NC0065684_Authorization to Construct_20181207

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December 4, 2018
Mr. Bing Bai, Ph.D., El
Environmental Engineer
NPDES Complex Permitting
NC DEQ/ Division of Water Resources / Water Quality Permitting
512 North Salisbury St.
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: Authorization to Construct - Application
Country Woods East W WTP — Blower Replacement Project
Dear Mr. Bai:
This letter will serve as the cover letter for the Authorization to Construct Application.
RK&K sent an email to you on October 30, 2018 to introduce the project for replacing the blowers and
your recommendation was to submit an application for Authorization to Construct permit. The permit for
this facility is NPDES permit: NC0065684.
Proposed in this treatment process modification project, will be the replacement of the existing blowers,
which are currently dedicated to each of the three activated sludge treatment trains, with blowers
discharging into a common header and feeding all three treatment trains. Four new blowers will be
provided, sized to provide the required air with three blowers, and one standby blower at peak aeration
demands. Flow to each of the activated sludge treatment trains will be capable of being isolated by a
manually controlled valve at each of the treatment trains.
Included in this application package are the following:
1. Authorization to Construct Application
2. Calculations for proposed aeration system
3. Blower information from the manufacturer
4. NPDES Permit
5. Schematic Plans (Process and Electrical)
The construction of the expansion will start upon receiving the Authorization to Construct permit. The
construction project is expected to be completed by April 2019.
Please feel free to contact me with any questions or concerns at 919-878-9560 or [e-mail].
Sincerely,
Rummel, Klepper & Kahl, LLP
CC: Kevin Nash, PE
�
Michael Melton (Aqua INC)
Joseph Pearce (Aqua NC)
RK K Page 1 A, ILIA

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONVENTAL 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 may be required from other Sections
of the Division of Water Resources (for example: reclaimed water facilities permits; Class A or B biosolids residuals permit).
SECTION 2: APPLICANT INFORMATION AND PROJECT DESCRIPTION
A. APPLICANT
Applicant's name
Aqua North Carolina
Signature authority's name per 15A NCAC 02T .0106(b)
Michael Melton
Signature authority's title
Engineering Manager
Complete mailing address
4163 Sinclair St, Denver, NC 28037
Telephone number
704-489-9404
Email address
[e-mail]
B. PROFESSIONAL ENGINEER
Professional Engineer's name
Kevin Nash
Professional Engineer's title
Manager
North Carolina Professional Engineer's License No.
045517
Firm name
RK&K
Firm License number
F-0112
Complete mailing address
900 Ridgefield Dr, Suite 350, Raleigh, NC 27609
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 919-878-9560
Email address [e-mail]
C. NPDES PERMIT
NPDES Permit number
NCO065684
Current Permitted flow (MGD) — include permit
0.48 MGD (up to 0.67 MGD)
flow phases if applicable
D. PROJECT DESCRIPTION
Provide a brief description of the project: This project will replace the main aeration blowers. The existing blowers are dedicated
to each of the three activated sludge reactors. Each activated sludge reactor has a duty and a standby blower. The existing
blowers are located on the top of the reactor tanks. The replacement blowers will be installed on a concrete pad at grade. The
new blower confieuration will be three dutv blowers and one standbv blower. All blowers will be powered by VFDs. All four
blowers will discharge into a single aeration header and provide air to all three reactor tanks.
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 133-3, North Carolina
General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment
Facilities are not met by the proposed design, the letter must include an itemized list of the requirements that are not met.
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
ENVIRONVENTAL 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: None
H. Engineering Calculations
® 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
LISCOE / 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(i) 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
ENVIRONVENTAL 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:
Plant Flows
Existing Plant Design
Current NPDES Permit Limit
Current Annual Average
(past 12 months)
For Past 12 Months:
Start Date: 8/2017
End Date: 8/2018
For Past 24 Months:
Start Date: 8/2016
End Date: 8/2018
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
ENVIRONVENTAL 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
Have all of the requirements of 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General Statute 133-3, North Carolina
General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment
Facilities been met by the proposed design and specifications? ❑ Yes or ❑ No. If no, provide justification as to why the
requirements are not met, consistent with 15A NCAC 02T .0105(n):
2. Provide the design influent and effluent characteristics that are used as the basis for the project design, and the NPDES
permit limits for the following parameters:
Project Basis of Design
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
0.5 mg/I winter
0.5 mg/I winter
(NH3-N)
46 mg/I
0.5 mg/I summer
0.5 mg/I summer
Biochemical
5.0 mg/I winter
18 mg/I winter
Oxygen Demand
350 mg/I
(BODO
5.0 mg/I summer
10 mg/I summer
Fecal Coliform
Nitrate + Nitrite
Nitrogen (NO3-N +
N 02-N )
Total Kjeldahl
Nitrogen
Total Nitrogen
Total Phosphorus
Total Suspended
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

