NC0025071_Authorization to Construct_20180906

Ph W I <
WDICKSON
community infrastructure consultants
September 6, 2018
Ms. Julie Grzyb
Supervisor
NC NPDES Permitting
NC Department of Environmental Quality
1617 Mail Service Center
Raleigh, NC 27669-1617
RE: Mebane Bridge WWTP Residuals Management System Rehabilitation
Application for Authorization to Construct Permit
WK Dickson Project No. 20170041.00.CL
Dear Ms. Grzyb:
I am pleased to submit the Final Design Package for the Mebane Bridge WWTP Residuals
Management System Rehabilitation, for the Division's review and comment. The Mebane Bridge
WWTP currently operates under NPDES Permit NC 0025071. This project includes the rehabilitation
of two RAS/WAS pump stations with a more accessible above ground configuration, replacement of
RAS/WAS pumps, addition of a sludge holding tank with corresponding sludge pumps, and the
addition of a sludge chemical stabilization unit.
This project will include the modification of existing RAS/WAS facilities and modification of the
sludge stabilization process from aerobic digestion to chemical stabilization. The construction phase
of this project is expected to take 9 months.
This package is being submitted in accordance with the Bid and Design Document Submittal
Checklist and the Application for Authorization to Construct. This submittal package includes:
♦ One (1) complete set (as hard copies) of the sealed plans, specifications, and engineering
calculations
♦ One (1) complete set (as a digital copy) of the sealed plans, specifications, and engineering
calculations
♦ Signed Application for Authorization to Construct
♦ NPDES Permit
♦ EPA Consent Order
616 Colonnade Drive
Charlotte, NC 28205
Tel. [phone]
www.wkdickson.com Aviation • Water Resources • Urban Development • Geomatics

Mebane Bridge WWTP Residuals Management System Rehabilitation
Page 2
Please do not hesitate to contact me with any questions or conunents at [phone] or
[e-mail].
Sincerely,
W.K. Dickson & Co., Inc.
j es "Jimmy" Holland
roject Manager
Enclosures
Cc: Brad Corcoran — City of Eden
Anita Reed — SRF Wastewater Unit Supervisor, NC DWI

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
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. 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.
C. The plans and specifications submitted must represent a completed final design that is ready to advertise for bid.
D. Any content changes made to this Form ATC -12-14 shall result in the application package being returned.
E. 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.
F. Check the boxes below to indicate that the information is provided and the requirements are met.
G. 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.
H. 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.
I. For more information, visit the Division of Water Resources web site at: https://deg.nc.gov/about/divisions/water-resources/water-
resources-permits/wastewater-branch/npdes-wastewater/authorization-to-construct.
J. In addition to this Authorization to Construct, the Applicant should be aware that other permits maybe 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
City of Eden
Signature authority's name per 15A NCAC 02T .0106(b)
Brad Corcoran
Signature authority's title
City Manager
Complete mailing address
P.0 Box 70, Eden, NC 27289-0070
Telephone number
[phone]
Email address
[e-mail]
B. PROFESSIONAL ENGINEER
Professional Engineer's name
William B Keaton
Professional Engineer's title
Program Manager
North Carolina Professional Engineer's License No.
045626
Firm name
WK Dickson & Co., Inc.
Firm License number
F-0374
Complete mailing address
616 Colonnade Dr., Charlotte, NC 28205
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 1

Water Resources
ENVIRONMENTAL QUALITY
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
Telephone number [phone]
Email address [e-mail]
C. NPDES PERMIT
NPDES Permit number
NCO025071
Current Permitted flow (MGD) — include permit
flow phases if applicable
13.5
D. PROJECT DESCRIPTION
Provide a brief description of the project: This project will include the modification of RAS pump stations 1 and 2, and the
installation of a new sludee chemical stabilization unit. sludize storaee tank. and sludee transfer DumD station. Modifications to
RAS Pump Station 1 to include replacement of the existing below grade RAS pumps with new above grade, self -priming, variable
speed pump assemblies, and wet well rehabilitation and installation of suction lift WAS sludge pumps. Modifications to RAS
Pump Station 2 include the replacement of existing below grade RAS pumps with new above grade, self priming, variable speed
pump assemblies, wet well rehabilitation, and installation of new submersible WAS sludge pumps. The installation of a new
sludge chemical stabilization unit, sludge storage tank, and packaged Sludge Transfer Pump Station will allow for quicker
treatment and conveyance of treated sludge to the existing sludge dewatering facility.
SECTION 3: APPLICATION ITEMS REQUIRED FOR SUBMITTAL FOR ALL PROJECTS
A. Cover Letter
® 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.
❑ If any of the requirements of 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General Statute 133-31 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.
B. NPDES Permit
® 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
® 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.
® Not Applicable.
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 2

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
E. Engineering Plans
® Per 15A NCAC 02T .0504(c)(1), submit one set of detailed plans that have been signed, sealed and dated by a North Carolina
Licensed Professional Engineer.
® 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.
® Plans must be labeled as follows: FINAL DRAWING — FOR REVIEW PURPOSES ONLY— NOT RELEASED FOR CONSTRUCTION.
® 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 ❑ Not Applicable
® Process Mechanical ❑ Not Applicable
❑ Structural ® Not Applicable
® Electrical ❑ Not Applicable
❑ Instrumentation/Controls ® Not Applicable
❑ Architectural ® Not Applicable
❑ Building Mechanical ® Not Applicable
❑ Building Plumbing ® Not Applicable
® 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?
® 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. ® Engineering Specifications
® Per 15A NCAC 02T .0504(c)(2), submit one set of specifications that have been signed, sealed and dated by a North Carolina
Licensed Professional Engineer.
® Specifications must be labeled as follows: FINAL SPECIFICATIONS — FOR REVIEW PURPOSES ONLY — NOT RELEASED FOR
CONSTRUCTION.
Specifications shall include:
® Specifications for all applicable disciplines needed for bidding and construction of the proposed project (check as
appropriate):
® Civil ❑ Not Applicable
® Process Mechanical ❑ Not Applicable
❑ Structural ® Not Applicable
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 3

Water Resources
ENVIRONMENTAL QUALITY
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
® Electrical ❑ Not Applicable
❑ Instrumentation/Controls ® Not Applicable
❑ Architectural ® Not Applicable
❑ Building Mechanical ® Not Applicable
❑ Building Plumbing ® Not Applicable
® Detailed specifications for all treatment units and processes including piping, valves, equipment (pumps, blowers, mixers,
diffusers, etc.), and instrumentation.
® Means of ensuring quality and integrity of the finished product including leakage testing requirements for structures and
pipelines, and performance testing requirements for equipment.
® Bid Form for publicly bid projects.
G. Construction Sequence Plan
® 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: Page G.2 of drawings.
H. Engineering Calculations NEED FINAL CALCS
® 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 4.13.2 of this form were
determined.
❑ Pollutant loading for each treatment unit demonstrating how the design effluent concentrations in Section 4.13.2 of this form
were determined.
❑ Hydraulic loading for each treatment unit.
❑ Sizing criteria for each treatment unit and associated equipment (blowers, mixers, pumps, etc.)
❑ Total dynamic head (TDH) calculations and system curve analysis for each pump specified that is included in Section 4.C.6.
❑ 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
❑ Provide the following information for each permit and/or certification required for this project:
Permit/Certification
Not
Applicable
Date
Submitted
Date
Approved
Permit/
Certification
Number
If Not Issued Provide
Status and Expected
Issuance Date
Dam Safety
X
Soil Erosion and Sediment Control
X
USCOE / Section 404 Permit
X
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 4

Water Resources
ENVIRONMENTAL QUALITY
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
Water Quality Certification (401)
X
USCOE / Section 10
X
Stormwater Management Plan
X
CAMA
X
NCDOT Encroachment Agreement
X
Railroad Encroachment Agreement
X
Other:
X
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 15A NCAC 02T .0504(1) and 15A NCAC 02T
.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.
❑ Not Applicable.
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 5

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
SECTION 4: PROJECT INFORMATION
A. WASTEWATER TREATMENT PLANT FLOW INFORMATION —COMPLETE FOR NEW OR EXPANDING FACILITIES
1. Provide the following flow information:
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 6
Plant Flows
Existing Plant Design
13.5 MGD
Current NPDES Permit Limit
13.5 MGD
Current Annual Average
(past 12 months)
4.506 MGD
For Past 12 Months:
Start Date: month/yr
End Date: month/yr
For Past 24 Months:
Start Date: month/yr
End Date: month/yr
Maximum Month
MGD
MGD
Maximum Day
MGD
MGD
Peak Hour
MGD
MGD
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 6

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
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 133-31 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):
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:
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:
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 7
Project Basis of Design
Design Influent
Design Influent
Influent
Concentration
Load
Concentration -
(Must be
(Must be
Current Annual
supported by
supported by
Design Effluent
Average (past
Engineering
Engineering
Concentration and/or
NPDES Permit Limits
12 months) if
Calculations
Calculations
Load
(monthly average)
Parameter
Available
[Section 3.H])
[Section 3.H])
Ammonia Nitrogen
14.8 mg/L Summer
14.8 mg/L Summer
(NH3-N)
mg/L
mg/L
Ib/day
N/A mg/L Winter
N/A mg/L Winter
Biochemical
30.0 mg/L Summer
30.0 mg/L Summer
Oxygen Demand
mg/L
mg/L
Ib/day
(BODS)
30.0 mg/L Winter
30.0 mg/L Winter
Fecal Coliform
200 per 100 mL
200 per 100 mL
Nitrate + Nitrite
Nitrogen (NO3-N +
N/A mg/L
N/A mg/L
NO2-N)
Total Kjeldahl
mg/L
Nitrogen
N/A mg/L
N/A mg/L
Total Nitrogen
N/A Ib/year
N/A Ib/year
N/A mg/L
N/A mg/L
Total Phosphorus
mg/L
mg/L
Ib/day
N/A Ib/year
N/A Ib/year
Total Suspended
mg/L
mg/L
Ib/day
30.0 mg/L
30.0 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:
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 7

Water Resources
ENVIRONMENTAL QUALITY
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
4. Per 15A NCAC 02T .0505(1), 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:
5. Per 15A NCAC 02T .0505(k), multiple pumps shall be provided wherever pumps are used. Is this condition met by the
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.
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
8. Per 15A NCAC 02T .0505(gi, the public shall be prohibited from access to the wastewater treatment facilities. Explain how
the design complies with this requirement: Facility enclosed within 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:
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):
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 8
No. ofPl
an Sheet
SReferencepecification
Calculations
Treatment Unit
Units
Type
Size per Unit
f
Reerence
Provided?
(Yes or No)
Manual Bar Screen
N/A
MGD at peak hourly flow
Mechanical Bar
N/A
MGD at peak hourly flow
Screen
Grit Removal
N/A
MGD at peak hourly flow
Flow Equalization
N/A
--
gallons
Primary Clarifier
N/A
Circular
ft diameter; ft side
water depth
Primary Clarifier
N/A
Rectangular
square feet; ft side
water depth
Other
N/A
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 8

Water Resources
ENVIRONMENTAL QUALITY
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
SECONDARY TREATMENT (BIOLOGICAL REACTORS AND CLARIFIERS) (i.e., biological and chemical processes to remove
organics and nutrients)
3. TERTIARY TREATMENT
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
Aerobic Zones/
N/A
Circular
gallons
Tanks
N/A
(Parallel; in
side water depth
Anoxic Zones/
N/A
Rectangular
gallons
Tanks
side water depth
Anaerobic
N/A
(Gas;
gallons
Zones/Tanks
N/A
tablet; liquid)
square feet
Sequencing Batch
N/A
--
gallons
Reactor (SBR)
N/A
-
gallons
Membrane
N/A
-
gallons
Bioreactor (MBR)
N/A
gallons
Secondary Clarifier
N/A
Circular
ft diameter; ft
side water depth
Secondary Clarifier
N/A
Rectangular
square feet; ft
side water depth
Other
N/A
3. TERTIARY TREATMENT
4. DISINFECTION
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
Tertiary Clarifier
N/A
Circular
ft diameter; ft
Ultraviolet Light
N/A
(Parallel; in
side water depth
Tertiary Clarifier
N/A
Rectangular
square feet; ft
side water depth
Tertiary Filter
N/A
(Gas;
square feet
Tertiary Membrane
N/A
tablet; liquid)
square feet
Filtration
Post -Treatment
N/A
-
gallons
Flow Equalization
Post -Aeration
N/A
gallons
Other
N/A
4. DISINFECTION
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 9
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
gal/day per bank at
Ultraviolet Light
N/A
(Parallel; in
peak hourly flow;
series)
number of banks;
number of lamps/bank
Chlorination
N/A
(Gas;
gallons of contact
tablet; liquid)
tank/unit
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 9

Water Resources
ENVIRONMENTAL QUALITY
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
Dechlorination
N/A
(Gas;
gallons of contact
Plan Sheet
Specification
Calculations
Treatment Unit
Units
tablet; liquid)
tank/unit
Reference
Reference
Provided?
5. RESIDUALS TREATMENT
6. PUMP SYSTEMS (include influent, intermediate, effluent, major recycles, waste sludge, thickened waste sludge and plant
drain pumps)
Location
No. of
purpose
Type
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
40.5
G.30
44 42 59
RAS/WAS Pump
Station 1
3
RAS
(Yes or No)
Gravity Thickening
N/A
G.12 -G.15
square feet; ft side
RAS/WAS Pump
Station 1
2
WAS
Tank
200
46.33
water depth
44 42 59
RAS/WAS Pump
Station 2
3
Mechanical
Suction Lift
5,544
40.5
G.19 -G.20
44 42 59
RAS/WAS Pump
Station 2
Thickening/
N/A
Submersible
dry Ib/hour
44.5
G.19 -G.20
43 21 13.16
Dewatering
Aerobic Digestion
N/A
gallons
Anaerobic
N/A
gallons
Digestion
Composting
N/A
dry Ib/hour
Drying
N/A
dry Ib/hour
Sludge
Other
1
Chemical
200 GPM
G.22
No
No
Stabilization
6. PUMP SYSTEMS (include influent, intermediate, effluent, major recycles, waste sludge, thickened waste sludge and plant
drain pumps)
Location
No. of
Pumps
purpose
Type
Capacity of
each pump
Plan Sheet
Reference
Specification
Reference
GPM
TDH
Sludge Holding Tank
2
Sludge Transfer
Suction Lift
208
40.5
G.30
44 42 59
RAS/WAS Pump
Station 1
3
RAS
Suction Lift
3,831
29.7
G.12 -G.15
44 42 59
RAS/WAS Pump
Station 1
2
WAS
Suction Lift
200
46.33
G.12 -G.15
44 42 59
RAS/WAS Pump
Station 2
3
RAS
Suction Lift
5,544
40.5
G.19 -G.20
44 42 59
RAS/WAS Pump
Station 2
2
WAS
Submersible
200
44.5
G.19 -G.20
43 21 13.16
7. MIXERS
Location
No. of
Mixers
Purpose
Type
Power of
each MP ixer
plan Sheet
Reference
Specification
Reference
Sludge Holding Tank
1
Big bubble Mixer
Compressed Gas
Mixing
10
G.26 -G.31
46 41 28
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 10

Water Resources
ENVIRONMENTAL QUALITY
8. BLOWERS
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
Location
No. of
Blowers
purpose
Type
Capacity of
each Blower
(CFM)
plan Sheet
Reference
Specification
Reference
N/A
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
9. ODOR CONTROL
Location
No. of
Units
Purpose
Type
Plan Sheet
Reference
Specification
Reference
N/A
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
D. SETBACKS —COMPLETE FOR NEW WASTEWATER TREATMENT STRUCTURES
The minimum distance for each setback parameter to the wastewater treatment/storage units per 15A NCAC 02T .0506(b)
are as follows:
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: N/A
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 11
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: N/A
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 11

Water Resources
ENVIRONMENTAL OUALITY
State of North Carolina
Department of Environmental Quality
sion of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
SECTION 5: APPLICATION CERTIFICATION BY PROFESSIONAL ENGINEER
Professional Engineer's Certification per 15A NCAC 02T .0105:
I, William B Keaton, P.E., attest that this application package for an Authorization to Construct
(Typed Name of Professional Engineer)
for the Eden Wastewater Treatment Residuals Rehabilitation
(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. 01001 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 4.13.1 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 143-215.68, 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:
•o '
2 • ti •, y
a SEAL
045626
INE•' \
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 12

Water Resources
ENVIRONMENTAL OU ALIIY
State of North Carolina
Department of Environmental Quality
sion of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM AC-12-14)
SECTION 6: APPLICATION CERTIFICATION BY APPLICANT
Applicant's Certification per i5A NCAC 02T .01061b1a
I, Brad Corcoran, attest that this application package for an Authorization to Construct
(Typed Name of Signature Authority and Title)
for the Eden Wastewater Treatment Residuals Rehabilitation
(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
any false statement, rep, esema
which may include a fine nott tj
Signature:
General Statutes 143-215.6A and 143-215.68 any person who knowingly makes
ar certification in any application package shall be guilty of a Class 2 misdemeanor,
d $10,000, as well as civil penalties up to $25,000 per violation.
Date:
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 276994617 RALEIGH, NORTH CAROLINA 27604
TELEPHONE NUMBER: [phone]
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 13

