NC0020290_Application (ATC)_20240702

DocuSign Envelope ID:8FEF5EDA-01 FC-4EFA-ABB8-BA4FC4BE96F7
1• WithersRavenel Letter of Transmittal
Our People.Your Success
84 Coxe Avenue, Suite 260
Asheville, NC 28801
t: 828.255.0313
DATE:06/14/2024 PRO1.NO.:SRP-W-ARP-
0173
ATTENTION: NCDENR-Division of Water Resources/NPDES
TO: NCDENR-Division of Water
Resources/NPDES
512 N.Salisbury Street,Floor 9 RE: Pine Swamp Wastewater Plant Rehabilitation
Raleigh,NC 27604
WE ARE SENDING YOU THE FOLLOWING ITEMS:
►= Attached ❑ Under Separate Cover Via
❑ Shop Drawings ❑ Prints ® Plans ❑ Samples ZI Specifications
❑ Copy of Letter ❑ Change Order ❑ Disk M Other Application
COPIES DESCRIPTION
R1 Cover Letter
1 Review Fee-Check juL 0 2 2024
1 Application
1 Project Plans&Specifications NCDEQIDWRINPDES
1 NPDES Permit(Part I)&SOC
1 Calculations
1 Digital Copy(USB)Entailing All Items Listed Above(excluding payment)
THESE ARE TRANSMITTED as checked below:
® For approval ❑ Approved as submitted ❑ Resubmit copies for approval
❑ For your use ❑ Approved as noted ❑ Submit copies for distribution
❑ As requested ❑ Returned for corrections ❑ Return corrected prints
® For review and comment ❑ Other
❑ For bids due ❑ Prints returned after loan to us
Please see the attached copies for the permit application submittal. Please contact me at
REMARKS: [e-mail] or at(828)255-0313.
Sincerely,
Dana Bolden
Heather Hockaday
Town Manager OoeuSigned by:
COPY TO: [phone]
[e-mail] SIGNED:
A4CO4.iLeUh1-44
Lynn Austin
Yancey County Manager QA/QC:
(828)-682-3971
[e-mail] RECEIVED:
If enclosures are not as noted,kindly notify us at once.

DocuSign Envelope ID:8FEF5EDA-01FC-4EFA-ABB8-BA4FC4BE96F7
Ao WithersRavenel
/ Our People.Your Success.
To: NC Department of Environment and Natural Resources
Division of Water Resources/NPDES
512 N. Salisbury Street
9th Floor
Raleigh, NC 27604
Phone: [phone]
Attn: DWR/NPDES Plan Review
CC: Lynn Austin,Yancey County Manager �GE��ED
Heather Hockaday,Town Manager R
From: Dana Bolden, PE JU` O 2024
Date: June 13, 2024 ppEs
Project: Pine Swamp Wastewater Plant Rehabilitation
EQ��w�IN
DWI Project Number: SRP-W-ARP-0173 NCjO
WR Project Number:08221172.00
Subject: Division of Water Resources/NPDES
To whom it may concern:
On behalf of Yancey County and the Town of Burnsville, WithersRavenel is submitting the attached
application to receive an Authorization to Construct (ATC) Permit. This permit is intended for issuance to
the Pine Swamp WWTP (NPDES Permit: NC0020290) for rehabilitation. The proposed project will consist
of the rehabilitation of the wastewater treatment plant and the replacement of treatment equipment that is
failing due to age to meet the wastewater treatment needs of this area. The scope of work includes the
replacement of the existing fine screens and aerated grit removal system, the replacement of the existing
0.5 MGD contact stabilization treatment system with 0.5 MGD extended air process with a new detached
chlorine contact basin, the replacement of the existing gaseous chlorine and sulfur dioxide systems with
liquid sodium hypochlorite and sodium bisulfite feed systems,and the rehabilitation of the existing 0.5 MGD
concrete structure and conversion to an equalization basin and aerobic digestor.
The Town has received a Letter of Intent to Fund (LOIF) for this project (DWI # SRP-W-ARP-0173) from
the Department of Water Infrastructure(DWI). Per the received LOIF and correspondence with DWI staff,
the next grant milestone deadline is the Bid and Design Package, due on June 14t'', 2024. This application
and/or the resulting Authorization to Construct, if received at that time, will be included in the Bid and
Design Package Submittal. The construction contracts are scheduled to be executed by December 1,2024,
with construction to be completed by the end of 2026.
No other permits are expected to be required for this project.
The application package includes the following:
1. Form ATC 10-23
2. NPDES Part I Permit
3. SOC
4. Plans
5. Specifications
6. Calculations
7. Check
115 MacKenan Drive I Cary, NC 27511
t:919.469.3340 I f:919.467.6008 I www.withersravenel.com I License No. F-1479
Asheville I Cary I Charlotte I Greensboro I Pittsboro I Raleigh I Southern Pines I Wilmington

DocuSign Envelope ID:8FEF5EDA-01FC-4EFA-ABB8-BA4FC4BE96F7
WithersRavenel;�
Our People.Your Success.
Do not hesitate to contact me at(828)-255-0313 or at [e-mail] should you have any
questions or concerns.
rA4iAllYned by:
�sl Re I
C043C8DFF447E...
Dana Bolden, PE
Page 2 of 2

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
SECTION 1: INSTRUCTIONS AND INFORMATION
A. The Division of Water Resources will accept this application package for review only if all of the items are provided and the
application is complete. Failure to submit all of the required items will result in the application package being returned as incomplete
per 15A NCAC 02T.0105(b).
B. A check or money order must be submitted in the amount of$1000.00 (except minor modifications) dated within 90 days of
application submittal and made payable to North Carolina Department of Environmental Quality(NCDEQ).
C. Plans and specifications must be prepared in accordance with 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General
Statute 133-3,North Carolina General Statute 143-215.1,and Division of Water Resources Minimum Design Criteria for NPDES
Wastewater Treatment Facilities.
D. The plans and specifications submitted must represent a completed final design that is ready to advertise for bid.
E. Any content changes made to this Form ATC 10-23 shall result in the application package being returned.
F. The Applicant shall submit ONE ORIGINAL and ONE DIGITAL COPY(CD)of the application, all supporting documentation
and attachments. All information must be submitted bound or in a 3-ring binder, with a Section tab for each Section, except the
Engineering Plans.
G. Check the boxes below to indicate that the information is provided and the requirements are met.
H. If attachments are necessary for clarity or due to space limitations,such attachments are considered part of the application package
and must be numbered to correspond to the item referenced.
I. For any project that requires review under the State Environmental Policy Act(SEPA),an Authorization to Construct cannot be
issued prior to the completion of a State Clearinghouse advertisement period for a FONSI,EIS,etc.unless the project qualifies for
a Determination of Minor Construction Activity or the funding entity specifies that this requirement does not apply.
J. For more information,visit the Division of Water Resources web site at:http://portal.ncdenr.org/web/wq/swp/ps/nodes.
K. In addition to this Authorization to Construct,the Applicant should be aware that other permits may be required from other Sections
of the Division of Water Resources(for example:reclaimed water facilities permits;Class A or B biosolids residuals permit).
SECTION 2: APPLICANT INFORMATION AND PROJECT DESCRIPTION
A. APPLICANT
Applicant's name Town of Burnsville
Signature authority's name per 15A NCAC 02T.0106(b) Heather Hockaday
Signature authority's title Town Manager
Complete mailing address PO Box 97,2 Town Square Bumsville,NC 28714
Telephone number [phone]
Email address [e-mail]
B. PROFESSIONAL ENGINEER
Professional Engineer's name Dana Bolden
Professional Engineer's title Senior Project Manager
North Carolina Professional Engineer's License No. 28945
Firm name WithersRavenel
Firm License number F-1479
Complete mailing address 84 Coxe Avenue, Suite 260,Asheville. NC 28801
Telephone number 919.238.0325
Email address [e-mail]
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 1

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
C. NPDES PERMIT
NPDES Permit number NC0020290
Current Permitted flow(MGD)—include permit 0.8
flow phases if applicable
D. PROJECT DESCRIPTION
Provide a brief description of the project:This project will consist of the rehabilitation of the wastewater treatment plant and the
replacement of treatment equipment that is failing due to age to meet the wastewater treatment needs of this area.The scope of
work includes the replacement of the existing fine screens and aerated grit removal system,the replacement of the existing 0.5
MGD contact stabilization treatment system with 0.5 MGD extended air process with a new detached chlorine contact basin,the
replacement of the existing gaseous chlorine and sulfur dioxide systems with liquid sodium hypochlorite and sodium bisulfite
feed systems,and the rehabilitation of the existing 0.5 MGD concrete structure and conversion to an equalization basin and
aerobic digestor.
SECTION 3: APPLICATION ITEMS REQUIRED FOR SUBMITTAL FOR ALL PROJECTS
A. Cover Letter
El The letter must include a request for the Authorization to Construct;the facility NPDES Number, a brief project description
that indicates whether the project is a new facility,facility modification,treatment process modification,or facility expansion;
the construction timeline;and a list of all items and attachments included in the application package.
El If any of the requirements of 15 NCAC 02H. 0100, 15A NCAC 02T,North Carolina General Statute 133-3,North Carolina
General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment
Facilities are not met by the proposed design,the letter must include an itemized list of the requirements that are not met.
® If the project is funded by American Rescue Plan Act(ARPA) funds, please include the ARPA project number in the cover
letter and here DWI Project No.: SRP-W-ARP-0173.
B. NPDES Permit
El Submit Part I of the Final NPDES permit for this facility that includes Part A (Effluent Limitations and Monitoring
Requirements)for the monthly average flow limit that corresponds to the work that is requested for this project.
C. Special Order by Consent
El If the facility is subject to any Special Orders by Consent(SOC),submit the applicable SOC.
❑ Not Applicable.
D. Finding of No Significant Impact or Record of Decision
❑ Submit a copy of the Finding of No Significant Impact or Record of Decision for this project.
❑ Provide a brief description of any of the mitigating factors or activities included in the approved Environmental Document
that impact any aspect of design of this project,if not specified in the Finding of No Significant Impact or Record of
Decision.
El Not Applicable.
E. Engineering Plans
® Per I5A NCAC 02T.0504(c)(I),submit one set of detailed plans that have been signed,sealed and dated by a North Carolina
Licensed Professional Engineer.
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 2

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
® Per 21 NCAC 56.1103(a)(6),the name,address and License number of the Licensee's firm shall be included on each sheet of
the engineering drawings.
El Plans must be labeled as follows: FINAL DRAWING—FOR REVIEW PURPOSES ONLY—NOT RELEASED FOR
CONSTRUCTION.
El 15A NCAC 02H .0124 requires multiple(dual at a minimum)components such as pumps, chemical feed systems, aeration
equipment and disinfection equipment. Is this requirement met by the design?®Yes or❑No. If no,provide an explanation:
Plans shall include:
❑ Plans for all applicable disciplines needed for bidding and construction of the proposed project(check as appropriate):
® Civil 0 Not Applicable
El Process Mechanical 0 Not Applicable
EI Structural 0 Not Applicable
El Electrical 0 Not Applicable
O Instrumentation/Controls El Not Applicable
El Architectural 0 Not Applicable
® Building Mechanical 0 Not Applicable
El Building Plumbing 0 Not Applicable
El Plan and profile views and associated details of all modified treatment units including piping,valves,and equipment(pumps,
blowers,mixers,diffusers,etc.)
❑ Are any modifications proposed that impact the hydraulic profile of the treatment facility?® Yes or❑No. If yes,provide a
hydraulic profile drawing on one sheet that includes all impacted upstream and downstream units. The profile shall include
the top of wall elevations of each impacted treatment unit and the water surface elevations within each impacted treatment unit
for two flow conditions:(1)the NPDES permitted flow with all trains in service and(2)the peak hourly flow with one treatment
train removed from service.
❑ Are any modifications proposed that impact the process flow diagram or process flow schematic of the treatment facility?El
Yes or❑No. If yes,provide the process flow diagram or process flow schematic showing all modified flow paths including
aeration,recycle/return,wasting,and chemical feed,with the location of all monitoring and control instruments noted.
F. El Engineering Specifications
El Per l5A NCAC 02T.0504(c)(2),submit one set of specifications that have been signed,sealed and dated by a North Carolina
Licensed Professional Engineer.
El Specifications must be labeled as follows: FINAL SPECIFICATIONS — FOR REVIEW PURPOSES ONLY — NOT
RELEASED FOR CONSTRUCTION.
Specifications shall include:
El Specifications for all applicable disciplines needed for bidding and construction of the proposed project(check as appropriate):
El Civil 0 Not Applicable
El Process Mechanical ❑ Not Applicable
El Structural 0 Not Applicable
El Electrical 0 Not Applicable
❑ Instrumentation/Controls El Not Applicable
El Architectural 0 Not Applicable
El Building Mechanical ❑ Not Applicable
El Building Plumbing ❑Not Applicable
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 3

State of North Carolina
DWR Department of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
El Detailed specifications for all treatment units and processes including piping, valves, equipment (pumps, blowers, mixers,
diffusers,etc.),and instrumentation.
El Means of ensuring quality and integrity of the finished product including leakage testing requirements for structures and
pipelines,and performance testing requirements for equipment.
El Bid Form for publicly bid projects.
G. Construction Sequence Plan
El Construction Sequence Plan such that construction activities will not result in overflows or bypasses to waters of the State. The
Plan must not imply that the Contractor is responsible for operation of treatment facilities.List the location of the Construction
Sequence Plan as in the Engineering Plans or in the Engineering Specifications or in both: Construction Sequencing will be
shown on Engineering Plans on the Proposed Site Plan Sheet C2.00 in Specification 01 10 00 Summary of Work.
H. Engineering Calculations
El Per 15A NCAC 02T.0504(c)(3),submit one set of engineering calculations that have been signed,sealed and dated by a North
Carolina Licensed Professional Engineer;the seal,signature and date shall be placed on the cover sheet of the calculations.
For new or expanding facilities and for treatment process modifications that are included in Section 4.C,the calculations
shall include at a minimum:
® Demonstration of how peak hour design flow was determined with a justification of the selected peaking factor.
• Influent pollutant loading demonstrating how the design influent characteristics in Section 4.B.2 of this form were determined.
El Pollutant loading for each treatment unit demonstrating how the design effluent concentrations in Section 4.B.2 of this form
were determined.
El Hydraulic loading for each treatment unit.
El Sizing criteria for each treatment unit and associated equipment(blowers,mixers,pumps,etc.)
El Total dynamic head(TDH)calculations and system curve analysis for each pump specified that is included in Section 4.C.6.
El Buoyancy calculations for all below grade structures.
❑ Supporting documentation that the specified auxiliary power source is capable of powering all essential treatment units.
I. Permits
El Provide the following information for each permit and/or certification required for this project:
Permit/ If Not Issued Provide
Not Date Date Certification Status and Expected
Permit/Certification Applicable Submitted Approved Number Issuance Date
Dam Safety N/A
Soil Erosion and Sediment Control N/A
USCOE /Section 404 Permit N/A
Water Quality Certification(401) N/A
USCOE/Section 10 N/A
Stormwater Management Plan N/A
•
CAMA N/A
•
NCDOT Encroachment Agreement N/A
Railroad Encroachment Agreement N/A
Other: N/A
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 4

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
J. Residuals Management Plan
❑ For all new facilities,expanding facilities,or modifications that result in a change to sludge production and/or sludge processes,
provide a Residuals Management Plan meeting the requirements of I5A NCAC 02T.0504(j)and.0508;the Plan must include:
❑ A detailed explanation as to how the generated residuals(including trash, sediment and grit)will be collected, handled,
processed,stored,treated,and disposed.
❑ An evaluation of the treatment facility's residuals storage requirements based upon the maximum anticipated residuals
production rate and ability to remove residuals.
❑ A permit for residuals utilization or a written commitment to the Applicant from a Permittee of a Department approved
residuals disposal/utilization program that has adequate permitted capacity to accept the residuals or has submitted a
residuals/utilization program application.
❑ If oil,grease,grit or screenings removal and collection is a designated unit process,a detailed explanation as to how the
oil/grease will be collected,handled,processed,stored and disposed.
El Not Applicable.
SECTION 4: PROJECT INFORMATION
A. WASTEWATER TREATMENT PLANT FLOW INFORMATION—COMPLETE FOR NEW OR
EXPANDING FACILITIES
1. Provide the following flow information:
Plant Flows
Existing Plant Design 0.8 MGD
Current NPDES Permit Limit 0.8 MGD
Current Annual Average
(past 12 months) 0.47 MGD
For Past 12 Months: For Past 24 Months:
Start Date:January/2023 Start Date:January/2022
End Date: December/2023 End Date:December/2023
Maximum Month 0.69 MGD 0.69 MGD
Maximum Day 1.07 MGD 1.37 MGD
Peak Hour 1.725 MGD 1.725 MGD
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 5

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
B. WASTEWATER TREATMENT FACILITY DESIGN INFORMATION—COMPLETE FOR NEW OR
EXPANDING FACILITIES AND FOR TREATMENT PROCESS MODIFICATIONS
1. Have all of the requirements of 15 NCAC 02H.0100, 15A NCAC 02T,North Carolina General Statute 133-3,North
Carolina General Statute 143-215.1,and Division of Water Resources Minimum Design Criteria for NPDES Wastewater
Treatment Facilities been met by the proposed design and specifications?® Yes or❑No. If no,provide justification as to
why the requirements are not met,consistent with 15A NCAC 02T.0105(n):_
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 6

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
2. Provide the design influent and effluent characteristics that are used as the basis for the project design,and the NPDES
permit limits for the following parameters:
Project Basis of Design
Influent Design Influent Design Influent
Concentration Concentration Load
-Current (Must be (Must be
Annual supported by supported by Design Effluent
Average(past Engineering Engineering Concentration and/or NPDES Permit Limits
12 months)if Calculations Calculations
Parameter Available [Section 3.111) [Section 3.H1) Load (monthly average)
Ammonia Nitrogen Not Measured 13.0 mg/L Summer 13.0 mg/L Summer
(NH3-N) mg/L 45 mg/L 300 lb/day
13.0 mg/L Winter 13.0 mg/L Winter
Biochemical 30 mg/L Summer 30 mg/L Summer
Oxygen Demand 181 mg/L 280 mg/L I 124 lb/day
(BOD5) 30 mg/L Winter 30 mg/L Winter
Fecal Coliform 200 per 100 mL 200 per 100 mL
Nitrate+Nitrite Not Applicable,
Nitrogen(NO3-N+ Monitored No Limit Monitored,No Limit
NO2-N) m /I. mg/L
Total Kjeldahl Not Measured
Nitrogen mg/L
Not Applicable, Monitored, No Limit
Monitored No Limit
mg/L mg/L
Total Nitrogen
Not Applicable, Monitored,No Limit
Monitored No Limit lb/year
lb/year
Not Applicable, Monitored,No Limit
Monitored No Limit mg/L
Not Measured Not Measured Not Measured mg/L
Total Phosphorus mg/L mg/L lb/day Not Applicable,
Monitored No Limit Monitored,No Limit
lb/year lb/year
Total Suspended 197 mg/L 271 mg/L 1088 lb/day 30 mg/L 30 mg/L
Solids(TSS)
3. Based on the"Project Basis of Design"parameters listed above,will the proposed design allow the treatment facility to meet
the NPDES Permit Limits listed above?® Yes or❑ No. If no,describe how and why the Permit Limits will not be met :
4. Per 15A NCAC 02T.0505(j),by-pass and overflow lines are prohibited. Is this condition met by the design?® Yes or❑
No If no,describe the treatment units bypassed,why this is necessary,and where the bypass discharges:
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 7