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONVENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14)
4. Per 15A NCAC 02T .0505(I), 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(I), 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
02T .105(n): No Changes proposed to the sludge production or sludge processes.
8. Per 15A NCAC 02T .0505(q), the public shall be prohibited from access to the wastewater treatment facilities. Explain how
the design complies with this requirement: Fenced Facility
N
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):
No. of
Plan Sheet
SReferencepecification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reerence
f
Provided?
(Yes or No)
Manual Bar Screen
Bar Rack
MGD at peak hourly flow
Mechanical Bar
Band Screen
3.06 MGD at peak hourly flow
Screen
Grit Removal
MGD at peak hourly flow
Flow Equalization
--
133,293 gallons
ft diameter; ft side
Primary Clarifier
Circular
water depth
square feet; ft side
Primary Clarifier
Rectangular
water depth
Other
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)
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
Aerobic Zones/
Tanks
gallons
Anoxic Zones/
Tanks
gallons
Anaerobic
gallons
Zones/Tanks
Sequencing Batch
-
gallons
Reactor (SBR)
Membrane
-
gallons
Bioreactor (MBR)
Secondary Clarifier
Circular
ft diameter; ft
side water depth
Secondary Clarifier
Rectangular
square feet; ft
side water depth
Other
TERTIARY TREATMENT
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
Tertiary Clarifier
Circular
ft diameter; ft
side water depth
Tertiary Clarifier
Rectangular
square feet; ft
side water depth
Tertiary Filter
square feet
Tertiary Membrane
square feet
Filtration
Post -Treatment
--
gallons
Flow Equalization
Post -Aeration
gallons
Other
4. DISINFECTION
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
gal/day per bank at peak
Ultraviolet Light
(Parallel; in
hourly flow; number of
series)
banks; number of
lamps/bank
Chlorination
(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
(Gas;
gallons of contact
tablet; liquid)
tank/unit
S. RESIDUALS TREATMENT
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
Gravity Thickening
square feet; ft side
Tank
water depth
Mechanical
Thickening/
dry lb/hour
Dewatering
Aerobic Digestion
gallons
Anaerobic
gallons
Digestion
Composting
dry lb/hour
Drying
dry lb/hour
Other
6. PUMP SYSTEMS (include influent, intermediate, effluent, major recycles, waste sludge, thickened waste sludge and plant
drain pumps)
Location
No. of
Pumps
Purpose
Type
Capacity of
each pump
plan Sheet
Reference
Specification
Reference
GPM
I TDH
Flow Equalization
2
Johnston County
Sewer Interconnect
Wet -pit Submersible
575
220
PM-1,2
11140
7. MIXERS
Location
No. of
Mixers
Purpose
Type
Power of
each MP ixer
Plan Sheet
Reference
Specification
Reference
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
(Clo
plan Sheet
Reference
Specification
Reference
Activated Sludge
Reactor
4
Main aeration
Screw Compressor
550 scfm
9. ODOR CONTROL
Location
No. of
Units
Purpose
Type
Plan Sheet
Reference
Specification
Reference
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:
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
Have any setback waivers been obtained per 15A NCAC 02T .0506(d)? ❑ Yes or ® No. If yes, have these waivers been
written, notarized and signed by all parties involved and recorded with the County Register of Deeds? ❑ Yes or ❑ No. If
no, provide an explanation:
Application for Authorization to Construct Permit (FORM ATC-12-14) Page 11

State of North Carolina
Department of Environmental Quality
Division 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, Kevin Nash attest that this application package for an Authorization to Construct
(Typed Name of Professional Engineer)
for the Country Woods East W WTP — Blower Replacement
(Facility and Project Name)
was prepared under my direct supervisory control and to the best of my knowledge is accurate, complete and consistent
with the information supplied in the engineering plans, specifications, calculations, and all other supporting
documentation for this project. I further attest that to the best of my knowledge the proposed design has been
prepared in accordance with all applicable regulations and statutes, 15 NCAC 02H. 0100 15A NCAC 02T, North Carolina
General Statute 133-3 North Carolina General Statute 143-215.1 and Division of Water Resources Minimum Design
Criteria for NPDES Wastewater Treatment Facilities, and this Authorization to Construct Permit Application, except as
provided for and explained in Section 4.13.1 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
oplication 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 143-215.6E 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:
\\I\1I II Itl��/„//
o° H CARP
E
FSS%p°-
;�`?,:gip .y9•SE
W.
Application for Authorization to Construct Permit (FORM ATC-12-14) Page 12

State of North Carolina
Department of Environmental Quality
Division of Waterlmources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM IBC-12-14)
SECTION 6: APPLICATION CERTIFICATION BY APPLICANT
Applicant's Certification per iSA NCAC 02T_.0106(b):
I, Michael Melton, Engineering Manager, attest that this application package for an Authorization to Construct
(Typed Name of Signature Authority and Title)
for the Country Woods East WWTP`Blower Replacement
(Facility and Project Name)
has been reviewed by me and is accurate and complete to the best of my knowledge. I also understand thatila
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 certifythat in
accordance with 1SA NCAC 021 .0120 b , the Applicant or any affiliate has not been convicted of environrnentalcrimes,
has not abandoned a wastewater facility without proper closure, does not have an outstanding civil penaltVwbere all
appeals have been abandoned or exhausted, are compliant with any active compliance schedule, and doesnothave any
overdue annual fees.
I understand that the Division of Water Resources' issuance of the Authorization to Construct Permit maybe based
solely upon acceptance of the Licensed Professional Engineer's Certification contained in Section 5, and thattheDivision
may waive the technical review of the plans, specifications, calculations and other supporting documentationpmvided
i this application package. I further understand that the application package may be subject to a future atdiL
I understand that in accordance with General Statutes 143-215.6A and 143-215.6B any person who knowinglymakes
any false statement, representation, or certification in any application package shall be guilty of a Class 2 misdeneanor,
which may include a fine not to exceed $10,000, as well as civil penalties up to $25,000 per violation.
1 ^l A
Signature: 1 1_)1.�1-tJ tt(: "( Date:
THE COMPLETED APPLICATION AND SUPPORTING INFORMATION SHALL BE SUBMITTEDTO:
NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES/NPDES
By U.S. Postal Service By Courier/Special Delivery:
1617 MAIL SERVICE CENTER 512 N. SALISBURY STREET, 9TH FLOOR
RALEIGH, NORTH CAROLINA 27699-1617 RALEIGH, NORTH CAROLINA 27604
TELEPHONE NUMBER: [phone]
Application for Authorization to Construct Permit (FORM ATC-12-14) PaV13

