NC0020354_Permit (Modification)_20140801

NPDES DOCUMENT SCANNIN`: COVER SHEET
NPDES Permit:
NC0020354
Pittsboro WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification 7,
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
August 1, 2014
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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
August 1, 2014
Mr. Bryan Gruesbeck, Town Manager
Town of Pittsboro
PO Box 759
Pittsboro, North Carolina 27312
Subject: Final NPDES Permit Modification
Permit NC0020354
Pittsboro WWTP
Chatham County
Class N Facility
Dear Mr. Gruesbeck:
John E. Skvarla, III
Secretary
Division of Water Resources (Division) personnel have reviewed and approved your application for
modification of the subject permit. Accordingly, we are forwarding the attached NPDES permit. This
permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated
October 15, 2007 (or as subsequently amended).
The final permit modification contains the following changes from your previous permit:
• The modified permit includes an additional effluent page for Outfall 001 for the expanded flow of
1.249 MGD to Robeson Creek. The flow for outfall 002 was reduced to 1.97 MGD to maintain the
total permitted flow at 3.22 MGD.
• The Supplement to Permit cover Sheet was modified to eliminate the detailed description of the
proposed 3.22 MGD treatment system since the plant has not been designed yet.
• Condition A. (4) was modified to make a correction in the effective date to meet the Total Nitrogen
load delivered to Jordan Lake. The effective date is 1/1/2019.
• A special condition was added to the draft permit to address the Environmental Protection Agency's
(EPA's) pending requirement for you to provide electronically -submitted Discharge Monitoring
Reports (eDMRs). The Division intends to fully implement the eDMR program as soon as
practicable. See Condition A.(10.) in permit. For information on eDMR, registering for eDMR and
obtaining an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr. For information on EPA's proposed NPDES
Electronic Reporting Rule, please visit the following web site:
http://www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
During the draft permit review period the Division received comments from the US Fish and
Wildlife Service and the North Carolina Wildlife Resources Commission. The comments generally supported
the modification to increase the flow at Robeson Creek but expressed concerns with impacts to protected
species known to be present in the Haw River due to ammonia concentrations in the proposed Haw Rive
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet: www.ncwaterquality.org
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Mr. Bryan Gruesbeck 2
August 1, 2014
discharge. Both agencies reiterated the recommendations provided during the Environmental ImItact
Statement review which included adopting measures to mitigate secondary and cumulative impacts to the
Haw River.
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 demand is made, this
decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or permits
required by the Division of Land Resources, the Coastal Area Management Act or any other federal or local
governmental permits that may be required.
If you have any questions concerning this permit, please contact Teresa Rodriguez at telephone
number [phone] or at email [e-mail].
Sincerely,
Thomas A. Reeder
/Director, Division of Water Resources
cc: NPDES Files
Central Files
EPA Region4 (e-copy)
Raleigh Regional Office / Surface Water Protection Section
Aquatic Toxicology Unit (e-copy)
ESS / Ecosystems Unit (e-copy)

NPDES Permit No. NC0020354
t
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION ION 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
Town of Pittsboro
is hereby authorized to discharge wastewater from a facility located at the
Town of Pittsboro WWTP
Off Small Street Extension
Chatham County
to receiving waters designated as Robeson Creek and the Haw 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 modification shall become effective August 15, 2014.
This permit and the authorization to discharge shall expire at midnight on April 30, 2016.
Signed this day August 1, 2014.
omas A. Reeder, Director
1541( Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 17

NPDES Permit No. NC002d354
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby superseded. As
of this permit issuance, any previously issued permit bearing this number is no Ionger effective. Therefore, the
exclusive authority to operate and discharge from this facility/ arises under the permit conditions, requirements,
terms, and provisions included herein.
The Town of Pittsboro is hereby authorized to:
1. Continue to operate an existing 0.75 MGD extended aeration treatment system consisting of the
following components:
• Manual and mechanical bar screen
• Diffused aeration basins
• Clarifiers
• Phosphorous removal
• High -rate sand filters
• Sludge thickening
• Aerobic sludge digestion
• Ultraviolet disinfection
• Effluent flow measurement
• Cascade post aeration
The facility is located at the Pittsboro WWTP, 458 Small St., Pittsboro in Chatham County.
After receiving an Authorization to Construct from the Division and upon submittal of an
engineer's certification, operate the wastewater treatment facility at a treatment capacity of 1.249
MGD.
2. After receiving an Authorization to Construct from the Division and submitting an engineer's
certification, operate a 3.22 MGD wastewater treatment facility.
3. Discharge from said treatment works at the location specified on the attached map into Robeson
Creek (0.75 MGD and 1.249, outfall 001), and into the Haw River (1.971 MGD, outfall 002), both
classified as WS-IV NSW waters in the Cape Fear River Basin.
Page 2 of 17

NPDES Permit No. NC0020354
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001
F eginning upon the effective date of this permit and lasting until expiration or expansion to 1.249 MGD,
the Permittee is authorized to discharge treated wastewater from Outfall 001 to Robeson Creek. Such
discharges shall be limited and monitoredll by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location'
Flow
0.75 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor & Report
Monthly
Recording or
Calculated
Influent or Effluent
BOD, 5-day, (20°C) 2
(April 1— October 31)
5.0 mg/L
7.5 mg/L
3/Week
Composite
Influent & Effluent
BOD, 5-day, (20°C) 2
(November 1— March 31)
10.0 mg/L
15.0 mg/L
3/Week
Composite
Influent & Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent & Effluent
• NH3 as N
2.0 mg/L
6.0 mg/L
3/Week
Composite
Effluent
Total Residual Chlorine4
17 pg/L
3/Week
Grab
Effluent
pHS
3/Week
Grab
Effluent
Temperature (°C)
•
Daily
Grab
Effluent
Temperature (°C)
3/Week
Grab
Upstream & Downstream
Dissolved Oxygen3
3/Week
Grab
Effluent,
Upstream & Downstream
Fecal Coliform
(geometric mean)
200/100 mL
400/100 mL
3/Week
Grab
Effluent,
Upstream & Downstream
Conductivity
3/Week
Grab
Effluent,
Upstream & Downstream
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N
Monitor & Report (mg/L)
Weekly
Composite .
Effluent
Total Nitrogen, TN6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load'�8
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Phosphorus, TP 9
2.0 mg/L Quarterly Average
Weekly
Composite
Effluent
TP Load'�8
Monitor
322
& Report (Ib/mo)
b (Apr. 1-Oct. 31)
Monthly
Seasonally
Calculated
Effluent
Total Nickel
25 pg/L
261 pg/L
Weekly
Composite
Effluent
Total Copper
Monthly
Composite
Effluent
Total Zinc
Monthly
Composite
Effluent
Chronic Toxicity 10
Quarterly
Composite
Effluent
All footnotes are listed on the following page.
Page 3 of 17

NPDES Permit No. NC0020354
Footnotes from Effluent Limitations and Monitoring Requirements (Outfall 001):
1. Sample locations: Upstream = at least 100 yards above the outfall; Downstream = at least 100 yards
downstream from the outfall. Instream monitoring shall be conducted 3/Week during June, July,
August, and September, and once per week during the remainder of the year. Instream monitoring is
provisionally waived in light of the Permittee's participation in the Upper Cape Fear River Basin
Association. Instream monitoring shall be conducted as stated in this permit should the Perinittee end its
participation in the Association.
2. The monthly average BOD5 and Total Suspended Residue 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/1.
4. Total Residual Chlorine limit applies if chlorine or chlorine derivative is used for disinfection. The
Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with this
permit. The Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory even if these values fall below 50 µg/1.
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
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 or Phosphorus discharged in a given period of
time. See Condition A. (7.).
8. Compliance with mass limits shall be determined in accordance with Conditions A.(5.) and A.(6.).
9. The quarterly average for total phosphorus shall be the average of composite samples collected weekly
during each calendar quarter (January -March, April -June, July -September, October -December).
10. Chronic Toxicity (Ceriodaphnia) P/F at 90%; March, June, September & December. See Condition A.(8.).
11. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring
reports electronically using NC DWR's eDMR application system. See Special Condition A (10).
There shall be no discharge of floating solids or foam.
Page 4 of 17

NPDES Permit No. NC0020354
A.(2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001
l eginning upon expansion above 0.75 MGD and lasting until expiration, the Permittee is authorized to
discharge treated wastewater from Outfall 001 to Robeson Creek. Such discharges shall be limited and
monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location'
Flow
1.249 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor & Report
Monthly
Recording or
Calculated
Influent or Effluent
BOD, 5-day, (20°C) 2
(April 1— October 31)
5.0 mg/L
7.5 mg/L
3/Week
Composite
Influent & Effluent
BOD, 5-day, (20°C) 2
(November 1— March 31)
10.0 mg/L
15.0 mg/L
3/Week
Composite
Influent & Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent & Effluent
NH3 as N (April 1 — October
31)
1.0 mg/L
3.0 mg/L
3/Week
Composite
Effluent
NH3 as N (November 1—
March 31)
2.0 mg/L
g
6.0 mg/L
9
3 /Week
Composite
Effluent
Total Residual Chlorine4
17 pg/L
3/Week
Grab
Effluent
pH 5
3/Week
Grab
Effluent
Temperature (°C)
Daily
Grab
Effluent
Temperature (°C)
3/Week
Grab
Upstream & Downstream
Dissolved Oxygen3
3/Week
Grab
Effluent,
Upstream & Downstream
Fecal Coliform
(geometric mean)
200/100 mL
400/100 mL
3/Week
Grab
Effluent,
Upstream & Downstream
Conductivity
3/Week
Grab
Effluent,
Upstream & Downstream
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen, TN6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load'�8
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Phosphorus, TP 9 .
2.0 mg/L Quarterly Average
Weekly
Composite
Effluent
TP Load'�e
Monitor & Report (Ib/mo)
322 lb (Apr. 1-Oct. 31)
Monthly
Seasonally
Calculated
Effluent
Total Nickel
25 pg/L
261 pg/L
Weekly
Composite
Effluent
Total Copper
Monthly
Composite
Effluent
Total Zinc
Monthly
Composite
Effluent
Chronic Toxicity 10
Quarterly
Composite
• Effluent
Effluent Pollutant Scan
Monitor and Report
Footnotell
Footnote 11
Effluent
All footnotes are listed on the following page.
Page 5 of 17

NPDES Permit No. NC0020354
Footnotes from Effluent Limitations and Monitoring Requirements (Outfall 001):
1. Sample locations: Upstream = at least 100 yards above the outfall; Downstream = at least 100 yards
downstream from the outfall. Instream monitoring shall be conducted 3/Week during June, July,
August, and September, and once per week during the remainder of the year. Instream monitoring is
provisionally waived in light of the Permittee's participation in the Upper Cape Fear River Basin
Association. Instream monitoring shall be conducted as stated in this permit should the Permittee end its
participation in the Association.
2. The monthly average BOD5 and Total Suspended Residue 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/1.
4. Total Residual Chlorine limit applies if chlorine or chlorine derivative is used for disinfection. The
Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with this
permit. The Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory even if these values fall below 50 µg/1.
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. •
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 or Phosphorus discharged in a given period of
time. See Condition A. (7.).
8. Compliance with mass limits shall be determined in accordance with Conditions A.(4.) and A.(5.).
9. The quarterly average for total phosphorus shall be the average of composite samples collected
weekly during each calendar quarter (January -March, April -June, July -September, October -
December).
10. Chronic Toxicity (Ceriodaphnia) P/F at 90%; March, June, September & December. See Condition A.(8.).
11. The permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special
Condition A. (9).
There shall be no discharge of floating solids or foam.
Page 6 of 17

NPDES Permit No. NC0020354
A.(3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 002
$eginning upon expansion above 1.249 MGD and lasting until expiration, the Permittee is authorized to
discharge treated wastewater from Outfall 002 to the Haw River. Such discharges shall be limited and
monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
'Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow (MGD)
1.971 MGD
Continuous
Recording
Influent or Effluent
Total Monthly Flow (MG)
Monitor & Report
Monthly
Recording 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)
10.0 mg/L
15.0 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)
1.0 mg/L
3.0 mg/L
3/Week
Composite
Effluent
NH3 as N
(November 1— March 31)
2.0 mg/L
6.0 mg/L
3/Week
Composite
Effluent
Total Residual Chlorine4
28 pg/L
3/Week
Grab
Effluent
pH 5
Daily
Grab
Effluent
Temperature (°C)
Daily
Grab
Effluent
Temperature (°C)
3/Week
Grab
Upstream & Downstream
Dissolved Oxygen3
3/Week
Grab
Effluent,
Upstream & Downstream
Fecal Coliform
(geometric mean)
14/100 mL
25/100 mL
•
Daily
Grab
Effluent,
Upstream & Downstream
Conductivity
3/Week
Grab
Effluent,
Upstream & Downstream
TKN
Monitor & Report (mg/L)
Weekly
Composite
Effluent
NO3-N + NO2-N
Monitor & Report (mg/L)
Weekly
Composite
Effluent
Total Nitrogen, TN6
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TN Load 7,8
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
Effluent
Total Phosphorus, TP
Monitor & Report (mg/L)
Weekly
Composite
Effluent
TP Load'18
Monitor & Report (!b/mo)
Monitor & Report (lb/yr)
Monthly
Annually
Calculated
Effluent
Total Nickel
Monthly
Composite
Effluent
Total Copper
Monthly
Composite
Effluent
Total Zinc
Monthly
Composite
Effluent
Chronic Toxicity 9
Quarterly
Composite
Effluent
Effluent Pollutant Scan
Monitor and Report
Footnote 10
Footnote 10
Effluent
All footnotes are listed on the following page.
Page 7 of 17

NPDES Permit No. NC0020354
Footnotes from Effluent Limitations and Monitoring Requirements (Outfall 002):
1. Sample locations: Upstream = at least 100 yards above the outfall; Downstream = at least 100 yards
downstream from the outfall. Instream monitoring shall be conducted 3/Week during June, July, August,
and September, and once per week during the remainder of the year. Instream monitoring is provisionally
waived in light of the Permittee's participation in the Upper Cape Fear River Basin Association. Instream
monitoring shall be conducted as stated in this permit should the Permittee end its participation in the
Association. However, upstream and downstream monitoring for fecal coliform must be performed and
reported regardless of association membership.
2. The monthly average BOD5 and Total Suspended Residue 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/1.
4. Total Residual Chlorine limit applies if chlorine or chlorine derivative is used for disinfection. The Division
shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with this permit. The
Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
even if these values fall below 50 1.1.g/1.
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
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 or Phosphorus discharged in a given period of time.
See Condition A. (7.).
8. Compliance with mass limits shall be determined in accordance with Conditions A.(4.) and A.(5.).
9. Chronic Toxicity (Ceriodaphnia) P/F at 4.0 %; March, June, September & December. See Condition A.(8.).
10. The permittee shall perform three Effluent Pollutant Scans during the term of this permit. See Special
Condition A. (9).
There shall be no discharge of floating solids or foam.
A.(4.) COMBINED LIMITATIONS - Outfall CO1 (Combined Outfalls 001 and 002)
During the period beginning on the dates specified below and lasting until permit expiration, the
Permittee is subject to the following combined limitations for discharges from Outfalls 001 and 002 in
addition to any limits specified in Conditions A.(1.) and A.(2.) of this permit:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Locations
Flow
3.22 MGD
•
See Conditions A.(1.) and A.(2.)
Combined 001 & 002
TP Delivered Load 2
3,731 Ib/yr
Annually
Calculated
Combined 001 & 002
TN Delivered Load 2
Monitor and Report
27,514 lb/yr (effective 1/1/2019)
Annually
Calculated
Combined 001 & 002
Footnotes:
1. Values at Combined Outfall CO1 are the sum of the corresponding values at Outfalls 001 and 002.
2. Compliance with the nutrient limits shall be determined in accordance with Conditions A.( 5.) and A.(6.)
of this permit.
Page 8 of 17

