NC0043532_Permit Issuance_20181019

ROY *COOPER
Governor
KCHAEL S. REGAN
secretary
LINDA CULPEPPER
Interim Director
Donna L. Davis
Stanly County Utilities Director
Stanly County
1000 North First Street, Suite 10
Albemarle, North Carolina 29001
Dear Ms. Davis:
NORTH CAROLINA
Envlranm&ValQuaf ty
October 19, 2018
Subject: Final NPDES Permit Renewal
Permit NCO043532
West Stanly WWTP
Stanly County
Grade III Biological WPCS
SIC Code 4952
Division personnel have reviewed and approved your application for renewal 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).
Please note that the receiving streams are listed as impaired for copper and zinc on the North
Carolina 2016 303(d) Impaired Waters List. Addressing impaired waters is a high priority with
the Division, and instream data will continue to be evaluated. If there is noncompliance with
permitted effluent limits and stream impairment can be attributed to your facility, then mitigative
measures may be required.
The following changes were made to the draft permit sent to you on May 2, 2018:
The facility classification has been added to the titles in Special Conditions A. (1), (2), &
(3).
The final permit maintains the following significant changes identified in the letter sent on
May 2, 2018:
• The NC 2007-2014 Water Quality Standards (WQS) Triennial Review was approved by the NC
Environmental Management Committee (EMC) on November 13, 2014. The US EPA
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
91.9.707.9000

subsequently approved the WQS revisions on April 6, 2016 with some exceptions. The NC
Division of Water Resources NPDES Permitting Unit is required to implement the new dissolved
metal standards in all permits public noticed after April 6, 2016. The new standards for most
metals include acute standards. Further, the freshwater standards for several metals are expressed
as the dissolved form of the metals, and seven metals have hardness -dependent equations.
As a result, the NPDES Permitting Unit will need site -specific effluent hardness data and
instream hardness data, upstream of the discharge, for each facility monitoring these metals in
order to calculate permit limitations. Effluent hardness and instream hardness sampling,
upstream of the discharge, has been added to this permit at a monitoring frequency of quarterly.
See Section A. (1) Effluent Limitations and Monitoring Requirements.
• Total copper and zinc monitoring have been changed to quarterly monitoring. A reasonable
potential analysis did not indicate potential to violate the WQS, however, both receiving streams
are impaired for copper and one for zinc, therefore monitoring will be maintained until the
streams can be re-evaluated under the new WQS or a TMDL is in place to address the
impairments. Additionally, in accordance with 15A NCAC 2B .0500 all test procedures must
produce detection and reporting levels that are below the permit discharge requirements and all
data generated must be reported to the approved detection level or lower reporting level of the
procedure. Currently, DWR's laboratory identifies the Practical Quantitation Limit (PQL) for
total copper at <2 µg/L and total zinc at <10 µg/L. Using these values as benchmarks, future
sampling for total copper and zinc should sample to these lower reporting levels.
• In a limited dataset, bis(2-ethylhexyl)phthalate and cyanide showed reasonable potential to
violate WQS in Long Creek via emergency Outfall 001 and quarterly monitoring for these
parameters has been added to that outfall. See Section A. (2).
• Emergency Outfall 001 has been removed upon expansion to 1.2 MGD. Upon expansion to 1.2
MGD, BOD, ammonia, and dissolved oxygen limits change and total nitrogen and phosphorous
sampling are increased to monthly. See Section A. (3). After expansion, the facility will have to
perform three seasonal effluent pollutant scans during the permit cycle and four second species
toxicity tests prior to permit renewal in accordance with 40 CFR 122.216)(5). See Section A. (5).
• Instream monitoring for conductivity has been removed due to lack of industrial dischargers and a
pretreatment program.
• Some of the wording in A. (4) CHRONIC TOXICITY PERMIT LIMIT has been updated, please
review carefully. The changes include a 6.0% effluent concentration at 1.2 MGD.
• Special condition A. (6) EFFLUENT MERCURY ANALYSIS has been added to the permit
requiring at least one low level mercury analysis using EPA Method 1631 E within 12 months
prior to the permit renewal application date until expansion to 1.2 MGD.
• Federal program reports. The requirement to continue reporting discharge monitoring data
electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet
application has been added to your NPDES permit. [See Special Condition A. (7)] regulations
require electronic submittal of all discharge monitoring reports (DMRs) and
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.
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center ( Raleigh, North Carolina 27699-1617
919.707.9000

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 any other Federal, State, or Local governmental permits that may be required.
If you have any questions concerning this permit, please contact David Hill at [phone] or
via email at [e-mail].
Sincerely,
edapep per, nterimDirectorater Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
Ecopy: US EPA Region 4
DWI?/Mooresville Regional Office /Water Quality Regional Operations
DWR/Ecosystems Branch/Mark Vander Borgh
DWR/Aquatic Toxicology Branch/Susan Meadows
DEQ��
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

Permit NCO043532
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELINIINATION SYSTEM
In compliance with the provision 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,
Stanly County
is hereby authorized to discharge wastewater from a facility located at the
West Stanly WWTP
Off of NCSR 1953
East of Oalkboro
Stanly County
to receiving waters designated as the Rocky River (Outfall 002) and Long Creek (Outfall 001) in
the Yadkin — Pee Dee River Basin in accordance with effluent limitations, monitoring
requirements, and other conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective December 1, 2018
This permit and authorization to discharge shall expire at midnight January 31, 2023
Signed this day October 19, 2018
da Culpeppei/
16 Clerim. Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 15

Permit NC0043532
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation 'or discharge are
hereby revoked. As of this permit issuance, any previously issued permit bearing this number is
no longer effective. Therefore, the exclusive authority to operate and discharge from this facility
arises under the permit conditions, requirements, terms, and provisions included herein.
Stanly County
is hereby authorized to:
1. Continue to operate and maintain a 0.90 MGD wastewater treatment plant consisting
of the following components:
• Influent pump station with bar screen, grit removal, flow measurement
• Influent flow splitter box
• Influent composite sampler
• Two (2) 0.6 MG aeration basin with mechanical aerators
• Clarifier splitter box
• Two (2) 0.055 MG secondary clarifiers
• WAS pump station
• RAS pump station
• One (1) 0.2 MG secondary clarifier
• Return sludge pump station
• 0.035 MG Chlorine contact basin with dechlorination unit
• Effluent composite sampler
• Effluent pump station with three (3) pumps and force main to Outfall 002
• Two (2) 225 flsludge holding tanks
• One (1) 0.4 MG aerobic digester/sludge holding basin with floating aerators,
floating mixer, a floating decant mechanism, and auxiliary pumps
• Two (2) 1,250'fl? sludge drying beds, surplus
• Standby electric generator
The facility is located at the West Stanly WWTP, off of NCSR 1953, east of
Oakboro, Stanly County.
2. After receiving an Authorization to Construct, construct a new wastewater treatment
facility with an average design flow of up to 1.2 MGD.
(Continued next page)
Page 2 of 15

Permit NC0043532
(Continued Supplement to Permit Cover Sheet)
3. Upon submittal of an Engineer's Certification form, operate said treatment works at
1.2 MGD.
4. Discharge from said treatment works at the locations specified on the attached map into
Rocky River (Outfall 002) and Long Creek (emergency Outfall 001 until expansion
above 0.9 MGD). Both locations are classified C waters in the Yadkin -Pee Dee River
Basin.
Page 3 of 15

Permit NCO043532
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade III Biological Water Pollution
Control System [15A NCAC 08G .0302]
a. During the period beginning on the effective date of the permit and lasting until expansion
above 0.9 MGD or expiration, whichever is sooner, the Permittee is authorized to discharge
treated domestic wastewater from Outfall 002 (Rocky River). Such discharges shall be
limited and monitored 1 by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
-Sample
Location 2
Flow
0.9 MGD
Continuous
Recording
I or E
BOD, 5 day, 200C 3
(April 1— October 31)
9.0 mg/L
13.5 mg/L
3/Week
Composite
I and E
BOD, 5 day, 200C 3
(November 1— March 31
18.0 mg/L
27.0 mg/L
3/Week
Composite
I and E
Total Suspended Solids 3
30.0 mg/L
45.0 mg/L
3/Week
Composite
I and E
NH3 as N
(April 1— October 31
3.0 mg/L
9.0 mg/L
3/Week
Composite
E
NH3 as N
(November 1— March 31
6.0 mg/L
18.0 mg/L
3/Week
Composite
E
Dissolved Oxygen
Not less than 5.0 mg/L, daily average
3/Week
Grab
E
Dissolved Oxygen, mg/L
I
I
Variable 2
Grab
U, D
pH.
Between 6.0 and 9.0 Standard Units
3/Week
Grab
E
Fecal Coliform
(geometric mean
200/100 mL
400/100 mL
3/Week
Grab
E
Fecal Coliform, #/100 mL
Variable 2
Grab
U, D
Total Residual Chlorine 4
28 µg/L
3/Week
Grab
E
Total Copper, µg/L
Quarterly
Composite
E
Total Zinc, µg/L
Quarterly
Composite
E
Temperature, °C
Daily
Grab
E
Temperature, °C
Variable 2
Grab
U, D
Total Hardness as
CaCO3 5, m L
QuarterlyComposite
E
Total Hardness as
CaCO3 mg/L
Quarterly
Grab
U
Total Nitrogen', mg/L
Quarterly
Composite
E
Total Phosphorus, mg/L
Quarterly
Composite
E
Chronic Toxicity 8
Quarterly
Composite
E
Page 4 of 15

Permit NCO043532
(Continued A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC
DWR's eDMR application system. See Special Condition A. (7).
2. Sample locations: E - Effluent, I - Influent, U - Upstream at least 100 feet above the
discharge point, D - Downstream 1.7 miles below the discharge point (near the end of
NCSR 1659). Instream monitoring requirements are waived as long as the facility
retains membership in the Yadkin -Pee Dee River Basin Association. If membership is
cancelled, facility will monitor 3/week during the months of June through September
and once per week during the remaining months of the year.
3. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of
the respective influent value (85% removal).
4. The Division shall consider all effluent total residual chlorine values reported below 50
µg/L to be in compliance with the permit. However, the Permittee shall continue to
record and submit all values reported by a North Carolina certified laboratory (including
filed certified) even if these values fall below 50 µg/L.
5. Effluent hardness sampling shall be performed in conjunction with testing for hardness
dependent metals (cadmium, chromium, copper, lead, nickel, silver, and zinc).
6. The Permittee shall sample instream hardness, approximately 100 yards upstream from
the facility's discharge and shall be representative of the hardness in the receiving
stream. If the Permittee is a member of a Monitoring Coalition Program, sampling for
instream hardness may be waived as long as the Monitoring Coalition agrees to sample
hardness at the same upstream location, at a minimum frequency of quarterly, and the
Permittee has obtained approval from the DWR -NPDES Permitting Unit. The
Permittee is responsible for submitting instream hardness test results with its permit
renewal application package. If Coalition membership is cancelled or the Coalition
terminates instream hardness sampling at the approved station, the Permittee will
immediately notify the Division and resume sampling for instream hardness, upstream
of its discharge.
7. Total Nitrogen is the sum of TKN + NO3-N + NO2-N, where TKN and NO3-N + NO2-
N are Total Kjeldahl Nitrogen and Nitrate and Nitrite Nitrogen respectively.
8. Chronic Toxicity (Ceriodaphnia) P/F at 4.6%; January, April, July, and October. See
Special Condition A. (4) — Outfall 002.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 5of15

Permit NCO043532
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
115A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade III Biological Water Pollution
Control System [15A NCAC 08G .0302]
a. During the period beginning on the effective date of the permit and lasting until expansion
above 0.9 MGD or expiration, the Permittee is authorized to discharge treated domestic
wastewater from emergency backup Outfall 001 (Long Creek) in case of an effluent
pump station failure. Such discharges shall be limited and monitored 1 by the Permittee
as specified below:
EFFLUENT
CHARACTERISTICS
LIMITATIONS-.
MONITORING: REQUIREMENTS
Monthly
Average.
Weekly, _
Average
Daily
Maximum
Measurement
Fre uen.c
Sample
T e
Sample
Location 2
Flow
0.9 MGD
Continuous
Recording
I or E
BOD, 5 day, 200C 3
(April 1— October 31)
9.0 mg/L
13.5 mg/L
3/Week
Composite
I and E
BOD, 5 day, 20°C 3 (November 1— March 31
18.0 mg/L
27.0 mg/L
3/Week
Composite
I and E
Total Suspended Solids-3
30.0 mg/L
45.0 mg/L
3/Week
Composite
I and E
NH3 as N
(April 1— October 31
2.8 mg/L
8.4 mg/L
3/Week
Composite
E
NH3 as N
(November 1— March 31
6.0 mg/L
18.0 mg/L
3/Week
Composite
E
Dissolved Oxygen
Not less than 5.0 mg/L, daily average
3/Week
Grab
E
Dissolved Oxygen, mg/L
Variable 2
Grab
U, D
pH
Between 6.0 and 9.0 Standard Units
3/Week'
Grab
E
Fecal Coliform
(geometric mean
200/100 mL
400/100 mL
3/Week
Grab
E
Fecal Coliform, #/100 mL
Variable z
Grab
U, D
Total Residual Chlorine 4
28 µg/L
3/Week
Grab
E
Total Copper, µg/L
Quarterly
Composite
E
Total Zinc, µg/L
Quarterly
Composite
E
Temperature, °C
Daily
Grab
E
Temperature, °C
Variable z
Grab
U, D
Total Hardness as
CaCO3 , m
Quarterly
Composite
E
Total Hardness as
CaCO3 6, m
Quarterly
Grab
U
Total Nitrogen 7, mg/L
Quarterly
Composite
E
Total Phosphorus, mg/L
Quarterly
Composite
E
Chronic Toxicity 8
Quarterly
Composite
E
Bis(2-ethylhexyl)phthalate,
Quarterly
Composite
E
Cyanide, mg/L
Quarterly
Grab
E
Page 6 of 15

Permit NCO043532
(Continued A: (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC
DWR's eDMR application system. See Special Condition A. (7).
2. Sample locations: E - Effluent, I - Influent, U - Upstream at least 100 feet above the
discharge point, D - Downstream 1.7 miles below the discharge point (near the end of
NCSR 1659). Instream monitoring requirements are waived as long as the facility
retains membership in the Yadkin -Pee Dee River Basin Association. If membership is
cancelled, facility will monitor 3/week during the months of June through September
and once per week during the remaining months of the year.
3. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of
the respective influent value (85% removal).
4. The Division shall consider all effluent total residual chlorine values reported below
50 µg/L to be in compliance with the permit. However, the Permittee shall continue to
record and submit all values reported by a North Carolina certified laboratory
(including filed certified) even if these values fall below 50 µg/L.
5. Effluent hardness sampling shall be performed in conjunction with testing for hardness
dependent metals (cadmium, chromium, copper, lead, nickel, silver, and zinc).
.6. The Permittee shall sample instream hardness, approximately 100 yards upstream from
the facility's discharge and shall be representative of the hardness in the receiving
stream. If the Permittee is a member of a Monitoring Coalition Program, sampling for
instream hardness may be waived as long as the Monitoring Coalition agrees to sample
hardness at the same upstream location, at a minimum frequency of quarterly, and the
Permittee has obtained approval from the DWR -NPDES Permitting Unit. The
Permittee is responsible for submitting instream hardness test results with its permit
renewal application package. If Coalition membership is cancelled or the Coalition
terminates instream hardness sampling at the approved station, the Permittee will
immediately notify the Division and resume sampling for instream hardness, upstream
of its discharge.
7. Total Nitrogen is the sum of TKN + NO3-N + NO2-N, where TKN and NO3-N + NO2-
N are Total Kj eldahl Nitrogen and Nitrate and Nitrite Nitrogen respectively.
8. Chronic Toxicity (Ceriodaphnia) P/F at 30%; January, April, July, and October. See
Special Condition A. (4) — Outfall 001.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 7of15

Permit NC004353L
A. (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade III Biological Water Pollution
Control System [15A NCAC 08G .0302]
a. During the period beginning upon receipt of an Engineer's Certificate for completion of
the 1.2 MGD expansion and lasting until expiration, the Permittee is authorized to
discharge treated domestic wastewater from Outfal1002 (Rocky River). Such discharges
shall be limited and monitored 1 by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
- LIMITATIONS :.; -
WNT ORING REQUIREMENTS
Monthly
Average
Weekly.
Average.
Daily-
: Maximum .
Measurement
,,,..Fr0Aueqqy
Sample
Type
Sample
Location 2
Flow
1.2 MGD
Continuous
Recording
I or E
BOD, 5 day, 200C 3
10.0 mg/L
15.0 mg/L
3/Week
Composite
I and E
Total Suspended Solids 3
30.0 mg/L
45.0 mg/L
3/Week
Composite
I and E
NH3 as N
4.0 mg/L
12.0 mg/L
3/Week
Composite
E
Dissolved Oxygen
Not less than 6.0 mg/L; daily average
3/Week
Grab
E
Dissolved Oxygen, mg/L
Variable 2
Grab
U, D
pH
Between 6.0 and 9.0 Standard Units
3/Week
Grab
E
Fecal Coliform
(geometric mean
200/100 mL
400/100 mL
3/Week
Grab
E
Fecal Coliform, #/100 mL
Variable 2
Grab
U, D
Total Residual Chlorine 4
28 µg/L
3/Week
Grab
E
Total Copper, µg/L
Quarterly
Composite
E
Total Zinc, µg/L
Quarterly
Composite
E
Temperature, °C
Daily
Grab
E
Temperature, °C
Variable 2
Grab
U, D
Total Hardness as
m CaCO3 5,
QuarterlyComposite
p
E
Total Hardness as
CaCO3 , In
Quarterly
Grab
U
Total Nitrogen 7, mg/L
Monthly
Composite
E
Total Phosphorus, mg/L
Monthly
Composite
E
Chronic Toxicity 8
Quarterly
Composite
E
Effluent Pollutant Scan
See Footnote 9
E
Footnotes:
1. The Permittee shall submit discharge monitoring reports electronically using NC
DWR's eDMR application system. See Special Condition A. (7).
Page 8of15