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
(Gas;
gallons of contact
tablet; liquid)
tank/unit
S. RESIDUALS TREATMENT
No. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
Gravity Thickening
square feet; ft side
Tank
water depth
Mechanical
Thickening/
dry lb/hour
Dewatering
Aerobic Digestion
gallons
Anaerobic
gallons
Digestion
Composting
dry lb/hour
Drying
dry lb/hour
Other
6. PUMP SYSTEMS (include influent, intermediate, effluent, major recycles, waste sludge, thickened waste sludge and plant
drain pumps)
Location
No. of
Pumps
Purpose
Type
Capacity of
each pump
plan Sheet
Reference
Specification
Reference
GPM
I TDH
7. MIXERS
Location
No. of
Mixers
Purpose
Type
Power of
each MP ixer
plan Sheet
Reference
Specification
Reference
Application for Authorization to Construct Permit (FORM ATC-12-14) Page 10

CLARIFIER CLARIFIER CLARIFIER BLOWER BLOWER BLOWER BLOWER FUTU R E
ORI VE_ NO. I ORI VE_ NO. 2 ORI VE_ IV O. 3 NO. 1 NO. 2 NO. 3 NO. 4 BLOWER
FINAL DRAWING - FOR REVIEW
PURPOSES ONLY
NOT RELEASED FOR CONSTRUCTION
ONE -LINE DIAGRAM
NO SCALE
f Z#Cj%f c
RUMMEL, KLEPPER & KAHL, LLP, F-0112
900 RIDGEFIELD DRIVE • RALEIGH, NC 27609 • 888-521-4455
PROFESSIONAL CERTIFICATION. I HEREBY CERTIFY THAT THESE DOCUMENTS
WERE PREPARED OR APPR0VED BY ME, AND THAT I AM A DULY LICENSED
PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF MARYLAND,
LICENSE NO. 045517 EXPIRATION DA TE 12-31-2018
ID
CALE: AS SHOWN
ATE: NOVEMBER 2018
ESIGNED: JAH
RAWN:JAH
HECKED:DTB
ABBREVIATIONS
A - AMPERE
C - CONDUIT
GIRD. - GROUND
NO. - NUMBER
P - POLE
PH
- PHASE
S.S.
- STAINLESS STEEL
TYP.
- TYPICAL
V
- VOLTS
VFD
- VARIABLE FREQUENCY DRIVE
W
- WIRE, WIDE, WATT
SYMBOL
SCHEDULE
'U' - MOTOR (NUMBER INDICATES HP)
NON -FUSED DISCONNECT SWITCH
WIRING CONCEALED IN CONDUIT
0 - CIRCUIT BREAKER
T - MOTOR STARTER
THERMAL OVERLOAD
NOTES
1. ALL NEW EQUIPMENT AND WIRING IS SHOWN BOLD. EXISTING
EQUIPMENT IS SHOWN IN A LIGHT WEIGHT AND IDENTIFIED
WITH ITALICIZED TEXT.
2. FUTURE EQUIPMENT IS SHOWN IN A LIGHTWEIGHT AND
DASHED LINES.
3. REUSE EXISTING CONDUITS TO FULLEST EXTENT POSSIBLE
WHENEVER INSTALLING NEW EQUIPMENT.
4. THE CONTRACTOR SHALL REPLACE BREAKERS IN THE
EXISTING PANELBOARD AS SHOWN ON THIS DRAWING.
5. PANEL SHALL BE MODIFIED TO SUPPLY 480V TO OTHER
EXISTING PANELS AS SHOWN ON THIS DRAWING. ADD
ELECTRICAL COMPONENTS NECESSARY FOR A COMPLETE
INSTALLATION. ABANDON OR REMOVE UNNECESSARY
COMPONENTS.
6. NEMA 4X S.S. ENCLOSURE TO HOUSE POWER DISTRIBUTION
AND BRANCH CIRCUIT BREAKERS. CIRCUIT BREAKERS SHALL
BE SIZED AS SHOWN ON THIS DRAWING.
BLOWER REPLACEMENT PROJECT
COUNTRY WOODS
EAST WWTP
DRAWING
E-1
SHEET 1 OF 1
0
CL

