley Creek WRF
in Wake County; this kcilifr discharges
treated municipal wastewater to Utle,
Carolina and was a qualified newspaper within the Creek in the Caps, Fear River Basin.
f th G I Statutes N80: September 14, 2015
meaning of Section 1-597 o e enera
of North Carolina, and that as such he or she gljvlL015
makes this affidavit; and is familiar with the books,
files and business of said corporation and by ,,o`Oo4D.Hak'',
reference to the files of said publication the
attached advertisement for DEPARTMENT OF
WATER RESOURCES was inserted in the = Nolafy Public
Woke county
aforesaid newspaper on dates as follows:
'.7H cP�'�or°
09/1412015 C/p
R. C. Brooks, Acc a nts Receivable Specialist
Wake County, North Carolina
Sworn to and subscribed before me
This 15th day of September, 2015
My Commission Expires: FEB
N tary Signature

Mod-e 1►aj���Gwc✓ j�oll7.��.���—ins���� 9�Zot�
Belnick, Tom
From: Behm, Pamela
Sent: Tuesday, September 01, 2015 9:25 AM
To: Belnick, Tom
Subject: RE: Holly Springs/Instream Monitoring
Looks good Tom.
Pam
-----Original Message -----
From: Belnick, Tom
Sent: Thursday, August 27, 2015 6:21 PM
To: Behm, Pamela
Cc: Ruhlman, Carrie
Subject: FW: Holly Springs/Instream Monitoring
Pam- let me know if this meets your needs for location/frequency Existing UTC-7 (D3) is below Greentree Reservoir
dam.
Carrie- fyi.
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
-----Original Message -----
From: Tom Belnick [mailto:[e-mail]]
Sent: Thursday, August 27, 2015 6:11 PM
To: Belnick, Tom
Subject: Message from "RNP0026733F34F1"
This E-mail was sent from "RNP0026733F34F1" (Aficio MP C4502).
Scan Date: 08.27.2015 18:11:17 (-0400)
Queries to: [e-mail]

Belnick, Tom
From: [e-mail]
Sent: Thursday, August 27, 2015 11:41 AM
To: Belnick, Tom
Cc: [e-mail]; [e-mail]
Subject: RE: NPDES/Instream Coordinates
Tom,
Here are the coordinates for the sampling stations. Please let me know if there's anything else you need.
Klaus
ID
Name
Latitude
Longitude
UTC-1
Utley Creek upstream of WWTP
35.64494N
78.84963W
p
D
Utley Creek immediately downstream of
35.64486N
78.85276W
UTC-1A
WWTP (Field parameters only)
Utley Creek between WWTP and Thomas Mill
35.64395N
78.85734W
UTC-4
Pond
35.64732N
78.86708W
UTC-4A
Utley Creek above Thomas Mill Pond
UTC-5 UZ
Thomas Mill Pond
35.64633N
78.87128W
Immediately downstream of Thomas Mill
35.64610N
78.87189W
UTC-5A
Pond (Field parameters only)
35.64481N
78.88473W
UTC-7
Utley Creek near Green Tree Reservoir Dam
Utley Creek above White Oak Creek arm of
35.64302N
78.89114W
UTC-8
Harris Lake
Klaus Albertin
Senior Technologist
Direct 919.760.1748
Fax [phone]
3120 Highwoods Boulevard
Raleigh, NC 27604
www.ch2m.com
A Please consider the environment before printing this email
From: Belnick, Tom fmailto:[e-mail]]
Sent: Thursday, August 27, 201510:55 AM
To: Kendra Parrish ([e-mail]); sea [e-mail]; Albertin, Klaus/RAL
Subject: NPDES/Instream Coordinates
Folks- I will have the Draft NPDES permit modification out to public notice on Sept 8th. Can you provide the lat/long
coordinates for the instream sampling stations UTC-1 through UTC-8. Thanks.
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