North Carolina Department of Environmental Quality
Division of Water Infrastructure
BID AND DESIGN DOCUMENT SUBMITTAL CHECKLIST
(Form PS -SUBMITTAL -05/18)
SECTION 1: INSTRUCTIONS AND INFORMATION
A. The Division of Water Infrastructure will accept a submittal package for review only if all of the items are provided and the
submittal is complete. Failure to submit all of the required items may result in an inability to meet funding deadlines and
subsequent loss of funding assurance.
B. The submittal shall include a completed copy of this submittal checklist, one copy of plans and specifications, and all supporting
documentation and attachments. All supporting information should be submitted bound or placed in a 3 -ring binder.
C. Check the boxes below to indicate the information is provided and the requirements are met.
D. Plans and specifications must be prepared in accordance with North Carolina General Statute 133-3 and North Carolina General
Statute 143-215.1.
E. The plans and specifications submitted must represent a completed final design that is ready to advertise for bid.
SECTION 2: CONTACT INFORMATION
A. Owner Information
Owner
City of Eden
Name of Owner's Authorized Representative
Brad Corcoran
Title
City Manager
Complete mailing address
P.0 Box 70, Eden, NC 27289-0070
Telephone number
[phone]
Email address
[e-mail]
B. Professional Engineer Information
Professional Engineer's name
William B Keaton
North Carolina Professional Engineer's License No.
045626
Firm name
WK Dickson & Co., Inc.
Firm License number
F-0374
Complete mailing address
616 Colonnade Dr., Charlotte, NC 28205
Telephone number
[phone]
Email address
[e-mail]
Form PS -SUBMITTAL -05/18 Page 1

SECTION 3: PROJECT INFORMATION
A. Project Title
Eden Wastewater Treatment Plant Residuals Rehabilitation
B. Project Description
Please provide a full description of the project. This description should be similar or identical to what is imbedded in the
Summary of Work section of the specifications. Include all changes to the existing system (demolition, rehabilitation, additions,
etc.):
This project will include the modification of RAS pump stations 1 and 2, and the installation of a new sludge chemical
stabilization unit, sludge storage tank, and sludge transfer pump station. Modifications to RAS Pump Station 1 to include
replacement of the existing below grade RAS pumps with new above grade, self -priming, variable speed pump assemblies, and
wet well rehabilitation and installation of suction lift WAS sludge pumps. Modifications to RAS Pump Station 2 include the
replacement of existing below grade RAS pumps with new above grade, self priming, variable speed pump assemblies, wet well
rehabilitation, and installation of new submersible WAS sludge pumps. The installation of a new sludge chemical stabilization
unit, sludge storage tank, and packaged Sludge Transfer Pump Station will allow for quicker treatment and conveyance of
treated sludge to the existing sludge dewatering facility.
® Does the Project design match the Engineering Report/Environmental Information Document (ER/EID) Approval Letter,
Categorical Exclusion (CE), Finding of No Significant Impact (FONSI), or issued Record of Decision (ROD)? ® Yes ❑ No.
If no, clearly describe any portions of the design that vary from the approved documents and the reasons for the
differences. N/A
Note: based upon the scope of differences, an Amendment to the ER/EID or CE, FONSI, or ROD may be required.
SECTION 4: INFORMATION REQUIRED FOR ALL PROJECT TYPES
A. For Wastewater Treatment Plant projects:
® Complete Attachment A, filling out specific information regarding this project
B. For Sewer Infrastructure projects:
❑ Complete Attachment B, filling out specific information regarding this project
C. For Drinking Water projects:
❑ Complete Attachment C, filling out specific information regarding this project
D. Permits
❑ Provide copies of all permits and/or certifications that are required for this project as identified below.
Form PS -SUBMITTAL -05/18 Page 2
v
If Not Issued
Does this Permit match the
o
i
Provide Status and
Design Documents for this
O a
0.
" 3
co
m a
Expected Issuance
Project as Submitted for
Permit/Certification
Z a
o ff
o a
Date
Review?
September
® Yes ❑ No
Authorization to Construct*
7, 2018
CAMA
X
❑ Yes ❑ No
Dam Safety
X
❑ Yes ❑ No
NCDOT Encroachment
❑ Yes ❑ No
X
Agreement
February
® Yes ❑ No
NPDES
3, 2015
Railroad Encroachment
❑ Yes ❑ No
X
Agreement
Form PS -SUBMITTAL -05/18 Page 2

*Provide application if not issued as of date of submittal of this package.
❑ If no, clearly describe any portions of the design that vary from the Permit and the reasons for the differences.
Note: Based upon the scope of differences, a permit revisions may be required.
E. Easements
❑ Provide status of all easements required for completion of this project. ® Not Applicable.
F. Cost Estimate
® For all project components provide a project line -item cost estimate that has been prepared or updated not more than 60
days prior to submittal of this package. This estimate should be at least as detailed as the bid form in the specifications.
® Does the project design include any bid alternates? ® Yes ❑ No.
® If yes, provide a separate project line -item cost estimate for each bid alternate.
G. Engineering Plans
® Submit one set of detailed plans that have been signed, sealed and dated by a North Carolina Licensed Professional Engineer
on each sheet of the engineering drawings.
® 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.
® Plans must be labeled as follows: FINAL DRAWING — FOR REVIEW PURPOSES ONLY— NOT RELEASED FOR CONSTRUCTION.
® The cover sheet of the plans must contain the CDBG, SRF, SRL, SEL, and/or State Grant Project Number.
® Plans shall include all applicable disciplines needed for bidding and construction of the proposed project.
H. ® Engineering Specifications
® Submit one set of specifications that have been signed, sealed and dated by a North Carolina Licensed Professional Engineer.
® Specifications must be labeled as follows: FINAL SPECIFICATIONS — FOR REVIEW PURPOSES ONLY — NOT RELEASED FOR
CONSTRUCTION.
® The cover sheet of the specifications must contain the SRF, SRL, SEL, and/or State Grant Project Number.
® A reasonable subsurface investigation must be made available to the contractor. If it is not included in the specifications,
the specifications must advise where a copy of the report can be observed.
® Specifications shall include all applicable disciplines needed for bidding and construction of the proposed project.
Form PS -SUBMITTAL -05/18 Page 3
vIf
Not Issued
Does this Permit match the
o
i
Provide Status and
Design Documents for this
c a
3
m a
Expected Issuance
Project as Submitted for
Permit/Certification
Z a
C "'
o a
Date
Review?
Sewer Extension*
X
❑ Yes ❑ No
Soil Erosion and Sediment
X
1:1 Yes [J No
Control
Stormwater Management
X
❑ Yes ❑ No
Plan
USCOE/Section 10
X
❑ Yes ❑ No
USCOE/Section 404 Permit
X
❑ Yes ❑ No
Water Quality Certification
X
❑ Yes ❑ No
401
Other:
X
❑ Yes ❑ No
*Provide application if not issued as of date of submittal of this package.
❑ If no, clearly describe any portions of the design that vary from the Permit and the reasons for the differences.
Note: Based upon the scope of differences, a permit revisions may be required.
E. Easements
❑ Provide status of all easements required for completion of this project. ® Not Applicable.
F. Cost Estimate
® For all project components provide a project line -item cost estimate that has been prepared or updated not more than 60
days prior to submittal of this package. This estimate should be at least as detailed as the bid form in the specifications.
® Does the project design include any bid alternates? ® Yes ❑ No.
® If yes, provide a separate project line -item cost estimate for each bid alternate.
G. Engineering Plans
® Submit one set of detailed plans that have been signed, sealed and dated by a North Carolina Licensed Professional Engineer
on each sheet of the engineering drawings.
® 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.
® Plans must be labeled as follows: FINAL DRAWING — FOR REVIEW PURPOSES ONLY— NOT RELEASED FOR CONSTRUCTION.
® The cover sheet of the plans must contain the CDBG, SRF, SRL, SEL, and/or State Grant Project Number.
® Plans shall include all applicable disciplines needed for bidding and construction of the proposed project.
H. ® Engineering Specifications
® Submit one set of specifications that have been signed, sealed and dated by a North Carolina Licensed Professional Engineer.
® Specifications must be labeled as follows: FINAL SPECIFICATIONS — FOR REVIEW PURPOSES ONLY — NOT RELEASED FOR
CONSTRUCTION.
® The cover sheet of the specifications must contain the SRF, SRL, SEL, and/or State Grant Project Number.
® A reasonable subsurface investigation must be made available to the contractor. If it is not included in the specifications,
the specifications must advise where a copy of the report can be observed.
® Specifications shall include all applicable disciplines needed for bidding and construction of the proposed project.
Form PS -SUBMITTAL -05/18 Page 3

® Contract duration
❑ Applicable encroachment agreements (NCDOT, railroad, utilities, etc.)
® Advertisement for Bids
® Information for Bidders
® Bid Form
➢ Are portions of the project ineligible for CDBG, SRF, SRL, SEL, and/or State Grant funds? ❑ Yes or ❑ No. If yes, the bid
form must clearly identify and break out separately the eligible and ineligible items.
® Bid Bond
® Agreement
® Payment Bond
® Performance Bond
® Notice of Award with lines for signatures of the Owner and the Contractor (cannot substitute signature by Engineer)
® Notice to Proceed with lines for signature of the Owner and the Contractor (cannot substitute signature by Engineer)
® Change Order Form
® General Conditions
❑ Special Conditions
For SRF and State funded projects only:
® MBE/WBE (DBE) Compliance Supplement
Additional for SRF funded projects only:
® Davis -Bacon Specifications
® Wage Determination Schedule
® American Iron and Steel Provisions
For CDBG funded projects only:
❑ MBE/WBE Compliance Instruction and Forms
❑ Contractor Table CDBG-I MBE/WBE
❑ Advertisement for Bids
❑ Statement encouraging Historically Underutilized Businesses (HUB) to submit bids/proposals
❑ Statement encouraging Minority/Women Owner Businesses to submit bids/proposals
❑ Section 3 Clause
❑ Contractor's Section 3 Plan Template
❑ Labor Standard provisions
❑ Davis -Bacon Wage Determination
❑ Contract Provisions
❑ Certificate of Eligibility
❑ Employment and Contracting Opportunities Commitment
❑ Copy of all applicable State and Federal permits included in the specifications
Form PS -SUBMITTAL -05/18 Page 4

SECTION Z1 SUBMITTAL SIGNATURE
I, Brad Corcoran, attest that this submittal package for the
(Typed Name)
Eden Wastewater Treatment Residuals Rehabilitation
(Facility and Project Name)
is to the best of my knowledge accurate, complete and consistent with the information supplied in the engineering plans,
specifications, calculations, and ?I other supporting documentation for this project including the Engineering Report/Environmental
Information Document (ER/E proval Letter, Categorical Exclusion (CE), Finding of No Significant Impact (FONSI), or issued
Record of Decision (RO9)�
Signature:
Title:
Date:
0
SECTION 5: SUBMITTAL MAILING ADDRESSES
THE COMPLETED SUBMITTAL CHECKLIST, PLANS AND SPECIFICATIONS, AND SUPPORTING INFORMATION SHALL BE SUBMITTED TO:
DIVISION OF WATER INFRASTRUCTURE
By U.S. Postal Service By Courier/Special Delivery:
1633 MAIL SERVICE CENTER 512 N. SALISBURY STREET, 8TH FLOOR
RALEIGH, NORTH CAROLINA 276994633 RALEIGH, NORTH CAROLINA 27604
TELEPHONE NUMBER: [phone]
Form PS -SUBMITTAL -05/18 Page 5

ATTACHMENT A
INFORMATION REQUIRED FOR WASTEWATER TREATMENT PLANT INFRASTRUCTURE PROJECTS
(New, Expanding, Replacement, and Rehabilitation)
Submit a copy of the Authorization -to -Construct or application, if required for the project.
A. Engineering Plans
® Plan and profile views and associated details of all modified treatment units including piping, valves, and equipment
(pumps, blowers, mixers, diffusers, electrical, etc.)
❑ Are any modifications proposed that impact the hydraulic profile of the treatment facility? ❑ Yes ® 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?
® Yes ❑ 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.
B. Engineering Specifications
® Detailed specifications for all treatment units and processes including piping, valves, equipment (pumps, blowers, mixers,
diffusers, electrical, etc.), and instrumentation.
® Means of ensuring quality and integrity of the finished product including leakage testing requirements for structures and
pipelines, and performance testing requirements for equipment.
C. Construction Sequence Plan
® 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
sequence plan as in the Engineering Plans.
D. Engineering Calculations
® Submit one set of engineering calculations that have been signed, sealed and dated by a North Carolina Licensed
Professional Eneineer.
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 were determined.
❑ Pollutant loading for each treatment unit demonstrating how the design effluent concentrations were determined.
❑ Hydraulic loading for each treatment unit.
❑ Sizing criteria for each treatment unit and associated equipment (blowers, mixers, pumps, etc.)
❑ Total dynamic head (TDH) calculations and system curve analysis for each pump specified.
❑ Buoyancy calculations for all below grade structures.
❑ Supporting documentation that the specified auxiliary power source is capable of powering all essential treatment units.
Form PS -SUBMITTAL -05/18 Page 6

Residuals Management Plan
City of Eden
Mebane Bridge Road WWTP
Biosolids Dewatering Facility
September, 2008
Item Description
(a) An explanation of how the facility will comply with the 40 CFR Part 503
regulations for Class B residuals.
(b) An analysis of existing permitted land application sites under your authority by
direct permit or through contract that demonstrates the ability to properly dispose
of WWTP residuals generated over the next five years. Please provide a copy of
all related biosolids permits.
(c) Documentation of the sludge production for the past 2 years, including both the
average WWTP flows and the annual sludge production (dry tons).
(d) Calculations documenting the proposed design capacity of 1,600 dry tons/year
(e) Documentation on the sizes of the existing sludge lagoons, how they are
operated, and the typical percent solids of sludge being pumped out of them.

Residuals Management Plan, cont'd
Item (a)
The City of Eden Mebane Bridge Road WWTP will comply with 40 CFR Part 503
regulations for Class B residuals with the following testing:
• Nutrient and Metal sampling on a quarterly (4 times/year) basis
Pathogen Reduction testing on a quarterly (4 times/year) basis
o Documentation of 7 separate samples within the monitoring period
with a geometric mean value less than:
■ 2,000,000 cfu/gram, or
■ 2,000,000 mpn/gram
Vector Attraction Reduction testing on a quarterly (4 times/year)
o Documentation of -
0
£■ Less than 15% additional volatile solids reduction during
bench -scale aerobic batch digestion for 30 additional days
at 20° C (68° F), or
At least 38% reduction in volatile solids during sludge
treatment
• Land Application activities will be conducted in accordance with Land
Application permit WQ000305 (see attached copy) issued by NCDENR —
Division of Water Quality. Biosolids will be applied at agronomic rates
and in accordance with the buffer setbacks listed in the permit.
Item (b)
Currently, the City of Eden Land Application permit (WQ0003035) contains 637.5 acres
available for reuse of the biosolids. The following table documents the last 4 years of
land application activities and the acres utilized in each year:
Year
Average WWTP
Flow (m d)
Dry Tons Land
Applied
Acres Utilized
Dry Tons/Ac
2014
3.619
591.47
237.1
2.49
2015
4.432
609.22
188.6
2.23
2016
3.670
645.93
180
3.59
2017
3.481
403.26
115.9
3.48
Average
3.801
562.47
180.4
2.95
Production has been steady over the last 4 years and current year numbers are consistent
with these values; therefore, it is reasonable to assume that the current permitted acreage
is suitable for the next 5 years residuals production.
Item (c)
See above table in "Item (b)"

Residuals Management Plan, cont'd
Item (d)
Following digestion and prior to dewatering, the liquid biosolids will be staged in the
50,000 gallon storage tank located adjacent to the dewatering building. Belt press
processing will be at a rate of 160 to 200 gpm depending on the solids concentration of
the feed to the press. At an expected feed solids of 2.0% to 2.5%, the belt press will
process approximately 1.0 dry ton per hour, or 6 to 7 dry tons per operating day.
Fluctuations in solids production will be managed through increases or decreases in belt
press operating hours.
Production
Production
Event Volume Yearly Volume
dt/da wt/da
dt/week wt/week
Est. 6 events/ ear
6.5 (29.5)
32.5 (147.7)
266.7 dt/event 1600.0 dt/year
1,212 wt/event 7,272.7 wt/year)
Note: wet tons based on 22% dewatered cake solids
The dewatered cake biosolids will be conveyed from the belt press to the adjoining
covered storage pad (80' x 185') for storage prior to loading and transporting to permitted
land application sites. The number of land application events per year will be determined
by the cropping schedules of the participating farmers (planting and/or harvesting dates)
as well as soil and weather conditions.
Item (e)
The WWTP consists of one 2,000,000 gallon lagoon. The lagoon is currently available
for storage. The storage lagoon will not be a routine part of the solids handling process
following the completion of the dewatering project, but will be available for back-up
purposes.