FUTURE ENCLOSURE NEW ENCLOSURE
NEW ENCLOSURE
NEW ENCLOSURE
NEW ENCLOSURE
6" 6"xl0"
LEGEND
REDUCER
FILTER
CHECK VALVE
ICI MANUALLY OPERATED BUTTERFLY VALVE
FPIT PRESSURE TRANSMITTER
FF-M] FLOW METER
EXPANSION COUPLING
BELLOWS COUPLING
FINAL DRAWING - FOR REVIEW
PURPOSES ONLY
NOT RELEASED FOR CONSTRUCTION
AERATION BASIN #1-1
" < F, P"
A& A 4A I
RUMMEL, KLEPPER & KAHL, LLP, F-0112
900 RIDGEFIELD DRIVE • RALEIGH, NC 27609 • 888-521-4455
PROFESSIONAL CERTIFICATION. I HEREBY CERTIFY THAT THESE DOCUMENTS
WERE PREPARED OR APPROVED BY ME, AND THAT I AM A DULY LICENSED
PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF MARYLAND,
LICENSE NO. 045517 EXPIRATION DATE.- 12-31-2018
AERATION BASIN #2
DIFFUSER PODS DIFFUSER PODS
34 34
DIFFUSER DIFFUSER
QUANTITY QUANTITY
136 136
ACTIVATED SLUDGE REACTOR - AERATION SCHEMATIC
SCALE: AS SHOWN
DATE: NOVEMBER 2018
DESIGNED: KWN, MLT
DRAWN: DED
CHECKED:KCD
NOT TO SCALE
NO. I DATE
REVS
AERATION BASIN #3
DIFFUSER PODS
34
DIFFUSER
QUANTITY
136
BLOWER REPLACEMENT PROJECT
FUTURE BASIN #4
DIFFUSER PODS
34
DIFFUSER
QUANTITY
136
COUNTRY WOODS
EAST WWTP
DRAWING
1
SHEET 1 OF 1

WP = wire power consumption, hp
72
qs = standardized volumetric airflow rate, scfm
1617
%= actual airflow rate, acfm
1885
AOR = actual oxygen requirement, Ib/d
3110
SOTR = standard oxygen transfer rate, Ib/hr
6042
SOTE = standard oxygen transfer efficiency, function of depth, flux, and density, %
0.15
Q = Flow, MGD
0.50
Ta = blower inlet air temperature, degrees F
100
e = combined blower/motor efficiency
0.45
Pb = field atmosphere pressure, psia
14.50
Pd = blower discharge pressure, psig
4.79
BOD5 = BOD5 converted, mg/I
350.0
TKN =Raw Influent TKN converted, mg/I
70.0
a = Carbonaceous oxygen demand (ranges from 0.95 to 1.2, dependent on sludge age), lbO2/lbBOD5
1.20
b = Nitrogenous oxygen demand, 4.57 lbO2/lbNH3
4.57
a = (process water Kea of a new diffuser)/(clean water Kea of a new diffuser)
0.65
F = (process water Kea of a diffuser after a given time in service)/(KLa of a new diffuser in the same process water) = fouling factor
0.95
0 = 1.024
1.02
T = Process water temperature, C
18.00
0 = Kea/KLa20
0.95
�� = Pressure correction for C* — Pb/Ps
1.00
Ps = standard atmospheric pressure (14.7 psia)
14.70
= Temperature correction for C* = C*/C*20 = C*S/C*S20
1.04
_ (process water C*)/(clean water C*)
0.95
C*20 = steady state DO saturation concentration attained at infinite time for a given diffuser at 20 C and 1 atm, mg/I
9.08
C = Process water DO concentration, mg/I
1.00

WP = wire power consumption, hp
38
qs = standardized volumetric airflow rate, scfm
856
%= actual airflow rate, acfm
998
AOR = actual oxygen requirement, Ib/d
1439
SOTR = standard oxygen transfer rate, Ib/hr
3198
SOTE = standard oxygen transfer efficiency, function of depth, flux, and density, %
0.15
Q = Flow, MGD
0.50
Ta = blower inlet air temperature, degrees F
100
e = combined blower/motor efficiency
0.45
Pb = field atmosphere pressure, psia
14.50
Pd = blower discharge pressure, psig
4.79
BOD5 = BOD5 converted, mg/I
190.0
TKN =Raw Influent TKN converted, mg/I
25.0
a = Carbonaceous oxygen demand (ranges from 0.95 to 1.2, dependent on sludge age), lbO2/lbBOD5
1.20
b = Nitrogenous oxygen demand, 4.57 lbO2/lbNH3
4.57
a = (process water Kea of a new diffuser)/(clean water Kea of a new diffuser)
0.65
F = (process water Kea of a diffuser after a given time in service)/(KLa of a new diffuser in the same process water) = fouling factor
0.95
0 = 1.024
1.02
T = Process water temperature, C
18.00
0 = Kea/KLa20
0.95
�� = Pressure correction for C* — Pb/Ps
1.00
Ps = standard atmospheric pressure (14.7 psia)
14.70
= Temperature correction for C* = C*/C*20 = C*S/C*S20
1.04
_ (process water C*)/(clean water C*)
0.95
C*20 = steady state DO saturation concentration attained at infinite time for a given diffuser at 20 C and 1 atm, mg/I
9.08
C = Process water DO concentration, mg/I
2.00

WP = wire power consumption, hp
46
qs = standardized volumetric airflow rate, scfm
1171
%= actual airflow rate, acfm
1199
AOR = actual oxygen requirement, Ib/d
2029
SOTR = standard oxygen transfer rate, Ib/hr
4374
SOTE = standard oxygen transfer efficiency, function of depth, flux, and density, %
0.15
Q = Flow, MGD
0.50
Ta = blower inlet air temperature, degrees F
32
e = combined blower/motor efficiency
0.45
Pb = field atmosphere pressure, psia
14.50
Pd = blower discharge pressure, psig
4.79
BOD5 = BOD5 converted, mg/I
250.0
TKN =Raw Influent TKN converted, mg/I
40.0
a = Carbonaceous oxygen demand (ranges from 0.95 to 1.2, dependent on sludge age), lbO2/lbBOD5
1.20
b = Nitrogenous oxygen demand, 4.57 lbO2/lbNH3
4.57
a = (process water Kea of a new diffuser)/(clean water Kea of a new diffuser)
0.65
F = (process water Kea of a diffuser after a given time in service)/(KLa of a new diffuser in the same process water) = fouling factor
0.95
0 = 1.024
1.02
T = Process water temperature, C
12.00
0 = Kea/KLa20
0.83
�� = Pressure correction for C* — Pb/Ps
1.00
Ps = standard atmospheric pressure (14.7 psia)
14.70
= Temperature correction for C* = C*/C*20 = C*S/C*S20
1.19
_ (process water C*)/(clean water C*)
0.95
C*20 = steady state DO saturation concentration attained at infinite time for a given diffuser at 20 C and 1 atm, mg/I
9.08
C = Process water DO concentration, mg/I
2.00