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
5. Per 15A NCAC 02T.0505(k),multiple pumps shall be provided wherever pumps are used. Is this condition met by the
P P P
design?® Yes or❑No. If no,provide an explanation:
6. Per 15A NCAC 02T.0505(1),power reliability shall be provided consisting of automatically activated standby power supply
onsite capable of powering all essential treatment units under design conditions,or dual power supply shall be provided per
15A NCAC 02H.0124(2)(a). Is this condition met by the design? ®Yes or❑No. If no,provide(as an attachment to
this Application)written approval from the Director that the facility:
➢ Has a private water supply that automatically shuts off during power failures and does not contain elevated water storage
tanks,and
➢ Has sufficient storage capacity that no potential for overflow exists,and
➢ Can tolerate septic wastewater due to prolonged detention.
7. Per 15A NCAC 02T.0505(o),a minimum of 30 days of residual storage shall be provided. Is this condition met by the
design? ®Yes or❑No. If no,explain the alternative design criteria proposed for this project in accordance 15A NCAC
02T.105(n):
8. Per 15A NCAC 02T.0505(q),the public shall be prohibited from access to the wastewater treatment facilities.Explain how
the design complies with this requirement:The design ensures compliance with a security fence.
9. Is the treatment facility located within the 100-year flood plain? ® Yes or❑No. If yes,describe how the facility is
protected from the 100-year flood: All structures within the 100-year flood plain will be constructed above the Flood
Protection Elevation.
C. WASTEWATER TREATMENT UNIT AND MECHANICAL EQUIPMENT INFORMATION—COMPLETE
FOR NEW OR EXPANDING FACILITIES AND FOR MODIFIED TREATMENT UNITS
1. PRELIMINARY AND PRIMARY TREATMENT(i.e.,physical removal operations and flow equalization):
No.of Plan Sheet Specification Calculations
Treatment knit Type Size per Unit Provided.
Units Reference Reference (Yes or No)
Manual Bar Screen MGD at peak hourly flow
Mechanical Bar 1 Screw Screen 2.97 MGD at peak hourly flow M1.00 46 07 53.01 Yes
Screen
Aerated/Unaer
Grit Removal 1 ated Grit 3.8 MGD at peak hourly flow M1.00 46 07 53.01 Yes
Chambers
Flow Equalization 1 216,632 gallons C2.00& 46 01 07.71 Yes
M3.00
Primary Clarifier Circularft diameter; ft side
water depth
Primary Clarifier Rectangular square feet; ft side
water depth
Other
II
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 8

State of North Carolina
DW RDepartment of Environmental Quality
r°- Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
2. SECONDARY TREATMENT(BIOLOGICAL REACTORS AND CLARIFIERS)(i.e.,biological and chemical
processes to remove orzanics and nutrients)
No.of Plan Sheet Specification Calculations
Treatment Unit Provided.
Units Type Size per Unit Reference Reference
(Yes or No)
Aerobic Zones/ 1 Circular 299,160 gallons M1.01- 46 07 53.02 Yes
Tanks M 1.02
Anoxic Zones/ gallons
Tanks
Anaerobic
Zones/Tanks gallons
Sequencing Batch
Reactor(SBR) gallons
Membrane gallons
Bioreactor(MBR)
Secondary 42 ft diameter; 15 ft side water M1.01-
Clarifier 1 Circular depth M1.02 46 07 53.02 Yes
Secondary Rectangular square feet; ft
Clarifier side water depth
Other
3. TERTIARY TREATMENT
No.of Plan Sheet Specification Calculations
Treatment Unit Units Type Size per Unit Reference Reference Provided.
(Yes or No)
Tertiary Clarifier Circular ft diameter; ft
side water depth
Tertiary Clarifier Rectangular square feet; ft
side water depth
Tertiary Filter square feet
Tertiary Membrane square feet
Filtration
Post-Treatment
Flow Equalization -- gallons
Post-Aeration gallons
Other
4. DISINFECTION
No.of Plan Sheet Specification Calculatios
Treatment Unit Units Type Size per Unit Reference Reference Provided?
(Yes or No)
gal/day per bank at peak
Ultraviolet Light (Parallel;in hourly flow; number of
series) banks; number of
lamps/bank
Liquid(Gas; 13,247 gallons of contact M 1.06-
Chlorination 1 tablet;liquid) tank/unit M1.08 46 33 00 Yes
Dechlorination (Gas; gallons of contact
tablet;liquid) tank/unit
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 9

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
5. RESIDUALS TREATMENT
No.of Plan Sheet Specification Calculations
Treatment Unit Provided?
Units Type Size per Unit Reference Reference
(Yes or No)
Gravity Thickening square feet; ft side
Tank water depth
Mechanical
Thickening/ dry lb/hour
Dewatering
Aerobic Digestion 1 Circular 185,954 gallons C2.00 46 01 07.71 Yes
Anaerobic
Digestion gallons
Composting dry lb/hour
Drying dry lb/hour
Other
6. PUMP SYSTEMS(include influent, intermediate,effluent,major recycles, waste sludge,thickened waste sludge and plant
drain pumps)
Capacity
Location No.of Purpose Type of each Plan Sheet Specification
Pumps pump Reference Reference
GPM JTDH
Chemical Building 2 Sodium Peristaltic 0.027 14 M1.08 46 33 00
Hypochlorite
Chemical Building 2 Sodium Persitaltic 0.044 9 M1.08 46 33 00
Hypochlorite
EQ Basin Pumps 2 Transfer from EQ Submersible 105 21 M3.00 33 32 11
basin to splitter box
Sludge Pumps Transfer sludge to Submersible 71 14 C2.01 & 33 32 17
Aerobic Digestor C4.03
Chemical Building 2 Sodium Bisulfite Peristaltic 0.005 9 M1.08 46 33 00
7. MIXERS
No. of Power of Plan Sheet Specification
Location Purpose Type each Mixer
Mixers (HP) Reference Reference
•
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 10

State of North Carolina
DW RDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
8. BLOWERS
No.of Capacity of Plan Sheet Specification
Location Blowers Purpose Type ea Blower(ClVI) Reference Reference
Secondary Treatment I Aeration Basin Rotary Screw Blower 2176 C2.00 46 00 00
9. ODOR CONTROL
Location No.of Purpose Type Plan Sheet Specification
Units Reference Reference
D. SETBACKS—COMPLETE FOR NEW WASTEWATER TREATMENT STRUCTURES
1. The minimum distance for each setback parameter to the wastewater treatment/storage units per 15A NCAC 02T.0506(b)are
as follows:
Minimum Distance Is Minimum Distance
Required from Nearest Requirement met by the
Setback Parameter Treatment/Storage Design?If"No",identify
Unit Setback Waivers in Item D.2
Below
Any habitable residence or place of assembly under separate 100 ft ®Yes ❑No
ownership or not to be maintained as part of the project site
Any private or public water supply source 100 ft ® Yes ❑No
Surface waters(streams—intermittent and perennial,perennial 50 ft ® Yes ❑No
waterbodies,and wetlands)
Any well with exception of monitoring wells 100 ft ® Yes ❑No
Any property line 50 ft ❑ Yes ®No
2. Have any setback waivers been obtained per 15A NCAC 02T .0506(d)?® Yes or❑ No. If yes, have these waivers been
written,notarized and signed by all parties involved and recorded with the County Register of Deeds?®Yes or❑No. If no,
provide an explanation:
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 11

State of North Carolina
DWR Department of Environmental Quality
/ Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
SECTION 5: APPLICATION CERTIFICATION BY PROFESSIONAL ENGINEER
Professional Engineer's Certification per 15A NCAC 02T.0105:
I,Dana Bolden,attest that this application package for an Authorization to Construct
(Typed Name of Professional Engineer)
for the Pine Swamp Wastewater Plant and Pine Swamp Wastewater Plant Rehabilitation Project
(Facility and Project Name)
was prepared under my direct supervisory control and to the best of my knowledge is accurate,complete and consistent
with the information supplied in the engineering plans,specifications,calculations,and all other supporting
documentation for this project. I further attest that to the best of my knowledge the proposed design has been prepared in
accordance with all applicable regulations and statutes, 15 NCAC 02H. 0100, 15A NCAC 02T,North Carolina General
Statute 133-3,North Carolina General Statute 143-215.1,and Division of Water Resources Minimum Design Criteria for
NPDES Wastewater Treatment Facilities,and this Authorization to Construct Permit Application,except as provided for
and explained in Section 4.B.1 of this Application. I understand that the Division of Water Resources' issuance of the
Authorization to Construct Permit may be based solely upon this Certification and that the Division may waive the
technical review of the plans, specifications,calculations and other supporting documentation provided in this application
package. I further understand that the application package may be subject to a future audit by the Division.Although
certain portions of this submittal package may have been prepared,signed and sealed by other professionals licensed in
North Carolina,inclusion of these materials under my signature and seal signifies that I have reviewed the materials and
have determined that the materials are consistent with the project design.
I understand that in accordance with General Statutes 143-215.6A and 143-215.6B,any person who knowingly makes any
false statement,representation,or certification in any application package shall be guilty of a Class 2 misdemeanor,which
may include a fine not to exceed$10,000,as well as civil penalties up to$25,000 per violation.
North Carolina Professional Engineer's seal with written signature placed over or adjacent to the seal and dated:
L„141lll llf!!!7J//.
� .-4 /4/
• �N•
'0 O
'y '
e 4 .•A� r
28945
°e y
..
41
J. ao
'��l ill Il llll11 L111
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 11

State of North Carolina
DWRDepartment of Environmental Quality
Division of Water Resources
Division of Water Resources APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT
FORM ATC 10-23
SECTION 6: APPLICATION CERTIFICATION BY APPLICANT
Applicant's Certification per 15A NCAC 02T.0106(b):
I,Heather Hockaday ,attest that this application package for an Authorization to Construct
(Typed Name of Signature Authority and Title)
for the Pine Swamp Wastewater Plant and Pine Swamp Wastewater Plant Rehabilitation Project
(Facility and Project Name)
has been reviewed by me and is accurate and complete to the best of my knowledge. I also understand that if all required
parts of this application package are not completed and that if all required supporting information and attachments are not
included,this application package will be returned to me as incomplete. I further certify that in accordance with 15A
NCAC 02T.0120(b),the Applicant or any affiliate has not been convicted of environmental crimes,has not abandoned a
wastewater facility without proper closure,does not have an outstanding civil penalty where all appeals have been
abandoned or exhausted,are compliant with any active compliance schedule,and does not have any overdue annual fees.
I understand that the Division of Water Resources' issuance of the Authorization to Construct Permit may be based solely
upon acceptance of the Licensed Professional Engineer's Certification contained in Section 5,and that the Division may
waive the technical review of the plans,specifications,calculations and other supporting documentation provided in this
application package. I further understand that the application package may be subject to a future audit.
I understand that in accordance with General Statutes 143-215.6A and 143-215.6B any person who knowingly makes any
false statement,representation,or certification in any application package shall be guilty of a Class 2 misdemeanor,which
may include a fine of to exceed$10,000,as well as civil penalties up to$25,000 per violation.
Signature: e��ti Date: 6 3/ o
THE COMPLETED APPLICATION AND SUPPORTING INFORMATION SHALL BE SUBMITTED
TO:
NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES/NPDES
By U.S.Postal Service By Courier/Special Delivery:
1617 MAIL SERVICE CENTER 512 N. SALISBURY STREET,9TH FLOOR
RALEIGH,NORTH CAROLINA 27699-1617 RALEIGH,NORTH CAROLINA 27604
TELEPHONE NUMBER: [phone]
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC 10-23) Page 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
i,;:57ArE-;
rt.,,,, o.„,-. '-,,
I
, ,,..
ROY COOPER
Governor - Cg
ELIZABETH S.BISER -02
Secretary `e'er
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
November 16,2023
Mr. Shane Dale, Public Works Director
Town of Burnsville
P.O. Box 97
Burnsville,North Carolina 28714
Subject: Final NPDES Permit Renewal
Permit NC0020290
Burnsville WWTP
Yancey County
Grade III Biological WPCS
SIC Code 4952
Dear Mr. Dale:
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).
The following changes were made to the draft permit sent to you on September 6,2023:
• PFAS monitoring has been added to Section A.(1.) Effluent Limitations and Monitoring
Requirements to reflect the requirements specified in Special condition A.(5.) PFAS Monitoring
Requirement.
The final permit maintains the following significant changes identified in the letter sent on September
6,2023:
• To monitor influence of the discharge on the receiving stream and for assessment of site-specific
ammonia requirements, instream monitoring requirements for temperature,pH and ammonia have
been added to the permit[See A.(I.)].
• Per the results of instream waste concentration(IWC)-based calculations for ammonia-nitrogen,
ammonia nitrogen limits have been added[See A.(1.)].
• As effluent data review demonstrated only one detection of oil and grease at a level at 50%of the
chronic allowable discharge concentration,the limits and monitoring requirements for Oil and Grease
have been removed. [See A.(I.)].
• Based on the reasonable potential analysis(RPA)showing no reasonable potential to violate state
water quality standards,the monitoring requirements for total copper and total lead have been
removed from the permit [See A.(I)].
• Based on the reasonable potential analysis(RPA)showing reasonable potential to violate state
water quality standards,total silver limits have been added to the permit and the quarterly monitoring
requirement has been changed to monthly monitoring[See A.(1)]. The Town should use sufficiently
sensitive test methods for total silver(PQL< 1 µg/L), including when performing Effluent Pollutant
Scans.
• To provide an opportunity for the Town to develop a plan to assess sources of total silver in order
to come in compliance with the limits in Section A.(1.),a 3-year schedule of compliance has been
added to the permit[See Special Condition A.(4.)Schedule of Compliance for Total Silver
Limitations].
Q North ro Dm o Environmental Qu I Dio Wsources
5720
12 Nit Salisburlinayepart Streetent 1 f161 I Mad Service Centerality I Raleigh,visinof Northater Car Resources
27699-161 I
D_E
p= ..ter C r\/' 919.707 9000

DocuSign Envelope ID 2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
• A special condition to monitor effluent PFAS chemicals quarterly has been added to the permit,
to be effective six(6)months after EPA has a final wastewater method in 40 CFR136 method
published in the Federal Register[See Special Condition A.(5.)PFAS Monitoring Requirements].
• Language has been added to Footnote 1 to account for influent,effluent,upstream and downstream
abbreviations [See A. (1.)].
• Some of the wording has changed in Special Condition A.(2.), Chronic Toxicity Permit Limit,
please review each paragraph carefully.
• Special Condition A.(3.)has been modified to include the specific three years in which the Effluent
Pollutant Scan shall be performed (2025, 2026, and 2027). In addition, at the end of the Special
Condition, 2nd species Toxicity Testing Requirements for municipal permit renewals per Federal
Regulations [40 CFR 122.21(j)(5)] have been added.
• A notation was made concerning the Electronic Reporting Rule — NPDES Electronic Reporting
Rule—Phase 2 Extension. EPA extended the Phase 2 deadline to December 21,2025.
• Parameter codes have been added to the Effluent Limitations and Monitoring Requirements [ See
A. (1.)].
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 150E 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.
Pretreatment updates in response to NPDES permit renewal:
• On July 1, 2024, 180 days after the effective date of this NPDES permit renewal, the Town is
required to submit to the Division a written technical evaluation of the need to revise local limits
(i.e., an updated IWS/HWA-AT/L-STMP, or documentation of why is not needed). This action
may include revising,updating,or adding to the list of SIUs regardless of timeframe.
o Submit the updated Long-Term Monitoring Plan(LTMP)
• If there are new industries within the service area, submit an updated Industrial
Waste Survey(IWS)
• Review pollutants of concern (POCs)and update the LTMP to reflect pollutants
in industrial user permits(IUPs)and sludge management permit.
o As part of the local limits assessment, please submit the updated Headworks Analysis
(HWA).
The NPDES standard conditions (Parts II, III, and IV) are the same as in your current permit except that
agency and division names have been updated.The latest version is available at https://bit.ly/3k5NFaL and
can be viewed online or downloaded as a PDF file.
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 regulations.
If you have any questions concerning this permit,please contact Nick Coco at(919)707-3609 or via email
at [e-mail].
Sincerely,
Chtid4.41aDocuSigned by:
/.�.� la�
C464531431844FE..
for Richard E. Rogers,Jr., Director
Division of Water Resources,NCDEQ
� NortN Carolina bury Sm,ent I l n I Mail eService Center I Raleigh,tiorth Carolina?7699-1h1 I
TM d��"� 919.707.9000
r.ne.s+a+w

I
DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
Hardcopy: NPDES Files
Central Files
Ecopy: US EPA Region 4
DWR/Asheville Regional Office/Water Quality/Daniel Boss
DWR/Aquatic Toxicology Branch/Cindy Moore&Molly Nicholson
DWR/Municipal Permitting Unit/Keyes McGee
Water Quality Lab&Operations, Inc./Paul Isenhour and Jenna Isenhour
US Fish and Wildlife Services/Byron Hamstead
NC Wildlife Resources Commission/Andrea Leslie
Tennessee DEC/Dane Cutshaw
J-- North Carolina Department of C I I Mail eSer l Quality I I R slei,of North Carolina 27699-161 I
.;7=_criNdie• 919.707.9000

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
Permit NC0020290
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1,other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission,and the Federal Water Pollution Control Act,as amended,the
Town of Burnsville
is hereby authorized to discharge wastewater from a facility located at the
Burnsville WWTP
812 Pine Swamp Road
Burnsville
Yancey County
to receiving waters designated as the Cane River in the French Broad River Basin
in accordance with the effluent limitations,monitoring requirements,and other applicable conditions set
forth in Parts I, II, 11I,and IV hereof.
This permit shall become effective January 1,2024.
This permit and authorization to discharge shall expire at midnight on September 30,2028.
Signed this day November 16,2023.
p n�^^O,ocuSigned byy':A w'.Ww,I'w
cikati
'-C464531431644FE...
for Richard E. Rogers,Jr., Director
Division of Water Resources
By Authority of the Environmental Management
Commission
Page 1 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
Permit NC0020290
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.
Town of Burnsville
is hereby authorized to:
1. Continue to operate and maintain the Burnsville WWTP,an existing 0.8 MGD facility consisting of
the following components:
• Headworks including a fine screen assembly,aerated grit chamber,and bar screens
• Comminuting device
• Splitter box
• Contact tanks
• Reaeration tanks
• Dual circular clarifiers
• Chlorine contact tanks
• Dechlorination
• Post reaeration basin
• Aerobic digesters
• Sludge belt filter press
• Sludge drying beds
• Diesel standby generator
2. Discharge from said treatment works at the location specified on the attached map via Outfall 001
into the Cane River,classified C;Tr waters in the French Broad River Basin and 06010108 HUC.
Page 2 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
Permit NC0020290
PART I
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.8 MGD]
[15A NCAC 02B .0400 et seq., 15A NCACO2B .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 permit expiration,
the permittee is authorized to discharge treated municipal and industrial wastewater from Outfall
001. Such discharges shall be limited and monitored' by the permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
PARAMETER
Monthly Weekly Dail Measurement Sample Sample
Parameter Code Average Average Maximum Frequency Type Location2
Flow 50050 0.8 MGD Continuous Recording I or E
BOD,5 day,20°C 3 C0310 30.0 mg/L 45.0 mg/L 3/week Composite I and E
Total Suspended Solids3 C0530 30.0 mg/L 45.0 mg/L 3/week Composite I and E
NH3 as N C0610 13.0 mg/L 35.0 mg/L 3/week Composite E
Fecal Coliform 31616 200/100 mL 400/100 mL 3/week Grab E
(geometric mean)
pH 00400 Between 6.0 and 9.0 Standard Units 3/week Grab E
Temperature(°C) 00010 Monitor and Report Daily Grab E
Total Residual Chlorine' 50060 28 µg/L 3/week Grab E
Total Phosphorus(mg/L) C0665 Monitor and Report Semi-annually Composite E
TKN (mg/L) 00625 Monitor and Report Semi-annually Composite E
NO3-N+NO2-N (mg/L) 00630 Monitor and Report Semi-annually Composite E
Total Nitrogen 5 (mg/L) C0600 Monitor and Report Semi-annually Calculated E
Total Silver6•7 01042 0.97 µg/L 4.18 µg/L Monthly Composite E
PFAS8 various Footnote 8 Footnote 8 Grab E
Chronic Toxicity 9 TGP3B Monitor and Report Quarterly Composite E
Eftluent Pollutant Scan 10 NCO/ Monitor and Report Footnote 10 Footnote 10 E
Hardness"-Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Composite E
Hardness"-Total as CaCO3(mg/L) 00900 Monitor and Report Quarterly Grab U
Temperature(°C) 00010 Monitor and Report Weekly Grab U and D
pH(s.u.) 00400 Monitor and Report Weekly Grab U and D
NH3 as N(mg/L) C0610 Monitor and Report Weekly Grab U and D
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Special Condition A.(6.).
2. Sample locations I-Influent,E-Effluent,U-Upstream=at least 50 feet above the discharge,D-Downstream=
not more than 500 feet below the discharge.
3. The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15%of the
respective influent value(85%removal).
4. The facility shall monitor TRC when using chlorination for disinfection.The Division shall consider all effluent
total residual chlorine values reported below 50 µg/I to be in compliance with the permit. However,the
permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
(including field certified),even if these values fall below 50 µg/l.
5. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
Footnotes continue on the next page.
Page 3 of 12

