NC0047597_Permit Modification_20100709

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
July 9, 2010
Mr. Robert Dodson, Superintendent
Department of Water Management
City of Durham
101 City Hall Plaza
Durham, North Carolina 27701
Subject: NPDES Permit Modification
Permit NC0047597
South Durham Water Reclamation Facility
Durham County
Dear Mr. Dodson:
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 in consideration of public comments on the
subsequent draft permit modifications, the Division is forwarding herewith the revised NPDES permit
for the South Durham Water Reclamation Facility. 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 on the draft permit during the initial public comment period and is
issuing the permit with the proposed modifications. However, several permittees, including the City,
commented on the standard permit conditions (Parts II, III, and IV) in the draft permits. In response,
Jeff Poupart of the Point Source Branch has worked with other programs within the Division and with
EPA Region 4 staff to evaluate and address those comments. The final permit includes .the resulting
version of the standard conditions. We regret any inconvenience this delay may have caused.
Implementation of Total Phosphorus (TP) Limits. The Jordan Reservoir Wastewater Discharge
Requirements (T15A NCAC 02B .0270) established annual mass phosphorus limits for fourteen
treatment facilities, to become effective with calendar year 2010. Thus, even though the effective date of
this permit modification is August 1, 2010, the new limits became effective January 1, 2010, by rule and
apply to calendar year 2010 in its entirety.
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
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
NoIIe Carolina
�tura!ly

Mr. Robert Dodson, Superintendent
NPDES Permit Modification
July 9, 2010
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,
fiColeen H. Sullins
Enclosure: Final permit modification, NC0047597
Copies: Chief, NPDES and Biosolids Permits Section, Region N, EPA
Raleigh Regional Office, Surface Water Protection
PERCS Unit
NPDES Files
Central Files

Permit No. NC0047597
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 Durham
is hereby authorized to discharge wastewater from a facility located at the
South Durham Water Reclamation Facility
6605 Farrington Road
Durham
Durham County
to receiving waters designated as an unnamed tributary to New Hope Creek in the Cape Fear River
Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective August 1, 2010.
This permit and authorization to discharge shall expire at midnight on April 30, 2011.
Signed this day July 9, 2010.
oleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0047597
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 Durham
is hereby authorized to:
1. Continue to operate an existing 20.0 MGD wastewater treatment facility consisting of the
following:
• Mechanically cleaned bar screens
• Long channel grit chambers
• Primary clarifiers
• Aeration basins
• Final clarifiers
• Flocculation basins
• Traveling bridge effluent sand filters
• UV disinfection
• Anaerobic digesters
• Aerobic digesters
• Gravity belt thickener
• Clarifier
• Sand drying beds
• Belt filter press
Facility is located at the South Durham Water Reclamation Facility, 6605 Farrington Road, Chapel
Hill in Durham County, and
2. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to New Hope Creek, classified WS-IV NSW waters in the Cape Fear River
Basin.

South Durham WRF - NC0047597
USGS Quad Name: Southwest Durham
Receiving Stream: New Hope Creek
Stream Class: WS-IV NSW
Subbasin: Cape Fear - 030605
Lat.: 35°58'18"
Long.: 78°58'28"
SCALE 1:24,000

Permit No. NC0047597
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
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:
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Flow
20.0 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)
5.0 mg/L
7.5 mg/L
Daily
Composite
Influent & Effluent
BOD, 5-day, (20°C) 2
(November 1— March 31)
7.0 mg/L
10.5 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)
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 Oxygen3 . - -
•• Daily
Grab
Effluent
pH 4
, •
Daily
Grab
Effluent
Total Residual Chlorines
17.0 pg/L
Daily
Grab
Effluent
Temperature (°C)
Daily
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100 ml
400/100 ml
Daily
Grab
Effluent
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NOrN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen, TN 6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load'$
Monitor & Report (Ib/mo)
334,705 Ib/yr
Monthly
Annually
Calculated
Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TP Load'+8
Monitor & Report (Ib/mo)
14,053 Ib/yr (effective 1/1/2010)
Monthly
Annually
Calculated
Effluent
Total Zinc
2/Month
Composite
Effluent
Fluoride
Monthly
Composite
Effluent
Chronic Toxicity 9
Quarterly
Composite
Effluent
Annual Pollutant Scan10
Annually
Composite
Effluent
All footnotes are listed on the following page.