HOLLY SPRINGS WATER RECLAMATION FACILITY DISCHARGE EVALUATION
analysis of water chemistry were performed for 10 weeks on a weekly basis from June'24, 2014 through
September 10, 2014. The parameters collected at each station are listed in Table 2. The data are tabulated in
Attachment B.
Table 2
Holly Springs Water Reclamation Facility Discharge Evaluation
Water Quality Monitoring Station Description
l
Station Parameters Comment
IfKI)4 UTC-1 Field parameters', chemical parmeters2
UTC-IA
Field parameters'
UT
Field parameters', chemical parmeters2
UTC-4A
Field parameters', chemical parmeters2
P-0)
UTC-5
Field parameters', chemical parmeters2
UTC-5A
Field parameters'
Field parameters', chemical parmeters2
UTC-8
Field parameters', chemical parmeters2
Directly above WRF
Directly below WRF
.geAICIA WldTf-'�7_ T_MP
Above Thomas Millpond
Thomas Millpond
DkIglU below Thomas Millpond
Above White Oak Creek Arm of
Harris Lake
' Temperature, DO, pH, Conductivity
2 5-day Biochemical Oxygen Demand (CBOD), Total Suspended Solids (TSS), Ammonia Nitrogen, Total Kjeldahl Nitrogen
(TKN), Nitrate -nitrite, Total Nitrogen, Orthophosphate, Total Phosphorus, Alkalinity, Chlorophyll a, Turbidity
Bathymetric Survey and Stream Cross Sections
The bathymetric survey was performed on June 27, 2014 using a Trimble RTK Base and Rover Global
Positioning System and a Hydrolite Sonarmite Depth Sounder. These pieces of equipment were mounted on a
jon boat and used to measure depth and record locations along approximately 16 transects of Thomas
Millpond. Over 3,100 data points were collected to generate the map of pond bathymetry shown in Figure 2.
5

Monitoring Plan
The DWR comments requested three specific monitoring efforts:
Weekly monitoring of Utley Creek and Thomas Mill Pond for field and chemical
parameters during summer low flow conditions.
• Time of travel study to estimate flow velocities
• Bathymetric survey to characterize depths within Thomas Mill Pond
Each of these efforts is described in more detail below.
Weekly Monitoring
The proposed monitoring program is based on the monitoring program currently used by
the MCFRBA in the middle portion of the Cape Fear River basin. This monitoring will occur
on a weekly basis beginning as soon as the monitoring contract can be established and
completing at the end of August. Six primary stations will be monitored for field parameters
and chemical analyses. Two additional stations will be sampled for field parameters only.
The program will last a minimum of 10 weeks.
Sampling Stations
The Town of Holly Springs will proceed with monitoring of Utley Creek at eight locations
as described below ar0—shQwn on Exhibit-2--_ _
• UTC-1-- Utley Creek upstream of W WTP
• UTC-1A -- Utley Creek immediately downstream of W WTP (Field parameters only)
• UTC-4 -- Utley Creek between W WTP and Thomas Mill Pond
• UTC-4A — Utley Creek above Thomas Mill Pond
• UTC-5 -- Thomas Mill Pond
• UTC-5A — immediately downstream of Thomas Mill Pond (Field parameters only)
• UTC-7 -- Utley Creek near Greentree Reservoir Dam /
• UTC-8 - Utley Creek above White Oak Creek arm of Harris Lake
Stations UTC-1, UTC-4, UTC-5, and UTC-7 are existin&M2ngoring locations and provide a
asis or characterizing a system. Stations UTC-4A and UTC-8 are ad e o provide data
at locations not previously monitored but that may be important in the modeling effort
The two additional stations are intended to provide supplemental data for use in the
modeling. The station immediately downstream of the Utley Creek W WTP (UTC-1A), in
conjunction with flow and specific conductivity data for the W WTP and at the upstream
station on the day of sampling, will allow for an estimate of stream flow. Station UTC-5A
will be used to help quantify the reaeration associated with the Thomas Mill Pond spillway.

Pam PaJoh, /N4-digs cb/n/24a- /411) spy() J,� rJkQom AAA
N Monitoring stations Utley Creek Monitoring
Field Only CH21VI HILL, 2014
O Full
• Cross sections
Monitoring Requirements:
Full (BOD-5, Ammonia Nitrogen, Total Kjeldahl Nitrogen, Nitrate -nitrite,
Total Nitrogen, Orthophosphate, Total Phosphorus, Chlorophyll a,
Turbidity)
UTC-5 — cxloov� T. N\`cil' rr
UTC-7 — woJ \� �� i S WOE c�SoQl22
Physical (Temperature, DO, pH, Conductivity)
UTC-1 — o_bD,rC
UTC-1A —