A*4*47
w.. t!
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
Mr. Brad Corcoran, City Manager
City of Eden
P.O. Box 70
Eden, NC 27289-0070
Dear Mr. Corcoran:
Donald R. van der Vaart
Secretary
February 3, 2015
Subject: Issuance of NPDES Permit Renewal
Permit No. NCO025071
City of Eden Mebane Bridge WWTP
Rockingham County
Facility Class 1V
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge 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 change was made to the draft permit sent to you on October 8,2014:
The mercury monitoring requirement added to Section A.(1.) was changed to an annual grab sample
instead of a quarterly composite. The footnote requiring that mercury be tested using EPA Method 1631E
was maintained. With the next permit renewal, mercury results will be evaluated and the need for a
mercury Iimitation or a Mercury Minimization Plan will be assessed.
As identified previously, the renewal permit contains the following significant changes from
your current permit:
• The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to your NPDES
permit. [See Special Condition A.(4.)]
For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit
the following web page: http://portal.ncdenr.org/web/wq/admin/b�/ipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following
web site: http://www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
• Effluent sampling data for Total Copper did not show reasonable potential to violate NC Water
Quality Standards (WQSs). However, since the maximum predicted value was greater than half the
calculated permit limitation, quarterly monitoring will be maintained in the permit.
• Effluent sampling data for Total Zinc did not show reasonable potential to violate NC WQSs. Since
the maximum predicted value was less than half the calculated permit limitation, zinc monitoring was
removed from the permit. Monitoring requirements for pretreatment are not affected.
1617 {fail Service Center, Raleigh, North Carolina 27699-1617
Phone, 919-707-86001 Internet: www.ncdenr.gov
An Equal Opportunity\ Affirmative Action Employer—Made in part by recycled paper

Mr. Brad Corcoran, City Manager, City of Eden
Feb. 3, 2015
Page 2 of 2
• Based on a review of effluent color sampling and the closure of two textile industries, the color
effluent limitation and monitoring requirements have been removed from the permit.
• Upstream and downstream monitoring of fecal coliform and pH have been removed from the permit.
The stream is not impaired for fecal coliform or pH and instream data shows no impact from the
WWTP.
• 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 Scans shall be performed (2015, 2016, and 2017). In addition, at the end of the Special
Condition, 2nd species Toxicity Testing Requirements for municipal permit renewals per Federal
Regulations [40 CFR 122.210)(5)] have been added.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings (6711 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless
such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or any
other Federal, State, or Local governmental permits that may be required.
If you have any questions concerning this permit, please contact Julie Grzyb by email
[e-mail]) or phone at [phone].
Sincerely,
Jay Zimmerman
cting Director, Division of Water Resources
Enclosure: NPDES Permit NCO025071
cc: NPDES Unit
Central Files
Winston-Salem Regional Office / Surface Water Protection Section
e -copy:
EPA Region IV
Susan Meadows, Aquatic Toxicity Branch
Frederick Cunningham, Virginia DEQ

Permit NCO025071
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
City of Eden
is hereby authorized to discharge wastewater from a facility located at the
Mebane Bridge WWTP
204 Mebane Bridge Road (NCSR 1 964)
south of Eden
Rockingham County
to receiving waters designated as the Dan River in the Roanoke River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III and IV hereof.
This permit shall become effective .................. March 1, 2015.
This permit and authorization to discharge shall expire at midnight on April 30, 2018.
Signed this day ........................... February 3, 2015.
Ac.lay Limmerman
ting Director, Division of Water Resources
By Authority of the Environmental Management Commission
Part I, Page 1 of 7

Permit NCO025071
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The City of Eden is hereby authorized to:
Continue to operate the existing 13.5 MGD wastewater treatment facility located at
204 Mebane Bridge Road south of Eden in Rockingham County. The facility includes
the following treatment components:
Parshall flume flow meter
Two mechanical bar screens and grit separator
Two extended aeration basins with a 7 MG volume each
Two 90 ft. diameter secondary clarifiers
Two 130 ft. diameter secondary clarifiers
Two V -notch automatic chlorinators and one V -notch manual chlorinator
Three 74,000 gallon chlorine contact basins
Dechlorination
One aerobic sludge digester
Sludge holding lagoon with polymer addition
Belt filter press, and
2. Discharge from said treatment works at the location specified on the attached map
into the Dan River, classified WS -IV waters in the Roanoke River Basin.
Part I, Page 2 of 7

Permit NCO025071
17_l:i91
A. ('I.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until permit expiration, the
Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location'
Flow
13.5 MGD
Continuous
Recording
Influent or Effluent
BOD, 5 -day (2011C s
30.0 mglL
45.0 mglL
Daily
Composite
Effluent, Influent
Total Suspended Solids (TSS13
30.0 mglL
45.0 mglL
Daily
Composite
Effluent, Influent
NH3 as N April 1 -October 31
14.8 mglL
35.0 m IL
Daily
Composite
Effluent
NH3 as N (November 1 -March 31)
TWeek
Composite
Effluent
pH 4
Daily
Grab
Effluent
Fecal Coliform
eometric mean
200 1100 ml
400 1100 ml
Daily
Grab
Effluent
Total Residual Chlorine (TRC) 5
28 µglL
Daily
Grab
Effluent
Temperature, °C
Daily
Grab
Effluent
Temperature, °C
Footnote 2
Grab
Upstream,
Downstream
Conductivity, pmhoslcm
Footnote 2
Grab
Upstream,
Downstream
Dissolved Oxygen (DO), mglL
Daily
Grab
Effluent
Dissolved Oxygen (DO), mg1L
Footnote 2
Grab
Upstream,
Downstream
Mercury, nglL e
Annually
Grab
Effluent
Total Copper, pg/L7
Quarterly
Composite
Effluent
Total Nitrogen (TN)
TN = NO2 - N + NO3- N + TKN, m !L
Monthly
Composite
Effluent
Total Phosphorus (TP), mg1L
Monthly
Composite
Effluent
Chronic Toxicity 6
Quarterly
Composite
Effluent
Effluent Pollutant Scan 9
Monitor and report
Footnote 9
Footnote 9
Effluent
Notes:
1. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A (4).
2. Sample locations: Upstream - Upstream at NCSR 1964; Downstream - Downstream at NCSR 700.
Upstream and downstream samples shall be grab samples. Stream samples shall be collected
three times per week during .lune, July, August and September and once per week during the
remaining months of the year.
3. The monthly average BODS and TSS concentrations shall not exceed 15% of the respective influent
value (86% removal).
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for disinfection.
The Division shall consider all effluent TRC values reported below 50 ugll to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory (including field certified), even if these values fall below 50 ug/l.
6. Low-level mercury analysis using EPA method 1631 E for all effluent sampling is required.
7. Sampling for copper shalt coincide with chronic toxicity monitoring.
8. Chronic Toxicity (Ceriodaphnia) PIF at 5.4%. Toxicity testing shall be performed in the months of
March, June, September and December (see Part A.(2.).
9. The permittee shall perform three Effluent Pollutant Scans during the term of this permit.
See Special Condition A.(3.).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Part 1,Page 3of7

J#`tE� TFS+,
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
�� rW REGION 4
°z ATLANTA FEDERAL CENTER
c 61 FORSYTH STREET
,yr�< PROStiG�\ ATLANTA, GEORGIA 30303-8960
DEC 2 8 2011
CERTIFIED MAIL 7010 1060 0002 1706 5996 r JAM -
RETURN RECEIPT REQUESTED 9 Zfl�Z
8Y
The Honorable John E. Grogan
Mayor, City of Eden
308 East Stadium Drive
Eden, North Carolina 27288
Re: Administrative Order No. CWA-04-2012-4758
National Pollutant Discharge Elimination System Permit No. NCO025071
Eden Mebane Bridge Waste Water Treatment Plant
Dear Mayor Grogan:
Pursuant to Section 309(a) of the Clean Water Act (CWA), 33 U.S.C. § 1319(a), as amended, the
Director, Water Protection Division, United States Environmental Protection Agency, Region 4 has
determined that the above named facility is in violation of Section 301 of the CWA, 33 U.S.C. § 1311.
As a result, the Director has issued the enclosed Administrative Order (AO) pursuant to Sections 308
and 309(a) of the CWA, 33 U.S.C. §§ 1318 and 1319(a).
This AO does not replace, modify or eliminate any other requirement of the CWA or the National
Pollutant Discharge Elimination System (NPDES) permit. Notwithstanding the issuance of this AO, the
EPA retains the right to bring further enforcement action under Sections 309(b) or 309(g) of the CWA,
33 U.S.C. §§ 1319(d) or 1319(g), for the violations cited therein or for any other violation of the CWA.
Violations of the CWA, including requirements contained in a NPDES permit or an AO issued under
Section 309(a) of the CWA, remain subject to a civil penalty of up to $37,500 per day for each violation,
pursuant to Sections 309(d) and 309(g) of the CWA, 33 U.S.C. §§ 1319(d) and 1319(g), as amended be
the Civil Monetary Penalty Inflation Adjustment Rule, 73 Fed. Rea. 75340 (December 11, 2008). Such
violations may also be subject to criminal penalties pursuant to Section 309(c) of the CWA, 33 U.S.C. §
1319(c).
-- - - - -- ---Intemet-Address-(URL) + fittp://www.epa.gov- -
RecycledlRecyclable . Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 30% Postconsumer)

Please contact either Mr. Maurice Horsey, Acting Chief of the Municipal & Industrial Enforcement
Section at [phone], or Mr. David Apanian at [phone], should you have any questions
concerning the requirements contained in the enclosed AO. You may also submit written comments to
the address on this letterhead. Legal inquiries should be directed to Mr. Rolando Bascumbe, Associate
Regional Counsel, at [phone].
,,Sincerely, �
�Y
Denisse D. Diaz, Chief
Clean Water Enforcement Branch
Water Protection Division
Enclosure
cc: Ms. Coleen Sullins, Director
Water Quality Division
North Carolina Department of Environmental and Natural Resources

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION 4
IN THE MATTER OF:
THE CITY OF EDEN,
NORTH CAROLINA
PROCEEDING UNDER SECTION
309(a) OF THE CLEAN WATER ACT
33 U.S.C. § 1319(a)
NPDES PERMIT NO. NCO025071
} ADMINISTRATIVE ORDER
DOCKET NO. CWA-04-2012-4758
ADMINISTRATIVE ORDER
I. STATUTORY AUTHORITY
1. Section 309(a) of the Clean Water Act (CWA), 33 U.S.C. § 1319(a), provides that,
whenever the U.S. Environmental Protection Agency, Region 4 finds that any person is in violation of
any condition or limitation which implements, inter alga, Section 301(a) and 402 of the CWA, 33 U.S.C.
§§ 1311(a) and 1342, the EPA may issue an order requiring such person to comply with such condition
or limitation, and shall specify a time for compliance that EPA determines to be reasonable.
2. The following Findings are made and Order issued pursuant to the authority vested in the
EPA by Section 309(a) of the CWA, 33 U.S.C. § 1319(a), as amended. This authority has been
delegated to the Regional Administrator of the EPA, Region 4, and further delegated by the Regional
Administrator to the Director of the Water Protection Division, EPA, Region 4.
II. FINDINGS
3. To accomplish the objective of the CWA, as defined in Section 101(a) of the CWA, 33
U.S.C. § 1251(a), to restore and maintain the chemical, physical and biological integrity of the nation's
waters, Section 301(a) of the CWA, 33 U.S.C. § 131 ] (a), prohibits the point source discharge of
pollutants by any person into navigable waters of the United States except as in compliance with a
National Pollutant Discharge Elimination System (NPDES) permit issued pursuant to Section 402 of the
CWA, 33 U.S.C. § 1342.
4. Section 402 of the CWA, 33 U.S.C. § 1342, establishes the NPDES pen -nit program
authorizing the EPA or authorized states to administer the NPDES permit program, including the
issuance of NPDES permits allowing for the discharge of pollutants into navigable waters subject to
specific terms and conditions. The EPA has granted the State of North Carolina, through the
Department of Environment and Natural Resources (NCDENR), authorization to issue NPDES permits
pursuant to Section 402(b) of the CWA.
5. The City of Eden (the City) is a "municipality" existing under the laws of the State of
North Carolina and, therefore, is a "person" within the meaning of Section 502(4) and (5) of the CWA,
33 U.S.C. § 1362(4) and (5).

6. At all times relevant to this action, the City owns and operates a Publically Owned
Treatment Works (POTW), including an associated Wastewater Collection and Transmission Systems
(WCTS), and the Eden -Mebane Bridge Wastewater Treatment Plant (WWTP) located at 191 Mebane
Bridge Road, Eden, North Carolina and operating under NPDES permit Number NCO025071. This
POTW discharges "pollutants" as a "point source" into the Dan River, a navigable water, as defined in
Section 502(7) of the CWA, 33 U.S.C. § 1362(7).
7. NCDENR issued NPDES Permit No. NCO025071 (the Permit), to the City for the
Mebane Bridge WWTP with the effective date of April 20, 2010 and the expiration date of
April 30, 2012 respectively.
8. The Permit includes a requirement, Part I.2., to properly operate and maintain the POTW,
including the WCTS which collects and/or transmits wastewater to the Mebane Bridge WWTP. The
WWTP and its associated WCTS make up the POTW.
9. On November 26, 2008, the EPA sent an information request letter to the City pursuant to
Section 308(a) of the CWA, 33 U.S.C. § 1318(a). This information request letter required the City to
respond and give the EPA information regarding details on all Sanitary Sewer Overflows (SSOs), as
defined in Attachment A, that have occurred from the City's WCTS over the past five (5) years
including the volume and cause of each SSO. Additional SSO data beyond the scope of the information
request was received from NCDENR.
10. The response to the information request submitted to the EPA by the City indicates that
the City experienced over 150 total SSOs between June 2006 and June 2011. Over fifty percent (50%) of
the City's SSOs were caused by Inflow and Infiltration (1/ I) and the City identified the pump station as
the probable corrective action due to the flow exceeding the pumping capacity. See Attachment B for a
list of these SSOs.
11. The City submitted the NCDENR Division of Water Quality Collection System Sanitary
Sewer Overflow Reporting Form and an SSO reporting protocol as documentation of procedures in place
to record SSOs. The protocol used does not address SSOs that back up into buildings.
12. On March 1, 2007, NCDENR issued the City a Special Order by Consent for frequent and
repetitive SSO's occurring at Meadow Greens, Covenant Branch, and Long Street pump stations in
violation of Part I.2. of the Permit. The City has taken corrective action to address I/I but continues to
experience I/I in the same portions of the WCTS where corrective action has been completed under the
NCDENR Order. On October 6, 2009, NCDENR concluded that the City met the terms and corrective
actions of the Order and, therefore, terminated the Order.
13. On August 4, 2011, the EPA held a show cause meeting with representatives from the City
and NCDENR to discuss the City's SSOs over the past five (5) years.
14. Based on the above, the City has violated Section 301(a) of the CWA, 33 U.S.C. §
1311(a), in that the City has discharged untreated wastewater containing pollutants to the navigable
waters at locations not authorized by an NPDES permit.
15. Based on the above, the City has violated Part I.2. of the Permit, issued pursuant to Section
402 of the CWA, 33 U.S.C. §1342, by failing to properly manage, operate and maintain its WCTS resulting
in SSOs from the WCTS.