DocuSign Envelope ID 2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
Permit NC0020290
Footnotes continued from A.(1.)Effluent Limitations and Monitoring Requirements:
6. The Permittee shall achieve compliance with these limitations by January 1,2027 and shall follow the Total
Silver compliance schedule detailed in Special Condition A.(4.). Starting on the effective date of this permit,the
Permittee shall perform monthly effluent Monitoring and Reporting for Total Silver.
7. The Permittee shall monitor test total silver to the lower reporting level of the procedure,which is< 1 pg/L.
8. See Special Condition A.(5.).
9. Chronic Toxicity(Ceriodaphnia dubia)P/F at 6%with testing in March,June,September,and December.See
Special Condition A.(2.).
10. The permittee shall perform three effluent pollution scans during the term of this permit.See Special Condition
A.(3.).
11. The permittee shall sample instream hardness upstream of the facility's discharge.The sample shall be
representative of the hardness in the stream.Effluent hardness shall be performed in conjunction with testing for
hardness dependent metals(e.g.silver).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 4 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
Permit NC0020290
A.(2.) CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY)
[15A NCAC 02B .0200] [15A NCAC 02B .0500 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 6%.
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
March,June,September,and December.These months signify the first month of each three-month
toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during
representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge
below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit,then multiple-concentration testing shall be performed at a minimum,in
each of the two following months as described in"North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure"(Revised-December 2010,or subsequent versions).
All toxicity testing results required as part of this permit condition will be entered electronically using the
Division's eDMR system 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:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
Or,results can be sent to the email,[e-mail].
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.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,monitoring
will be required during the following month.Assessment of toxicity compliance is based on the toxicity
testing quarter,which is the three-month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
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.
Page 5 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
Permit NC0020290
A.(3.) ADDITIONAL MONITORING REQUIREMENTS FOR PERMIT RENEWAL
[G.S. 143-215.1(B)]
(a.) Effluent Pollutant Scans. The permittee shall perform a total of three(3) Effluent Pollutant Scans
for all parameters listed below. One scan must be performed in each of the following years: 2025,
2026,and 2027. 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. Each annual sample shall coincide with one quarterly toxicity test
each year(see Condition A.(2.)(CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY))),and
each must be collected in a different calendar quarter to 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) C0610 Trans-1,2-dichloroethylene 34546 Bis(2-chloroethyl)ether 34273
Chlorine(total residual,TRC) 50060 l,1-dichloroethylene 3450/ Bis(2-chloroisopropyl)ether 34283
Dissolved oxygen 00300 1,2-dichloropropane C0541 Bis(2-ethylhexyl)phthalate C0100
Nitrate/Nitrite 00630 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 344/8 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 8/549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 l,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium C0034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 3461/
Selenium 01147 2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626
Silver(PQL< I µg/L) 01077 2,4-dimethylphenol 34606 1,2-diphenylhydrazine 34346
Thallium 01059 4,6-dinitro-o-cresol 34657 Fluoranthene C0376
Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381
Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700
Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene C0702
Volatile organic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386
Acrolein 34210 Phenol 34694 Hexachloroethane 34396
Acrylonitrile 34215 2,4,6-trichlorophenol 3462/ Indeno(I,2,3-cd)pyrene 34403
Benzene 34030 Base-neutral compounds: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane 85811 Benzo(a)anthracene C0526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32/01 Benzo(ghi)perylene 3452/ 1,2,4-trichlorobenzene C0551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
1,2-dichloroethane 32/03 Bis(2-chloroethoxy)methane 34278
Page 6 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
Permit NC0020290
(b.) Effluent Scan Reporting. Test results shall be reported electronically via eDMR by December
31 st of each designated sampling year,except that,subject to prior written approval by the Director,
results can be reported on DWR Form DMR-PPA-1 or other form approved by the Director. The
permittee must at least report completion of the test in the eDMR system by entering"1"or"Y"for
parameter code NC01 -Annual Pollutant Scan. If written reports are approved,the report shall be
submitted to the following address:
North Carolina Division of Water Resources
Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Or the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES_WW-EDMR-
Supplemental-Form
(c.) 2"d-Species Toxicity Testing and Reporting.
(i.) In addition to the quarterly toxicity tests required in Condition A.(2.) (CHRONIC TOXICITY
PERMIT LIMIT(QUARTERLY)),the Permittee shall perform and report the results of four
(4)toxicity tests using the same test methods using a second species of test organism suitable
to the tests being conducted.
(ii.) The 21'd species toxicity tests shall be conducted either:
(A) Once per quarter in a single 12-month period(four samples); if this option is chosen,
the sample for each 2nd species test shall coincide with the quarterly samples collected
for(CHRONIC TOXICITY PERMIT LIMIT(QUARTERLY)); or
(B) Once per 12-month period in the four-and one-half year period prior to the scheduled
application for permit renewal (four samples);if this option is chosen,three of the
samples for the 2nd species test shall coincide with those for the annual effluent scans
and the coincident quarterly toxicity test,and each of the four annual samples shall be
collected in a different calendar quarter in order to represent seasonal variation.
(iii.) The results of the toxicity tests shall be submitted to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
Or,results can be sent to the email,[e-mail].
(iv.) Results of the 2nd species tests shall also be summarized in Part E(Toxicity Testing Data)of
EPA Municipal Application Form 2A when submitting the permit renewal application to the
NPDES Wastewater Program.
The Permittee may contact the Division's Aquatic Toxicology Branch at 919-743-8401 for
guidance on conducting the additional toxicity tests and reporting of the results.
Page 7 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
Permit NC0020290
A.(4.) SCHEDULE OF COMPLIANCE FOR TOTAL SILVER LIMITS(3 YR)
[G.S. 143-215.1 (b)]
(a.) By January 1,2025,the Permittee shall submit to the Division a Corrective Action Plan(CAP)for
Division approval,summarizing the strategy or actions to be taken to achieve compliance with the
Total Silver limitations listed in Section A.(1.). This plan will include specific dates for completion
or implementation of each action.
(b.) By January 1,2026,the Permittee shall submit to the Division a summary of actions taken towards
achieving compliance with the Total Silver limitations specified in Section A.(1.).
(c.) By January 1,2027,the Permittee shall achieve compliance with Total Silver limitations specified
in Section A.(1.).
(d.) Upon approval of the Corrective Action Plan(CAP)by the Division,the report,actions,and
implementation dates become an enforceable part of this permit. Any modifications to the schedule
shall be requested to the Division at least ninety(90)days before the deadline.Modifications to the
schedule more than four months will be subject to public notice.
(e.) Annual summaries and the CAP shall include the owner's name,NPDES permit number,and
a Permittee contact person and shall be submitted to:
NCDEQ/Division of Water Resources NCDEQ/Division of Water Resources
NPDES Permitting Asheville Regional Office
1617 Mail Service Center 2090 U.S. 70 Highway
Raleigh, NC 27699-1617 Swannanoa,NC 28778
A.(5.) PFAS MONITORING REQUIREMENT
[G.S. 143-215.1(b.)]
This reporting requirement for the per-and polyfluoroalkyl substances(PFAS)parameters listed under Table 1 of
the Final Method 1633 takes effect the first full calendar quarter following six(6)months after EPA publishes a 40
CFR part 136 Final PFAS Method for wastewater in the Federal Register. Monitoring will be at a quarterly
frequency.
Find the current parameters listed under Table 1 of the 4th Draft Method 1633 Analysis of Per-and Polyfluoroalkyl
Substances(PFAS)in Aqueous, Solid,Biosolids,and Tissue Samples by LC-MS/MS at:
https://www.epa.gov/system/files/documents/2022-
12/3rd%20Draft%20Method%201633%20December%202022%2012-20-22 508.pdf
Page 8 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
Permit NC0020290
A.(6.) ELECTRONIC REPORTING-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 ISupersedes Section D.(2.)and Section E.(5.)(a)I
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 monthly electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. The eDMR system may be
accessed at: https://deq.nc.gov/about/divisions/water-resources/edmr.
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 following address:
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
See"How to Request a Waiver from Electronic Reporting"section below.
Monitoring results obtained during the previous month(s)shall be summarized for each month and
reported via the eDMR system no later than the last calendar day of the month following the
completed reporting period. 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 21,2025,the permittee must electronically report the following compliance
monitoring data and reports,when applicable:
• Sewer Overflow/Bypass Event Reports; and
• Pretreatment Program Annual Reports;and
• Clean Water Act(CWA) Section 316(b)Annual Reports.
Page 9of12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
Permit NC0020290
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: https://www.federalregister.gov/documents/2015/10/22/2015-
24954/national-pollutant-discharge-elimination-system-npdes-electronic-reporting-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.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Sianatory Requirements (Supplements Section B.(11.)(b)and Supersedes Section B. (11.) (d)I
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a)or by a duly authorized representative of that person as described in Part II,
Section B.(11.)(b). A person,and not a position,must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions,the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
Page 10 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
Permit NC0020290
eDMR system,registering for eDMR and obtaining an eDMR user account,please visit the following
web page:
http://deq.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 certib?, 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].
li
Page 11 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
Permit NC0020290
.,.r.. SP
- Pam' -� - '.�. -I .CI
1 .o-,I r f.
t . / ,
IyII,,�ju,.,, .,.s
)'r } • Burnsville WWTP 1p..,.` w
►+.. &Outfall 001 \i. d
e
a
P, 11 �- rr t, Brit 1
5✓..
,J .. '� , s ue/ 1
r'i t':.
a It
•
C ` mot.
NC0020290 Town of Burnsville WWTP A t Facility x
trtude. 35'54'17- Recervmg Stream: Cane River Location
Longitude: 82'19'59" Stream Class: C-Trout
Quad No. D9NE:Burnsvdle 8-DigitHUG 08010108 - 4-
Sub-Basin: 04.03-07
PermrttedFlow: 0.8 MGD n/
f Y Map not to scale
Page 12 of 12