Permit No. NC0047597
Footnotes:
1. See Condition A.(2.) for instream monitoring requirements.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective
influent value (85% removal).
3. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. Monitoring requirement and limit applies only if chlorine is added for disinfection.
6. TN = TKN + NO3-N + NO2-N, where TN is total nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are
Nitrate and Nitrite Nitrogen, respectively.
7. TN or TP Load is the mass quantity of Total Nitrogen and Total Phosphorus discharged in a given period of time. See
Special Condition A.(8.) Calculations of Total Nitrogen or Total Phosphorus Loads. •
8. Compliance with mass limits shall be determined in accordance with Special Condition A.(7.), Annual Limits for Total
Nitrogen or Total Phosphorus.
9. Chronic Toxicity (Ceriodaphnia) P/F Q 90%; January, April, July, and October (See A.(4.) Special Conditions of the
Supplement to Effluent Limitations).
10. See Special Condition A.(5.), Effluent Pollutant Scan.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A.(2.) INSTREAM MONITORING REQUIREMENTS
Monitoring Locations: Upstream - New Hope Creek at I-40
Downstream - At NCSR 1107
Parameter
Frequency
Sample Type
Dissolved Oxygen
3lweek, June 1— September 30; 1/week, October 1— May 31
Grab
Fecal Coliform
3lweek, June 1— September 30; 1/week, October 1— May 31
Grab
Temperature
3/week, June 1— September 30; 1/week, October 1— May 31
Grab
Conductivity
3lweek, June 1— September 30; 1/week, October 1— May 31
Grab
pH
3lweek, June 1— September 30; 1/week, October 1— May 31
Grab
Total Phosphorus
1/week, June 1— September 30
Grab
NO3-N + NO2-N
1/week, June 1— September 30
Grab
TKN
1/week, June 1— September 30
Grab
PO4
1/week, June 1— September 30
Grab
A.(3.) PROVISIONAL WAIVER OF INSTREAM MONITORING REQUIREMENTS
Instream monitoring requirements in this NPDES permit shall be provisionally waived so long as the
Permittee remains a member of the Upper Cape Fear River Basin Association and the Association
continues to function as approved by the Division and Environmental Management Commission. If
the Permittee does not participate in the Association or if the Association ceases to function, the
instream monitoring requirements in this permit become effective immediately; and the Division may
reopen this permit by administrative letter to establish additional instream monitoring requirements it
deems necessary to adequately characterize the effects of the discharges on water quality in the
receiving stream.

Permit No. NC0047597
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 90%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised 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.

Permit No. NC0047597
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-chloroisopropyI) 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 TetrachloroethyIene 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 1A-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 1631.

Permit No. NC0047597
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.
Total Nitrogen Allocation
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT (1)
STATUS
Delivered (Ib/yr)
Discharge (Ib/yr)
Base
Assigned by Rule
(T15A NCAC 02B .0270)
8/11109
139,009
185,345
Active
TOTAL
139,009
185,345
Active
Footnote:
(1) Nitrogen Transport Factor = 75%
Total Phosphorus Allocation
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT (1)
STATUS
Delivered (Ib/yr)
Discharge (lb/yr)
Base
Assigned by Rule
(T15A NCAC 02B .0270)
8/11/09
9,415
14,053
Active
TOTAL
9,415
14,053
Active
Footnote:
(1) Phosphorus Transport Factor = 67%
(b.) Any addition, deletion, or modification of the listed allocation(s) (other than to correct
typographical errors) or any change in status of any of the Isted allocations 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.

Permit No. NC0047597 •
A.(7.) ANNUAL LIMITS FOR TOTAL NITROGEN OR TOTAL PHOSPHORUS
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits for NPDES
dischargers in the Jordan Lake watershed are annual limits 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)
Load limit in this Permit if:
(i.) the Permittee's annual TN (or TP) Load is less than or equal to the effective limit, or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN (or TP) Load limit in this Permit may be modified as the result of allowable changes in
the Permittee's allocations.
(i•)
(u.)
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.
The Permittee may request a modification of the TN (or TP) Load 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.
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.
(iii.) 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.
A.(8.) CALCULATION OF TOTAL NITROGEN OR TOTAL PHOSPHORUS LOADS
(a.) The Permittee shall calculate monthly and annual TN Loads as follows:

Permit No. NC0047597
(b.)
Monthly TN (or TP) Load (lb/ mo) = 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
Annual TN (or TP) Load (lb/yr) = Sum of the 12 Monthly TN (or TP) Loads for the calendar
year
The Permittee shall report monthly Total Nitrogen and Total Phosphorus results (mg/L and
Ib/mo) in the appropriate discharge monitoring report for each month and shall report each
calendar year's results (lb/yr) with the December report for that year.
A.(9.) NITROGEN OPTIMIZATION
(a.) Not later than February 11, 2010, the Permittee shall:
(i.) evaluate its treatment facilities and operations,
(ii.) identify further opportunities to improve and optimize nitrogen reduction in the existing
facilities beyond those previously implemented pursuant to G.S. 143-215.1B(d), and
(iii.) submit a report to the Division documenting its findings, proposing optimization measures,
and describing expected results.
No later than six months following the Division's written acceptance of the report, or as provided
in the acceptance, the Permittee shall implement the proposed measures.
(c.) Beginning one year following the Division's acceptance of the report and continuing through
2016, the Permittee shall submit a progress report to the Division documenting the status of the
proposed measures and the nitrogen reductions achieved at the facility during the previous
calendar year.
(d.) Reports shall be submitted to:
NCDENR/ DWQ/ NPDES Programs
Attn: Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(b.)
A.(10.) NUTRIENT MONITORING REOPENER
Pursuant to N.C. General Statute Section 143-215.1 and the implementing rules found in Title 15A of
the North Carolina Administrative Code, Subchapter 2H, specifically, 15A NCAC 2H.0112(b) (1) and
2H.0114(a), and Part II, Sections B-12 and B-13 of this permit, the Director of 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.

1869
CITY OF MEDICINE
Administration
919-560-4381
:ustomer Billing Services
919-560-4412
Laboratory Services
919-560-4386
Plant Maintenance
919-560-4388
Regulatory Compliance
919-560-4381
Wastewater Treatment
North - 919- 560-4384
South - 919-560-4336
'ater Supply & Treatment
Niliiams - 919-560-4349
Brown - 919-560-4362
Water & Sewer
Maintenance
919-560-4344
CITY OF DU RHAM
DEPARTMENT OF WATER MANAGEMENT
101 CITY HALL PLAZA • DURHAM, NC 27701
919-560-4381 • FAX [phone]
www.durhamnc.gov
January 11, 2010
Mr. Mike Templeton
NCDENR — DWQ
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Dear Mr. Templeton:
Listed below are comments from the City of Durham on the proposed changes to
NPDES permit conditions, Parts II through V as requested in your letter dated
December 31, 2009:
• Part II, Section D. Monitoring and Records, Item 4 Test Procedures The
second paragraph of this section states that, "personnel conducting testing
of the field -certified parameters must hold the appropriate field parameter
certification". Mr. Jeff Adams, DWQ — Laboratory Section, confirmed
that individuals are not certified for any laboratory analyses or sample
collection, only laboratories. NCAC Title 15 Chapter 2 Subchapter 2H
Section .0800 adds field parameter certification to the definitions of
Commercial, Industrial and Municipal Laboratories. Therefore it would
appear that the first paragraph in Item 4 Test Procedures, "Laboratories
used for sample analysis must be certified by the Division" would cover
all field parameter certifications in all situations. If it is desirable to
mention field parameters, the paragraph could be modified to state,
"Laboratories used for sample analyses, including field parameters, be
certified by the Division.
• Part IV, Section C. Municipal Control of Pollutants from Industrial Users,
Item c
This section requires the Permittee to report slug loads or unusual
discharges into the WWTP which have the potential to adversely impact
the permittee's Pretreatment Program and/or the operation of the WWTP.
This would require any permittee to report any abnormal change to the
influent characteristic, even though it may not impact the discharge of the
facility. This could include additional flow due to Inflow/Infiltration,
cleaning of a sewer line that causes a temporary increase in dissolved
oxygen demand in the facility, etc..
Good Things Are Happening In Durham