RECEIVEDIDENRDWR
tee APR � 3 2 015
o o Water Quality
Permitting Sectior
THE TOWN OF
,Wo'lly & rings
April 20, 2015
Tom Belnick
Complex Permitting Unit Supervisor
Wastewater Branch/Water Quality Permitting Section
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Request for Permit Modification; NPDES Permit No. NCO063096: Town of Holly Springs; Utley Creek
Water Reclamation Facility; Wake County
Dear Mr. Belnick:
The purpose of this letter is to formally request a modification to our current permit to change the outfall location
included for the permit pages associated with the 6 mgd and 8 mgd discharge capacities. Currently, the 6 and 8 mgd
permit pages allow discharge to outfall 002, which is a discharge to Utley Creek to be located downstream of the
Greentree Reservoir. The requested modification includes a new cascade and discharge location for outfall 002 on
the current Water Reclamation Facility site, in close proximity to outfall 001.
As you are aware, we have been going through an approval process to amend the Environmental Assessment for the
Town of Holly Springs Wastewater I reatment Facility Expansion and Discharge Reiocation, which received final
approval on November 9, 2011, associated with the expansion of the Utley Creek WRF. The amended
Environmental Assessment, allowing the Town to continue to discharge near the current location on the WRF site,
was submitted to the Clearinghouse on March 201", 2015. The associated Finding of No Significant Impact has been
signed by the Division of Water Resources (DWR) Director (attached) and a letter from the NC Department of
Administration indicating that the State Environmental Policy Act process is complete is anticipated by the end of
April 2015.
The expanded outfall capacity on the WRF site will require discharging to a new effluent cascade on the property.
Design of these improvements is being initiated and we anticipate that the new location will be at the following
coordinates:
• Lat 35d 38' 41"
• Long 78d 51' 09"
Water Quality Department
128 S. Main Street • P.O. Box 8 • Holly Springs, NC 27540 • [phone] • [phone] firx
www.hollyspringsnc.us

We understand that after the NPDES permit modification is issued, the Town of Holly Springs can submit plans and
specifications for the new outfall and request that D WR issue an Authorization to Construct the new outfall and
associated facilities.
If you have any questions regarding this request, please contact me at [phone] or at
[e-mail].
Sincerely, 7
Seann Byrd
Water Quality Director
c: Danny Smith/DWR/Raleigh Regional Office
Klaus Albertin/CH2M HILL
Water Quality Department
128 S. Main Street • P.O. Box 8 • Holly Springs, NC 27540 • [phone] • [phone] fax
www.hollyspringsnc.us

FDNYI
Z�
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Governor Secretary
FINDING OF NO SIGNIFICANT IMPACT (FONSI)
Town of Holly Springs Wastewater Treatment Facility Expansion and
Discharge Location
Wake County, North Carolina
The North Carolina Environmental Policy Act (G.S. §113A) requires that the Division of Water Resources
determine whether a proposed major agency action will significantly affect the environment. The Town
of Holly Springs (Town) Wastewater Treatment Facility Expansion and associated discharge location is
such a major action.
The proposed project will increase the existing discharge from the Utley Creek Water Reclamation
Facility (UCWRF) from 2.4 million gallons per day (mgd) to 8.0 mgd, calculated as a monthly average
flow. A FONSI was issued by NCDENR for this proposed action on November 9, 2011 and the
Department of Administration concurred with this finding following ormal notice through the State
Environmental Review Clearinghouse. The resulting NPDES permit required a relocation of the existing
discharge to a specified location downstream on Utley Creek. In response, the Town has initiated the
State Environmental Policy Act environmental review process to further evaluate the location of the
UCWRF discharge through this amendment to its previous environmental assessment (EA) document.
This further evaluation is warranted to provide a better current understanding of the changes in the
Utley Creek environmental conditions (specifically, in Thomas Mill Pond) and the improved treatment
capabilities of the UCWRF. Based upon the additional evaluations conducted for this addendum, no
significant impacts are expected to occur to water quality in Utley Creek from continuing to discharge at
the current location, adjacent to the plant.
No additional impacts to the environment are expected from the proposed discharge location, its
current location, from those impacts presented in the original FONSI dated November 9, 2011(EA,
Appendix A). The impacts to natural resources discussed in the original FONSI, related to the proposed
relocation wastewater pipeline, will not be conducted.
As evidenced in the original EA and this addendum, the Town has been in full compliance with its
current NPDES permit. Keeping the current location of the discharge for the UCWRF, as presented In the
addendum to the EA, is projected to be within existing water quality standards while minimizing any
potential direct impacts resulting from a relocation. On the basis of the analysis conducted for the
environmental assessment, it has been concluded that the selected location of the discharge outfall will
not have a significant adverse effect on the quality of the environment. No environmental impact
statement. (EIS) will be prepared and this FONSI completes the environmental review record. The FONSI
and environmental assessment shall be available for inspection and comment for 30 days at the State
Clearinghouse.
1601 Mail Service Center, Raleigh, North Carqfina 27699.1601
Phone: [phone]ntemet:. ncdenr.gov
An Equal Opportunity 1 Affirmative Action Employer — Made in pan by recycW paper