NPDES Permit No. NC0020354
The Pittsboro WWTP is assigned Total Phosphorus (TP) and Total Nitrogen (TN) allocations
under the following authorities:
(i.)
(iL)
A.(5.) NUTRIENT ALLOCATIONS AND LIMITS
(a•)
Robeson Creek Total Phosphorus TMDL, approved 1/ 13/ 2004.
Jordan Lake TMDL, approved 9/20/2007 and incorporated into Jordan Lake Nutrient
Management Strategy - Wastewater Discharge Requirements, T15A NCAC 02B .0270 (the
"wastewater rule").
The purpose of this condition is to list the allocations assigned to the Permittee and any changes
in the allocations resulting from transfers to or from the Permittee. For compliance purposes, •
these allocations do not supersede any TN or TP limit specified elsewhere in this permit or in the
NPDES permit of a compliance association of which the Permittee is a Co-Permittee Member.
(c.) The•Robeson Creek TMDL limits the discharge of Total Phosphorus from the Pittsboro WWTP
into Robeson Creek (Outfall 001) to 322 lb TP per summer season (April 1- October 31).
(d.) The Jordan Lake TMDL and wastewater rule limit Total Nitrogen and Total Phosphorus
contributions from point and nonpoint sources. into Jordan Lake and its tributaries. The following
table lists the allocations assigned to, acquired by, or transferred to the Permittee in accordance
with the Jordan Lake wastewater rule 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 (I)
STATUS
• Delivered (Ib/yr)
Discharge (Ib/yr)
Base
Assigned by Rule
(T15A NCAC 02B .0270)
g/11/09
27,514
36,202
Active
TOTAL
27,514
36,202
Active
Footnote:
(1) Nitrogen Transport Factor = 76% at Robeson Creek (Outfall 001), 99% at Haw River (Outfall 002).
Total Phosphorus Allocation
ALLOCATION
TYPE
SOURCE
DATE
ALLOCATION AMOUNT (1)
STATUS
Delivered (Ib/yr)
Discharge (Ib/yr)
Base
Assigned by Rule
(T15A NCAC 02B .0270)
8/11/09
3,731
4,551
Active
TOTAL
3,731
4,551
Active
Footnote:
(1) Phosphorus Transport Factor = 82% at Robeson Creek (Outfall 001), 99% at Haw River (Outfall 002).
(e.) 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 listed 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.
Page 9 of 17

NPDES Permit No. NC0020354
A.(6.) ANNUAL NUTRIENT LIMITS - Jordan Lake
(a.) Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits established under' the i
Jordan Lake Nutrient Management Strategy for NPDES wastewater dischargers are annual values
and apply on a calendar year basis. (The provisions of this special condition are limited to these
annual limits and do not apply to seasonal limits established in the Robeson Creek TMDL.)
For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP)
Load limit in this Permit if:
(b.)
(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.)
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) 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.
(iii.) Any requests for modification should be sent to:
NCDENR/ DWR/ 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.
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.
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
Page 10 of 17

NPDES Permit No. NC0020354
association.
A.(7.) CALCULATION AND REPORTING OF NUTRIENT LOADS
The Permittee shall calculate and report monthly and annual nutrient loads as follows:
(a.) Calculation of Discharge Loads (Outfalls 001 and 002): The Permittee shall calculate monthly and
annual discharge loads for each outfall 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 (Outfall C01): The Permittee shall calculate annual delivered
loads as follows:
(i.) Individual Outfalls 001 & 002:
Annual Delivered Load (lb/yr, TN or TP) = Annual Discharge Load (lb/yr) x TF
where TF = Transport Factor for each outfall, as specified in Condition A.(5.),
Nutrient Allocations and Limits.
(ii.) Combined Outfall C01:
Annual Delivered Load (lb/yr, TN or TP) = Sum of the Outfall 001 & 002 Annual Delivered
TN (or TP) Loads for the calendar year •
(c.) Reporting of Nutrient Discharges: The Permittee shall report monthly TN and TP discharge loads
for Outfalls 001 and 002 in the appropriate discharge monitoring report.
(d.) Reporting of Combined Delivered Loads: The Permittee shall report each calendar year's
combined delivered loads for Outfall CO1 with the December report for that year and shall
append the report with a summary of monthly loads and calculations.
Page 11 of 17

NPDES Permit No. NC0020354
A.(8.) CHRONIC TOXICITY PERMIT LIMITS (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant'
mortality to Ceriodaphnia dubia at an effluent concentration of 90% at Outfall 001 (Robeson Creek) and
4 % at Outfall 002 (Haw River).
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised- December 2010) or subsequent versions. The tests will be performed performed during the
months of March, June, September, and December. These months signify the first month of each
three month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be
obtained during representative effluent discharge and shall be performed at the NPDES permitted final
effluent discharge below all treatment processes.
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 -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-
3 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Aquatic Toxicology Branch, Water 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. Assessment of toxicity compliance is based on
the toxicity testing quarter, which is the three month time interval that begins on the first day of the
month in which toxicity testing is required by this permit and continues until the final day of the third
month.
Page 12 of 17

NPDES Permit No. NC0020354
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Resources indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently than required by this permit, the results of
such monitoring shall be included in the calculation & reporting of the data submitted on the DMR &
all AT Form 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.
Page 13 of 17

NPDES Permit No. NC002U354
A. (9.) 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: 2014, 2015, and 2016. 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-nitro s o di-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Reporting. Test results shall be reported on DWR 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
Page 14 of 17

NPDES Permit No. NC0020354
following address: NC DENR/ DWR/ Central Files, 1617 Mail Service Center, Raleigh, North
Carolina 27699-1617.
A. (10.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting ESupersedes Section D. (2.) and Section E. (5.) (a)1
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin
reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the
facility being physically located in an area where less than 10 percent of the households have
broadband access, then a temporary waiver from the NPDES electronic reporting requirements -
may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1,1.1,
2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to
the mailing address above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be
submitted in writing to the Division for written approval at least sixty (60) days prior to the date the
facility would be required under this permit to begin using eDMR. Temporary waivers shall be
valid for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted
Page 15 of 17

NPDES Permit No. NC0020.354
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http:/ /portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part
II, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.) (b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http:/ /portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the states eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL
BE ACCEPTED:
"1 certzfii, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquinj of the person or persons who manage the system, or
those persons directly responsible forgathering the information, the information submitted is, to the best of
my knowledge and belief, true, accurate, and complete.1 am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
3. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.41].
Page 16 of 17

NPDES Permit No. NC0020354
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Town of Pittsboro WWTP - NC0020354 Chatham County
Outfall 001: Robeson Creek Stream Class — WS-IV Lat 35° 42' 48"
Outfall 002: Haw River Stream Class — WS-IV Lat 35° 43' 50"
USGS Quad: E22NW, Pittsboro Sub -basin: 03-06-04 HUC: 03030002
Long 79° 10' 14"
Long 79° 06' 23"
N
Facility Location
not to scale
Page 17 of 17

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Affidavit Of Publication: Lee County, North Carolina
a newspaper with a general circulation to actual paid subscribers admitted to the
Periodicals class in Lee County. The Sanford Herald has been published at least one
ek for at least 25 of the 26 consecutive weeks immediately preceding the date of this
affidavit.
Advertising Representative of The Sanford Herald, a newspaper published in Lee
rth Carolina, being duly sworn, deposes and says: that the attached advertisement of
notice, in the action entitled:
was duly published in the afor said newspaper once a week for l consecutive weeks, beginning the issue dated the � day of ic9DI � g g with
LI , and ending with the issue dated the Ja day of
Received of Ai CPIIJi2
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By:
Holly Hight,
ssified Adve r ising Representativ
Sworn to and subscribed before me, this
day of
Notary
-i5
My Commission Expires

North Carolina Wildlife Resources Commission
Gordon Myers, Executive Director
MEMORANDUM
TO: Teresa Rodriguez, NPDES Permitting Unit
Division of Water Resources
FROM: Shari L. Bryant, Piedmont Region Coordinator
Habitat Conservation Program
DATE: 22 May 2014
SUBJECT: NPDES Permit Modification for Town of Pittsboro, Pittsboro Wastewater Treatment
Plant, Chatham County, NPDES Permit No. NC0020354
Biologists with the North Carolina Wildlife Resources Commission have reviewed the subject
document. Our comments are provided in accordance with provisions of the Clean Water Act of 1977 (as
amended), Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667e), and
North Carolina General Statutes (G.S. 1 13-131 et seq.).
The Town of Pittsboro (Town) has applied for a modification of their NPDES permit to discharge
3.22 million gallons per day (MGD) of treated wastewater into Robeson Creek and Haw River in the
Cape Fear River basin. The draft permit indicates the Town will continue to operate an existing 0.75
MGD extended aeration treatment system that discharges to Robeson Creek; the modification includes
expansion to 1.249 MGD to discharge to Robeson Creek, and 3.22 MGD to discharge to Robeson Creek
and Haw River.
Robeson Creek is a tributary to Haw River and B.E. Jordan Reservoir in the Cape Fear River
basin. There are records for the federal and state endangered Cape Fear shiner (Notropis mekistocholas);
and the federal species of concern and state endangered brook floater (Alasmidonta varicosa) and yellow
lampmussel (Lampsilis cariosa) in Haw River. Also, B.E. Jordan Reservoir supports a diverse fishery
including largemouth bass (Micropterus salmoides), crappie (Pomoxis spp.), sunfish (Lepomis spp.),
catfish (Ictalurus spp.) and striped bass (Morone saxatilis).
In 2009, we provided comments on the Environmental Impact Statement (EIS) for the Proposed
Wastewater Treatment Plant and Discharges into Robeson Creek and the Haw River (Bryant, 29 April
2009; Bryant, 3 August 2009). We indicated a discharge to Robeson Creek or B.E. Jordan Reservoir
would minimize impacts to Cape Fear shiner and other rare species in Haw River; however, we
recognized there were other issues (e.g., water quality) related to an increased discharge to Robeson
Creek and the reservoir that made it a less feasible alternative than the Haw River discharge. In 2010, we
provided comments on an NPDES permit modification (Bryant, 26 October 2010).
Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: [phone] • Fax: [phone]

Page 2
22 May 2014
Pittsboro WWTP
NPDES Permit No. NC0020354
Our primary concerns with a Haw River discharge include impacts to water quality resulting from
treatment plant upsets, ammonia, and pharmaceutical and personal care products (PPCP)/endocrine
disrupting compounds (EDC). Should the permit be modified, we offer the following comments and
recommendations to reduce impacts to aquatic resources particularly to Cape Fear shiner and other rare
species in Haw River. -
1. In 2013, it was our understanding the Town was exploring the potential to increase their discharge to
Robeson Creek. Based on information provided in the EIS and previous NPDES permit modification,
the Town proposed a discharge of 0.75 MGD to Robeson Creek and 2.47.MGD to Haw River.
According to the draft NPDES permit, it appears that 1.249 MGD would be discharged to Robeson
Creek and 1.971 MGD to Haw River. We are pleased to see the discharge to Robeson Creek has been
increased; however, it is unclear whether additional increases in discharge to Robeson Creek are
possible to further reduce or eliminate the discharge to Haw River. We continue to prefer a discharge
c/to Robeson Creek or the reservoir.
2. In the EIS, the applicant indicated the wastewater treatment plant (WWTP) would incorporate flow
equalization and offline storage to ensure consistent effluent water quality and downstream protection
from overflows. At the time the EIS was reviewed the storage capacity for the WWTP had not been
designed; however, it was indicated that typically a five day storage pond is provided. The draft
¢`J permit does not appear to provide any information regarding the inclusion of flow equalization or a
storage pond. We continue to believe this is an important component of the project to minimize
impacts to downstream aquatic resources; therefore, we continue to recommend flow equalization and
the construction of a five day storage pond. Also, if not already in place, the WWTP should have an
emergency backup generator to prevent releases of untreated waste.
3. Dwyer et al. (2005) found that Cape Fear shiners had an IC25 of 8.8 mg/1 for ammonia. An IC25 is the
level at which an organism exhibited a 25 percent reduction in a biological measurement such as
reproduction or growth after a 7-day exposure. In addition, Augspurger et al. (2003) found that
ammonia concentrations that may be protective of freshwater mussels range from 0_3 to 1.0 mg/L
total ammonia as N at pH 8. Although we recognize the Haw River discharge has a low instream
waste concentration, we recommend developing a site -specific ammonia limit using EPA's Aquatic
Life Ambient Water Quality Criteria for Ammonia — Freshwater 2013. If the ammonia limits listed in
the draft permit for the Haw River discharge (i.e., monthly average 1.0 (summer) and 2.0 (winter),
and weekly average 3.0 (summer) and 6.0 (winter)) exceed the site -specific limits calculated for the
Haw River, then we recommend the site -specific limits are included in the permit.
4. Studies have shown PPCP and EDC in municipal wastewater effluent can cause adverse physiological
effects to fish and freshwater mussels (Bouchard et al. 2009, Bringolf et al. 2010, Farcy et al. 2011,
ar
Gagne et al. 2011 a, Gagne et al. 2011b, Liney et al. 2011, and Vajda et al. 2011). According to \(\ e-,3N
information provided during the review of the EIS, the treatment processes for the WWTP may Q
remove some PPCP and EDC. Due to the presence of Cape Fear shiner and other rare species in the
Haw River, we ask the Division of Water Resources and the Town to consider studies to document 'C c� - 4•-•�
the levels of PPCP and EDC in the wastewater discharge and Haw River pre- and post -discharge. If 1
the studies show increases in PPCP and EDC levels, then consider implementing measures to further Vs-; ,(`)lt?<�?
reduce or eliminate RPCP or EDC from wastewater prior to discharge. 7 p'\`
5. In our comments on the EIS, we expressed concerns about the secondary and cumulative impacts l�
resulting from the proposed WWTP expansion and recommended the Town implement the "Specific
Mitigation Measures for Waters Containing Federally Listed Species" in NCWRC's Guidance
Memorandum to Address and Mitigate Secondary and Cumulative Impacts to Aquatic and Terrestrial
Wildlife Resources and Water Quality (August 2002;
http://www.ncwildlife.org/Portals/0/Conserving/documents/2002 GuidanceMemorandumforSeconda