Page 2
Mr. Mike Templeton
January 11, 2010
If this section is adopted as proposed, permittees will be placed in the
difficult position of determining when to report a change in influent
characteristics that has the potential to adversely impact the WWTP. A
suggested modification is to use the language in Part II Section E,
Reporting Requirements, which requires notification if there is a
noncompliance, not a possible noncompliance. Another minor change
would be to remove the term "slug load" since it would be considered an
unusual discharge.
Thank you for the opportunity to comment on the changes. We would appreciate your
consideration of the comments. If you have any questions, please call me at 919-560-
4386.
Sincerely,
Robert Dodson
Superintendent
cc: Water Management File
Vicki Westbrook, Deputy Director
Reggie Hicks, Superintendent, Regulatory Compliance
Good Things Are Happening In Durham

ATA,
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
MEMORANDUM
To:
November 4, 2009
Michael L. Douglas, P.E.
NC DENR / DEH / Public Water Supply Section Regional Engineer
Raleigh Regional Office
From: Mike Templeton
Point Source Branch/ NPDES
Subject: Review of Draft Permit NC0047597
Durham - South Water Reclamation Facility
Durham County
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
December 4, 2009. If you have any questions on the draft permit, please contact me at 919-807-6402 or
[e-mail].
RESPONSE: (Check one)
*******%************** ** **** **************************
Concurs with the issuance of this permit provided the facility is operated and maintained properly,
the stated effluent limits are met prior to discharge, and the discharge does not contravene the
designated water quality standards.
Concurs with issuance of the above permit, provided the following conditions are met:
Opposes the issuance of the above permit, based on reasons stated below or attached:
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
No thCarolina
77aturaiij

AFFIDAVIT OF PUBLICATION
State of North Carolina
County of Durham
Jennifer Snead, being duly sworn, says that she is the
Principal Clerk of PMG, LLC, doing business as The Herald -
Sun, a newspaper published in and of general circulation in
said County, and that a notice of which the annexed is a True
Copy, was published in said newspaper one time on the 17th
day of November, 2009.
Princi al Clerk
Sworn to and subscribed before me this 17th day of
November, 2009.
otary Public
My Commission Expires: 8-15-14
Durham County, North Carolina
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Ft R r NOTIC>_
STATE CF NCRTH CAFCUNA
(TMRCIf IvB'TTAI-r
1617 MAIL SERVCE CENTER
RFLLEIGH, NC 27699-1617
NC7TFICATION OF INTENT TO MC701FY NPDES
WASTEWATER FER ITS IN
11-E JOIDAN LAB WATERS-®
On the bass d trough staff renew and .4+*4L i d
NC General Statute 143.21, Pubic Law 92-500, and
other lawful standards and regiatiors, the North Ca-
rona Envttrrnental Cornrrisson proposes to rmodfy
National. Pollutant Discharge Elimination System
(NPits to the per-
sons IsS) wastewater r discharge from the Pibisti
sans [sled below effective 45 days
date d the notice.
The purpose of these medications 'e to set Tota!
Phosphors dscharge Knits n accordance with the
Jordan Lake Nutrient Management Strategy
Waste-
water Discharge Requirements, T15A NCAC
0270. The fourteen (14) affected fealties discharge
treated wastewater n the Jordan Lake watershed cf
the Cane Fear River Bat
NPDES Permit No. NC0047597,�C New
Scutt Dui a i r VvRF, cfschargh9
1, Dahan Cooly,
NPDES Permit No. NC0025241, Orange Water &
Sewer Authority - Mason Fam WWTP, disdayg to
Mogen peek n Oa ye County,
a e WV1P tlam to Nat Creek n Otr-
ham Carty;
NPDES Paint No. N00056413, CttJtratt WFF - Ca-
roms Meadows VVVVTP, dsdiargig to Morgan peek
n Ctreltrrm Carty.
NPDES Pemmit No. NC0043559, Fearrington times,
hc. - FeerrngtonUntie, WvVTP, dtdharg<ag to UT to
Btdh Creek n Ct on en Couty, d Greensboro NPDES Permit No. NO0047384, City
TZ. Osborne WVVTP, discharging to South Buffalo
Creek h &lord Carty
NPDES Permit No. NO0024325, Cady d G
Ntorth BrJfab peek VWVTP, dschagr9 to North Bi-
fat, peek n GuTad Cotrty,
NPDES Permit No. NC0023868, HaCity w Fb err Bon ha' -
9t
East<ide WWTP, dsd''an,T19 to
NGulfcrd
PDES Pernik No. N03023876, City of Bufrgtm -
SoutFside WIMP, cisdhagig to Big Alarrance creek
In (..tud Carl);
NPOES Permit No. NC0024881. HCity of id Re -
Rr�eidsmuie WWTP, dsdlargng to
h d No. N . Cly cf - Gra-
ham WArfP, disc>a�ngto Haw Amar
FCEi Permit No. NC0021474. City of Mebane - Me-
bene WWTP, dsdhagg to MoadaTs peek it Ata-
mance Carty,
NFOES Pemit No. NC0020354, Town d F
nCarty; dsdhargrtg
to Robeson Creek in
Ctedha
NPDES Permit No. NC0086966. Ouarterstone Farm
Homeowners Assoc. - Duarterstone Farm WWTP,
dschaging to Buffett Creek h Gulfcrd Carty.
written gg theproposedpermt vet
be accepted trJi 30 days after the publish date of
this notice. Al comments received oriel' to that date
are considered in the fret determinations regardng
the prcpceed perrnts. The oiedor of the NC Waal
d Waer Orally rr3y deode to hod a pul±ic meet; y
for the prcposed permits shaJJ the DiVekn 'stave
hterest
Co the daftcf
ad other s.ppor6ng tier -
matron Pcn �mts t pay-
ment d the costs of reproduction: Man canoe -its
ardrer requests for t ton Tabu t to the NC DNieon d
Wade' Clarity a the aloe address or ' cal Ms Cie
Sprinkle at [phone]. Please Include the
NPDES permit ruhhber (attached) in, wry corrrru'ira-
�T' ,�als�o Mac. The Waal d
WeltyWateWeltya N. tx y Sheet. Rlegh, NC
27604-1148 between the hours of B:OOam and
5:00pm to renew i R r r ml:a i an fie.
H-S November'17, 2009

