NC0023876_Permit (Issuance)_20101105

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perchle Coleen H. Sullins Dee Freeman
Governor Director Secretary
November 5, 2010
` Mr. Robert Patterson, Jr.
Director of Utilities
P.O. Box 1358
Burlington, NC 27216-1358
Subject: Issuance of NPDES Permit Modifications
Permits NC0023868 and NC0023876
East and South Burlington WWTPs
Alamance County
Dear Mr. Patterson:
Consistent with the Director's October 1, 2009, letter of intent to modify NPDES permits affected by the
Jordan Reservoir Nutrient Management Strategy rules and Burlington's subsequent request for further
permit modification, and in consideration of public comments on the draft permits, the Division is
forwarding herewith the revised NPDES permit for the East and South Burlington WWTPs. 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.
The Division received no comments during the public review period. The enclosed permits include the
following changes as proposed:
• Total Phosphorus (TP) Limits. Phosphorus limits have been removed from Condition A.(1.) of each
permit. A new Condition A.(2.) describes the combined TP limit for the two facilities and how it
will be administered. Other nutrient -related conditions of the permit have been modified as
necessary. Each facility will continue to monitor and report its nutrient discharges individually, and
we propose that the City report the combined load once each year, with the December Monitoring
report for one plant. Phosphorus limits in the Jordan Lake watershed became effective January 1,
2010, according to the wastewater rule.
• Standard Permit Conditions. Most of the comments received from the Jordan Lake dischargers
during the public review pertained to changes in the standard conditions, Parts II, III, and IV of the
permits. The permittees noted a small number of minor errors, but most comments had to do with
changes in Part IV, where language was revised in anticipation of changes in the state pretreatment
rules. The Division has corrected the minor errors and reversed all changes from Part IV that are
not supported by existing state or federal rules.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
• Phone: [phone] S FAX: [phone] Customer Service: 1.877-623-6748
Internet: www.ncwaterquality.org .
An Equal Opportunity \ Affirmative Action Employer
. None
rthCarohna
Naturally

Mr. Robert Patterson,Jr.
Issuance of NPDES Permit Modifications
November 5, 2010
• Treatment Process Description. The reference to Powdered Activated Carbon Treatment on the
Supplement to Cover Page for the East Plant (NC0023868) has been modified to note that the
process is no longer in use. So long as the equipment remains in place and operative, it is not
appropriate to remove it from the process description altogether.
• pH Monitoring. Condition A.(1.) of the East Plant has been corrected to specify daily (rather than
weekly) pH monitoring to satisfy the wastewater monitoring rule, T15A NCAC 02B .0508.
• Nitrogen Optimization. The previous draft permit included a new condition pertaining to nitrogen
optimization requirements from the wastewater rule. That compliance -date has passed, and the
proposed condition has been deleted from the permit.
• Nutrient Re -opener. The nutrient monitoring re -opener from the previous permit pertained to
monitoring in preparation for the Jordan Lake study. It is no longer necessary and has been deleted
from the permit.
• Total Residual Chlorine Footnote. A footnote has been added to Condition A.(1.) indicating that
the Division considers the compliance level for TRC to be 50 ug/L. All lab values must still be
reported but, for compliance purposes, values below 50 ug/L meet the facility's TRC limit.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the office of
Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless Such a
demand is made, this permit shall be final and binding.
This permit is not transferable except after notice to the Division of Water Quality. 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 Quality, the
Division of Land Resources, the Coastal Area Management Act, or any other federal or local
governmental permit.
If you have any questions concerning this permit, please contact Mike Templeton at [phone] or at
mike. [e-mail].
Sincerely,
Coleen H. Sullins
Enclosure: Final permit modifications, NC0024325 and NC0047384
Copies: Chief, NPDES and Biosolids Permits Section, Region IV, EPA
Winston-Salem Regional Office, Surface Water Protection
Aquatic Toxicity Unit
NPDES Files
Central Files

Permit No. NC0023876
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, the
City of Burlington
is hereby authorized to discharge wastewater from a facility located at the
South Burlington WWTP
2471 Boy Wood Road
Graham
Alamance County
to receiving waters designated as Big Alamance 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.
The permit shall become effective December 1, 2010.
This permit and authorization to discharge shall expire at midnight on May 31, 2011.
Signed this day November 5, 2010.
v
oleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0023876 ' ,
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The City of Burlington
is hereby authorized to:
1. Continue to operate an existing 12.0 MGD wastewater treatment facility consisting of the following
components:
• Bar screen
• Grit chamber
• Equalization basin
• Primary clarifiers
• Anaerobic tanks
• Anoxic tanks
• Aeration tanks
• Secondary clarifiers
• Final effluent filters
• Chlorination (including non -potable water re -use)
• Dechlorination
• Primary and secondary sludge handling
The facility is located at South Burlington Wastewater Treatment Plant on Boy Wood Road in
Graham, Alamance County, and
2. Discharge from said treatment works at the location specified on the attached map into Big
Alamance Creek, which is classified C-NSW waters in the Cape Fear River Basin.
r
11

