NC0088366_NPDES Draft Mod Permit_20100217

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
February 17, 2010
M r. Steve Ward
Harnett County Department of Public Utilities
P.O. Box 1119 .
Lillington, North Carolina 27546
Dear Mr. Ward:
DEN FRO
FEB 2 2 2010:
DWQ
Subject: Draft of Modification to NPDES Permit
NC0088366
South Harnett Regional WWTP
Expansion
Harnett County
Pursuant to your recent request, enclosed is a copy of the draft NPDES permit
modification for your facility. I encourage you to review the draft carefully to ensure
thorough understanding of the information, conditions, and requirements it contains.
This permit modification has the following differences from your current permit:
> The expiration date has been changed to May 31, 2011, in order to comply with
the basinwide schedule.
> The Supplement to the Permit Cover Sheet has been revised to include the
equipment and processes used for wastewater treatment.
> The TRC footnote has been changed on A.(1) - 5.0 MGD. As before, if your facility
does not use chlorine or a chlorine derivative for disinfection, you do not have to
monitor for TRC, and there is no limit imposed. If in the future you do switch to
chlorine or chlorine derivative for disinfection, you must notify the Fayetteville
Regional Office, and begin monitoring for TRC. Because there are interferences
sometimes in measuring low levels of TRC in wastewater, The Division accepts
any analysis reported by a certified laboratory of less than 50 ug/ L to be in
compliance with the permit limit.
> The toxicity testing concentration on sheet A.(1) - 5.0 MGD and on sheet A.(3) has
been changed to 15% from 14% to correct an error.
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: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
One
NorthCarohna
Naturally

> A new Special Condition A.(2) and A.(4) for 15.0 MGD were created and added"to
the permit based on the speculative limits letter dated April 24, 2008. Monitoring
frequencies for a Grade IV classified facilty are used.
Concurrent with this notification, the Division is sending the draft to EPA Region 4 in
Atlanta and in-house agencies for review, and to -newspapers having general circulation in
the Harnett County area. Please provide any comments you may have regarding this draft
to DENR - DWQ, NPDES Unit no later than 30 days after receiving this draft permit.
Following the 30-day comment period, the Division will review all pertinent
comments and take appropriate action prior to issuing a final permit. If you have questions
or comments concerning the draft permit for your facility, please call me at [phone],
or you may e-mail .me at [e-mail].
If no adverse comments are received, this permit will likely be issued in April, with
an effective date of May 1, 2010.
cc:
Sincerely,
/I1 e /4147
Jim McKay
Eastern NPDES Program
Fayetteville Regional Office/Attn+s-Befiida Fiinsory
NPDES File
Technical Assistance & Certification Unit Attn: Mr. Steve Reid - via. email with fact sheet
Aquatic Toxicology Attn: Susan Meadows - via. email with fact sheet
Environmental Sciences Section, Attn: Jennie Atkins - via. email
EPA Region IV. • Attachment: Fact Sheet and application
Marziano & McGougan, P.A./ 147-A Dublin Square Road/ Asheboro, NC 27203/ Attn: Mr. Brian •
Sexton, P.E.
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: www.ncwaterquality.org
An Equal Opportunity \ Affirmative Action Employer
One
NorthCarolina
Naturally

Perrnit NC0088366
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,
Harnett County Public Utilities
is hereby authorized to discharge wastewater from a facility located at the
South Harnett Regional. WWTP
Shady Grove Rd. - SR 2050
Spring Lake
Harnett County
to receiving waters designated as the Little River 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 shall become effective .
This permit and authorization to discharge shall expire at midnight on May 31, 2011.
Signed this day .
DRAFT
Coleen H. Sullins, Director
Division of Water Quality
By Authorityof the Environmental Management Commission