•
•
4. Va lue 52,775 each.52,500 each, oral l six
forS12,000. [phone]
Or"titsat' PLyll lOriY,^^ aadin' Vsat
Www:teiant0 andi't Of'Employ
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Public Notice
North Carolina Environmental Management CtrrmisslorVNPDES Unit
1617 Mall Service Center,Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES Wastewater Perron
The North Carolina Environmental Management Commission proposes to issue a NPDES
wastewater discharge permit to the person(s) listed below.
Written comments regarding the proposed permit will be accepted until 30 days after the
Publish date of this notice. The Director of the NC Division of Water Quality (DWQ) may
hold a public hearing should there be a significant degree of public interest. Please mall
comments and/or information requests 10 DWQ at the above address. Interested persons
may visit the DWQ at 512 N. Salisbury Street, Raleigh, NC to review information on file.
Additional information on NPDES permits and this notice may be found on our website:
www.ncwaterqual ity.org, or by calling [phone].
NPDES Permit Number NC0025241, Orange Water and Sewer Authority - -Mason Farm
WWTP, Orange County, has applied for modification of Its permit discharging treated
wastewater to Morgan Creek in the Cope Fear River Basin. The facility is requesting
expansion of its design flow from 12 MGD to 14.5 MGD. Currently CBOD, NH3, Total
residual chlorine, fecal coliform and total phosphorus are water quality limited. This
discharge may affect future allocations in this portion of the receiving stream.
Halifax County Schools requested renewal of permit N00038610 for Pittman Elementary
School WWTP in Halifax County. This permitted facility discharges treated wastewater to
an unnamed tributary to Burnt Coal Swamp in the Tar -Pamlico River Basin.
Halifax County Schools requested renewal of permit NC0038580 for Eastman Middle
School WWTP in Halifax County; this permitted discharge is treated wastewater to an
unnamed tributary to Little Fishing Creek In the Tar -Pamlico River Basin.
Halifax County Schools requested renewal of permit NC0038644 for Dawson Elementary
School WWTP in Halifax County; this permitted discharge Is treated wastewater to an
unnamed tributary to Deep Creek, Tar -Pamlico River Basin.
Chowan County (P.O. Box 1030, Edenton, NC 27932) has applied for renewal of NPDES
permit N00032719 for the Valhalla Water Treatment Plant in Chowan County. This
permitted facility discharges treated wastewater to Rockyhock Creek In the Chawan
River Basin. Currently total residual chlorine and total chloride are water quality limited.
This discharge may affect future allocations in this portion of the Chowan River Basin.
Unifi-Kinston, LLC, 4693 Hwy 11 North, Kinston, NC 28502, has applied fora modlf )cation of
Its NPDES permit (N00003760) discharging treated industrial wastewater to the Neuse
River in the Neuse River Basin. The NPDES permit is being modified to include the
discharge of stormwater and low -flow landfill leachate. This discharge may affect future
discharges In thls portion of the river basin
Durham County, Triangle WWTP, NC0026051, has applied for an NPDES permit renewal.
This facility discharges to Northeast Creek in the Cape Fear River Basin. Currently BOD
and ammonia are water quality limited. This discharge may affect future discharges In
this portion of the receiving stream.
The City of Durham, 101 City Hall Plaza, Durham, NC 27701 has applied for renewal of
NPDES permit NC0047597 for its South Durham Water Reclamation Facility in Durham
County. This permitted facility discharges treated wastewater 10 an unnamed tributary to
New Hope Creek in the Cape Fear River Basin. Currently, BOD, ammonia nitrogen, total
residual chlorine, total phosphorus, and total nitrogen are water quality limited. This
discharge may affect future allocations in this portion of the watershed.
Town of Macclesfield has requested renewal of permit NC0050661 for the Macclesfield
WWTP In Edgecombe County. This permitted discharges is treated domestic wastewater
to Briery Branch In the Tar -Pamlico River Basin.
Fearrington Utilities, Inc. (2000 Fearrington Village, Pittsboro, NC 27312) has applied for
renewal of NPDES permit number N00043559 for the Fearrington Village WWTP In
Chatham County. This permitted facility discharges filter -backwash wastewater to in the
Bush Creek in the Cope Fear River Basin. Some parameters may be water quality limited,
which may affect future allocations in this portion of the Cape Fear River Basin.
Aqua North Carolina (202 MacKenan Court, Cary, North Carolino 27511) hos applied for
renewal of NPDES permit NC0056413 for Chatham Water Reclamation Facility (formerly
Carolina Meadows WWTP) in Chatham County. This permitted facility currently
discharges 180,000 gallons per day treated wastewater into Morgan Creek in the Cope Fear
River Basin. Currently, BOD, ammonia nitrogen, and total residual chlorine are water
quality limited. This discharge may affect future allocations in this portion of the Cape
Fear River Basin.
City of Burlington ((P.O.tBox 1358, Burlington, NC 27216-1358), has applied for renewal of
NPDES permit number NC0023876 for the South Burlington WWTP. This permitted facility
discharges treated wastewater to the Big Alamance Creek in the Cape Fear River Basin.
Some parameters may be water quality limited, which may affect future allocations in
this portion of the Cape Fear River Basin.
City of Burlington, NPDES permit N00023868, has applied for renewal of its permit
discharging to the Haw River In the Cape Fear River Basin. BOD, ammonia, total residual
chlorine and total phosphorus are water quality limited parameters. This discharge may
affect future allocations Into the receiving stream.
City of Mebane, permit No. NC0021474, hos applied for renewal of Its permit discharging to
Moadams Creek In the Cape Fear River Basin. 80D, ammonia, total residual chlorine,
fluoride and mercury are water quality limited parameters. This discharge may affect
future allocations in this portion of the receiving stream.
The City of Graham, NPDES permit NC0021211, hos applied for renewal of its permit
discharging to the Haw River in the Cape Fear River Basin. BOD, ammonia, total residual
chlorine and total phosphorus are water quality limited. The discharge may affect future
allocations in this portion of the receiving stream.
N&0: November 7, 2009
COUNTER HELP
positions, must t
Hon. 919-848.1310
other
CLEANERS - Exi
MUST have own
drivers license. C
Tl
. &
seeks a few
independent
newspapers i
candidates N
portation and ,
Early moming
Call Mik
elder/child ca
CHILD CARE SE
located In our D
ES. Look for C
under that head',
SERVICES.
HOUSEKEEPEF,
ton. 1-2 days wk
FRESH SHRIMP,
Caught. 252-725-7i
lawn & garde
TROYBILT Walk
Murray Pushmo
der 5200 nego. 9.
woodstoves
ALL OAK, 'cure
.Pick-up truck Ir
3CORDS, 5350,2r
524-0326 or 422.3
DRY OAK FIRE'
stacked. Call 919
FIREWOOD: Dry 8
stacked. 919-720-72
N. RALEIGH Fire
Oak, 1/2 Cord 585.
ered. 919-604-1418
IMEM
CRAFT&BAKE S.
17th annual Craft t
at Southeastern Bi
Seminary in Wake
7th from 9am-3pm.
open to the public.
www.sebts.edu/co.