III. ORDER
16. Based on the foregoing FINDINGS and pursuant to the authority of Section 309(a) of the
CWA, 33 U.S.C. § 1319(a), IT IS HEREBY ORDERED that the City comply with the following
requirements:
17. Management, Operation and Maintenance (MOM) Programs
The City shall develop the MOM Programs in accordance with the provisions of Sub -paragraphs 17.A
through 17.1) below. The goal of the MOM Programs shall be to eliminate all SSOs. For purposes of
this Order, a SSO is defined as an overflow, spill, release, or diversion of wastewater from the City's
WCTS. SSOs include overflows or releases of wastewater that reach navigable waters; overflows or
releases of wastewater that do not reach navigable waters; and wastewater backups into buildings that
are caused by blockages or flow conditions in a sanitary sewer other than a building lateral. Wastewater
backups into buildings caused by a blockage or other malfunction of a building lateral that is privately
owned is not a SSO. All MOM Programs shall be developed in accordance with the EPA Region 4
guidance as set forth in the attached CDROM disk. Terms used in this Order that are defined in the
CWA or in regulations promulgated pursuant to the CWA shall have the meanings assigned to them in
the CWA, 33 U.S.C. §§ 1251 et seq., and regulations promulgated under the CWA, unless otherwise
provided in Attachment A to this Order.
A. Svstem Evaluation and Rehabilitation Plans (SERP): The City shall develop a
System Evaluation and Rehabilitation Plan (SERP) to evaluate and rehabilitate a portion of the City's
WCTS, specifically Bridge Street, Meadow Greens and Covenant Branch basins and herein defined as
the "Critical Basins" and to identify deficiencies within the these Critical Basins that contribute to
SSOs and excessive I/I, as defined in Paragraph 10 above. The SERF shall include a plan of action to
correct those deficiencies. The SERF will consist of a Capacity Assessment Plan, a Sewer System
Evaluation Survey (SSSS) and a Collection System Remediation Plan. In developing the SERP, the
City shall refer to published guidance documents, including but not limited to, Sewer System
Infrastructure Analysis and Rehabilitation handbook, EPA/625/6-911030, October 1991; Computer
Tools for Sanitary Sewer System Capacity Analysis and Planning, EPA/600/R-07/111, October 2007;
Existing Sewer Evaluation and Rehabilitation, WEF MOP FD -6,1994; the National Association of
Sewer Service Companies (NASSCO) Manual of Practice; the NCDENR's Minimum Design Criteria
for the Permitting of Gravity Sewers, February 1996; and the NCDENR's Minimum Design Criteria for
the Permitting of Pump Stations and Force Mains, June 2000.
(i). Capacity Assessment Plan
a. Within six (6) months of the effective date of this Order, the City
shall submit a Capacity Assessment Plan for the EPA's review, comment and approval
that will describe how the City will undertake a Capacity Assessment that shall include
an engineering study to comprehensively evaluate the design hydraulic capacity and
actual dry weather and wet weather flow conditions of the Critical Basins. The Capacity
Assessment Plan shall provide details on the methodology to be used (e.g.,
Manning/Chezy) and whether that methodology will be carried out using manual
computations or computerized modeling. If computerized modeling is to be used for
some or all of these analyses, a description of the software package(s) to be used shall be
included in the Capacity Assessment Plan. In either case, both the overall approach

proposed and the specific analyses to be applied to the Critical Basins shall be described
in detail.
b. The Capacity Assessment Plan shall propose rainfall monitoring and
in -stream flow metering to measure actual flow in the Critical Basins. The flow and
rainfall monitoring network shall be designed, installed, operated and maintained to
provide representative data of sufficient quality for use in the development of the
Capacity Assessment Plan. Monitoring site selection, equipment selection and
installation, calibration, maintenance, and data quality assurance checks shall all be
carried out to optimize monitoring accuracy, and shall conform to the equipment
manufacturers' recommendations and current, sound engineering practices. The flow
monitoring and rainfall data shall be used to prioritize additional flow monitoring and
physical investigation activities.
c. The Capacity Assessment Plan shall include plans to evaluate pump
station capacity as part of the system hydraulic analysis and identify any pump station
deficiencies that cause or contribute to SSOs. Pump stations that shall be evaluated
include: Dan River, Covenant Branch, Meadow Greens, Railroad, Industrial, Kuder
Street, Bridge Street, Bear Slide and Junction.
d. The Capacity Assessment Plan shall include plans to evaluate worst-
case (high flow/high groundwater) conditions, and all expected upstream and
downstream influences, including hydraulic capacity and III, on each reach of a sewer
affecting Critical Basins. For the purpose of this Order, Critical Basins, mini-basin(s) and
basin(s) are defined in Attachment A.
e. Within 30 days of submitting the CAP, the City shall provide the EPA
with information that substantiates its selection of the basins it considers critical. The
information can include flow studies, rainfall data analysis, models and other information
need to demonstrate that the completed and scheduled remediation efforts in the WCTS
and Critical Basins respectively are designed to eliminate the SSOs experienced in the
WCTS.
(ii). Capacity Assessment Report
a. Within fifteen (15) months after approval of the Capacity
Assessment Plan, the City shall complete the Capacity Assessment and submit a
Capacity Assessment Report.
b. The Capacity Assessment Report shall provide summary information
on how the various collection system components were modeled and describe all
simplifying assumptions that were used in the modeling effort. The hydraulic analysis
results shall include a diagram of the hydraulic grade lines and surcharge conditions for
each Critical Basin, an explanation of limiting factors (i.e., why the pipe surcharges at a
given flow), and an analysis of pump station capacity affecting each segment analyzed.
c. The Capacity Assessment Report shall include a map or maps of
usable scale of the WCTS, including the tributary pipes, that clearly displays the location
of all known SSOs reported in the past five (5) years. The map(s) shall clearly identify
— — - -- - -- 4–--

each basin and mini -basins defined by the City and identify Critical Basins and
associated mini -basins. The map(s) may be divided into subsections and multiple pages
for clarity.
d. The Capacity Assessment Report shall include an estimated number
of sewage customers (per capita) for each Critical Basin and mini -basin. Estimations
shall be made using all applicable categories of the "Discharge Facilities" and "Design
Units" categories of the North Carolina Administrative Code Title 15A NCAC 2T.01 14.
The number of design units per discharge facility must be justifiable and based on sound
engineering judgment. The Capacity Assessment Report shall also provide the volume of
sewage transmitted and treated from all Significant Industrial Users.
e. The Capacity Assessment Report shall provide results of the
hydraulic and excessive III analyses of all Critical Basins and associated mini -basins in
the WCTS, including per capita usage calculations for each critical mini -basin.
f. The Capacity Assessment Report shall include a collection and
transmission system model to assist in the development and implementation of operation
and maintenance procedures to optimize transmission capacity within the WCTS and to
evaluate the impact of III rehabilitation projects, proposed modifications, upgrades, and
expansions on the transmission capacity.
g. The Capacity Assessment Report shall include a calculation of the
amount of increased flow that will be transmitted to the WWTP as a result of eliminating
SSOs in the WCTS, and assess the impact of increased flow to the WWTP.
(iii). Sewer System Evaluation Survey
a. Within six (6) months of the effective date of this Order, the City
shall submit a Sewer System Evaluation Survey Work Plan for the EPA's review,
comment and approval. This Sewer System Evaluation Survey Work Plan will describe
how the City will undertake a Sewer System Evaluation Survey (SSSS) that will result in
the systematic examination of those Critical Basins and associated mini -basins to
determine specific locations, estimated flow rates, methods of rehabilitation, and cost of
rehabilitation versus the cost of transportation and treatment for each defined source of
excessive I/L The SSES Work Plan shall include plans to identify and quantify SSOs;
identify and quantify sources of excessive I/I rates within the Critical Basins; identify
sections of the Critical Basin with excessive I/I rates that cause and/or contribute to
SSOs; identify cross connections and unauthorized connections; and identification of
physical degradation of the WCTS, including general pipe condition and condition of
force mains, that causes or contributes to SSOs. Upon the EPA -approval of the SSES
Work Plan, the City shall implement the Work Plan in accordance with the schedules
therein.
b. The SSES Work Plan may propose to incorporate appropriate and
accurate existing attribute data, and as necessary, the collection and use of additional
physical attribute data; verified existing rainfall and flow data, and as necessary, the
collection and use of additional flow and rainfall data; monitoring of WWTP flows and
flows at key locations within the WCTS; monitoring of groundwater and rainfall at
5

appropriate locations throughout the WCTS; physical investigation of the causes of
excessive III and SSOs; and documentation of the condition of the portions of the WCTS
causing or contributing to SSOs. The SSES Work Plan shall include the planned
locations, types and rationale for placement of rain gauges, flow monitors, and any other
equipment, and a discussion of how Doppler radar will be employed (if appropriate). The
SSES Work Plan may also propose to utilize existing monitoring and characterization
data only to the extent that the data are of adequate quality and for locations appropriate
for the purposes of the SSES. The SSES Work Plan shall identify all existing data to be
utilized; identify all additional data to be collected; and describe in detail how the
existing and proposed additional data will satisfy the objectives of the SSES.
c. The SSES shall include, and the SSES Work Plan shall also establish
plans to include, the following:
1) A review of existing data to be used for SSOs, sewage flows,
WWTP and WCTS attributes (e.g., pipe diameters, pipe segment lengths, diversion
structure characteristics, catchment characteristics, invert elevations, pipe interior
roughness coefficients, etc.), rainfall, and groundwater levels; and an evaluation of the
accuracy, completeness and adequacy of such existing data for purposes of supporting the
characterization of the WCTS and sources of extraneous wet weather flow. The data
review shall further identify all additional data needed to allow the SSES to satisfy the
objectives stated herein.
2) Dry weather monitoring so as to allow the characterization of
base flows and excessive III rates. Wet weather monitoring following events of sufficient
duration and intensity to cause significant excessive I/I in the system, to allow the
prioritization of mini -basin, and to support the development of the Capacity Assessment.
3) A network of rain gauge stations placed in accordance with
industry standards and sound engineering practice.
4) Flow data collected using permanent and/or temporary flow
monitors placed at locations in the WCTS necessary to allow the characterization of flow
from each Critical Basin. The City shall inspect, maintain, and calibrate (if necessary) all
flow monitors at least once per week.
d. The SSES Work Plan shall contain requirements to perform
investigative activities in the locations determined to have excessive I/I, any Critical
Basin and mini -basins, and any portions of the WCTS that cause or contribute to SSOs.
The investigative activities shall be designed to locate and allow estimation of the wet
weather flows associated with individual sources of excessive UI, or shall identify
physical degradation of the WCTS that causes or contributes to SSOs. The investigative
activities shall include, but not be limited to, additional flow monitoring to isolate sources
of excessive I/I; smoke testing; visual inspections of pipes and manholes; dye testing;
night flow isolation; CCTV inspection to identify sewers in need of repair, rehabilitation,
or replacement; and building inspections. The further investigative activities shall be
sufficient to allow detailed characterizations of all significant sewer defects in Critical
Basins and mini -basins with excessive 1/1 and SSOs and to support the development of
capital improvement schedules.

e. The SSES Work Plan shall include expeditious schedules for
performing and completing the SSES, including timelines for installation of sewer flow
and rainfall monitoring equipment; completion of all monitoring activities, and for
submitting the SSES Results. The SSES shall be completed no later than twelve (12)
months after the EPA -approval of the SSES Work Plan. The SSES Results shall be
submitted within two (2) months after completion of the Survey.
(iv). WCTS Remediation Plan
a. Within two (2) months after submission of the Capacity
Assessment Report, the City shall develop and submit for the EPA review,
comment and approval, a WCTS Remediation Plan with specific measures and
schedules that, when implemented, will result in the elimination of all SSOs under
current and future conditions.
b. The WCTS Remediation Plan shall identify all measures necessary to
achieve adequate capacity. Adequate capacity is that capacity needed to collect, transmit
and treat anticipated peak wet weather flows, without causing SSOs. At a minimum,
peak wet weather flows shall include the conditions considered as part of the Capacity
Assessment. If insufficient capacity to accommodate projected peak wet weather flows
exists in any portion of the system, the City shall identify and propose measures to
provide adequate capacity to eliminate SSOs.
c. The WCTS Remediation Plan shall identify all measures necessary to
eliminate all SSOs caused by physical degradation of sewers, inadequate system capacity,
including pump station capacities, or poor pump station reliability.
d. The WCTS Remediation Plan shall identify the degree to which
sources of excessive III shall be removed, and the degree to which excessive I/I removal
is expected to alleviate capacity constraints, and propose specific remedial measures that
will address those capacity limitations not expected to be addressed by excessive I/I
removal. Anticipated excessive III removal rates used in the development of the WCTS
Remediation Plan shall reflect current industry practice and local experience. Specific
remedial measures to address capacity limitations may also include increases in pump
.station and sewer capacity in the WCTS, construction of storage or equalization basin
facilities, or increases in wastewater treatment capacity.
e. The WCTS Remediation Plan shall prioritize the remedial measures
based upon: (1) relative likely human health and environmental impact risks; (2) SSO
frequencies of overflows; and (3) total annual SSO volumes. The WCTS Remediation
Plan shall provide a description of the methodology used in the prioritization.
f. The WCTS Remediation Plan shall provide basic project descriptions,
estimated capital costs and a schedule for design, construction, and placement in service
of all proposed measures that is as expeditious as possible, but in no event later than two
(2) years after submission of the WCTS Remediation Plan (the Remediation Date). In
addition, the WCTS Remediation Plan shall identify estimated begin/complete design,
permitting, award contract, begin/complete construction dates for each measure proposed.
In the event that major sewer interceptor replacement (or other major capital
7

improvement) is identified as a result of the Capacity Assessment and/or SSSS, the City
may request, in writing and with supporting documentation, for an extension beyond the
Remediation Date. Approval of any extension beyond the Remediation Date shall be at
the EPA's discretion and in writing.
B. Pump Station Operations Program: Within 90 days of the Effective Date of this
Administrative Order, the City shall develop and submit for the EPA's review, comment and approval a
Pump Station Operations Program (PSOP). The PSOP shall include a schedule providing for full
implementation within three (3) months of the EPA program approval.
(i). Scheduled Pump Station Operations Program
The City shall have in place a scheduled pump station operations program that will address pump
station operations at all pump stations that are conducted on a routine, scheduled basis. The
program will define the standard pump station operating procedures to be followed at each pump
station such as reading and recording information from the elapsed time meters, recording
information from the pump start counters, observing wet well conditions and grease
accumulation, checking and re -setting, as necessary to improve system performance, wet well set
points, checking and recording system pressure, checking Supervisory Control and Data
Acquisition (SCADA) components, checking alarms and stand-by power and identifying
maintenance needs. The program will establish program elements such as schedules, routes,
priorities, standard forms and reporting procedures and performance measures.
(ii). Emergency Pu= Station Operating Program
The City shall have in place an emergency pump station operations program that will address
pump station operations at all pump stations that are to be conducted as a result of equipment
(mechanical) failure or loss of electrical power. The program will define the emergency pump
station operating procedures to be followed at each pump station such as calling for emergency
maintenance, initiating stand-by power by bringing in portable generators or initiating portable
pump operations for pump around. The program will establish standard forms and reporting
procedures and performance measures.
C. Pump Station Preventive Maintenance Program: Within nine (9) months of the
Effective Date of this Administrative Order, the City shall develop and submit for the EPA's review,
comment and approval a Pump Station Preventive Maintenance Program (PSPMP). The PSPMP shall
include a schedule providing for full implementation within twelve (12) months of the EPA program
approval.
(i). Short -Term Pump Station Repair Program
Within twelve (12) months of the Effective Date of this Order, the City shall certify to the EPA
that all pump stations are in working order and in a state of good repair. If the City cannot make
such certification, then the City shall provide a remedial action plan for each Pump Station not
meeting the certification requirement and provide a schedule of implementation for such
remedial actions.
a. Electrical Maintenance Proeram
The City shall have in place an electrical maintenance component of the preventive
maintenance program for pump stations that will include provisions for all pump stations.
The program will address elements such as the number of crews and personnel required,

standard electrical maintenance procedures, scheduling, standard forms, maintenance of
records, performance measures and an information management system.
b. Mechanical Maintenance Program_
The City shall have in place a mechanical maintenance component of the preventive
maintenance program for pump stations that will include all pump stations. The program
will address elements such as the number of crews and personnel required, standard
mechanical maintenance procedures, scheduling, standard forms, maintenance of records,
performance measures and an information management system.
c. Physical Maintenance Program
The City shall have in place a physical maintenance component of the preventive
maintenance program for pump stations that will include provisions for all pump stations.
The program will address elements such as the number of crews and personnel required,
standard physical maintenance procedures, scheduling, standard forms, maintenance of
records, performance measures and an information management system.
D. SORP: The City has been implementing a SORP for its WCTS. Notwithstanding
any improvements already achieved through the SORP, the City shall revise its SORP to include
tracking of building backups. Within 90 days after the effective date of this Administrative
Order, the City shall submit to the EPA, for review, comment and approval a revised SORP. The
SORP shall be submitted to the EPA for review, comment and approval and to ensure
consistency with the requirements set forth below.
(i). Response. The SORP shall provide procedures for responding to SSOs to
minimize the environmental impact and potential human health risk of SSOs. At a
minimum, the SORP shall include, and the City shall implement, the following:
a. For Building Backups, the SORP shall include a detailed plan
describing the standard operating procedures to be followed by the
City personnel in responding, including:
1) A description of methods for communicating with
customers about how to report Building Backups and how
to obtain clean-up;
2) A description of the City's response to Building Backups,
including:
i. The measures taken to cleanup Building Backups
found to be caused by conditions in the City's Sewer
System. Such measure shall include procedures
necessary to disinfect and/or remove items potentially
contaminated by Building Backups, and shall include
wet vacuuming or other removal of spillage, wiping
floors and walls with cleaning solution and
disinfectant, flushing out and disinfecting plumbing
fixtures, carpet cleaning and/or replacement and other
appropriate measures to disinfect and/or remove items
potentially contaminated by Building Backups; and
9 - - — -- --

ii. The measures taken to correct or repair conditions in
the Sewer System causing or contributing to Building
Backups; and
3) A description of the City's follow-up process to ensure
adequacy of cleanup.
(ii). Training. The SORP shall require, and the City shall provide, adequate
training necessary for the City's employees, contractors, and personnel of other affected
agencies to effectively implement the SORP. The SORP shall provide training guidelines
to ensure adequate response training is provided to management and field personnel
responsible for responding to SSOs. The City shall establish procedures and provide
adequate training to response personnel for estimating volumes from SSOs.
(iii). Listing SSOs. The City shall identify and include in the SORP a list of
those SSO locations within each basin that has been recorded as overflowing more than
once in a twelve (12) month period and those locations at which a SSO is likely to occur
first in the event of Pump Station failure for each Pump Station. The City shall establish
routine inspection routes to be performed after each rain event. The inspection routes
shall include all SSOs identified as occurring more than once in a twelve (12) month
period and those Pump Stations that are not monitored at a central location via telemetry,
SCADA, or other remote monitoring device. The City shall include procedures in which
SSOs may be removed from the list.
(iv). The SORP shall be implemented within three (3) months of the EPA's
approval.
IV. DOCUMENTATION AND REPORT SUBMITTAL
18. All reports, notifications, documentation, and submittals required by this Order shall be
signed by a duly authorized representative of the City as specified by 40 C.F.R. §§ 122.22(b)(2) and (d)
and shall include the following statement:
" I certify under the 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 fine and
imprisonment for knowing violations.''
19. All reports, notifications, documentation, and submittals required by this Order shall be
sent by certified mail or its equivalent to the following addresses:
10