Page 3
22 May 2014
Pittsboro WWTP
NPDES Permit No. NC0020354
ryandCumulativelmpacts.pdf) due to the presence of the Cape Fear shiner in Haw River. Section F of
the EIS indicates these measures would be adopted within Tract 1 (Haw River) of the service area;
however, it is unclear whether these measures have been adopted. We continue to recommend these
measures are adopted to provide additional protection for Cape Fear shiner and other rare species in
Haw River.
Thank you for the opportunity to comment on this draft permit modification. If we can be of
further assistance, please contact our office at [phone] or [e-mail].
Literature cited
Augspurger, T., A. E. Keller, M. C. Black, W. G. Cope, and F. J. Dwyer. 2003. Derivation of water
quality guidance for protection of freshwater mussels (Unionidae) from ammonia exposure.
Environmental Toxicology and Chemistry 22(1 I ):2569-2575.
Bouchard, B., F. Gagne, M. Fortier, and M Fournier. 2009. An in -situ study of the impacts of urban
wastewater on the immune and reproductive systems of the freshwater mussel Elliptio
complanata. Comparative Biochemistry and Physiology Part C: Toxicology and Pharmacology
150(2):132-140.
Bringolf, R.B., R.M. Heltsley, J.T. Newton, C.B Eads, S.J. Fraley, D. Shea, W.G. Cope. 2010.
Environmental occurrence and reproductive effects of the pharmaceutical fluoxetine in native
freshwater mussels. Environmental Toxicology and Chemistry 29(6):131 1-1318.
Dwyer, F.J., D.K. Hardesty, C.E. Henke, C.G. Ingersoll, D.W. Whites, T. Augspurger, T.J. Canfield, D.R.
Mount, and F.L. Mayer. 2005. Assessing Contaminant Sensitivity of Endangered and
Threatened Aquatic Species: Part III. Effluent Toxicity Tests. Archives of Environmental
Contamination and Toxicology 48:174-183.
Farcy, E., F. Gagne, L Martel, M. Fortier, S. Trepanier, P. Brousseau, M. Fournier. 2011. Short-term
physiological effects of a xenobiotic mixture on the freshwater mussel Elliptio complanata
exposed to municipal effluents. Environmental Research 111(8):1096-I 106
Gagne, F., C Andre, P. Cejka, R. Hausler, and M Fournier. 201 1a. Evidence of neuroendocrine
disruption in freshwater mussels exposed to municipal wastewaters. Science of the Total
Environment 409(19):3711 3718.
Gagne, F., C Andre, P. Cejka, R. Hausler, and M Fournier. 2011 b. Alterations in DNA metabolism in
Elliptio complanata mussels after exposure to municipal effluents. Comparative Biochemistry
and Physiology Part C: Toxicology and Pharmacology 154(2):100-107.
Liney, K.E., J.A. Hagger, C.R. Tyler, M.H. Depledge, T.S. Galloway, and S. Jobling. 2011. Health
effects in fish of long-term exposure to effluents from wastewater treatment works.
Environmental Health Perspectives, April, 114(Suppl 1):81-89
Vajda, A.M., L.B. Barber, J.L. Gray, E.M. Lopez, A.M. Bolden, H.L. Schoenfuss, and D.O Norris. 2011.
Demasculinization of male fish by wastewater treatment plant effluent. Aquatic Toxicology,
June, 103(3-4):213-221.
ec: Ryan Heise, NCWRC
Sarah McRae, NCWRC

United States Department of the Interior
FISH AND WILDLIFE SERVICE
Raleigh Field Office
Post Office Box 33726
Raleigh, North Carolina 27636-3726
21 May 2014
Teresa Rodriguez
NCDENR-DWR-NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
RECEIVED/DENF I°WR
MAY 2'3 214
Water ReSOUr en
Permitting
SUBJECT: Comments regarding NC0020354-Town of Pittsboro WWTP Expansion Permit
Modification
Dear Ms. Rodriguez:
The US Fish and Wildlife Service (Service) has reviewed the NC Division of Water Resources'
23 April 2014 Notice for the Town of Pittsboro's (Town) request to modify its NPDES Permit
NC0020354 to expand its discharge to Robeson Creek to 1.249 MGD. In order to keep the
permitted discharge flow at the same level (3.22 MGD total), the Haw River outfall flow limit
was reduced to 1.971 MGD. Comments are provided pursuant to section 7 of the Endangered
Species Act (ESA) of 1973, as amended (16 U.S.C. 1531-1543).
Robeson Creek and the Haw River are tributaries to B.E. Jordan Reservoir in the upper Cape
Fear River basin. There are records of the federally endangered Cape Fear shiner (Notropis
mekistocholas) and the federal species of concern yellow lampmussel (Lanzpsilis cariosa) in the
Haw River above B.E. Jordan Reservoir. In addition, the Service is considering federal listing
under ESA for the brook floater (Alasmidonta varicosa) and the Septima's clubtail dragonfly
(Gomphus septima), both of which occur in the Haw River above the reservoir.
The Service soothe modification request by the Town to increase discharge flow to
Robeson Creek. Furthermore, the Service encourages the Town to continue to invest in better
technology and improved quality and quantity of effluent to be discharged at the Robeson Creek
outfall, thus potentially eliminating the need for the outfall location on the Haw River. Federal
goals for the conservation of trust resources depend explicitly on the sustained integrity of the
Haw River ecosystem. The Cape Fear Shiner Strategic Habitat Conservation Planning Team
(consisting of federal and state agency staff, University researchers, and other Cape Fear shiner
experts) has identified the Haw River (i.e., the entire length of the Haw River flowing through
Chatham County, ending at Jordan Lake) as necessary habitat for the recovery of the species.
The Service has reviewed the history of correspondence related to permitting the Town's
wastewater treatment plant (WWTP) and discharges to Robeson Creek and the Haw River. The
Service has also been engaged with the Town as it considers natural resource protection
measures, specifically those involving federally listed species, during the planning for the
development of Chatham Park. As the Town moves forward with planning Chatham Park

Page 2 of 3
Town of Pittsboro NPDES Permit Modification
21 May 2014
(especially regarding water and wastewater needs), the Service would like to remind the Town of
previously expressed water quality concerns for the Haw River discharge and subsequent
commitments the Town made as part of the Environmental Impact Assessment process leading
up to the final NPDES permit approval in 2011.
In 2009, the NC Wildlife Resources Commission (NCWRC) expressed concerns with a Haw
River discharge, specifically regarding impacts to water quality resulting from treatment plant
upsets, ammoniac copper, and pharmaceutical and personal care products/endocrine disrupting
compounds (PPCP) (NCWRC letters dated 4/29/2009, 8/3/2009, 10/26/2010). In response, the
Town indicated that flow equalisation, offline stor (e.g., five day storage pond), biological
nutrient reduction and sand filtration would-be incorporated, that the WWTP would be retrofitted
to provide additional treatment for PPCPs as technology advances, and that the Town would
adopt the additional protective measures detailed in NCWRC's Guidance Memorandum to
Address and Mitigate Secondary and Cumulative Impacts to Aquatic and Terrestrial Wildlife
Resources and Water Quality under both "General Mitigation Measures for All Watersheds" and
"Specific Mitigation Measures for Waters Containing Federally Listed Species" for those
portions of the service area (i.e., Tract 1) that flow to the Haw River (NCWRC letter dated
8/3/2009). Section F5 (pages 221-224) of the EIS available on the Town's website
(http://tinyurl.com/PBOWWTPEIS) specifically indicates that additional protective measures
will be implemented (e.g., 200ft buffers on perennial streams and 100ft buffers on intermittent
streams draining to the Haw River, 300ft buffers along the Haw River, and for new
developments draining to the Haw River (i.e. Tract 1) exceeding 6% imperviousness, the Town
requires the developer to include stormwater controls designed to replicate and maintain the
hydrographic condition at the site prior to the change in landscape, etc.).
The Service is taking this opportunity to reiterate the concerns raised by the NCWRC, and to
urge the Town to engage in further discussion about what accommodations are being
implemented based on NPDES permit conditions, the Environmental Impact Statement
mitigation measure commitments, and the considerations put forth in the Planned Development
District Master Plan for Chatham Park. Specifically, we encourage further discussion on the
following topics, particularly as they relate to the Haw River outfall:
> Planning for spills/accidents and how redundant systems can be utilized to protect listed
species habitat
> Contingency planning for impacts to species (e.g., propagation/reintroduction of species
of interest)
> Compliance monitoring, with special considerations for listed species
> Consideration of effluent concentrations at instantaneous low flows, as related to survival
of endangered species
> Considerations of maximum effluent flow cap to Haw River outfall location
> Water quality -species research opportunities

t
Page 3 of 3
Town of Pittsboro NPDES Permit Modification
21 May 2014
Thank you for the opportunity to comment on the Permit Modification. The potential direct and
indirect effects of the future infrastructure project on the Haw River remain significant concerns
to us. The Service hopes to continue discussions with the Town as they plan for growth and
uphold their obligations under ESA. If you have any questions regarding our perspectives on the
unique value of the stream for endangered species conservation or the urgency in implementing
strategies to address and manage impacts to rare species, please contact Sarah McRae at 919-
856-4520x16 or [e-mail].
ete Be i. n
Field Sup: isor
eC: Shari Bryant, NCWRC
William Terry, Mayor, Town of Pittsboro
Bryan Gruesbeck, Town Manager, Town of Pittsboro

Town Comments w/DENR responses
Draft NPDES permit modification
Permit NC0020354
Pittsboro WWTP
Chatham County
Class VI Facility
•Page 2, item 2.
Please omit or reword this section: ie: specific equipment is listed as anaerobic basins, oxidation ditch,
etc.). We will evaluate all available technologies and select the technology that best meets our needs,
while meeting the minimum effluent concentration standards.
DENR — We can reword this section and not include specific equipment.
•Page 6, item # 11.
Please verify effluent pollutant scan is required at 1.249 and above.
DENR— PPA are required for all facilities discharging > 1 MGD.
•Page 7, Effluent limitations and Monitoring Requirements.
Fecal Coliform monthly average is 14/100ml. Currently this is 200/100m1.
DENR— The fecal coliform limits for Outfal! 001 (at both flows) remain at 200/100 ml, the limit of 14/100
ml is only for Outfal1002. These were the same limits as the previous permit.
•Page 8.
TN compliance to 1/1/2018. Tom Belnick stated this to be in 2019 atmeeting in Pittsboro. Nutrient
TMDL's remain unchanged for both TP & TN.
DENR— ! will clarify compliance dates, it should be 2019
•Last Page
WET test to 4% from 5.1%? Please describe WET test and significance of this change.
DENR— The concentration (or g%) in the WET test is the In -stream Waste Concentration(!WC) calculated
based on the discharge flow and the 7Q10 of the receiving stream. The reason the concentration for the
WET test changed was because the !WC for Outfal! 002 will be reduced with the reduction in permitted
flow.
Thank you.
Fredric T. Royal, PE, Town Engineer

Av,1
a.,s71,..,
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
TO:
MEMORANDUM
Teresa Rodriguez
NPDES Complex Permitting Unit
NCDENR/Division of Water Resources
FROM: Michael L. Douglas, P.E., Regional Engineer
Public Water Supply Section
Raleigh Regional Office
SUBJECT: Draft National Pollutant Discharge
Elimination System Permit NC0020354
Pittsboro WWTP
Small Street Extension
Chatham County
DATE: April 29, 2014
Reference is made to the above -mentioned Draft National Pollutant Discharge Elimination System
Permit. Upon review of this permit application to continue to operate an existing 0.75 MGD Pittsboro
Wastewater Treatment Plant (WWTP) located off Small Street Extension in County, it appears that no adverse
effect on water quality will occur to the existing public water supply intakes. Pittsboro plans to seek 2
Authorization to Construct to operate the WWTP at treatment capacities of 1.249 MGD and 3.22 MGD.
We concur with the issuance of this permit provided this facility is operated and maintained properly;
the stated effluent limits are met prior to discharge at Outfall 001 into Roberson Creek (0.75 MGD and 1.249
MGD) and Outfall 002 (1.971 MGD) into the Haw River in the Cape Fear River Basin; and the discharge does
not contravene the designated water quality standards.
If we can be of further assistance, please contact me at 919-791-4200.
cc: Tammy L. Kaufman, PWS Section/NC Division of Water Resources
Raleigh Regional Office
3800 Barrett Drive,1628 Mail Service Center, Raleigh, North Carolina 27699-1628
Phone: [phone] FAX: [phone] lntemet: www.ncwater.org
An Equal Opportunity IAffirmative Action Employer

NCDENR / DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
Town of Pittsboro Wastewater Treatment Plant
NPDES No. NC0020354
Miscellaneous Information.
Facility:
Pittsboro WWTP
Address:
P.O. Box 759, Pittsboro, NC 27312
Permitted Flow:
3.22 MGD
County:
Chatham
Facility Class:
IV
Regional Office:
Raleigh
Facility Status:
Existing
USGS Topo Quad:
E22NW Pittsboro
Permit Status:
Major Mod
Permit Writer:
Teresa Rodriguez
Stream Characteristics
Receiving Stream:
(001): Robeson Creek — 0.75 MGD, 1.249 MGD
(002): Haw River —1.97 MGD
Subbasin:
03-06-04
Summer 7Q10:
(001) 0.03 cfs
(002) 71.8 cfs
Drainage Area:
(001) 10.5 sq. mi.
(002) 1275 mil
Winter 7Q10):
(001) 0.41 cfs
(002) 125.6 cfs
Streams Classifications:
WS-IV, NSW (both)
30Q2:
(001) 0.4 cfs
(002) 159 cfs
303(d) Listed:
(001) Yes
(002) No
Average Flow:
(001) 10 cfs
(002) 1240 cfs
8-Digit HUC:
03030002
IWC:
(001) 100%
(002) 4 %
Summary and Permit History
The Town of Pittsboro operates a 0.75 MGD wastewater treatment plant that discharges into Robeson
Creek; dass WS-IV NSW waters in the Cape Fear River Basin. In June 2011 an expansion was approved
increasing the permitted flow to 3.22 MGD discharging through two outfalls, outfall 001 at 0.75 MGD to
Robeson Creek and outfall 002 at 2.47 MGD to the Haw River. An Environmental Impact Statement (EIS)
was approved by the Department in March 2010 for the expansion to 3.22 MGD. The Town of Pittsboro is
requesting a permit modification to increase the permitted discharge at Robeson Creek to 1.249 MGD while
reducing the Haw River discharge to 1.971 MGD. This modification will maintain the ultimate flow from
both facilities at 3.22 MGD. The Town evaluated anticipated demand and its options and concluded that an
interim expansion of the Robeson Creek outfall is in the best economic interest for the Town. This
modification will not trigger another SEPA review.
Permitting Strategy
The current permit has two effluent outfalls, outfall 001 to Robeson Creek and outfall 002 to the Haw River.
A third outfall, outfall C01, was created in order to apply the nutrient limits that are in effect for the
combination of both outfalls. Nutrient limits were given both individually for each outfall, and collectively.
The Division developed a Total Phosphorus TMDL for Robeson Creek in 2003. The TMDL applies during
the months of April to October. Because the Town of Pittsboro WWTP is the only known point source
discharger into the creek it is the sole point source contributor of phosphorous and is liable for the entire
point source load reduction established to implement the TMDL. The TP TMDL caps the discharge at
outfall 001 (Robeson Creek) at 322 pounds of TP for the summer season (April through October). In

NC0020354
addition, an existing TMDL and the Jordan Lake Rules limit the combined TN input from the facility at
27,514 pounds per year, and TP at 3,731 pounds per year. These figures represent pounds delivered to
Jordan Lake, and must be calculated using a transport factor, which account for stream attenuation prior' to
discharge. TP and TN limits must be calculated to account for loading to the lake, rather than loads
measured at discharge points. Transport Factors are as follows:
Outfall
TN Transport Factor
TP Transport Factor
001 (Robeson Creek)
76%
99%
002 (Haw River)
82%
99%
The nutrient limits will remain unchanged from the current permit.
Proposed changes to permit
1.
An additional effluent page was added to the permit with requirements for the increased flow of
1.249 MGD at Outfall 001. Limits for metals and whole effluent toxicity are not affected by the
increase in flow since they are calculated at 100% IWC because the low flow of the receiving stream.
The monthly average limits for ammonia for the higher flow are 1 mg/1 for summer and 2 mg/1 for
winter and weekly average limits are 2 mg/1 summer and 6 mg/1 winter.
2. Outfall 002: The flow limit for outfall 002 will decrease to 1.97 MGD. By decreasing the flow limit
the instream waste concentration for the WET test decreases from 5.1 % to 4 %.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice:
Final Issue
April 22, 2014
June 16, 2014
State Contact
If you have any questions on any of the above information or on the attached permit, please contact
Teresa Rodriguez at [phone], or at [e-mail].
Signature: Date: VW/
Regional Office Comments
Signature: Date:

TOWN OF
3frew
WILLIAM G. TERRY
Mayor
BRYAN L. GRUESBECK
Town Manager
PAUL S. MESSICK, JR.
Town Attorney
P.O. Box 759 — 635 East Street
PITTSBORO, N.C. 27312
Tom Belnick
Supervisor, NPDES Complex Unit
North Carolina Department of Environment and Natural Resources
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27669-1617
Subject: Major NPDES Permit Modification Permit Application
Date: January 24, 2014
Dear Mr. Belnick,
BOARD OF COMMISSIONERS
PAMELA BALDWIN
JAY FARRELL
MICHAEL A. FIOCCO
BETT WILSON FOLEY
BETH TURNER
TELEPHONE
[phone]
FAX [phone]
The Town of Pittsboro is requesting a Major Modification to our current NPDES Permit NC0020354 for wastewater discharge.
We have considered our near term options to serve the anticipated demand increases and have concluded that an interim
expansion of our Robeson Creek WWTP is both prudent and more affordable.
As you are aware, our request is to increase the Outfall 001 from 0.75 mgd to 1.249 mgd. We would like to transfer 0.499 mgd
from Outfall 002, Haw River. This would result in a reduction to 1.97 mgd at the Haw River. Our total permitted discharge
would remain to be 3.22 mgd.
We realize that this process may take several months, therefore we are moving forward with this request immediately. Our
understanding is that SEPA requirements do not apply to any expansion less than 0.5 mgd.
Our intent is to hire an engineering firm FY '14 to begin the planning process for this expansion. We anticipate that the PER
would be completed within 12 months.
Thank you for your current efforts and assistance with this matter and do not hesitate to contact me or our Town Engineer, Mr.
Fred Royal, PE with any questions or comments related to this application.
Very sincerely yours,
l
Bryan Gruesbeck, Town Manager
Cc: Fred Royal, PE, Town Engineer
John Poteat, Utilities Director
Randy Heard, Plant Superintendent
CHARTERED 1787

Belnick, Tom
From: Fred Royal [[e-mail]]
Sent: Monday, March 17, 2014 3:29 PM
To: Belnick, Tom
Cc: [e-mail]
Subject: Pittsboro Major Mod Cover letter
Attachments: SKMBT_C36414031715310.pdf
Hi Tom,
Attached is our original cover letter. It must have gotten lost in transition to your inbox.
Please let me know as soon as you have assigned this out and what you think the actual schedule might look like moving
forward.
Thanks.
Fred Royal, PE
Town Engineer
Town of Pittsboro, NC
From: [e-mail] Imailto:[e-mail]]
Sent: Monday, March 17, 2014 4:32 PM
To: [e-mail]
Subject: Message from KMBT_C364

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
FORM
2A
NPDES
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
NPDES FORM 2A APPLICATION OVERVIEW
APPLICATION OVERVIEW
Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet
and a "Supplemental Application Information" packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B Additional Application Information for Applicants with a Design Flow >_ 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through B.6.
C. Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (Sills) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). Sills are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
c. Is designated as an SIU by the control authority.
G Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer
Systems).
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 1 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
BASIC APPLICATION INFORMATION •
PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet.
A.1. Facility Information.
Facility Name Town of Pittsboro, NC, NC0020354
Mailing Address P.O. Box 759
Pittsboro, NC 27312
Contact Person Bryan Gruesbeck
Title Town Manager
Telephone Number (910) 5424621
Facility Address 485 Small St. Pittsboro, NC 27312.
(not P.O. Box) End of Small Street
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant Name
Mailing Address
Contact Person
Title
Telephone Number (
Is the applicant the owner or operator (or both) of the treatment works?
® owner ® operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant.
® facility El applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works
(include state -issued permits).
NPDES NC0020354 PSD
UIC
Other W00024838Coniunctive
Other WQ0020019Land
and areas served by the facility. Provide
(combined vs. separate) and its ownership
Type of Collection System
Gravity, Lift Station, FM, Seperate
Reclaimed Water
RCRA
Application
A.4. Collection System Information. Provide information on municipalities
entity and, if known, provide information on the type of collection system
Name Population Served
Town of Pittsboro 4033
the name and population of each
(municipal, private, etc.).
Ownership
Town of Pittsboro
Total population served
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 2 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
A.S. Indian Country. (existing)
a. Is the treatment works located in Indian Country?
❑ Yes ® No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
❑ Yes ® No
A.6. Flow. Indicate the design flow rate of the treatment plant (Le., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12" month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 1.249 mgd (outfall 001 Robeson Creek Proposed)
Two Years Ago
b. Annual average daily flow rate (Table Below)
c. Maximum daily flow rate(Table Below)
Last Year This Year
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each. (existing)
® Separate sanitary sewer 100
❑ Combined storm and sanitary sewer
A.8. Discharges and Other Disposal Methods. (existing)
a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No
If yes, list how many of each of the following types of discharge points the treatment works uses:
i. Discharges of treated effluent 1
ii. Discharges of untreated or partially treated effluent 0
iii. Combined sewer overflow points 0
iv. Constructed emergency overflows (prior to the headworks) 0
v. Other 0 0
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? (existing) ❑ Yes
If yes, provide the following for each surface impoundment:
Location: nfa
® No
Annual average daily volume discharge to surface impoundment(s)
Is discharge
❑ continuous or ❑ intermittent?
0 mgd
c. Does the treatment works land -apply treated wastewater? (existing) ® Yes ® No
If yes, provide the following for each land application site:
Location: Chatham County
Number of acres: 129.00
Annual average daily volume applied to site: .00167 mgd
Is land application 0 continuous or ® intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works(existing)? ❑ Yes ® No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22
Page 3 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
A.5. Indian Country. (new)
c. Is the treatment works located in Indian Country?
❑ Yes ® No
d. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
❑ Yes ® No
A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12th month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 1.971mgd (Outfall 002 Haw River, Proposed)
Two Years Ago
Last Year This Year
b. Annual average daily flow rate 0 0 0
c. Maximum daily flow rate
0
0 0
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each.
® Separate sanitary sewer 100
❑ Combined storm and sanitary sewer
A.8. Discharges and Other Disposal Methods. (new)
a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No
If yes, list how many of each of the following types of discharge points the treatment works uses:
vi. Discharges of treated effluent 1
vii. Discharges of untreated or partially treated effluent 0
viii. Combined sewer overflow points 0
ix. Constructed emergency overflows (prior to the headworks) 0
x. Other
0 0
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S. (new)?
If yes, provide the following for each surface impoundment:
Location: n/a
❑ Yes ® No
Annual average daily volume discharge to surface impoundment(s) (new)
Is discharge
❑ continuous or ❑ intermittent?
c. Does the treatment works land -apply treated wastewater? (new)
If yes, provide the following for each land application site:
Location: n/a
0 mgd
❑ Yes ® No
Number of acres: n/a
Annual average daily volume applied to site:
Is land application ❑ continuous or
n/a mgd
❑ intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works? (new)
❑ Yes ® No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 4 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
•
e.
If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g., tank truck, pipe).
If transport is by a party other than the applicant, provide:
Transporter Name
Mailing Address
Contact Person
Title
Telephone Number ( )
For each treatment works that receives this discharge, provide the
following:
Name
Mailing Address
Contact Person
Title
Telephone Number ( 1
If known, provide the NPDES permit number of the treatment works
Provide the average daily flow rate from the treatment works into
Does the treatment works discharge or dispose of its wastewater
in A.8. through A.8.d above (e.g., underground percolation, well
If yes, provide the following for each disposal method:
that receives this discharge
the receiving facility. mgd
in a manner not included
injection): ❑ Yes 0 No
Description of method (including location and size of site(s) if applicable):
Annual daily volume disposed by this method:
Is disposal through this method 0 continuous or ❑ intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 5 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
WASTEWATER DISCHARGES:
If you answered "Yes" to question A.8.a, complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered "No" to question
A.8.a, go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 001 (EXISTING)
b. Location Robeson Creek WWTP Small Street Extension Pittsboro, NC
(City or town, if applicable)
Chatham
(Zip Code)
North Carolina
(County) (State)
35-42-47.99 N 79-10-13.51 W
(Latitude) (Longitude)
c. Distance from shore (if applicable) 0 ft.
d. Depth below surface (if applicable) n/a ft.
e. Average daily flow rate 1.249 mgd
f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes ® No (go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge: mgd
Months in which discharge occurs:
g. Is outfall equipped with a diffuser? 0 Yes ® No
A.1e. Description of Receiving Waters.
a. Name of receiving water Robeson Creek
b. Name of watershed (if known) Cape Fear
United States Soil Conservation Service 14-digit watershed code (if known):
c. Name of State Management/River Basin (if known):
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
d. Critical low flow of receiving stream (if applicable)
acute 0 cfs chronic 0 cfs
e. Total hardness of receiving stream at critical low flow (if applicable): mg/I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 6 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
WASTEWATER DISCHARGES:
If you answered "Yes" to question A.8.a, complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include information on combined sewer overflows in this section. If you answered "No" to question
A.8.a, go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
c. Outfall number 002 (TO BE BUILT)
d. Location At US Hwy 64 Bridge crossing Haw River on the Western most shore
(City or town, if applicable)
Chatham
(Zip Code)
North Carolina
(County) (State)
35-43-49.49 N 79-06-23.25
(Latitude) (Longitude)
c. Distance from shore (if applicable) -30 ft.
d. Depth below surface (if applicable) n/a ft.
e. Average daily flow rate 1.971 mgd
f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes ® No (go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge: mgd
Months in which discharge occurs:
g. Is outfall equipped with a diffuser? ❑ Yes ® No
A.10. Description of Receiving Waters.
d. Name of receiving water Haw River
e. Name of watershed (if known) Cage Fear
United States Soil Conservation Service 14-digit watershed code (if known):
f. Name of State Management/River Basin (if known):
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
d. Critical low flow of receiving stream (if applicable)
acute 0 cfs chronic 0 cfs
e. Total hardness of receiving stream at critical low flow (if applicable): 30 mg/I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 7 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply
❑ Primary ® Secondary
❑ Advanced ® Other. Describe: tertiary sand filters, UV
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal 85 %
Design SS removal 85
Design P removal Monitor and Report
Design N removal Monitor and Report
Other
c. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
UV
If disinfection is by chlorination is dechlorination used for this outfall?
Does the treatment plant have post aeration?
0 Yes IA No
a Yes ❑ No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QAIQC requirements of
40 CFR Part 136 and other appropriate QAIQC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number: 001
PARAMETER
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
Value
Units
Value
Units
Number of Samples
pH (Minimum)
6.00
s.u.%
pH (Maximum)
8.51
s.u.
Flow Rate
1.4
MGD
0.313
MGD
365 (Daily)
Temperature (Winter)
19.75
Degrees C
14.925
Degrees C
260 (5/week)
Temperature (Summer)
27.45
Degrees C
22.725
Degrees C
260 (5/week)
' For pt I please report a minimum and a maximum daily value
POLLUTANT
MAXIMUM DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
ML/MDL
Conc.
Units
Conc.
Units
Number of
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
DEMAND (Report one)
BOD5
30
Mg/I
2.225
Mg/I
156
(3/week)
SM 5210B
300
CBOD5
FECAL COLIFORM
2900
#/100 ML
4.958
#/100
ML
156
(3/week)
SM 9222 D
TOTAL SUSPENDED SOLIDS (TSS)
49.2
Mg/I
4.05
Mg/I
156
(3/week)
SM 2540 D
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 8 of 22

END OF PART A.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
A.11. Description of Treatment
a What level of treatment are provided? Check all that apply( Future Outfall 002)
❑ Primary ❑ Secondary
❑ Advanced 0 Other. Describe:
d. Indicate the following removal rates (as applicable): (see Speculative Limits)
Design BOD5 removal or Design CBOD5 removal 99 (to achieve spec limits) cya
Design SS removal 90(to achieve spec limits)
Design P removal 97(to achieve spec limits)
Design N removal 89(to achieve spec limits)
Other
e. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
If disinfection is by chlorination is dechlorination used for this outfall? ❑ Yes ❑ No
Does the treatment plant have post aeration? ❑ Yes ❑ No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number:
PARAMETER
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
Value
Units
Value
Units
Number of Samples
pH (Minimum)
s.u._.%�!/,/�!I!/.
pH (Maximum)
s.u.
Flow Rate
Temperature (Winter)MIN
Temperature (Summer)MAX
* For pH please report a minimum and a maximum daily value
POLLUTANT
MAXIMUM DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
MUMDL
Conc.
Units
Conc.
Units
Number of
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
DEMAND (Report one)
BOD5
CBOD5
FECAL COLIFORM
TOTAL SUSPENDED SOLIDS (TSS)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 9 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
BASIC APPLICATION INFORMATION
PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 MGD (100,000 gallons per day).
All applicants with a design flow rate a 0.1 mgd must answer questions B.1 through B.6. All others go to Part C (Certification).
B.1. Inflow and Infiltration. Estimate the average number of gallons per day
147583 gpd (Discussion in Exhibit G-0
that flow into the treatment works from inflow and/or infiltration.
of EIS)
to reduce the storm flow.The repairs and replacements began
Briefly explain any steps underway or planned to minimize inflow and infiltration.
The town of Pittsboro has an extensive ongoing I/1 program
in 2002 and continue today and have paid off in reducing the nonwastewater flows. Stimulus money applications as
well as other grants are consistently applied for in hopes of getting real assistance to finish the job.
B.2. Topographic Map. Attach to this application a topographic map of the
map must show the outline of the facility and the following information.
area.)
a. The area surrounding the treatment plant. including all unit processes.
b. The major pipes or other structures through which wastewater enters
treated wastewater is discharged from the treatment plant. Include
c. Each well where wastewater from the treatment plant is injected underground.(
d. Wells, springs, other surface water bodies, and drinking water wells
works, and 2) listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works
f. If the treatment works receives waste that is classified as hazardous
or special pipe, show on the map where the hazardous waste enters
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the
backup power sources or redunancy in the system. Also provide a water
chlorination and dechlorination). The water balance must show daily average
rates between treatment units. Include a brief narrative description of the
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment
area extending at least one mile beyond facility property boundaries. This
(You may submit more than one map if one map does not show the entire
the treatment works and the pipes or other structures through which
outfalls from bypass piping, if applicable. (See Attached Schematic 1)
N/A)
that are: 1) within 1/4 mile of the property boundaries of the treatment
is stored, treated, or disposed.
under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
the treatment works and where it is treated, stored, and/or disposed.
processes of the treatment plant, including all bypass piping and all
balance showing all treatment units, including disinfection (e.g.,
flow rates at influent and discharge points and approximate daily flow
diagram.
and effluent quality) of the treatment works the responsibility of a
and describe the contractors responsibilities (attach additional
contractor? 0 Yes No
If yes, list the name, address, telephone number, and status of each contractor
pages if necessary).
Name:
Mailing Address:
Telephone Number: ( )
Responsibilities of Contractor:
B.5. Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question 6.5
for each. (If none, go to question B.6.)
a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
001, 002
b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies.
❑ Yes ® No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 11 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
c. If the answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if applicable).
d. Provide dates imposed
applicable. For improvements
applicable. Indicate
Implementation Stage
- Begin Construction
- End Construction
- Begin Discharge
- Attain Operational
e. Have appropriate
Describe briefly:
by any compliance schedule
planned independently
dates as accurately as possible.
Level
permits/clearances concerning other
Record of decision for the project
or any actual dates of completion for the implementation steps listed
of local, State, or Federal agencies, indicate planned or actual completion
Schedule Actual Completion
MM/DD/YYYY MM/DD/YYYY
below, as
dates, as
Yes ❑ No
/ / / 1
/ / / /
/ / / /
/ / / /
Federal/State requirements been obtained? ®
was issued on March 29, 2010
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD
Applicants that discharge to waters of the US must
effluent testing required by the permitting authority
on combine sewer overflows in this section. All information
using 40 CFR Part 136 methods. In addition, this data
QA/QC requirements for standard methods for analytes
based on at least three pollutant scans and must be
Outfall Number: 001
ONLY).
provide effluent testing data for the following parameters. Provide
for each outfall through which effluent is discharged. Do not include
the indicated
information
conducted
other appropriate
data must be
reported must be based on data collected through analysis
must comply with QA/QC requirements of 40 CFR Part 136 and
not addressed by 40 CFR Part 136. At a minimum effluent testing
no more than four and on -half years old.
POLLUTANT
MAXIMUM DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
ML/MDL
Conc.
Units
Conc.
Units
Number of
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
43
mg/I
0.4113
Mg/I
3/week
CHLORINE (TOTAL
RESIDUAL, TRC)
n/a
DISSOLVED OXYGEN
13.94
mgll
8.1889
mgll
Daily
TOTAL KJELDAHL
NITROGEN (TKN)
15
Mg/I
1.849
Mg/I
weekly
NITRATE PLUS NITRITE
NITROGEN
38.8
Mg/I
24.2799
Mg/I
weekly
OIL and GREASE
n/a
PHOSPHORUS (Total)
3.7
mgll
1.2565
mgll
weekly
TOTAL DISSOLVED SOLIDS
(TDS)
n/a
OTHER
END OF PART B.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 12 of 22