Permit NCO043532
(Continued A. (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
2. Sample locations: E - Effluent, I - Influent, U - Upstream at least 100 feet above the
discharge point, D - Downstream 1.7 miles below the discharge point (near the end of
NCSR 1659). Instream monitoring requirements are waived as long as the facility
retains membership in the Yadkin -Pee Dee River Basin Association. If membership is
cancelled, facility will monitor 3/week during the months of June through September
and once per week during the remaining months of the year.
3. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of
the respective influent value (85% removal).
4. The Division shall consider all effluent total residual chlorine values reported below
50 µg/L to be in compliance with the permit. However, the Permittee shall continue to
record and submit all values reported by a North Carolina certified laboratory
(including filed certified) even if these values fall below 50 µg/L.
5. Effluent hardness sampling shall be performed in conjunction with testing for hardness
dependent metals (cadmium, chromium, copper, lead, nickel, silver, and zinc).
6. The Permittee shall sample instream hardness, approximately 100 yards upstream from
the facility's discharge and shall be representative of the hardness in the receiving
stream. If the Permittee is a member of a Monitoring Coalition Program, sampling for
instream hardness may be waived as long as the Monitoring Coalition agrees to sample
hardness at the same upstream location, at a minimum frequency of quarterly, and the
Permittee has obtained approval from the DWR -NPDES Permitting Unit. The
Permittee is responsible for submitting instream hardness test results with its permit
renewal application package. If Coalition membership is cancelled or the Coalition
terminates instream hardness sampling at the approved station, the Permittee will
immediately notify the Division and resume sampling for instream hardness, upstream
of its discharge.
7. Total Nitrogen is the sum of TKN + NO3-N + NO2-N, where TKN and NO3-N + NO2-
N are Total Kjeldahl Nitrogen and Nitrate and Nitrite Nitrogen respectively.
8. Chronic Toxicity (Ceriodaphnia) P/F at 6.0%; January, April, July, and October. See
Special Condition A. (4) — Outfall 002.
9. The permittee shall perform three Effluent Pollutant Scans and four Second Species
Toxicity Tests in conjunction with this permit next renewal, commencing with this
permit activation of the 1.2 MGD terns. See Special Condition A. (5).
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 9 of 15

Permit NCO043531
A. (4) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
115A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 4.6% for a permitted flow of 0.9
MGD and 6.0% for a permitted flow of 1.2 MGD from Outfa11002. An effluent concentration of
30.0% shall be used for a permitted flow of 0.9 MGD from Outfall 001.
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 during
the months of January, April, July, and October. 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
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, NC 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water 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 Water Sciences Section at the address cited above.
Page 10 of 15

Permit NCO043532
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
(Continued A. (4) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY))
day of the month in which toxicity testing is required by this permit and continues until the final
day of the third month.
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.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival, minimum control organism reproduction, and appropriate
environmental controls, shall constitute an invalid test and will require immediate follow-up
testing to be completed no later than the last day of the month following the month of the initial
monitoring.
A. (5) EFFLUENT POLLUTANT SCAN
[G.S.143-215.1(b)]
Once the 1.2 MGD limitation page is effective, the Permittee shall perform a total of three (3) Effluent Pollutant
Scans for all parameters listed below. Based on the time between the 1.2 MGD effective date and when the
renewal application is submitted, the three scans will be conducted at equal intervals so the data can be
incorporated in the renewal application. 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 scan, 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
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-trichloro ethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acidactable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
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
Page 11 of 15

Permit NC004353�
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
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
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n propylamine
N-nitrosodimethylamine
N-nitroso diphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Reporting. Test results shall be reported on DWQ Form -A MR-PPA1 (or in a form approved by the
Director) by December 31 st of each designated sampling year. The report shall be submitted to the
following address: NC NCDWR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina
27699-1617.
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal
facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to
additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.216)(5). The US EPA
requires four (4) toxicity tests for a test organism other than the test species currently required in this permit.
The multiple species tests should be conducted either quarterly for a 12-month period prior to submittal of
the permit renewal application, or four tests perfoimed at least annually in the four and one half year period
prior to the next renewal application. These tests shall be performed for acute or chronic toxicity, whichever
is specified in this permit. The multiple species toxicity test results shall be filed with the Aquatic
Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity
Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal application to
the NPDES Permitting Unit.
A. (6) EFFLUENT MERCURY ANALYSIS
[G.S.143-215.3(a)(2), G.S.143-215.66]
If no Effluent Pollutant Scans are required in conjunction with the next permit renewal, the
Permiee shall provide in conjunction with the next permit renewal application a minimum of one
effluent mercury analysis using EPA Method 1631 E determined within 12 months prior to the
Page 12 of 15

Permit NCO043532
application date. Any additional effluent mercury measurements conducted from the effective date
of this permit and up to the application date shall also be submitted with the renewal application.
If the mercury analysis is not provided with the application, the application may be returned as
incomplete and the Permittee considered non -compliant.
A. (7) ELECTRONIC REPORTING OF DISCHARGE MONITORING
REPORTS [G.S.143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports. The final NPDES Electronic Reporting Rule was adopted and became effective
on December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of
this permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1
The permittee shall report 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 / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
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. See "How to Request a
Waiver from Electronic Reporting" section below.
Page 13 of 15

Permit NCO043532
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.
Starting on December 21, 2020, the permittee must electronically report the following
compliance monitoring data and reports, when applicable:
Sewer Overflow/Bypass Event Reports;
Pretreatment Program Annual Reports; and
Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to
Request a Waiver from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at
the time of each electronic submission. The permittee should use the EPA's website
resources to identify the initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the
entity (EPA or the state authorized by EPA to implement the NPDES program) that is the
designated entity for receiving electronic NPDES data [see 40 CFR 127.2(b)).
EPA plans to establish a website that will also link to the appropriate electronic reporting tool
for each type of electronic submission and for each state. Instructions on how to access and
use the appropriate electronic reporting tool will be available as well. Information on EPA's
NPDES Electronic Reporting Rule is found at:
hgps://www.federalregister. Gov/documents/2015/10/22/2015-24954/national-pollutant-
discharize-elimination-s sty em-npdes-electronic-reportin -rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section
above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To
obtain an electronic reporting waiver, a permittee must first submit an electronic reporting
waiver request to the Division. Requests for temporary electronic reporting waivers 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 submitting monitoring data and
reports. The duration of a temporary waiver shall not exceed 5 years and shall thereupon
expire. At such time, monitoring data and reports shall be submitted electronically to the
Division unless the permittee re -applies for and is granted a new temporary electronic
reporting waiver by the Division. Approved electronic reporting waivers are not
transferrable. Only permittees with an approved reporting waiver request may submit
monitoring data and reports on paper to the Division for the period that the approved
reporting waiver request is effective.
Page 14 of 15

Permit NCO043532
Information on eDMR and the application for a temporary electronic reporting waiver are
found on the following web page:
http://dM.nc.gov/about/divisions/water-resources/edmr
4. 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. (I 1.)(a) or by a duly authorized representative of that person as described
in Part II, Section B. (I 1.)(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://deg.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system
shall make the following certification [40 CFR 122.22] . NO OTHER STATEMENTS OF
CERTIFICATION WILL BE ACCEPTED:
"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 submitted 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 fines and imprisonment for knowing
violations. "
5. 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 15 of 15

The Stanly News & Press
PO BOX 488
ALBEMARLE NC 28002
704-982-2121
AFFIDAVIT OF INSERTION
DATE: 05/06/2018
ATTN: WREN THEDFORD NCDENR-DIVISION OF WATER RESOU
1617 MAIL SERVICE CENTER
RALEIGH NC 27699-1617
Account,906073
Order N 137953
Start Date: 05/06/2018
Ad Description: PUBLIC NOTICE NORTH CARO
Ad Size: 47.00
Inserts: 1
Ad Price: 58.76
NORTH CAROLINA, STANLY COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State,
duly commissioned, qualified, and authorized by , who being
first duly sworn, deposes and says: that she is PUBLISHER of a
newspaper known as THE STANLY NEWS AND PRESS, published, issued,
and entered as second class mail in the City of Albemarle, in said
County and State; that she is authorized to make this affidavit and
sworn statement; that the notice or other legal advertisement, a true
copy of which is attached hereto, was published in THE STANLY NEW AND PRESS
on the dates specified on the copy attached and that the said newspaper
in which such notice, paper document or legal advertisement was published,
at the time of each and every such publication, a newspaper meeting
all of the requirements and qualifications of Section 1-597 of the
General Statures of North Carolina and was a qualified newspaper within
the meaning of section 1-597 of the General Statures of North Carolina
A2Jt1L
Sherrf Nance
Notary Public
My commission expires 07/14/2021
PUBLIC NOTICE
North Carolina
Environmental Management
Commission/NPDES Unit
1617 ail-Sewiee£'enter-
_eig , NC 27699-1617
Notice of Intent to Issue a
NPDES Wastewater Permit
The North Carolina Environ-
mental Management Commis-
sion proposes to issue a
NPDES wastewater discharge
permit to the person(s) listed
below. Written comments re-
garding the proposed permit
will be accepted until 30 days
after the publish date of this
notice. The Director of the NC
Division of Water Resources
(DWR) may hold a public hear-
ing should there be a signifi-
cant degree of public interest.
Please mail comments and/or
information requests to DWR at
the above address. Interested
persons may visit the DWR at
512 N. Salisbury Street,
Raleigh, NC to review informa-
tion on file. Additional informa-
tion on NPDES permits and
this notice may be found on our
the West Stanly -WWTP in
Stanly County. This permitted
discharge is treated municipal
wastewater to the Rocky River,
Yadkfn-Pee Dee River Basin.

Fact Sheet
NPDES Permit No. NCO043532
Permit Writer/Email Contact David Hill, [e-mail]:
Date: April 17, 2018
Division/Branch: NC Division of Water Resources/NPDES Complex Permitting
Fact Sheet Template: Version 09Jan2017
Permitting Action:
❑ Renewal
® Renewal with Expansion
❑ New Discharge
❑ Modification (Fact Sheet should be tailored to mod request)
Note: A complete application should include the following:
• For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee
• For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 21 species WET
tests.
• For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based
on industry category.
Complete applicable sections below. If not applicable, enter NA.
1. Basic Facility Information
Facility Information
Applicant/Facility Name:
Stanly County/West Stanly WWTP (formerly Oakboro WWTP)
Applicant Address:
1000 North First Street, Albemarle, NC 29001
Facility Address:
24939-B Barbee's Grove Road, Oakboro, NC 28129
Permitted Flow:
0.9 MGD/Expansion 1.2 MGD
Facility Type/Waste:
MINOR Municipal; 100% domestic (Upon Expansion MAJOR
Municipal)
Facility Class:
Class 3
Treatment Units:
Bar Screen, Activated Sludge/Aeration, Disinfection
Pretreatment Program (Y/1)
N
County:
Stanly
Region
Mooresville
Briefly describe the proposed permitting action and facility background: Stanly County has applied for
an NPDES permit renewal for 0.9 MGD, and for a modification to rerate the existing facility to
expand in the future to 1.2 MGD, for the West Stanly WWTP (formerly Oakboro WWTP) in
February 2014. The application included the required EAA for the expansion. This facility serves
Page 1 of 11

as a regional facility for a population of 6,400 residents for the communities of Oakboro, Stanfield,
and Locust.
The facility has a primary Outfall 002 and an emergency Outfall 001, each outfall impacts different
receiving streams. Discharge from Outfall 002 requires the operation of effluent pumps to transfer
the treated wastewater via a pressure sewer to Rocky River. Discharge from Outfall 001 is an
emergency gravity overflow from the effluent pump station to Long Creek. Mechanical issues that
have resulted in the historical episodic discharge from the emergency overflow will be resolved as
part of the expansion design/constructions. Upon expansion to 1.2 MGD the facility's Outfall 001
will be no longer be considered as an active discharge.
This segment of the Yadkin -Pee Dee River that receives the discharge from Outfalls 001 and 002 is
downstream from High Rock Lake. West Stanly is an active member of the Yadkin -Pee Dee River
Basin Association.
A speculative letter was issued in 2005 for a proposed expansion to 1.2 MGD for this facility based
on a QUAL2E model prepared for Rocky River and Mallard Creek. The speculative limits are still
valid and will be applied in this permit.
2. Receiving Waterbody Information:
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001 — Long Creek
Outfall 002 - Rocky River
Stream Segment:
11-17-31
13-17
Stream Classification:
C
C
Drainage Area (mi2):
192.5
965
Summer 7Q 10 (cfs)
3.3
29
Winter 7Q10 (cfs):
5.8
51
30Q2 (cfs):
-
-
Average Flow (cfs):
183
920
IWC (% effluent):
30% at 0.9 MGD
4.6% at 0.9 MGD
6.0% at 1.2 MGD
303(d) listed/parameter:
Yes, the segment is listed in
the 2016 303(d) for Copper
impairment
Yes, the segment is listed in
the 2016 303(d) for Copper
and Zinc impairments IR
Category 5e
Subject to TMDL/parameter:
Yes- State wide Mercury TMDL implementation.
Subbasin/HUC:
Yadkin -Pee Dee; 03040105
USGS Topo Quad:
G17NE
Page 2 of 11

3. Effluent Data Summary
Effluent data for Outfall 002 is summarized below for the period of March 2016 through November 2017.
Table 1. Effluent Data Summary Outfall 002
-Parameter
Units
AverageMi
Max
n
Permit
Limit
Flow
MGD
0.456
2.41
0.24
MA 0.9
BOD summer
mg/l
5.89
56.0
< 2
WA 13.5
MA 9.0
WA 27.0
BOD winter
mg/1
15.23
383.0
< 2
MA 18.0
WA 9.0
NH3N summer
mg/1
1.08
13.2
0.04
MA 3.0
NH3N winter
mg/l
2.64
33.8
< 0.04
WA 18.0
MA 6.0
WA 45.0
TSS
mg/l
15.67
973.0
< 2.5
MA 30.0
6.0 >_ pH <_
pH
Su-
6.87
7.5
6.0
9.0
(geometric)
Fecal coliform
#/100 ml
399
> 8600
< 1
WA 400
MA 200
DO
mg/l
8.77
14.6
5.9
DA >_5.0
TRC
µg/1
20.1
479
< 10
DM 28.0
Temperature
° C
17.77
26.7
6.1
TN
mg/l
20.43
35.2
5.2
TP
mg/l
2.74
4.78
0.2
Total Copper
mg/l
10.5
14
< 10
Total Zinc
mg/1
Only two values: 54, 82
MA -Monthly Average, WA -Weekly Average, DM -Daily Maximum, DA Daily Average
Page 3 of 11

4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions
when model results for instream DO are within 1 mg/l of instream standard at full permitted flow; 2) to
verify model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other
instream concerns. Instream monitoring may be conducted by the Permittee, and there are also
Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in
which case instream monitoring is waived in the permit as long as coalition membership is maintained).
If applicable, summarize any instream data and what instream monitoring will be proposed for this
permit action: The current permit requires instream monitoring for dissolved oxygen and
temperature. West Stanly is a member of the Yadkin -Pee Dee River Basin Association and as such
instream monitoring was waived. Currently there are no instream monitoring stations active
downstream of either outfall.
Is this facility a member of a Monitoring Coalition with waived instream monitoring (YIN): Yes
Name of Monitoring Coalition: Yadkin -Pee Dee River Basin Association
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past S years): During Oakboro
ownership, February 2010 to February 2014, there were 29 limit violations. Oakboro paid $1,363 in
fines. Since the transfer of ownership to Stanly County in March 2014 the facility has had 53 limit
violations (BOD, ammonia, TSS, fecal coliform) and paid $10,480 in fines.
Summarize the compliance record with aquatic toxicity test limits and any second species test results
(past S years): The facility passed 20 of the last 20 quarterly chronic toxicity tests (14 under current
permittee Stanly County). As a minor facility, no second species testing is required.
Summarize the results from the most recent compliance inspection: The last facility inspection
conducted in 2016 reported that the facility was having operational issues from high influent BOD
and NH3-N loading, and visible effluent clarity issues, as the result of a recently accepted
wastewater stream from Enterprises Rendering. Acceptance of the Enterprise Rendering
wastewater was terminated by the Permittee at the direction of The Mooresville Regional Office.
6. Water Quality -Based Effluent Limitations (WQBELs)
Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1 Q 10 streamflow (acute Aquatic Life); 7Q 10 streamflow (chronic Aquatic
Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMLY model results): NA
If applicable, describe any mixing zones established in accordance with 1 SA NCAC 2B.0204(b): NA
Oxygen -Consuming Waste Limitations
Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
Page 4 of 11

(e.g., BOD= 30 mg/1 for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
Ifpermit limits are more stringent than TBELs, describe how limits were developed. Limitations for 0.9
MGD to Outfall 002 for BOD and NH3-N are based on a Streeter Phelps model (Level B) for
instream DO protection. No changes are proposed from the previous permit limits.
In 2005 a QUAL2E model was prepared for Rocky River and Mallard Creek applying a 1.2 MGD
discharge from this facility. The resulting limits are defined in Table 1.2 MGD and will be applied
to Outfall 002:
Table 2. 1.2 MGD
Effluent Characteristics
Monthly
Averse
Weekly
Average
Minimum Limit
BOD year round
10.0 m
15.0 m
NH3-N year round
4.0 m
12.0 m
DO, year round
1 6.0 m , daily avera e
Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/l (summer) and 1.8 mg/1(winter). Acute ammonia limits are derived from chronic criteria,
utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 ug/1) and capped at 28 ug/1(acute impacts). Due to analytical issues, all TRC values
reported below 50 ug/1 are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: There are no
proposed changes for the current 0.9 MGD flow.
Reasonable Potential Analysis RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below.
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero
background; 3) use of %z detection limit for "less than" values; and 4) stream flows used for dilution
consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of
dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
A reasonable potential analysis was conducted on effluent toxicant data collected between May 2013 and
November 2017. Pollutants of concern included toxicants with positive detections and associated water
quality standards/criteria. Based on this analysis, the following permitting actions are proposed for this
permit:
• Effluent Limit with Monitoring. The following parameters will receive a water quality -based
effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable
water quality standards/criteria: None
Page 5 of 12