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 1 of 18
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
Section A. Definitions
2/Month
Samples are collected twice per month with at least ten calendar days between sampling events.These samples shall be
representative of the wastewater discharged during the sample period.
3/Week
Samples are collected three times per week on three separate calendar days.These samples shall be representative of
the wastewater discharged during the sample period.
Act or"the Act"
The Federal Water Pollution Control Act,also known as the Clean Water Act(CWA),as amended,33 USC 1251,et.
seq.
Annual Average
The arithmetic mean of all"daily discharges"of a pollutant measured during the calendar year. In the case of fecal
coliform,the geometric mean of such discharges.
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
Bypass
The known diversion of waste streams from any portion of a treatment facility including the collection system,which is
not a designed or established or operating mode for the facility.
Calendar Day
The period from midnight of one day until midnight of the next day. However,for purposes of this permit,any
consecutive 24-hour period that reasonably represents the calendar day may be used for sampling.
Calendar Week
The period from Sunday through the following Saturday.
Calendar Quarter
One of the following distinct periods:January through March,April through June,July through September,and
October through December.
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 mL in
such a manner as to result in a total sample representative of the wastewater discharge during the sample period.The
Director may designate the most appropriate method(specific number and size of aliquots necessary,the time interval
between grab samples,etc.)on a case-by-case basis. Samples may be collected manually or automatically. Composite
samples may be obtained by the following methods:
(1) Continuous:a single,continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume:a series of grab samples collected at equal time intervals over a 24 hour period
of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection,or
(3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period with
the time intervals between samples determined by a preset number of gallons passing the sampling point.Flow
measurement between sample intervals shall be determined by use of a flow recorder and totalizer,and the
preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at
the treatment system,or
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 2 of 18
(4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at a
constant time interval.Use of this method requires prior approval by the Director.This method may only be
used in situations where effluent flow rates vary less than 15 percent.The following restrictions also apply:
• Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters
➢ Influent samples shall not be collected more than once per hour.
• Permittees with wastewater treatment systems whose detention time<24 hours shall collect effluent grab
samples at intervals of no greater than 20 minutes apart during any 24-hour period.
➢ Permittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect effluent
grab samples at least every six hours;there must be a minimum of four samples during a 24-hour sampling
period.
Continuous flow measurement
Flow monitoring that occurs without interruption throughout the operating hours of the facility.Flow shall be
monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance
activities on the flow device.
Daily Discharge
The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the
calendar day for purposes of sampling. For pollutants measured in units of mass,the"daily discharge"is calculated as
the total mass of the pollutant discharged over the day.For pollutants expressed in other units of measurement,the
"daily discharge"is calculated as the average measurement of the pollutant over the day.(40 CFR 122.2;see also
"Composite Sample,"above.)
Daily Maximum
Thehighest"dailydischarge"duringthe calendar month.
g g
Daily Sampling
Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the
permit. Sampling shall be conducted on weekdays except where holidays or other disruptions of normal operations
prevent weekday sampling. If sampling is required for all seven days of the week for any permit parameter(s),that
requirement will be so noted on the Effluent Limitations and Monitoring Page(s).
DWR or"the Division"
The Division of Water Resources,Department of Environmental Quality.
Effluent
Wastewater discharged following all treatment processes from a water pollution control facility or other point source
whether treated or untreated.
EMC
The North Carolina Environmental Management Commission
EPA
The United States Environmental Protection Agency
Facility Closure
Cessation of all activities that require coverage under this NPDES permit. Completion of facility closure will allow this
permit to be rescinded.
Geometric Mean
The Nth root of the product of the individual values where N=the number of individual values. For purposes of
calculating the geometric mean,values of"0"(or"<[detection level]")shall be considered= 1.
Grab Sample
Individual samples of at least 100 mL collected over a period of time not exceeding 15 minutes.Grab samples can be
collected manually.Grab samples must be representative of the discharge(or the receiving stream, for instream
samples).
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 3 of 18
Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the CWA.
Instantaneous flow measurement
The flow measured during the minimum time required for the flow measuring device or method to produce a result in
that instance. To the extent practical,instantaneous flow measurements coincide with the collection of any grab
samples required for the same sampling period so that together the samples and flow are representative of the discharge
during that sampling period.
Monthly Average(concentration limit)
The arithmetic mean of all"daily discharges"of a pollutant measured during the calendar month. In the case of fecal
coliform or other bacterial parameters or indicators,the geometric mean of such discharges.
Permit Issuing Authority
The Director of the Division of Water Resources.
Quarterly Average(concentration limit)
The arithmetic mean of all samples taken over a calendar quarter.
Severe property damage
Substantial physical damage to property,damage to the treatment facilities which causes them to become inoperable,or
substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a
bypass. Severe property damage excludes economic loss caused by delays in production.
Toxic Pollutant:
Any pollutant listed as toxic under Section 307(a)(1)of the CWA.
Upset
An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with
permit effluent limitations and/or monitoring requirements.An upset does not include noncompliance caused by
operational error,improperly designed treatment facilities,inadequate treatment facilities, lack of preventive
maintenance,or careless or improper operation.
Weekly Average(concentration limit)
The arithmetic mean of all"daily discharges"of a pollutant measured during the calendar week. In the case of fecal
coliform or other bacterial parameters or indicators,the geometric mean of such discharges.
Section B. General Conditions
1. Duty to Comply
The Permittee must comply with all conditions of this permit.Any permit noncompliance constitutes a violation of
the CWA and is grounds for enforcement action;for permit termination,revocation and reissuance,or
modification;or denial of a permit renewal application[40 CFR 122.41].
a. The Permittee shall comply with effluent standards or prohibitions established under section 307(a)of the
CWA for toxic pollutants and with standards for sewage sludge use or disposal established under section
405(d)of the CWA within the time provided in the regulations that establish these standards or prohibitions or
standards for sewage sludge use or disposal,even if the permit has not yet been modified to incorporate the
requirement.
b. The CWA provides that any person who violates section[s] 301,302,306,307,308,318 or 405 of the Act,or
any permit condition or limitation implementing any such sections in a permit issued under section 402,or any
requirement imposed in a pretreatment program approved under sections 402(a)(3)or 402(b)(8)of the Act,is
subject to a civil penalty not to exceed$37,500 per day for each violation. [33 USC 1319(d)and 40 CFR
122.41(a)(2)]
c. The CWA provides that any person who negligently violates sections 301,302,306,307,308,318,or 405 of
the Act,or any condition or limitation implementing any of such sections in a permit issued under section 402
of the Act,or any requirement imposed in a pretreatment program approved under section 402(a)(3)or
402(b)(8)of the Act,is subject to criminal penalties of$2,500 to$25,000 per day of violation,or
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 4 of 18
imprisonment of not more than 1 year,or both. In the case of a second or subsequent conviction for a negligent
violation,a person shall be subject to criminal penalties of not more than$50,000 per day of violation,or by
imprisonment of not more than 2 years,or both. [33 USC 1319(c)(1)and 40 CFR 122.41(a)(2)]
d. Any person who knowingly violates such sections,or such conditions or limitations is subject to criminal
penalties of$5,000 to$50,000 per day of violation,or imprisonment for not more than 3 years,or both. In the
case of a second or subsequent conviction for a knowing violation,a person shall be subject to criminal
penalties of not more than$100,000 per day of violation,or imprisonment of not more than 6 years,or both.
[33 USC 1319(c)(2)and 40 CFR 122.41(a)(2)]
e. Any person who knowingly violates section 301,302,303,306,307,308,318 or 405 of the Act,or any permit
condition or limitation implementing any of such sections in a permit issued under section 402 of the Act,and
who knows at that time that he thereby places another person in imminent danger of death or serious bodily
injury,shall,upon conviction,be subject to a fine of not more than$250,000 or imprisonment of not more than
15 years,or both.In the case of a second or subsequent conviction for a knowing endangerment violation,a
person shall be subject to a fine of not more than$500,000 or by imprisonment of not more than 30 years,or
both.An organization,as defined in section 309(c)(3)(B)(iii)of the CWA,shall,upon conviction of violating
the imminent danger provision,be subject to a fine of not more than$1,000,000 and can be fined up to
$2,000,000 for second or subsequent convictions. [40 CFR 122.41(a)(2)]
f. Under state law,a civil penalty of not more than$25,000 per violation may be assessed against any person
who violates or fails to act in accordance with the terms,conditions,or requirements of a permit. [North
Carolina General Statutes§ 143-215.6A]
g. Any person may be assessed an administrative penalty by the Administrator for violating section 301,302,
306,307,308,318 or 405 of this Act,or any permit condition or limitation implementing any of such sections
in a permit issued under section 402 of this Act.Administrative penalties for Class I violations are not to
exceed$16,000 per violation,with the maximum amount of any Class I penalty assessed not to exceed
$37,500.Penalties for Class II violations are not to exceed$16,000 per day for each day during which the
violation continues,with the maximum amount of any Class II penalty not to exceed$177,500. [33 USC
1319(g)(2)and 40 CFR 122.41(a)(3)]
2. Duty to Mitigate
The Permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this permit with a reasonable likelihood of adversely affecting human health or the environment[40
CFR 122.41(d)].
3. Civil and Criminal Liability
Except as provided in permit conditions on"Bypassing"(Part II.C.4),"Upsets"(Part II.C.5)and"Power Failures"
(Part II.C.7),nothing in this permit shall be construed to relieve the Permittee from any responsibilities,liabilities,
or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act, 33 USC
1319. Furthermore,the Permittee is responsible for consequential damages,such as fish kills,even though the
responsibility for effective compliance may be temporarily suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee
from any responsibilities, liabilities,or penalties to which the Permittee is or may be subject to under NCGS 143-
215.75 et seq.or Section 311 of the Federal Act,33 USG 1321. Furthermore,the Permittee is responsible for
consequential damages,such as fish kills,even though the responsibility for effective compliance may be
temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal property,or any exclusive
privileges,nor does it authorize any injury to private property or any invasion of personal rights,nor any
infringement of Federal,State or local laws or regulations[40 CFR 122.41(g)].
6. Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 5 of 18
7. Severability
The provisions of this permit are severable.If any provision of this permit,or the application of any provision of
the application of such provision to other circumstances,and the
this permit to any circumstances,is held invalid, pp
remainder of this permit,shall not be affected thereby[NCGS 150B-23].
8. Duty to Provide Information
The Permittee shall furnish to the Permit Issuing Authority,within a reasonable time,any information which the
Permit Issuing Authority may request to determine whether cause exists for modifying,revoking and reissuing,or
terminating this permit or to determine compliance with this permit.The Permittee shall also furnish to the Permit
Issuing Authority upon request,copies of records required by this permit[40 CFR 122.41(h)].
9. Duty to Reapply
If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit,the
Permittee must apply for and obtain a new permit[40 CFR 122.41(b)].
10. Expiration of Permit
The Permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to
discharge beyond the expiration date,the Permittee shall submit such information,forms,and fees as are required
by the agency authorized to issue permits no later than 180 days prior to the expiration date unless permission for a
later date has been granted by the Director.(The Director shall not grant permission for applications to be
submitted later than the expiration date of the existing permit.)[40 CFR 122.21(d)]Any Permittee that has not
requested renewal at least 180 days prior to expiration,or any Permittee that does not have a permit after the
expiration and has not requested renewal at least 180 days prior to expiration,will subject the Permittee to
enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et.seq.
11. Signatory Requirements
All applications,reports,or information submitted to the Permit Issuing Authority shall be signed and certified[40
CFR 122.41(k)].
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer.For the purpose of this Section,a responsible
corporate officer means: (a)a president,secretary,treasurer or vice president of the corporation in charge
of a principal business function,or any other person who performs similar policy or decision making
functions for the corporation,or(b)the manager of one or more manufacturing,production,or operating
facilities,provided,the manager is authorized to make management decisions which govern the operation
of the regulated facility including having the explicit or implicit duty of making major capital investment
recommendations,and initiating and directing other comprehensive measures to assure long term
environmental compliance with environmental laws and regulations;the manager can ensure that the
necessary systems are established or actions taken to gather complete and accurate information for permit
application requirements;and where authority to sign documents has been assigned or delegated to the
manager in accordance with corporate procedures .
(2) For a partnership or sole proprietorship: by a general partner or the proprietor,respectively;or
(3) For a municipality,State,Federal,or other public agency: by either a principal executive officer or
ranking elected official[40 CFR 122.22].
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be
signed by a person described in paragraph a.above or by a duly authorized representative of that person.A
person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the overall operation
of the regulated facility or activity,such as the position of plant manager,operator of a well or well field,
superintendent,a position of equivalent responsibility,or an individual or position having overall
responsibility for environmental matters for the company.(A duly authorized representative may thus be
either a named individual or any individual occupying a named position.);and
(3) The written authorization is submitted to the Permit Issuing Authority[40 CFR 122.22]
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 6 of 18
c. Changes to authorization: If an authorization under paragraph(b)of this section is no longer accurate because
a different individual or position has responsibility for the overall operation of the facility,a new authorization
satisfying the requirements of paragraph(b)of this section must be submitted to the Director prior to or
together with any reports,information,or applications to be signed by an authorized representative[40 CFR
122.22]
d. Certification.Any person signing a document under paragraphs a.or b.of this section 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."
12. Permit Actions
This permit may be modified,revoked and reissued,or terminated for cause.The filing of a request by the
Permittee for a permit modification,revocation and reissuance,or termination,or a notification of planned changes
or anticipated noncompliance does not stay any permit condition[40 CFR 122.41(f)].
13. Permit Modification,Revocation and Reissuance,or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit,
revoking and reissuing the permit,or terminating the permit as allowed by the laws,rules,and regulations
contained in Title 40,Code of Federal Regulations,Parts 122 and 123;Title 15A of the North Carolina
Administrative Code,Subchapter 02H.0100;and North Carolina General Statute 143.215.1 et. al.
14. Annual Administering and Compliance Monitoring Fee Requirements
The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being
billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A NCAC 02H.0105(b)(2)
may cause this Division to initiate action to revoke the permit.
Section C. Operation and Maintenance of Pollution Controls
1. Certified Operator
Owners of classified water pollution control systems must designate operators,certified by the Water Pollution
Control System Operators Certification Commission(WPCSOCC),of the appropriate type and grade for the
system,and,for each classification must[T15A NCAC 08G.0201]:
a. designate one Operator In Responsible Charge(ORC)who possesses a valid certificate of the type and grade at
least equivalent to the type and grade of the system;
b. designate one or more Back-up Operator(s)in Responsible Charge(Back-up ORCs)who possesses a valid
certificate of the type of the system and no more than one grade less than the grade of the system,with the
exception of no backup operator in responsible charge is required for systems whose minimum visitation
requirements are twice per year;and
c. submit a signed completed"Water Pollution Control System Operator Designation Form"to the Commission
(or to the local health department for owners of subsurface systems)countersigned by the designated certified
operators,designating the Operator in Responsible Charge(ORC)and the Back-up Operator in Responsible
Charge(Back-up ORC):
(1) 60 calendar days prior to wastewater or residuals being introduced into a new system;or
(2) within 120 calendar days following:
➢ receiving notification of a change in the classification of the system requiring the designation of a new
Operator in Responsible Charge(ORC)and Back-up Operator in Responsible Charge(Back-up ORC)
of the proper type and grade;or
➢ a vacancy in the position of Operator in Responsible Charge(ORC)or Back-up Operator in
Responsible Charge(Back-up ORC).
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 7 of 18
(3) within seven calendar days of vacancies in both ORC and Back-up ORC positions replacing or designating
at least one of the responsibilities.
The ORC of each Class I facility(or the Back-up ORC,when acting as surrogate for the ORC)must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system;the treatment
facility must be visited at least weekly
• Comply with all other conditions of 15A NCAC 08G .0204.
The ORC of each Class II,III and IV facility(or the Back-up ORC,when acting as surrogate for the ORC)must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system;the treatment
facility must be visited at least five days per week,excluding holidays
➢ Properly manage and document daily operation and maintenance of the facility
➢ Comply with all other conditions of 15A NCAC 08G .0204.
2. Proper Operation and Maintenance
The Permittee shall at all times properly operate and maintain all facilities and systems of treatment and control
(and related appurtenances)which are installed or used by the Permittee to achieve compliance with the conditions
of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality
assurance procedures.This provision requires the Permittee to install and operate backup or auxiliary facilities only
when necessary to achieve compliance with the conditions of the permit[40 CFR 122.41(e)].
NOTE: Properly and officially designated operators are fully responsible for all proper operation and maintenance
of the facility,and all documentation required thereof,whether acting as a contract operator[subcontractor] or a
member of the Permittee's staff.
3. Need to Halt or Reduce not a Defense
It shall not be a defense for a Permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit[40 CFR 122.41(c)].
4. Bypassing of Treatment Facilities
a. Bypass not exceeding limitations[40 CFR 122.41(m)(2)]
The Permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded,but
only if it also is for essential maintenance to assure efficient operation.These bypasses are not subject to the
provisions of Paragraphs b.and c.of this section.
b. Notice[40 CFR 122.41(m)(3)]
(1) Anticipated bypass. If the Permittee knows in advance of the need for a bypass,it shall submit prior notice,
if possible at least ten days before the date of the bypass; including an evaluation of the anticipated quality
and effect of the bypass.
(2) Unanticipated bypass.The Permittee shall submit notice of an unanticipated bypass as required in Part
II.E.6. (24-hour notice).
c. Prohibition of Bypass
(1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for bypass,unless:
(A) Bypass was unavoidable to prevent loss of life,personal injury or severe property damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime.This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance;and
(C) The Permittee submitted notices as required under Paragraph b.of this section.
(2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for a bypass as provided in any current or future system-wide collection system
permit associated with the treatment facility.
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 8 of 18
(3) The Permit Issuing Authority may approve an anticipated bypass,after considering its adverse effects,if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c.
(1)of this section.
5. Upsets
a. Effect of an upset[40 CFR 122.41(n)(2)]: An upset constitutes an affirmative defense to an action brought for
noncompliance with such technology based permit effluent limitations if the requirements of paragraph b.of
this condition are met.No determination made during administrative review of claims that noncompliance was
caused by upset,and before an action for noncompliance,is final administrative action subject to judicial
review.
b. Conditions necessary for a demonstration of upset:Any Permittee who wishes to establish the affirmative
defense of upset shall demonstrate,through properly signed,contemporaneous operating logs,or other relevant
evidence that:
(1)An upset occurred and that the Permittee can identify the cause(s)of the upset;
(2)The Permittee facility was at the time being properly operated;and
(3)The Permittee submitted notice of the upset as required in Part II.E.6.(b)of this permit.
(4)The Permittee complied with any remedial measures required under Part II.B.2.of this permit.
c. Burden of proof[40 CFR 122.41(n)(4)]: The Permittee seeking to establish the occurrence of an upset has
the burden of proof in any enforcement proceeding.
6. Removed Substances
Solids,sludges,filter backwash,or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable waters of the United States except as permitted
by the Commission.The Permittee shall comply with all applicable state and Federal regulations governing the
disposal of sewage sludge,including 40 CFR 503,Standards for the Use and Disposal of Sewage Sludge;40 CFR
Part 258,Criteria For Municipal Solid Waste Landfills;and 15A NCAC Subchapter 2T,Waste Not Discharged To
Surface Waters.The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use
or disposal practices.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards(as required by 15A NCAC O2H.0124)to
prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means
of alternate power sources,standby generators or retention of inadequately treated effluent.
Section D. Monitoring and Records
Representative Sampling
Samples collected and measurements taken,as required herein,shall be representative of the permitted discharge.
Samples collected at a frequency less than daily shall be taken on a day and time that is representative of the
discharge for the period the sample represents.All samples shall be taken at the monitoring points specified in this
permit and,unless otherwise specified,before the effluent joins or is diluted by any other wastestream,body of
water,or substance. Monitoring points shall not be changed without notification to and the approval of the Permit
Issuing Authority[40 CFR 122.41(j)].
2. Reporting
Monitoring results obtained during the previous month(s)shall be summarized for each month and reported on a
monthly Discharge Monitoring Report(DMR)Form(MR 1, 1.1,2,3)or alternative forms approved by the
Director,postmarked no later than the last calendar day of the month following the completed reporting period.
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.Duplicate signed copies of these,
and all other reports required herein,shall be submitted to the following address:
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 9 of 18
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION:Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
3. Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges.The
devices shall be installed,calibrated and maintained to ensure that the accuracy of the measurements is consistent
with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10%from the true discharge rates throughout the range of expected discharge
volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained
to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device.
The Director shall approve the flow measurement device and monitoring location prior to installation.
Once-through condenser cooling water flow monitored by pump logs,or pump hour meters as specified in Part I of
this permit and based on the manufacturer's pump curves shall not be subject to this requirement.
4. Test Procedures
Laboratories used for sample analysis must be certified by the Division. Permittees should contact the Division's
Laboratory Certification Section(919 733-3908)or visit https://deq.nc.gov/about/divisions/water-resources/water-
resources-data/water-sciences-home-page/laboratory-certification-branch for information regarding laboratory
certifications.
Facilities whose personnel are conducting testing of field-certified parameters only must hold the appropriate field
parameter laboratory certifications.
Test procedures for the analysis of pollutants shall conform to the EMC regulations(published pursuant to NCGS
143-215.63 et. seq.),the Water and Air Quality Reporting Acts,and to regulations published pursuant to Section
304(g),33 USC 1314,of the CWA(as amended),and 40 CFR 136;or in the case of sludge use or disposal,
approved under 40 CFR 136,unless otherwise specified in 40 CFR 503,unless other test procedures have been
specified in this permit[40 CFR 122.41].
To meet the intent of the monitoring required by this permit,all test procedures must produce minimum detection
and reporting levels that are below the permit discharge requirements and all data generated must be reported down
to the minimum detection or lower reporting level of the procedure. If no approved methods are determined
capable of achieving minimum detection and reporting levels below permit discharge requirements,then the most
sensitive(method with the lowest possible detection and reporting level)approved method must be used.
5. Penalties for Tampering
The CWA provides that any person who falsifies,tampers with,or knowingly renders inaccurate,any monitoring
device or method required to be maintained under this permit shall,upon conviction,be punished by a fine of not
more than$10,000 per violation,or by imprisonment for not more than two years per violation,or by both. If a
conviction of a person is for a violation committed after a first conviction of such person under this paragraph,
punishment is a fine of not more than$20,000 per day of violation,or by imprisonment of not more than 4 years,
or both[40 CFR 122.41].
6. Records Retention
Except for records of monitoring information required by this permit related to the Permittee's sewage sludge use
and disposal activities,which shall be retained for a period of at least five years(or longer as required by 40 CFR
503),the Permittee shall retain records of all monitoring information,including:
D. all calibration and maintenance records
D all original strip chart recordings for continuous monitoring instrumentation
➢ copies of all reports required by this permit
➢ copies of all data used to complete the application for this permit
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 10 of 18
These records or copies shall be maintained for a period of at least 3 years from the date of the sample,
measurement,report or application.This period may be extended by request of the Director at any time[40 CFR
122.41].
7. Recording Results
For each measurement or sample taken pursuant to the requirements of this permit,the Permittee shall record the
following information[40 CFR 122.41]:
a. The date,exact place,and time of sampling or measurements;
b. The individual(s)who performed the sampling or measurements;
c. The date(s)analyses were performed;
d. The individual(s)who performed the analyses;
e. The analytical techniques or methods used;and
f. The results of such analyses.
8. Inspection and Entry
The Permittee shall allow the Director,or an authorized representative(including an authorized contractor acting as
a representative of the Director),upon the presentation of credentials and other documents as may be required by
law,to;
a. Enter,at reasonable times,upon the Permittee's premises where a regulated facility or activity is located or
conducted,or where records must be kept under the conditions of this permit;
b. Have access to and copy,at reasonable times,any records that must be kept under the conditions of this permit;
c. Inspect at reasonable times any facilities,equipment(including monitoring and control equipment),practices,
or operations regulated or required under this permit;and
d. Sample or monitor at reasonable times,for the purposes of assuring permit compliance or as otherwise
authorized by the CWA,any substances or parameters at any location[40 CFR 122.41(i)].
Section E Reporting Requirements
1. Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit.The discharge of
any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute
a violation of the permit.
2. Planned Changes
The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions
to the permitted facility[40 CFR 122.41(1)].Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR
122.29(b);or
b. The alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged.This notification applies to pollutants subject neither to effluent limitations in the permit,nor to
notification requirements under 40 CFR 122.42(a)(1);or
c. The alteration or addition results in a significant change in the Permittee's sludge use or disposal practices,and
such alteration,addition or change may justify the application of permit conditions that are different from or
absent in the existing permit,including notification of additional use or disposal sites not reported during the
permit application process or not reported pursuant to an approved land application plan.
3. Anticipated Noncompliance
The Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other
activities that might result in noncompliance with the permit[40 CFR 122.41(1)(2)].
4. Transfers
This permit is not transferable to any person without prior written notice to and approval from the Director in
accordance with 40 CFR 122.61. The Director may condition approval in accordance with NCGS 143-215.1,in
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 11of18
particular NCGS 143-215.1(b)(4)b.2.,and may require modification or revocation and reissuance of the permit,or
a minor modification,to identify the new permittee and incorporate such other requirements as may be necessary
under the CWA[40 CFR 122.41(1)(3), 122.61] or state statute.
5. Monitoring Reports
Monitoring results shall be reported at the intervals specified elsewhere in this permit[40 CFR 122.41(1)(4)].
a. Monitoring results must be reported on a Discharge Monitoring Report(DMR)(See Part II.D.2)or forms
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequently than required by this permit using test procedures
approved under 40 CFR Part 136 and at a sampling location specified in this permit or other appropriate
instrument governing the discharge,the results of such monitoring shall be included in the calculation and
reporting of the data submitted on the DMR.
6. Twenty-four Hour Reporting
a. The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that
potentially threatens public health or the environment. Any information shall be provided orally within 24
hours from the time the Permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the Permittee becomes aware of the circumstances.The written submission
shall contain a description of the noncompliance,and its cause;the period of noncompliance,including exact
dates and times,and if the noncompliance has not been corrected,the anticipated time it is expected to
continue;and steps taken or planned to reduce,eliminate,and prevent reoccurrence of the noncompliance[40
CFR 122.41(1)(6)].
b. The Director may waive the written report on a case-by-case basis for reports under this section if the oral
report has been received within 24 hours.
c. Occurrences outside normal business hours may also be reported to the Division's Emergency Response
personnel at(800)858-0368 or(919)733-3300.
7. Other Noncompliance
The Permittee shall report all instances of noncompliance not reported under Part II.E.5 and 6.of this permit at the
time monitoring reports are submitted.The reports shall contain the information listed in Part II.E.6.of this permit
[40 CFR 122.41(1)(7)].
8. Other Information
Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application,or submitted
incorrect information in a permit application or in any report to the Director,it shall promptly submit such facts or
information[40 CFR 122.41(1)(8)].
9. Noncompliance Notification
The Permittee shall report by telephone to either the central office or the appropriate regional office of the Division
as soon as possible,but in no case more than 24 hours or on the next working day following the occurrence or first
knowledge of the occurrence of any of the following:
a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic,such as the dumping of the contents of a sludge
digester;the known passage of a slug of hazardous substance through the facility;or any other unusual
circumstances.
b. Any process unit failure,due to known or unknown reasons,that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps,aerators,compressors,etc.
c. Any failure of a pumping station,sewer line,or treatment facility resulting in a by-pass without treatment of all
or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report within 5 days following first
knowledge of the occurrence.Also see reporting requirements for municipalities in Part IV.C.2.c.of this permit.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3(a)(2)or Section 308 of the Federal Act,33
USC 1318,all reports prepared in accordance with the terms shall be available for public inspection at the offices
Version 11/09/2011.2