FACILITY NAME AND PERMIT NUMBER:
TOWN OF PITTSBORO, NC
PERMIT ACTION REQUESTED:
Major Modification
RIVER BASIN:
Cape Fear
BASIC APPLICATION INFORMATION
PART C. CERTIFICATION
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of this
certification. All applicants must complete all applicable sections of Form 2A, as explained in the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed
Form 2A and have completed all sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
® Basic Application Information packet Supplemental Application Information packet:
❑ Part D (Expanded Effluent Testing Data)
0 Part E (Toxicity Testing: Biomonitoring Data)
❑ Part F (Industrial User Discharges and RCRA/CERCLA Wastes)
❑ Part G (Combined Sewer Systems)
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION.
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who
manage the system or those persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment
for knowing violations. II
Name and official title g(3X)4(1 (9 P-J (... 6-(/K
X
Signature. -
Telephone number Ng) i /) 5-it 2- i f�j L/ x 2 7
Date signed V 2/zA/ l b
Upon request of the permitting authority, you must submit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
RECEIVED/DENR/DWR
APR -72014
Water Resources
Permitting Section
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 13 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
SUPPLEMENTAL APPLICATION INFORMATION
PART D. EXPANDED EFFLUENT TESTING DATA
Refer to the directions on the cover page to determine whether this section applies to the treatment works.
Effluent Testing: 1.0 mgd
to have) a pretreatment program,
pollutants. Provide the indicated
effluent is discharged. Do
and Pretreatment Works. If the treatment works has a design flow greater than or equal to 1.0
or is otherwise required by the permitting authority to provide the data, then provide effluent
effluent testing information and any other information required by the permitting authority
not include information on combined sewer overflows in this section. All information reported must
using 40 CFR Part 136 methods. In addition, these data must comply with CIA/QC requirements
for standard methods for analytes not addressed by 40 CFR Part 136. Indicate in
pollutants not specifically listed in this form. At a minimum, effluent testing data must be based
than four and one-half years old.
<1.0 MGD (Complete once for each outfall discharging effluent to waters of the
mgd or it has (or is required
testing data for the following
for each outfall through which
be based on data collected
of 40 CFR Part 136 and
the blank rows provided below
on at least three pollutant
United States.)
through analyses conducted
other appropriate QA/QC requirements
any data you may have on
scans and must be no more
Outfall number: 001 is currently
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
ML/MDL
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
METHOD
METALS (TOTAL RECOVERABLE), CYANIDE, PHENOLS, AND HARDNESS.
ANTIMONY99999999
ARSENIC
BERYLLIUM
CADMIUM
CHROMIUM
COPPER
LEAD
MERCURY
NICKEL
SELENIUM
SILVER
THALLIUM
ZINC
CYANIDE
TOTAL PHENOLIC
COMPOUNDS
HARDNESS (as CaCO3)
Use this space (or a separate sheet) to provide information on other metals requested by the permit writer
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 14 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Outfall number: (Complete once for each out -fall discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
POLLUTANT
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
METHOD
ML!MDL
VOLATILE ORGANIC COMPOUNDS
ACROLEIN
ACRYLONITRILE
BENZENE
BROMOFORM
CARBON
TETRACHLORIDE
CHLOROBENZENE
CHLORODIBROMO-
METHANE
CHLOROETHANE
2-CHLOROETHYLVINYL
ETHER
CHLOROFORM
DICHLOROBROMO-
METHANE
1,1-DICHLOROETHANE
1,2-DICHLOROETHANE
TRANS-1,2-DICHLORO-
ETHYLENE
1,1-DICHLORO-
ETHYLENE
1,2-DICHLOROPROPANE
1,3-DICHLORO-
PROPYLENE
ETHYLBENZENE
METHYL BROMIDE
METHYL CHLORIDE
METHYLENE CHLORIDE
1,1,2,2-TETRA-
CHLOROETHANE
TETRACHLORO-
ETHYLENE
TOLUENE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 15 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Outfall number: (Complete once for each outfall
discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
POLLUTANT
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
METHOD
ML/MDL
1,1,1-
TRICHLOROETHANE
1,1,2-
TRICHLOROETHANE
TRICHLOROETHYLENE
VINYL CHLORIDE
Use this space (or a separate sheet) to provide information on other volatile organic
compounds requested by the permit writer
ACID -EXTRACTABLE COMPOUNDS
P-CHLORO-M-CRESOL
2-CHLOROPHENOL
2,4-DICHLOROPHENOL
2,4-DIMETHYLPHENOL
4,6-D I N ITRO-O-CRESOL
2,4-DINITROPHENOL
2-NITROPHENOL
4-NITROPHENOL
PENTACHLOROPHENOL
PHENOL
2,4,6-
TRICHLOROPHENOL
Use this space (or a separate
sheet) to
provide information on
other acid
-extractable
compounds requested
by the permit writer
BASE -NEUTRAL COMPOUNDS
ACENAPHTHENE
ACENAPHTHYLENE
ANTHRACENE
BENZIDINE
BENZO(A)ANTHRACENE
BENZO(A)PYRENE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 16 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
OL'fall number: (Complete once for each outfall discharging effluent to waters of the United States.)
POLLUTANT
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
ANALYTICAL
METHOD
ML/MDL
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
3,4 BENZO-
FLUORANTHENE
BENZO(GHI)PERYLENE
BENZO(K)
FLUORANTHENE
BIS (2-CHLOROETHOXY)
METHANE
BIS (2-CHLOROETHYL)-
ETHER
BIS (2-CHLOROISO-
PROPYL) ETHER
BIS (2-ETHYLHEXYL)
PHTHALATE
4-BROMOPHENYL
PHENYL ETHER
BUTYL BENZYL
PHTHALATE
2-CHLORO-
NAPHTHALENE
4-CHLORPHENYL
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-DICHLORO-
BENZIDINE
DIETHYL PHTHALATE
DIMETHYL PHTHALATE
2,4-DINITROTOLUENE
2,6-DINITROTOLUENE
1,2-DIPHENYL-
HYDRAZINE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 17 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Outfall number: (Complete once for each outfall discharging effluent to waters of the United States.)
MAXIMUM DAILY DISCHARGE
AVERAGE DAILY DISCHARGE
POLLUTANT
Conc.
Units
Mass
Units
Conc.
Units
Mass
Units
Number
of
Samples
ANALYTICAL
METHOD
ML/MDL
FLUORANTHENE
FLUORENE
HEXACHLOROBENZENE
HEXACHLORO-
BUTADIENE
HEXACHLOROCYCLO-
PENTADIENE
HEXACHLOROETHANE
INDENO(1,2,3-CD)
PYRENE
ISOPHORONE
NAPHTHALENE
NITROBENZENE
N-NITROSODI-N-
PROPYLAMINE
N-NITROSODI-
METHYLAMINE
N-NITROSODI-
PHENYLAMINE
PHENANTHRENE
PYRENE
1,2,4-
TRICHLOROBENZENE
Use this space (or a separate sheet) to provide information on other base -neutral compounds requested by the permit writer
Use this space (or a separate sheet) to provide information on other pollutants (e.g , pesticides) requested by the permit writer
END OF PART D.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 18 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
SUPPLEMENTAL APPLICATION INFORMATION
PART E. TOXICITY TESTING DATA
POTWs meeting one or more of the following criteria must provide the results of whole effluent toxicity tests for acute or chronic toxicity for each of the
facility's discharge points: 1) POTWs with a design flow rate greater than or equal to 1.0 mgd; 2) POTWs with a pretreatment program (or those that are
required to have one under 40 CFR Part 403); or 3) POTWs required by the permitting authority to submit data for these parameters.
• At a minimum, these results must include quarterly testing for a 12-month period within the past 1 year using multiple species (minimum of two
species), or the results from four tests performed at least annually in the four and one-hatf years prior to the application, provided the results
show no appreciable toxicity, and testing for acute and/or chronic toxicity, depending on the range of receiving water dilution. Do not include
information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC
requirements for standard methods for analytes not addressed by 40 CFR Part 136.
• In addition, submit the results of any other whole effluent toxicity tests from the past four and one-half years. If a whole effluent toxicity test
conducted during the past four and one-half years revealed toxicity, provide any information on the cause of the toxicity or any results of a
toxicity reduction evaluation, if one was conducted.
• If you have already submitted any of the information requested in Part E, you need not submit it again. Rather, provide the information
requested in question E.4 for previously submitted information. If EPA methods were not used, report the reasons for using altemate methods.
If test summaries are available that contain all of the information requested below, they may be submitted in place of Part E.
If no biomonitoring data is required, do not complete Part E. Refer to the Application Overview for directions on which other sections of the form to
complete.
E.1. Required Tests.
Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years.
❑ chronic 0 acute
E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half nears. Allow one
column per test (where each species constitutes a test). Copy this page if more than three tests are being reported.
Test number: Test number. Test number:
a. Test information.
Test Species & test method number
Age at initiation of test
Outfall number
Dates sample collected
Date test started
Duration
b. Give toxicity test methods followed.
Manual title
Edition number and year of publication
Page number(s)
c. Give the sample collection method(s)
used. For multiple grab samples,
indicate the number of grab samples
used.
24-Hour composite
Grab
d. Indicate where the sample was taken in relation to disinfection. (Check all that apply for each.
Before disinfection
After disinfection
After dechlorination
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 19 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Test number: Test number: Test number:
e. Describe the point in the treatment process at which the sample was collected.
Sample was collected:
f. For each test, include whether the test was intended to assess chronic toxicity, acute toxicity, or both
Chronic toxicity
Acute toxicity
g. Provide the type of test performed.
Static
Static -renewal
Flow -through
h. Source of dilution water. If laboratory water, specify type;,€f receiving water, specify source.
Laboratory water
Receiving water
i. Type of dilution water. If salt water, specify "natural" or type of artificial sea salts or brine used.
Fresh water
•
Salt water
j. Give the percentage effluent used for all concentrations in the test series.
k. Parameters measured during the test. (State whether parameter meets test method specifications)
pH
Salinity
Temperature
Ammonia
Dissolved oxygen
I. Test Results.
Acute:
Percent survival in 100%
effluent
LC50
95% C.I.
%
%
Control percent survival
%
%
Other (describe)
-
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 20 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Chronic:
NOEC
%
%
%
IC25
%
%
%
Control percent survival
%
%
0/0
Other (describe)
m. Quality Control/Quality Assurance.
Is reference toxicant data available?
Was reference toxicant test within
acceptable bounds?
What date was reference toxicant test
run (MM/DD/YYYY)?
/ /
/ /
/ /
Other (describe)
E.3. Toxicity Reduction Evaluation.
❑ Yes ❑ No
Is the treatment works involved in a Toxicity Reduction Evaluation?
If yes, describe:
E.4. Summary of Submitted Biomonitoring Test Information. If you have
cause of toxicity, within the past four and one-half years, provide the dates
of the results.
Date submitted: / / (MM/DD/YYYY)
submitted
biomonitoring test information, or information regarding the
the information was submitted to the permitting authority and a summary
Summary of results: (see instructions)
END OF PART E.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 21 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
❑ Yes ® No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CPUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical Sills.
b. Number of CPUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: N/A
Mailing Address:
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s):
Raw material(s):
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits 0 Yes ❑ No
b. Categorical pretreatment standards 0 Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 22 of 22

FACILITY NAME AND PERMIT NUMBER:
,
PERMIT ACTION REQUESTED:
RIVER BASIN:
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes 0 No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes 0 No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck 0 Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) 0 No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if .
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 23 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
SUPPLEMENTAL APPLICATION INFORMATION
PART G. COMBINED SEWER SYSTEMS
If the treatment works has a combined sewer system, complete Part G.
G.1. System Map. Provide a map indicating the following: (may be included with Basic Application Information)
a- All CSO discharge points.
b. Sensitive use areas potentially affected by CSOs (e.g., beaches, drinking water supplies, shellfish beds, sensitive aquatic ecosystems, and
outstanding natural resource waters).
c. Waters that support threatened and endangered species potentially affected by CSOs.
G.2. System Diagram. Provide a diagram, either in the map provided in G.1 or on a separate drawing, of the combined sewer collection system that
includes the following information.
a. Location of major sewer trunk lines, both combined and separate sanitary.
b. Locations of points where separate sanitary sewers feed into the combined sewer system.
c. Locations of in -line and off-line storage structures.
d. Locations of flow -regulating devices.
e. Locations of pump stations.
CSO OUTFALLS:
Complete questions G.3 through G.6 once for each CSO discharge point.
G.3. Description of Outfall.
a. Outfall number
b. Location
(City or town, if applicable) (Zip Code)
(County) (State)
(Latitude) (Longitude)
c. Distance from shore (if applicable) ft.
d. Depth below surface (if applicable) ft.
e. Which of the following were monitored during the last year for this
0 Rainfall ❑ CSO pollutant concentrations
0 CSO flow volume 0 Receiving water quality
f. How many storm events were monitored during the last year?
G.4. CSO Events.
a. Give the number of CSO events in the last year.
events (0 actual or 0 approx.)
CSO?
0 CSO frequency
b. Give the average duration per CSO event.
hours (0 actual or 0 approx.)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 24 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
c. Give the average volume per CSO event.
million gallons (0 actual or ❑ approx.)
d. Give the minimum rainfall that caused a CSO event in the last year
Inches of rainfall
G.5. Description of Receiving Waters.
a. Name of receiving water:
b. Name of watershed/river/stream system:
United State Soil Conservation Service 14-digit watershed code (if known):
c. Name of State Management/River Basin:
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
G.6. CSO Operations.
Describe any known water quality impacts on the receiving water caused by this CSO (e.g., permanent or intermittent beach closings, permanent or
intermittent shell fish bed closings, fish kills, fish advisories, other recreational Toss, or violation of any applicable State water quality standard).
END OF PART G.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 25 of 22