0
siej
USGS Quad #: C21SE, Mebane, NC
Lat. 36° 01' 05" Long. -79° 22' 27"
N
City of Burlington — South Burlington WWTP
NC0023876
County: Alamance
Receiving Stream: Big Alamance Creek
Stream Classification: C NSW
River Basin: Cape Fear
Sub -Basin #: 03-06-02

Permit No. NC0023876
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001
During the period beginning upon the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
EFFLUENT
CHARACTERISTICS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location'
Flow
12.0 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor & Report
Monthly
Recorded or
Calculated
Influent or Effluent
BOD, 5-day, (20°C) 2
(April 1— October 31)
9.0 mg/L
13.5 mg/L
Daily
Composite
Influent & Effluent
BOD, 5-day, (20°C) 2
(November 1— March 31)
18.0 mg/L
27.0 mg/L
Daily
Composite
Influent & Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent & Effluent
NH3 as N
(April 1-October 31)
3.0 mg/L
9.0 mg/L
Daily
Composite
Effluent
NH3 as N
(November 1-March 31)
6.0 mg/L
18.0 mg/L
Daily
Composite
Effluent
Dissolved Oxygen 3
Daily
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100mL
400/100mL
Daily
Grab
Effluent
Total Residual Chlorine 4
19 pg/L
Daily
Grab
Effluent
Temperature (°C)
Daily
Grab
Effluent
Conductivity
Daily
Grab
Effluent
pH 5
Daily i
Grab
Effluent
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + Noe-N
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen, TN 6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load 2'8
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TP Load 2'8
Monitor & Report (Ib/mo)
Monitor & Report (lb/yr)
Monthly
Annually
Calculated
Effluent
Cyanide 9
Monthly
Grab
Effluent
Total Mercury 10
14.0 ng/L
Monthly
Grab
Effluent
Total Copper
Monthly
Composite
Effluent
Total Zinc
Monthly
Composite
Effluent
Total Silver
Monthly
Composite
Effluent
Chronic Toxicity 11
Quarterly
Composite
Effluent
Pollutant Scan
See Condition A.(5.)
Annual
Grab/
Composite
Effluent
All footnotes are listed on the following page.
PART I, Page 1 of 9

Permit No. NC0023876
A.(8.) CALCULATION AND REPORTING OF NUTRIENT LOADS
The Permittee shall calculate and report monthly and annual nutrient loads for the East Burlington
(NC0023868) and South Burlington (NC0023876) WWTPs as follows:
(a.) Calculation of Discharge Loads: The Permittee shall calculate monthly and annual discharge
loads for each facility as follows:
(i.)
Monthly Discharge Load (lb/mo, TN or TP) = 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 Discharge Load (lb/yr, TN or TP) = Sum of the 12 Monthly TN (or TP) Loads for
the calendar year
(b.) Calculation of Delivered Loads:
(i.)
The Permittee shall calculate delivered loads as follows:
(A) Individual, Annual Delivered Load (lb/yr, TN or TP) =
Annual Discharge Load (1b/yr, TN or TP) x TF
where TF = Transport Factor, as follows:
PERMIT
FACILITY
TFTN
TFTP
NC0023868
East Burlington WWTP
96%
97%
NC0023876
South Burlington WWTP
80%
73%
(B) Combined Annual Delivered Load (1b/yr) = Sum of the facilities' Individual Annual
Delivered TN (or TP) Loads for the calendar year
(c.) Reporting of Nutrient Discharges: The Permittee shall report each facility's monthly TN and TP
discharge loads in that facility's discharge monitoring report.
(d.) Reporting of Combined Delivered Loads: The Permittee shall report each calendar year's
combined delivered loads with the South Burlington WWTP's December report for that year and
shall append the report with a summary of monthly loads and calculations.
PART I, Page 9 of 9