DocuSign Envelope ID.2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
P
NPDES Permit Standard Conditions
Page 12 of 18
of the Division. As required by the Act,effluent data shall not be considered confidential. Knowingly making any
false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143-
215.1(b)(2)or in Section 309 of the Federal Act.
11. Penalties for Falsification of Reports
The CWA provides that any person who knowingly makes any false statement,representation,or certification in
any record or other document submitted or required to be maintained under this permit,including monitoring
reports or reports of compliance or noncompliance shall,upon conviction,be punished by a fine of not more than
$25,000 per violation,or by imprisonment for not more than two years per violation,or by both[40 CFR 122.41].
12. Annual Performance Reports
Permittees who own or operate facilities that primarily collect or treat municipal or domestic wastewater and have
an average annual flow greater than 200,000 gallons per day shall provide an annual report to the Permit Issuing
Authority and to the users/customers served by the Permittee(NCGS 143-215.1C).The report shall summarize the
performance of the collection or treatment system,as well as the extent to which the facility was compliant with
applicable Federal or State laws,regulations and rules pertaining to water quality.The report shall be provided no
later than sixty days after the end of the calendar or fiscal year,depending upon which annual period is used for
evaluation.
The report shall be sent to:
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION:Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 13 of 18
PART III
OTHER REQUIREMENTS
Section A. Construction
a. The Permittee shall not commence construction of wastewater treatment facilities,nor add to the plant's treatment
capacity,nor change the treatment process(es)utilized at the treatment plant unless(1)the Division has issued an
Authorization to Construct(AtC)permit or(2)the Permittee is exempted from such AtC permit requirements
under Item b.of this Section.
b. In accordance with NCGS 143-215.1(a5)[SL 2011-394],no permit shall be required to enter into a contract for the
construction,installation,or alteration of any treatment work or disposal system or to construct,install,or alter any
treatment works or disposal system within the State when the system's or work's principle function is to conduct,
treat,equalize,neutralize,stabilize,recycle,or dispose of industrial waste or sewage from an industrial facility and
the discharge of the industrial waste or sewage is authorized under a permit issued for the discharge of the
industrial waste or sewage into the waters of the State. Notwithstanding the above,the permit issued for the
discharge may be modified if required by federal regulation.
c. Issuance of an AtC will not occur until Final Plans and Specifications for the proposed construction have been
submitted by the Permittee and approved by the Division.
Section B. Groundwater Monitoring
The Permittee shall,upon written notice from the Director,conduct groundwater monitoring as may be required to
determine the compliance of this NPDES permitted facility with the current groundwater standards.
Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe(40 CFR 122.42):
a. That any activity has occurred or will occur which would result in the discharge,on a routine or frequent basis,of
any toxic pollutant which is not limited in the permit,if that discharge will exceed the highest of the following
"notification levels";
(1) One hundred micrograms per liter(100 µg/L);
(2) Two hundred micrograms per liter(200 µg/L)for acrolein and acrylonitrile; five hundred micrograms per liter
(500 µg/L)for 2,4-dinitrophenot and for 2-methyl-4,6-dinitrophenol;and one milligram per liter(1 mg/L)for
antimony;
(3) Five times the maximum concentration value reported for that pollutant in the permit application.
b. That any activity has occurred or will occur which would result in any discharge,on a non-routine or infrequent
basis,of a toxic pollutant which is not limited in the permit,if that discharge will exceed the highest of the
following"notification levels";
(1) Five hundred micrograms per liter(500 µg/L);
(2) One milligram per liter(1 mg/L)for antimony;
(3) Ten times the maximum concentration value reported for that pollutant in the permit application.
Section D. Facility Closure Requirements
The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system covered
by this permit.The Division may require specific measures during deactivation of the system to prevent adverse
impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit continue at the
permitted facility.
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 14 of 18
PART IV
SPECIAL CONDITIONS FOR MUNICIPAL FACILITIES
Section A. Definitions
In addition to the definitions in Part II of this permit,the following definitions apply to municipal facilities:
Indirect Discharge or Industrial User
Any non-domestic source that discharges wastewater containing pollutants into a POTW regulated under section
307(b),(c)or(d)of the CWA. [40 CFR 403.3 (i)and(j)and 15A NCAC 02H .0903(b)(11)]
Interference
Inhibition or disruption of the POTW treatment processes;operations;or its sludge process,use,or disposal which
causes or contributes to a violation of any requirement of the Permittee's(or any satellite POTW's if different from the
Permittee)NPDES,collection system,or non-discharge permit or prevents sewage sludge use or disposal in
compliance with specified applicable State and Federal statutes,regulations,or permits. [15A NCAC 02H
.0903(b)(14)]
Pass Through
A discharge which exits the POTW into waters of the State in quantities or concentrations which,alone or with
discharges from other sources,causes a violation,including an increase in the magnitude or duration of a violation,of
the Permittee's(or any satellite POTW's,if different from the Permittee)NPDES,collection system,or non-discharge
permit. [15A NCAC 02H.0903(b)(23)]
Publicly Owned Treatment Works(POTW)
A treatment works as defined by Section 212 of the CWA,which is owned by a State or local government organization.
This definition includes any devices and systems used in the storage,treatment,recycling and reclamation of municipal
sewage or industrial wastes of a liquid nature. It also includes the collection system,as defined in 15A NCAC 2T
.0402,only if it conveys wastewater to a POTW treatment plant. The term also means the local government
organization,or municipality,as defined in section 502(4)of the CWA,which has jurisdiction over indirect discharges
to and the discharges from such a treatment works. In this context,the organization may be the owner of the POTW
treatment plant or the owner of the collection system into which an indirect discharger discharges.This second type of
POTW may be referred to as a"satellite POTW organization."[15A NCAC 02H.0903(b)(26)]
"Significant Industrial User"or"SIU"
An Industrial User that discharges wastewater into a publicly owned treatment works and that[15A NCAC 02H
.0903(b)(33)]:
1. Discharges an average of 25,000 gallons per day or more of process wastewater to the POTW(excluding sanitary,
noncontact cooling and boiler blowdown wastewaters);or
2. Contributes process wastewater which makes up five percent or more of the NPDES or non-discharge permitted
flow limit or organic capacity of the POTW treatment plant. In this context,organic capacity refers to BOD,TSS
and ammonia;or
3. Is subject to categorical standards under 40 CFR Part 403.6 and 40 CFR Parts 405-471;or
4. Is designated as such by the Permittee on the basis that the Industrial User has a reasonable potential for adversely
affecting the POTW's operation or for violating any pretreatment standard or requirement,or the POTW's effluent
limitations and conditions in its NPDES or non-discharge permit,or to limit the POTW's sludge disposal options;
5. Subject to approval under 15A NCAC 02H .0907(b),the Permittee may determine that an Industrial User meeting
the criteria in paragraphs 1 or 2 of this definition above has no reasonable potential for adversely affecting the
POTW's operation or for violating any pretreatment standard or requirement,the POTW's effluent limitations and
conditions in its NPDES or non-discharge permit,or to limit the POTW's sludge disposal options,and thus is not a
Significant Industrial User(SIU);or
6. Subject to approval under 15A NCAC 02H .0907(b),the Permittee may determine that an Industrial User meeting
the criteria in paragraph 3 of this definition above meets the requirements of 40 CFR Part 403.3(v)(2)and thus is a
non-significant categorical Industrial User.
Section B. Publicly Owned Treatment Works(POTWs)
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 15 of 18
All POTWs must provide adequate notice to the Director of the following[40 CFR 122.42(b)]:
I. Any new introduction of pollutants into the POTW from an indirect discharger,regardless of the means of
transport,which would be subject to section 301 or 306 of CWA if it were directly discharging those pollutants;
and
2. Any substantial change in the volume or character of pollutants being introduced by an indirect discharger as
influent to that POTW at the time of issuance of the permit.
3. For purposes of this paragraph,adequate notice shall include information on(1)the quality and quantity of effluent
introduced into the POTW,and(2)any anticipated impact that may result from the change of the quantity or
quality of effluent to be discharged from the POTW.
Section C. Municipal Control of Pollutants from Industrial Users.
1. Effluent limitations are listed in Part I of this permit.Other pollutants attributable to inputs from Industrial Users
discharging to the POTW may be present in the Permittee's discharge.At such time as sufficient information
becomes available to establish limitations for such pollutants,this permit may be revised to specify effluent
limitations for any or all of such other pollutants in accordance with best practicable technology or water quality
standards.
2. Prohibited Discharges
a. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibition against the
introduction of pollutants or discharges into the waste treatment system or waste collection system which
cause or contribute to Pass Through or Interference as defined in 15A NCAC 02H.0900 and 40 CFR 403. [40
CFR 403.5(a)(1)]
b. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibitions against the
introduction of the following wastes in the waste treatment or waste collection system[40 CFR 403.5(b)]:
(1) Pollutants which create a fire or explosion hazard in the POTW,including,but not limited to,
wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade
using the test methods specified in 40 CFR 261.21;
(2) Pollutants which cause corrosive structural damage to the POTW,but in no case discharges with pH lower
than 5.0,unless the works is specifically designed to accommodate such discharges;
(3) Solid or viscous pollutants in amounts which cause obstruction to the flow in the POTW resulting in
Interference;
(4) Any pollutant,including oxygen demanding pollutants(BOD,etc.)released in a Discharge at a flow rate
and/or pollutant concentration which will cause Interference with the POTW;
(5) Heat in amounts which will inhibit biological activity in the POTW resulting in Interference,but in no
case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C(104°F)
unless the Division,upon request of the POTW,approves alternate temperature limits;
(6) Petroleum oil,non-biodegradable cutting oil,or products of mineral oil origin in amounts that will cause
Interference or Pass Through;
(7) Pollutants which result in the presence of toxic gases,vapors,or fumes within the POTW in a quantity that
may cause acute worker health and safety problems;or
(8) Any trucked or hauled pollutants,except at discharge points designated by the POTW.
c. The Permittee shall investigate the source of all discharges into the POTW,including slug loads and other
unusual discharges,which have the potential to adversely impact the Permittee's Pretreatment Program and/or
the operation of the POTW.
The Permittee shall report such discharges into the POTW to the Director or the appropriate Regional Office.
Any information shall be provided orally within 24 hours from the time the Permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the Permittee becomes
aware of the circumstances.The written submission shall contain a description of the discharge;the
investigation into possible sources;the period of the discharge,including exact dates and times;if the
discharge has not ceased,the anticipated time it is expected to continue;and steps taken or planned to reduce,
eliminate,and prevent reoccurrence of the noncompliance,
Version 11/09/2011.2

DocuSign Envelope ID 2CEF4830-9C3E-4EC4-AD5D-79871 DAF5C25
NPDES Permit Standard Conditions
Page 16 of 18
3. With regard to the effluent requirements listed in Part I of this permit,it may be necessary for the Permittee to
supplement the requirements of the Federal Pretreatment Standards(40 CFR,Part 403)to ensure compliance by
the Permittee with all applicable effluent limitations. Such actions by the Permittee may be necessary regarding
some or all of the industries discharging to the municipal system.
4. The Permittee shall require any Industrial User(IU)discharging to the POTW to meet Federal Pretreatment
Standards developed under Section 307(b)of the Act as amended(which includes categorical standards and
specific local limits,best management practices and narrative requirements). Prior to accepting wastewater from
any Significant Industrial User(SIU),the Permittee shall either develop and submit to the Division a new
Pretreatment Program or,as necessary,a modification of an existing Pretreatment Program,for approval as
required under section D below as well as 15A NCAC 02H .0907(a)and(b). [40 CFR 122.44(j)(2)]
5. This permit shall be modified,or alternatively,revoked and reissued,to incorporate or modify an approved POTW
Pretreatment Program or to include a compliance schedule for the development of a POTW Pretreatment Program
as required under Section 402(b)(8)of the CWA and implementing regulations or by the requirements of the
approved State pretreatment program,as appropriate.
Section D. Pretreatment Programs
Under authority of sections 307(b)and(c)and 402(b)(8)of the CWA and implementing regulations 40 CFR 403,
North Carolina General Statute 143-215.3(14)and implementing regulations 15A NCAC 02H .0900,and in accordance
with the approved pretreatment program,all provisions and regulations contained and referenced in the pretreatment
program submittal are an enforceable part of this permit. [40 CFR 122.44(j)(2)]
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8)of the CWA,40
CFR 403, 15A NCAC 02H.0900,and the legal authorities,policies,procedures,and financial provisions contained in
its pretreatment program submission and Division approved modifications thereof. Such operation shall include but is
not limited to the implementation of the following conditions and requirements.Terms not defined in Part II or Part IV
of this permit are as defined in 15A NCAC 02H .0903 and 40 CFR 403.3.
1. Sewer Use Ordinance(SUO)
The Permittee shall maintain adequate legal authority to implement its approved pretreatment program. [15A
NCAC 02H.0903(b)(32), .0905 and.0906(b)(1);40 CFR 403.8(f)(1)and 403.9(b)(1)and(2)]
2. Industrial Waste Survey(IWS)
The Permittee shall implement an IWS consisting of the survey of users of the POTW collection system or
treatment plant,as required by 40 CFR 403.8(f)(2)(i-iii)and 15A NCAC 02H.0905 [also 40 CFR 122.44(j)(1)],
including identification of all Industrial Users that may have an impact on the POTW and the character and amount
of pollutants contributed to the POTW by these Industrial Users and identification of those Industrial Users
meeting the definition of SIU.Where the Permittee accepts wastewater from one or more satellite POTWs,the
IWS for the Permittee shall address all satellite POTW services areas,unless the pretreatment program in those
satellite service areas is administered by a separate Permittee with an approved Pretreatment Program.The
Permittee shall submit a summary of its IWS activities to the Division at least once every five years,and as
required by the Division.The IWS submission shall include a summary of any investigations conducted under
paragraph C.2.c.of this Part. [15A NCAC 02H .0903(b)(13), .0905 and.0906(b)(2);40 CFR 403.8(f)(2)and 403.9]
3. Monitoring Plan
The Permittee shall implement a Division-approved Monitoring Plan for the collection of facility specific data to
be used in a wastewater treatment plant Headworks Analysis(HWA)for the development of specific pretreatment
local limits.Effluent data from the Plan shall be reported on the DMRs(as required by Parts II.D and II.E.5.). [15A
NCAC 02H.0903(b)(16),.0906(b)(3)and.0905]
4. Headworks Analysis(HWA)and Local Limits
The Permittee shall obtain Division approval of a HWA at least once every five years,and as required by the
Division. Within 180 days of the effective date of this permit(or any subsequent permit modification)the
Permittee shall submit to the Division a written technical evaluation of the need to revise local limits(i.e.,an
updated HWA or documentation of why one is not needed)[40 CFR 122.44].The Permittee shall develop,in
accordance with 40 CFR 403.5(c)and 15A NCAC 02H .0909,specific Local Limits to implement the prohibitions
listed in 40 CFR 403.5(a)and(b)and 15A NCAC 02H .0909.Pursuant to 40 CFR 403.5,local limits are
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 17 of 18
enforceable Pretreatment Standards as defined by 40 CFR 403.3(1). [15A NCAC 02H.0903(b)(10), .0905,and
.0906(b)(4)]
5. Industrial User Pretreatment Permits(IUP)&Allocation Tables
In accordance with NCGS 143-215.1,the Permittee shall issue to all Significant Industrial Users,permits for
operation of pretreatment equipment and discharge to the Permittee's collection system or treatment works.These
permits shall contain limitations,sampling protocols,reporting requirements,appropriate standard and special
conditions,and compliance schedules as necessary for the installation of treatment and control technologies to
assure that their wastewater discharge will meet all applicable pretreatment standards and requirements.The
Permittee shall maintain a current Allocation Table(AT)which summarizes the results of the HWA and the limits
from all IUPs.Permitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as
determined by the HWA. [15A NCAC 02H.0906(b)(6), .0909, .0916,and.0917;40 CFR 403.5,403.8(f)(1)(iii);
NCGS 143-215.67(a)]
6. Authorization to Construct(AtC)
The Permittee shall ensure that an Authorization to Construct permit(AtC)is issued to all applicable Industrial
PP
Users for the construction or modification of any pretreatment facility. Prior to the issuance of an AtC,the
proposed pretreatment facility and treatment process must be evaluated for its capacity to comply with all
Industrial User Pretreatment Permit(IUP)limitations. [15A NCAC 02H.0906(b)(7)and.0905;NCGS 143-
215.1(a)(8)]
7. POTW Inspection& Monitoring of their IUs
The Permittee shall conduct inspection,surveillance,and monitoring activities as described in its Division
approved pretreatment program in order to determine,independent of information supplied by Industrial Users,
compliance with applicable pretreatment standards. [15A NCAC 02H.0908(e);40 CFR 403.8(f)(2)(v)] The
Permittee must:
a. Inspect all Significant Industrial Users(SIUs)at least once per calendar year;
b. Sample all Significant Industrial Users(SIUs)at least once per calendar year for all SIU permit-limited
parameters including flow except as allowed under 15A NCAC .0908(e);and
c. At least once per year,document an evaluation of any non-significant categorical Industrial User for
compliance with the requirements in 40 CFR 403.3(v)(2),and either continue or revoke the designation as non-
significant.
8. IU Self Monitoring and Reporting
The Permittee shall require all Industrial Users to comply with the applicable monitoring and reporting
requirements outlined in the Division-approved pretreatment program,the industry's pretreatment permit,or in 15A
NCAC 02H.0908. [15A NCAC 02H .0906(b)(5)and .0905;40 CFR 403.8(f)(1)(v)and(2)(iii);40 CFR
122.44(j)(2)and 40 CFR 403.12]
9. Enforcement Response Plan(ERP)
The Permittee shall enforce and obtain appropriate remedies for violations of all pretreatment standards
promulgated pursuant to section 307(b)and(c)of the CWA(40 CFR 405 et.seq.),prohibitive discharge standards
as set forth in 40 CFR 403.5 and 15A NCAC 02H.0909,specific local limitations,and other pretreatment
requirements.All remedies,enforcement actions and other,shall be consistent with the Enforcement Response
Plan(ERP)approved by the Division. [15A NCAC 02H.0903(b)(7),.0906(b)(8)and.0905;40 CFR 403.8(f)(5)]
10. Pretreatment Annual Reports(PAR)
The Permittee shall report to the Division in accordance with 15A NCAC 02H.0908. In lieu of submitting annual
reports,Modified Pretreatment Programs developed under 15A NCAC 02H .0904(b)may be required to submit a
partial annual report or to meet with Division personnel periodically to discuss enforcement of pretreatment
requirements and other pretreatment implementation issues.
For all other active pretreatment programs,the Permittee shall submit two copies of a Pretreatment Annual Report
(PAR)describing its pretreatment activities over the previous calendar year to the Division at the following
address:
Version 11/09/2011.2

DocuSign Envelope ID:2CEF4830-9C3E-4EC4-AD5D-79871DAF5C25
NPDES Permit Standard Conditions
Page 18 of 18
NC DEQ/Division of Water Resources/Water Quality Permitting Section
Pretreatment,Emergency Response,and Collection Systems(PERCS)Unit
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
These reports shall be submitted by March 1 of each year and shall contain the following:
a. Narrative
A narrative summary detailing actions taken,or proposed,by the Permittee to correct significant non-
compliance and to ensure compliance with pretreatment requirements;
b. Pretreatment Program Summary(PPS)
A pretreatment program summary(PPS)on forms or in a format provided by the Division;
c. Significant Non-Compliance Report(SNCR)
A list of Industrial Users(IUs)in significant noncompliance(SNC)with pretreatment requirements,and the
nature of the violations on forms or in a format provided by the Division;
d. Industrial Data Summary Forms(IDSF)
Monitoring data from samples collected by both the POTW and the Significant Industrial Users(SIUs).These
analytical results must be reported on Industrial Data Summary Forms(IDSF)or on other forms or in a format
provided by the Division;
e. Other Information
Copies of the POTW's allocation table,new or modified enforcement compliance schedules,public notice of
IUs in SNC,a summary of data or other information related to significant noncompliance determinations for
IUs that are not considered SIUs,and any other information,upon request,which in the opinion of the Director
is needed to determine compliance with the pretreatment implementation requirements of this permit;
11. Public Notice
The Permittee shall publish annually a list of Industrial Users(IUs)that were in significant noncompliance(SNC)
as defined in the Permittee's Division-approved Sewer Use Ordinance with applicable pretreatment requirements
and standards during the previous twelve month period.This list shall be published within four months of the
applicable twelve-month period. [15A NCAC 02H.0903(b)(34), .0908(b)(5)and.0905 and 40 CFR
403.8(f)(2)(viii)]
12. Record Keeping
The Permittee shall retain for a minimum of three years records of monitoring activities and results,along with
support information including general records,water quality records,and records of industrial impact on the
POTW and shall retain all other Pretreatment Program records as required by 15A NCAC 02H .0908(f). [15A
NCAC 02H.0908(f);40 CFR 403.12(o)]
13. Pretreatment Program Resources
The Permittee shall maintain adequate funding and qualified personnel to accomplish the objectives of its approved
pretreatment program.and retain a written description of those current levels of inspection. [15A NCAC 02H
.0906(b)(9)and(10)and.0905;40 CFR 403.8(f)(3),403.9(b)(3)]
14. Modification to Pretreatment Programs
Modifications to the approved pretreatment program including but not limited to local limits modifications,POTW
monitoring of their Significant Industrial Users(SIUs),and Monitoring Plan modifications,shall be considered a
permit modification and shall be governed by 40 CFR 403.18, 15 NCAC 02H.0114 and 15A NCAC 02H .0907.
Version 11/09/2011.2

NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
COUNTY OF YANCEY
IN THE MATTER OF )
NORTH CAROLINA ) SPECIAL ORDER BY CONSENT
NPDES PERMIT NC0020290 and ) EMC SOC S21-003
COLLECTION SYSTEM PERMIT WQCS00143 )
HELD BY THE TOWN OF BURNSVILLE )
Pursuant to provisions of North Carolina General Statute(G.S.)143-215.2 and G.S. 143-215.67,this
Special Order by Consent is entered into by the Town of Burnsville,hereinafter referred to as the
Town,and the North Carolina Environmental Management Commission,an agency of the State of
North Carolina created by G.S. 143B-282,and hereinafter referred to as the Commission:
1. The Town and the Commission hereby stipulate the following:
(a) The Town holds North Carolina Permit WQCS00143 for operation of an existing
wastewater collection system but is unable to consistently comply with Condition 1.2.,
regarding sanitary sewer overflows(SSOs)as set forth in Collection System Permit
WQCS00143,and Bypasses and Flow limits as set forth in NPDES Permit NC0020290.
Specifically,frequent and repetitive SSOs and flow permit limit exceedances have occurred
in the Town's Collection System and at the Wastewater Treatment Plant itself.Compliance
will require preparation of plans and specifications for collection system upgrades including,
but not limited to,sewer system rehabilitation between Town Hall and the Wastewater
Treatment Plant,and pump station upgrades at the OMC Pump Station.
(b) Noncompliance with final conditions constitutes causing and contributing to pollution of the
waters of this State,and the Town is within the jurisdiction of the Commission as set forth in
G.S.Chapter 143,Article 21.
(c) The Town has secured or will secure financing for planning,design,or construction of a new
or improved wastewater collection system which,once constructed and operated,will be
sufficient to adequately collect wastewater presently being made tributary to the collection
system,such that the Town will be able to comply with final permit conditions in Collection
System Permit WQCS00143 and NPDES Permit NC0020290.
(d) Since this Special Order is by Consent(SOC),neither party will file a petition for a
contested case or for judicial review concerning its terms.
2. The Town,desiring to comply with the Permits identified in paragraph 1. (a)above,hereby
agrees to do the following:
(a) As settlement of all alleged violations of Collection System Permit WQCS00143 and
NPDES Permit NC0020290 currently outstanding that total$55,805,prior to entering into
this Special Order by Consent,the Town of Burnsville agrees to pay the sum of$5,580 and
provide documentation that the sum of the penalties reduced by($50,225)has been spent
or currently encumbered specifically for sewer infrastructure projects.There may be other
flow violations that have not been assessed but should be coded as "No Action, SOC
Pending"in BIMS. A certified check must be made payable to the Department of
Environmental Quality(DEQ)and forwarded to the Director of the Division of Water
Resources at 1617 Mail Service Center,Raleigh,NC 27699-1617 by no later than fifteen
days following the date on which this Order is approved and executed by the Commission
and received by the Town of Burnsville.

