NC0088366_NPDES Draft Permit_20120425

AAA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E. Dee Freeman
Governor - Director Secretary
April 25, 2012
Mr. Steve Ward
Harnett County Public Utilities
P.O. Box 1119
Lillington, North Carolina 27546
Subject: Draft Renewal of
Permit No. NC00,88366
South Harnett County Regional WWTP
Hamett County
Dear Mr. Ward:
Enclosed with this letter is a copy of the draft renewal permit for your facility. Please review the draft
carefully to understand the conditions, measurement units, and requirements.
This draft permit has the following changes from your current permit:
+ Monitoring and the limit and footnote for Total Residual Chlorine (TRC) have been removed from this
permit, as you use UV light for disinfection and do not have chlorine addition facilities.
Concurrent with this notification,' the Division is publishing a notice in the newspaper having circulation in
the general Harnett County area, soliciting public comments on this permit draft. Please provide any comments
you may have regarding this draft to DENR — DWQ, NPDES Program no later than 30 days after receiving this
draft permit. -
Following the 30-day public comment period, the Division will review all pertinent comments and take
appropriate action prior to issuing a final permit. If you have questions concerning the draft for your facility,
please call me at [phone] or by email at [e-mail].
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
North Carolina
Naturally

If no adverse comments are received from the public or from you, this permit will likely be issued in June
2012, with an effective date of August 1, 2012, expiring on April 30, 2016.
Attachments
CC:
Sincerely,
Jim McKay
Complex NPDES Permitting
Fayetteville Regional Office/ Attn: Belinda Hinson - via email
Central Files
NPDES File
Aquatic Toxicology Attn: Susan Meadows - via. email
Monitoring Coalition Program - Steve Kroeger & Carrie Ruhlman - via email
TACU ; Steve Reid - via. email
EPA Region IV with application and Fact Sheet
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 l Affirmative Action Employer
NorthCarolina
;Vaturallj

Permit NC0088366
STATE OF NORTH CAROLINA .
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
DRAFT 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 July 1, 2012.
This permit and authorization to discharge shall expire at midnight on May 31, 2016.
Signed this day June, 2012.
DRAFT
Charles- Wakild, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0088366
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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No. NC0088366
Streagnclass; C Sub -Basin 03-05-14
HPDES Permit
North
, Harnett County

Permit NC0088366
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
During the period beginning on the effective date of the permit and lasting until expiration, or expansion above 5 MGD, the
Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by
the Permittee as specified below:
Effluent -
Characteristics
Discharge Limitations
Monitoring Requirements
Monthly
Average
Weekly
Average.
Daily
Maximum •
Measurement
Frequency
Sample
Type
"Sample Locationl
Flow
5.0 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day, 20°C
2
(April 1— October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
Influent and Effluent
BOD, 5-day, 20°C
(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
NH3 as N
(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
Temperature
Daily
Grab
Effluent
pH 4
Daily
Grab
Effluent
Total Phosphorus
Monthly
Composite
Effluent
TKN
Monthly
Composite
Effluent
NO2 + NO3
Monthly
Composite
Effluent
Total Nitrogen
Monthly
Calculated
Effluent
Chronic Toxicity5
Quarterly
Composite
Effluent
Temperature 6
See Footnote
1
Grab
Upstream &
Downstream
Dissolved Oxygen 6
See Footnote
1
Grab
Upstream &
Downstream
Effluent Pollutant Scan 7
Annually
Composite
Effluent
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 ofJune, 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. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. Chronic Toxicity (Ceriodaphnia) limit at 15% with testing in January, April, July, and October (see Special
Condition A. (3)).
6. 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.
7. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see 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
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
Discharge Limitations
' Monitoring Requirements
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location 1
Flow
15.0 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day, 20°C
(April 1— October 31) 2
5.0 mg/L
7.5 mg/L
' Daily
Composite
Influent and Effluent
BOD, 5-day, 20°C
(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
NH3 as N
(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
Temperature
Daily
Grab
Effluent
pH 4
Daily
Grab
Effluent
Total Phosphorus mg/ L
Monthly
Composite
Effluent
Total Phosphorus 5
Seasonal Mass Load of 53,543 lb
April -
October
Calculated
Effluent
TKN
Monthly
Composite
Effluent
NO2 + NO3
Monthly
Composite
Effluent
Total Nitrogen mg/ L
Monthly
Calculated
Effluent
Total Nitrogen 5' 6
Seasonal Mass load of 160,6281b
April -
October
Calculated
Effluent
Chronic Toxicity 7
Quarterly
Composite
Effluent
Temperatures
See Footnote
1
Grab
Upstream &
Downstream
Dissolved Oxygen 8
See Footnote
1
Grab
Upstream &
Downstream
Effluent Pollutant Scan 9
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. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. 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.
6. TN = TKN + No3-N + NO2-N where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and No3-N + NO2-N are
Nitrate and Nitrite Nitrogen, respectively.
7. Chronic Toxicity (Ceriodaphnia) limit at 34% with testing in January, April, July, and October (see Special
Condition A. (4)).
8. 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.
9. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see 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 geometric mean of the highest concentration
having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable
impairment of reproduction or survival. The definition of "detectable impairment," collection methods, exposure regimes, and
further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form
(MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B
for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the following address:
Attention:NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30 days after the
end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response
data, and be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee
will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit
number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the •
form. The report shall be submitted to the Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required
during the following month.
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.
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..