Monitoring Only. The following parameters will receive a monitor -only requirement since they
did not demonstrate reasonable potential to exceed applicable water quality standards/criteria,
but the maximum predicted concentration was >50% of the allowable concentration: Bis(2-
ethylhexyl)phthalate and cyanide will be monitored quarterly for the emergency outfall
001. Though they didn't exhibit reasonable potential, copper and zinc will be monitored
quarterly based on BPJ due to stream impairments.
No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since
they did not demonstrate reasonable potential to exceed applicable water quality
standards/criteria and the maximum predicted concentration was <50% of the allowable
concentration: Total phenolic compounds.
POTW Effluent Pollutant Scan Review: The effluent pollutant data summarized in the renewal
application were evaluated for additional pollutants of concern.
o The following parameter(s) will receive a water quality -based effluent limit (WQBEL)
with monitoring, since as part of a limited data set, two samples exceeded the allowable
discharge concentration: None
o The following parameter(s) will receive a monitor -only requirement, since as part of a
limited data set, one sample exceeded the allowable discharge concentration: None
If applicable, attach a spreadsheet of the RPA results as well as a copy of the Dissolved Metals
Implementation Fact Sheet for freshwater/saltwater to this Fact Sheet. Include a printout of the RPA
Dissolved to Total Metal Calculator sheet if this is a Municipality with a Pretreatment Program.
Toxicity Testing Limitations
Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in
accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits
issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than
domestic waste) will contain appropriate WET limits and monitoring requirements, with several
exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in
NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test
failure.
Describe proposed toxicity test requirement: Will continue quarterly testing chronic WET limit at
4.6% effluent for 0.9 MGD and will add testing for a chronic Wet limit at 6.0% effluent
concentration for expansion to 1.2 MGD.
Mercury Statewide TMDL Evaluation
There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply
with EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a
wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and
industrial facilities with known mercury discharges. Given the small contribution of mercury from point
sources (^-2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source
control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (> 1 ng/1) will
receive an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a
pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed
the WQBEL value (based on the NC WQS of 12 ng/1) and/or if any individual value exceeds a TBEL
value of 47 ng/l
Describe proposed permit actions based on mercury evaluation: The single mercury analysis that was
submitted showed no detect but was not applicable as it did not use test Method 1631E. A special
Page 6 of 11

condition will be added to this permit that will require at a minimum that one effluent mercury
measurement using test method 1631E must be submit in conjunction with the next permit renewal.
If the facility expands prior to the next renewal multiple mercury measurement will be submitted as
part of the required effluent pollutant scans.
Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation
within this permit: NA.
Other W BEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: NA
If applicable, describe any special actions (HQW or ORYF9 this receiving stream and classification shall
comply with in order to protect the designated waterbody: NA
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with
15A NCAC 2H. 01 07(c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo: If applicable, describe any
water quality standards variances proposed in accordance with NCGS 143-215.3(e) and 15A NCAC
2B.0226 for this permit renewal: NA
7. Technology -Based Effluent Limitations (TBELs)
Municipals
Are concentration limits in the permit at least as stringent as secondary treatment requirements (30 mg/1
BOD51TSS for Monthly Average, and 45 mgq for BOD51TSS for Weekly Average). YES
If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA
Are 85% removal requirements for BOD51TSS included in the permit? YES
If NO, provide a justif cation (e.g., waste stabilization pond). NA
If any limits are based on best professional judgement (BPJ), describe development: NA
Document any TBELs that are more stringent than WQBELs: NA
Document any TBELs that are less stringent than previous permit: NA
8. Antidegradation Review (New/Expanding Discharge):
The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not
degrade water quality. Permitting actions for new or expanding discharges require an antidegradation
review in accordance with 15A NCAC 213.0201. Each applicant for a new/expanding NPDES permit
must document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105( c)(2). In all
cases, existing instream water uses and the level of water quality necessary to protect the existing use is
maintained and protected.
Page 7 of 11

If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results:
Based on the projected population growth in the facility's service area demand will exceed the
current 0.9 MGD capacity by 2026. The EAA to evaluate several alternatives as well as expansion
of the existing permitted facility to add 0.3 MGD capacity is summarized below:
Table 3. EAA summary results.
System
Description of Proposed System
Present Worth Cost
Land
Estimated will need 220 acres of land for a lagoon and irrigation area. The
$18.2 million
Application
current treatment works will be upgraded to meet the additional 0.3 MGD.
Reuse
Estimated the additional treatment, operating cost, and storage required for
$14 million
0.3MGD conjunctive reuse.
Expansion
Estimated the capital upgrades to expand the existing plant
$9.3 million
NPDES
Discharge
The Division concurred with the Permittee that the expansion of the existing facility was the best and
most economical approach.
9. Antibacksliding Review:
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): NO
If YES, confirm that antibacksliding provisions are not violated: NA
10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following
regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2)
NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance,
Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best
Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not
considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -
backsliding prohibitions would not be triggered by reductions in monitoring frequencies.
For instream monitoring, refer to Section 4.
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective
December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports
(DMRs) electronically. Effective December 21, 2020, NPDES regulated facilities will be required to
submit additional NPDES reports electronically. This permit contains the requirements for electronic
reporting, consistent with Federal requirements.
Page 8 of 11

12.Summary of Proposed Permitting Actions:
Table 4. Current Permit Conditions and Proposed Changes 0.9 MGD
Tara nete r
Cnxt""i Perm t
Propose4 C. hange
Basis for Conclition/Change'
Flow
MA 0.9 MGD
No change
15A NCAC 2B .0505
BODS
Summer:
No change
WQBEL. Based on protection of DO
MA 9.0 mg/l
standard. 15A NCAC 2B.0200
WA 13.5 mg/l
Winter:
MA 18.0 mg/l
WA 27.0 mg/l
NH3-N
Summer:
No change
WQBEL. Based on protection of
MA 3.0 mg/l
State WQ criteria. 15A NCAC
WA 9.0 mg/1
2B.0200
Winter:
MA 6.0 mg/1
WA 18.0 mg/l
TSS
MA 30.0 mg/1
No change
TBEL. Secondary treatment
WA 45.0 mg/l
standards/40 CFR 133 / 15A NCAC
2B .0406
Fecal coliform
MA 200 /100ml
No change
WQBEL. State WQ standard, 15A
WA 400 /100ml
NCAC 2B .0200
DO
> 5.0 mg/, daily average
No change
WQBEL. State WQ standard, 15A
NCAC 2B.0200
pH
6.0 - 9.0 SU
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200
Total Nitrogen
Monitor Only
No change
15A NCAC 2B .0500 et seq.
Total Phosphorus
Monitor Only
No change
15A NCAC 2B .0500 et seq.-
Conductivity
Monitor 3/week
Remove
Not required. The town lacks any
industrial dischargers.
Toxicity Test
Chronic limit, 4.6%
No change
WQBEL. No toxics in toxic
effluent
amounts. 15A NCAC 2B.0200 and
15A NCAC 2B.0500
Temperature
Monitor Only
No change
WQBEL. 15A NCAC 2B.0200 and
15A NCAC 2B.0500
Total Copper
2/Month Monitoring
Quarterly Monitoring
WQBEL. 15A NCAC 2B.0200, no
reasonable potential but receiving
Page 9 of 11

streams are impaired for this
parameter under old standard.
Total Zinc
Quarterly Monitoring
Quarterly Monitoring
WQBEL. 15A NCAC 2B.0200, no
reasonable potential but receiving
streams are impaired for this
parameter under old standard.
Cyanide
No requirement
Quarterly monitoring
WQBEL. 15A NCAC 2B.0200 and
reasonable potential to violate WQS
at emergency outfall 001
Bis(2-ethylhexyl)
No requirement
Quarterly Monitoring
WQBEL. EPA NRWQC and
reasonable potential to violate WQS
phthalate
at the emergency outfall 001 at
0.9MGD
Mercury
Different requirement
Add special condition
15A NCAC 2B .0500 et seq.
Electronic
No requirement
Add Electronic
In accordance with EPA Electronic
Reporting
Reporting Special
Reporting Rule 2015.
Condition
MGD — Million gallons per day, MA - Monthly Average, WA — Weekly Average, DM — Daily Max
Table 5. Proposed New Conditions for expansion 1.2 MGD
Parameter
Expansion. Permit
Proposed -Condition
'Basis for Condition
Flow
MA 1.2 MGD
New
15A NCAC 2B .0400 et seq., 02B
.0500 yet seq.
BOD5
Year round:
New
WQBEL. Based on protection of DO
MA 10.0 mg/l
standard. 15A NCAC 2B.0200,
WA 15.0 mg/l
limit based on QUAL2E Model
NH3-N
Year round:
New
WQBEL. Based on protection of
MA 4.0 mg/l
State WQ criteria. 15A NCAC
WA 12.0 mg/l
2B.0200, limit based on QUAL2E
Model
DO
> 6 mg/l, daily average
New
WQBEL. State WQ standard, 15A
NCAC 2B .0200, limit based on
QUAL2E Model
Toxicity Test
Chronic limit, 6.0%
New
15A NCAC 2B .0200 et seq., limit
effluent
based on IWC%
Effluent Pollutant
Provide 3 seasonal scans
New
40 CFR 122, G.S. 143.215(b)
Scan/21 Species
and 4 seasonal 2na
Tests
species test
MGD — Million gallons per day, MA - Monthly Average, WA — Weekly Average, DM — Daily Max
Page 10 of 11

13. Public Notice Schedule:
Permit to Public Notice: 05/02/2018
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days
following the publication date of the public notice. Any request for a public hearing shall be
submitted to the Director within the 30 days comment period indicating the interest of the party
filing such request and the reasons why a hearing is warranted.
14. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (YeslNo): NO
If Yes, list changes and their basis below: NA
15. Fact Sheet Attachments (if applicable):
• RPA Spreadsheet Summary
• Dissolved Metals Implementation/Freshwater or Saltwater
Page 11 of 11

Permit No.N00043532
NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards
The NC 2007-2015 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Commission (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft
permits out to public notice after April 6, 2016 must be calculated to protect the new standards - as
approved.
Table 1. NC Dissolved Metals Water Oualitv Standards/Aauatic Life Protection
Parameter
Acute FW, µg/l
(Dissolved)
Chronic FW, µg/l
(Dissolved)
Acute SW, µg/1
(Dissolved)
Chronic SW, µg/l
(Dissolved)
Arsenic
340
150
69
36
Beryllium
65
6.5
---
---
Cadmium
Calculation
Calculation
40
8.8
Chromium III
Calculation
Calculation
---
---
Chromium VI
16
11
1100
50
Copper
Calculation
Calculation
4.8
3.1
Lead
Calculation
Calculation
210
8.1
Nickel
Calculation
Calculation
74
8.2
Silver
Calculation
0.06
1.9
0.1
Zinc
Calculation
Calculation
1 90
81
Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. Calculation = Hardness dependent standard
3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life
standards for Mercury and selenium are still expressed as Total Recoverable Metals due to
bioaccumulative concerns (as are all human health standards for all metals). It is still necessary
to evaluate total recoverable aquatic life and human health standards listed in 15A NCAC
2B.0200 (e.g., arsenic at 10 µg/1 for human health protection; cyanide at 5 µg/L and fluoride at
1.8 mg/L for aquatic life protection).
Table 2. Dissolved Freshwater Standards for Hardness -Dependent Metals
The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)
Metal
NC Dissolved Standard, µg/I
Cadmium, Acute
WER* (I. 136672-[In hardness](0.041838)) - e^(0.9151 [In hardness]-3.1485)
Cadmium, Acute Trout waters
WER* { 1.136672-[In hardness](0.041838)) - e^ (0.915I [In hardness]-3.6236)
Cadmium, Chronic
VIER*{1.101672-[In hardness](0.041838)) - e^(0.7998[in hardness]-4.4451)
Chromium III, Acute
WER*0.316 • e^(0.8190[In hardness]+3.7256)
Chromium III, Chronic
WER*0.860 • e^ {0.8190[In hardness]+0.6848 )
Copper, Acute
WER*0.960 - e^{0.9422[In hardness]-1.700)
Copper, Chronic
WER*0.960 • e^{0.8545[In hardness]-1.702)
Lead, Acute
WER*{1.46203-[In hardness](0.145712)) • e^(1.273[In hardness]-1.460)
Lead, Chronic
WER* { 1.46203-[In hardness](0.145712)) - e^ (1.273 [In hardness] -4.705)
Nickel, Acute
WER*0.998 - e^(0.8460[In hardness]+2.255)
Nickel, Chronic
VIER*0.997 • e^(0.8460[In hardness]+0.0584)
Page 1 of 4

Permit No.N00043532
Silver, Acute
WER*0.85 - e^ (1.72[in hardness]-6.59 )
Silver, Chronic
Not applicable
Zinc, Acute
WER*0.978 • e^{0.8473[ln hardness]+0.884)
Zinc, Chronic
WER*0.986 - e^(0.8473[ln hardness]+0.884)
General Information on the Reasonable Potential Analysis (RPA)
The RPA process itself did not change as the result of the new metals standards. However, application of
the dissolved and hardness -dependent standards requires additional consideration in order to establish the
numeric standard for each metal of concern of each individual discharge.
The hardness -based standards require some knowledge of the effluent and instream (upstream) hardness
and so must be calculated case -by -case for each discharge.
Metals limits must be expressed as `total recoverable' metals in accordance with 40 CFR 122.45(c). The
discharge -specific standards must be converted to the equivalent total values for use in the RPA
calculations. We will generally rely on default translator values developed for each metal (more on that
below), but it is also possible to consider case -specific translators developed in accordance with
established methodology.
RPA Permitting Guidance/WOBELs for Hardness -Dependent Metals - Freshwater
The RPA is designed to predict the maximum likely effluent concentrations for each metal of concern,
based on recent effluent data, and calculate the allowable effluent concentrations, based on applicable
standards and the critical low -flow values for the receiving stream.
If the maximum predicted value is greater than the maximum allowed value (chronic or acute), the
discharge has reasonable potential to exceed the standard, which warrants a permit limit in most cases. If
monitoring for a particular pollutant indicates that the pollutant is not present (i.e. consistently below
detection level), then the Division may remove the monitoring requirement in the reissued permit.
1. To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the
following information:
• Critical low flow of the receiving stream, 7Q 10 (the spreadsheet automatically calculates
the 1 Q 10 using the formula 1 Q 10 = 0.843 (s7Q 10, cfs) 0.113
• Effluent hardness and upstream hardness, site -specific data is preferred
• Permitted flow
• Receiving stream classification
2. In order to establish the numeric standard for each hardness -dependent metal of concern and for
each individual discharge, the Permit Writer must first determine what effluent and instream
(upstream) hardness values to use in the equations.
The permit writer reviews DMR's, Effluent Pollutant Scans, and Toxicity Test results for any
hardness data and contacts the Permittee to see if any additional data is available for instream
hardness values, upstream of the discharge.
If no hardness data is available, the permit writer may choose to do an initial evaluation using a
default hardness of 25 mg/L (CaCO3 or (Ca + Mg)). Minimum and maximum limits on the
hardness value used for water quality calculations are 25 mg/L and 400 mg/L, respectively.
If the use of a default hardness value results in a hardness -dependent metal showing reasonable
potential, the permit writer contacts the Permittee and requests 5 site -specific effluent and
upstream hardness samples over a period of one week. The RPA is rerun using the new data.
Page 2 of 4

Permit No.N00043532
The overall hardness value used in the water quality calculations is calculated as follows:
Combined Hardness (chronic)
_ (Permitted Flow, cfs *Avg. Effluent Hardness, mg/L) + (s7Q 10. cfs *Avg. Upstream Hardness, mg/L)
(Permitted Flow, cfs + s7Q 10, cfs)
The Combined Hardness for acute is the same but the calculation uses the IQ 10 flow.
3. The permit writer converts the numeric standard for each metal of concern to a total recoverable
metal, using the EPA Default Partition Coefficients (DPCs) or site -specific translators, if any
have been developed using federally approved methodology.
EPA default partition coefficients or the "Fraction Dissolved" converts the value for
dissolved metal at laboratory conditions to total recoverable metal at in -stream
ambient conditions. This factor is calculated using the linear partition coefficients
found in The Metals Translator. Guidance for Calculating a Total Recoverable
Permit Limit from a Dissolved Criterion (EPA 823 B-96-007, June 1996) and the
equation:
C iss - 1
Ctow 1 + { V<W] [ss(l+a)] [10-6] }
Where:
ss = in -stream suspended solids concentration [mg/1], minimum of 10 mg/L used,
and
Kpo and a = constants that express the equilibrium relationship between dissolved
and adsorbed forms of metals. A list of constants used for each hardness -dependent
metal can also be found in the RPA program under a sheet labeled DPCs.
4. The numeric standard for each metal of concern is divided by the default partition coefficient (or
site -specific translator) to obtain a Total Recoverable Metal at ambient conditions.
In some cases, where an EPA default partition coefficient translator does not exist (ie. silver), the
dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to
obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is
dissolved to the same extent as it was during EPA's criteria development for metals. For more
information on conversion factors see the June, 1996 EPA Translator Guidance Document.
5. The RPA spreadsheet uses a mass balance equation to determine the total allowable concentration
(permit limits) for each pollutant using the following equation:
Ca = (s7Q 10 + Qw) (Cwgs) (s7Q 10) (Cb)
Qw
Where: Ca = allowable effluent concentration (µg/L or mg/L)
Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L)
Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L)
Qw = permitted effluent flow (cfs, match s7Q 10)
s7Q 10 = summer low flow used to protect aquatic life from chronic toxicity and human
health through the consumption of water, fish, and shellfish from noncarcinogens (cfs)
* Discussions are on -going with EPA on how best to address background concentrations
Flows other than s7Q 10 may be incorporated as applicable:
IQ 10 = used in the equation to protect aquatic life from acute toxicity
Page 3 of 4

Permit No.N00043532
QA = used in the equation to protect human health through the consumption of water,
fish, and shellfish from carcinogens
30Q2 = used in the equation to protect aesthetic quality
6. The permit writer enters the most recent 2-3 years of effluent data for each pollutant of concern.
Data entered must have been taken within four and one-half years prior to the date of the permit
application (40 CFR 122.21). The RPA spreadsheet estimates the 95th percentile upper
concentration of each pollutant. The Predicted Max concentrations are compared to the Total
allowable concentrations to determine if a permit limit is necessary. If the predicted max exceeds
the acute or chronic Total allowable concentrations, the discharge is considered to show
reasonable potential to violate the water quality standard, and a permit limit (Total allowable
concentration) is included in the permit in accordance with the U.S. EPA Technical Support
Document for Water Quality -Based Toxics Control published in 1991.
7. When appropriate, permit writers develop facility specific compliance schedules in accordance
with the EPA Headquarters Memo dated May 10, 2007 from James Hanlon to Alexis Strauss on
40 CFR 122.47 Compliance Schedule Requirements.
8. The Total Chromium NC WQS was removed and replaced with trivalent chromium and
hexavalent chromium Water Quality Standards. As a cost savings measure, total chromium data
results may be used as a conservative surrogate in cases where there are no analytical results
based on chromium III or VI. In these cases, the projected maximum concentration (95th %) for
total chromium will be compared against water quality standards for chromium III and
chromium VI.
9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge, are
inserted into all permits with facilities monitoring for hardness -dependent metals to ensure the
accuracy of the permit limits and to build a more robust hardness dataset.
10. Hardness and flow values used in the Reasonable Potential Analysis for this permit included:
Parameter
Value
Comments (Data Source)
Average Effluent Hardness (mg/L)
[Total as, CaCO3 or (Ca+Mg)]
156.8
Nov. 2017 Sampling
Average Upstream Hardness (mg/L)
[Total as, CaCO3 or (Ca+Mg)]
56.8/85.6
Nov. 2017 Sampling
7Q10 summer (cfs)
3.3/29
USGS
1 Q 10 (cfs)
2.8/23.9
Calculated
Permitted Flow (MGD)
0.9/1.2
1.2 expanded flow
Date: 4/3/ 18
Permit Writer: David Hill
Page 4 of 4