Permit No. NC0023876
A.(7.) ANNUAL LIMITS FOR TOTAL NITROGEN AND TOTAL PHOSPHORUS
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES
dischargers in the Jordan Lake watershed are annual loads and apply on a calendar year basis.
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP)
Discharge Load limit in this Permit if:
(i.) the Permittee's annual TN (or TP) Discharge Load is not greater than the effective limit, or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN (or TP) limit in this Permit may be modified as the result of allowable changes in the
Permittee's allocation.
(i.)
Allowable changes include those resulting from purchase of TN (or TP) allocation from an
authorized mitigation banker, the Ecosystem Enhancement Program, or other source
allowed under applicable regulations; purchase, sale, trade, or lease of allocation between
the Permittee and other dischargers; regionalization; and other transactions approved by
the Division.
(ii.) The Permittee may request a modification of the TN (or TP) limit in this Permit to reflect
allowable changes in its allocation(s).
(A) Upon receipt of timely and proper application, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Changes in TN (or TP) limits become effective on January 1 of the year following
permit modification. The Division must receive application no later than August 31
for changes proposed for the following calendar year.
(iii.) Any requests for modification should be sent to:
NCDENR/ DWQ/ NPDES Programs
Attn: Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(d.) If the Permittee is a member and co-permittee of an approved compliance association on January
1 of a given year, its TN and TP discharges during that year are governed by that association's
group NPDES permit and the limits therein.
(i.)
The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN and TP allocations will be updated annually and in
accordance with state and federal program requirements.
If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
(e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect
throughout the term of the Permit and are not affected by the Permittee's membership in a
compliance association.
PART I, Page 8 of 9

Permit No. NC0023876
A.(6.) NUTRIENT ALLOCATIONS
(a.) The following table lists the Total Nitrogen (TN) and Total Phosphorus (TP) allocations assigned
to, acquired by, or transferred to the Permittee in accordance with the Jordan Lake nutrient
management rule (T15A NCAC 02B .0270) and the status of each as of permit issuance. For
compliance purposes, this table does not supersede any TN or TP limit established elsewhere in
this permit or in the NPDES permit of a compliance association of which the Permittee is a Co-
Permittee Member.
ALLOCATION
TYPE
Base
Total Nitrogen Allocation
SOURCE
DATE
ALLOCATION AMOUNT'
Delivered
(Ib/yr)
Assigned by Rule
(T15A NCAC 02B .0270)
8/11/09
154,463
Discharge
(lb/yr)
STATUS
1
193,078
Active
TOTAL
154,463
193,078
Active
Footnote:
1 Nitrogen Transport Factor = 80%
ALLOCATION
TYPE
Base
Total Phosphorus Allocation
SOURCE
DATE
ALLOCATION AMOUNT'
Delivered
(Ib/yr)
Assigned by Rule g/11/09
(T15A NCAC 02B .0270)
Footnote:
17,717
Discharge
(Ib/yr)
STATUS
24,270
Active
TOTAL
17,717
24,270
Active
1 Phosphorus Transport Factor = 73%
(b.) Any addition, deletion, or modification of the active allocation(s) listed above (other than to
correct typographical errors) or any change of allocation to 'active' status shall be considered a
major modification of this permit and shall be subject to the public review process afforded such
modifications under state and federal rules.
PART I, Page 7 of 9

Permit No. NC0023876
A.(5.) EFFLUENT POLLUTANT SCAN
The Permittee shall perform an annual Effluent Pollutant Scan for all parameters listed in the attached
table. The 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 shall represent seasonal variations. 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 compounds: Diethyl phthalate
Mercury* 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
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. The report shall be submitted to the following address:
NCDENR/ DWQ/ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
*Mercury samples shall be analyzed using EPA Method 1631E.
PART I, Page 6 of 9

Permit No. NC0023876
A.(4.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 86%.
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:
NCDENR/ 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.
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.
PART I, Page 5 of 9