Table 1 Flows for 3 years as reported on DMRsJan 2007 - Dec 2009
3X
rg
n
3x
rg
n
3X
rg
n
Jan-07 Feb-07 Mar-07 Apr-07 May-07 Jun-07 Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 2 years ago
0.891
0.813
1.174
1.197
0.399
0.522
0.439
0.274
0.304
0.700
0.430
0.464
1.197
0.512
0.438
0.499
0.471
0.310
0.285
0.285
0.255
0.255
0.301
0.3618
0.362
0.361
0.379
0.343
0.252
0.325
0.244
0.235
0.217
0.228
0.218
0.217
0.256
0.266
Jan-08 Feb-08 Mar-08 Apr-08 Mav-08 Jun-08
Jul-08 Auq-08 Sep-08 Oct-08 Nov-08 Dec-08 1 year aao
0.480
0.689
0.966
0.834
0.558
0.410
0.567
0.692
0.411
0.472
0.704
0.940
0.966
0.401
0.477
0.535
0.549
0.373
0.288
0.330
0.279
1.376
0.327
0.371
0.470
0.481
0.281
0.335
0.370
0.410
0.300
0.224
0.207
0.206
0.268
0.232
0.288
0.345
The past
Jan-09 Feb-09 Mar-09 Apr-09 May-09 Jun-09 Jul-09 Aug-09 Sep-09 Oct-09 Nov-09 Dec-09 year
1.201
0.516
1.156
0.618
0.492
0.514
0.462
0.416
0.666
0.408
1.512
1.206
1.512
0.454
0.371
0.614
0.400
0.332
0.309
0.304
0.274
0.278
0.282
0.489
0.639
0.396
0.349
0.310
0.384
0.308
0.251
0.235
0.246
0.232
0.199
0.242
0.270
0.378
NPDES FORM 2A Additional Information

P.4hI,o dCrm3SY
4u/3
'Belnick, Tom
From: Fred Royal [[e-mail]]
Sent: Tuesday, October 08, 2013 5:18 PM
To: Belnick, Tom
Cc: 'Randy Heard'
Subject: RE: WWTP in Pittsboro
Tom,
Thank you for your reply. I am having Randy Heard, WWTP Superintendent, re -review the 2010 application form and
determine if, in fact, it has effluent data on it. I could not find any forms with the effluent provided from that date. If you
have a copy in your files, could you please forward it to us? We are otherwise happy to fill out the effluent data, based
on the most recent information. Thanks again.
Fred
From: Belnick, Tom [mailto:[e-mail]
Sent: Tuesday, October 8, 2013 5:00 PM
To: [e-mail]
Subject: RE: WWTP in Pittsboro
Fred- This is an EPA form, and they will be reviewing the modification as well. Based on EPA instructions, it looks like
you can omit Part F (since no Pretreatment program) and Part G (Combined Sewer). You can repeat effluent and toxicity
data from your 2010 application, since it is less than 4.5 years old.
Tom Belnick
Supervisor, NPDES Complex Permitting Unit
NCDWR/Water Quality Programs
919-807-6390
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
From: Fred Royal[mailto:froyalOpittsboronc.gov]
Sent: Thursday, October 03, 2013 11:31 AM
To: Belnick, Tom
Subject: WWTP in Pittsboro
HI Tom,
Attached is the Form 2A that you mentioned as acceptable for a major modification permit application. It is out dated in
certain areas, such as contact info and effluent testing data is not included for example. My thought is to up -date and
include our most recent testing effluent data. Could you please review this and let me know what you would like to see
in this form? Once we have that understood, I will get it completed and put the package together. We are going to seek
a 0.499 MGD discharge increase, to 1.249 as an FYI.
Thanks very much.
Fredric T. Royal, PE, CFM
Town Engineer
Town of Pittsboro, NC 27312
1

NCTDZOSY ithJ
VA) a
-Belnick, Tom
From: Belnick, Tom
Sent: Monday, September 09, 2013 12:26 PM
To: 'Randy Heard'
Subject: RE: Permit Questions
Randy- response to your questions...
(001 Ctlf ei hovi)
iF Jhe� in c/e�i,< P/J 1J
be��al 0-75/M .
• Outfall 001. Going from 0.75 MGD to 1.25 MGD will not change monitoring frequency at 001. Please note that
SEPA requirements kick in if you request 0.5 MGD additional flow at 001, but would not kick in if you request a
smaller increase.
• 24/7 operations kick in at > 5.0 MGD. Your total permitted flow (3.22 MGD) is below this threshold.
• If not classified as a Major facility already (with the total permitted flow = 3.22 MGD), an increase above 1 MGD
at 001 will put you into the Major Permit category. Annual fees for Major facilities are $3,440/year, and permit
actions for Majors are reviewed by EPA.
Tom Belnick
Supervisor, NPDES Complex Permitting Unit
NCDWR/Water Quality Programs
919-807-6390
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
From: Randy Heard [mailto:rheard@ blast.com]
Sent: Friday, September 06, 2013 7:46 AM
To: Belnick, Tom
Subject: Permit Questions
Hi Tom,
I have a couple of questions regarding our request for the additional .SMGD permitted flow. Will our sampling
frequencies increase? Also, is there a flow at which the facility will have to be staffed 24hrs per day? Any other things I
need to be aware of by increasing > 1.0 MGD.
Thank You,
Randy
Randy Heard
Wastewater Plant Superintendent
Town of Pittsboro
919-542-2444 (office)
919-542-2468 (fax)
1

gyiviithig :NCF9W;Sy 9 2643
Belnick, Tom
From: Belnick, Tom
Sent: Wednesday, September 04, 2013 10:39 AM
To: 'froyal©pittsboronc.gov'; 'Bryan Gruesbeck'; 'Randy Heard'
Cc: Colson, Kim; Roddy, Jackie; Headrick, Hannah; Reeder, Tom; Smith, Danny
Subject: Pittsboro/NPDES NC0020354
To: Fred Royal, PE
Town Engineer/Town of Pittsboro
Fred- I mentioned at the Pittsboro/NC DWR meeting on 8/29/2013 that I would get back to you with some information
on your wastewater situation. Hope the following helps. Feel free to contact me with any questions.
1. Wastewater Issue. Pittsboro is currently permitted to discharge a total of 3.22 MGD, with 0.75 MGD to Outfall
001 (Robeson Creek) and a future discharge of 2.47 MGD to Outfall 002 (Haw River). Given the high cost to
construct a new line to the Haw River, Pittsboro is seeking an interim expansion to Outfall 001 (Robeson Creek)
at this time, while maintaining a total permitted flow of 3.22 MGD. The amount of additional flow requested for
Outfall 001 will be determined based upon the level of total phosphorus (TP) treatment required to comply with
the Robeson Creek TP TMDL.
2. NPDES Permitting Steps for Major Modification. Pittsboro will need to apply for a Major Modification to its
NPDES permit, which does not expire until 4/30/2016. You should include a Cover letter, EPA Form 2A (you can
resubmit your 2010 application if data are no more than 4.5 years old), and a check made out to NC DENR for
$1,030. Please include three (3) copies of the EPA application form. The EPA application form is available at the
following Zink: http://portal.ncdenr.org/web/wq/swp/ps/npdes/permitapps. After receipt of your application, a
draft permit modification will be developed and sent to public notice for a 30 day comment period, including
EPA review. Since Pittsboro recently completed a 20-year flow justification and alternatives analysis for the Haw
River expansion, an Engineering Alternatives Analysis (EAA) will not be necessary. You indicated that Pittsboro is
considering an increase in permitted flow at Outfall 001 from 0.75 MGD to 1.25 MGD, while maintaining a total
permitted flow of 3.22 MGD. Please note that an increase of > 500,000 gallons per day at Outfall 001 might
trigger SEPA requirements (see Item 3 below).
3. SEPA Input. A SEPA EIS , Record of Decision, for the Outfall 002 expansion (Haw River) was issued on
3/19/2010. SEPA requirements do not apply to any expansion of an existing discharge facility of less than
500,000 gallons per day additional flow. A supplemental EIS might be required for the proposed permit
modification to reflect the changes from the initial SEPA action. SEPA questions should be directed to our DWR
SEPA coordinator Jackie Roddy at 919-791-4298.
4. Project Funding. You indicated that Pittsboro might seek State funding for this wastewater project. Please note
that our funding section, Infrastructure Finance Section (IFS), has been reorganized into a new DENR Division of
Water Infrastructure (DWI). Please contact Kim Colson with NC DWI at 919-707-9177 with any questions
pertaining to wastewater infrastructure funding.
5. ATC Permitting. Please note that the Authorization to Construct (ATC) permitting function has recently been
moved from IFS to the NPDES Complex Permitting Unit. Feel free to contact me with any questions. After the
NPDES permit modification is completed, you will need to apply for an ATC permit for the WWTP upgrade.
Additional information on the ATC application process can be found on our website at the following Zink:
http://portal.ncdenr.org/web/wq/ifs/permit/atc.
6. Jordan Lake Total Nitrogen Compliance Changes. As I mentioned last week, the total nitrogen (TN) compliance
date for complying with Jordan Lake total nitrogen annual mass limits has been pushed back. Your current
permit indicates that TN annual load limits become effective 1/1/2016. HB119 changed the compliance date to
CY 2018 (if an ATC is obtained by 12/31/2016), and the more recent SB 515 extends the compliance date for
another three years to CY 2021 (if an ATC is obtained by 12/31/2019). These TN compliance dates will be
updated with your pending permit modification.
1

Tom Belnick
Supervisor, NPDES Complex Permitting Unit
NCDWR/Water Quality Programs
919-807-6390
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
2

sEe4 -INinQet!)n CVt'Jd?pI,
Minimum Criteria Under the NC Environmental Policy Act
9Po I 3
Projects or activities subject to SEPA require all three of the following conditions to be met:
1.. An action by a state agency (issuing permits);
2. An expenditure of public money or private use of public land; and
3. A potential detrimental environmental effect upon natural resources, public health and safety, natural
beauty, or historical or cultural elements of the State's common heritage. [NC General Statute 113A,
sections 1 to 13].
Projects permitted by DWQ typically requiring preparation of an environmental document (EA or EIS) are
wastewater treatment plant expansions, perennial stream impact projects, and sewer line extensions.
New reclaimed water utilization distribution lines are exempt from SEPA review.
In general, construction or expansion activities exceeding the minimum thresholds established below require an
environmental document and a full inter -agency review. Note that the list below is not all inclusive of every
project. 15A NCAC O 1 C should be comprehensively reviewed to determine a particular project's applicability
to SEPA:
•Relocation of discharge points within the same river basin
•New discharge facilities with a proposed permitted expansion of less than 500,000 gallons per day and
producing an instream waste concentration of less than 33 percent during the 7-day 10-year low flow
conditions
•Expansion of an existing discharge facility of less than 500,000 gallons per day additional flow
•New surface irrigation, high rate infiltration, or subsurface wastewater systems with a proposed permitted
capacity not exceeding 100,000 gallons per day
•Reclaimed water utilization systems with reclaimed water utilization being the sole disposal option with a
proposed permitted capacity not exceeding 200,000 gallons per day
•New reclaimed water utilization sites with a proposed permitted capacity not to exceed 500,000 gallons per
day when the reclaimed water utilization system is required for compliance with any other wastewater
disposal permit
•New reclaimed water utilization sites with a proposed permitted capacity not to exceed 1,000,000 gallons
per day when the reclaimed water utilization system is not required for compliance with any other
wastewater disposal permit
•New permits or modification to existing permits for land application of residuals utilization, where less than
10 acres not previously permitted is prior converted within three years or will be converted from a non -
plantation forested area to application area
•New or expanding surface disposal sites disposing less than 3000 dry tons of residuals per year
•Gravity sewer extensions with three or more miles of 18" or greater diameter sewer line
•New or expanding individual pump stations and associated force mains with a proposed permitted capacity
of less than 1750 gallons per minute.
If you are unsure if a proposed project exceeds the minimum thresholds...
Please contact DWQ's SEPA Coordinator, Hannah Headrick ([phone]).

Ambient Monitoring System Station Summaries
NCDENR, Division of Water Quality
Basinwide Assessment Report
Location: ROBESON CRK AT BOAT ACCESS OFF SR 1943 NR HANKS CHAPEL
Station #: B2450000 Hydrologic Unit Code: 03030002
Latitude: 35.70315 Longitude: -79.10027 Stream class: WS-IV B NSW CA
Agency: NCAMBNT NC stream index: 16-(37.5)
Time period: 01/28/2004 to 12/01/2008
# # Results not meeting EL
Percentiles
results ND EL # % %Conf Min loth 25th 50th 75th 90th Max
Field
D.O. (mg/L) 50 0 <4 1 2 3.7 7.4 8.6 10.2 11.6 1I 14.6
50 0 <5 2 4 3.7 7.4 8.6 10.2 11.6 13 14.6
pH (SU) 54 0 <6 0 0 6.4 6.6 6.8 7.2 8.2 9.2 9.4
54 0 >9 6 11.1 70.7 6,4 6.6 6.8 7.2 8.2 9.2 9.4
Salinity (ppt) 21 0 N/A 0 0 0.1 0.1 0.1 0.1 0.1
Spec. conductance 53 0 N/A 82 97 124 155 226 299 385
(umhos/cm at 25°C)
Water Temperature (°C) 54 0 >32 0 0 1 7.6 11.8 21.6 27.8 29.5 31.1
Other
Chlorophyll a (ug/L) 49 1 >40 19 38.8 100 1 3 10 31 51 61 77
TSS (mg/L) 20 3 N/A 5.5 6.2 7.6 10.2 14 18.8 20
Turbidity (NTU) 54 0 >25 4 7.4 1.9 6 8.4 10 16.2 23 45
Nutrients (mg/L)
NI-13 as N 54 25 N/A 0.02 0.02 0.02 0.02 0.04 0.09 0.2
NO2 + NO3 as N 54 4 >10 0 0 0.02 0.02 0.18 0.41 0.66 0.86 1.3
TKN as N 54 1 N/A 0.2 0.48 0.66 0.84 1 1.15 1.5
Total Phosphorus 54 0 N/A 0.02 0.06 0.08 0.1 0.11 0.15 0.32
Metals (ug/L)
Aluminum, total (Al) 13 0 N/A 170 174 225 260 400 1680 1800
Arsenic, total (As) 13 12 >10 0 0 5 5 5 5 5 10 10
Cadmium, total (Cd) 13 13 >2 0 0 1 1.4 2 2 2 2 2
Chromium, total (Cr) 13 13 >50 0 0 10 16 25 25 25 25 25
Copper, total (Cu) 13 4 >7 0 0 2 2 2 2 3 3 3
Iron, total (Fe) 13 0 >1000 2 15.4 86.6 310 322 425 700 795 1720 1800
Lead, total (Pb) 13 13 >25 0 0 10 10 10 10 10 10 10
Manganese, total (Mn) 13 0 >200 0 0 37 38 69 89 130 176 180
Mercury, total (Hg) 12 12 >0.012 0 0 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Nickel, total (Ni) 13 13 >25 0 0 10 10 10 10 10 10 10
Zinc, total (Zn) 13 12 >50 0 0 10 10 10 10 10 16 20
Fecal Coliform Screening(#/100mL)
# results: Geomean # > 400: %> 400: %Conf:
54 10 4 7
Key:
# result: number of observations
# ND: number of observations reported to be below detection level (non -detect)
EL: Evaluation Level; applicable numeric or narrative water quality standard or action level
Results not meeting EL: number and percentages of observations not meeting evaluation level
%Conf : States the percent statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Coliform)
Stations with less than 10 results for a given parameter were not evaluated for statistical confidence
NCDENR, Division of Water Quality
Ambient Monitoring System Report
Cape Fear River Basin - August 2009
AMS-83