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
6. REQUIRED DATA ENTRY
Table 1. Project Information
❑CHECK IF HQW OR ORIN WQ$
Facility Name
West Stanly WWTP
WWTPIWTP Class
Class III
NPDES Permit
NCO043532
Outfall
002
Flow, Ow (MGD)
0.900
Receiving Stream
Rocky River
HUC Number
03040105
Stream Class
C
29.00
❑Apply WS Hardness WQC
7Q10s (cfs)
7Q10w (cfs)
51.00
30Q2 (cfs)
29.00
QA (cfs)
920.00
1 Q10s (cfs)
23.88
Effluent Hardness
156.8 mg/L (Avg)
Upstream Hardness
'--------------
85.6 mg/L. (Avg)
— — — — — — — — — -- ----'--___
Combined Hardness Chronic
88.87 m9/L
CombinedHardness Acute
89.53 m /L
Data Source(s)
❑01ECK TO APPLY MODEL
Par01
Par02
Par03
Par04
Par05
Par06111111
Part]
Perils
Par09
Part
Peril
Par12
Par13
Par14
Parts
Parts
Par17
Paris
Paris
Par20
Par21
Par22
Par23
Par24
Table 2. Parameters of Concern
Name wos Type Chronic Modifier Acute PQL Units
Arsenic
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HHANS
N/A
ug/L
Beryllium
Aquatc Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
1.5374
FW
9.8562
ug/L
Chlorides
Aquatic Life
NC
230
FW
ri
Chlorinated Phenolic Compounds
water supply
NC
1
A
ug/L
Total Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
332.6636
FW
2572.9786
ug/L
Chromium VI
Aquatic Life
INC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
23.2929
FW
34.8364
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
12.0318
FW
311.2693
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Hon,au Health
NC
2000
HH
ug/L
Nickel
Aq„auc Life
NC
108.8652
FW
986.3303
pg/L
Nickel
Water supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
2.6595
ug/L
Zino
Aquatic Life
NC
371.1828
FW
370.4935
ug/L
Bis(2,ethylexyl)phthalate
Human Health
C
0.37
HH
pg/L
RPA002_0-9mgd _IMPAIRED, input
4/3/2018

West Stanly WWTP a
NCO043532 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) = 0.90
W WTP/WTP Class: Class III
IQ IOS(efs)= 23.88
IWC% Q IQIOS = 5.519287834
7QIOS(cfs)= 29.00
IWC%Q7QIOS= 4.589570653
7QIOW(cfs)= 51.00
IWC%Q7QIOW= 2.662467793
30Q2 (cfs) = 29.00
IWC%@ 30Q2 = 4.589570653
Avg. Stream Flow, QA (cfs) = 920.00
IW%C Q QA = 0.151400865
Receiving Stream: Rocky River HUC 03040105
Stream Class: C
Outf3ll 002
Qw=0.9MGD
COMBINED HARDNESS (mPJL)
Acute — 89.53 mg/L
Chronic = 88.87 mg/L
PARAMETER
NC STANDARDS OR EPA CRITERIA
J
C
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
M
Applied
Chronic Acute
❑ # Det. Max Pred Cw Allowable Cw
Standard
Acute: NO WQS
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
1 1
52.7
Notr.n<9
C.V. (default)
_ __ _ _
Chronic: 6,536.E
_ ___ _ _ _
NO RP, Predicted Max<50%of Allowable Cw-No
Limited data vet
No value> Allowable Cw
Monitoring required
Acute: 631.2
Copper
NC
23.2929 FW(7QIOs) 34.8364
ug/L
41 36
14.56_
_ _ _
Chronic: 507.51824
_ _ _ _ _
NO RP, Predigedla 50%of Allowable Cw-BPJ
No value > Allowable Cw
Quarterly Monitoring required
Acute: 398.6
Cyanide
NC
5 FW(7QIOs) 22
10
ug/L
1 1
31.0
Note: n < 9
C.V.(default)
___ _ ______ _ _
Chronic: 108.9
_
No RP, Predicted Max <50%of Allowable Cw-No
Limited data set
No value> Allowable Cw
Monitoring required
Acute: 6,712.7
Zinc
NC
371.1828 FW(7QIOs) 370.4935
ug/L
10 10
109.1_
_ _ _
Chronic: 8087.5273E
_ ___ _ _ _
NO RP, Predicted Maz<50%of Allowable w-BPJ
No value > Allowable Cw
Quartery Monitoring required
Acute: NO WQS
Bis(2,ethyiezyl)phthalate
C
0.37 HH(Qavg)
ue I
I 1
45.88000
\"Ie:n<')
C.V. (default)
___
Chronic: 244.38434
_ _ _ _
NO RP, Predicted Max<50%of Allowable Cw-No
Limited d:nn
No value I Allowable Cw
Monitoring required
RPA002_0-9rtgd _IMPAIRED, rya
Page 3 of 3 43/2018

Freshwater RPA - 95% Probability/95% Confidence Usina Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑CHECK IF HQW OR ORW WQS
Facility Name
West Stanly WWTP
WWTP/WTP Class
Class III
NPDES Permit
NCO043532
Outfall
002
Flow, Qw (MGD)
1,200
Receiving Stream
Rocky River
HUC Number
03040105
Stream Class
C
29.00
❑Apply WS Hardness WQC
7010s (cfs)
7Q10w (cfs)
51.00
30Q2 (cfs)
29.00
QA (cfs)
920.00
23.88
1 Q10s (cfs)
Effluent Hardness
156.8 mg/L (Avg)
Upstream_ Hardness
_ _ _ _ _ _ 85.6 mg/L (Avg)
T
Combined Hardness Chronic
89.89 ri
.___________---
Combined Hardness Acute
________—,__. 9...______--
90.74 m /L _ _ _
2013 renewal/mod application DMR
Data Source(s)
❑CHECK TO APPLY MODEL
Pail
Par02
Pail
Par04
Par05
Par061111
Par07
Parts
Patti
Par10
Part 1
Part 2
Pari3
Par14
Par15
Par16
Par17
Parts
Par19
Pti
Pill
Par22
Par23
Par24
Table 2. Parameters of Concern
Name wQS Type Chronic Modifier Acute PQL Units
Arsenio
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Harnan Health
Water Supply
C
10
HH/WS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
1.5507
FW
9.9727
ug/L
Chlorides
Aquatic Life
NC
230
FW
mg/L
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
Total Phenolic Compounds
Aquatic Life
INC
300
A
ug/L
Chromium III
Aquatic Life
NC
335.7985
FW
2601.5472
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
23.5220
FW
35.2818
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
12.1833
FW
315.8870
ug/L
Mercury
Aquatic Lae
NC
12
FW
0.5
:1
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
109.9251
FW
997.6449
pg/L
Nickel
water supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
2.7219
ug/L
Zinc
Aquatic Life
NC
374.8022
FW
374.751
ug/L
Bis(2-ethylhexyl)phthalate
Human Health
C
0.37
HH
pg/L
RPA002_1-2mgd_I MPAI RED, input
4/3/2018

West Stanly WWTP a Outfall 002
NCO043532 Freshwater RPA- 95% Probability/95% Confidence Using Metal Translators Qw = 1.2 MGD
MAXIMUM DATA POINTS = 58
Qw (MGD) = 1.20
IQ10S(efs)= 23.88
7QIOS (cfs) = 29.00
7Q IOW (cfs)= 51.00
30Q2 (efs) = 29.00
Avg. Stream Flow, QA (cfs) = 920.00
Receiving Stream: Rocky River HUC 03040105
W WTP/WTP Class: Class III
IWC% @ IQIOS = 7.226107226
IWC%@7QIOS= 6.027219702
IWC%@7QIOW= 3.518728717
IWC%@3DQ2= 6.027219702
TW%C @ QA = 0.201765995
Stream Class: C
COMBINED HARDNESS (mg/L)
Acute = 90.74 mg/L
Chronic = 89.89 mg/L
PARAMETER
NC STANDARDS OR EPA CRITERIA
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
M
TYPE
Chronic Standard Acute
D p Let. Max Pred Cw Allowable Cw
Acute: NO WQS
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
1 1
52.7
n < 9
C.V.(default)
nc4_77.4
:
_ _ _e_
a_ _ %f_ w_oNNote:
, _ 5oA_b
Limited data set
No value> Allowable Cw
Monitoring required
Acute: 488.3
Copper
NC
23.5220 FW(7QIOs) 35.2818
ug/L
41 36
14.56
IMPAIRED
Chronic: 39026244
_
NO RP, Quarterly monitoring BPJ due to stream
No value > Allowable Cw
inpairment
Acute: 304.5
Cyanide
NC
5 FW(7QIOs) 22
10
ug/L
1 1
31.0
Note: n < 9
('.V.(default)
Chronic: 83.0
No RP, Predicted Max <50%of Allowable Cw-No
Limited data set
No value> Allowable Cw
Monitoring required
Acute: 5,186.1
Zinc
NC
374.8022 FW(7QIOs) 374.7502
ug/L
10 10
109.1
_ _ _
_ _ _ _ _
IMPAIRED
Chronic: 6218.49165
No RP, Quadedy monitoring BPJ due to stream
No value> Allowable Cw
Inpalrment
Acute: NO WQS
Bis(2-ethy1hexyl)phthaiate
C
0.37 HH(Qavg)
µg/L
1 1
45.88000
___ _ ____ _ _ _
_ ___ _ _ _ _ _ _ _ _ _
Note: n59
CV.(defaulU
Chronic: I83.38075
No RP, Predicted Max<50%of Aliowable Cw-No
Limited data set
No value > Allowable Cw
Monitoring required
RPA002_1-2nigd_IMPAIRED, rpa
Page 3 of 3 4r,1/2015

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTPIWTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
❑CHECK IF Hi OR ORIN WQS
West Stanly WWTP
Class III
NCO043532
001
0.900
Long Creek
03040105
C
3.30
5.80
183.00
❑Apply WS Hardness WQC
7CI10s (cfs)
7Q10w (cfs)
3042 (cfs)
CIA (cfs)
1 Q10s(cfs)
... ..,... .:. 2.76
Effluent Hardness
UpsVeam Hardness
�e______
Combined Hardness Chronic
.------------
Combined Hardness Acute
156.8 mg/L (Avg)
56.8 mg/L (Avg)
_,�.-.. _. _._.__. _.. _--_____
86.51 ni
9 ___-----
90.37 m /L
Data Source(s)
❑CHECK TO APPLY MODEL
Perot
Par02
Par03
Par04
P2r05
Pare6111111
Pri
Paris
Par09
Par10
Par11
Par12
Par13
Par14
Pads
Parts
Par17
Paris
Parts
Par20
Par21
Par22
Par23
Par24
Table 2. Parameters of Concern
Name wos Type Chronic Mcaieer Acute PQL Units
Arsenic
Agwcbc Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HHANS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
1.5066
FW
9.9371
ug/L
Chlorides
Aquatic Life
NC
230
FW
mg/L
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
Total Phenolic Compounds
Aquatic Life
NCI
300 1
A
I
I ug/L
Chromium III
Aquatic Life
NC
325.4251
FW
2592.8334
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
22.7644
FW
35.1459
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
11.6836
FW
314.4770
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
1
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
106.4192
FW
994.1934
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
2.7028
ug/L
Zinc
Aquatic Life
NC
362.8303
FW
373.4517
ug/L
Bis(2,ethylexyl)phthalate
Human Health
C
0.37
HH
pg/L
RPA001_0-9mgd _IMPAIRED, input
4/2/2018

West Stanly WWTP k Outfall 001
NCO043532 Freshwater RPA- 95% Probability/95% Confidence Using Metal Translators Qw = 0.9 MGD
MAXIMUM DATA POINTS = 58
Qw(MOD)= 0.90
1QIOS(cfs)= 2.76
7QIOS (cfs) = 3.30
7Q10W(cfs)= 5.80
30Q2 (cfs) = NO 30Q2 DATA
Avg. Stream Flow, QA lefts) = 183.00
Receiving Stream: Long Creek HUC 03040105
W WTP/WTP Class: Claw III
IWC% @ IQIOS = 33.57400722
IWC%@7QIOS= 29.71246006
IWC%@7QIOW= 19.38846421
IWC%@30Q2= NIA
IW%C@QA= 0.756528105
Stream Class: C
COMBINED HARDNESS (mg(L)
Acute = 90.37 mg/L
Chronic = 86.51 mgfL
PARAMETER
NC STANDARDS OR EPA CRITERIA
J
F
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
°'
z
Applied
Chronic Acute
n tt Det. Max Pred Cw Allowable Cw
Standard
Acute: NO WQS
Total Phenolic Compounds
NC
300 A(30Q2)
m, I.
I 1
52.7
Sote: a<9
C.V.(default)
__ _ ____
Chronic: fWC?
_ _ _ _ _ _
No RP, Pretlicled Max<SD%of Allowable Cw -No
Limited data set
Monitoring required
Acute: 104.7
Copper
NC
7644 1-N(7QIOs) 35.1459
ug/L
41 36
14.56......
_ _
_ ___ _ _ _ _ _
Chronic: 76.61553
_
No RP, Predicted Max<50%of Allowable Cw-BPJ
No value > Allowable Cw
Quarterly Monitoring required
Acute: 65.5
Cyanide
NC
5 FW(7QIOs) 22
10
ug/L
1 1
31.0
Note: n < 9
C.V.(default)
Chronic: 16___8
RP for Limited Dataset(n<8 samples) - apply
Limited data set
No value > Allowable Cw
Quarterly Monitoring
Acute: 1,112.3
Zinc
NC
362.8303 FW(7QIOs) 373.4517
uo I.
10 10
109.1
___ _
Chronic: 1221.13847
_ _
No RP, Predimed Max <50 % of Allowable Cw- BPJ
No value> Allowable Cw
Quarterly Monitoring required
Acute: NO WQS
Bis(2,ethylexyl)phthalate
C
0.37 HH(Qavg)
pg/L
1 1
45.88000
Note: n 5 9
C.V. (default)
___ _ ____ _ _ _
Chronic: 48.90763
_ _ _ _ ____
RP for Limited Damset (n<8 samples) - apply
Limited data set I
No value> Allowable Cw
Quarterly Monitoring
RPA001 0-9ngd _IMPAIRED, ma
Page 1 of 1 4/3/2018

& Par02
Data Data
1
2
3
4
5
5
7
5
9
10
11
12
13
14
15
15
17
19
19
20
20
21
22
23
24
25
25
27
25
29
30
30
31
32
33
34
35
35
37
35
39
40
40
41
42
43
44
45
45
47
45
49
50
51
52
53
54
55
55
57
56
REASONABLE POTENTIAL ANALYSIS
Amanlc
BDL-112ML Results
Std De,
Mean
C.V.
n
Mult Factor e
Max. Value
Max. Prod Cw
Vse"PASTE SPECIAL
ValY vs" than "COPY"
Ma%ITYm d..
F PaI^b � 6B
NO DATA
NO DATA
O
N/A
N/A ug/L
N/A ug/L
-4-
RPA001_O-gmgd _IMPAIRED. data
4/2/2013

REASONABLE POTENTIAL ANALYSIS
H1
I Effluent Hardness I
Data
Data
RDLv1/2DL
Results,
11/7/2017
164
164
Std Day.
11/8/2017
168
168
Mean
1/9/2017
168
168
C.V.(default)
11/14/2018
144
144
n
11/15/2017
140
140
10th Per value
Average Value
Max. Value
H2
Use "PASTE SPECIAL
Vn1uas'tM1en "COPY"
. Maximum tlnta
polnta v fi0
156.8000
0.6000
5
141.60 mg/L
156.80 mg/L
168.00 mg/L
Data Deter
11"1 017
11M8 017
1/9/2017
11/14/2018
11/15/2017
Hardness OOl
ODLe1/20L
Reaulas
56
56
Std Day.
56
56
Mean
s6
5B
C.V. (default)
56
56
n
60
60
1Mh Per value
Average Value
Max. Value
Use"PASTE SPECIAL
Val.". Ms. "COPY"
56.8000
0.8000
5
56.00 mg/L
56.80 mg/L
60.00 mg/L
RPA001_0-9mgd _IMPAIRED. data,
- 3 - 4/2/2018

REASONABLE POTENTIAL ANALYSIS
Pnr03
1
2
3
4
5
6
]
8
9
10
11
12
13
14
15
16
1]
16
19
20
21
22
23
24
25
26
2]
26
29
30
31
32
33
34
35
36
3]
39
39
40
41
42
43
44
45
46
4]
46
49
50
51
52
53
54
55
56
5]
56
Date Data BDL-1/2DL Results
Ste Day.
Mean
C.V.
n
Mult Factor e
Max. Value
Max. Prod Cw
a "PASTE 9PECIA(.
Pir04
values" iben "Copy"
. Maxlmum tlara
pOlnta � 6H
O DATA
1
ND DATA
2
NO DATA
3
O
4
5
N/A
6
N/A ug/L
]
N/A ug/L
6
Cadmium
Data Data BDL-1/201L Results
std De,
Mean
C.V.
In
Mult Factor
Max. Value
Max. Pred Cw
Use "PASTE SPECIA
Values' tM1an "C
Maxlmum
Ppints
NO DATA
Na DATA
NO DATA
O
N/A
N/A ug/L
N/A ug/L
5-
RPA001_O-9mgd _IMPAIRED. data
4/2/2018

REASONABLE POTENTIAL ANALYSIS
Par05
Chlorides
Data Data
BOL-1/2DL Results
1
Std DeY.
2
Mean
3
C.V.
4
n
5
6
Mult Factor
7
Max. Value
8
Max. Prad Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
2
28
29
30
31
32
33
34
35
36
3
368
39
40
41
42
43
44
45
46
4
468
49
50
51
52
53
54
55
56
5
58
USp "PASTE BPECIAL-
ValY ps' than "COPY" .
Maximum tlota polntc v
68
NO DATA
NO DATA
NO DATA
O
N/A
N/A mg/L
N/A mg/L
1
2
3
4
5
6
B
9
10
11
12
13
14
15
16
1
18
19
20
21
22
23
24
25
26
2
28
29
30
31
32
33
34
35
36
3
36
39
40
41
42
43
44
45
46
4
46
49
50
51
52
53
54
55
56
5
58
Chlorinated Phenolic Compounds
Data Data BDL-1/2DL Ras.Ns
std D.Y.
Moan
C.V.
n
Mutt Factor =
Max. Vacua
Max. Pred Cw
xlmamk
points m 6
NO DATA
NO DATA
O
N/A
N/A
N/A
RPA001_0-9mgd _IMPAIRED. data
6- 4/2/2018

REASONABLE POTENTIAL ANALYSIS
'E CIAL
Par07
ANTE HPE CIA
Par08
Total Phent llc COmPOundo
.•• roan "DOPY••
-. m.amam mt.
..oPY
mta
a
Pointe m $g
D
1 5/30/20/2013
Data BDL-t/2DL Result
8.5 8.5 Std Day.
N/A
1
2
Mean
.5000
2
3
C.V. (default)
0.6000
3
4
n
1
1
4
5
5
6
Mutt Factor s
6
8
ug/L
]
Max. Vacua
8.5 ug/L
8.5
]
ug/L
8
Mex. Pretl Cw
529 ug/L
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
18
18
1]
1]
15
19
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
25
2]
2]
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
35
38
3]
3]
38
39
39
39
40
40
41
41
42
42
43
43
44
44
45
45
45
48
4]
4]
45
49
49
49
50
50
51
51
52
52
53
53
54
54
55
55
55
55
5]
5]
58
58
Chromium III
Data Data 001-=1/2DL Results
Std Da,
Mean
C.V.
n
Mutt Factor m
Max. Value
Max. Prod Cw
Use"PASTE Hr
Values" then
. Msxlmum'
Points
NO DATA
NO DATA
NO DATA
O
N/A
N/A
N/A
RPA001_0-9M9d _IMPAIRED, data
- ] - 4/2/2018