WP = wire power consumption, hp
55
qs = standardized volumetric airflow rate, scfm
1225
%= actual airflow rate, acfm
1427
AOR = actual oxygen requirement, Ib/d
2029
SOTR = standard oxygen transfer rate, Ib/hr
4576
SOTE = standard oxygen transfer efficiency, function of depth, flux, and density, %
0.15
Q = Flow, MGD
0.50
Ta = blower inlet air temperature, degrees F
100
e = combined blower/motor efficiency
0.45
Pb = field atmosphere pressure, psia
14.50
Pd = blower discharge pressure, psig
4.79
BOD5 = BOD5 converted, mg/I
250.0
TKN =Raw Influent TKN converted, mg/I
40.0
a = Carbonaceous oxygen demand (ranges from 0.95 to 1.2, dependent on sludge age), lbO2/lbBOD5
1.20
b = Nitrogenous oxygen demand, 4.57 lbO2/lbNH3
4.57
a = (process water Kea of a new diffuser)/(clean water Kea of a new diffuser)
0.65
F = (process water Kea of a diffuser after a given time in service)/(KLa of a new diffuser in the same process water) = fouling factor
0.95
0 = 1.024
1.02
T = Process water temperature, C
23.00
0 = Kea/KLa20
1.07
�� = Pressure correction for C* — Pb/Ps
1.00
Ps = standard atmospheric pressure (14.7 psia)
14.70
= Temperature correction for C* = C*/C*20 = C*S/C*S20
0.94
_ (process water C*)/(clean water C*)
0.95
C*20 = steady state DO saturation concentration attained at infinite time for a given diffuser at 20 C and 1 atm, mg/I
9.08
C = Process water DO concentration, mg/I
2.00

Condition AOR (Ibs/d) Design DO (mg/1)
Low Load 1439 2
Design Flow - Warm 2029 2
Design Flow - cold 2029 2
Max. Load 3110 1
Basin Design
No. of Basins 3
Airflow Ranges
Low flow Design Flow - Warm Design Flow - Cold Max Load
856 1225 1171 1617 scfm
998 1427 1199 1885 acfm
Design pressure 4.788 psi
Tank SWD 9.75 ft
For 2 operating blowers For 3 operating blower
808 scfm each 539

scfm each

1.5 inches
feet
4.688 avg pres
0.074 psi
Sum of 4.762
Losses
Hose to diffuser
315 cfm
4 inches
feet
4.762 avg pres
0.403 psi
Sum of 5.165
Pipe
630 cfm
6 inches
feet '
5.165 avg pres
0.035 psi
Sum of 5.200
Pipe and Fittings
630 cfm
6 inches
feet
5.494 avg pres
0.033 psi
Sum of 5.528
Pipe and Fittings
t21101fes pres.767ings
Water Depth 9.5 ft
Diffuser Pressure Drop 1.75 ft
Sum 11.25 ft
Pressure Drop at Diffuser 4.688 psi
315 cfm 315 cfm 315 cfm
4 inches 4 inches 4 inches
_feet feet feet
4.762 avg pres 4.762 avg pres 4.762 avg pres
0.403 psi 0.403 psi 0.403 psi
Sum of 5.165 Sum of 5.165 Sum of 5.165
Losses Losses Losses
Pipe Pipe Pipe
630 cfm
Valve Losses 6 inches Va ve Losses
feet
inches 5.165 avg pres inches
Ps' 0.035 psi psi
Sum of 5.200
Sum of 5.494 Pipe and Fittings Sum of 5.462
Losses Losses
630 cfm
6 inches
feet
5.462 avg pres
0.033 psi
Sum of 5.496
Pipe and Fittings
1890 cfm
10 inches
_feet
5.512 avg pres
0.098 psi
Sum of 5.610
Losses
Pipe and Fittings
2520 cfm 1 1890 cfm 1 1 1260 cfm
10 inches 10 inches 10 inches
_feet feet feet
5.767 avg pres 5.815 avg pres S.S43 avg pres
0.048 psi 0.028 psi 0.013 psi
Sum of 5.815 Sum of 5.843 Sum of 5.856
Pipe and Fittings Pipe and Fittings Pipe and
Standby Duty Duty
Duty
630 cfm
6 inches
_feet
5856 avg pres
M2 psi
Sum of 5.919
ripe and
315 cfm 315 cfm 315 cfm 315 cfm
4 inches 4 inches 4 inches 4 inches
-feet feet feet feet
4.762 avg pres 4.762 avg pres 4.762 avg pres 4.762 avg pres
0.403 psi 0.403 psi 0.403 psi 0.403 psi
Sum of 5.165 Sum of 5.165 Sum of 5.165 Sum of 5.165
Losses Losses Losses Losses
AIM Ank
Pipe Pipe Pipe Pipe
630 cfm 630 cfm
6 inches Valve Losses 6 inches Valve Losses
feet feet
5.165 avg pres inches 5.165 avg pres inches
0.035 psi psi 0.035 psi psi
Sum of 5.200 Sum of 5.200
Pipe and Fittings Sum of 5.450 Pipe and Fittings Sum of 5.445
Losses Losses
630 cfm 630 cfm
6 inches 6 inches
feet feet
5.450 avg pres 5.445 avg pres
0.033 psi 0.033 psi
Sum of 5.484 Sum of 5.479
Pipe and Fittings Pipe and Fittings
1260 cfm
10 inches
_feet
5.481 avg pres
0.047 psi
Sum of 5.528
Losses
Pipe and Fittings
Each Blower
630 ACFM
550 SUM
j i630 cfm
10 inches
feet
5.479 avg pres
0.032 psi
Sum of
Losses 5.511
Pipe and Fittings