Ddnisse D. Diaz, Chief
Clean Water Enforcement Branch
Water Protection Division
ATTN: Mr. David Apanian, P.E.
U.S. Environmental Protection Agency, Region 4
61 Forsyth Street, S.W.
Atlanta, Georgia 30303-8960
and
Coleen Sullins, Director
Division of Water Quality
North Carolina Department of Environment and Natural Resources
1601 Mail Service Center
Raleigh, North Carolina 27699
20. Notifications to, or communications with, the EPA and NCDENR by the City shall be
deemed submitted on the date they are postmarked and sent by certified mail or its equivalent.
Notifications to, or communications with, the City by the EPA shall be deemed received three (3) days
after the date they are postmarked and sent by certified mail or its equivalent.
21. When circumstances are occurring, or have occurred, which may delay the completion of
any requirement of this Order, whether or not arising from causes beyond the control of the City,
including, but not limited to its consultants and contractors, despite the City's best efforts to fulfill the
requirement, the City shall so notify the EPA, in writing, within fifteen (15) days after the City learns, or
in the exercise of reasonable diligence under the circumstances should have learned, of the delay or
anticipated delay. The notice shall describe in detail the basis for the City's contention that it
experienced a delay, the anticipated length of the delay, the precise cause or causes of the delay, the
measures taken or to be taken to prevent or minimize the delay, and the timetable by which those
measures will be implemented. Failure to so notify the EPA shall constitute a waiver by the City of any
claim for delay under this paragraph as to the event in question. If the EPA finds that a delay in
performance is or was from causes beyond the control of the City, the EPA may extend the time for
performance, in writing, for a period to compensate for the delay resulting from such causes.
V. FINAL REPORT AND TERMINATION OF THIS ORDER
22. Within 60 days after the City has satisfied the terms of this Order by establishing and
successfully implementing for a period of twenty-four (24) months all the MOM Programs and other
requirements in this Order as set forth in paragraph 16, the City shall submit for the EPA review and
approval a final report (Final Report) that includes: (a) a description of all of the actions which have
been taken toward achieving compliance with this Order; (b) an assessment of the effectiveness of such
actions in eliminating SSOs; and (c) an analysis of whether additional actions beyond the scope of this
Order are necessary to further eliminate SSOs. If the EPA determines, after review of the Final Report,
that all the programs and other requirements of this Order have been established and successfully been
in place for a period of twenty-four (24) months in accordance with this Order, the EPA will provide
notice to the City and this Order shall be deemed terminated. If the EPA determines that any program or
other requirement has not been established or successfully been in place for a period of twenty-four (24)
months in accordance with this Order, the EPA will notify the City, provide a list of the deficiencies,

and may require the City to modify the programs as appropriate in order to correct such deficiencies. If
so required, the City shall implement the modified and approved programs and shall submit a modified
Final Report in accordance with the EPA notice. Failure by the City to implement the approved
modified programs shall be a violation of this Order.
VI. GENERAL PROVISIONS
23. The City's compliance with this Order does not necessarily constitute compliance with
the provisions of the CWA, 33 U.S.C. § 1251 et seg., or with the City's NPDES permit. The City shall
remain solely responsible for compliance with the terms of the CWA and this Order and its NPDES
permit.
24. Failure to comply with the requirements herein shall constitute a violation of this Order
and the CWA, and may subject the City to penalties as provided in Section 309(d) of the CWA, 33
U.S.C. § 1319(d).
25. This Order shall not relieve the City of its obligation to comply with all applicable
provisions of federal, state or local law, nor shall it be construed to be a ruling on, or determination of,
any issue related to any other federal, state or local permit. Compliance with this Order shall not be a
defense to any actions subsequently commenced pursuant to federal laws and regulations administered
by the EPA.
26. Nothing in this Order shall be construed as prohibiting, altering, or in any way limiting
the ability of the United States to seek any other remedies or sanctions available by virtue of the City's
violation of this Order or of the statutes and regulations upon which this Order is based, or for the City's
violation of any other federal or state statute, regulation or permit.
27. Nothing in this Order is intended to nor shall be construed to operate in any way to
resolve any criminal liability of the City, or other liability resulting from violations that were not alleged
in this Order. The United States does not waive any right to bring an enforcement action against the
City for violation of any federal or state statute, regulation or permit, to initiate an action for imminent
and substantial endangerment, or to pursue criminal enforcement.
28. This Order applies to and is binding upon the City and its officers, directors, employees,
agents, successors and assigns.
29. Any change in the legal status of the City, including but not limited to any transfer of
assets of real or personal property, shall not alter the City's responsibilities under this Order.
30. Pursuant to Section 309(a)(4) of the CWA, 33 U.S.C. § 1319(a)(4), the EPA has sent a
copy of this Order to the State of North Carolina.

VI. EFFECTIVE DATE
31. The effective date of this Order shall be the date upon which it is received by the City.
IT IS SO ORDERED,
BY THE U.S. ENVIRONMENTAL PROTECTION AGENCY, REGION 4:
James D. Giattina
Director
Water Protection Division
13
Date: l i

Attachment A
Definitions
Basin: Means the subdivisions of the City's WCTS containing sewers that are primarily hydraulically
linked as identified on Attachment C attached hereto and incorporated herein.
Bypass: Means the intentional diversion of waste streams from any portion of a treatment facility (see
40 CFR 122.41(m)(1)(i)).
Capacity Related Overflow: Means an overflow that occurs when a system is not able to convey all the
wastewater to the treatment plant because of insufficient grade, pipe size, wet well size, pump capacity
or force main size or because of a design flaw and the overflow cannot be corrected through proper
operation and maintenance.
Chronic Overflows: Means repeated overflows at the same location in the system, repeated overflows
from the system for the same root cause, or both.
Combined Sewer: A sewer that is designed as a sanitary sewer and a storm sewer (see 40 CFR
35.2005(b)(11)).
Critical Basins: Means Bridge Street, Meadow Greens and Covent Branch; basins in the WCTS that
have experienced repetitive SSOs in the past five (5) years and are upstream of areas experiencing
SSOs.
Critical Part: Means any part of the utility's collection, transmission or treatment system for which the
time required to acquire a replacement part would result in, or extend, a permit violation or a sanitary
sewer overflow, including an un -permitted discharge. The replacement for a critical part is called a
critical spare part.
Egregious Overflows: Means continuing chronic overflows or those large overflows having a root
cause that utility's specific MOM program is not followed or when the utility's specific standard
operating procedure or standard maintenance procedure is not followed.
Frequent Overflows: Means those overflows that, in the judgment of the regulatory authority based on
system size and complexity, require a high level of improvement in a utility's management, operation
and maintenance programs.
Infiltration: Means water other than wastewater that enters a sewer system (including sewer service
connections and foundation drains) from the ground through such means as defective pipes, pipe joints,
connections, or manholes. (see 40 CFR 35.2005(b)(20)).
Inflow : Means water other than wastewater that enters a sewer system (including sewer service
connections) from sources such as, but not limited to, roof leaders, cellar drains, yard drains, area drains,
drains from springs and swampy areas, manhole covers, cross connections between storm sewers and
sanitary sewers, catch basins, cooling towers, storm waters, surface runoff, street wash waters, or
drainage. (see 40 CFR 35.2005(b)(21)).

Infrequent Overflows: Means those overflows that, in the judgment of the regulatory authority based
on system size and complexity, require some level of improvement in a utility's management, operation
and maintenance programs. Usually associated with isolated overflows.
Isolated Overflows: Means those overflows that are not chronic.
Maintenance Related Overflow: Means an overflow that occurs when an adequately designed and sized
system that is well operated is not able to convey all the wastewater to the treatment plant because of
poor maintenance.
Mini basin: Means a particular segment or section within the WCTS described by alpha-numeric
numbers and used as a mapping identification tool to divide the WCTS into smaller manageable
subsystems.
Municipality: Means a city, town, borough, county, parish, district, association or other public body
created by or under State law and having jurisdiction over disposal of sewage, industrial wastes, or other
wastes, or an Indian tube or an authorized Indian tribal organization, or a designated and approved
management agency under Section 1288 of the CWA (33 U.S.C. § 1362 (4) and 40 CFR 122.2).
Operations Related Overflow: Means an overflow that occurs when an adequately designed and sized
system that is well maintained is not able to convey all the wastewater to the treatment plant because of
poor operation.
Rainfall Induced Infiltration (RII): Means the portion of infiltration flows (flows coming from
infiltration sources) that enters the sewerage system during and immediately after rainfall events.
Rainfall induced infiltration does not include inflow.
Regional Collection and/or Treatment System: A collection system or treatment system that accepts
wastewaters from satellite collection systems.
Sanitary Sewer: A conduit intended to carry liquid and water carried wastes from residences,
commercial buildings, industrial plants and institutions together with minor quantities of ground, storm
and surface waters that are not admitted intentionally (see 40 CFR 35.2005(b)(37)).
Sanitary Sewer Overflow: A sanitary sewer overflow is an overflow, spill, release, or diversion of
wastewater from a sanitary sewer system. Sanitary sewer overflows include:
(A) overflows or releases of wastewater that reach Navigable waters;
(B) overflows or releases of wastewater that do not reach Navigable waters; and
(C) wastewater backups into buildings that are caused by blockages or flow conditions in a
sanitary sewer other than a building lateral. Wastewater backups into buildings caused
by a blockage or other malfunction of a building lateral that is privately owned is not a
sanitary sewer overflow.
Satellite Collection System: Means a collection system that is owned and operated by one entity that
discharges to a regional collection and/or treatment system that is owned and operated by a different
entity. Satellite collection systems depend on a separate entity for wastewater treatment and discharge.

SMP: See Standard Maintenance Procedure
SP: See Standard Management Procedure
SOP: See Standard Operating Procedure
Standard Maintenance Procedure (SMP): Means the steps defined by the organization that are to be
followed by trained personnel in order to successfully complete a maintenance activity or task.
Standard Management Procedure (SP): Means the steps defined by the organization that are to be
followed by trained personnel in order to successfully complete a management activity or task.
Standard Operating Procedure (SOP): Means the steps defined by the organization that are to be
followed trained personnel in order to successfully complete an operating activity or task.
Un -Permitted Discharge: Means the discharge of wastewater containing pollutants to the navigable
waters directly or by way of the storm drainage infrastructure that is not authorized by an NPDES
permit.
Wastewater Collection and Transmission System (WCTS): Means the municipal wastewater collection,
retention and transmission system, including all pipes, Force Mains, Gravity Sewer Lines, Pump
Stations, pumps, manholes, and appurtenances thereto, which are owned or operated by the City.

Attachment B
City of Eden Sanitary Sewer Overflows
Date of
Ultimate
•
Location
Destination
Volume of SSO Cause
Corrective Action Taken
Dan River via
13 -Jan -08
BSW292
Matrimony Creek
500 Roots
Cut roots out
Dan River via
Remove debris and jet
14 -Jan -08
BSW294
Matrimony Creek
2,900
Debris
rodded
Broken pipe btwn manholes
22 -Jan -08
KSW171 & KSW204
Smith River
800
Roots broke pipe
Replace pipe
Broken lateral btwn manholes
Dan River via
25 -Jan -08
BSE067 & BSE066
Tan and Branch
200
Lateral broken btwn manholes
Repair lateral
None flow exceeding
1 -Feb -08
Brid a Street Pump Station
Dan River
5,200
1&1 & Rainfall
pumping capacity
Dan River via Dry
1 -Feb -08
DC235
Creek
50
Grease
Jet rodded & cleaned lines
1 -Feb -08
MG85
Dan River
60
Roots
Cut out roots & limed area
Dan River via
8 -Feb -08
BSE106
Tan and Branch
90
Roots
Cut out roots & limed area
Line stopped up btwn
Smith River via
8 -Feb -08
KSW275 & KSW276
Tacky Branch
105
Roots & Grease
Cut out roots and 'et rodded
Line stopped up btwn
Dan River via
22 -Feb -08
BSE577 & BSE576
Matrimony Creek
80
Roots
Cut out roots and 'et rodded
Dan River via
Remove debris and jet
5 -Mar -08
Manhole BSE64
Tan and Branch
27
Debris
rodded
Dan River via
27 -Mar -08
Manhole BSE577
Matrimony Creek
70
Roots
Cut out roots and 'et rodded
Dan River via
et up bypass pumping and
7 -Apr -08
Manhole BSW229
Matrimon Creek
900
Pi a Break
aired broke line
[J;
18 -Apr -08
KSW584
Smith River
90
Grease
t rodded

Date of
Ultimate
•
Location
Destination
Volume of SSO
Cause
Corrective Action •
Meadow Greens Pump
None flow exceeding t
12-Dec-08
Station
Dan River
1,190
1&1 & Heavy Rainfall
pumping capacity
7-Jan-09
928 Harris Street
171
Grease
Jet rodded
None Flow exceeding
7-Jan-09
Brid a Street Pump Station
Dan River
36,850
1&1 & Heavy Rainfall
pumpingca acit
Covenant Branch Pump
None Flow exceeding
7-Jan-09
Station
Dan River
3,284
1&1 & Heavy Rainfall
pumping capacity
None Flow exceeding
7-Jan-09
Medows Green Pump Station
Dan River
3,533
1&1 & Heavy Rainfall
pumping capacity
24-Jan-09
Dillard Ct & Mill Ave
30
Grease
Jet rodded
24-Jan-09
Lawson Street
36
Grease
Jet rodded
27-Jan-09
813 Milner Street
57
Grease
Jet rodded
Patterson Street, Manhole
11-Feb-09
BSE375C
40
Grease & Roots
Cut out roots and 'et rodded
Manhole off Kings Hwy
23-Feb-09
Behind Shell Texico Station
9
Grease
Jet rodded
Manhole off BSE-13 @
8-Mar-09
Greenwood Street
50
Grease
Jet rodded
Covenant Branch Pump
None Flow exceeding
15-Mar-09
Station
Dan River
13,786
1&I
pumping capacity
Meadow Greens Pump
None Flow exceeding
15-Mar-09
Station
Dan River
1,984
1&1
um in ca acit
19-Mar-09
613 Irving Street
125
Grease
Jet rodded
Smith River outfall at end of
Set up bypass pumping and
21-Mar-09
Gordan Street
380
Pipe Break
repaired broke line
31-Mar-09
513 Gloria Street
33
Grease
Jet rodded
Remove debris and jet
16-Apr-09
Haywood Street Outfall
250
Debris
rodded
Manhole between #BSW-
293 & SSW-292 on
Remove debris and jet
30-Apr-09
Martimony Creel
605
Debris
rodded

Date of
Ultimate
•
Location
Destination
Volume of SSO
Cause
CorrectiveAction Taken
16° gravity main just
6 -Ma -09
upstream of manhole MS82
314
Other
RR Pump Station temp
6 -Ma -09
bypass line
850
Other
21 -Ma -09
Railroad Pump Station
138
Other
30 -May -09
241 East Aiken Street
1,100
Roots
Cut out roots
1315 Harris Street- Hampton
12 -Jun -09
Street outfall
66
Roots
Cut out roots
1315 Harris Street- Hampton
12 -Jun -09
Street outfall
50
Roots
Cut out roots
Intersection of High Street &
Set up bypass pumping and
14 -Jul -09
Ridge Ave
1,800
Pipe Break
re aired broke line
Manhole between Kuder
11 -Au -09
Street # KSW 452 & KSW451
28
Grease
Jet rodded
Manhole between KSW591 &
26 -Oct -09
KSW590
30
Grease
Jet rodded
Remove debris and jet
1 -Nov -09
Brid a Street Pump Station
Dan River
653
Debris
rodded
Bridge Street Pump Station
at 3rd Manhole BSE2
None Flow exceeding
11 -Nov -09
upstream
17,476
1&I
numpinA capacity
Covenant Branch Pump
None Flow exceeding
11 -Nov -09
Station
Dan River
26 482
1&1
rn in capacity
Meadow Greens Pump
None Flow exceeding
11 -Nov -09
Station
Dan River
16,437
1&I
pumping capacity
Bridge Street Pump Station
None Flow exceeding
12 -Nov -09
at Manhole BSE 2 & 3
110,603
1&I
pumping capacity
Manhole prior to Covenant
None Flow exceeding
12 -Nov -09
Branch Pump Station
56,278
1&1 Heavy Rainfall
pumping capacity
Manhole prior to Dan River
None Flow exceeding
12 -Nov -09
I Pump Station
32,619
1&1 & Heavy Rainfall
pumping capacity