Town of Burnsville—Burnsville Collection System and WWTP
EMC SOC S21-003
p.2
(b) Provide the Division of Water Resources(Division)staff of the NC DEO Asheville
Regional Office(ARO),located at 2090 U.S. 70 Highway,Swannanoa,NC 28778-8211,
with a list of all additions of flow(see paragraph 6)under the Town's SOC,and update
this list each time flow is added to the collection system.
(c) Undertake or continue to perform following activities in accordance with the indicated
tune schedule:
I. Operation and Maintenance recommendations:
a. Continue to respond to all SSOs and Bypasses as per conditions found in
Collections System Permit WQCS00143 and NPDES Permit NC0020290.
11. Schedules(engineering,construction&compliance):
a. Project 1 -Burnsville WWTP Improvements:
i. Rehabilitation of 0.3 MGD treatment train at the Burnsville WWTP-repair of
tank,replacement of all mechanical components,replacement of diffusers;new
steel walkways.
ii. Operate in compliance with NPDES Permit NC0020290 for a period of 6
months after completing rehabilitation.
iii. Funding Source-Rates, $520,000.00
iv. COMPLETED November 2020, Compliant Operation Milestone: April 30,2021
b. Project 2-Meadow Road Sewer Rehabilitation:
l&I Reduction: Replacement of 4,000 linear feet of existing four(4) inch and six
(6)inch sewer line with 8-inch ductile iron sewer line,20 manholes and 40
service taps on Indian Trail and Meadow Road,Burnsville NC
ii. Demonstrate significant reduction in I&I in the collection system consistent with
this project for a period of 6 months after completion.
ii.i. Funding Source-CDBG-I$1.1 million
iv. COMPLETED: October 2020,Operation Milestone: March 31,2021
c. Project 3a--OMC Pump Station Rehabilitation
i. Replacement of 1000 linear feet of 8-inch C-900 PVC Force Main to OMC
Pump Station and Rehabilitation of the OMC Pump Station to include new
pumps and generator.
ii. Operate in compliance with Collections System Petnut WQCS00143 for a
period of 6 months after completing rehabilitation.
iii. Funding Source-North Carolina State Revolving Fund(SRF)Loan$1.14
million
iv. COMPLETED November 2020(FORCE MAIN PROJECT),Compliant
Operation Milestone:April 30,2021
d. Project 3b—OMC Pump Station Flow Reduction
i. Addition of Splitter Box at OMC Pump Station and Connection to East Yancey
Sewer Treatment Plant Collection System
ii. Funding Source—Included with SRF loan of$1.14 million
iii. Construction currently being initiated,expected completion date March,2022
e. Project 4—Baker's Creek Pump Station Rehabilitation

Town of Burnsville—Burnsville Collection System and WWTP
EMC SOC S21-003
P.3
i. Rehabilitation of Baker's Creek Pump Station to include new pumps. Generator
will be replaced/upgraded if necessary.
ii. Operate in compliance with Collection System Permit WQCS00143 for a period
of 6 months after completing rehabilitation.
iii. Funding Source-ARPA funds,or loans/grants from State of North Carolina
Division of Water Infrastructure.
iv. Project to be completed by December 31,2024.
f. Project 5: West Main Sewer Interceptor Improvements
i. I&I Reduction Sewer System Rehabilitation between Town Hall and the
Wastewater Treatment Plant West Main Sewer Interceptor Project
ii. Funding Source-CDBG-I project
• Projected Schedule
Funding Approval: April,2021
Submit Engineering Report: October,2021
Engineering Report Approval: March,2022
Bid and Design Package Submittal: August,2022
Bid and Design Package Approval: December,2022
Complete Construction: May,2024
g. Project 6:GIS Stormwater mapping project
i. I&I Reduction efforts aimed to locate all stormwater infrastructure. It is
expected that this effort will identify and any possible cross-connections into the
sanitary sewer system and/or identify areas of the storm sewer system that
impact the sanitary sewer system.
ii. Funding Source-Town rates&205(j)Water Quality Management Planning
Grant
iii. COMPLETED:November 2021,Operation Milestone:April 29,2022
h. Project 7: Burnsville WWTP Rehabilitation Funding and Design
i. Overhaul and rehabilitation of the 0.5 MGD Burnsville Waste Water Treatment
Plant. Work shall include replacing air diffusers,rehabilitation of the plant
headworks,replacing the disinfection treatment from gaseous chlorine to liquid
chlorine,repatr/replacement of the blower system, and construction of a new lab
building.
• Projected Schedule
Secure Funding Source—May 2024
Initiate Engineering Services Contact—July 2024

Town of Burnsville—Burnsville Collection System and WWTP
EMC SOC S21-003
p.4
If insufficient bidders prevent the Town from lawfully awarding a contract or legal action by
8
prospective bidders prevents the Town from lawfully awarding contracts within the time frame
stated in paragraph 2 (c)(II)above,the Town shall notify the ARO and this Order shall be
amended to accommodate any such delays that are beyond the control of the Town.
(d) The Town shall comply with all terms and conditions of Collection System Permit
WQCS00143 and NPDES Permit NC0020290. The Permittee may also be required to
monitor for other parameters as deemed necessary by the Director in future permits or
administrative letters.
(e) No later than thirty(30)calendar days after any date identified for accomplishment of any
activity listed in 2(c)above,the Town shall submit to the ARO a written notice of
compliance or noncompliance therewith. In the case of noncompliance,the notice shall
include a statement of the reasons(s)for noncompliance,remedial actions(s)taken,and a
statement identifying the extent to which subsequent dates or times for accomplishment of
listed activities may be affected.
(f) No later than fifteen(15)calendar days after the end of the calendar quarter stipulated in
the schedule below,quarterly reports will be due to the ARO Regional Supervisor.
Quarterly Report Report Due Date
• January—March April 15
April—June _ July 15
July—September October 15
October-December January 15
3. The Town agrees that unless excused under paragraph 4,the Town will pay the Director of
DWR,by check payable to the NC DEQ,stipulated penalties according to the following
schedule for failure to meet the deadlines set out in paragraphs 2(c)and 2(f).
Violation Description Stipulated Penalty
Failure to meet any milestone date identified in $250/day
ara _Rh 2(c)above.
Failure to submit any report required by $250/day
aragraph 2(f)above.
An ortable spill(SSO or Bypass) $250/event
4. The Town and the Commission agree stipulated penalties are not due if the Town satisfies the
Division of Water Resources that noncompliance was caused by extraordinary circumstances:
(a) An act of God;
(b) An act of war,
(c) An intentional act or omission of a third party,but this defense shall not be available if the
act or omission is that of an employee or agent of the defendant or if the act or omission
occurs in connection with a contractual relationship with the Town;
(d) An extraordinary event beyond the Town's control. Contractor delays or failure to obtain
funding will not be considered as events beyond the Town's control;or
(e) Any combination of the above causes.

Town of Burnsville—Burnsville Collection System and WWTP
EMC SOC S21-003
p.5
Failure within thirty(30)days of receipt of written demand to pay the penalties or challenge
them by a contested case petition pursuant to G.S. 150B-23,will be grounds for a collections
action, which the Attorney General is hereby authorized to initiate. The only issue in such an
action will be whether the thirty(30)days has elapsed.
5. In recognition of the rehabilitation work already completed, the Division is provisionally
waiving the existing sewer tap moratorium. So long as continued progress is made regarding
reduction of I&I,the tap moratorium will remain waived. The Division reserves the right to
reinstate the moratorium if conditions at the facility deteriorate.
6. The nature of the additional flows is such that the waste characteristics do not exceed those
generally associated with domestic waste or are pretreated to domestic strengths. Waste of
greater than normal domestic strength may be accepted if the parameter(s)that exceed normal
domestic strength wastewater are not those for which interim limitations have been developed
and it can be demonstrated to the satisfaction of the Director the additional waste will not
adversely affect the treatment efficiency of the treatment system for any modified parameter or
result in the violation of any other permit limitation. All new and proposed industrial waste
tributary to the system must be controlled using all needed mechanisms including but not limited
to adoption and implementation of industrial waste control and pretreatment ordinances.No
wastewater can be accepted which will add toxic pollutants in quantities not generally associated
with domestic wastewater characteristics,unless the acceptance of the additional wastewater can
be supported through appropriate analyses acceptable to the Director.
7. This SOC and any terms and conditions contained herein,hereby supersede any and all previous
Special Orders,Enforcement Compliance Schedule Letters, terms and conditions contained
therein issued in connection with Collection System Permit WQCS00143 and NPDES Permit
NC0020290. In the event of a Permit modification or renewal,requirements contained therein
shall supersede those contained in this SOC, except as modified and contained herein.
8. Any violation of the terms of this SOC,including paragraphs 2(c)and 2(e)above may, upon
the discretion of the Director, terminate paragraph five(5)of this Order.
9. Noncompliance with the terms of this SOC are subject to enforcement action in addition to the
above stipulations, including injunctive relief pursuant to G.S. 143-215.6(C).
10. The Town,upon signature of this SOC,will be expected to comply with all schedule dates,
terms, and conditions of this document.
11. This SOC shall expire 90 days after completion of the work listed above.

Town of Burnsville-BurnavilIe Collection System and WWTP
EMC SOC S21-003
p.6
For the Town of Burnsville:
1-I ettf I4 lac , M n r
Print Name and Title of gning Official
✓ la - (e — ava.)
ignature of Signing Official Date
For the North Carolina vironm tal Management Commission:
/ l
S.Daniel Smith,P.G. Date z�
Director,Division ofWater Resources

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
% . WithersRavenel
IIIOur People. Your Success.
Floatation Calculations
Yancey County & Town of Burnsville
Pine Swamp WWTP Rehabilitation
Burnsville, NC
June 5, 2024
Town of Burnsville
Town of Burnsville WWTP
2 Town Square,PO Box 2
ATTN:Burnsville,NC 28714
ATTN:Heather Hockaday
Prepared By:
WithersRavenel
84 Coxe Avenuse,Suite 260
Burnsville,NC
Phone: [phone] \DpCAgA4s,L„,,,
License#: F-1479 S S/ °°
AtiDA C8D 7:9na4IE
DWI Project No. SRP-W-ARP-0173 & WR Project No. 08221172.00 28945
`°6/ 4/20244z.
O °°° tiGINs °'°
Dana Bolden, PE ��4°° J. B°0��

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP Peak Flows
Flows(January 2022-December 2023)
Parameter (MGD)
Design Capacity(MGD) 0.8
Average Day 0.48
Max Month Average Day 0.69
Permitted 30-Day Avg 0.80
Max Day 1.37
Assumptions for Peaking Factor(PF)
Hourly Peaking Factor 2.5 (Minimum Design Criteria for Peaking Factor)
Max Month Average Day 0.69
Calculated Current Peak Hourly 1.72
Flowrate(MGD)
Design Average Flowrate (MGD) 0.80
Design Peak Hourly Flowrate(MGD) 2
Monthly Monthly Max
Month/Year Average Flow (MGD)
Dec-23 0.401 0.853
Nov-23 0.351 0.522
Oct-23 0.343 0.471
Sep-23 0.413 0.599
Aug-23 0.480 0.812
Jul-23 0.438 0.550
Jun-23 0.475 0.831
May-23 0.469 0.850
Apr-23 0.521 0.849
Mar-23 0.537 0.899
Feb-23 0.608 1.066
Jan-23 0.615 0.982
Dec-22 0.456 0.774
Nov-22 0.441 1.280
Oct-22 0.377 0.676
Sep-22 0.429 0.807
Aug-22 0.437 0.790
Jul-22 0.496 0.828
Jun-22 0.457 0.643
May-22 0.555 1.051
Apr-22 0.549 0.750
Mar-22 0.610 0.813
Feb-22 0.689 1.366
Jan-22 0.420 0.664

DocuSign Envelope ID C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Mechanical Screen and Grit Removal System Calculation
Project:Burnsville WWTP Rehab
Project#:08221172
WWTP Design Calculations
Automatic Screens
Mechanical Screen TOW 2574.403
Module MFR Manufacturer Head Loss Info
Reference Q 4 '' *mgd Q(mgd)= 0:8 1.8 :, a3
y k
Reference HL= ft HL(ft)= 0.09 0.36 0.56
EGL ',A*„; 2570.41 2571.04 2571.48
At a peak flow of 2.0 MGD and an HGL of 2571.48',the proposed step screens will have 2.5 ft of freeboard.
Please see attached specification for the proposed screens.
Grit System
Grit System TOW 2572.424
Module MFR Manufacturer Head Loss Info
Reference Q= 7 mgd Q(mgd)=
Reference HL= . ft HL(ft)= 0 03 0 10 0.16
EGL a}!GL 2570.32 2570.68 2570.91
The proposed grit system can handle up to 3.8 MGD which is larger than the peak flow of 2.0 MGD.
MGD. The capacity of the system was provided by a manufacturer. Please see attached
specification for the proposed grit system.

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
Existing Manhole Invert El 2552.90 2552.90 2552.90
Piping from CCC to Existing Manhole
Module PIPI Piping by Hazen-Williams Equation
Diameter= - 40 in Q(mgd) ,"*
Length= 104.5 ft V(fps)= 1.42 3.55 4.26
izen&Will.C= 120 Hv(ft)= 0.03 0.20 0.28
Minor Loss K's: Pipe Exit 1 Hf(ft)= 0.11 0.58 0.81
Pipe Entranc 1 Hm(ft)= 0.06 0.35 0.50
HL(ft)= 0.16 0.93 1.31
Sum K= 2
EGL•HGL 2553.06 2553.83 2554.21
CCC Effluent Chamber 2568.95
Module OCR Short Rectangular Open Channel 2566.95
Invert El= 2558.95 Q(mgd)= 0.5 1.25 1.5 2558.95
Width= 2.00 ft Backwater(ft)= -5.89 -5.12 -4 74
Length= 2.50 ft Yc(ft)= 0 17 0.31 0 35
Manning n= 0.015 Yn(ft)= 1 17 1.50 1.54
Slope= 0.0000 ft/ft Iterate 0>>> N/A N/A N/A
K-ent= 0.50 Area(sf)= 2.35 2.99 3.08
Downstream Conditions Actual Depth(ft)= 0.17 0.31 0.35
Area(sf)= 0.33 0.62 0.69
V(fps)= 2.31 3.14 3.34
Sf(ft/ft)= 0.0073 0.0069 0.0069
Upstream Conditions Upstrm Depth(ft)= ,__ , , ..,� _ „r7i,r7snrkl
Iterate 0>>> 0.000 0.000 0.000
Check>>>.upercritic. upercritica ok
Area(sf)= 0.23 0.49 0.82
V(fps)= 3.33 3.95 2.83
Sf(ft/ft)= 0.0230 0.0139 0.0042
Hm(ft)= 0.09 0.12 0.06
EGL*'HGL 2559.32 2559.56 2559.55

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
Notes Control Point
Weir FFE to Crest 8.00
Module WV V-Notch Weir Crest to HWL 8.98
NWL HWL HWL above c 11.769248
Weir El= 2566.95 ft Q(mgd)= . $- n:r %of V-Notch 74%
#Notches= 1 Q/Notch(mgd)= 0.5 1.25 1.5
depth of Notch= 16 in Hw(ft)= 0.63 0.90 0.97
VVeir Submergence(ft)= 0.00 0.00 0.00 HWL @ 1.5 fv 8.97
Weir Submerged? No No No Freeboard 1.03
Notch Overtopped? No No No
EGL-'HGL 2567.58 2567.85 2567.92
Notes
CCC Effluent Chamber T.O.W 2568.95
Module OCR Short Rectangular Open Channel Weir El 2566.95
NWL HWL F.F.E 2558.95
Invert El= 2558.95 Q(mgd)= 0.5 1.25 1.5
Width= 3.00 ft Backwater(ft)= 8 63 8 90 8 97
Length= 6.50 ft Yc(ft)= 0 13 0 23 0 27
Manning n= 0.015 Yn(ft)= 1.17 1.50 1.54
Slope= 0.0000 ft/ft Iterate 0>>> N/A N/A N/A
K-ent= 0.50 Area(sf)= 3.52 4.49 4.62
Downstream Conditions Actual Depth(ft)= 8.63 8.90 8.97
Area(sf)= 25.88 26.71 26.91
V(fps)= 0.03 0.07 0.09
Sf(ft/ft)= 0.0000 0.0000 0.0000
Upstream Conditions Upstrm Depth(ft)= 8.63 8.90 8.97
Iterate 0>>> 0 000 -0 001 0 000
Check>>> ok
Area(sf)= 25.88 26.71 26 91
V(fps)= 0.03 0.07 0.09
Sf(ft/ft)= 0.0000 0.0000 0.0000
Hm(ft)= 0.00 0.00 0.00
EGL*/HGL 2567.58 2567.85 2567.92

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
Notes
Weir Gates Weir Gates T.O.W 2568.95
Module PORT Rectangular Port(Submerged or Free Surface) Module POR I Rectangular Port(Submerged or Free Surface) Weir El 2566.95
NWL HWL NWL HWL F.F.E 2558.95
Invert El= 2564.05 ft Q(mgd)= 0.25 0.625 0.75 Invert El= ft Q(mgd)= 0.25 0025 0.75
Height= 2 ft Backwater(ft)= 2.63 2.90 2.97 Height= ft 3ackwater(ft)= 2.63 2.90 2.97
Width= 1 ft Submerged Submerged Submerged Width= ft Submerge(SubmergecSubmerged
Length= 12 in Yc(ft)= 0.17 0.31 0.35 Length= in Yc(ft)= 0.17 0.31 0.35
Act.Depth(ft)= 2.63 2.90 2.97 Act.Depth(ft)= 2.63 2.90 2.97
Wetted P(ft)= 6.00 6.00 6.00 Wetted P(ft)= 6.00 6.00 6.00
L/P= 0 17 0 17 0 17 L/P= 0.17 0.17 0.17
No.Suppressed Contr(0-3)= 3 3 3 No.Suppressed Contr(0-3)_ Z .,' $
Cd= 0 72 0.72 0 72 Cd= 0.72 0.72 0.72
Area(sf)= 2.00 2.00 2.00 Area(sf)= 2.00 2.00 2.00
V(fps)= 0.19 0.48 0.58 V(fps)= 0.19 0.48 0.58
HL(ft)= 0.00 0.01 0.01 HL(ft)= 0.00 0.01 0.01
EGL it HGL 2567.58 2567.86 2567.93 EGL is HGL 2567.58 2567.86 2567.93

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
Notes
Description Description T.O.W 2568.95
Module OCR!Rectangular Open Channel Profile Module OCR!Rectangular Open Channel Profile Weir El 2566.95
F.F.E 2558.95
Invert El= 2558.95 Q(mgd)= 0.25 0.625 0.75 Invert El= 2558.95 Q(mgd)=
Width= 2.00 ft Backwater(ft)= 8 63 8 91 8.98 Width= 2.00 ft 3ackwater(ft)= 8.63 8.91 8.98
Length= 90.00 ft Yc(ft)= 0 11 0 19 0.22 Length= 90.00 ft Yc(ft)= 0.11 0.19 0.22
Manning n= 0.015 Yn(ft)= 1.17 1.50 1.54 Manning n= 0.015 Yn(ft)= 1.17 1.50 1.54
Slope= 0.0000 ft/ft Iterate 0>>> N/A N/A N/A Slope= 0.0000 ft/ft Iterate 0>>> N/A N/A N/A
K-ent= 0.50 Area(sf)= 2.35 2.99 3.08 K-ent= 0.50 Area(sf)= 2.35 2.99 3 08
Downstream Conditions Actual Depth(ft)= 8.63 8.91 8.98 Downstream Conditions Actual Depth(ft)= 8.63 8.91 8 98
Area(sf)= 17.25 17.82 17.96 Area(sf)= 17.25 17.82 17.96
V(fps)= 0.02 0.05 0 06 V(fps)= 0.02 0.05 0.06
Sf(ft/ft)= 0.0000 0.0000 0 0000 Sf(ft/ft)= 0.0000 0.0000 0 0000
Segment Lent 9 ft 'strm Depth(ft)= 8.63 8.91 , 8.98 Segment Len! 9 ft trm Depth(ft)= 8.91 8.98
Iterate 0>>> 0.000 0.000 0.000 Iterate 0>>> 0.000 0.000 0.000
Check>>> ok ok ok Check>>> ok ok ok
Area(sf)= 17.25 17.82 17.96 Area(sf)= 17.25 17.82 17.96
V(fps)= 0.02 0.05 0.06 V(fps)= 0.02 0.05 0.06
Sf(ft/ft)= 0 0000 0.0000 0 0000 Sf(ft/ft)= 0.0000 0 0000 0.0000
Segment Lenc 18 ft ,strm Depth(ft)= 8.63 8.91 8.98 Segment Len! 18 ft trm Depth(ft)= 8.63 8.91 8.98
Iterate 0>>> 0.000 0.000 0.000 Iterate 0>>> 0.000 0.000 0.000
Check>>> ok ok ok Check>>> ok ok ok
Area(sf)= 17.25 17.82 17.96 Area(sf)= 17.25 17.82 17.96
V(fps)= 0.02 0.05 0.06 V(fps)= 0.02 0.05 0.06
Sf(ft/ft)= 0.0000 0 0000 0 0000 Sf(ft/ft)= 0.0000 0 0000 0.0000
Segment Lent 27 ft ,strm Depth(ft)= 8.63 v,-.0,91 8.98 Segment Len! 27 ft trm Depth(ft)= 8.63 8.91 8.98
Iterate 0>>> 0.000 0.000 0 000 Iterate 0>>> 0.000 0.000 0.000
Check>>> Ok ok Ok Check>>> ok Ok ok _
Area(sf)= 17.25 17.82 17 96 Area(sf)= 17.25 17.82 17.96
V(fps)= 0.02 0 05 0 06 V(fps)= 0.02 0.05 0.06
Sf(ft/ft)= 0.0000 0.0000 0 0000 Sf(ft/ft)= 0.0000 0.0000 0.0000
Segment Lenc 36 ft ,strm Depth(ft)= 8.63 8,91 8.98 Segment Len! 36 ft trm Depth(ft)_ .63 8.91 8.98
Iterate 0>>> 0.000 0.000 0.000 Iterate 0>>> 0.000 0.000 0.000
Check>>> ok ok ok Check>>> ok ok ok
Area(sf)= 17.25 17.82 17 96 Area(sf)= 17.25 17.82 17.96
V(fps)= 0.02 0.05 0.06 V(fps)= 0.02 0.05 0.06
Sf(ft/ft)= 0.0000 0.0000 0.0000 Sf(ft/ft)= 0.0000 0.0000 0.0000
Hm(ft)= 0.00 0.00 0.00 Hm(ft)= 0.00 0.00 0.00
NWL HWL NWL HWL
EGL•HGL 2567.58 2567.86 2567.93 EGL=HGL 2567.58 2567.86 2567.93