Operation mode: Variable speed - constant differential pressure
1
Project title
I ARA Rodachtalbucht
I Date
11/30/2018
2
Manufacturer / Typel
KAESER / DBS220L
I Editorl
T.Snead
Performance related components to put machine into operation
ElBlower drive motor 0 Non return valve OMachine controller
❑✓ Transmission (Belt, Gear, Coupling) El Throttle / Bypass valve OSensors
3
OFilter intake air 0 Sound enclosure OFrequency converter
OSilencer intake air 0 Cooling air ventilators OLine filter
OSilencer discharge air ❑ Circulating oil lubrication ❑ additional electric. auxilliaries
Rated data machine
4
Mains voltage [v]
460
Mains frequency [Hz]
60
Rated speed blower [rpm]
10140
Rated speed motor [rpm]
3600
Rated power motor [hp]
30
Nom. Efficiency motor K
91.7
Intake conditions of process air into machine (scope of components machine operation)
5
Intake pressure p, [psi]
1 14.4
lRelative humidity cp[%]
80
Intake temperature t91 [IF]
1 100
IVolume flow j1
scfm •
Performance data to ISO 1217 Annex E (scope of components machine operation)
Operation point
1 (Vi min)
2
3
4
5 ( Vl max )
Apa
psi
7
6
nblower block
rpm
3042
4817
6591
8366
10140
Vb
scfm
153
266
381
493
603
PC blowershaft
hp
6.0
9.8
13.8
18.1
22.6
Pd total machine
kW
6.0
9.2
12.6
16.2
19.9
Pe specific
kW/100scfm
3.92
3.46
3.31
3.29
3.30
e
Pspecific
7.00
6.00
5.00
E
7
0 4.00
0
3.00
2.00
1.00
0.00
0 100 200 300 400 500 600 700
scfm
a: Machine differential pressure, measured at in- and outlet (transfer point to process, e.g. compensator).
b: Air -mass flow at machine discharge, recalculated as discharge air volume flow at intake conditions [cfm] resp. in standard state [scfm] (14,7
psi, 687, 36 % r.H.). Tolerance on deviation of quoted to measured performance data in accordance to ISO 1217 Annex E for volume flow
related to intake conditions: ±5 % (50-500 cfm), ±4 % (> 500 cfm). V1 = FAD if inlet = ambient.
8
c: With consideration of the pressure losses from all flow limiting components of the machine.
d: Machine total power consumption of all relevant on line electrical operated auxilliaries in addition to the pressure losses of all flow limiting
machine components.
e: Tolerance on deviation of quoted to measured performance data in accordance to ISO 1217 Annex E for specific power: ± 6 % (50-500 cfm), ±
5 % (> 500 cfm).
Transparenter Vergleich
Leistungswerte Geblase 11/30/2018 KK/ M.J.

Calculation work point resp. customer design point
[ib 550 scfm
Result (calculated
with regression
curve!;
Types:
KAESER / DBS220L
KAESER / DB236C
nblower block
9284
3785
PC blower shaft
20.4
25.7
Pdtotal machine
18.1
22.4
pespecific
3.27
4.05
P61wer shaft
'nin-1
-)p
M
M/100scfm
30.0
25.0 -------------------------------------
20.0--------------------------------------------------------� •
15.0 •
10.0
I
5.0
0.0
0 100 200 300 400 500 600 700
scfm
Rotal machine
25.0
20.0
----------
------- -----------------------
---------------------- ------ - --
----------
15.0
—
!?
I
t
I
10.0
I
5.0
I
I
0 100 200 300 400 500 600 700
scfm
e
ppecific
7.00
6.00
5.00
E
N4.00------------------------ - ----
o
0
3.00 I
Y I
I
2.00 I
I
I
1.00
0.00 ' '
0 100 200 300 400 500 600 700
scfm
Transparenter Vergleich
Leistungswerte Geblase 11/30/2018 KK/ M.J.