Date of
Ultimate
•
Location
Destination
Volume of SSO
Cause
Corrective Action Taken
Medows Green Pump Station
None Flow exceeding
12 -Nov -09
Surcharge Tank
82,495
I&I
pumping capacity
None Flow exceeding
12 -Nov -09
New Street Pump Station
6,288
1&1 & Rainfall
pumping capacity
Two Manholes prior to
None Flow exceeding
12 -Nov -09
Junction Pump Station
24,099
1&I
pumping capacity
None Flow exceeding
12 -Nov -09
Village Pump Station
20,152
1&1 & Heavy Rainfall
pumping capacity
Manhole on Rock Creek
19 -Nov -09
outfall line
392
Grease
Jet rodded
25 -Nov -09
Train Tressel at Smith River
20
Other
Front entrance to Morhead
Set up bypass pumping and
9 -Dec -09
Hospital on Kings Hwy
113
Pipe Break
repaired broke line
Manhole at outfall behind 624
9 -Dec -09
Anderson Street
27
Grease
Jet rodded
Cut out roots, jet rodded
Manhole BSE -375c on
and non flow exceeding
9 -Dec -09
Patterson Street
81
Grease, I&I and Roots
pumping capacity i
Manhole off Kings Hwy
None Flow exceeding
9 -Dec -09
Behind Shell Texico Station
2,727
1&I
pumping capacity
Manhole prior to Covenant
None Flow exceeding
9 -Dec -09
Branch Pump Station
4,037
1&I
pumpingca acit
25 -Dec -09
943 Harris
1,063
Grease
Jet rodded
Covenant Branch Pump
None Flow exceeding
25 -Dec -09
Station
Dan River
48,600
1&1 & Heavy Rainfall
pumping capacity
Covenant Branch Pump
None flow exceeding
17 -Jan -10
Station
Dan River
5,800
1&I
pumping capacity
Meadow Greens Pump
None flow exceeding
24 -Jan -10
Station Surcharge Tank
16,560
1&I
pumping capacity
I
None flow exceeding
25 -Jan -10
Bridge Street Pump Station
Dan River
12,422
1&I
pumping capacity

Date of
Ultimate
•
Location
Destination.
of • J,
Cause I CorrectiveAction
Manhole MS2 prior to
None flow exceeding
25 -Jan -10
Covenant Pump Station
5,467
1&I Pumping capacity
None flow exceeding
25 -Jan -10
New Street Pump Station
144
1&1
pumping capacity
Two Manholes prior to
None flow exceeding
25 -Jan -10
Junction Pump Station
11,484
1&I
pumpina capacity
Nona flow exceeding
25 -Jan -10
Village Pump Station
53
1&I
pumpina capacity
None flow exceeding
5 -Feb -10
Junction Pump Station
2.250
1&I
pumping capacity
None flow exceeding
6 -Feb -10
Brid a Street Pump Station
Dan River
320
1&I
pumping capacity
Covenant Branch Pump
None flow exceeding
6 -Feb -10
Station
Dan River
14,500
1&I
DUMD[na ca acct
11 -Feb -10
602 North Rickman Street
0
Roots
Cut out roots and et rodded
Manhole above Covenant
None flow exceeding
28 -Mar -10
Branch Pumpina Station
112,030
1&1 and Heavy Rainfall
pumpina capacity
5 -May -10
613 Seymour Court
200
Roots
Cut out roots and let rodded
2nd Manhole North of
Clarkway Drive & Circle Drive
8 -Jun -10
Intersection
3
Debris
Remove Debris
None flow exceeding
30 -Se -10
Bridge Street Pump Station
Dan River
29,400
1&1 & Heavy Rainfall
DUMDlnc3 ca acct
Covenant Branch Pump
None flow exceeding
30 -Sep -10
Station
Dan River
12,360
1&1 & Heavy Rainfall
DUMDing ca acct
i
Greenway at West Kings
Highway North of 343 West
None flow exceeding
30 -Sep -1 0
Kings
22,200
1&1 & Heavy Rainfall
DUMDina capacity
None flow exceeding
30 -Sep -10
I Hazelip Street
9,7501
1&1 & Rainfall
pumping capacity

Date of
Ultimate
•
Location
Destination
Volume of SSO
Cause
Corrective Action Taken
None flow exceeding
30 -Sep -1 0
Medow Greens Pump Station
Dan River
3,600
1&I & Rainfall
pumping capacity
None flow exceeding
30 -Sep -1 0
New Street Pump Station
84
1&1 & Rainfall
pumping capacity
Riverside Drive at Thomas
None flow exceeding
30 -Sep -10
Street
1,425
1&1 & Ranifall
pumping capacity
Valley Drive at Lynrock
None flow exceeding
30 -Sep -1 0
Terrace Intersection
240
1&1 Rainfall
pumping capacity
Covenant Branch Pump
None flow exceeding
27 -Oct -10
Station
Dan River
4,200
1&I
pumping capacity
Manhole West of 219
29 -Oct -10
Madison Street
490
Debris
Remove Debris
Manhole 1 st east of RR
3 -Dec -10
bridge over the Smith River
320
Grease
Jet Rodded
Manhole 4th South of
j
Meadow Road 3rd Manhole
31 -Dec -10
West Madison
1,870
Roots
Cut out roots and 'et rodded
15 -Jan -11
523 Boone Road
5,180
Debris
20 -Jan -11
500 Moir Street
270
Debris
27 -Jan -11
Behind 206 Peter Hill Road
97
Grease
11 -Apr -11
Behind 601 N. Van Buren Road
11,760
Debris/Vandalism
27 -Apr -11
Outfall off of 1121 Willow Street
1,016
Grease
27 -May -1 1
Bridge Street Pump Station
3,240
Power Outage/ Severe Weather
6 -Jun -11
6th manhole north of 1030
280
Haywood Street outfall
Grease
13 -Jun -11
Manhole on Smith River Outfall
90
(west side of river - first manhole
Debris/Vandalism
23 -Jul -11
Valley Drive@ Junction Pump
2,500
Station
Power Outage/ Severe Weather
27 -Jul -11
In Median Between Roosevelt
125
Street and Highway 14
Debris/Grease

Attachment C
City (or Authority) WCTS map depicting Basins and Critical Basins
is W
',
P
30000
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r,
\ 1.•�1�1 1
E
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3
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.. 1/ _ 1.�'� j•• Iii �l: `�LmF�._
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River �a�, •<<,.• _�
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o
m

United States Office of Enforcement and Compliance Assurance (2201A)
��� Agency Protection EPA 300-F-07-003 October 2007
9ency
U. S. EPA Small Business Resources
f you own a small business, the United States Environmental Protection Agency (EPA) offers
a variety of compliance assistance resources such as workshops, training sessions, hotlines,
websites, and guides to assist you in complying with federal and state environmental laws. These
resources can help you understand your environmental obligations, improve compliance, and find cost-
effective ways to comply through the use of pollution prevention and other innovative technologies.
Compliance Assistance Centers
(www.assistancecenters.net)
In partnership with industry, universities, and other federal
and state agencies, EPA has established Compliance
Assistance Centers that provide information targeted to
industries with many small businesses.
Agriculture
(www.epa.gov/agriculture or 1-888-663-2155)
Automotive Recycling Industry
(www.ecarcenter.org)
Automotive Service and Repair
(www.ccar-greenlink.org or 1 -888 -GRN -LINK)
Chemical Industry
(www. chemalliance.org )
Construction Industry
(www.cicacenter.org or 1-734995-4911)
Education
(www.campuserc.org )
Healthcare Industry
(www.hercenter.org or 1-7349954911)
Metal Finishing
(www.nmfrc.org or 1-734-995-4911)
Paints and Coatings
(www.paintconter.org or 1-734995-4911)
Printed Wiring Board Manufacturing
(www.pwbrc.org or 1-734995-4911)
Printing
(www.pneac.org or 1-888-USPNEAC)
Transportation Industry
(www.transource.org)
Tribal Governments and Indian Country
(www.epa.gov/tdbaYcompliance or 202-5642516)
US Border Environmental Issues
(www.bordercenter.org or 1-734-9954911)
The Centers also provide State Resource Locators
(www.envcap.org/statetooisrindex.cfm) for a wide range of
topics to help you find important environmental compliance
information specific to your state.
EPA Websites
EPA has several Internet sites that provide useful compli-
ance assistance information and materials for small
businesses. If you don't have access to the Internet at
your business, many public libraries provide access to the
Internet at minimal or no cost.
EPA's Home Page
www.epa.gov
Small Business Gateway
www.epa.gov/smallbusiness
Compliance Assistance Home Page
www.epa.gov/compliance/assistance
Office of Enforcement and Compliance Assurance
www.apa.gov/compliance
Voluntary Partnership Programs
,mm-epa.gov/partners
Office of Enforcement and Compliance ssurance: http://www.epzi.gov/compliance
r'
c RecyctedlRscyclable
JJ Printed with SoyiCanola ink on paper that contains at least 30% post consumer Ober

Hotlines, helplines & Clearinghouses
(www.epa.gov/epahome/hotline.htm)
EPA sponsors many free hotlines and clearinghouses that
provide convenient assistance regarding environmental
requirements. A few examples are listed below.
Clean Air Technology Center
(www.epa.govlt dcatc or 1-919.541-0800)
Emergency Planning and Community Right -To -Know Act
(www.epa.gov/superfund/resourcosrinfboenterlopera.htm or
14=424-9346)
EPA's Small Business Ombudsman Hotline provides
regulatory and technical assistance information.
(www.epa.gov/sbo or 1.800-368-5888)
The National Environmental Compliance Assistance
Clearinghouse provides quick access to compliance assis-
tance tools, contacts, and planned activities from the U.S.
EPA, states, and other compliance assistance providers
(www.epa.govidearinghouse)
National Response Center to report oil and hazardous
substance spills.
(www.nrc.uscg.mil or 1-800-424-8802)
Pollution Prevention Information Clearinghouse
(www.epa.gov/oppgntrippic or 1-202-566-0799)
Safe Drinking Water Hotline
(www.epa.gov/sgewater/hadineriindex.html or 1-800-426-4791)
Stratospheric Ozone Refrigerants Information
(www.epa.gov/ozone or 1-800-296-1996)
Toxics Assistance Information Service also incudes asbestos
inquiries.
(1-202-5541404)
Wetlands Helpline
(www.epa.govlowow/Watiands/wedine.html or 1-800-832-7828)
State Agencies
Many state agencies have established compliance assis-
tance programs that provide on-site and other types of
assistance. Contact your local state environmental agency
for more information or the following two resources:
EPA's Small Business Ombudsman
(www.epa.gov/sbo or 1-800-368-5888)
Small Business Environmental Homepage
(www.smalibiz-enviroweb.org or 1-724-452-4722)
Compliance Incentives
EPA provides incentives for environmental compliance. By
participating in compliance assistance programs or
voluntarily disclosing and promptly correcting violations
before an enforcement action has been initiated,
businesses may be eligible for penalty waivers or reductions.
EPA has two policies that potentially apply to small
businesses:
The Small Business Compliance Policy
(www epa.govicomptiance/incentive-Wsmallbusiness)
Audit Policy
(www.epa.gov/compliancarincentivestaudtdng)
Commenting on Federal Enforcement
Actions and Compliance Activities
The Small Business Regulatory Enforcement Faimess Act
(SBREFA) established an SBA Ombudsman and 10 Regional
Fairness Boards W receive comments from small businesses
about federal agency enforcement actions. if you believe that
you fall within the Small Business Administration's definition
of a small business (based on your North American Industry
Classification System (NAICS) designation, number of
employees, or annual receipts, defined at 13 C.F.R. 121.201;
In most cases, this means a business with 500 or fewer
employees), and wish to comment on federal enforcement
and compliance activities, call the SBREFA Ombudsman's
toll-free number at 1 -888 -REG -FAIR (1-88&734-3247).
Every small business that is the subject of an enforcement
or compliance action is entitled to comment on the
Agency's actions without fear of retaliation. EPA
employees are prohibited from using enforcement or any
other means of retaliation against any member of the
regulated community in response to comments made under
SBREFA.
Your Duty to Comply
If you receive compliance assistance or submit comments
to the SBREFA Ombudsman or Regional Fairness Boards,
you still have the duty to comply with the law, including
providing timely responses to EPA information requests,
administrative or civil complaints, other enforcement
actions or communications. The assistance information
and comment processes do not give you any new rights or
defenses in any enforcement action. These processes
also do not affect EPA's obligation to protect public health
or the environment under any of the environmental statutes
it enforces, including the right to take emergency remedial
or emergency response actions when appropriate. Those
decisions will be based on the fads in each situation. The
SBREFA Ombudsman and Fairness Boards do not
participate in resolving EPA's enforcement actions. Also,
remember that to preserve your rights, you need to comply
with all rules governing the enforcement process.
EPA is disseminating this information to you
without making a determination thatyourbusiness
or organization is a small business as defined by
Section 222 of the Small Business Regulatory
Enforcement Fairness Act or related provisions.

VO ricE OF SECT ISI rIF.S AND EKCH.INI;E; COM%ttSSIUV REGIS rwv, I s' lit. rY ro DISCLOSE
EM 1RONMEN rAL 1. ;AL PROCEEDINGS
Securities and Exchange Commission regulations require companies registered with the SEC (e.g..
publicly traded companies) to disclose, on at least a quarterly basis, the existence of certain
Administrative or Judicial proceedings taken against them arising under Federal. State or local provisions
that have the primary purpose of protecting the environment. Instruction 5 to Item 103 of the SEC's
Regulation S -K ( 17 CFR 229.103) requires disclosure of these environmental legal proceedings. For
those SEC registrants that use the SEC's -small business issuer' reporting system, instructions 1-4 to
Item 103 of the SEC's Regulation S -B ( 17 CFR 228.103) requires disclosure of these environmental legal
proceedings.
if you are an SEC registrant, you have a duty to disclose the existence of pending or known to be
contemplated environmental legal proceedings that meet any of the following criteria (17 CFR
229,103(5)(A) -(C)):
A. Such proceeding is material to the business or financial condition of the registrant;
13. Such proceeding involves primarily a claim for damages, or involves potential monetary
unctions, capital expenditures, deferred charges or charges to income and the amount
involved exclusive of interest and costs, exceeds 10 percent of the current assets of the
registrant and its subsidiaries on a consolidated basis; or
C. A governmental authority is a parry to such proceeding and such proceeding involves
potential monetary sanctions, unless the registrant reasonably believes that such
proceeding will result in no monetary sanctions, or in monetary sanctions. exclusive of
interest and costs, of less than $100,000: provided, however, that such proceedings
which are similar in nature may be grouped and described generically.
Specific information regarding the environmental legal proceedings that must be disclosed is set .
forth in Item 103 of Regulation S -K or, for registrants using the "small business issuer" reporting system,
Item 103(a) -(b) of Regulation S -B. If disclosure is required, it must briefly describe the proceeding,
-including the name of the court or agency in which the proceedings are pending, the date instituted, the
principal parties thereto, a description of the factual basis alleged to underlie the proceedings and the
relief sought."
You have been identified as a party to an environmental legal proceeding to which the United States
government is, or was, a party. If you are an SEC registrant, this environmental legal proceeding may
trigger, or may already have triggered, the disclosure obligation under the SEC regulations described
above.
This notice is being provided to inform you of SEC registrants' duty to disclose any relevant
environmental legal proceedings to the SEC. This notice does not create, modify or interpret any existing
legal obligations. it is not intended to be an exhaustive description of the legally applicable requirements
and it is not a substitute for regulations published in the Code of Federal Regulations. This notice has
been issued to you for information purposes only. No determination of the applicability of this reporting
requirement to your company has been made by any governmental entity. You should seek competent
counsel in determining the applicability of these and other SEC requirements to the environmental legal
proceeding at issue, as well as any other proceedings known to be contemplated by governmental
authorities.
If you have any questions about the SEC's environmental disclosure requirements, please contact
the SEC Office of the Special Senior Counsel for Disclosure Operations at ( 202) 942-1888.