DocuSign Envelope ID.C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
Notes
Description Description T.O.W 2568.95
Module OCR Short Rectangular Open Channel Module OCR Short Rectangular Open Channel Weir El 2566.95
F.F E 2558.95
Invert El= 2558.95 Q(mgd)= 0.25 0.625 075 TM Invert El= 2558.95 Q(mgd)= „ 025 0.825 0.75
Width= 2 50 ft Backwater(ft)= 8.63 8 91 8.98 Width= 2.50 ft 3ackwater(ft)= 8.63 8.91 8.98
Length= 15.00 ft Yc(ft)= 0.09 0 17 0.19 Length= 15.00 ft Yc(ft)= 0 09 0 17 0 19
Manning n= 0.015 Yn(ft)= 1.17 1.50 1.54 Manning n= 0.015 Yn(ft)= 1.17 1.50 1.54
Slope= 0.0000 ft/ft Iterate 0>>> N/A N/A N/A Slope= 0.0000 ft/ft Iterate 0>>> N/A N/A N/A
K-ent= 0.50 Area(sf)= 2.94 3.74 3.85 K-ent= 0.50 Area(sf)= 2.94 3.74 3.85
Downstream Conditions Actual Depth(ft)= 8.63 8.91 8.98 Downstream Conditions Actual Depth(ft)= 8.63 8.91 8.98
Area(sf)= 21.57 22.27 22.45 Area(sf)= 21.57 22.27 22.45
V(fps)= 0.02 0.04 0.05 V(fps)= 0.02 0.04 0.05
Sf(ft/ft)= 0.0000 0.0000 0.0000 Sf(ft/ft)= 0.0000 0.0000 0.0000
Upstream Conditions Upstrm Depth(ft)= '':-8.63 .' '`t91'.,,i_' t a7C Upstream Conditions Upstrm Depth(ft)= 8.63 8.91 8.98
Iterate 0>>> 0.000 0.000 0.000 Iterate 0>>> 0.000 0 000 0.000
Check>>> ok ok ok Check>>> ok ok ok
Area(sf)= 21.57 22.27 22.45 Area(sf)= 21.57 22.27 22.45
V(fps)= 0.02 0.04 0.05 V(fps)= 0.02 0.04 0.05
St(ft/ft)= 0.0000 0.0000 0.0000 Sf(ft/ft)= 0.0000 0.0000 0.0000
Hm(ft)= 0.00 0.00 0.00 Hm(ft)= 0.00 0.00 0.00
EGL'*11GL 2567.58 2567.86 2567.93 EGL:',A L 2567.58 2567.86 2567.93
Notes
Weir Gates Weir Gates T.O W 2568.95
Module PORT Rectangular Port(Submerged or Free Surface) Module POR i Rectangular Port(Submerged or Free Surface) Weir El 2566.95
F.F.E 2558.95
Invert El= 2584.,95 ft Q(mgd)= 0.25 0.825 0,75 Invert El 0fl0 ft Q(mgd)= 025 0.825 0.75
Height= 2 ft Backwater(ft)= 2.63 2.91 2.98 Height= ,„ c ft 3ackwater(ft)= 2.63 2.91 2.98
Width= y ft Submerged Submerged Submerged Width `}g g g ft SubmergecSubmergecSubmerged
Length= ., `-,12 in Yc(ft)= 0.17 0.31 0.35 Length= ' '- in Yc(ft)= 0.17 0.31 0.35
Act.Depth(ft)= 2.63 2.91 2.98 Act.Depth(ft)= 2.63 2.91 2.98
Wetted P(ft)= 6.00 6.00 6.00 Wetted P(ft)= 6.00 6.00 6.00
L/P= 0.17 0.17 0.17 L/P= 0.17 0.17 0.17
No.Suppressed Contr(0-3) ,,, . .4 ` ,s No.Suppressed Contr(0-3)= ,t4. .,,Z a'.
Cd= 0.72 0.72 0.72 Cd= 0.72 0.72 0.72
Area(sf)= 2.00 2.00 2.00 Area(sf)= 2.00 2.00 2.00
V(fps)= 0.19 0.48 0.58 V(fps)= 0.19 0.48 0.58
HL(ft)= 0.00 0.01 0.01 HL(ft)= 0.00 0.01 0.01
EGL w HGL 2567.58 2567.87 2567.94 EGL. GL 2567.58 2567.87 2567.94

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
CCC Influent Chamber 2568.95
Module OCR Short Rectangular Open Channel 2566.95
2558.950
Invert El= 2558.95 Q(mgd)=
Width= 2.00 ft Backwater(ft)= 8.63 8.92 8.99
Length= 2.50 ft Yc(ft)= 0.17 0.31 0.35
Manning n= 0.015 Yn(ft)=
Slope= 0.0000 ft/ft Iterate 0>>> N/A N/A N/A
K-ent= 0.50 Area(sf)= 2.35 2.99 3.08
Downstream Conditions Actual Depth(ft)= 8.63 8.92 8.99
Area(sf)= 17.26 17.83 17.98
V(fps)= 0.04 0.11 0.13
Sf(ft/ft)= 0.0000 0.0000 0.0000
Upstream Conditions Upstrm Depth(ft)= 8.63 8.92 8.99
Iterate 0>>> 0.000 0.000 0.000
Check>>> ok ok ok
Area(sf)= 17.26 17.83 17.98
V(fps)= 0.04 0.11 0.13
Sf(ft/ft)= 0.0000 0.0000 0.0000
Hm(ft)= 0.00 0.00 0.00
NWL HWL
EGL EWGL 2567.58 2567.87 2567.94
Piping from FETP to CCC
Module PIP1 Piping by Hazen-Williams Equation
Diameter= 12 in Q(mgd)= 0.5 1.25 1.5
Length= 20 ft V(fps)= 0.99 2.46 2.96
iazen&Will.C= 120 Hv(ft)= 0.02 0.09 0 14
Minor Loss K's Pipe Exit 1 Hf(ft)= 0.01 0.05 0.06
Pipe Entrant 1 Hm(ft)= 0.04 0.24 0.35
90°Bend 0 HL(ft)= 0.05 0.29 0.41
90°Bend 0
Sum K= 3
EGL =HGL 2567.62 2568.15 2568.35

DocuSign Envelope ID.C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
Extended Aeration Treatment Plant 2570.450 TOW 2570.45
Module MFR Manufacturer Hei Q(mgd)= `b 2569.22 ## Inlet Invert 2569.221
Effluent El 2568.992 2569.013 2569.033 2568.992 Control Weir Effluent Weir 2569.013
Influent Invert 2569.22 2569.22 2569.22 2569.013
2553.950 Existing Tank Bo FFE 2553.950
NWL HWL
EGL•HGL 2568.99 2569.01 2569.03
Splitter Box to Extended Aeration Treatment Plant
FFE 2553.94917
Difference 0 66
New Invert ou 2569.22
Length(ft) 132
Slope 0.005
Existing Inverl 2569.88
Splitter Box
Module MFR Manufacturer Head Loss Info
Reference Q= 2 mg( Q(mgd)= 0.8 1.6 2
Reference HL= 4,73 ft WL(ft)= 4.47 4.64 4.73
FFE= 2565.78
NWL HWL
EGL•HGL 2570.25 2570.42 2570.51
Piping from Grit System to Splitter Box
Module PIP1 Piping by Hazen-Williams Equation
Diameter= 16 in Q(mgd)= 0.8 1.8 2
Length= 37.5 ft V(fps)= 0.89 1.77 2.22
izen&Will.C= 120 Hv(ft)= 0.01 0.05 0.08
Minor Loss K's Pipe Exit 1 Hf(ft)= 0.01 0.03 0.05
Pipe Entranc 1 Hm(ft)= 0.03 0.13 0.20
90°Bend 0 HL(ft)= 0.04 0.16 0.25
90°Bend 0
Sum K 3
EGL =HGL 2570.29 2570.58 2570.76

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
BURNSVILLE WWTP HYDRAULIC PROFILE
Grit System TOW 2572.424
Module MFR Manufacturer Head Loss Info
NWL
Reference Q= 2.9i~mgc Q(mgd)= 0.8 1.8 2
Reference HL= 0.n.ft HL(ft)= 0.03 0.10 0.16
EGL■HGL 2570.32 2570.68 2570.91 Per Manufacturer,HWL=2571.215
Mechanical Screen TOW 2574 403
Module MFR Manufacturer Head Loss Info
NWL
Reference Q= 3,8 mgc Q(mgd)= 0.8 1.8 2
Reference HL= 2.03916828 ft HL(ft)= 0.09 0.36 0.56
EGL HGL 2570.41 2571.04 2571.48 Per manufacturer,HWL=2572.948

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP Influent Design Concentrations
Influent/Effluent Dosing Concentration
Flows(January 2022-December 2023)
Parameter (MGD)
Average Day 0.4819
Max Month Average Day 0.6886
Permitted 30-Day Avg 0.80
Max Day 1.37
Loadings(July 2021-February 2023)
Average Day Max Month Average Max Month Loading at
Parameter (mg/L) Day(mg/L) Average Flow(lbs/day)
BOD5 181 280 1124
TSS 197 271 1088
BOD5
Summer 2023 241.16 mg/L
Summer 2022 173.67 mg/L
Winter 2023 166.81 mg/L
Winter 2022 143.17 mg/L
Influent NH3-N
Design Concentration 45 mg/L
Design Flow 0.8 MGD
Design Load 300 lbs/day

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP Influent Design Concentrations
Monthly Average Flow Monthly Max
Influent Conditions (MGD) (MGD)
Average Max Day Average Max Day 0.4014 0.853
BOD5 BOD5 TSS TSS 0.3511 0.522
Dec-23 190.463636 330 183.454545 302 0.3435 0.471
Nov-23 216.953846 313.4 246.307692 500 0.4126 0.599
Oct-23 212.271429 363.3 153.428571 234 0.4801 0.812
Sep-23 259.591667 450 249.833333 398 0.4378 0.55
Aug-23 279.657143 390 163.714286 286 0.4750 0.831
Jul-23 253.869231 530 199.076923 310 0.4685 0.85
0.5213 0.849
Jun-23 163.907692 248.4 164.615385 224
May-23 277.635714 670 259.142857 934 0.5366 0.899
Apr-23 146 195 129.666667 246 0.6078 1.066
Mar-23 164.453846 433 270.615385 444 0.6148 0.982
Feb-23 178 430 233 896 0.4559 0.774
Jan-23 105 208.4 239 1076 0.441133 1.28
Dec-22 167 370 182 287 0.377 0.676
Nov-22 168 320 212 540 0.429333 0.807
Oct-22 182 300 222 332 0.4371 0.79
Sep-22 148 265 202 342 0.4961 0.828
Aug-22 237 340 236 310 0.4574 0.643
Jul-22 169 330 199 370 0.5551 1.051
Jun-22 143 216.7 198 440 0.5487 0.75
May-22 163 350 171 478 0.6101 0.813
Apr-22 93 203.3 156 246 0.6886 1.366
Mar-22 83 173.4 144 402 0.4198 0.664
Feb-22 161 281.7 155 324
Jan-22 187 490 152 272
BOD5 TSS Flow
AVERAGE MAX AVERAGE MAX Average
2023 203.9836837 670 207.65 1076 0.4709 1.366
2022 158.4166667 490 185.75 540 0.493022167

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Extended Aeration Treatment System Calculation
Extended Aeration Basin Air
Calculations
Design Flow 0.5 MGD
Influent BOD 280 mg/L
Influent NH3-N 45 mg/L Permitted Effluent Values
Effluent BOD 20 mg/L 30 mg/L
Effluent NH3-N 4 mg/L 13 mg/L
BOD5 Destroyed 1084 lb/day
Ammonia-Nitorgen Destroyed 171 lb/day
NO3 Denitrified 0 lb/day
Rate Coefficients Oxygen Rates
lb Oxygen/lb BOD5 Applied 1.25 AOTR(lb/day) 2142 *From M&E 4th Edition,Table 3-15
lb Oxygen/lb NH3-N Applied 4.6
lb Oxygen/lb NO3x Denitrified 0
Transfer Alpha Value 0.6
Transfer Beta Value 0.98
Operating Dissolved Oxygen(mg/L) 2.00
Oxygen Requirements from Sanitaire Diffused Aeration Design Guide
Diffuser Coarse AOR/SOR 0.5 for coarse
OTE 0.75 %/ft AOR 2141.71 lb/day
Submergence 14 SOR 4283.424 lbs/day
OTE 0.105 SOR 2.9746lbs/min
SCFM= 0.0173 lbs 02/SCFM
OTE*SCFM 0.0018165 lbs 02/min
SOR Demand 2.9746 lbs/min
SCFM Required 1637.54473 per aeration basin
20%Safety Factor 1965.05 SCFM
The oxygen required to reduce BOD and NH3-N to below permitted effluent values with a 20%safety factor is 1965 SCFM.The
blowers specified this project are sized to deliver 2176 SCFM each.

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Secondary Clarifier
Project:Yancey County Pine Swamp WWTP Rehab
Project#:08221172
WWTP Design Calculations
Average Daily Flow 0.5 MGD
Peak Hourly Flow 1.25 MGD
Clarifier Diameter 42 ft
Maximum Water Level 15 ft M&E 4th Edition,Table 8-7 recommends between 11.5 ft and 19 ft
Clarifier Surface Area 1385 sqft
Design MLSS 3500 mg/L
Surface Overflow Rate
Average 361 M&E 4th Edition,Table 8-7 indicates recommends between 400 and 700
Peak 903 M&E 4th Edition,Table 8-7 indicates recommends between 1000 and 1600
Solids Loading Rate
Average 0.88 M&E 4th Edition,Table 8-7 indicates recommends between 0.8 and 1.2
Peak 1.54 M&E 4th Edition,Table 8-7 indicates recommends less than 1.6

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP Rehabilitation Chlorine Contact Basin Calculations
Flow and CCT Calcs Splitter Box
ADF(MGD) 0.5 Sidewater Depth(ft) 8
PDF(MGD) N/A Splitter Box Width(ft) 2.5
PHF(MGD) 1.25 Splitter Box Length(ft) 2.5
PHF ADF Dimensions
CCT(min) 15 30 Outer and Central Wall Thickness(ft) 1
Required Vol(gal) 13,020 10,416 Baffle Wall Thickness(ft) 0.50
Required Vol(cuft) 1,741 1,393 CCC Width(ft) 22
CCC Length(ft) 17
#of Runs/Train 6
Chlorine Contact Time/Train
First Channel Length(ft) 7.25
Other Channel Length(ft) 8.5
First Channel Width(ft) 2.5
Other Channel Width(ft) 2
Baffle Opening Width(ft) 2
Single Train Volume(cuft) 865
Total CCC Volume(cuft) 1,730
Pipe Volume(cuft) 41
Total Chlorine Contact Volume(cuft) 1,771 Volume OK
Volume Required(cuft) 1,741

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP Rehabilitation Chemical Pump Sizing
Chlorination Pump Sizing
Contact Stabilization Dosing Location
Flow Chlorine Demand
Average Day 0.3 MGD Type of Treatment Activated Sludge
Peak Hour 0.75 MGD Dosage Target 8 mg/L
Average Day 788 1pm Chlorine Demand at Average Flow 6308 mg/min
Peak Day 1971 1pm Chlorine Demand at Peak Flow 15770 mg/min
NaOCL Concentration 12.5% %
NaOCL S.G. 1.25
Bulk Solution 156.25 mg/mL
Required Flow Rate at Average Flow 40 mL/min 0.011 gpm 0.64 gph 15.4 gpd
Required Flow Rate at Peak Flow 101 mL/min 0.027 gpm 1.60 gph 38.4 gpd
PumpSizing
g
Pump Flow at 100% 500 mUmin
Pump Speed at Peak Flow Demand 20%
Pump Speed at Average Flow Demand 8%
Tank Sizing
Storage Capacity 30 days
Storage Capacity 461 gal
Volume Provided
1320 gal

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville VWVTP Rehabilitation Chemical Pump Sizing
Chlorination Pump Sizing
Extended Aeration Treatment Plant Dosing Location
Flow Chlorine Demand
Average Day 0.5 MGD Type of Treatment Activated Sludge
Peak Hour 1.25 MGD Dosage Target 8 mg/L
Average Day 1314 1pm Chlorine Demand at Average Flow 10513 mg/min
Peak Hour 3285 1pm Chlorine Demand at Peak Flow 26283 mg/min
NaOCL Concentration 12.5%
NaOCL S.G. 1.25
Bulk Solution 156.25 mg/mL
Required Flow Rate at Average Flow 67 mL/min 0.018 gpm 1.07 gph 25.598 gpd
Required Flow Rate at Peak Flow 168 mL/min 0.044 gpm 2.67 gph 63.996 gpd
Pump Sizing
Pump Flow at 100% 500 mL/min
Pump Speed at Peak Flow Demand 34%
Pump Speed at Average Flow Demand 13%
Storage Capacity
Storage Capacity 30 days
Storage Capacity 768 gal
Volume Provided
1320 gal

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP Rehabilitation Chemical Pump Sizing
De-Chlorination Pump Sizing
Flow Sulfite Demand
Average Day 0.8 MGD Residual Chlorine 2 mg/L
Peak Hour 2 MGD Residual Chlorine at Average Flow 4205 mg/min
Average Day 2103 1pm Residual Chlorine at Peak Flow 10513 mg/min
Peak Hour 5257 1pm Dechlorination Chemical Sodium bisulfite
Neutralization Ratio 1.606
Sodium bisulfite concentration required 3.21 mg/L
Sodium bisulfite%active 40%
Sodium bisulfite S.G. 1.33
Bulk Solution 532 mg/mL
Required Flow Rate at Average Flow 7.90 mL/min 0.002 gpm 0.13 gph 3.0073 gpd
Required Flow Rate at Peak Flow 19.76 mL/min 0.005 gpm 0.31 gph 7.5183 gpd
Storage
Storage Capacity 30 days
Storage Capacity 90 gal
Volume Provided
110 gal
L

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP-Repurposed 0.5 MGD Tank Calculations
Existing 0.5 MGD Train Compartment Volume
Compartments Volume Unit
Contact 62,006 gallons
Reaeration 126,632 gallons
Digester 113,532 gallons
Chlorine Cotact Tank(CCT) 10,416 gallons
Clarifier 90,000 gallons
TOTAL 402,586 gallons
Repurposed 0.5 MGD Train Volume Existing Zones in 0.5 MGD Train
Volume Allocated for Aerobic Digester: 185,954.Contact,Digester,Chlorine Contact Tank
Volume Allocated for Flow Equalization Basin: 216,632 Reaeration and Clarifier