Operation mode: Variable speed - constant differential pressure
1
Project title
I ARA Rodachtalbucht
I Date
11/30/2018
2
Manufacturer / Typel
KAESER / DB236C
I Editorl
T.Snead
Performance related components to put machine into operation
ElBlower drive motor ❑✓ Non return valve ❑✓ Machine controller
❑✓ Transmission (Belt, Gear, Coupling) ❑ Throttle / Bypass valve ❑� Sensors
3
❑✓ Filter intake air ❑✓ Sound enclosure ❑' Frequency converter
❑� Silencer intake air ❑� Cooling air ventilators ❑✓ Line filter
❑✓ Silencer discharge air ❑ Circulating oil lubrication ❑ additional electric. auxilliaries
Rated data machine
4
Mains voltage [v]
460
Mains frequency [Hz]
60
Rated speed blower [rpm]
3985
Rated speed motor [rpm]
3600
Rated power motor [hp]
40
Nom. Efficiency motor N
92.4
Intake conditions of process air into machine (scope of components machine operation)
5
Intake pressure p, [psi]
1 100.0
lRelative humidity cp[%]
80
Intake temperature t91 [7]
1 14.4
IVolume flow j1
scfm •
Performance data to ISO 1217 Annex E (scope of components machine operation)
Operation point
1 (Vi min)
2
3
4
5 ( Vl max )
Apa
mbar
7
nblower block
rpm
1196
1893
2590
3288
3985
6
Vb
scfm
123
238
353
468
583
PC blowershaft
hp
7.9
12.4
17.1
22.0
27.2
Pd total machine
kW
7.2
11.0
15.0
19.2
23.7
Pe specific
kW/100scfm
5.85
4.62
4.25
4.10
4.07
Pepecific
7.00
6.00
5.00
E
7
0 4.00
0
3.00
Y
2.00
1.00
0.00
0 100 200 300 400 500 600 700
scfm
a: Machine differential pressure, measured at in- and outlet (transfer point to process, e.g. compensator).
b: Air -mass flow at machine discharge, recalculated as discharge air volume flow at intake conditions [cfm] resp. in standard state [scfm] (14,7
psi, 687, 36 % r.H.). Tolerance on deviation of quoted to measured performance data in accordance to ISO 1217 Annex E for volume flow
related to intake conditions: ±5 % (50-500 cfm), ±4 % (> 500 cfm). V1 = FAD if inlet = ambient.
8
c: With consideration of the pressure losses from all flow limiting components of the machine.
d: Machine total power consumption of all relevant on line electrical operated auxilliaries in addition to the pressure losses of all flow limiting
machine components.
e: Tolerance on deviation of quoted to measured performance data in accordance to ISO 1217 Annex E for specific power: ± 6 % (50-500 cfm), ±
5 % (> 500 cfm).
Transparenter Vergleich
Leistungswerte Geblase 11/30/2018 KK/ M.J.

Calculaton of the annual work [kWh]
Operational hours per year 8650 h max. 8760 h per year
Volume flow min. 153 scfm Apply normal distribution to
from - to: max. 583 scfm GAUSS:»GAUSS«
Energy cost (el. tariff) 0.1 $/kWh currency0
Calculation of the annual work in the following with: Electric total input power machine
Types: KAESER / DBS220L KAESER / DB236C
Volume flow Time P Machine W electric P Machine W electric
scfm h kW kWh kW kWh
153
483
6.0
2901
8.2
3946
261
2109
9.0
19018
11.8
24782
368
3467
12.2
42371
15.5
53840
476
2109
15.6
32940
19.5
41143
583
1 483
1 19.2
1 9276
1 23.7
1 11437
8650 h
Total [kWh] per year: 106506 135148
Energy cost per year [$]: 1 10,651,- 13,515,-
W electric
60000
50000
40000
s
30000
Y
20000
10000
0
153 261 368 476
scfm
KAESER / DBS220L ■ KAESER / DB236C
Normal density to Gauss applied on time over volume flow
Time
583
4000
■
3000
h 2000 • •
1000
0
0 100 200 300 400 500 600 700
scfm
Transparenter Vergleich
Leistungswerte Geblase 11/30/2018 KK/ M.J.

Installation Data Sheet - Screw Blower
Document Number: TLBIDS-032
Version: 1.2
Revision Date: 06/29/17
Package Model DBS 220 SFC (L & M)
Electrical Data
-----
-----50
Horsepower -------------------------------------- 20----- ----- 25 ---------30
----- 40-----
-----
Voltage (3ph/60Hz)
460
460
460
460
460
Package FLA +/- 10%
36.5
33.2
37.8
52.2
61.6
Disconnect Fuse [Amp]
50
50
63
80
100
Wire Size (75°C or higher) [AWG]
1 x 8
1 x 8
1 x 8
1 x 6
1 x 4
Motor data
Insulation Class — — — — — — — — — — — — — — — — — --F — — — — F— — — — — — F — —
— — F — — —
— — --F — —
Enclosure Type
TEFC
TEFC
TEFC
TEFC
TEFC
Motor Rated Current +/- 10%
37
33
38
52
62
Nominal Efficiency
91.0
91.7
91.7
92.4
93.6
Notes:
1. Disconnect Fuses should be of dual element time delay design
2. Fuse and wire sizes determined in accordance to NEC 240.6, 430.52 and tables 250.122, 430.250, 430.252.
3. Breaker should be suitable for a heavy duty starting load and of inverse time delay design that complies to regulations outlines in
NEC 430.52
4. SFC Units come standard at 460 volts.
5. Ground wire size should beequal to conductor size.
SFC Operating Modes
External Speed Control
The speed of the drive motor is controlled via an externally -supplied analog signal within the programmed speed range between n-min and n-max
in accordance to machine
design
Fixed Speed
The speed of the drive motor is controlled by an adjustable value between 0% and 100% of machine speed which is set at the Sigma Control 2
Pressure Regulation
When machine runs in pressure regulation mode, the frequency converter compensates for deviations between the set point pressure and the actual pressure by changing the speed of the
drive motor. The variation in speed determines the air delivery of the machine to match the air consumption of system while maintaining he system pressure so long as the unit is maintained
within the control range of the machine (Vmin and Vmax)
Oil System Data _ — - — -
— - — - — - — - — - — - —
- — - — - — - — - — - —
DriveEnd Ca acit— t---------------------------------------------------------- 0.97
Gear End Capacity t.
1.1
Oil Type (Synthetic)
G-680
Working Pressure
EB 380S L SFC r Continued working pressures below 2.2 psig
are not permitted
EB 380S M SFC pr
Continued working pressures below 4.4 psig
are not permitted