[Code Of Federal Regulations)
I Title 17. Volume 2, Parts 200 to 2391
(Revised as of Apnl 1. 19491
From the U.S. Government Printing Office via GPO ,access
JCI TE: 17CFR229.1031
(Page 34,91
TITLE 17 --COMMODITY .SND SECURITIES EXCHANGES
CHAPTER dl—SECIURITIES AND EXCHANGE COMMISSION
PART 229 --STANDARD INSTRUCTIONS FOR FILING FORMS UNDER SECURITIES ACT OF 1933.
SECURITIES EXCHANGE ACT OF 1934 AND ENERGY POLICY AND CONSERVATION ACT OF 1975—
REUVILA'I ION S -K --cable of Contents
Subpart 229.100 --Business
sec. 229.103 ( item 103) Legal proceedings.
Describe briefly any material pending legal proceedings, other than ordinary routine litigation incidental to the
business, to which the registrant or any of its subsidiaries is a party or of which any of their property is the subject.
Include the name of the court or agency in which the proceedings are pending, the date instituted, the principal
is alleged to underlie the proceeding and the relief sought, Include
parties thereto, a description of the factual has
similar information as to any such proceedings knoWn to be contemplated by governmental authorities.
Instructions to Item 103:
1. If the business ordinarily results in actions for negligence or other claims. no such action or claim need be
described unless it departs from the normal kind of such actions.
�. Vo information steed be given with respect to any proceeding that involves primarily a claim for damages if the
amount involved, exclusive of interest and costs, does not exceed l0 percent of die current assets of the registrant
and its subsidiaries on a consolidated basis. However, if any proceeding presents in large degree the same legal and
factual issues as other proceedings pending or known to be contemplated, the amount involved in such other
proceedings shall be included in computing such percentage• receivership, or similar proceeding with ecu to
3. Notwithstanding Instructions 1 and 2, any material bankruptcy, p• P g respect
the registrant or any of its significant subsidiaries shall be described.
4. Any material proceedings to which any director. officer or affiliate of the registrant, any owner of record or
beneficially of more than five percent of any class of voting securities of the registrant, or any associate of any such
director. oiTicer, affiliate of the registrant. or security holder is a party adverse to the registrant or any of its
subsidiaries or his a material interest adverse to the registrant or any of its subsidiaries also shall be described.
5. Notwithstanding the foregoing. an administrative or judicial proceeding (including, for purposes of A and B of
this Instruction, proceedings which present in large degree the same issues) arising under any Federal. State or local
pro,. isions that have been enacted or adopted regulating the discharge of materials into the environment or primary
for the purpose of protecting the environment shall not be deemed "ordinary routine litigation incidental to the
business" and shall be described if:
A. Such proceeding is material to the business or financial condition of the registrant:
B. Such proceeding involves primarily a claim for damages, or involves potential monetary sanctions, capital
expenditures, deferred charges or charges to income and the amount involved, exclusive of interest and costs,
exceeds 10 percent of the current assets of the registrant and its subsidiaries on a consolidated basis: or
C. A governmental authority is a party to such proceeding and such proceeding involves potential monetary
sanctions, unless the registrant reasonably believes that such prodding will result in no monetary sanctions. or in
monetary sanctions. exclusive of interest and costs. of ed and
less than S100,000: provided however, that such proceedings which are similar in nature may be group
described generically.

I. Calculating Design Return Flow
Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #1
Design flow based on permitted capacity of average daily flow and current flow. Current
permited capacity is 13.5 MGD. Return flow rates are expected to be 1.0 to 0.5 times flow
rate through the plant.
A. Calculating Future Flow Design Parameters
13.5 MGD x 1.0 13.5 MGD
13.5 MGD x 0.5 6.75 MGD
To distribute the return flow between pump station 1 and 2, use a ratio from previous
calculations of weir overflow rate of two 90' clarifiers to the weir overflow rate of the 130'
clarifiers.
Weir Overflow Rate
90' Clarifiers = 4,230,000 gpd
130' Clarifiers = 6,120,000 gpd
4,230,000 gdaYn x 2
= 40.86%
4,230,000 gdaYn x 2 + 6,120,000 gdaYn x 2
Therefore, assume 40.86% of total return flow is conveyed through pump station 1.
Max. Future Flow PS #1 13.5 MGD x 0.4086 / 1,440 3,831 gpm
Min. Future Flow PS #1 6.75 MGD x 0.4086 / 1,440 1,915 gpm
City of Eden, Residual Management Rehabilitation
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Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #1
II. Calculating the System Curve
Assumptions and inputs are highlighted yellow.
A. PS #1 Total Suction Head
Pressure (psi) 0
Wetwell Bottom Elevation (ft) 511.85
Wetwell Top Eleveation (ft) 519.60
Top of PS Slab Elevation (ft) 522.10
Pump Slab Thickness (ft)
0.66
Pump CL Height (ft)
2.00
Intake Height (ft from bottom)
1.00
Q value
140
Equivalent Length (ft)
31
Length
15
Number of Pumps
3
Diameter (in)
10
Material
DIP
Per
Total
Bell Entrance
1
2
2
90° Bend
2
7
14
45° Bend
0
8
0
Tee -Straight
0
5
0
Tee -Branch
0
25
0
Swing Valve (full open)
0
10
0
Globe Valve (full valve)
0
270
0
16
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B. PS #1 Total Discharge Head
Pressure (psi)
Pump Slab Thickness (ft)
Pump CL Height (ft)
Estimated Pump CL Elevation
Elevation of Splitter Box
C, value
Equivalent Length (ft)
Length
Diameter (in)
Material
90° Bend
45° Bend
Tee -Straight
Tee -Branch
Swing Valve (full open)
Globe Valve (full valve)
Gate Valve
16" x 10" Increaser
Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #1
0
0.66
2.00
524.76
527.80
140
74
18
10
DIP
3
0
0
0
1
0
1
1
Per
7
8
5
25
10
270
3
23
Total
20
0
0
0
10
0
3
23
56
708
614
16
DIP
0
0
1
2
0
0
3
0
Per
9
13
7
39
0
0
3
23
Total
0
0
7
78
0
0
10
0
94
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Mebane Bridge WWTP Residual Management Rehabilitation
EDEN Resizing Return Pumps at Pump Station #1
C. PS #1 Total Dynamic Head (ft)
TDH=hd - hs
10 16
Flow (gpm)
Velocity (fus)
Hf (ft)
Suction (ft)
Velocity (ft/,)
Hf (ft)
Hf (ft)
Discharge (ft)
TDH (ft)
831
3.40
0.12
12.03
1.33
0.28
0.27
3.59
15.62
1,331
5.44
0.28
12.19
2.13
0.68
0.65
4.37
16.56
1,831
7.49
0.51
12.42
2.92
1.22
1.18
5.43
17.85
1,915
7.83
0.55
12.46
3.06
1.32
1.28
5.64
18.10
2,331
9.53
0.79
12.70
3.72
1.90
1.84
6.78
19.49
2,831
11.58
1.14
13.05
4.52
2.73
2.63
8.40
21.45
3,331
13.62
1.54
13.45
5.32
3.69
3.56
10.28
23.73
3,831
15.67
1.99
13.90
6.12
4.78
4.61
12.42
26.32
4,831
19.76
3.06
14.97
7.721
7.33
7.08
17.45
32.42
D. Calculating NPSHA
NPSHA = hatm - he - hf - hvp - FS
Elevations (ft)
522
h,tm equation is valid for elvs. between 1,000-0 ft MSL, based on PS
harm (ft)
33.3
Design Book, p A.5, Table A-7
he (ft)
11.91
hvp equation is valid for temps. between 60-90F, based on PS Design
hf (ft)
1.99
Book, p A.6, Table A-9
Temperature WW (oF)
60
hvp (ft)
0.60
FS (ft)
2
NPSHA (ft) 16.80
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Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #1
III. Pump Selection and Pump Curve
A. Pump Selection
52
Gorman -Rupp Pump Information
Qpump (gpm)
2331
TDH (ft)
22
Speed (rpm)
832
Diameter (in)
14.75
NPSHR (ft)
9.41
Efficiency
68
Power (hp)
18.9
Pump Curve
T10A-13-16
Pump Impeller
38611-024
60
50
40
x 30
Q
H
20
10
0
Interpolated Pump Curve
TDH (ft) Flow (gpm) 2 Pumps in Parallel
52
0
52
44
500
47
38
1,000
43
34
1,500
40
27.5
2,000
37
19
2,500
35
3,000
33
3,500
30.5
4,000
27
4,500
24
5,000
19
Pump Station #1 Return Pumps
System Curve vs Pump Curves
0 1,000 2,000 3,000 4,000 5,000 6,000
Flow (gpm)
City of Eden, Residual Management Rehabilitation
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Mebane Bridge WWTP Residual Management Rehabilitation
EDEN Resizing Return Pumps at Pump Station #1
B. Pump Evaluation
NPSHRmax (ft) 12.00
NPSHA (ft) 16.80 OK
Design Flow Rate (gpm) 3,831
Flow Rate of One Pump at Design Head (gpm) 2,331
Flow Rate of Two Pumps at Design Head (gpm) 3,800 Problem
City of Eden, Residual Management Rehabilitation
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community Inrrooruclure consunants Page 1-6

Mebane Bridge WWTP Residual Management Rehabilitation
EDEN Resizing Waste Pumps at Pump Station #1
I. Calculating Design Waste Flow
Design waste flow was calculated in spreadsheet "Aerobic Sludge Digester" based
on influent flow rate, influent parameters, and standard assumptions.
Current Waste Flow Rate 109,241 gpd 76 gpm
Future Waste Flow Rate 3351089 gpd 233 gpm
109,241 gpd is the total waste flow for both pump station 1 and 2. To calculate the
waste flow from pump station 1 use a ratio from previous calculations of total
flow to weir overflow rate of two 90' clarifiers.
As before, assume 40.86% of total return flow is conveyed through pump station 1.
Current Waste Flow Through PS #1 76 gpm x 0.4086 31 gpm
Future Waste Flow Through PS #1 233 gpm x 0.4086 95 gpm
The limiting factors of wasting are that the Clean B operates between 175 gpm and
265 gpm.
Target design flow rate for wasting pumps
WD
IGKSQN
Community infrastruclure consultants
200 gpm
City of Eden, Residual Management Rehabilitation
20170041.00.CL
7/26/2018
Page 2-1

Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Waste Pumps at Pump Station #1
II. Calculating the System Curve
Assumptions and inputs are highlighted yellow.
A. PS #1 Total Suction Head
Pressure (psi) 0
Wetwell Bottom Elevation (ft) 511.85
Wetwell Top Eleveation (ft) 519.60
Top of PS Slab Elevation (ft) 522.10
Pump Slab Thickness (ft)
0.25
Pump CL Height (ft)
2.00
Intake Height (ft from bottom)
1.00
C, value
140
Equivalent Length (ft)
17
Length
11
Number of Pumps
2
Diameter (in)
6
Material
DIP
Per
Total
Bell Entrance
1
1
1
90° Bend
1
5
5
45' Bend
0
s
0
Tee -Straight
0
s
0
Tee -Branch
0
15
0
Swing Valve (full open)
0
s
0
Globe Valve (full valve)
0
150
0
6
City of Eden, Residual Management Rehabilitation
201700 26/2018
WDIGKSQN
Community infrastruclure consultants Page 2-2

Mebane Bridge WWTP Residual Management Rehabilitation
EDEN Resizing Waste Pumps at Pump Station #1
B. PS #1 Total Discharge Head
Pressure (psi)
0
Pump Slab Thickness (ft)
0.25
Pump CL Height (ft)
2.00
Estimated Pump CL Elevation
524.35
Elevation of New Day Tank
550.20
C, value
140
Equivalent Length (ft)
59
42
Length
37
32
Diameter (in)
4
4
Material
DIP
Per
Total
DIP
Per
Total
90° Bend
4
3
14
2
3
7
45' Bend
0
3
0
0.5
3
1
Tee -Straight
1
2
2
1
2
2
Tee -Branch
0
10
0
0
10
0
Swing Valve (full open)
1
3
3
0
3
0
Globe Valve (full valve)
0
99
0
0
99
0
Gate Valve
1
3
3
0
3
0
22
10
Headloss through Clean B
5
psi x
2.31
ft =
11.6 ft
City of Eden, Residual Management Rehabilitation
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Community inlrastruclure consultants Page 2-3

Mebane Bridge WWTP Residual Management Rehabilitation
EDEN Resizing Waste Pumps at Pump Station #1
C. PS #1 Total Dynamic Head (ft)
TDH = hd - hs
4 4
Flow (,m)
Velocity (ft/,)
Hf (g)
Suction (ft)
Velocity (ft/,)
Hf (ft)
Hf (ft)
Discharge (ft)
TDH (ft)
95
1.08
0.01
11.51
2.43
0.35
0.25
37.75
49.26
110
1.25
0.02
11.52
2.81
0.46
0.33
37.86
49.38
125
1.42
0.02
11.52
3.20
0.58
0.42
37.98
49.51
140
1.59
0.03
11.53
3.58
0.72
0.52
38.12
49.65
155
1.76
0.03
11.53
3.96
0.87
0.63
38.27
49.80
170
1.93
0.04
11.54
4.35
1.03
0.74
38.43
49.97
185
2.10
0.05
11.55
4.73
1.20
0.87
38.60
50.15
200
2.27
0.06
11.56
5.11
1.39
1.00
38.79
50.34
220
2.50
0.07
11.57
5.62
1.66
1.20
39.06
50.62
240
1 2.73
1 0.08
1 11.581
6.14
1.95
1.401
39.351
50.92
D. Calculating NPSHA
NPSHA = hatm - he - hp - h,p - FS
Elevations (a) 522 hatm equation is valid for elvs. between 1,000-0 ft MSL, based on PS
Design Book, p A.5, Table A-7
hatm (ft) 33.3
he (ft) 11.50 hemp equation is valid for temps. between 60-90F, based on PS Design
hf (ft) 0.06 Book, p A.6, Table A-9
Temperature WW(oF) 60
hemp (ft) 0.60
FS (ft) 2
NPSHA (ft) 19.14
City of Eden, Residual Management Rehabilitation
201700 26/2018
WDIICKSQN
Community inlrastruclure consultants Page 2-4

III. Pump Selection and Pump Curve
1E. Pump Selection
Flow (gpm)
Gorman -Rupp Pump
Information
Qpump (gpm)
200
TDH (a)
52.00
Speed (rpm)
1300
Diameter (in)
9.75
NPSHR (ft)
4.53
Efficiency
37
Power (hp)
7.18
Pump Curve
T4A-B-4
Pump Impeller
10528
57.0
55.0
53.0
x 51.0
Q
H
49.0
47.0
45.0
70
Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Waste Pumps at Pump Station #1
Interpolated Pump Curve
TDH (ft)
Flow (gpm)
48.6
240
50.3
200
52.2
160
54.1
120
56.0
80
Pump Station #1 Waste Pumps
System Curve vs Pump Curve
90 110 130 150 170
Flow (gpm)
B. Pump Evaluation
NPSHRmax (ft)
NPSHA (ft)
Design Flow Rate (gpm)
Flow Rate of One Pump at Design Head (gpm)
WD
IICKSQN
Community inlrastwdure consultants
190 210 230 250
4.57
19.14 OK
175-260
200 OK
City of Eden, Residual Management Rehabilitation
20170041.00.CL
7/26/2018
Page 2-5

Mebane Bridge WWTP Residual Management Rehabilitation
EDEN Resizing Return Pumps at Pump Station #2
I. Calculating Design Flow
Design flow should be based on future full capacity of current permitted flow and current
flow. Current permitted capacity is 13.5 MGD. Return flow rates are expected to be 1.0 to
0.5 time the flow rate through the plant.
A. Calculating Future Flow Design Parameters
13.5 MGD x 1.0 13.5 MGD
13.5 MGD x 0.5 6.75 MGD
To distribute the return flow between pump station 1 and 2, use a ratio from previous
calculations of weir overflow rate of two 90' clarifiers to the weir overflow rate of the two
130' clarifiers.
Previous calculation indicate that 40.86% of the flow is distributed through pump station 1
while the remainer is conveyed through pump station 2. Therefore ...
Therefore, assume (100% - 40.86%) 59.14% of total return flow is conveyed
through pump station 2.
Max. Future Flow PS #2 13.5 MGD x 0.5914 / 1440 5,544 gpm
Min. Future Flow PS #2 6.75 MGD x 0.5914 / 1440 2,772 gpm
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Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #2
II. Calculating the System Curve
Assumptions and inputs are highlighted yellow.
1A. PS #2 Total Suction Head
Pressure (psi) 0
Wetwell Bottom Elevation (ft) 507.58
Wetwell Top Eleveation (ft) 520.00
Top of PS Slab Elevation (ft) 524.00
Pump Slab Thickness (ft)
0.66
Pump CL Height (ft)
2.00
Intake Height (ft from bottom)
1.00
Q value
140
Equivalent Length (ft)
29
Design Length
20
Number of Pumps
3
Diameter (in)
10
Material
DIP
Per
Total
Bell Entrance
1
2
2
90° Bend
1
7
7
45° Bend
0
8
0
Tee -Straight
0
5
0
Tee -Branch
0
25
0
Swing Valve (full open)
0
10
0
Globe Valve (full valve)
0
270
0
9
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�WK
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community Iniroomoure consunants Page:3-2