Par09
Dam Data
1
2
3
4
5
6
pg/L 7
pg/L 6
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
40
49
50
51
52
53
54
55
56
57
SB
REASONABLE POTENTIAL ANALYSIS
Chromium V1
SDL-1/20L Results
Sid Dev.
Mean
C.V.
n
Mutt Factor
Max. Vacua
Max. Prod Ow
Use"PASYR SPECIAL Par-10
Values" tM1an "COPY^
. Maximum tlaG
paints 68
Dam Data
NO DATA 1
NO DATA 2
NO DATA 3
O 4
5
N/A 6
N/A g/L 7
p
N/A g/L 6
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
36
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
SB
omium, Total
BDLv1/20L Resulm
=A
Std De,
Moan
NO DATA
C.V.
NO DATA
n
0
Mutt Factor a.
N/A
Max. Value
N/A
Max. Prod Cw
N/A
-B-
RPA001_O-9mgd _IMPAIRED, data
42/ 01B

REASONABLE POTENTIAL ANALYSIS
ug/L
Hg/L
Pa11
1
2
3
4
5
6
8
9
10
11
12
13
14
15
16
17
19
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47.
46
49
50
51
52
53
54
55
56
57
58
Data
Data
BDL=1/2DL
3/1/2016
10
5
3/15/2016
<
10
5
4/5/2016
10
10
4/19/2016
10
10
5/3/2016
13
13
5/17/2016
11
11
6/7/2016
11
11
6/21 /2016
<
10
5
7/5/2016
13
13
7/19/2016
10
10
8/2/2016
14
14
8/16/2016
11
11
9/6/2016
11
11
9/20/2016
14
14
10/4/2016
11
11
10/182016
13
13
'1'1/12016
<
10
5
11/15MOIS
12
12
12/6/2016
10
10
1220/2016
10
10
1/17/2017
10
10
11/312017
10
10
2/14/2017
10
10
3!l Oi7
10
10
3/21/2017
10
10
4/4/2017
10
10
4/18/2017
10
10
5/2/2017
10
10
5/16/2017
10
10
6/6/20117
10
10
6Y0/2017
10
10
7/3/2017
10
10
7/18MOl7
10
10
8/82017
c
10
5
8/22/2017
10
10
9/52017
10
10
6/19/2017
10
10
10/3/2017
10
10
10/17/2017
10
10
11/7/2017
10
10
11 /20/2017
10
10
Ufs ^PA8TE8PECIAL Pa rl2
vflYs1a.n -copv-
. Mi%Im Ym Gtl ita
p olnts= 8
Raeulte V
Std Da,
2.1954
Mae.
9.9756
C.V.
0.2202
n
41
Mult Factor=
1.04
Max. Value
14.00 ug/L
Me.. Prad Cw
14.56 ug/L
Data Data
5/30/2013
Cyanide,
ypl h.Ym.<
Mfiltm
p Olnb
B OL-1/2DL
R.eulem
8 5
Stcl Day.
N/A
M.
Maan
5.00
C.V. (default)
0.6000
n
1
Mult Factor=
620
Max. Value
5.0
Max. Prod Cw
31.0
9-
RPA001_0-9mgd _IMPAIRED, data
4/ MO16

3
1
2
3
4
5
B
ug/L 7
ug/L 8
9
10
11
1
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
39
39
40
41
42
43
44
46
46
47
46
49
50
51
52
53
54
55
56
57
58
Date Data
REASONABLE POTENTIAL ANALYSIS
Fluoride
BDL-1/201L Results
Sid Da,
Mean
C.V.
n
Mult Factor w
Max. Value
Max. Prod Cw
UEs"PASTE SPECIAL P.,14
Val...' than "COPY"
. Maximum tlatn
p olo to v fiB
NO DATA
NO DATA 2
NO DATA 3
O 4
5
N/A 6
N/A ug/L 7
N/A ug/L 8
9
10
11
12
13
14
15
16
17
16
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
49
49
50
51
52
53
54
55
56
57
58
Lead
Date BDLm1/2DL Raaulta
std Dev.
Mean
C.V.
n
Mull Factor m
Max. Value
Max. Prod Cw
U.."PA8TE
V.m.. " m.l
NO DATA
NO DATA
O
N/A
N/A
N/A
to -
RPA001_O-9mgd _IMPAIRED, data
4M2 01 B

REASONABLE POTENTIAL ANALYSIS
Par15
'ECML
.^.oPY"
!Hb
8
Dam Dam
1
2
3
4
5
6
ug/L
ug/L
a
BOLe1/2DL Results
Std DeV
Mean
C.V.
n
MYIt Factor =
Max. Value
Max. Prod Cw
Usa"PASTE SPEOIAL Paf16
Yalu cs^ tY an ^COPY"
. Maxlm um tlata
p oln s = 66
■-. Dart Data
NO DATA 1
NO DATA 2
NO DATA 3
O 4
5
N/A 6
N/A ng/L 7
N/A ng/L 9
9
10
11
12
13
14
15
15
17
15
19
20
21
22
23
24
25
26
27
25
29
30
31
32
33
34
35
35
37
3E
39
40
41
42
43
44
45
45
47
49
49
50
51
52
53
54
55
55
57
56
BOLe11/20L Result
Std D.,
Mean
C.V.
n
Mult Factor —
Max. Value
Max. Prod Cw
Use "PASTE SF
VHIY e9^ tM1en ^
Maximums
Palnts
NO DATA
NO DATA
NO DATA
O
N/A
N/A
N/A
11 -
RPA001_O-9mgd _IMPAIRED, data
4/2/2015

REASONABLE POTENTIAL ANALYSIS
ug/L
ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
26
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
64
55
56
57
SH
7 a Par18
Data Data
Nickel
Y8. "PASTE SPE GIRL
vales^ tn.n •'tour•.
. Maximum tla
�
Selenium
Points = 66
BDL=1/2DL Results
Dale Data
BDL=111201L Result,
Sttl
NO DATA -
1
t DeD.,an
i
Men
NO DATA
2
M
Mean
C.V.
NO DATA
3
C.V.
n
O
4
n
5
Malt Factor =
N/A
6
Malt Factor
Max. Value
N/A Ng/L
7
Max. Value
Max. Pretl Cw
N/A 1/g/L
8
Max. Pratl Cw
9
10
11
12
13
14
15
16
17
16
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
46
49
50
51
52
53
54
55
56
57
58
RPA001_O-9mgd _IMPAIRED, data
-12- 4/2/2016

REASONABLE POTENTIAL ANALYSIS
Us. -PASTE SPECIAL Paf20
Valua✓' Ih-n "COPY'
. Maximum dau
Pelnb 88
Data Dam
NO DATA 1
NO DATA 2
NO DATA 3
O 4
5
N/A 6
N/A ug/L 7
N/A ug/L 8
9
10
11
12
13
14
15
16
17
16
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Silver
Use"PASTE SPECIAL
VOluen"tnen"COPY"Zinc
. Maximum data
Pa r21
Polnra - 6S
BDL=1/20L Resulte
Date
Data
BDL=1/2DL
Results
Sid Dev.
NO DATA
1
1/10/2013
58.6
58.6
Std D.,
Mean
NO DATA
2
4/3/2013
74.9
74.9
Mae.
C.V.
NO DATA
3
7M4/2013
28.7
28.7
C.V.
n
0
4
10/16/20113
61.1
61.1
n
5
1 /8/2014
49
49
Mult Factor =
N/A
6
4/11/20114
37
37
Mult Factor =
Max. Value
N/A ug/L
7
7/2 014
45
45
Max. Value
Max. Pred Cw
N/A ug/L
a
10/2/2014
54
54
Max. Prad Cw
9
4n/ 015
54
54
10
7/8/2015
62
82
11
12
13
14
15
16
17
16
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
36
39
40
41
42
43
44
45
46
47
46
49
50
51
52
53
54
55
56
57
58
RPA001_0-9mgd _IMPAIRED, data
_13- 4/2/2018

REASONABLE POTENTIAL ANALYSIS
Use "PASTE SPECIAL Par22
VHlu es" lM1an "COPY"
C Mexlmum data
points = 68
6.0749
1
4.4300
2
0.2953
3
10
4
5
1.33
6
82.0 ug/L
7
109.1 ug/L
6
9
10
11
12
13
14
15
16
17
16
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
46
49
50
51
52
53
54
55
58
57
SB
Data Data ODU-1/2DL Reeulto
5/30/2013 7.4 7.4 Std D.,
Mean
C.V. (defeul0
n
Mult Factor e
Max. Value
Max. Prod Cw
Par23
Use"PASTE SPECIAL
Valu as" Lien "COPY"
. Maximum da to
pnln s v 60
Data
N/A
1
.4000
2
0.6000
3
1
1
4
5
6.
6
7.0000 00 g/L
7
45.88HB0000 pg/L
B
n
Data BDL-1/2DL
14-
RPA001_O-9mgd _IMPAIRED. date
4/2/2018

REASONABLE POTENTIAL ANALYSIS
Vfv"PAHTE SPECIAL
Vws' than "COPY-
P3f24
""
Ma%Imum data
,Ihh. w 68
Rao. lta
Std Day.
NO
DATA
1
Mean
NO
DATA
2
C.V.
NO
DATA
3
n
0
4
5
Mull FaMor =
N/A
6
Max. Value
N/A
7
Max. Prod Cw
N/A
6
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
48
47
48
49
50
51
52
53
54
55
56
57
56
0
Oat¢ Data BOL-1/2DL RQEulta
Std De,
Mean
C.V.
n
Mult Factor -
Max. Value
Max. Prod Cw
USe"PA8TE3
Vvluws" In —
NO DATA
NO DATA
NO DATA
O
N/A
N/A
N/A
Par26
oats Oata
0
BOL-1/20L
-15-
RPA001_0-9mgd _IMPAIRED, data
4/2/2018

REASONABLE POTENTIAL ANALYSIS
Use "PA STE SPECIAL
ValuaS" tM1an "COPY"
. Maximum tlata
polo s 6B
R.s
Stcl o D
NO DATA
Mo .
Mean
NO DATA
C.V.
NO DATA
n
O
Mull Factor =
N/A
Max. Value
N/A
Max. Prod Cw
N/A
16-
RPA001_O-9mgd _IMPAIRED, data
4/2 018

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
04/03/18 Page:
1 of 9
Permit:
Facility Name:
nc0043532
o/
MRs Between 1
Param Name o /o
- 2014 and 4 - 2018
Region:
County:
%
%
Violation
Category:Limit
Subbasin:%
Violation
Program Category:
Violation Action: %
'I
Major Minor:
%
PERMIT: NCO043532
FACILITY: Stanly County -West Stanly WWTP
COUNTY: Stanly
REGION: Mooresville
Limit Violation
MONITORING
REPORT
11 _2015
OUTFALL/
PPI
001
LOCATION
Effluent
PARAMETER
BOD, 5-Day (20 Deg. C) -
VIOLATION
DATE
11107/15
FREQUENCY
3 X week
UNIT OF
MEASURE
mg/I
LIMIT
27
CALCULATED
VALUE
40
%
Over
48.1
VIOLATION TYPE
Weekly Average
Exceeded
VIOLATION ACTION
Proceed to
Enforcement Case
11 _ 2015
001
Effluent
Concentration
BOD, 5-Day (20 Deg. C) -
11/30/15
3 X week
mgA
18
31
72.2
Monthly Average
Exceeded
Proceed to
Enforcement Case
11_2015
001
Effluent
Concentration
Chlorine, Total Residual
11/03/15
3Xweek
mg/I
28
42
50
Daixceeddleedum
No Action, BPJ
11 _2015
001
Effluent
Coliform, Fecal MF, MFC
11/07115
3 X week
#/100ml
400
1,500
275
Weekly Geometric Mean
Exceeded
Proceed to
Enforcement Case
11.2015
11-2015
001
001
Effluent
Effluent
Broth, 44.5 C
Coliform, Fecal MF, MFC
Broth, 44.5 C
Coliform, Fecal MF, MFC
11l14/15
11/30/15
3Xweek
3Xweek
#/100m1
#/t00m1
400
200
6,000
3,000
1,400
1,400
Weekly Geometric Mean
Exceeded
Monthly Geometric Mean
Exceeded
Proceed to
Enforcement Case
Proceed to
Enforcement Case
11 _2015
001
Effluent
Broth, 44.5 C
Nitrogen, Ammonia Total (as
11/30/15
3 X week
mgA
6
8.3
38.3
MonthlyExceeded Average
EnforcemeProceent to
11 _2015
001
Effluent
N) - Concentration
Solids, Total Suspended -
11/07/15
3 X week
Mon
45
10B
140
Weekly Average
Exceeded
Penalty Retracted
11-2015
001
Effluent
Concentration
Solids, Total Suspended-
11/30115
3Xweek
mg/I
30
70.5
135
Monthly Average
Exceeded
Proceed to
Enforcement Case
06-2015
002
Effluent
Concentration
BOD, 5-Day(20 Deg. C)-
06/06/15
3Xweek
mg/I
13.5
17.63
30.6
Weekly Average
Exceeded
Proceed to
Enforcement Case
06-2015
002
Effluent
Concentration
BOD, 5-Day (20 Deg. C) -
06/30/15
3 X week
mg/I
9
9.02
0.2
Monthly Average
No Action, BPJ
ConcentrationExceeded
10.2015
002
Effluent
BOD, 5-Day (20 Deg. C) -
10/03/15
3 X week
mg/I
13.5
18.93
40.2
Weekly Average
Exceeded
Proceed to
Enforcement Case
11 _20%
11 _ 2015
002
002
Effluent
Effluent
Concentration
BOD, 5-Day (20 Deg. C)-
Concentration
BOD, 5-Day (20 Deg. C) -
11/21/15
11/30115
3 X week
3 X week
Mon
mg/I
27
18
37
20.55
37.0
14.2
Weekly Average
Exceeded
Monthly Average
Exceeded
Proceed to
Enforcement Case
Penalty Retracted
12-2015
002
Effluent
Concentration
BOD, 5-Day (20 Deg. C)-
12126/15
3 X week
mg/I
27
50
85.2
Weekly Average
Exceeded
Proceed to
Enforcement Case
Concentration

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
04/03/18 Page: 2 of 9
Permit: nc0043532
MRS Between 1 - 2014 and 4 - 2018 Region: %
Violation Category:Limit Violation
Program Category:
Facility Name: %
Param Name %
County: %
Subbasin:^/
Violation Action: %
Major Minor: %
PERMIT: NCO043532
FACILITY:
Stanly County -West Stanly W WTP
COUNTY: Stanly
REGION: Mooresville
Limit Violation
MONITORING OUTFALL/
LOCATON
VIOLATION
PARAMETER FREQUENCY
UNIT OF CALCULATED %
LIMIT
VIOLATION TYPE VIOLATION ACTION
REPORT PPI
DATE
MEASURE VALUE Over
01 _ 2016
002
Effluent
BOD, 5-Day (20 Deg.
C) -
01/09/16
3 X week
mgA
27
78.7
191.5
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
01-2016
002
Effluent
BOD, 5-Day (20 Deg.
C)-
01/30/16
3 X week
mgA
27
30.07
11.4
Weekly Average
No Action, BPJ
Concentration
Exceeded
01-2016
002
Effluent
SOD, 5-Day (20 Deg.
C) -
01/31/16
3 X week
mg/I
18
30.42
69.0
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
02-2016
002
Effluent
BOD, 5-Day (20 Deg.
C)-
02/20/16
3 X week
mgA
27
186.13
589A
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
02-2016
002
Effluent
BOD, 5-Day (20 Deg.
C)-
02/27/16
3 X week
mgA
27
33
22.2
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
02-2016
002
Effluent
BOD, 5-Day (20 Deg.
C)-
02/29/16
3 X week
mgA
18
61.38
241.0
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
05 - 2016
002
Effluent
BOD, 5-Day (20 Deg.
C) -
05/21/16
3 X week
mgA
13.5
18.93
40.2
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
05-2016
002
Effluent
BOD, 5-Day (20 Deg.
C) -
05/31/16
3 X week
mg/I
9
11.11
23.4
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
08_2016
002
Effluent
BOD, 5-Day (20 Deg.
C) -
08/13/16
3 X week
mg/I
13.5
19.67
45.7
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
04-2017
002
Effluent
BOD, 5-Day (20 Deg.
C)-
04/29/17
3 X week
mg/I
13.5
31
129.6
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
04_2017
002
Effluent
BOD, 5-Day (20 Deg.
C)-
04/30/17
3Xweek
mgA
9
10.97
21.9
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
05-2017
002
Effluent
BOD, 5-Day (20 Deg-
C) -
05/27/17
3 X week
mgA
13.5
27.33
102.5
Weekly Average
Proceed to NOV
Concentration
Exceeded
01-2018
002
Effluent
SOD, 5-Day (20 Deg.
C)-
01/06/18
3 X week
mgA
27
29.33
8.6
Weekly Average
None
Concentration
Exceeded
01-2018
002
Effluent
SOD, 5-Day (20 Deg.
C)-
01/13/18
3 X week
mg/I
27
74.67
176.5
Weekly Average
None
Concentration
Exceeded
01-2018
002
Effluent
SOD, 5-Day (20 Deg.
C) -
01/27/18
3 X week
mgA
27
32
18.5
Weekly Average
None
Concentration
Exceeded
01-2018
002
Effluent
BOD, 5-Day (20 Deg.
C)-
01/31/18
3 X week
mgA
18
38.36
113.1
Monthly Average
None
Concentration
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Permit: nc0043532 MRS Between 1 - 2014 and 4 - 2018
Facility Name: % Parent Name %
Major Minor: %
Region:
County:
%
%
Report Date:
Violation Category:Limit Violation
Subbasin: %
04/03/18 Page:
Program Category: %
Violation Action: %
6 of 9
xi
PERMIT: NCO043532
FACILITY:
Stanly County -West Stanly WWTP
COUNTY: Stanly
REGION: Mooresville
Limit Violation
MONITORING
REPORT
10-2017
OUTFALL/
PPI
002
LOCATION
Effluent
PARAMETER
Chlorine, Total Residual
VIOLATION
DATE
10124/17
FREQUENCY
3 X week
UNIT OF
MEASURE
ugA
LIMIT
28
CALCULATED
VALUE
29
%
Over
3.6
VIOLATION TYPE
Daily Maximum
Exceeded
VIOLATION ACTION
No Action, BPJ
01-2018
002
Effluent
Chlorine, Total Residual
01/08/18
3 X week
ugA
28
38
35.7
Daily Maximum
Exceeded
No Action, BPJ
01-2018
002
Effluent
Chlorine, Total Residual
01/11/18
3 X week
ug/l
28
37
32.1
Daily Maximum
Exceeded
No Action, BPJ
01 _2018
002
Effluent
Chlorine, Total Residual
01/18/18
3 X week
ugA
28
31
10.7
Daily Maximum
Exceeded
No Action, BPJ
01 _2018
002
Effluent
Chlorine, Total Residual
01/19/18
3 X week
ugA
28
42
50
Daily Maximum
Exceeded
No Action, BPJ
01 _2018
002
Effluent
Chlorine, Total Residual
01/23/18
3 X week
ugA
28
30
7.1
Daily Maximum
Exceeded
No Action, BPJ
01.2018
002
Effluent
Chlorine, Total Residual
01/30/18
3 X week
ugA
28
30
7.1
Daily Maximum
Exceeded
No Action, BPJ
02 _2018
002
Effluent
Chlorine, Total Residual
02/06/18
3 X week
ug/l
28
45
60.7
Daily Maximum
Exceeded
No Action, BPJ
02 _2018
002
Effluent
Chlorine, Total Residual
02/08118
3 X week
ug/l
28
30
7.1
Daily Maximum
Exceeded
No Action, BPJ
02-2018
002
Effluent
Chlorine, Total Residual
02/09/18
3 X week
ugA
28
38
35.7
Daily Maximum
Exceeded
No Action, BPJ
10-2015
002
Effluent
Coliform, Fecal MF, MFC
Broth, 44.5 C
10/10/15
3 X week
#/100ml
400
452A2
13.0
Weekly Geometric Mean
Exceeded
Proceed to
Enforcement Case
11 _2015
11 _2015
002
002
Effluent
Effluent
Coliform, Fecal MF, MFC
Broth, 44.5 C
Coliform, Fecal MF, MFC
Broth, 44.5 C
11/14/15
11/30/15
3 X week
3 X week
#/100ml
#/100ml
400
200
1,188.78
215.45
197.2
7.7
Weekly Geometric Mean
Exceeded
Monthly Geometric Mean
Exceeded
Proceed to
Enforcement Case
Penalty Retracted
12_2015
002
Effluent
Coliform, Fecal MF, MFC
Broth, 44.5 C
12/26/15
3 X week
#/100ml
400
762.89
90.7
Weekly Geometric Mean
Exceeded
Proceed to
Enforcement Case
01 -2016
01 .2016
002
002
Effluent
Effluent
Coliform, Fecal MF, MFC
Broth, al C
Coliform, Fecal MF, MFC
Broth, 44.5 C
01/02/16
01/09/16
3 X week
3 X week
W100ml
#/100ml
400
400
1,200.23
458.31
200.1
14.6
Weekly Geometric Mean
Exceeded
Weekly Geometric Mean
Exceeded
Proceed to
Enforcement Case
No Action, BPJ