f
Permit NC0088366
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 permit limit, then
multiple -concentration testing shall be performed at a minimum, in each of the two following months as described in "North
Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February.1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration
having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable
impairment of reproduction or survival. The definition of "detectable impairment," collection methods, exposure regimes, and
further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form
(MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B
for the Chronic Value. Additionally, DWQ Form AT-3 (original)°is to be sent to the following address:
Attention:NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30 days after the
end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response
data, and be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee
will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit
number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the
form. The report shall be submitted to the Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required
during the following month.
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.
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.

Permit NC0088366
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 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)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus'
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 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
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene •
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2, 3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Reporting. Test results shall be reported on DWQ Form -A MR-PPA1 (or in a form approved by the Director) by
December 31st 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.
Priority Pollutant Analysis results shall be submitted with NPDES permit renewal applications.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0088366
Facility Information
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/Permit Status:
Grade IV / Renewal
County: . "
"
Harnett County
Miscellaneous
•Receiving Stream:.
Lower Little
River
Regional Office:
Fayetteville
Stream Classification:
C
State Grid -/ USGS Quad:
G23NW/ Manchester
303(d) Listed?
Yes, low pH &
Hg on 2012 Draft
303(d) list
Permit Writer:
Jim McKay
Subbasin:.,.
.
03-06-14
Date:
April 9, 2012
Drainage Area mil:.
398
S7Q10 (cfs) .
44.4
rg
,
_i
78° 53' 00" W
W7Q10.(cfs)
91.8,
30Q2 (cfs)
'- •
Lat. 35° 13' 49" N Long.
Average Flow (cfs):
495.5
IWC (%):
34%
Stream 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. Hamett County currently operates a 5.0 MGD
regional WWTP near Fort Bragg and Spring Lake. The facility 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. 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 retiring the older facility. The expansion was approved by DWQ when the permit
modification regarding the 15.0 MGD rate was issued in April, 2010.
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 and Hg on
the 20012 Draft 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 Buckhom dam and Lock and Dam Number Three,
which is impaired for chlorophyll A in the four miles upstream of the lock and dam.
Fact Sheet
NPDES NC0088366 Draft
Page 1

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. Since disinfection is
by UV and not chlorine/ derivitives, the TRC monitoring, limit, and footnote will be removed
from the permit. The treatment system will be designed to comply with very stringent limits of
1.0 mg/ L of ammonia nitrogen and 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 been in operation for 2 1/2 years, operating at very low flowrates. DMRs were
reviewed for this permit modification, but there are no parameters monitored that an RPA could
be run for, so no RPA was conducted.
Operational Review:
The permit requires the monthly average effluent BOD and Total Suspended Solids
concentrations shall not exceed 15% of the respective influent value (85% removal). The
actual results are 99.2% BOD removal and 98.5% TSS removal.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: April, 2012.
Permit Scheduled to Issue: June, 2012.
Permit effective date: July 1, 2012
Expiration Date: May 31, 2016
NPDES Division -Contacts
If you have questions regarding any of the above information or on the attached permit, please
contact Jim McKay at [phone], or by email at [e-mail].
NAME: DATE:
Regional Office Comments
NAME: DATE:
SUPERVISOR: DATE:
Fact Sheet
NPDES NC0088366 Draft
Page 2