Permit NC00S8366 •
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this 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.
Harnett County Public Utilities is hereby authorized to:
1. Continue to operate a 5.0 MGD wastewater treatment facility consisting of the following
components:
• Headworks including an automatic fine screen with manual bypass, vortex grit chamber,
influent composite sampler, and flow splitter box,
• Intermittent continuous extended aeration system including dual 126-ft by 174-ft basins
providing a total volume of 4,728,000 gallons, three 2,300 scfm blowers, fine bubble
diffusers, and five 25 hp submersible mixers
• Surge tank
• Three 12.5 -ft by 52-ft traveling bridge filters
• Dual channel UV disinfection system
• Cascade aerator with Parshall flume and effluent composite sampler
• A sludge management system consisting of three 300 gpm sludge return pumps, an
aerated sludge holding basin with a capacity of 802,000 gallons, including a 2,692 scfm
membrane disc aeration system •
• A lime addition system including two 7.5 hp submersible mixers
• A standby electrical generator •
2. After receiving an Authorization to Construct, to construct, and after submitting an Engineer's
Certification, to operate a 15.0 MGD wastewater treatment facility consisting of the following
components:
• The above listed 5.0 MGD wastewater treatment facility, plus:
• Dual intermittent continuous extended aeration systems with each system including dual
126-ft by 174-ft by 18-ft depth basins providing a total aeration volume of 5.90 MG, a 1.30
MG surge tank, fine -bubble diffusers, decanter, five 25 Hp submersible mixers, and four
2,300 scfm blowers
• Dual tertiary traveling bridge filters, with three 12.5-ft by 52-ft units each
• Dual channel UV disinfection system, with each channel capable of treating a peak flow of
12.5 MGD,
• A sludge management facility expansion including a 2-meter gravity belt thickener rated
at 900 dry pounds/ hour, a 2.2 meter sludge filter press rated at 2,041 dry pounds/ day
with sludge feed pump, screw conveyers, Class A residuals heated vessel rated at 2,000
pounds/ hour, lime storage silo and delivery system, and an odor control system
• A 1,000 KW emergency generator
Located on Shady Grove Rd, Spring Lake, in Harnett County.
3. Discharge from said treatment works at the location specified on the attached map into the
Little River, classified as C waters in the Cape Fear River Basin.

Permit NC0088366
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Harnett County Public Utilities = South Regional WWTP
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NPDES Permit No. NC0088366
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North
Harnett County

Przo6t NC008666 '
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
Duhngthapehod-beginningonthemfhectivedabeofthepennitand|astingunti|expiratioh'or
expansionabmve5K0G[),thePermitteeisauthohzedtodischargetreatadvvaatexvaterfrono(]utfa||
OOI. Such discharges shall be limited and monitored by the Pern1ittee as specified below:
ic
Disc
'v^'^rn o
^.-�`^=s^+���^z^n���/``,.�
Flow
5.0MGD
Continuous
Recording
Influent mEffluent
BOD.5-doy2U"C
'
�mh|1-Ou�bn 31\o
�Omg�
l5mo�
~
Daily
^
Composite
�8uen�dEffluent
BOQ5-doy28uC '
-
1-Momh31)x
1&Omo�
^
1�Omo�
~
Daily
'
—`'--
Influent ��E0uon
'
Total Suspended Solids
30.0mo/L
45.0mn/L
Daily
Influent and Effluent
NH3 auN
(April 1-October 31\
1.0mg/L
3.0mg/L
Oo^ �
Composite
Effluent
NH3 as
�Omo�
~
8�mo�
^
Daily
~
Como��
'
Effluent/Novnmbm1-�amh31\
Dissolved Oxygen »
Daily
Grab
Effluent
F000|Co|ifonn
/goomdfiomoon\
200/100m|
400/100m|
Daily
Grab
Effluent
'
Total Residual Chlorine *
28pg/L
Daily
Grab
Effluent
'Temperature
Daily
Grab
Effluent
pH
'
Daily
Grab
Effluent
Total Phosphorus
Monthly
Composite
Effluent
TKN
Monthly
Composite
Effluent
N[h+NOo
Monthly
Composite
Effluent
Total Nitrogen
Monthly
Calculated
Effluent
Chronic Toxicity o
Quarterly
Composite
Effluent
Temperature /
See Footnote 1
Grab
Upstream &
Downstream
Dissolved Oxygen
^~
See
Grab
UP»bnem&
Downstream
NOTES: See next page