ATA
bENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Govemor Director Secretary
Patrick W. Baker, Mayor
City of Durham
101 City Hall Plaza, 3rd Floor
Durham, North Carolina 27701
Subject:
Dear Mr. Baker:
October 1, 2009
Notification of Intent to Modify NPDES Permit NC0047597
to Incorporate Jordan Lake Nutrient Requirements
South Durham WRF
Durham County
Governor Bev Perdue recently signed legislation to complete passage of rules for the Jordan Lake
Nutrient Management Strategy. The Strategy includes a Wastewater Discharge rule (T15A NCAC 02B
.0270) that applies to your wastewater treatment facility. Pursuant to Sub -Item (6)(d) of that rule, I am
writing to notify you of (1) the nutrient allocations assigned to your facility and (2) the Division of
Water Quality's intent to modify the facility's NPDES permit to include nutrient limits as provided in
the rule. I also wish to remind you of other provisions of the rule that require your prompt attention.
This letter addresses only certain provisions of the Jordan Lake Wastewater Discharge rule. I encourage
you to familiarize yourself with the remainder of this rule.
Nutrient Allocations. The Wastewater Discharge rule establishes the maximum loads of nitrogen and
phosphorus that can be released from wastewater treatment facilities into the Jordan Lake watershed.
The rule specifies that these wasteload allocations are to be divided among the existing facilities in
proportion to their 2001 permitted flows (with certain exceptions).
Your facility has been assigned nitrogen and phosphorus allocations. The allocations are expressed as
annual mass loadings delivered to the lake. Due to foreseeable losses between the discharge point and
the lake, they are also expressed as the equivalent discharge loads at the point of discharge. The
delivered and the corresponding discharge allocations assigned to your facility are as follows:
NC0047597
Delivered Allocation
(lb/yr)
Transport
Factor (%)
Discharge Allocation
(lb/yr)
Total Nitrogen
139,009
75
185,345
Total Phosphorus
9,415
67
14,053
2001 Permitted Flow: 20 MGD
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
interne: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
Nose Carolina
�turally