v w vas-tiE�-1
Ambient Monitoring System Station Summaries
NCDENR, Division of Water Quality
Basinwide Assessment Report
Location: ROBESON CRK AT BOAT ACCESS OFF SR 1943 NR HANKS CHAPEL
Station #: B2450000 Hydrologic Unit Code: 03030002
Latitude: 35.70315 Longitude: -79.10027 Stream class: WS-IV B NSW CA
Agency: UCFRBA NC stream index: 16-(37.5)
Time period: 01/30/2004 to 12/15/2008
# # Results not meeting EL Percentiles
results ND EL # % %Conf Min loth 25th 50th 75th 90th Max
Field
D.O. (mg/L) 85. 0 <4 0 0 5.6 7.6 8.7 10.2 11.7 12.7 16.8
85 0 <5 0 0 5.6 7.6 8.7 10.2 11.7 12.7 16.8
pH (SU) 85 0 <6 0 0 6.6 7 7.2 7.9 8.9 9.2 9.7
85 0 >9 18 21.2 99.9 6.6 7 7.2 7.9 8.9 9.2 9.7
Spec.conductance 84 2 N/A 74 101 152 192 242 299 419
(umhos/cm at 25°C)
Water Temperature (°C) 85 0 >32 4 4.7 2 7.7 13.4 24.8 28.8 30.8 34
Other
TSS (mg/L) 60 3 N/A 1 4 6.2 10 13 16.9 49
Turbidity (NT[J) 60 0 >25 10 16.7 96.6 3.6 5.9 73 10 17.4 33.2 116
Nutrients (mg/L)
NH3 as N 60 34 N/A 0.01 0.02 0.02 0.02 0.05 0.15 0.28
NO2 + NO3 as N 60 3 >10 0 0 0.02 0.06 0.19 0.38 0.61 0.91 1.7
TKN as N 60 1 N/A 0.1 0.4 0.55 0.81 1 1.43 2
Total Phosphorus 60 3 N/A 0.01 0.04 0.06 0.08 0.11 0.15 1
Fecal Coliform Screening(#/100mL)
# results: Geomean # > 400: % > 400: %Conf:
60 20 6 10
# result number of observations
# ND: number of observations reported to be below detection level (non -detect)
EL: Evaluation Level; applicable numeric or narrative water quality standard or action level
Results not meeting EL number and percentages of observations not meeting evaluation level
%Conf : States the percent statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Conform)
Stations with less than 10 results for a given parameter were not evaluated for statistical confidence
NCDENR, Division of Water Quality
Ambient Monitoring System Report
Cape Fear River Basin - August 2009
AMS-84

56P4 Q'i/14ro
Belnick, Tom
From:
Sent:
To:
Subject:
Belnick, Tom
Wednesday, August 21, 2013 10:28 AM
Headrick, Hannah
SEPA/Pittsboro
SEPA Question for Pittsboro/NPDES.
1. WWTP currently discharges to Robeson Creek, via Outfall 001, permitted for 0.75 MGD.
2. Following SEPA/Permit Mod, WWTP received expanded flow sheet of 2.47 MGD, Outfall 002, with discharge to
Haw River. Has not been built yet.
3. Total permitted flow = 0.75 + 2.47 MGD = 3.22 MGD.
4. Pittsboro wants to hold off on construction of Outfall 002 (expensive) for the near -future, and expand existing
Outfall 001. They mentioned 1.25 MGD, which would represent an increase of 0.5 MGD to Outfall 001.
5. Question- would this trigger SEPA requirements? I'm not clear on whether criteria is >0.5 MGD increase. Also,
not clear on SEPA exemption for outfall relocation within same basin. If they are proposing to shift some
permitted flow from 002 to 001 (same basin, maintain same total permitted flow), does this negate SEPA?
6. Thanks for any clarification on SEPA requirements. There is a tentative meeting with Reeder at Pittsboro next
week.
Tom Belnick
Supervisor, NPDES Complex Permitting Unit
NCDWR/Water Quality Programs
919-807-6390
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
1

ENR-ENVIRONMENTAL MANAGEMENT COMMISSION 715A: 01 C . 0100-. 0500
(2)
(c) Channel disturbance and land disturbing activities associated with non -compensatory stream
restoration or stream enhancement.
(d) Land disturbing activities impacting wetlands if the activity will result in the loss of one acre or
less of Class WL wetlands.
(e) Land disturbing activities impacting streams if the activity will result in channel disturbance of
less than 500 linear feet of perennial streams. Land disturbing activities that impact 500 linear feet
or more of perennial streams do not require preparation of an environmental document if stream
restoration or stream enhancement is performed.
Specific Criteria. Construction or expansion activities listed below require an environmental document
if they exceed either the minimum criteria set out in Item (1) of this Rule or the thresholds established
below.
(a) The following activities related to wastewater treatment systems.
(i) Relocation of discharge points within the same river basin;
(ii) New discharge facilities with a proposed permitted expansion of less than 500,000
gallons per day and producing an instream waste concentration of less than 33 percent
during the 7-day 10-year low flow conditions;
(iii) Expansion of an existing discharge facility of less than 500,000 gallons per day
additional flow;
(iv) New surface irrigation, high rate infiltration, or subsurface waste water systems with a
proposed permitted capacity not exceeding 100,000 gallons per day;
(v) Reclaimed water utilization systems with reclaimed water utilization being the sole
disposal option with a proposed permitted capacity not exceeding 200,000 gallons per
day;
(vi) New reclaimed water utilization sites with a proposed permitted capacity not to exceed
500,000 gallons per day when the reclaimed water utilization system is required for
compliance with any other wastewater disposal permit;
(vii) New reclaimed water utilization sites with a proposed permitted capacity not to exceed
1,000,000 gallons per day when the reclaimed water utilization system is not required
for compliance with any other wastewater disposal permit;
(viii) New reclaimed water utilization distribution lines;
(ix) New permits or modification to existing permits for land application of residuals
utilization, where less than 10 acres not previously permitted is prior converted within
three years or will be converted from a non -plantation forested area to application area;
(x) New or expanding surface disposal sites disposing less than 3000 dry tons of residuals
per year;
(xi) Gravity,sewer extensions with less than three miles of new lines or lines of less than 18
inches in diameter; and
(xii) New or expanding individual pump stations and associated force mains with a proposed
permitted capacity of less than 1750 gallons per minute.
(b) The following activities related to potable water systems.
(i) Improvements to water treatment plants that involve less than 1,000,000 gallons per day
added capacity and total design withdrawal less than one -fifth of the 7-day, 10-year low
flow of the contributing stream;
(ii) Improvements not intended to add capacity to the facility;
(iii) Installation of appurtenances in existing rights -of -way for streets or utilities, or water
lines and appurtenances less than five miles in length and having only directional bore
stream crossings or no stream crossings; and
(iv) Construction of water tanks, or booster pumping or secondary or remote disinfection
stations.
(c) Groundwater withdrawals of less than 1,000,000 gallons per day where such withdrawals are not
expected to cause alterations in established land use patterns, or degradation of groundwater or
surface water quality.
(d) The following activities related to solid waste disposal:
NORTH CAROLINA ADMINISTRATIVE CODE Effective April 1, 2003 Page 9 of 13

P1qMr(f'Ie nlcoo Zo3sY -see Ralf 1.4_ brie fr
ATA 1! dist.tapcivt
0•11,-- F1bENR
oleo!) North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
December 20, 2012
Mayor Randolph Voller
Town of Pittsboro
PO Box 759
635 East Street
Pittsboro, NC 27312
Dear Mayor Voller,
It was a pleasure speaking with you earlier today about Pittsboro's request to modify the duel -
discharge requirement in the Town's current NPDES wastewater discharge permit. The
Division of Water Quality is certainly open to reviewing alternatives with you and, as we agreed,
a meeting in January is probably the best way to begin some initial discussion of the water
quality issues and identify a path forward.
We will contact Mr. Gruesbeck for some possible meeting dates and plan to meet here at the
Archdale Building in Raleigh. We look forward to working with you and the Town along with
other interested parties to find the best solution possible.
2174
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coo . ,!) e x nr(71 . 4.0 fzetwo r t1f44
Please call me if you have questions or wish to discuss this further.
Sincerely,
4/1/Chuck Wakild
Cc: Bryan Gruesbeck, Pittsboro Town Manager
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location, 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet: www.ncwateraualitv.orq
An Equal Opportunity 1 Affirmative Action Employer
NorthCarolina
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Belnick, Tom TN COM he l oethe-
€ dc-101,461 Iv
From: Templeton, Mike
Sent: Monday, December 03, 2012 5:2
v 1
To: Vinzani, Gil; [e-mail] Royal, Fred v
Cc: Belnick, Tom
Subject: RE: Permit Question
Gil, Randy, and Fred —
In hindsight, the table in Condition A.(3.) is not as clear as it should be — I'll take 'credit' for that. It was intended to say
that the Town will Monitor and Report for the full permit term and the TN limit will be effective beginning with CY2016.
(The TP limit is already in effect, so the 'Monitor and Report' language there should have been removed, as shown.) It
should read as follows:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location
Flow
3.22 MGD
See Conditions A.(1.) and A.(2.)
Combined 001 & 002
TP Delivered Load 2
3,731 I b/yr
Annually
Calculated
Combined 001 & 002
TN Delivered Load 2
Monitor and Report
27,514 lb/yr (effective 1/1/2016)
Annually
Calculated
Combined 001 & 002
Annually
Effluent Pollutant Scan
See Condition A. ( 8. )
y Annuall
Grab or
Composite
Effluent
Session Law 2011-394 (HB119) extends the effective date of a discharger's TN limit to CY2018 if the discharger obtains
an ATC by 12/31/2016 for the nutrient improvements necessary to meet its limit. Follow the link and see Section 14
(bottom of p. 14) for the exact language. (DWQ was not involved in crafting this language, as far as I know, so I can't
explain why it's written just that way.)
We have included the bill's language in other Jordan permits that were renewed since the bill took effect (1/1/2011).
Pittsboro's was issued (or at least in process) by that time, so it doesn't have the new language. Still, law trumps our
permit, so the provisions of the session law apply to Pittsboro. The 2018 option *is* available to the Town, regardless of
what its permit says (or doesn't say).
Gil - It shouldn't be necessary to re -open the permit just to add the session law language. We might want to clarify the
table; I think that would qualify as a technical correction and not require another public notice. Let's talk about that.
All - Let me know if you have any other questions on this.
- Mike T
Michael E. Templeton, P.E.
Point Source Branch/ NPDES
Surface Water Protection Section
NCDENR • DWQ Raleigh, NC
Tel: [phone]
Fax: [phone] (revised)
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.
From: Vinzani, Gil
Sent: Monday, December 03, 2012 2:45 PM
1

To: Templeton, Mike
Subject: FW: Permit Question
Mike:
Please see below. Have you heard anything about a two-year extension??
Gil
From: Randy Heard [mailto:rheardtablast.com]
Sent: Monday, December 03, 2012 2:33 PM
To: Vinzani, Gil
Cc: Royal, Fred
Subject: Permit Question
Dear Mr. Vinzani
I have a couple of questions pertaining to our NPDES Permit #0020354, for the Town of Pittsboro. On page 6,
A.(3), COMBINED LIIVIITATIONS, in the table below for TN Delivered Load, it states monitor and report 27,514
lbs./year (effective 1/1/2016). Could you clarify and comfirm that this is the date our TN load will be enforced for
compliance? Also, I have heard that with an ATC in hand, this date could be extended for two years?
I appreciate your help.
Thank You,
Randy
•
Randy Head
Wastewater Plant Superintendent
Town of Pittsboro
919-548-0222
2
A

. C?111[(,t1ijvm - Off)�AL jot
"Belnick, Tom
Om_
From: Royal, Fred [[e-mail]]
,Sent: ` Thursday, November 08, 2012 9:50 AM
To: Tem Teton, Mike
Cc: queda, TomTn p4�iick, Tom
Subject: RE: 7Q10 flow dat
Aflit,%/c/Abori4A Crftg-
Thanks Mike,
We really appreciate the information and will get back with you if we have follow-up questions.
Fred
From: Templeton, Mike [mailto:[e-mail]]
Sent: Wednesday, November 07, 2012 6:09 PM
To: Royal, Fred
Cc: Esqueda, Tommy; Belnick, Tom
Subject: RE: 7Q10 flow data
Hi, Fred —
Here is some additional information regarding stre s flows and 'zero flow' at Pittsboro in response to your note.:
The 'zero flow' provisions are found in the 02B . 06 rule. Sub -item (d)(2) prohibits new or expanded discharges of
oxygen -consuming wastes to zero -flow streams.
The basic aim of the 'zero flow' requirement is to ensure that a receiving stream has a positive flow in order to limit the
discharger's impact and protect aquatic life. The 0.05 cfs criteria (both 7010 and 3002 flows must be greater than 0.05
cfs) was developed in the late 1980s (or earlier) in coordination with the USGS. At the time, we were pushing permittees
that already discharged to zero -flow streams to remove their discharges. The threshold withstood whatever challenges
resulted, even in the face of those costs.
The USGS determines the streams flows we use for permitting purposes. We get flow values from their 'Low -Flow
Characteristics Reports' or, lacking those, from site -specific estimates that they prepare upon request. In 2008,
Pittsboro's consultants asked Curtis Weaver of the USGS Raleigh office to review previous flow estimates for Robeson
Creek at the WWTP outfall. I've included a copy of his report in its entirety, below. Mr. Weaver verified that the 0.03 cfs
7Q10 estimate was reasonable and describes in detail how he arrived at that conclusion.
Let me know if I overlooked any points or if you have other questions.
- Mike T
Michael E. Templeton, P.E.
Point Source Branch/ NPDES
Surface Water Protection Section
NCDENR • DWQ Raleigh, NC
Tel: [phone]
Fax: [phone] (revised)
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and maybe disclosed to third parties.
Low flow characteristics for Roberson Creek near Pittsboro...Re: Pittsboro
1