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
04/03/18 Page:
7 of 9
Permit.
nc0043532
MRS Between
1 - 2014 and 4 - 2018
Region:
%
Violation Category:Limit
Violation
Program Category: e/
Facility Name:
%
Param Name
%
County:
%
Subbasin:%
Violation Action: %e
Major Minor:
%,
PERMIT: NCO043532
FACILITY: Stanly County -West Stanly WWTP
COUNTY: Stanly
REGION: Mooresville
Limit Violation
MONITORING
OUTFAW
LOCATION
PARAMETER
VIOLATION
FREQUENCY
UNIT OF
LIMIT
CALCULATED
%
VIOLATION TYPE
VIOLATION ACTION
REPORT
PPI
DATE
MEASURE
VALUE
Over
02.2016
002
Effluent
Coliform, Fecal MF, MFC
02/27/16
3 X week
#/100ml
400
600
50.0
Weekly Geometric Mean
Proceed to
Broth, 44.5 C
Exceeded
Enforcement Case
11-2016
002
Effluent
Coliform, Fecal MF, MFC
11/26/16
3 X week
#/loom]
400
1,487.22
271.8
Weekly Geometric Mean
Proceed to NOV
Broth, 44.5 C
Exceeded
12.2016
002
Effluent
Coliform, Fecal MF, MFC
12/10/16
3 X week
#/100ml
400
3,065.24
666.3
Weekly Geometric Mean
Proceed to NOV
Broth, 44.5 C
Exceeded
04-2017
002
Effluent
Coliform, Fecal MF, MFC
04/29A7
3 X week
#/loom]
400
451.11
12.8
Weekly Geometric Mean
Proceed to
Broth, 44.5 C
Exceeded
Enforcement Case
05-2017
002
Effluent
Coliform, Fecal MF, MFC
05/27/17
3 X week
#/t00ml
400
2,030.47
407.6
Weekly Geometric Mean
Proceed to NOV
Broth, 44.5 C
Exceeded
12-2017
002
Effluent
Coliform, Fecal MF, MFC
12/02/17
3 X week
9/100ml
400
990.58
147.6
Weekly Geometric Mean
None
Broth, 44.5 C
Exceeded
12-2017
002
Effluent
Coliform, Fecal MF, MFC
12/09/17
3 X week
#/100ml
400
610.98
52.7
Weekly Geometric Mean
None
Broth, 44.5 C
Exceeded
01-2018
002
Effluent
Coliform, Fecal MF, MFC
01/06/18
3 X week
#/100ml
400
477.54
19.4
Weekly Geometric Mean
None
Broth, 44.5 C
Exceeded
01-2018
002
Effluent
Coliform, Fecal MF, MFC
01/13/18
3 X week
#/100ml
400
467.69
16.9
Weekly Geometric Mean
None
Broth, 44.5 C
Exceeded
01-2018
002
Effluent
Coliform, Fecal MF, MFC
01/20/18
3 X week
#/100ml
400
3,513.8
778.4
Weekly Geometric Mean
None
Broth, 44.5 C
Exceeded
01-2018
002
Effluent
Coliform, Fecal MF, MFC
01/27/18
3 X week
#/100ml
400
1,326.02
231.5
Weekly Geometric Mean
None
Broth, 44.5 C
Exceeded
01-2018
002
Effluent
Coliform, Fecal MF, MFC
01/31/18
3 X week
#/100m1
200
812.48
306.2
Monthly Geometric Mean
None
Broth, 44.5 C
Exceeded
02-2018
002
Effluent
Coliform, Fecal MF, MFC
02/10/18
3 X week
#/100ml
400
762.87
90.7
Weekly Geometric Mean
None
Broth, 44.5 C
Exceeded
06.2015
002
Effluent
Nitrogen, Ammonia Total (as
06/06/15
3 X week
mg/I
9
17.67
96.3
Weekly Average
Proceed to
N)- Concentration
Exceeded
Enforcement Case
06-2015
002
Effluent
Nitrogen, Ammonia Total (as
06/13/15
3 X week
mg#
9
14.33
59.3
Weekly Average
Proceed to
N)- Concentration
Exceeded
Enforcement Case
06-2015
002
Effluent
Nitrogen, Ammonia Total (as
06/20/15
3Xweek
mg/I
9
10.9
21.1
Weekly Average
Proceed to ,
N)- Concentration
Exceeded
Enforcement Case

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
04/03/18 Page:
8 of 9 -
Permit:
nc0043532
MRS Between
1 - 2014 and 4 - 2018
Region:
%
Violation Calegory:Limit
Violation
Program Category:
Facility Name:
%
Param Name
%
County:
%
Subbasin:%
Violation Action: o/
Major Minor:
%
PERMIT: NCO043532
FACILITY: Stanly County -West Stanly W WTP
COUNTY: Stanly
REGION: Mooresville
Limit Violation
MONITORING
OUTFALL/
LOCATION
PARAMETER
VIOLATION
FREQUENCY
UNIT OF
LIMIT
CALCULATED
%
VIOLATION TYPE
VIOLATION ACTION
REPORT
PPI
DATE
MEASURE
VALUE
Over
06-2015
002
Effluent
Nitrogen, Ammonia Total (as
06/27115
3 X week
mg/I
9
10.3
14.4
Weekly Average
Proceed to
N)- Concentration
Exceeded
Enforcement Case
06-2015
002
Effluent
Nitrogen, Ammonia Total (as
06/30/15
3 X week
mgA
3
12.34
311.3
Monthly Average
Proceed to
N)- Concentration
Exceeded
Enforcement Case
02-2016
002
Effluent
Nitrogen, Ammonia Total (as
02/29/16
3Xweek
mgA
6
9.18
53.0
Monthly Average
Proceed to
N)- Concentration
Exceeded
Enforcement Case
04-2017
002
Effluent
Nitrogen, Ammonia Total (as
04/30/17
3 X week
mg/I
3
3.03
0.9
Monthly Average
Proceed to
N) - Concentration
Exceeded
Enforcement Case
01-2018
002
Effluent
Nitrogen, Ammonia Total (as
01/13/18
3 X week
mgA
18
30.55
69.7
Weekly Average
None
N) - Concentration
Exceeded
01-2018
002
Effluent
Nitrogen, Ammonia Total (as
01/31/18
3Xweek
mg/I
6
10.43
73.8
Monthly Average
None
N) - Concentration
Exceeded
06-2015
002
Effluent
Oxygen, Dissolved (DO)
06/16/15
3 X week
mg/I
5
4.81
3.8
Daily Minimum Not
Proceed to
Reached
Enforcement Case
10.2015
002
Effluent
Solids, Total Suspended -
10/03/15
3 X week
mg/I
45
70.17
55.9
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
11-2015
002
Effluent
Solids, Total Suspended -
11M7115
3 X week
mgn
45
50.67
12.6
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
11.2015
002
Effluent
Solids, Total Suspended -
11/21/15
3 X week
mg/I
45
60.57
34.6
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
11 _2015
002
Effluent
Solids, Total Suspended -
11/30/15
3 X week
mg/I
30
36.67
22.2
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
01-2016
002
Effluent
Solids, Total Suspended -
01/09/16
3 X week
mgA
45
330.1
633.6
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
01-2016
002
Effluent
Solids, Total Suspended -
01/30/16
3 X week
mg/I
45
56.23
25.0
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
01-2016
002
Effluent
Solids, Total Suspended -
01/31/16
3 X week
mgA
30
99.85
232.8
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
02-2016
002
Effluent
Solids, Total Suspended -
02/20/16
3 X week
mg/I
45
336.1
646.9
Weekly Average
Proceed to
Concentration
Exceeded
Enforcement Case
02-2016
002
Effluent
Solids, Total Suspended -
02/29/16
3 X week
mall
30
100.33
234.4
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case

MONITORING REPORT(MR) VIOLATIONS for:
Permit: nc0043532 MRs Between 1 - 2014 and 4 - 2018 Region: %
Facility Name: % Param Name % County: %
Major Minor: %
Report Date: 04/03/18 Page: 9 of 9
Violation Calegory:Limit Violation Program Category: /,
Subbasin:% Violation Action: %
PERMIT: NCO043532
FACILITY: Stanly County -West Stsnly W WTP
COUNTY: Stanly
REGION: Mooresville
Limit Violation
MONITORING OUTFALV
VIOLATION
LOCATION PARAMETER FREQUENCY
UNITOF
CALCULATED %
LIMIT
VIOLATION TYPE VIOLATION ACTION
REPORT PPI
DATE
MEASURE
VALUE Over
01.2018 002
Effluent Solids, Total Suspended - 01/13118 3 X week
mi
45 56.33 25.2
Weekly Average None
Concentration
Exceeded

AC Dd c-e3 -r, -32-
WEST STANLY WWTP
MR. DON ZUFALL
STANLY COUNTY UTILITIES
1000 N. FIRST ST., SUITE 12
ALBEMARLE ,NC 28001
ID#e 840 H
DATE COLLECTEDt 11/14/17
DATE REPORTED t 11/27/17
REVIEWED BY:
Effluent Upstream Upstream Analysis \lelhod
PARAMETERS 001 002 Date Analyst Code
Total Hardness, mg/l 144 56 84 11/20/17 KDS 2340C-11

Eg WD'To i[mm %
ID#: 840 H
WEST STANLY WWTP
MR. DON ZUFALL
STANLY COUNTY UTILITIES DATE COLLECTEDI 11/15/17
1000 N. FIRST ST., SUITE 12 DATE REPORTED : 11/27/17
ALBEMARLE ,NC 28001
REVIEWED EYt
Effluent Upstream Upstream Analysis hyelhod
PARAh1ETERS 001 002 Date Analyst Code
Total hardness, mg/l 140 60 88 11/20/17 %DS 2340C-11

EgowkwEama %
WEST STANLY WWTP
MR. DON 2UFALL
STANLY COUNTY UTILITIES
1000 N. FIRST ST., SUITS 12
ALBEMARLE ,NC 28001
PARAMETERS
Total Hardness) mg/1
ID#i 840 H
DATE COLLECTED: 11/07/17
DATE REPORTED 1 11/16/17
REVIEWED BY:
Effluent Upstream Upstream Analysis Method
001 002 Date Analyst Code
164 56 84 11/13/17 KDS 2340C-11

Tlnkiuy 'Aa tUS ID; 3J%3S
(may I, N.�u tewatci iD, 30
1, .;h�.-v T ;?"2 hu�i. ":rite..nb`F�"v L 7
i
P.O. BOX 7085, 11410AKMONT DRIVE PHONE r
GREENVILLE.`N.C. 27835.7085 FAX{25
ID#= 840 H
WEST STANLY WWTP
MR. DON ZUFALL
STANLY COUNTY UTILITIES DATE COLLECTED3 11/08/17
1000 N. FIRST ST., SUITE 12 DATE REPORTED f 11/16/17
ALBEMARLE ,NC 28001
REVIEWED BYt
Effluent Upstream Upstream Analysis Alethod
PARAAiETF.RS 001 002 Date Analyst Code
Total Hardness, mg/I 168 56 84 11/13/17 KDS 2340C-11

[INC
14 OAKMONT DRIVE 1-HUNL (z5Z) /Sa-ozuu
.C. 27835-7085 FAX [phone]
ID#: 840 H
WEST STANLY WWTP
MR. DON ZUFALL
STANLY COUNTY UTILITIES DATE COLLECTED: 11/09/17
1000 N. FIRST ST., SUITE 12 DATE REPORTED : 11/16/17
ALBEMARLE ,NC 28001
REVIEWED BY:
Effluent Upstream Upstream Analysis Mefhod
PARA114ETERS 001 002 Date Analyst Code
Total Hardness, mg/I 168 56 88 11/13/17 KDS 2340C-11

Stanly County Utilities
1000 N 1" Street Suite 12
ALBEMARLE, NORTH CAROLINA 28001
Phone [phone] Fax [phone]
October 21, 2014
1V1r. Ron Berry
NCDENR — Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Mr. Berry,
The County of Stanly is providing as required the NPDES application signature page for the
West Stanly WWTP (formerly Oakboro WWTP) NC0043532. Stanly County has purchased the
treatment facility and assumes responsibility for the associated permit renewal and permit
modification submitted by the Town of Oakboro.
Thank you for your time and efforts on our behalf. If you have any additional questions or
concerns regarding this matter please feel free to contact me.
Sincerely, RECEIVEDIDENRIDWR
lionlu�� OCT 2.4 2014
Donna Davis, Director Water Quality
permitting Section
Attachments: page 9 of EPA Form 23510-2A

FACILITY NAME AND PERMIT NUMBER:
Form Approved 1/14/99
West Stanly WWTP (formerly Oakboro WWTP) NCO043532
OMB Number 2040-0086
E ASIC APPLICATION:; INFORMATION
PART �C..CERTIFICATION
All applicants must core lets the Certitiication Section. Refer to instrvctions.'to doteimine:who isi6h of i*t forthe tir �oses�of this oertification: A[
applicants must complete aIl.ap0IicabI6 sections of Forrij 2A, as explsl ed.in tt a Application Overview �lndicate be ouV, ch arts;of Form 2A: ou; .
have completed anci'are submitting: By signing thls certification statement, applicants caritirmttat theyhave:reviewed Fcmi 24�6ntl have coinpEeted:
Fall sections that a l' to th'e facil' forwhich this a lication.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)
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.
1 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.
Name and official title Donna L Davis
Signature
Telephone number [phone]
Date signed 10/21/2014
Upon request of the permitting authority, you must submit any other information necessary to assess wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
EPA Form 3510-2A (Rev.1-99). Replaces EPA forms 7550-6 & 7550-22. Page 9 of 21

NH3/TRC WLA Calculations
Facility: W. Stanly VWIITP
PermitNo. NC0043532
Prepared By: David Hill
Enter Design Flow (MGD): 1.2
Enter s7Q10 (cfs): 29
Enter w7Q10 cfs : 51
Total Residual Chlorine (TRC)
Ammonia (Summer)
Daily Maximum Limit (ug/1)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
29
s7Q10 (CFS)
29
DESIGN FLOW (MGD)
1.2
DESIGN FLOW (MGD)
1.2
DESIGN FLOW (CFS)
1.86
DESIGN FLOW (CFS)
1.86
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
6.03
IWC (%)
6.03
Allowable Conc. (ug/I)
282
Allowable Conc. (mg/1)
13.2
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Fecal Coliform
w7010 (CFS)
51
Monthly Average Limit:
2001100ml
DESIGN FLOW (MGD)
1.2
(If DF >331; Monitor)
DESIGN FLOW (CFS)
1.86
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
16.59
Upstream Bkgd (mg/1)
0.22
Z% 9
IWC (%)
3.52
Allowable Conc. (mg/1)
45.1
s°(.0
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/l, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/l
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/1
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

NH3/TRC WLA Calculations
Facility: W. Stanly WWTP
PermitNo. NC0043532
Prepared By: David Hill
Enter Design Flow (MGD): 0.9
Enter s7Q10 (cfs): 3.3
Enter w7Q10 (cfs): 5.8
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/1)
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
3.3
s7Q10 (CFS)
3.3
DESIGN FLOW (MGD)
0.9
DESIGN FLOW (MGD)
0.9
DESIGN FLOW (CFS)
1.395
DESIGN FLOW (CFS)
1.395
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
29.71
IWC (%)
29.71
Allowable Conc. (ug/1)
57
Allowable Conc. (mg/1)
2.8
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
Fecal Coliform
w7Q10 (CFS)
5.8
Monthly Average Limit:
2001100mi DESIGN FLOW (MGD)
0.9
(If DF >331; Monitor)
DESIGN FLOW (CFS)
1.395
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
3.37 Upstream Bkgd (mg/1)
0.22
IWC (%)
19.39
Allowable Conc. (mg/1)
8.4
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