Patrick W. Baker, Mayor
Notification of Intent to Modify NPDES Permit
October 1, 2009
Intent to Modify Permit. The new rule specifies -that facilities with permitted flows at or above 0.1
MGD, including yours, will be subject to effluent limits for nitrogen and phosphorus. The effluent
limits will equal the facility's discharge allocations. The new phosphorus limits become effective
beginning with calendar year 2010. Nitrogen limits become effective beginning with calendar year
2016.
It is the Division's intent to modify the affected permits by the end of 2009 to include the new
phosphorus limits. We will draft permit modifications for the affected facilities in the coming weeks.
As with any such permit action, the proposed modifications will be subject to public review, and we
will provide you with a copy of the draft permit at that time.
The Division will add nitrogen limits during the 2011 permit renewals, with a compliance date of 2016.
Process Optimization. The rule specifies that no later than six months after its effective date, each
discharger with a permitted flow greater than or equal to 0.5 MGD must "evaluate its treatment
facilities and operations and identify further opportunities to improve and minimize nitrogen
reduction in the existing facilities...; and submit a report to the Division documenting its findings,
proposing optimization measures, and describing expected results."
Please provide three copies of your report to the Division at the following address no later than
February 11, 2010:
Division of Water Quality
Surface Water Protection Section, Point Source Branch
Attn: Jordan Lake Coordinator
1617 Mail Service Center
Raleigh, NC 20699-1617
Each discharger must implement the proposed measures no later than six months after the Division
accepts the report and continue until such time as the facility is upgraded for nitrogen removal. The
affected dischargers must also submit annual progress report to the Division for a period of five years.
If you have any questions regarding these requirements, please contact Mike Templeton at (919) 807-
6402 or at [e-mail].
Sincerely,
Coleen H. Sullins
cc: Robert Dodson - 101 City Hall PIz, Durham, NC 27701
Raleigh Regional Office
NDPES Files
Central Files
2