Permit NC0088366
NOTES for A.(1)
1.
Upstream = at least 50 feet upstream of the discharge. Downstream = at least 500 feet'"
from the discharge. Stream "samples shall be collected three_ times per week during the
months of June,"July, August, and September and weekly during the remainder -of the
year.
7. The -monthly average effluent. BOD and Total Suspended Solids concentrations shall not
exceed 15% of th.e respective influent value.(85% removal). -- '
3. The daily average dissolved oxygen concentration as measured in the _effluent shall not
be less than 5.0 mg/1_,
4. TRC monitoring and limit requirements apply only if chlorine or chlorine derivative is used in
the treatment process. If chlorine or chlorine derivative is used, for disinfection, the
Fayetteville Regional "office must" be notified in advance.' The facility shall report all effluent.
TRC values reported by a NC certified laboratory, including field certified. However, ,effluent
values below 50 ug/ L will be treated as zero for compliance purposes. "
5. The pH shall .not be Tess than- 6:0 standard units nor greater than 9.0 standard units.
6. Chronic Toxicity (Ceriodaphnia) limit at 15% with testing in .January, April,- July, .and ,
October (see Special Condition A:.(3)). .
7. Instream sampling (Upstream and Downstream monitoring) is waived as long as the
Permittee retains membership in the Middle Cape Fear River Basin Association
(MCFRBA), which is conducting a coordinated instream monitoring effort. If the
Permittee'smembership in the MCFRBA is terminated; the Permittee must immediately
notify the Division in writing, and the instream, monitoring requirements specified in this
permit shall be reinstated immediately: �
8. See Special Condition A.(6)
There shall be no discharge of floating solids,or visible foam in other than trace amounts.

Permit NC0088366 '
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - DRAFT
During the period beginning on the submission of an Engineer's Certification and lasting -
until expiration, the Permittee is authorized to discharge treated 100% domestic
wastewater from Outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
-Effluent
Characteristics '-'-:.:,Monthly.
... ...
Diischar �'e' Limitations .' -
g • _
::11%I"omtorin Re uirements :'• -..-
g: q
' Average_.
:".Weekl.;.
:.Average'.;
"., ; ; Daily , •:
°tMaximnmf.
; Measurement
.' Fregiiericy.:': ;
_ '. Sample` •
• -:Type;,,'
Sample Location 1-
.• : �,' - -,
Flow
15.0 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day, 200C
- (April-1— October 31) 2
5.0 mg/L
7.5 mg/L
Daily
Composite
Influent and Effluent
BOD, 5-day, 200C
(November 1— March 31) 2
10.0 mg/L
15.0 mg/L
•
Daily
Composite
Influent and Effluent
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent and Effluent
NH3 as N
(April 1— October 31)
1.0 mg/L
3.0 mg/L
Daily
Composite
Effluent
NH3asN
(November 1— March 31)
2.0 mg/L
6.0 mg/L
Daily
Composite
Effluent
Dissolved Oxygen 3
Daily
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100m1
400/100m1
Daily
Grab
Effluent
Total Residual Chlorine 4
28 pg/L
Daily
Grab
Effluent
Temperature
Daily
Grab
Effluent .
pH 5
•
Daily
Grab
Effluent
Total Phosphorus mg/ L
Monthly
Composite
Effluent
Total Phosphorus 6
Seasonal Mass load of 53,543 Ib
April - October
Calculated
Effluent
TKN
Monthly
Composite
Effluent
NO2 + NO3
Monthly
Composite
Effluent
Total Nitrogen mg/ L
Monthly
Calculated
Effluent
Total Nitrogen 6.7
Seasonal Mass load of 160,628 Ib
April - October
Calculated
Effluent
Chronic Toxicity 8
Quarterly
Composite
Effluent
Temperature 9
See Footnote 1
Grab
Upstream &
Downstream
Dissolved Oxygen 9
See Footnote 1.
Grab
Upstream &
Downstream
Effluent Pollutant Scan 10
Annually
Composite
Effluent
NOTES: See next page