Summary of FONSI for publication in the Environmental Bulletin: After completion of an environmental
assessment under G.S.113A, a FONSI has been made in the case of The Town of Holly Springs
Wastewater Treatment facility Expansion and Discharge Location. Information supporting the need for
the proposed project was reviewed, along with relative impacts, other alternative approaches and
mitigating measures.
Jay Zimmerman ate)
Director
Division of Water Resources

Belnick, Tom
From: Seann Byrd <seann. byrd@Hollyspringsnc. use
Sent: Tuesday, June 02, 2015 5:15 PM
To: Belnick, Tom
Subject: FONSI
Attachments: signed FONSI_Holly Springs VWIJTP Add.pdf
Categories: Red Category
Tom,
Attached is the signed FONSI for our requested Utley Creek WRF permit modification. I apologize for the delay. Please
let me know if you need anything further.
Thanks,
Seann Byrd
Water Quality Director
Town of Holly Springs
919-577-3151

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Belnick Tom V
I. From: Belnick, Tom
` Sent: Wednesday, December 17, 201411:30 AM
To: Brady, Harold M.
Subject: Holly Springs/EA Amendment NC0063096
From Harold M Brady (Wkcoo 0604k,
Please review the attached EA Addendum document from the Town of Holly Springs for the proposed avoidance of
relocating the current discharge location per a condition in the current NPDES permit. Please provide any comments
back to me by Wednesday, December 17. This is an internal review, but please let me know if you do not see someone
on the distribution list that should be included. Please let me know if you have any questions. Thank you.
Tom Belnick Response
I have reviewed the Amendment to the EA and have no comments. It appears the water quality modeling supports the
I
to maintain the discharge at the current outfall location. If a revised FONSI is issued, the Permittee will then
need to 1) obtain an NPDES permit modification to allow the expanded flows of 6 MGD and 8 MGD at the existing
discharge location; and 2) obtain applicable ATC/ATO permits for the expanded flows.
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
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Holly Springs EA Addendum
Modeling and Assessment Branch Review Comments
1. DWR received the final modeling report after speculative limits were written and the dissolved
oxygen limit of 6.0 mg/L was given in the speculative limits based on the draft modeling report
submitted by the Town. Upon submittal of the final modeling report, the consultant for the
Town noted that the expansion discharge limits for dissolved oxygen were changed to 7.0 mg/L
from 6.0 mg/L to be consistent with previous analyses and the existing permit (Klaus Albertin,
CH2MHill email, 12/1/14). However, there are several places in the EA Addendum that still refer
to the limit of 6.0 mg/L. It is also not clear if the modeling figures provided in the EA Addendum
reflect the 6.0 or 7.0 mg/L limit.
Either we reissue speculative limits correcting the dissolved oxygen limit to 7.0 mg/L or the
document needs to be edited to reflect the change and note that 7.0 mg/L is the appropriate
limit for dissolved oxygen (and Tom Belnick should be consulted to determine how we proceed).
2. Page 2-2: Last sentence appears to be incomplete, there is mention of an exhibit 3, but is not
provided until a later section and doesn't seem to be the same exhibit 3 as described here.
"Exhibit 3 details" is the last sentence on this page.
3. Page 3-1, Sec 3.2: Current facility can treat to 6 mgd. Is all that is needed to go from 6 to 8 mgd
a "cascade aeration discharge structure"? This needs to be clarified.
4. Appendix C, page 15: While I don't mind being mentioned by name in this document, it seems it
would be better presented by including that I commented for the Modeling and Assessment
Branch as Technical Reviewer. My name doesn't mean much by itself. Should probably just say
Modeling and Assessment Branch instead of listing names. This should be checked throughout
the document.
5. In responding to the EA Addendum, please include language that continues to push for a letter
from Duke (to Holly Springs) regarding management operations of the Thomas Millpond and
Greentree Reservoir. It would be helpful to have this letter in the final EA Addendum.
These comments are NOT editorial in regards to the EA Addendum, but should be considered in
preparing the record of decision:
6. Regardless of whether or not Duke provides a letter, a reopener clause will need to be written
into the eventual permit because the letter would not be binding anyway. If Duke management
operations change for Thomas Millpond or Greentree Reservoir, the location of the discharge
may need to be moved as per the reasons provided in previous communications with the town.
A permit reopener will also need to include language that if water quality standards violations
occur in Harris Lake, Thomas Millpond, or Greentree Reservoir, then the discharge will need to
be mitigated, through improved treatment or change in outfall location.
8. The eventual permit will need to have in -stream monitoring requirements (that cannot be
waived by participation in coalition). This is similar to language already included in the existing

permit for the expansion, however, additional monitoring locations will need to be included if
the discharge outfall stays in the current location.