Final 2016 Category 5 Assessments-303(d) List
Enr6onmµe.n�tal Rocky River Subbasin Yadkin -Pee Dee River Basin
QW&Y
Assessment Unit Name Assessment Unit Description
Assessment Unit Number Water Quality Classification Length/Area Units
Rocky River
13-17b3
From Reedy Creek to Irish Buffalo Creek
C
3.2 FW Miles
Assessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Exceeding Criteria
> 10% and >90 conf
Turbidity (50 NTU, AL, FW miles)
5
Exceeding Criteria
Fair
Benthos (Nar, AL, FW)
5
Rocky River From the Irish Buffalo Creek to Hamby Branch
13-17c1 C 2.8 FW Miles
Assessment Criteria Status Reason for Rating Parameter of Interest IR Category
Exceeding Criteria > 10% and >90 conf Turbidity (50 NTU, AL, FW miles) 5
Exceeding Criteria > 10% and >90 conf Copper (7 jig/I, AL, FW) 5
Exceeding Criteria Fair Benthos (Nar, AL, FW) 5
Rocky River From Hamby Branch to Anderson Creek
13-17c2 C 5.9 FW Miles
Assessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Exceeding Criteria
> 10% and <90%conf
Copper (7 µg/I, AL, FW)
5e
Exceeding Criteria
> 10% and >90 conf
Turbidity (50 NTU, AL, FW miles)
5
Rocky River From Anderson Creek to Lanes Creek
13-176 C 34.9 FW Miles
Assessment Criteria Status Reason for Rating Parameter of Interest IR Category
Exceeding Criteria > 10% and <90%conf Copper (7 jig/I, AL, FW) 5e
Exceeding Criteria > 10% and <90%conf Zinc (50 µg/I, AL, FW) 5e
Exceeding Criteria > 10% and >90 conf Turbidity (50 NTU, AL, FW miles) 5
Rocky River From the Lanes Creek to the Pee Dee River
13-17d C 11.5 FW Miles
Assessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Exceeding Criteria
< 10%
Copper (7 lag/I, AL, FW)
5e
Exceeding Criteria
> 10% and >90 conf
Turbidity (50 NTU, AL, FW miles)
5
3/23/2018 Final 2016 NC Category 5 Assessments Page 194 of 196

N,r Final 2016 Category 5 Assessments-303(d) List
e h SAW Rocky River Subbasin Yadkin -Pee Dee River Basin
QW
Assessment Unit Name Assessment Unit Description
Assessment Unit Number Water Quality Classification Length/Area Units
Irish Buffalo Creek
13-17-9-(2)
From Kannapolis Water Supply Dam to Rocky River
G
16.7 FW Miles
Issessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Exceeding Criteria
> 10% and <90%conf
Copper (7 µg/I, AL, FW)
5e
Lanes Creek From source to Marshville Water Supply Dam (located 0.1 mile
downstream of Beaverdam Creek)
13-17-40-(1)
WS-V
27.4 FW Miles
Issessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Exceeding Criteria
Fair
Benthos (Nar, AL, FW)
5
Lanes Creek
13-17-40-(12)
From Marshville Water Supply Dam (located 0.1 mile downstream of
Beaverdam Creek) to Rocky River
L
Assessment Criteria Status Reason for Rating Parameter of Interest
Exceeding Criteria Fair Benthos (Nar, AL, FW)
27.1 FW Miles
IR Category
5
Little Richardson Creek (Lake Monr From source to a point 0.6 mile upstream of Buck Branch
13-17-36-4-(0.5) WS-IV 77.1 FW Acres
Issessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Data Inconclusive
> 10% and >90 conf N<30
Chlorophyll a (40 µg/I, AL, NC)
5
Little Richardson Creek (Lake Monr From a point 0.6 mile upstream of Buck Creek to Richardson Creek
13-17-36-4-(2) WS-IV;CA 38.7 FW Acres
Issessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Data Inconclusive
> 10%and >90 conf N<10
Chlorophyll a (40 jig/I, AL, NC)
5
Long Creek From Little Long Creek to Rocky River
13-17-31b
C
2.2 FW Miles
Issessment Criteria Status
Reason for Rating
Parameter of Interest
IR Category
Exceeding Criteria
> 10% and >90 conf
Copper (7 µg/I, AL, FW)
5
3/23/2018 Final 2016 NC Category 5 Assessments Page 191 of 196

Berry, Ron
From: Behm, Pamela
Sent: Tuesday, February 27, 2018 1:54 PM
To: Berry, Ron
Subject: RE: Assistance with NPDES renewal & expansion in Rocky River - Yadkin -Pee Dee River
Hi Ron,
There is no new data for these 2 segments, and both are still considered impaired. There has been new dissolved
copper data collected on the segment immediately below 13-176 (13-17d) on the Rocky that confirms the impairment
for copper for segment 13-17d, this will be reflected on the 2018 303(d) list. With Long Creek as category 5 and not 5e
for copper and zinc, we know that the impairment was confirmed when applying the new statistical methodology (we do
10% exceedance with 90% statistical confidence for 303(d) listing since 2014). When you see category 5e, that shows
the impairment was not confirmed with the new statistical methodology, but EPA did not allow NC to delist until new
dissolved data is collected and status verified.
Hope this helps,
Pam
From: Berry, Ron
Sent: Tuesday, February 27, 2018 11:26 AM
To: Behm, Pamela <[e-mail]>
Subject: Assistance with NPDES renewal & expansion in Rocky River - Yadkin -Pee Dee River
Pam,
We are currently developing a NPDES renewal and modification permit for West Stanly WWTP NC0043532. The facility
discharges to Rocky River AU 13-176 and has an emergency outfall that discharges to Long Creek AU 13-17-31b. Both
stream locations are listed on the 2014 303d list since 2008. Rocky River has an IR Category Se for Copper and Zinc and
Long Creek as a IR Category 5 for copper and zinc. Not sure if data is being collected to change the rating or if the data
collected previously meets our current water quality standard criteria. Need to determine how to apply 303d listing for
applying copper and zinc water quality standards. Any thoughts or additional information you can provide?
Thanks, Ron
Ron Berry
Engineer
Division of Water Resources/Complex Permitting
North Carolina Department of Environmental Quality
919 807 6396 office
ron.berrv()ncdenr.aov
512 N. Salisbury Street
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

EXPANSION West Stanly WWTP (formerly Oakboro WWTP) NC0043532
Received NPDES permit modification application from Town of Oakboro to expand existing facility from 0.9
MGD to 1.2 MGD (0.3 MGD increase) on July 2013. Ownership changed and NPDES permit re -issued to
Stanly County in March 2014. Stanly County has requested the previous expansion application to 1.2 MGD be
included in the current renewal process.
Flow Justification:
Consultant used historical growth in region for primary towns connected to WWTP, 1980 to present, to
determine population growth rate. Portion of service area (western part of county) is considered a potential
suburb of the Charlotte area. Projected annual increase in domestic wastewater by applying the historical
population growth rate and using per capita residential flow factor 70 gpm and commercial factor of 15 gpm.
Projected exceedance of 80% of 0.9 MGD in 2013 with predicted flow to reach 0.97 MGD by 2032. Annual
flow increase about 0.010 MGD per year.
Note: Checked DMR data in 2013 the highest monthly average flow reported was 0.682 MGD, so far in 2014
highest reported monthly average flow is 0.678 MGD.
EAA REVIEW
1) Connect to a regional or other existing WWTP — Stanly is the regional WWTP and should be expanded.
No other system connection warranted.
2) Land Application— Irrigation of 0.3 MGD
- 18 MG storage lagoon
- Purchase 220 acres
- 1,200 land application pump station
- Piping and irrigation system
- Plant current limits more stringent than 2T rules, capable to continue to meet 2T rules at
higher flows
3) Wastewater Reuse — Reuse 0.3 MGD
- New filters at WWTP to meet 2U rules
- 1.5 MG detention pond
- 9 MG storage basin
- 1,200 reclaimed water pump station
- 0.2 MG elevated storage tank
4) Re-rate/upgrade West Stanly WWTP — expand to 1.2 MGD apply limits as listed in 2005 spec letter for
1.2 MGD
- Existing plant basic design was for 1.2 MGD, minor changes
- New surface aerators
- New 0.18 MG Sludge Holding Tank
- New polymer feed system
COST COMPARISON
Land Application
Wastewater
Reuse
Expand existing
WWTP
Project Cost
$8,783,000
$4,064,000
$811,000
Annual O&M
$576,000
$606,000
$520,000
Present Worth
$9,409,343
$9,899,413
$8,494,546
Total Present Worth
$18,192,353
$13,963,413
$9,305,546
Re -rate/ upgrade existing Stanly WWTP best option

Date:12/16/15
EXISTING ROCKY RIVER LIMITS - 0.9 MGD
1) BOD (monthly avg limit)
Summer
9.0
mg/I x
0.9 MGD x 8.34
Ibs-I/MG-mg x 213
days
14,389
Ibs-Summer
Winter
18.0
mg/I x
0.9 MGD x 8.34
Ibs-I/MG-mg x 152
days
20,536
Ibs-Winter
Annual
34,925
Ibs/yr
2) NH3-N (monthly avg limit)
Summer
3.0
mg/I x
0.9 MGD x 8.34
Ibs-I/MG-mg x 213
days
4,796
Ibs-Summer
Toxicity
17.2
mg/I
limit more stringent than toxicity
Winter
6.0
mg/I x
0.9 MGD x 8.34
Ibs-I/MG-mg x 152
days
6,845
Ibs-Winter
Toxicity
> 35.0
mg/I
limit more stringent than toxicity
Annual
11,642
Ibs/yr
3) DO (daily avg minimum limit)
Annual 5.0 mg/I x 0.9 MGD x 8.34
Ibs-I/MG-mg x
365
days
13,698
Ibs/yr
WQS 5.0 mg/I limit = WQS
PROPOSED EXPANSION ROCKY RIVER LIMITS -1.2 MGD
1) BOD (monthly avg limit)
Annual 10.0 mg/I x 1.2 MGD x 8.34
Ibs-I/MG-mg x
365
days
36,529
Ibs/yr
2) NH3-N (monthly avg limit)
Annual 4.0 mg/I x 1.2 MGD x 8.34
Ibs-I/MG-mg x
365
days
14,612
Ibs/yr
Summer Toxicity 13.2 mg/I limit more stringent than toxicity
Winter Toxicity > 35.0 mg/I limit more stringent than toxicity
3) DO (daily avg minimum limit)
Annual 6.0 mg/I x 1.2 MGD x 8.34
Ibs-I/MG-mg x
365
days
21,918
Ibs/yr
WQS 5.0 mg/I limit more stringent than WQS
SUMMARY
Summer
Winter
% increase flow expansion 33.33% Annual
mg/I
mg/I
lbstyr
inc dec
inc dec
1) BOD % increase for expansion 4.59%
11.11
%
(44.44)
%
2) NH3-N % increase for expansion 25.51%
33.33
%
(33.33)
%
3) DO % increase for expansion 60.00%
20.00
%
20.00
%
Ratio of DO increase to (BOD + NH3-N) increase = 1.99

Date: 6/17/15
West Stanly WWTP - NCO043532
Flow History Predicted Demand
YEAR
ANNUAL AVERAGE (add 0.022 MGD each Vear after 2014)
DMR
2008
0.362
DMR
2009
0.399 Based on DMR 2008 and 2014, demand increased 0.022 MGD per year
DMR
2010
0.38
DMR
2011
0.394
DMR
2012
0.368
DMR
2013
0.488
DMR
2014
0.494
2015
0.516
2016
0.538
2017
0.56
2018
0.582
2019
0.604
2020
0.626
2021
0.648
2022
0.67
2023
0.692
80%
; 2gA,
e0y7;1
,�
2025
0.736
2026
0.758
2027
0.78
90%
2028
0.802
2029
0.824
2030
0.846
2031
0.868
100%
2032
0.89
2033
0.912
ANNUAL AVERAGE (add 0.022 MGD each
year after 2014)
0.6
0.5
0.4
0.3
0.2
0.1
0
2008 2009 2010 2011 2012 2013 2014

Date: 6/14/17 DMR Data for NPDES Permit NCO043532
pb:rdb West Stanly W WTP
• Fecal Coliform Wkly Geomean ■ Fecal Coliform Mhly Geomean
—Mhly Geomean Limit —Wkly Geomean Limit
3,500
---------------------------------------------------------------------
--------------
3,000
-----------------------------------------------------------------
0----------------
2,500
------------------------------------------------------------------------------------
E2,000
-----------------------------------------------------------------------------------♦
0
0
1,000
------------------------------------------------------------------------------------
' '
500
-------------
-- • - --------------------
o
'
ei
N N7 Vf Vf
e-I 'i rl
Vl N M Ln N N tlf N w w w to w w to w w w w w n n n n n
rl rl H �-i rl N ei rl rl rl rl 'i ei �-1 'i rl 'i e-I e-I ,-1 rl ei t-1 'i rl
c w n
w o w M w `m a m ? w o w M w M CL m
C�
LL G a
CCm o 0
C Q VI O z❑ I E Q Q N O z ❑ LL a
—•—pH Rdg —Range Limits
10.0
-----------------------
----------------- -----------------------------------
9.5
-------------------------------------------------------------------------------------
9.0
8.5
-------------------------------------------------------------------------------------
8.0
---------------------------
---------------------------------------------------------
tri
7.5------------------------
...------------------------------------------------------------
7.0
6.5
-----------
---------- —----------------------------------------------------
6.0
5.5
--------------
— ----- - -----------------------------------------------------------
5.0
to to to to ut
to to to vi vt to to w w w w w w to w w w to w n n n n n
N N a N
w O w A N M a m j 0 w O w N w M a m
LL a
.0
o
Q VI O z ❑ A LL i a E Q to z ❑ LL a
• DO Rdg —DO Daily Avg Limit
16
--------------------------------------------------------------------------
------------
•
-------------
12
•
•• w
♦ f �►
' '---------. ----
6
�* - ---- ------------- ♦ '
4
-------------------------------------------
-------------------------------------------
2
------------- — - — ----------------------------------------------
0
to
ei
to to vi to
•i •i 'i ei
to to to to to to to w w w w w w w w to to to w n r, n n n
ei ei e-I ei �-1 M rl ei �-1 ei ei rl rl H rl rl rl rl rl rl 'i rl M rl
c
.d
a C) o w a `m a m >>> w o o w w �- m
o z❑ LL 2 a g¢ o z❑ LL g a

Date: 6/14/17
Fb:rdb
DMR Data for NPDES Permit NCO043532
West Stanly W WTP
• NH3-NWeekly Avg ■ NH3-NMonthlyAvg —Weekly Avg Limit —Monthly Avg Max Limit
20 -------------------------------------------------------------------------
18 ------ ♦-------------- --------------------
16 ------- -------------------- ------------------------------------------
14 -------- ----- t------------- -----------* ---------------------- -------- ----
12------- ------ � ---------------------- •---------------------------------- ------
10------- -------♦--------------------- ---- ------------------- ---------------------
E
8 -------------- ------------•-------------------------------------------------•
• •
• ♦ • ■
2 • A-----------------s-•------f •--s--■ --- ---------- - i�-t----------
�
'o° oo�LL i a � o�w i a i < Z c,LL a
• TRC Rdg —TRC Daily Limit (50 µg/I COMPLIANT)
600 T__________________________________________
Soo I ----------------------------- ---------------------------------------------
•
n� 300
200---------------------------------
P------------------------------------------------------
10 VALUES ARE LESS THAN
100
--------------------------------------------------------------------------------------
r
0
Vf
N rl
M
rl
N
rl
N to
ei •i
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rl ei
0
�-1
N
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tD
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ei
tD tD to tD to tD tD w
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ROCKY RIVER
• Upstream Q8385000 X Downstream Q9120000
X
y xX
12 x x OX
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x••x i x
E 10 `x X • •'�X X • • �%
8 •
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(DIDiD(,DLOLDr� r� r� r�r �r oWWo00oWWMMrnrnrnrn000000v-i.-1rH.ir-l.�r-lcJn4c J(Nr.4 jMMMMmm
C i >— Q> C i? Q> C L T Q> C '- T Q> C i T Q> C '- T I1pa-' U_Q L C �No�41fv�4Jro�4Jt6�NtaA+-UL U
c9�6O�
0)=VcL=DuW
,72 Nz,22 Nz22 N,�2 Nz,22 Lnz,22'aooLLa,<0MLL<,Qoo

WEST STANLYWWTP-NCO043532 2015
W
Al
� Nit s aw1�4�r g •�,."''�� /�. .w, 1 9� -�-
i � ty � «y '1. � �•�� i
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Whole Effluent Toxicity Testing and Self Monitoring Summary
Norwood WWTP
NCO021628/001
County:
Stanly
Region:
MRO
Basin:
YAD14
Mar.un Sep Dec
SOC_JOC:
Ceri7dPF
Begin: 2/1/2009
chr lim: 2.7%
NonComp:
Single
7Q30:
42.0
PF: 0.75 IWC:
2.68 Freq: Q
I
F M
A
M
J
J
A
5
0
N
D
2014
-
- Pass
-
-
Pass
-
-
Pass
-
-
Pass
2015
-
- Pass
-
-
Pass
-
-
Pass
-
-
Pass
2016
-
- Pass
-
-
Pass
-
-
Pass
-
-
Pass
2017
-
- Pass
-
-
Pass
-
-
Pass
-
-
Pass
NW WTP Hood Creek-
Brunswick
NCO057533/001
County:
Brunswick
Region:
WIRO
Basin:
CPF17
Feb May Aug Nov
SOC_JOC:
Ceri7dPF
Begin: 3/1/2012
Chr Monit: 90%
NonComp:
7Q1O:
PF:
IWC:
Freq: Q
J
F M
A
M
1
l
A
5
0
N
D
2014
-
Fall -
-
Fail
-
-
Fail
-
-
Fail
-
2015
-
Pass -
-
Fail
-
-
Fail
-
-
Pass
-
2016
-
Pass -
-
Pass
-
-
Pass
-
-
Fail
-
2017
-
Fall -
-
Pass
-
-
Fail
-
-
Fail
-
2018
-
Fail -
-
-
-
-
-
-
-
-
-
Oakboro WWTP-001
NCO043532/001
County:
Stanly
Region:
MRO
Basin:
YAD13
Jan Apr Jul Oct
SOC_JOC:
Ceri7dPF
Begin: 4/1/2004
chr lim: 30%
NonComp:
Single
7Q10:
3.3
PF: 0.9
IWC:
29.71 Freq: Q
J
F M
A
M
J
J
A
5
O
N
D
2014
H
- -
H
-
-
H
-
-
H
-
-
2015
H
- -
H
-
-
-
-
-
H
-
-
2016
H
- -
H
-
-
H
-
-
H
-
-
2017
H
- -
H
-
-
H
-
-
H
-
-
2018
H
- -
-
-
-
-
-
-
-
-
-
Oakboro WWTP-002-West Stanly,
NCO043532/002
County:
Stanly
Region:
MRO
Basin:
YAD13
Jan Apr Jul Oct
SOC_JOC:
Cer17dPF
Begin: 4/1/2004
chr lim: 4.6%
NonComp:
Single
7Q30:
29
PF: 0.9
IWC:
4.6 Freq: Q
J
F M
A
M
J
J
A
5
0
N
D
2014
Pass
- -
Pass
-
-
Pass
-
-
Pass
-
-
2015
Pass
- -
Pass
-
-
Pass
-
-
Pass
-
-
2016
Pass
- -
Pass
-
-
Pass
-
-
Pass
-
-
2017
Pass
- -
Pass
-
-
Pass
-
-
Pass
-
-
2018
Pass
- -
-
-
-
-
-
-
-
-
-
Ocracoke Sanitary District (RO) WrP
NCO041530/001
County:
Hyde
Region:
WARD
Basin:
Tar08
Feb May Aug Nov
SOC_JOC:
Mysd24PF
Begin: 12/1/2009 24hr p/f ac monit:
90
NonComp:
7Q30:
NA
PF: 0.45 IWC:
NA Freq: QP/F
J
F M
A
M
l
J
A
5
0
N
D
2014
-
Pass -
-
Pass
-
-
Pass
-
-
Fall Pass
-
2035
-
Pass -
-
Pass
-
-
Pass
-
-
Pass
-
2016
-
Pass -
-
Pass
-
-
Pass
-
-
Pass
-
2017
-
Pass -
-
Pass
-
-
Pass
-
-
Pass
-
2018
-
Pass -
-
-
-
-
-
-
-
-
-
Legend: P= Fathead minnow (Pimohales oromelas). H=No Flow (facility is active). S=Solt test between Certified Labs Page 80 of 122