All,
A quick check of the low -flow files here at the USGS North Carolina Water Science Center indicates that low -flow
characteristics for your point of interest on Roberson Creek at SCL RR near Pittsboro (station id 02097069, drainage
area 10.5 sqmi) were updated in October 1999 in response to a consulting engineering firm. This site has the
previous 7Q10 and 30Q2 flow estimates at zero and 0.6 cfs, respectively, that was mentioned in the previous email.
Therefore, I'm presuming this is same location as your specific point of interest on Roberson Creek. No known
USGS records of discharge are known to exist at this specific site, but there are other nearby locations on Roberson
Creek where records of miscellaneous measurements have been collected.
Where no or insufficient data exists to allow a site -specific low -flow analysis for a point of interest, the low -flow
characteristics are determined by assessing a range of low -flow yields (expressed as flow per sqmi drainage area, or
cfsm) at nearby locations where estimates have previously been determined.
The most recent low -flow information published for streams in Chatham County is in a basinwide low -flow report
completed in 2001. It is USGS Water -Resources Investigations Report 01-4094, "Low -flow characteristics and
discharge profiles for selected streams in the Cape Fear River Basin, North Carolina, through 1998 " (Weaver and
Pope, 2001). An online version of the report is available through http:llnc.water.usas.gov/reports/wri014094/. The
report provides the low -flow characteristics (based on data through 1998) for continuous -record gaging stations and
partial -record sites within the Cape Fear basin. The report also provides low -flow discharge profiles (7Q10, 30Q2,
winter 7Q10, and 7Q2) for the Cape Fear River and selected tributaries within the basin.
Several points for consideration...
(1) As for the updated estimates determined in 1999, the 7Q10 was estimated at 0.03 cfs (below the "positive flow"
threshold used by NC DWQ) and the 30Q2 was estimated at 0.40 cfs. The updated estimates were based on
average of low -flow yields at three continuous -record gaging stations in vicinity of Pittsboro.
Sta. 02097069 Roberson Creek at SCL RR near Pittsboro
Drainage area 10.5 sqmi
7Q10 = 0.03 cfs (equivalent to 0.0032 cfs)
30Q2 = 0.40 cfs (equivalent to 0.0393 cfs)
winter 7Q10 = 0.41 cfs (equivalent to 0.0401 cfs)
7Q2 = 0.19 cfs (equivalent to 0.0188 cfs)
(2) In Table 8 of the above -reference Cape Fear report, there is one downstream site on Roberson Creek where
sufficient records exist to allow for the determination of low -flow characteristics: Roberson Creek near Seaforth
(station id 02097189, drainage area 27.2 sqmi, at Secondary Road 1939) with records of 21 miscellaneous
measurements obtained during the 1954-81 period.
Expressing these estimates as low -flow yields (again, flow per square mile of drainage area, or cfsm) provides some
indication of the yield that could potentially be applicable to your location. The 7Q10 low -flow yield at this site is
0.0007 cfsm and the 30Q2 low -flow yield is 0.0404 cfsm. Similarly, the winter 7Q10 and 7Q2 low -flow yields at this
site are both 0.0184 cfsm. Applying these 7Q10 and 30Q2 yield values to the drainage area at your specific point of
interest results in 7Q10 and 30Q2 flow estimates at zero flow and 0.42 cfs, respectively.
(3) As for the average annual flow, yields for this statistic at the nearby sites are_1..0 cfsm. Applying this yield to the
drainage area (10.5 sqmi) results in average annual flow estimate between 10 and 11 cfs.
(4) As you consider the above information, please be aware of the following note. The above data are based on
periods of record ending in the 1996 water year, well in advance of the drought conditions that have occurred since
publication of the report. In some North Carolina basins, the low -flow conditions observed during the 1998-2002 and
current (2007-08) droughts have resulted in lower low -flow statistics. No formal statewide investigation has been
completed to document the changes in low -flow statistics since the drought. However, where updated analyses have
been completed for selected stations, the changes in pre -drought versus updated 7Q10 discharges have shown
varying percentage changes of decline.
Putting together the above pieces of information...
2

It appears appropriate to continue using the estimates provided in response to the 1999 request for your point of
interest (station id 02107069). The 7Q2 and 30Q2 low -flow yields used in the 1999 estimates and those for the
downstream site (02107189) included in the Cape Fear low -flow report can be considered fairly comparable.
However, the 7Q10 and winter 7Q10 low -flow yields at downstream site are much lower than those used in the
updated 1999 estimates. This is an issue that would require further assessment, but the 7Q10 estimate at your point
of interest is less than 0.05 cfs and should probably be considered zero flow.
Hope this information is helpful.
Thank you.
Curtis Weaver
**********************************************************************
J. Curtis Weaver, Hydrologist, PE
USGS North Carolina Water Science Center
3916 Sunset Ridge Road
Raleigh, NC 27607
Telephone: [phone] // Fax: [phone]
E-mail address -- jcweaverusgs.gov
Internet address -- http://nc.water.usgs.gov/
***********************************************************************
From: Royal, Fred [mailto:FRoyalftBrwnCald.com]
Sent: Friday, November 02, 2012 3:15 PM
To: Templeton, Mike
Cc: Esqueda, Tommy
Subject: 7Q10 flow data
Hello Mike,
visited your office several months ago with Ken Bruce to discuss Robeson Creek in Pittsboro. You provided some
information related to 7Q10 flows. My notes have it at 0.03 cfs. I am interested in that data, how it was derived and in
the DENR rules describing "zero flow" designated streams, etc. If you can provide links, citations, or actual language, I
would greatly appreciate it.
Fredric Royal, PE, CFM
Managing Engineer
Brown and Caldwell
[e-mail]
T 919.424.1453 I C 919 628.2782
Brown
Caldwell
3

- SECTION 1.(a) For purposes of this act, the following definitions apply:
ei (1) "Jordan Lake Rules" means all of the following rules:
a. 15A NCAC 02B .0262 (Jordan Water Supply Nutrient Strategy:
Purpose and Scope)
b. 15A NCAC 02B .0263 (Jordan Water Supply Nutrient Strategy:
Definitions)
c. 15A NCAC 02B .0264 (Jordan Water Supply Nutrient Strategy:
Agriculture)
d. 15A NCAC 02B .0265 (Jordan Water Supply Nutrient Strategy:
Stormwater Management for New Development)
e. 15A NCAC 02B .0266 (Jordan Water Supply Nutrient Strategy:
Stormwater Management for Existing Development)
f. 15A NCAC 02B .0267 (Jordan Water Supply Nutrient Strategy:
Protection of Existing Riparian Buffers)
g. 15A NCAC 02B .0270 (Jordan Water Supply Nutrient Strategy:
Wastewater Discharge Requirements)
h. 15A NCAC 02B .0271 (Jordan Water Supply Nutrient Strategy:
Stormwater Requirements for State and Federal Entities)
i. 15A NCAC 02B .0272 (Jordan Water Supply Nutrient Strategy:
Fertilizer Management)
j. 15A NCAC 02B .0311 (Cape Fear River Basin)
(2) "Jordan Lake Session Laws" means all of the following Session Laws or
portions of Session Laws:
a. S.L. 2009-216.
b. Part II of S.L. 2009-484.
c. Section 14 of S.L. 2011-394.
d. Section 12.1 of S.L. 2012-187.
e. Subsections 9(c) through 9(g) of S.L. 2012-200.
f. Subsections 11(a) through 11(e) of S.L. 2012-201.
SECTION 1.(b) The implementation dates of the Jordan Lake Rules and Jordan
Lake Session Laws that begin July 1, 2013, or later shall be delayed for a period of three years.
PART II. IMPLEMENTATION OF RULE FOR PROTECTION OF EXISTING
BUFFERS
SECTION 2.(a) The definitions set out in G.S. 143-212 and 15A NCAC 02B .0267
(Jordan Water Supply Nutrient Strategy: Protection of Existing Riparian Buffers) apply to this
section. For purposes of this section, "Protection of Existing Riparian Buffers Rule" means 15A
NCAC 02B .0267 (Jordan Water Supply Nutrient Strategy: Protection of Existing Riparian
Buffers).
SECTION 2.(b) Protection of Existing Riparian Buffers Rule. - Until the effective
date of the revised permanent rule that the Commission is required to adopt pursuant to Section
2(d) of this act, the Commission and the Department shall implement the Protection of Existing
Riparian Buffers Rule as provided in Section 2(c) of this act.
SECTION 2.(c) Implementation. - The Protection of Existing Riparian Buffers
Rule shall be implemented as follows:
(1) Notwithstanding the Table of Uses set out in subdivision (9) of the
Protection of Existing Riparian Buffers Rule, utility, nonelectric, other than
perpendicular crossings that have impacts only in Zone Two shall be
categorized as exempt.
(2) Notwithstanding the Table of Uses set out in subdivision (9) of the
Protection of Existing Riparian Buffers Rule, the piping of a stream allowed
under a permit issued by the United States Army Corps of Engineers shall be
categorized as an allowable use.
(3) Notwithstanding the definition of "Airport Facilities" set out in
sub -subdivision (b) of subdivision (2) of the Protection of Existing Riparian
Buffers Rule, "Airport Facilities" shall include any aeronautic industrial
facilities that require direct access to the airfield.
SECTION 2.(d) Additional Rule -Making Authority. - The Environmental
Management Commission shall adopt a rule to amend 15A NCAC 02B .0267 (Jordan Water
Page 2 Session Law 2013-395 Senate Bill 515-Ratified

• (1) Identify acceptable uses of reclaimed water, including toilet flushing, fire
protection, decorative water features, and landscape irrigation.
(2) Facilitate the permitting of reclaimed water systems.
(3) Establish standards for reclaimed water systems that are adequate to prevent
the direct distribution of reclaimed water as potable water.
fsl Gray Water Rule Making. — The Commission shall encourage and promote the safe
and beneficial use of gray water. The Commission shall adopt rules to:
Lll Identify acceptable uses of gray water, including toilet flushing, fire
protection, decorative water features, and landscape irrigation.
121 Facilitate the permitting of gray water systems.
(3.) Establish standards, in coordination with the Commission for Public Health.
for gray water systems that protect public health and safety and the
environment and reduce the use of potable water within individual
structures.
fdZ The Department shall develop policies and procedures to promote the voluntary
adoption and installation of gray water systems."
SECTION 12.(c) G.S. 130A-335(b) reads as rewritten:
"(b) All wastewater systems shall be regulated by the Department under rules adopted by
the Commission except for the following wastewater systems that shall be regulated by the
Department under rules adopted by the Environmental Management Commission:
(1) Wastewater collection, treatment, and disposal systems designed to
discharge effluent to the land surface or surface waters.
(2) Wastewater systems designed for groundwater remediation, groundwater
injection, or landfill leachate collection and disposal.
(3) Wastewater systems designed for the complete recycle or reuse of industrial
process wastewater.
(4). Gray water systems as defined in G.S. 143-350."
SECTION 12.(d) Article 6 of Chapter 153A of the General Statutes is amended by
adding a new section to read:
"$ 153A-145. Limitations on regulating cisterns and rain barrels.
No county ordinance may prohibit or have the effect of prohibiting the installation and
maintenance of cisterns and rain barrel collection systems used to collect water for irrigation
purposes. A county may regulate the installation and maintenance of those cisterns and rain
barrel collection systems for the purpose of protecting the public health and safety and for the
purpose of preventing them from becoming a public nuisance."
SECTION 12.(e) Article 8 of Chapter 160A of the General Statutes is amended by
adding a new section to read:
"$ 160A-202. Limitations on regulating cisterns and rain barrels.
No city ordinance may prohibit or have the effect of prohibiting the installation and
maintenance of cisterns and rain barrel collection systems used to collect water for irrigation
purposes. A city may regulate the installation and maintenance of those cisterns and rain barrel
collection systems for the purpose of protecting the public health and safety and for the purpose
of preventing them from becoming a public nuisance."
SECTION 13. Section 5 of S.L. 2007-438, as amended by Section 3(b) of S.L.
2009-484 and Section 19 of S.L. 2010-180, reads as rewritten:
"SECTION 5. This act becomes effective 1 September 2007 and applies to all nutrient
offset payments, including those set out in 15A NCAC 2B .0240, as adopted by the
Environmental Management Commission on 12 January 2006. The fee schedule set out in
Section 1 of this act expires 1 September 2011. when amendments to 15A NCAC 02B .0240
and .0274 become effective."
SECTION 14. Section 2(b) of S.L. 2009-216 reads as rewritten:
"SECTION 2.(b) Implementation. — Notwithstanding sub -subdivision (c) of subdivision
(6) of Wastewater Discharge Rule 15A NCAC 02B .0270, each existing discharger with a
permitted flow greater than or equal to 0.1 million gallons per day (MGD) shall limit its total
nitrogen discharge to its active individual discharge allocation as defined or modified pursuant
to Wastewater Discharge Rule 15A NCAC 02B .0270 no later than calendar year 2016.2016,
unless the discharger has received an authorization pursuant to G.S. 143-215.1 for construction,
installation, or alteration of the treatment works for purposes of complying with the allocation
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under Wastewater Discharge Rule 15A NCAC 02B .0270 by December 31, 2016, at which
point the compliance date shall be no later than calendar year 2018."
SECTION 15.(a) Notwithstanding G.S. 150B-19, as amended by S.L. 2011-13, the
Commission for Public Health may adopt rules to incorporate all or part of the United States
Food and Drug Administration Food Code 2009 and to require that employees of
establishments regulated under subsections (a) and (a2) of G.S. 130A-248 be certified in food
protection in accordance with the United States Food and Drug Administration Food Code
2009.
SECTION 15.(b) G.S. 130A-248 is amended by adding a new subsection to read:
"(a5) The Department of Health and Human Services may grant a variance from rules
adopted pursuant to this section in accordance with the United States Food and Drug
Administration Food Code 2009 if the Department determines that the issuance of the variance
will not result in a health hazard or nuisance condition."
SECTION 16.1. Variance from Setbacks for Public Water Supply Wells. —
(a) The Department of Environment and Natural Resources may grant a variance from
the minimum horizontal separation distances for public water supply wells set out in 15A
NCAC 18C .0203(2)(d) and 15A NCAC 18C .0203(2)(e) upon finding that:
(1) The well supplies water to a noncommunity water system as defined in
G.S. 130A-313(10)(b) or supplies water to a business or institution, such as
a school, that has become a noncommunity water system through an increase
in the number of people served by the well.
(2) It is impracticable, taking into consideration feasibility and cost, for the
public water system to comply with the minimum horizontal separation
distance set out in the applicable sub -subpart of 15A NCAC 18C .0203(2).
(3) There is no reasonable alternative source of drinking water available to the
public water supply system.
(4) The granting of the variance will not result in an unreasonable risk to public
health.
(b) A variance from the minimum horizontal separation distances set out in 15A NCAC
18C .0203(2)(d) and 15A NCAC 18C .0203(2)(e) shall require that the noncommunity public
water supply well meet the following requirements:
(1) The well shall comply with the minimum horizontal separation distances set
out in 15A NCAC 18C .0203(2)(d) and 15A NCAC 18C .0203(2)(e) to the
maximum extent practicable.
(2) The well shall meet a minimum horizontal separation distance of 25 feet
from a building, mobile home, or other permanent structure that is not used
primarily to house animals.
(3) The well shall meet a minimum horizontal separation distance of 100 feet
from any animal house or feedlot and from cultivated areas to which
chemicals are applied.
(4) The well shall meet a minimum horizontal separation distance of 50 feet
from surface water.
(5) The well shall comply with all other requirements for public well water
supplies set out in 15A NCAC 18C .0203.
SECTION 16.2. Rule Making. — The Commission for Public Health shall adopt
rules that are substantively identical to the provisions of Section 16.1. The Commission may
reorganize or renumber any of the rules to which this section applies at its discretion. Rules
adopted pursuant to this section are not subject to G.S. 150B-21.9 through G.S. 150B-21.14.
Rules adopted pursuant to this section shall become effective as provided in
G.S. 150B-21.3(bl) as though 10 or more written objections had been received as provided by
G.S. 150B-21.3(b2).
SECTION 16.3. Effective Date. — Section 16.1 of this act expires when permanent
rules to replace Section 16.1 have become effective as provided by Section 16.2 of this act.
SECTION 17.(a) Definitions. — The following definitions apply to this act and its
implementation:
(1) The definitions set out in G.S. 113A-103 and G.S. 143-212.
(2) The definitions set out in the Neuse River Basin Riparian Buffer Rule and
the Tar -Pamlico River Basin Riparian Buffer Rule.
(3) "Coastal wetlands" means marshland as defined in G.S. 113-229.
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