Permit NC0088366
NOTES for A.(2)
1. Upstream = at least 50 feet upstream of the discharge. Downstream = at least 500 feet
from the discharge. Stream samples shall be collected three times per week during the
months of June, July, August, and September and weekly during the remainder of the year.
2. The monthly average effluent BOD and Total Suspended Solids concentrations shall not
exceed 15% of the respective influent value (85% removal).
3. The daily average dissolved oxygen concentration as measured in the effluent shall not be
less than 5.0 mg/L.
4. TRC monitoring and limit requirements apply only if chlorine or chlorine derivative is used in the
treatment process. If chlorine or chlorine derivative is used for disinfection, the Fayetteville
Regional office must be notified in advance. The facility shall report all effluent TRC values
reported by a NC certified laboratory, including field certified. However, effluent values below 50
ug/ L will be treated as zero for compliance purposes.
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
6. Seasonal Mass limits for Total Phosphorus and Total Nitrogen represent the total pounds
discharged during the time period beginning on April 1 through October 31 of each calendar year.
7. TN = TKN + No3-N + NO2-N where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and No3-N
+ NO2-N are Nitrate an'd Nitrite Nitrogen, respectively.
8. Chronic Toxicity (Ceriodaphnia) limit at 34% with testing in January, April, July, and October
(see Special Condition A. (4)).
9. Instream sampling (Upstream and Downstream monitoring) is waived as long as the
Permittee retains membership in the .Middle Cape Fear River Basin Association (MCFRBA),
which is conducting a coordinated instream monitoring effort. If the Permittee's
membership in the MCFRBA is terminated, the Permittee must immediately notify the
Division in writing, and the instream monitoring requirements specified in this permit shall
be reinstated immediately.
10. See Special Condition A.(6)
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NC0088366
A. (3) 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 15%.
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 geometricmeanof
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.
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.
If the Permittee monitors any pollutant more frequently then 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.

Permit'NC0088366
NOTE: Failureto achieve test "conditions as specified in, the cited document, such,.as minimum
control orga.nisrn survival, mininium control organism reproduction, and appropriate environmental,.
controls, shall constitute an invalid•test and will require immediate follow-up testing to becompleted
no later than the last day of the month following the month of the initial monitoring. _
A. (4).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.34%.
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 permitJimit, 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 arespecified 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. _
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 maybe re-
opened and modified to include alternate monitoring requirements or limits.

Permit NC0068366
If the Permittee monitors any pollutant more frequently then 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. -
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. (5) PERMIT RE -OPENER: SUPPLEMENTARY NUTRIENT MONITORING
Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in Title 15A of
the North Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 02H.0112(b)(1) and
02H.0114(a), and Part II, Sections B.12. and B.13. of this Permit, the Director of DWQ may reopen this
permit to require supplemental nutrient monitoring of the discharge. 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.