1B. PS #2 Total Discharge Head
Pressure (psi)
Pump Slab Thickness (ft)
Pump CL Height (ft)
Pump CL Elevation (ft)
Elevation of Splitter Box
C, value
Equivalent Length (ft)
Design Length
Diameter (in)
Material
90° Bend
45° Bend
Tee -Straight
Tee -Branch
Swing Valve (full open)
Globe Valve (full valve)
Gate Valve
24" x 10" Increaser
0
0.66
2.00
526.75
527.80
140
142
51
10
DIP
5
0
2
0
1
0
1
1
1C. PS #2 Total Dynamic Head (ft)
TDH = hd - hs
Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #2
Per
7
8
5
25
10
270
3
35
Total
34
0
9
0
10
0
3
35
91
527
527
24
DIP
0
0
0
0
0
0
0
0
Per
13
20
9
57
0
0
3
35
Total
0
0
0
0
0
0
0
0
0
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DICKSON 6/2018
community Inirooruclure consunants Page:3-3

Mebane Bridge WWTP Residual Management Rehabilitation
i Resizing Return Pumps at Pump Station #2
10 24
Flow (gpm)
Velocity (fus)
Hf (ft)
Suction (ft)
Velocity (ftp,)
Hf (ft)
Hf (ft)
Discharge (ft
TDH (ft)
1,044
4.27
0.17
19.25
0.74
0.82
0.04
1.92
21.17
1,544
6.32
0.35
19.43
1.10
1.70
0.09
2.84
22.27
2,044
8.36
0.59
19.67
1.45
2.86
0.15
4.06
23.72
2,544
10.41
0.88
19.96
1.81
4.28
0.22
5.55
25.51
2,772
11.34
1.03
20.11
1.97
5.02
0.26
6.33
26.44
3,044
12.45
1.23
20.31
2.16
5.97
0.31
7.33
27.63
3,544
14.50
1.62
20.70
2.52
7.91
0.411
9.37
30.07
4,044
16.54
2.07
21.15
2.87
10.09
0.53
11.67
32.82
4,544
18.59
2.57
21.65
3.23
12.52
0.65
14.22
35.87
5,044
20.63
3.12
22.20
3.58
15.19
0.79
17.03
39.23
5,544
22.68
3.71
22.79
3.94
18.09
0.94
20.08
42.88
6,544
26.77
5.05
24.13
4.65
24.581
1.281
26.91
51.04
D. Calculating NPSHA
NPSHA = hatm - he - hf - h,p - FS
Elevationps (ft)
522
hat. equation is valid for elvs. between 1,000-0 ft MSL, based on PS
harm (ft)
33.3
Design Book, p A.5, Table A-7
he (ft)
18.08
hvp equation is valid for temps. between 60-90F, based on PS Design
h f (ft)
3.71
Book, p A.6, Table A-9
Temperature WW (-F)
60
hvp (ft)
0.60
FS (ft)
2
NPSHA A 8.90
City of Eden, Residual Management Rehabilitation
�WK
201700 2
DICKSON 6/2018
community Infrooruclure consunants Page:3-4

III. Pump Selection and Pump Curve
A. Pump Selection
67
Gorman -Rupp Pump Information
Qpump (gpm)
2800
TDH (ft)
27.00
Speed (rpm)
956
Diameter (in)
14.75
NPSHR (ft)
11.7
Efficiency
65
Power (hp)
30
Pump Curve
T10A-B-16
Pump Impeller
38611-024
so.o
70.0
60.0
I
50.0
x 40.0
Q
H
30.0
20.0
10.0
0.0
Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #2
Interpolated Pump Curve
TDH (ft) Flow (gpm) TDH 2 in Parallel
67.0
0
67
57.0
500
63
51.0
1000
57
46.0
1500
54
40.0
2000
51
33.0
2500
49
22.0
3000
47
3500
43
4000
40
4500
37
5000
33
5500
28
Knnn
r)12
Pump Station #2 Return Pumps
System Curve vs Pump Curves
0 1000 2000 3000 4000 5000 6000 7000
Flow (gpm)
�DICKSON
community Inirooruclure consunant5
City of Eden, Residual Management Rehabilitation
20170041.00.CL
7/26/2018
Page:3-5

B. Pump Evaluation
Mebane Bridge WWTP Residual Management Rehabilitation
Resizing Return Pumps at Pump Station #2
NPSHRmax (ft) 11.70 ft
NPSHA (ft) 8.90 ft Problem
Design Flow Rate (gpm)
Flow Rate of One Pump at Design Head (gpm)
Flow Rate of Two Pumps at Design Head (gpm)
�DICKSON
community Inirooruclure consunant5
5,544 gpm
2,700 gpm
4,700 gpm Problem
City of Eden, Residual Management Rehabilitation
20170041.00.CL
7/26/2018
Page:3-6

Mebane Bridge WWTP Residuals Management Rehabilitation
EDEN Resizing Waste Pumps at Pump Station #2
I. Calculating Design Flow
Design waste flow was calculated in spreadsheet "Aerobic Sludge Digester"
based on influent flow rate, influent parameters, and standard assumptions.
Current Waste Flow Rate 109,241 gpd 76 gpm
Future Waste Flow Rate 335,089 gpd 233 gpm
109,241 gpd is the total waste flow for both pump station 1 and 2. To calculate
the waste flow from pump station 1 use a ratio from previous calculations of total
flow to weir overflow rate of two 90' clarifiers.
As before, assume 59.14% of total return flow is conveyed through pump station 1.
Current Waste Flow Through PS #1 76 gpm x 0.5914 45 gpm
Future Waste Flow Through PS #1 233 gpm x 0.5914 138 gpm
The limiting factors of wasting are that the Clean B operates between 175 gpm
and 265 gpm.
Target design flow rate for wasting pumps
�DICKSON
Community Inirostruclure consunants
200 gpm
City of Eden, Residual Management Rehabilitation
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7/26/2018
Page: 4-1

Mebane Bridge WWTP Residuals Management Rehabilitation
Resizing Waste Pumps at Pump Station #2
H. Calculating the System Curve
Assumptions and inputs are highlighted yellow.
A. PS #2 Total Suction Head
Pressure (psi) 0
Wetwell Bottom Elevation (ft) 511.37
Wetwell Top Eleveation (ft) 520.00
Pump CL Height (ft)
0.38
C, value
150
Equivalent Length (ft)
0
Length
0
Number of Pumps
2
Diameter (in)
6
Material
DIP
Per
Total
90° Bend
0
5
0
45° Bend
0
5
0
Tee -Straight
0
3
0
Tee -Branch
0
15
0
Swing Valve (full open)
0
5
0
Globe Valve (full valve)
0
150
0
Bell Entrance
0
1
0
0
City of Eden, Residual Management Rehabilitation
201700 26/2018
/DICKSON
community infrostruclure consultonls Page: 4- 2

B. PS #2 Total Discharge Head
Pressure (psi)
0
Pump Slab Elevation
512.50
Pump CL Height (ft)
0.38
Estimated Pump CL Elevation
512.88
Elevation of Proposed Day Tar
550.20
C, value
150
Equivalent Length (ft)
85
Length
14
Diameter (in)
8
Material
DIP
90° Bend
3
45° Bend
0
Tee -Straight
0
Tee -Branch
1
Swing Valve (full open)
1
Globe Valve (full valve)
0
Gate Valve
1
8" x 4" Increaser
1
Headloss through Clean B
Mebane Bridge WWTP Residuals Management Rehabilitation
Resizing Waste Pumps at Pump Station #2
Per
6
6
4
20
7
210
3
23
5 psi x
Total
17
0
0
20
7
0
3
23
71
2.31 ft
83
83
8
DIP
0
0
0
0
0
0
0
0
Per Total
6 0
6 0
4 0
20 0
7 0
210 0
3 0
23 0
0
11.6 ft
City of Eden, Residual Management Rehabilitation
201700 26/2018
/DICKSON
community infrostruclure consultonls Page: 4- 3

C. PS #2 Total Dynamic Head (ft)
TDH=hd - hs
0
Mebane Bridge WWTP Residuals Management Rehabilitation
Resizing Waste Pumps at Pump Station #2
Common FM
E
Flow (gpm)
Velocity (fus)
Hf (ft)
Suction (ft)
Velocity (ft/,)
Hf (ft)
Hf (ft)
Hf (ft)
Discharge (ft)
60
0.00
0.00
-7.12
0.38
0.01
0.01
0.11
49.00
80
0.91
0.00
-7.12
0.51
0.01
0.01
0.19
49.08
100
1.14
0.00
-7.12
0.64
0.02
0.02
0.29
49.19
120
1.36
0.00
-7.12
0.77
0.02
0.02
0.41
49.32
140
1.59
0.00
-7.12
0.89
0.03
0.03
0.54
49.47
160
1.82
0.00
-7.12
1.02
0.04
0.04
0.69
49.64
180
2.05
0.00
-7.12
1.15
0.05
0.05
0.86
49.83
200
2.27
0.00
-7.12
1.28
0.06
0.06
1.04
50.03
240
2.73
0.00
-7.12
1.53
0.08
0.08
1.46
50.50
280
3.18
0.00
-7.12
1.79
0.11
0.11
1.95
51.04
320
3.64
0.00
-7.12
2.051
0.14
0.14
2.49
51.65
360
4.09
0.00
-7.121
2.301
0.18
0.18
3.10
52.32
%D
IICKSON
community infrostruclure consultonls
City of Eden, Residual Management Rehabilitation
20170041.00.CL
7/26/2018
Page: 4- 4

Mebane Bridge WWTP Residuals Management Rehabilitation
Resizing Waste Pumps at Pump Station #2
III. Pump Selection and Pump Curve
1E. Existing Pump Evaluation
Tsurumi Pump Information
Qpump (gpm) 260
TDH (ft) 39.00
Speed (rpm) 1731
Diameter (in)
NPSHR (ft)
Efficiency % 42
Power (hp) 7.5
Pump No. TOS100C45.5-CR-63
Impeller No.
BE
50
40
x 30
Q
H
20
10
0
0
Interpolated Pump Curve
TDH (ft)
Flow (gpm)
62
0
57
50
53
100
48
150
44
200
40
250
35
300
31
350
Pump Station #2 Waste Pumps
System Curve vs. Pump Curves
TDH (ft) Flow (gpm)
26
400
22
450
17
500
12
550
7
600
50 100 150 200 250 300 350 400 450 500 550 600 650
Flow (gpm)
B. Pump Evaluation
Design Flow Rate (gpm)
Flow Rate of One Pump at Design Head (gpm)
%D
IICKSON
community inlrostruc lure consultonls
175-260
220 OK
City of Eden, Residual Management Rehabilitation
20170041.00.CL
7/26/2018
Page: 4- 5

Mebane Bridge WWTP Residual Management Rehabilitation
EDEN Design of Transfer Pump Station
I. Calculating Design Flow
Design flow should be loosely based on proposed day tank influent flow rate of 200 gpm,
the existing day tank volume of 50,000 gallons. Most likely need is to be able to fill the
existing day tank in rapid succession. Therefore design pumps to be able to fill existing day
tank within 4 hours.
Recommended Design Flow Rate 208 gpm
All calculations are based on elevations from 1990s drawings.
II. Calculating the System Curve
1A. Transfer Pump Station Total Suction Head
Pressure (psi)
0
Tank Bottom Elevation (ft)
521.75
Tank Max. Water Level (ft)
548.25
Top of PS Slab Elevation (ft)
521.75
Pump Slab Thickness (ft)
0.50
Pump CL Height (ft)
2.00
Intake Height (ft from bottom)
0.50
C, value
150
Equivalent Length (ft)
30
Design Length
17
Number of Pumps
2
Diameter (in)
4
Material
DIP
Per
Total
Bell Entrance
1
1
1
90° Bend
2
3
7
45° Bend
0
3
0
Tee -Straight
1
2
2
Tee -Branch
0
10
0
Swing Valve (full open)
0
3
0
Globe Valve (full valve)
0
99
0
Gate Valve
1
3
3
13
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community Introomoure consunants Page:5-1

Mebane Bridge WWTP Residual Management Rehabilitation
ED Design of Transfer Pump Station
1B. Transfer PS Total Discharge Head
Pressure (psi)
0
Pump Slab Thickness (ft)
0.50
Pump CL Elevation (ft)
524.25
Discharge Elevation
551.25
Q value
150
Equivalent Length (ft)
57
411
Design Length
23
368
Diameter (in)
4
4
Material
DIP
Per
Total
PVC
Per
Total
90° Bend
4
3
14
1
6
6
45° Bend
1.5
3
4
3.5
4
12
Tee -Straight
0
2
0
0
3
0
Tee -Branch
1
10
10
1
12
12
Swing Valve (full open)
1
3
3
0
38
0
Globe Valve (full valve)
0
99
0
0
120
0
Gate Valve
1
3
3
0
#N/A
#N/A
Plug Valve
0
#N/A
#N/A
1
13
13
34
43
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community Iniroomoure consunants Page:5-2

Mebane Bridge WWTP Residual Management Rehabilitation
ED Design of Transfer Pump Station
1C. Transfer PS Total Dynamic Head (ft)
TDH=hd - hs
4 4
Flow (gpm)
Velocity (fUs)
Hf (ft)
Suction (ft)
Velocity (ftp,)
Hf (ft)
Hf (ft)
Discharge (ft)
TDH (ft)
114
2.92
0.22
-2.28
2.92
0.42
3.04
30.46
28.18
125
3.19
0.26
-2.24
3.19
0.49
3.57
31.07
28.82
135
3.46
0.30
-2.20
3.46
0.57
4.14
31.72
29.51
146
3.72
0.34
-2.16
3.72
0.66
4.75
32.41
30.25
156
3.99
0.39
-2.11
3.99
0.75
5.40
33.14
31.03
166
4.25
0.44
-2.06
4.25
0.84
6.08
33.92
31.86
177
4.52
0.49
-2.01
4.52
0.94
6.80
34.75
32.74
187
4.79
0.55
-1.95
4.79
1.05
7.56
35.61
33.66
198
5.05
0.60
-1.90
5.05
1.16
8.36
36.52
34.62
208
5.32
0.66
-1.84
5.32
1.27
9.19
37.46
35.63
233
5.96
0.82
-1.68
5.96
1.57
11.34
39.91
38.23
258
6.60
0.99
-1.51
6.60
1.90
13.69
42.59
41.07
283
7.23
1.17
1 -1.331
7.23
2.25
16.24
45.491
44.17
D. Calculating NPSHA
NPSHA = hatm - he - hf - h,p - FS
Elevationps (ft)
526
hat. equation is valid for elvs. between 1,000-0 ft MSL, based on PS
harm (ft)
33.3
Design Book, p A.5, Table A-7
he (ft)
2.00
hvp equation is valid for temps. between 60-90F, based on PS Design
h f (ft)
0.66
Book, p A.6, Table A-9
Temperature WW (oF)
60
hvp (ft)
0.60
FS (ft)
2
NPSHA A 28.04
City of Eden, Residual Management Rehabilitation
�WK
201700 2
DICKSON 6/2018
community Infroomoure consunants Page:5-3

III. Pump Selection and Pump Curve
A. Pump Selection
Flow (gpm)
Gorman -Rupp Pump Information
Qpump (gpm)
225
TDH (ft)
42.00
Speed (rpm)
1208
Diameter (in)
9.75
NPSHR (ft)
4.85
Efficiency
52.1
Power (hp)
5.54
Pump Curve
T4A-B-4
Pump Impeller
10528
50.0
48.0
46.0
44.0
-.42.0
x 40.0
Q
F" 38.0
36.0
34.0
32.0
30.0
Mebane Bridge WWTP Residual Management Rehabilitation
Design of Transfer Pump Station
Interpolated Pump Curve
TDH (ft)
Flow (gpm)
40.2
270
42.1
225
43.9
180
45.9
135
47.8
90
Transfer Pump Station Pumps
System Curve vs Pump Curves
75 125 175 225 275 325
Flow (gpm)
Based on a ReliaSource 6X6 Above Ground Lift Station.
City of Eden, Residual Management Rehabilitation
�WK
201700 2
DICKSON 6/2018
community Inirooruclure consunants Page:5-4

Mebane Bridge WWTP Residual Management Rehabilitation
l: Design of Transfer Pump Station
B. Pump Evaluation
NPSHRmaX (ft) 4.85
NPSHA (ft) 28.04 OK
Design Flow Rate (gpm) 208
Flow Rate of One Pump at Design Head (gpm) 255 OK
�DICKSON
community Inirooruclure consunant5
City of Eden, Residual Management Rehabilitation
20170041.00.CL
7/26/2018
Page:5-5