On Tue, Feb 6, 2018 at 3:36 PM, Berry, Ron <[e-mail]> wrote:
Ms. Davis,
As a matter of record to comply with federal and state regulations on NPDES application on a five year cycle , the
Division needs confirmation from the Permittee that:
1. You are still requesting renewal of your active NPDES permitted flow of 0.9 MGD
2. You are still requesting a NPDES permit modification to expand to 1.2 MGD
3. There has been no change in the operation of the current facility, sources of wastewater (activation of
pretreatment program or acceptance of non -domestic wastewater) since submittal of the 2013 NPDES permit
renewal and modification application.
A confirmation response to this email is acceptable and will be attached to the 2013 application to show the application
has been updated. At this time no additional information is required. After the NPDES permit is issued with a limitation
page for expansion to 1.2 MGD, for West Stanly to expand will require Authorization to Construct approval through a
separate application process. If you have any questions let me know.
Ron Berry
Engineer
Division of Water Resources/Complex Permitting
North Carolina Department of Environmental Quality
919 807 6396 office
ron. berrV(cDncd enr.gov
512 N. Salisbury Street
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

Berry, Ron
From: Donna Davis <[e-mail]>
Sent: Tuesday, February 06, 2018 4:00 PM
To: Berry, Ron
Subject: [External] Re: Updated required fro NPDES renewal and modification application
Mr. Berry,
This email is to confirm that:
1. Stanly County is still requesting renewal of your active NPDES permitted flow of 0.9 MGD for the West Stanly
W WTP.
2. Stanly County is still requesting a NPDES permit modification to expand to 1.2 MGD for the West Stanly WWTP.
3. There has been no change in the operation of the current facility, sources of wastewater (activation of
pretreatment program or acceptance of non -domestic wastewater) since submittal of the 2013 NPDES permit
renewal and modification application.
Thank you for your assistance with this process.
Donna Davis
Stanly County Utilities
1000 N V Street
Suite 12
Albemarle, NC 28001
[phone]

Berry, Ron
From: Behm, Pamela
Sent: Monday, July 17, 2017 12:22 PM
To: Berry, Ron
Subject: RE: Question on Impairment
Hi Ron,
What we've been telling everyone is that we have to use the most current approved 303(d) list, which in this case is
2014. EPA disagrees with delisting these specific waters in 2016 and they will likely be put back on the final 2016 303(d)
list. I'm not exactly sure what you mean by AL no longer applies, we don't have any data for these segments to compare
to the new dissolved metals standards, so we have to work under the assumption that they are still impaired.
Hope this helps.
Pam
From: Berry, Ron
Sent: Monday, July 17, 2017 11:59 AM
To: Behm, Pamela <[e-mail]>
Subject: Question on Impairment
Pam,
I am working on a NPDES permit renewal and expansion for West Stanly WWTP (formerly Oakboro WWTP). The facility's
primary permitted discharge is to Rocky River AU#13-17c3 (Yadkin -Pee Dee River Basin). The current permit also has an
emergency discharge to Long Creek AU#13-17-31b (Yadkin -Pee Dee River Basin. The Rocky River segment was impaired
for Copper and Zinc in 2008 and Long Creek for Copper in 2008. Both segment are still listed as impaired on the 2014
303d list but in the pending 2016 303d list Rocky River delisted Copper and Zinc impairments (see below) and turbidity
was added.
Rocky River From Anderson Creek to Lanes Creek
13-17c3 C 34.9 FW Miles
New IRC 2014 Category 5 Parameter Justification for removing assessment from the 2016 303(d)
3a Previous listing in Category 5 was inconsistent with the assessment
methodology. Available data insufficient to determine attainment
status
Copper Q µg/I, AL, FW)
3a Previous listing in Category 5 was inconsistent with the assessment
methodology. Available data insufficient to determine attainment
status
Zinc (50 µg/I, AL, FW)
For Long Creek segment the copper impiarmnet remained in the 2016 303d assestment..
Not sure how to inturpret the receiving stream impairment for this NPDES permit. AL no longer applies and both the
copper and zinc current have new WQS criteria.
Your input would be appreciated.

Ron Berry
Engineer
Division of Water Resources/Complex Permitting
North Carolina Department of Environmental Quality
919 807 6396 office
ron.berry(a)ncdenr.00v
512 N. Salisbury Street
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

&p0, Coy'�—
,^
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Oakboro WWTP, NCO043532 I Modification I Yadkin -Pee Dee
FORM
2A NPDES FORM 2A APPLICATION OVERVIEW
NPDES
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 2 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 (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). SIUs 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 Fonn 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 1 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Oakboro WWTP, NCO043532
Modification
Yadkin- Pee Dee
o
BASIC .APPLICATION INFORMATION -
PART A. BASIC APPLICATION INFORMATION FOR A.LL APPLICANT , . , , l„ _ _-
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet.
A.1. Facility Information.
Facility Name Oakboro Wastewater Treatment Plant
Mailing Address P.O. Box 610
Oakboro, NC 28129
Contact Person Larry Branch
Title Special Projects Manager
Telephone Number [phone]
Facility Address Barbee's Grove Church Road.
(not P.O. Box) Oakboro NC 28129
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant Name Town of Oakboro
Mailing Address 109-A North Main Street P.O. Box 610
Oakboro NC 28129
Contact Person Larry Branch —
Title Special Projects Manager
Telephone Number [phone]
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 ® 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 NCO043532 PSD
U I C Other
RCRA Other
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.).
Name Population Served Type of Collection System Ownership
Town of Oakboro 1.959 Separate Sanitary Sewer Town of Oakboro
Town of Stanfield 1.485 Separate Sanitary Sewer Town of Stanfield
Town of Locust 2,928 _ Separate Sanitary Sewer Town of Locust
Total population served 6,373
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 2 of 22

ello�
/,'1
/001�
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Oakboro WWTP, NCO043532 I Modification Yadkin - Pee Dee
A.S. Indian Country.
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 (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 0.90 mgd
Two Years A -go Last Year This Year
b. Annual average daily flow rate 0.40 0.39 0.37
C. Maximum daily flow rate 0.94 0.81 0.81
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 100.00 %
❑ Combined storm and sanitary sewer %
A.8. Discharges and Other Disposal Methods.
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
ii. Discharges of untreated or partially treated effluent
iii. Combined sewer overflow points
iv. Constructed emergency overflows (prior to the headworks)
V. Other Emergency Discharge
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.? ❑ Yes ® No
If yes, provide the following for each surface impoundment:
C.
d.
Location:
Annual average daily volume discharge to surface impoundment(s)
Is discharge ❑ continuous or ❑ intermittent?
Does the treatment works land -apply treated wastewater?
If yes, provide the following for each land application site:
Location:
Number of acres:
Annual average daily volume applied to site:
Is land application ❑ continuous or ❑ intermittent?
Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works?
mgd
❑ Yes ® No
mgd
❑ Yes ® No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 3 of 22

140�
fAk�
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Oakboro WWTP, NCO043532 Modification Yadkin — Pee Dee
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 ( l
For each treatment works that receives this discharge, provide the following:
Name
Mailing Address
Contact Person
Title
Telephone Number f )
If known, provide the NPDES permit number of the treatment works that receives this discharge
Provide the average daily flow rate from the treatment works into the receiving facility. mgd
e. Does the treatment works discharge or dispose of its wastewater in a manner not included
in A.8. through A.8.d above (e.g., underground percolation, well injection): ❑ Yes ® No
If yes, provide the following for each disposal method:
Description of method (including location and size of site(s) if applicable):
Annual daily volume disposed by this method: _
Is disposal through this method ❑ continuous
or ❑ intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 4 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Oakboro WWTP, NCO043532 I Modification I Yadkin — Pee Dee
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 002
b.
Location Town of Oakboro
28129
(City or town, if applicable)
(Zip Code)
Stanly
NC
(County)
(State)
35.211389
80.254444
(Latitude)
(Longitude)
C.
Distance from shore (if applicable)
ft.
d.
Depth below surface (if applicable)
ft.
e.
Average daily flow rate 0.37
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.
a. Name of receiving water Rocky River
b. Name of watershed (if known) Rocky River Watershed
United States Soil Conservation Service 144git watershed code (if known): 030401050406
C. Name of State Management/River Basin (if known): Yadkin — Pee Dee
United States Geological Survey 8-digit hydrologic cataloging unit code (if known): 03040105
d. Critical low flow of receiving stream (if applicable)
acute cis
e. Total hardness of receiving stream at critical low flow (if applicable):
chronic
cfs
mg/I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 5 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Oakboro VWVTP, NCO043532
Modification
Yadkin — Pee Dee
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply.
® Primary ® Secondary
❑ Advanced ❑ Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal 98.46 %
Design SS removal 97.90 %
Design P removal %
Design N removal %
Other %
C. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
Chlorine Disinfection
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: 002
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
PARAMETER
Value
Units
Value
Units
Number of Samples
pH (Minimum)
6.25
S.U.
pH (Maximum)
9.93
S.U.
Flow Rate
1.16
MGD
0.37
MGD
335
Temperature (Winter)
17.80
C
12.30
C
152
Temperature (Summer)
25.90
C
21.40
1 C
183
* For pH please report a minimum and a maximum daily value
MAXIMUM DAILY
AVERAGE DAILY DISCHARGE
POLLUTANT
DISCHARGE
ANALYTICAL
ML/MDL
Number of
METHOD,-
Conc.
C
Units
Conc.
Units
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
B005
62.70
m /L
4.80
m /L
144
9.0 m /L
CBOD5
DEMAND (Report one)
FECAL COLIFORM
910.00
#/100 mL
12.46
#/100 mL
145
200/100 mL
TOTAL SUSPENDED SOLIDS (TSS)
122.00
m /L
8.20
m /L
144
30 m /L
ENO.'OF PART A.
I ,
REFER-, To, THE:APPLICATION OVERVIE 11:(PAG'E 1):TO DETERMINE' HICH,QTHER PARTS::
,..
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 6 of 22

I
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Oakboro WWTP, NCO043532 I Modification I Yadkin — Pee Dee
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 Emeraencv Outfall 001
b.
Location Town of Oakboro
28129
(City or town, if applicable)
(Zip Code)
Stanly
NC
(County)
(State)
35.235556
80.266667
(Latitude)
(Longitude)
C.
Distance from shore (if applicable)
ft.
d.
Depth below surface (if applicable)
ft.
e.
Average daily flow rate
0.00
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 of times per year discharge occurs:
Emergency
Average duration of each discharge:
Varies
Average flow per discharge:
Varies
mgd
Months in which discharge occurs:
Varies
g.
Is outfall equipped with a diffuser?
❑ Yes
® No
A.10. Description of Receiving Waters.
a. Name of receiving water Long Creek
b. Name of watershed (if known) Rocky River Watershed
United States Soil Conservation Service 14-digit watershed code (if known): 030401050406
C. Name of State Management/River Basin (if known): Yadkin — Pee Dee
United States Geological Survey 8-digit hydrologic cataloging unit code (if known): 03040105
d. Critical low flow of receiving stream (if applicable)
acute cfs
e. Total hardness of receiving stream at critical low flow (if applicable):
ka
chronic
cis
mg/I of C8CO3
NPDES FORM 2A Additional Information

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Oakboro VWITP, NCO043532
Modification
Yadkin — Pee Dee
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply.
® Primary ® Secondary
❑ Advanced ❑ Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal %
Design SS removal %
Design P removal %
Design N removal %
Other %
C. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
Chlorine Disinfection
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 QAlQC requirements for standard methods for anaiytes 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.
Outfali number. 002
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
PARAMETER
Value
Units ,
Value
Units
Number of Samples:
pH (Minimum)
S.U.
pH (Maximum)
S.U.
Flow Rate
Temperature (Winter)
Temperature (Summer)
For pH please report a minimum and a maximum daily value
MAXIMUM DAILY
AVERAGE DAILY DISCHARGE
POLLUTANT
DISCHARGE.
ANALYTICAL
METHOD
MUMDL _
Cone.
Units
Cone.
Units
Number of.
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
BOD5
CBOD5
DEMAND (Report one)
FECAL COLIFORM
TOTAL SUSPENDED SOLIDS (TSS)
:END=OF PART'_A
REFER. TO- THE: APPLICATION QVERVIEWti(PAGE 1) TO DETERMINE WHICH OTHER P,ARTS�. f t
OF FORM: 2A YOU, aMUST CMPLTE
4 .
NPDES FORM 2A Additional Information

6a
FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Oakboro VWIITP, NCO043532
Modification
Yadkin — Pee Dee
.BASIC APPLICATION'INEORMATION':
PART B._ CANTS WITH A DESIGN FLOW GREATER THAN DR,
ADDITIONAL:ApPLICATION ;INFORMATION FOR APPLI_ r
:EQUAL' TO 0.1. ,MGD.(1 OO,OOQ' gallonS
All applicants with a design flow rate 2 0.1 mgd must answer questions B.1 through B.S. All others go to Part C (Certification).
B.I. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
65,000 gpd
Briefly explain any steps underway or planned to minimize inflow and infiltration.
As of December 2012 the Town of Oakboro is 37% complete with a sewer line rehabilitation project that shall eliminate
much of the inflow and infiltration at the WWTP.
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.)
a. The area surrounding the treatment plant, including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within % mile of the property boundaries of the treatment
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 is stored, treated, or disposed.
L If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g.,
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram.
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a
contractor? ❑ Yes ® No
If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional
pages if necessary).
Name:
Mailing Address:
Telephone Number: ( )
Responsibilities of Contractor:
B.S. 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 B.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.
NIA
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 7 of 22

r"1
AW
FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Oakboro WWTP, NCO043532
Modification
Yadkin — Pee Dee
C. If the answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if applicable).
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DD/YYYY MM/DD/YYYY
- Begin Construction I I I I
- End Construction
- Begin Discharge 1 I 1 1
- Attain Operational Level I I I I
e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? ❑ Yes ❑ No
Describe briefly:
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
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 combine 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 anaiytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on -half years old.
Outfall Number: 002
MAXIMUM DAILY
AVERAGE,DAILY DISCHARGE
POLLUTANT
DISCHARGE
ANALYTICAL
MUMDL
Number of
METHOD
Cone.
Units
Cone.
Units
Samples
CONVENTIONAL AND NON CONVENTIONAL
COMPOUNDS
AMMONIA (as N)
5.30
mg/L
0.23
mg/L
145
6.00
CHLORINE (TOTAL
26.00
ug/L
2.75
ug/L
145
28.00
RESIDUAL, TRC)
DISSOLVED OXYGEN
11.64
mg/L
7.20
mg/L
240
> 5.00
TOTAL KJELDAHL
61.00
mg/L
27.25
mg/L
4
N/A
NITROGEN (TKN)
NITRATE PLUS NITRITE
NITROGEN
OIL and GREASE
PHOSPHORUS (Total)
4.10
mg/L
3.10
mg/L
4
NIA
TOTAL DISSOLVED SOLIDS
(TDS)
OTHER
:END OF; PART B.
REFER TO THE APPLICATION' OVERVIEW (PAGE 1) TO; DET„RMLNE VIIHIC;H OTHER PARTS ,
r,
O -COMPLETE.;
OF FORKIA Y, l�, MU$T C P TE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 8 of 22

lolk1
31 FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Oakboro VWIITP, NCO043532
Modification
Yadkin — Pee Dee
SUPPLEMEN U TAL APPLICATION INFORMATION-
PART E; TOXICITII' 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-half 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 EA for previously submitted information. If EPA methods were not used, report the reasons for using alternate 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 biomonitodng 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.I. Required Tests.
Indicate the number of whole effluent toxicity tests conducted in the past four and one-half years.
❑ chronic ❑ acute
E.2. Individual Test Data. Complete the following chart for each whole effluent toxicity test conducted in the last four and one-half years. 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 15 of 22

l0k)
/Oft\
' FACILITY NAME AND PERMIT NUMBER:
Oakboro WWTP, NCO043532
PERMIT ACTION REQUESTED:
Modification
RIVER BASIN:
Yadkin — Pee Dee
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; if 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
LC5o
95% C.I.
%
%
%
Control percent survival
%
%
%
Other (describe)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 16 of 22

/Ak*N
n
' FACILITY NAME AND PERMIT NUMBER:
Oakboro VWIlTP, NCO043532
PERMIT ACTION REQUESTED:
Modification
RIVER BASIN:
Yadkin - Pee Dee
Chronic:
NOEC
%
%
%
IC25
%
%
%
Control percent survival
%
%
%
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)?
f
! f
f
Other (describe)
E.3. Toxicity Reduction Evaluation. Is the treatment works involved in a Toxicity Reduction Evaluation?
❑ Yes ❑ No If yes, describe:
E.4. Summary of Submitted Biomonitoring Test Information. If you have submitted biomonitoring test information, or information regarding the
cause of toxicity, within the past four and one-half years, provide the dates the information was submitted to the permitting authority and a summary
of the results.
Date submitted: / / (MWDD/YYYY)
Summary of results: (see instructions)
END OF PART E.
REFER TO THE,APPLICATION OVERVIEW (PAG:E 1 y TO DETERMINE VNHICH OTHER PARTS,:
OF FORM. 2A YOU tV�UST_`COMPLETE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 17 of 22

IV
109 A N. Main Street
B.o.Box610
OaUoro, NC 28129
704-48S-3351(PhMe)
704-48S-2439 (far)
Sludge Management
The Town of Oakboro WWTP utilizes a 400,000 gallon aerobic digester
with two (2) floating aerators and one (1) mixer with floating weir for
dewatering.
Synagro Inc. is the Town's contractor operator, which handles permitting,
reporting and land application. At present we have approximately 143.8
acres of permitted land:
If further information is required see Permit WQ0005387 or contact this
office.
'
arry Branch, Town Administrator
Phone: [phone]
Cell: 704-322-8666
Email: oaknet@cvam�prica.net