DocuSgn Envelope ID C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C Burnsville WWTP-Equalization Basin Calculations
ElalizationVolumeCalc tion_s
Graphical Method Using typical method and scaling flowrate using the ratio PHF(Peak Hourly Flow)from the graph and WWTP
Time(hours) Flowrate(m3/s) Scaled Flowrate Q(m3/s) Cumulative flow in m3) Volume OUT avg cumulative difference Time Period
0 0.132 0.035 0.00 133.50 133.50 -133.50
1 0.114 0.031 237.43 133.50 267.01 -29.57 M-1
2 0.092 0.025 326.35 133.50 400.51 -74.16 1 to 2
3 0.072 0.019 396.03 133.50 534.02 -137.99 2 to 3
4 0.059 0.016 452.74 133.50 667.52 -214.78 3 to 4
5 0.055 0.015 505.49 133.50 801.02 -295.54 4 to 5
_ 6 0.061 0.016 564.41 133.50 934.53 -370.12 5 to 6
7 0.079 0.021 640.80 133.50 1,068.03 -427.23 6 to 7
_ 8 0.114 0.030 750.57 133.50 1,201.54 -450.96 7 to 8
9 0.160 0.043 904.98 133.50 1,335.04 -430.07 8 to 9
10 0.186 0.050 1,084.39 133.50 1,468.55 -384.15 9 to 10
11 0.197 0.053 1,274.43 133.50 1,602.05 -327.62 10 to 11
12 0.195 0.052 1,463.10 133.50 1,735.55 -272.46 11 to N
13 0.184 0.049 1,641.29 133.50 1,869.06 -227.77 N to 1
14 0.168 0.045 1,803.83 133.50 2,002.56 -198.74 1 to 2
15 0.160 0.043 1,958.06 133.50 2,136.07 -178.01 2 to 3
16 0.156 0.042 2,108.78 133.50 2,269.57 -160.79 3 to 4
17 0.155 0.042 2,258.35 133.50 2,403.07 -144.72 4 to 5
18 0.157 0.042 2,410.38 133.50 _ 2,536.58 -126.20 5 to 6
19 0.162 0.043 2,566.96 133.50 2,670.08 -103.12 6 to 7
20 0.169 0.045 2,730.49 133.50 2,803.59 -73.10 7 to 8
21 0.174 0.047 2,898.42 133.50 2,937.09 -38.68 8 to 9
22 0.167 0.045 3,060.25 133.50 3,070.60 -10.34 9 to 10
23 0.152 0.041 3,207.25 133.50 3,204.10 3.15 10 to 11
24 0.135 0.036 3,337.60 133.50 3,337.60 0.00 11 to M
Max: 3.15
Average Hourly Flowrate(m3/s) 0.138 0.037 m3/s Min: -450.96
Average Hourly Flowrate(MGD) 3.153 0.846 MGD Veq 454.11 m3 _
0.120 MG
Graph WWTP 119,977 Gallons
Peak Hourly Flowrate(MGD) 4.49 1.2 MGD
Safety Factor
Ratio PHF 25% _ 50%
0.27 Veq(MG) 0.15 0.18
Veq(Gallons) 149,971 179,966

DocuSign Envelope ID:Cl7F4EE8-4D9C-4396-BC3A-A68623FCDC5C Burnsville WWTP-Equalization Basin Calculations
Typical Hourly Variation vs Burnsville Scaled Flow
0.250
0 200
a II
utso
LL 0 100
0.050
0.000
0 4 8 12 16 20 24
Time of Day
—s—Typical Horly Variation in Wastewater Flow Scaled Flowrate for Burnsville WWTP

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C Burnsville WWTP-Equalization Basin Calculations
Required Equalization Volume
4,500.00
4,000.00 •
3,500.00
3,000.00
cE
E
m
E 2,500.00
g 2,000.00
0
1,500.00
•
• •
1,000.00
• •
500.00
0.00 •
0 6 12 18 24
Time of Day
—0—Cumulative Flow —0—Average Ftowrate —0—Volume —0—Bottom —0—Top(Original Cain:Max Cumulative Flow) —0—Max Cumulative Flow(Original Cain) —0—Top(Average Flow)
(NOTE:Used the highest point(above the average flow rate line)and the Lowest point(below the average flow rate line)to calculate the Equalization Volume)

DocuSign Envelope ID:C17F4EE8-4D9C-4396-BC3A-A68823FCDC5C
Burnsville WWTP AEROBIC DIGESTOR CALCULATIONS
Aerobic Digester Volume Calculation
Flow(Q) 0.5 MGD
BODinf 280 mg/L
TSSinf 271 mg/L
BODeff 30 mg/L
TSSeff 30 mg/L
Yield Coefficient(Y) 0.65 lbsVSS/lbsBOD Assumption VSS/TSS
Influent VSS%(Assume) 80% Assumption VSS/TSS
Biomass Formed 677 lbs/day
Inert Solids Removed 201 lbs/day
Daily Solids Prodcution(WAS) 877 lbs/day
%VSS Reduction 36% (Metcalf&Eddy 5th Edition:figure 13-35)
Net Digester Solids Remaining 633.7584702 lbs/day
SRT 30 days
Digester Solids 19,013 lbs
Digester Solids Concentration(Assume) 2% (Thickened by Decanting)
Minimum Volume Required 113,985 gallons
Volume for Decanting(25%Additional) 28,496 gallons
Total Digester Volume 142,482 Gallons

lbcuapn Envelope 10 C1]FaEEO-4D6C-096tC]Y4.1123FLOCSC
1� WithersRavenet
•
System Curve 1E4ua14ation Basin Pumps TDB)
Burnsville WWTP
Yancey County.NC
0
\\wrintenMl01 cum\wrcurp-nasuni\W RShare\Asheville\22\22.1170\221172 Yancey Co.Pine Swamp Wastewater Rehab\Utilities\05-Design
Phase\05.01-Design Development\05.01.04•Cakulafions\(Compile Caks.dsidEqualiaation Pumps
Design pumping rate 105 gpm Total dynamic head 21 ft
Pumps oll elevation 2,554.20 ft Static head 21 ft
Lead pump on elevation 2,554.20 ft Force main length 31 ft
New Pipe Old Pipe
Large large Small Small New Old % Cumulative Cumulative Low High Additional New Pipe Old Pipe
Item Material Nominal Internal Nominal Internal Pipe Reducer Pipe Pipe R Total Velocity New Old Friction Friction Static Static System Minimum Maximum Minimum Maximum
Diameter Diameter Diameter Diameter Length Length Quantity C Factor C Factor Value Flow Flow Velocity Head Headless Headless Loss 1 Loss 2 Elevation Head Head Head TDH 1 TDH 1 TDH 2 TDH 2
Pipe DIP PC 35 4 00 in 4.30 in NA NA 31 ft NA NA 125 100 NA 103% 105 gpo 2.32 ft/s 008 ft 0.19 ft 0.29 ft 0.19 It 0.29 ft 2,57452 ft 20.32 ft 20.32 ft 0.001t 20.51 ft 2051 tt 2061. ft 20.61 ft
90*Bend DIP PC 19 400tn 4.30in NA NA NA NA 5 NA NA 0.51 100% 105 gpm 2.32 Ity1 008 f1 0.21ft 0.21 ft 0.41 f1 0.51ft 2.574.52 ft 20.32 ft 20.32 ft 0.00 ft 2073 ft 20.731t 20.83 ft 20.8311
This row is used only to compute the modelling head and should not be pnented.

• DonnSon Envelop D 017F<EEM.<DBL431.-13C.4.8523FCLGSC
;! WithersRavenel
System Curve Sludge Pumps TDH
Pine Swamp Wastewater Treatment Plant Rehabilitation
Town of Burnsville
Yancey County.North Carolina
Sludge System Curve
Dana Bolden
WR lob Number:08221172
Design pumping rate 71 gym Total dynamic head 14 fl
Pumps oft elevation 2.560.00 ft Static head 11 ft
Lead pump on elevation 2.561.00 ft Force main length 145 ft
New Pipe Old Pipe
Large Large Small Small New Old % Cumulative Cumulative Low High Additional New Pipe Old Pipe
Item Material Nominal Internal Nominal Internal Pipe Reducer Pipe Pipe K Total Velocity New Old Friction Friction Static Static System Minimum Maximum Minimum Maximum
Diameter Diameter Diameter Diameter Length Length Quantity C Factor C Factor Value Flow Flow Velocity Head Headless Headless Loss 1 Loss 1 Elevation Head Head Head TDH 1 TDH 1 TDH 2 TDH 2
Pipe DII'pt 3.46 in NA NA 145ft NA NA 125 100 NA 100% 71 gpm 2.42ft/s 0.09 ft 1.27 ft 1.91ft 1.27ft 1.91ft 2,571.00 ft 10.00ft 1100ft 0.00 ft 11.27ft 12.27ft 11.91 ft 12.91 ft
22.5°Bend DIP Pc 3.46 in NA NA NA NA 1 NA NA 0.29 100% 71gpm 2.42ft/s 0.09ft 0.03 ft 0.03 ft 1.29ft 1.94ft 2,562.00ft 1.00tt 2.00ft 0.00 ft 2.29 ft 3.29 It 2.94ft 394 It
45°Bend DIP Pi 346 in NA NA NA NA 1 NA NA 0,29 100% 71 gpm 2.42f1/s 0.09 ft 0.03 ft 0.03 ft 1.32 ft 1.97ft 2,561.00 ft 0.00 ft 1.00ft 0.00ft 1.32 ft 2.32 ft 1.97 ft 2.97 tt
Tee tthru branch) DIP Pc ,46 in NA NA NA NA 1 NA NA 1.08 100% 71 gam 2.42ft/s 0.09 ft 0.1011 0.10 ft 1.42ft 2.07ft 2,560.00 ft -1.00ft 0.00 ft 0.00 ft 0.42 ft 1.421t 1.07ft 2.07 ft
Gate Valve _ ��il'1.'��----AAAA -1 ;46 in NA NA NA NA 1 NA NA 0.14 100% 71gpm 242tt/s 0.09 f1 0.0111 0.01ft 1.43ft 2.08 ft 2,560.00 ft .1.00ft 0.00 f1 0.00 ft 043ft 1.43ft 1.08 ft 2.08 ft
11.25°Bend '46 in NA NA NA NA 1 NA NA 0.29 100% 71gpm 2.42ft/s 0.09 ft 003 f1 0.03ft 1.46 ft 2-10 ft 2.55900 ft -2.00 ft 1.00 ft 0.00 i1 0.54 ft 046 ft 0.10ft 1.10 ft
90°Bend 146in NA NA NA NA 2 NA NA 0.54 100% 71 gpm 2.42ft/s 0.09ft 0.10 tt 0.10ft 1.56 ft 2.20 tt 2.556.00 f1 .5.00 ft 400 ft 0.00 It 3.44I1 -2.44 ft -2.80ft -1.80ft
90°Bend a I,. 3.46 in NA NA NA NA 2 NA NA 0.54 100% 71 gpm 2.42 ft/s 0.09 ft 0.10 f 1 0.10 ft 1.65 ft 2.30 ft 2.571110 ft 10.00 ft 11.00 ft 0.00 ft 11.65 ft 12.65 ft 12.30 ft 13.30 ft
1.65 ft 2.30 ft 2,561.00ft -2,560.00 ft 0.00 ft kk#4kkkk M0N#894N 9MMkk4114 MN0NN4MM
1.65 ft 2.30 ft 2.561.00 ft .2.560.00 ff 0.00 ft######M# MMM0M#4# MOW k#MMMMMM
1.65 ft 2.30 It 2.561.00ft -2,560.00ft 0.00 ft 401##0M# N44444911 MM0M##MM MM##4N0M
1.65 ft 2.30 ft 2,561.00 ft •2,56000 ft 0.00 ft#Me##k#M N######M #000460M 090000MM
1.65 It 2.30 ft 2,561.00ft •2,560.00ft 0.00 ft#MM##M#k 09099900 4MMMNMMN 1/4M##0M0
1.65 ft 2.30 ft -2,561.00 ft -2.560.00ft 0.00 ft#10011011 M4MM#M## MM11#100# MOM
1.65ft 2.30 ft -2.561.00ft -2,560.00 ft 0.00 ft#Mkk4#1111 ##4#Nk## M#M4M44M MNNMMN4#
1.65ft 2.30 ft -2.56100ft -2,560.00ft 0.00 ft 11044440 M#MMM#M# 0*4990N% MM0M44N4
1.65ft 2.30 ft 2.561.00ft -2,560.00ft 0.00ft#Mk#4MMN NMN4k#MM 118M0014 MNNNMNMM
1.65 ft 2.30 f1 -2.56100 tt -2.560.00ft 0.00 ft#MMM#460 904999M0 kk#MM6## 4#M44046
1.65ft 2.30 ft -2,561.03It -2,560.00 ft 0.00ft#NNNM##k MM44Me44 ##k#MM*# NM44441/N
1.65 ft 2.30 tt -2,561.00ft -2.56000ft 0.00 ft 44444494 81ftlM0M#N M#4#Ng4g k4###MM%
1.65ft 2.30 ft -2,561.00ft -2.560.00 ft 0.00 ft 04444M00 00900964 NNM4k4Nk MNM#4MMk
1.65 ft 2.30 ft -2,561.00ft -2.560.00 ft 0.00 ft MMMM#MMM M##MMg0M #M41141011 #MMM##44
1.65 ft 2.30 It 2.561.00ft -2.560.00ft 0.00 It 4400444k 40440##4 00400040 Md4#4MN4
1.65 ft 2.30 ft 2.561.00f1 -2,560.00ft 0.00 ft#0099010 MM#MM##M #M#4M#Me M4###M9M
1.65 ft 2.30 ft 2.561.00 ft -2.560.00 ft 0.00 ft 491/44410 #MMM#k44 #MM#M#4M N14k9k*k
1.65 ft 2.30ft -2,561O0ft -2.56000 tt 0.00 ft k0Nk4MMN MOM MUM 006044NM
Th,+row I.used only 1u,,nnpute the ccuhollmg head and should not be printed 13.30ft

DocuSign Envelope ID:C17F4EE8-409C-4396-BC3A-A68823FCDC5C
Repurposed Blowers Calculations
Blower Discharge Pressure(P) 5 psi
Mechanical Efficiency 50% (Assuming only 50%Efficiency)
Existing Hibon Centrifugal Blower Motor Hp BHP HP SCFM 1/2 SCFM
Blower#1 150 75 53 2642 1321
Blower#2 150 75 53 2642 1321
Blower#3 125 63 44 2202 1101
2 Blowers Running(Minimum Existing Capacity): 2422
NOTE:
HP=SCFM *(0.23)* (((((14.7+P)/14.7))^0.283)-1)
BHP=HP/0.70
Motor HP=BHP/Efficiency(85%)
Volume
Gallons Cub.Ft SCFM
Air Requirements for Aerboic Digester 7480.5195 1000 30
Aerobic Digester 1 (New 0.5 MGD) 142482 19047.03 571
Existing Digester 2(0.3 MGD) 67698.701 9050 272
TOTAL Required SCFM for Digester 843
NOTE:Assumes 30 SCFM per 1000 cuft&coarse bubble

DocuS n Enm.:Nem Cr:Fa0E4 09U.4t54-ac54>53t.S r.,I,.:
111% WithersRavenel
Extended Aeration System Structure
Floatation Cakulatioos
Pine Swamp WWTP Rehabilitation
Boonville.NC
Jute S.2024
Dana Bolden PE
DWI Project No.SRP-WARP-0173&WR Project No.08221172.00
\\wrintemat01.corn\wrcorp-nasuni\WRShare\Asheville\22\22-1170\221172 Yancey Co.Pine Swamp Wastewater Rehab\Utilities\05-Design Phase\05 01-Design Development\05 0104-Cakulations\!Compile Calcs.xlsx)Aeration System Flotation
Structure Flotation Cakulabons
Extended Aeration System Structure Overburden
Unit Weights Soil
unit Weight of Water Unit Weight of Unit Weight of Specific Gravity Unit Weight of
Concrete Soil of Soil Saturated Soil • e
62AIbs/lt' 1501bs/It" 1201b5/9' 2.75 76 tOSR1' 78.no It a } Rim 2.570.45tt
Base 0.00 to Ground 2,565.41tt
Diameter Thickness Volume Concrete Weight Concrete
78.00 ft 24.00 in 9,557R' 1,433,509151 5.040
Walls Without Bouyancy Ring j
Diameter Wall Height Volume Concrete Weight Concrete
Outside 78.0011 16.5011 0 n' 0Ibs
Inside 78.0011
Walls With Buoyancy Ring -2.00 ft
Diameter Wall Height Volume Concrete Weight Concrete
Outside 78.0011 0.00It 01t' 0lbs
Inside 78.0011
To0 Slab _ t Water Level
•
Diameter Thickness Volume Concrete Weight Concrete 1 11.4611
78.00ft 0.00In on' 0lbs
Soil
Diameter Soil Height Volume Soil Weight Soil
• Outside 78.0011 11.46 ff Oh' 0105 }
Inside 78.00/1
Sliding Resistance Due To Interaction Between sou&Vault Wall ill 0.00 m 0.00ft
Friction Resistance to
..,t..r u•i vzll�r.CLn Ka Ratio P Coefficient III Sliding
0.37 OM3,4651bs 254.752 Ms • 4553.958
Hatch Opening 24.00 to IMIIIIMMINEM1111111111111111 80[10m
Circular 1 e mi
_._ _- _____ _y
Diameter Volume Concrete Weight Concrete
• a.00 n' 0lbs
0.00 n' 010s
O.ao n• 0Ms
Rectangular
Width Length Volume Concrete Weight Concrete
60.00 in 72.00 in 0.001I' 0 tbs
0.00 f1' 01bs
0.00 fr' 0m5
Total Weight to be Subtracted 01E5
Frame&Cover
Weight
Buoyancy Forte
Buoyancy Force
4,609,705 lbs
Factor oe Safety
Structure Weight 1,558.5091bs
Soil Weighs Olbs
Friction force 254,7521bs
Downward Force 1,813,260 lbs
Buoyant Force 4,609,705 lbs Safety factor is greater than I under normal circumstances.However at WL-100 year flood elevation,safety factor drops below
Factor of Safety 0.39 1.Due to low factor of safety.hydrostatic relief valves have been added.See note on sheet M101.

ooausen Eiw,sex io CI 7 F4EEP,OK.4JYr9Can-aas4a3Fcp_sc
10 WithersRavenel
Chlorine Contact Basin Structure Floatation
Floatation Calculations
Yancey County Si Town of Burnsville
Pine Swamp WWTP Rehabilitation
Burnsville.NC
Dares Bolden
June 13.2024
\\wnntemal0l.com\wrcorp-nasuni\WRShare\Asheville\22\2 2-11 7012 21 1 7 2-Yancey Co.Pine Swamp Wastewater Rehab\Ut4rties\05-Design Phase\05.01-Design Du..lotWI t\05.01 O4-Calculations\(Compile Caks.olsoiChlorineContact Basin
Flotation
Concrete Structure Flotation Calculations .Wall Outside Width 17.00n
Chlorine Contact Basin Structure Floatation •Wall Outside Length 20.00 ft
Unit Weights
Unit Weight of Water Unit Weight of Unit Weight of Specific Gravity Unit Weight of Overburden I
Concrete Soil of Soil Saturated Soil _ '
82.4 lbs/ft' 150lbs/11' 1201bs/ft' 2.75 761bse - - - •
-- - - - -.9 t Rim 2568.98It
Base f In 0.00 Ground 2,562.37 ft
Width Length Thickness Volume Concrete Weight Concrete
19.00ft 22.00ft 12.00 in 418 n' 62,700lbs 6.61R
Walls Without Bouyarrcy Ring +
Width Length Wall Height Volume Concrete Weight Concrete
•
Outside 17.00ft 20.00ft 10.03ft 702n' 105,3151bs
I ---
Inside 15.00 ft 18.00 ft
Walls With Buoyancy Ring -1.63ft
Width Length Wall Height Volume Concrete Weight Concrete
Outside 19.00ft 22.00R 0.0011 0rt' 0lls
I Inside 15.00 ft 18.00ft 0
Top Slab I f Water Level
Width Length Thickness Volume Concrete.Veight Concrete 342 ft
17.00 ft 20.001f 0.00 In On' OWs ii •...i..
Soil 15.00 ft •
Width Length Soil Height Volume Soil Weight Soil Wall levee i c^ii'n
Outside 1.00ft 2.00n 3.42n 782 f[' 4,3251bs 16.00 in a
insure v.00n 20.00
0 T ft
11111
Sliding Resistance Due To Interaction Between Soil&Vault Wall 12.00 1 111 0.00R
Resistance to
Saturated',elk,.Cl.o - - P Sliding
0.37 0.30_ 576 lbs 14,1711b5 1 1200 n.,. + 2558.95 ft
Hatch Opening 12.00 in IIIMIIIIIIIIIMIIIIIIIIIIII Bottom
Circular 1 is---. _ __ __- - - ___ _ __ __-ri
•
Diameter Volume Concrete Weight Concrete
On' Oils -'Base Widn, 19.00ft
Oft' Olbs •-Bose Length 22.00ft
On' Olbs
Rectangular
Width Length Volu me Concrete Weight Concrete
Olt' Olbs
0ne Oils
O n' 0lbs
Total Weight to be Subtracted Oils
Frame&Cover
Weight
Buoyancy Force
Buoyancy Force
1332241bs
Factor of Safety
Structure Weight 1580151bs
Soil Weight 9,325Ibs
Friction Force 14,171105
Downward Force 186,5121os
Buoyant Force 133,224 lbs
Factor of Safety 1.40
•