Permit No. NC0023876
A.(3.) INSTREAM MONITORING REQUIREMENTS
NOTE: The following need only be sampled if the permittee should elect to withdraw membership in
the Upper Cape Fear River Basin Association.
PARAMETERS TO BE SAMPLED:
Parameter
Dissolved Oxygen
Fecal Coliform
Temperature
Conductivity
Total Phosphorus
Sample Type Frequency
Grab
Grab
Grab
Grab
Grab
3/week (June - September)
1/week (October - May)
3/week (June - September)
1/week (October - May)
3/week (June - September)
1/week (October - May)
3/week (June - September)
1/week (October - May)
3/week (June - September)
1/week (October - May)
SAMPLE LOCATIONS:
1. Upstream at Highway 87.
2. Downstream at a) Boy Wood Road (NCSR 2116)
b) Saxapahaw Lake - above dam (sampling at this point shall not be required
if the river flow is greater than 250 cfs at the USGS gauge 02096500)
c) NCSR 1005
Upstream and downstream samples shall be grab samples. Instream sampling should be
coordinated to reduce redundant sampling for the Burlington. - East, Burlington - South and
Graham wastewater treatment facilities under the guidance of the Winston-Salem Regional Office.
Each facility should conduct instream sampling the same day and in so far as possible at the same
time of day.
REPORTING REQUIREMENTS:
Data entered on a form approved by the Division of Water Quality and summarized in an annual
report due by January 1st of the year immediately following the summer period when sampling
occurred.
Yearly monitoring reports shall be sent to:
NCDENR/ DWQ/ Modeling/TMDL Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
PART I, Page 4 of 9

Permit No. NC0023876
A.(2.) COMBINED LIMITATIONS FOR NUTRIENTS - Outfall CO1
(a.) During the period beginning on the dates specified below and lasting until permit expiration, the
Permittee is further authorized to discharge Total Nitrogen and Total Phosphorus from the East
Burlington WWTP (NC0023868, Outfall 001) and the South Burlington WWTP (NC0023876,
Outfall 001) subject to the following combined, delivered load limitations:
Permit
Facility
Total Nitrogen,
Delivered (Ib/yr)1
Active
Allocations
Combined
Limit
NC0023868
NC0023876
Footnote:
East Burlington WWTP
South Burlington WWTP
148,670
154,463
Total Phosphorus,
Delivered (Ib/yr)1
Active
Allocations
Combined
Limit
303,133
(effective 1/1/2016)
16,746
17,717
34,463
(effective 1/1/2010)
s
1 Allocations and limits in this table are expressed as delivered loads. See Condition A.(8.) regarding
calculation of delivered loads from discharge loads.
(b.) Compliance with these limits shall be determined in accordance with Special Conditions A.(7.),
Annual Limits for Total Nitrogen and Total Phosphorus, and A.(8.), Calculation and Reporting of
Nutrient Loads.
(c.) Nutrient monitoring and reporting requirements are specified in Special Conditions A.(1.),
Effluent Limitations and Monitoring Requirements, and A.(8.), Calculation and Reporting of
Nutrient Loads.
(d.) Pursuant to N.C. General Statute Section 143-215.1 and the implementing rules found in Title 15A
of the North Carolina Administrative Code, specifically, 15A NCAC 02B.0270, and Part II,
Sections B-12 and B-13 of this permit, the Division of Water Quality (Division) may reopen the
permits listed above and establish more stringent nutrient limits upon finding that such limits are
necessary to prevent the discharges from causing localized water quality impacts in the receiving
streams.
(e.) The Permittee may request that its permits be modified to rescind these combined limits and
establish individual mass discharge limits for each facility. The Division may, after written
notification to the Permittee, rescind these combined limits and establish individual mass
discharge limits for each facility if it determines that the combined limits do not support the
objectives of the Jordan Lake Nutrient Management Strategy. The Division shall provide for
public review of the proposed permit modifications and include in the permit an appropriate
schedule of compliance for the proposed nutrient limits.
PART I, Page 3 of 9

Permit No. NC0023876
Footnotes:
1. Sample locations: For instream monitoring requirements and sample locations, see Special Condition A. (3.). Instream
monitoring requirements shall be waived as long as the facility continues to participate in the Upper Cape Fear River
Basin Association.
2. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent
value (85% removal).
3. The daily dissolved oxygen effluent concentration shall not be less than 6.0 mg/L.
4. The Division shall consider all effluent TRC values reported below 50 ug/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
(including field certified), even if these values fall below 50 ug/L.
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored daily at the
effluent by grab sample.
6. TN is Total Nitrogen = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen, NO3-N and NO2-N are Nitrate
and Nitrite Nitrogen, respectively.
7. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period of time. See Special
Condition A.(8.), Calculation and Reporting of Nutrient Loads.
8. The facility is subject to nutrient limitations as specified in Special Condition A.(2.), Combined Limitations for Nutrients.
9. The quantitation limit for cyanide shall be 10 ug/L (10 ppb). Levels reported at less than 10 ug/L shall be considered
zero.
10. Low-level method 1631E must be used in sampling.
11. Chronic Toxicity (Ceriodaphnia) P/F at 86% in January, April, July and October. See Special Condition A.(3.).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
PART I, Page 2 of 9