Permit NC0088366
A. (6) 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 effluentpollutant 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
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1,2-dichloropropane -
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene.
Vinyl chloride
Add -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophepol
4-nitrophenol _
Pentachlorophenol
Phenol -
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene •
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
' 3,3-dichlorobenzidine • -
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene.
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)py rene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
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, 1617 Mail Service Center, Raleigh, North Carolina 27699-
1617. _
Priority Pollutant Analysis results shall be submitted with NPDES permit renewal applications.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
__..__.. NPDES No. NC00888366
Facility Informal -On .;-.
Applicant/Facility
Name; _
South Harnett County Regional Waste Water
Treatment Plant
:,Applicant Address'::': ,; :
P.O. Box 1119, Lillington, North Carolina 27546
Facility'Address: ;;:°;
3324 Shady Grove Road, Spring Lake, North Carolina
.28390
Permitted„ Flow. ';`; _`,
5.0 MGD/ expanding to 15.0 MGD
Type;.,:of.:Waste:: .;:; .
100 % Domestic
facility/P:errnitJ.Status
Grade IV /Major Modification
County '' '- . _.- „ : .
Harnett County
:71'.•. -
:. •, . Miscellaneous,:�::� _
= Receiving Stream:
Lower Little
River
;Regional, Office:: ;;; :`._,
- s:.,,;
Fayetteville
Stream: Cla'ssifi'cation: '
T
C
State_Grid'%,:US GS ..'
uad :: �:u,'.,,
G23NW/
3'0;3(d);Listed.?;;.:`' .`,: :'=.:.
Yes, low pH
;:Permit Writer *: °'';
Jim McKay
:Subbasin , -, -
03-06-14
Date:: ..,, .;'"- :{`
February 3, 2010
'`Drainage,Area(mi2) - `
398
M.;.,
��
`>:•
t,
} �`
{ ,
Long. 78° 53' 00" W
S7Q10;(cfs) .
44.4
°W7Q10 .(cfs)"
91.8',
,'30Q2; (,cfs) i
: Average=;Flow (cfs)°: '. •
495.5
Lat. 35° 13' 49" N
-_IWC. (%);;;.{ ,.. : : . ::: .:
34%
'Strea:m:;Index ''.-.._
18-23-(24)
Background
The U.S. military, through a process called "Base Realignment and Closure"
or BRAC is in the process of transforming the Fort Bragg and Pope AFB areas
by moving thousands of military personnel, dependents, and contractors to
the area. Many of these will be relocated into the South Harnett County
Regional Wastewater Treatment Plant service area, allowing other military
bases to be closed. In order to efficiently provide infrastructure to keep up
with the growth, the U.S. military, NC Department of Environment and
Natural Resources (DENR), the Division of Water Quality (DWQ), and Harnett
County government have worked together to develop plans for providing
wastewater treatment facilities. Harnett County currently operates a 5.0
MGD regional WWTP near Fort Bragg and Spring Lake. The facility appears
to have started up in June, 2009, and is discharging less than 1 MGD so far.
Fort Bragg operates an 8.0 MGD WWTP that is old and has operational
problems due to the facility age. The town of Spring Lake operates a 1.5
MGD WWTP that is also old and having operational problems. Harnett
County proposes to expand the South Harnett Regional WWTP to 15.0 MGD
with a tertiary treatment facility, taking flow from Fort Bragg and Spring
Lake, and retiring the two older facilities.
Fact Sheet
NPDES NC0088366 Draft
Page 1

Harnett County has produced an Engineering Assessment (EA) for this
expansion, which has undergone a North Carolina Environmental Policy Act
review, _leading to the issuance of a Finding of No :Significant Impact (FONSI)
on -October 27, 2009-allowing-the project -to proceed.
Receiving Water Review
This facility .discharges to Lower Little River near the town of_ Spring Lake.
Lower Little River is classified as C waters in the Cape Fear River Basin, and.
is listed as Impaired for pH on the 2006 EPA approved 303(d) list. DWQ.is
continuing to monitor water quality in Lower Little River to try and determine
the source of impairment. It may be local drought related. Little River drains
into the Middle Cape Fear River between Buckhorn dam and Lock and Dam
Number Three, which is impaired for chlorophyll A in the four miles upstream
of the lock and dam.
SEPA Review
Pursuant to the requirements of the North Carolina Environmental Policy Act
(N.C.G.S. § 113A-1, etseq.), an environmental assessment (EA) was prepared
by Harnett County for the wastewater treatment facilities proposed
expansion.
Five alternatives were considered for the wastewater treatment facility for
Harnett County: Connect to an existing. WWTP, Land Application of 10 MGD,
Reclaimed Water Application of 10 MGD, a point source discharge
alternative, and a combination of alternatives.. •
Alternate 1.1 would keep the Fort Bragg and Spring Lake WWTPs in
operation. In order to protect instream dissolved oxygen (DO), both plants
would have to be extensively upgraded to tertiary treatment standards with
5/1 mg/L limits for BOD and Ammonia -Nitrogen. This is because in 2002 an
engineer running a Level B model determined that the Lower Little River had
been overallocated for oxygen consuming wastes. The Department of
Defense has determined that it is not economically feasible to upgrade the
Fort Bragg WWTP, and has entered into a long term agreement with Harnett
County to treat Fort Bragg's wastewater. This option was considered "not
technologically feasible."
Alternate 1.2 considered shutting down the Fort Bragg and Spring Lake
WWTPs and pumping the wastewater to Fayetteville's Cross Creek WWTP.
This scenario is not feasible as Cross Creek does . not have sufficient
unallocated capacity to treat the new flow. This option was also considered
"not technologically feasible."
Alternate 2 considers land application of 10 MGD from Fort Bragg and Spring
Lake, while discharging 5 MGD from Harnett County's facility. The soils
present in Southern Harnett and Northern Cumberland County are not
amenable to spray irrigation. Approximately 7,000 acres would be required;
there is no such tract available. This alternative is considered "cost
prohibitive."
Fact Sheet
NPDES NC0088366 Draft
.Page 2