Package Connections — — — — — — — — — — — —
- — ----- ---
— — —
— — — — — — — — — — — —
— - - - - - -
— — —
- -50 - -
HP
20- 25 30 40-
Width in.
43 5/8
43 5/8
43 5/8
43 5/8
43 5/8
Depth in.
591/8
591/8
591/8
591/8
591/8
Height in.
65 3/4
65 3/4
65 3/4
65 3/4
65 3/4
Floors . ft.
18
18
18
18
18
Weight lb.
1753
1768
1839
1962
2006
Connection Size in.
4
4
4
4
4
Type
Pipe
Pipe
Pipe
Pipe
Pipe
General Information
---------------------------------------------------------
-----------------------------------------------
Floating felay Contacts
Ambient and Intake Conditions
------------------------------------------------------------
Contacts:
Permissible ambient temperature[°F]* +37-+113
X12: 1 and 2 Operation
Permissible suction temperature [°F]* +5 -+113
X12: 3 and 4 Ready for operation
Relative humidity [%] 0 - 80
X12: 5 and 6 Group Alarm
Maximum elevation [ft.asl]* 3280
X12: 7 and 8 Group Warning
*contact Kaeser about deviations in temperature or
altitude
Remote On/Off
—-----------------------------------------------------
-— External Alarm
Contacts (not floating): powered 24 VDC
Contacts (not floating): powered 24 VDC
-X15: 5 and 6
DI: 1.08
Function:
Function:
from open to closed: machine switches on
the machine will switch off in the event of this external fault
from closed to open: Machine switches off
Ventilation of Blower Room
- — - — - — -
-
— - — - — - — - — - — - — - — - — - — - — - —
AirInlet O enin
_
----------------------------- 2_.9 s -ft - - - - - - - - - - - - - - -
- - - - - - - - - - - - --
Cooling Fan Capacity forced ventilation
1729 cfm
Max _Heat Rejection-----------------------------------------------
----------------------------------------------------- 12,988 BTU/HR
- - - --------------------------------------------------------------------------
Ventilation values based on 668cfm @ 15 psig OP, 50Hp and ambient inlet. Max. room temp. = 113° F and cooling air temp = 95° F. Discharge piping length = 5ft.
It is recommended to extract the exhaust air from the upper third of the room as this
is where the heat collects. The room ventilation openings should be arranged that the
current of cooling air flowing through the room passes over the blower inlet and
exhaust ports and, if possible, should leave no stagnant air in the room. (A thermal
I
short circuit must be avoided, i.e. discharged cooling air must not find its way to the
coaling air inlet.)
The blower must not be positioned so near to a wall that the inflow of cooling air is
obstructed.
Pipework should be insulated against heat emission.
If the blower station is located in the middle of a large hall its exhaust air can be
extracted by means of a duct positioned above the exhaust port (illustrated in broken
lines).

Dimensions shown in inches
: Center of gravity
Position marginally dependent on design
SFC / STC
Model
Nominal power
A / A***
X*
Y.
Z*
Weight **
20 hp
29 1/2 /
29 15/16
29 1/2 /
27 9/16 /
1753 / 1722 lb
25 hp
29 15/16 /
29 15/16
— 1768 / 1733 lb
28 3/4
29 1/2
30 hp
30 5/16 /
30 11/16
30 5/16 /
29 1/2
28 3/8 /
30 5/16
— 1839 / 1803 lb
DBS 220
2 1/8 /
1 3/4
40 hp
30 11/16 /
31 1/2
31 1/8 /
30 5/16
29 1/8 /
31 1/8
_ 1962 / 1925 lb
50 hp
31 1/8 /
317/8
31 1/2 /
3011/16
29 1/2 /
31 1/2
— 2006 / 1969 lb
* (approximate dimensions)
** Standard values, weight may deviate according to
motor manufacturer
*** Dimensions without check valve
Removable access panel
Inlet: intake air
(fl '
Inlet: ,
cooling air
ti 5 1/2
Z 1
10114 M8 3x 01 15/16
��
max.
min.
Cable bushing
Foundation plan
For floor mounting:
6x 0 3 15/16
4x 03/8
—%--
------- -
I I I II
41
(0 I�
N
C\J M
II I1 I 1II
---- -- tiL
C' 13 3/4 (21 7/8 )
ti 33 7/16
1 53 1 /8 1
d'2 R/S2
Outlet: cooling air
c18� Q ti
19T
M
LO
CO
}
Inlet:
cooling air
7 1/2
26 3/4
32 11/16
•
access panel
3 13/16
co
N

EDI FLEXAIR° Operating Pressure
Magnum EPDM Micro 1/2m
30
25
20
15
a
0
10
5
0
0 1 2 3 4 5 6 7 8
Flow Rate (scfm/diffuser)
9
1.01-0
10