Alternative 3 considers reclaimed water application. It considers pumping. 1.0
MGD reclaimed- water treated to tertiary -levels to facilities such :as golf
-courses or turf farms. There are no industries or=potential customers.for this
amount •of recycled.-. water. This option was also considered "not
technologically feasible."
Alternative 4 considers expanding the existing 5.0. MGD South Harnett
County Regional WWTP to 15.0 MGD capacity, taking the flow from .,Fort
Bragg and Spring Lake, treating all the wastewater to tertiary standards and
discharging to the Lower Little River and decommissioning the two older
r
plants. This optionisthe preferred course.
._Alternative- 5 considers _a combination of alternatives '1 through 4.
Alternatives 1. through 3 were all dismissed as either "not technologically
feasible" or "cost prohibitive." No combination of there alternates could be
determined to be better than the expansion and direct discharge alternative.
Based on the findings of the EA, the impact avoidance/mitigation measures
contained therein, and reviewed by governmental agencies, the Division of
Water Quality has, concluded that the proposed project will not result in
significant impacts to the environment. The EA and Finding of No Significant
Impact (FONSI) are prerequisites for the issuance of Division of Water Quality
permits necessary for the project's construction. .
Permitting Strategy .
The wastewater treatment system is to be an advanced tertiary facility with
three 5.0 MGD modules. Disinfection will be by ultraviolet light (UV) instead
of chlorine. The treatment system will be designed to comply with very
stringent" limits of 1.0 mg/ L of ammonianitrogenand 5.0 mg/ L of BOD5 in
keeping with the Basinwide Quality Plan for new and expanding POTWs.
Nutrients
In keeping with the Basinwide Quality Plan, seasonal mass based limits are
placed equivalent to 6.0 mg/ L TN and 2.0 mg/ L TP for the time period of
April through October at the permitted flow of 15.0 MGD.
Reasonable Potential Analysis (RPA)
The facility has only been in operation for Tess than 6 months, operating at
very low` flowrates. . No DMRs were reviewed for this permit modification, so
no RPA was conducted.
Proposed Schedule For Permit Issuance
Draft Permit to Public Notice: February 17, 2010.
Permit Scheduled to Issue: April, 2010.
Permit effective date:.. May 1, 20.10 -
Expiration Date: May 31, 2011
Note: The expirationdate has been changed to May 31, 2011, in order to
comply with the basinwide schedule. -
Pact Sheet
NPDES NC0088366 Draft
Page 3

NPDES Division Contacts
---If you have questions- regarding any. -of the above information or on the
attached permit, please contactJim McKay at [phone], or by email at
[e-mail].
NAME:
Regional Office Comments
DATE: .2- 11- 2Pl®
NAME: DATE:
SUPERVISOR: DATE:
Fact Sheet
NPDES NC0088366 Draft
Page 4