WQ0028785_Application (ATC)_20190823

�z
900 Ridgefield Drive
Suite 350
Raleigh, NC 27609
Phone [phone]
Fax [phone]
To: NC DEQ / Div of Water Resources / Water
Quality Permitting
NPDES Complex Permitting
1617 Mail Service Center
Raleigh, NC 27699-1628
919-791-4200
Attention: Mr Bing Bai, Ph.D., El
LETTER OF
TRANSMITTAL
Sheet: 1
of 1 Total Pages:
Date:
8/23/2019
Job No.:
17125
Project:
Wildwood Green W WTP -
Nitrogen
Removal Improvements
We are sending you: VIA: In -House Circulation
❑ Plans ❑ Specifications ❑ Samples ❑ US Mail ® Messenger (KN)
❑ Shop Drawings ❑ Prints ® Application ❑ Overnight
❑ Copy ortcucr ❑ Change order ❑ FAX
These are transmitted as checked below:
® For approval
❑ Approved
❑ For your use
❑ Approved as noted
❑ As requested
❑ Disapproved
Remarks:
❑ Please acknowledge receipt ofthis material
❑ Acknowledgment or receipt not required
❑ For review and comment
Please feel free to contact me with any questions or comments at [e-mail] or 919-249-2627.
Copy: Michael Melton (Aqua NC)
Joseph Pearce (Aqua NC)
(J'encfosures are nm as noted. Rind/v no(ili as ai once
Rummel, Klepper & Kahl, LLP
Signature:
Kevin Nash, PE
Manager, Wastewater

AQUA.]Wildwood Green WWTP
August 23, 2019
Mr. Bing Bai, Ph.D., EI
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
Wildwood Green WWTP— Nitrogen Removal Improvements
Dear Mr. Bai:
This letter will serve as the cover letter for the Authorization to Construct Application.
Aqua and RK&K have conducted pilot improvements to the Wildwood Green WWTP to reduce the total
nitrogen in the effluent. The pilot improvements included two process changes to the activated sludge
system:
1. Addition of mixers to the aeration basins to maintain mixed liquor suspension during anoxic
phases of the cyclic aeration process. Due to the configuration of the basins a total of four mixers
were installed, each with a rated power of 3HP. The mixers are pontoon mixers, floating on the
surface.
2. Connection of a dedicated blower for the clarifier return activated sludge (RAS) and scum air-lift
pumps to maintain sludge and scum withdrawal from the clarifiers continuously. The blower used
was previously abandoned in place and repurposed for this application.
3. Addition of dissolved oxygen probes in each of the two aeration basins to monitor the dissolved
oxygen during aerated and anoxic periods of the cyclically aerated basins.
Included in this application package are the following:
1. Authorization to Construct Application
2. NPDES Permit
3, Schematic plan of the improvements
4. Cutsheet of the mixers installed
The nature of the improvements will allow for the pilot improvements to extend into the full scale
operation with no additional construction required. of the expansion will start upon receiving the
Authorization to Construct and Sewer System Extension permits. The construction duration is expected
to be approximately 8 -months from the notice to proceed granting the general contractor authorization
to begin construction.
RK K Pagel AQUA NORTH CAROLINA, INC.

AQUA. Wildwood Green WWTP
Please feel free to contact me with any questions or concerns at 919-878-9560 or [e-mail].
Sincerely,
Rummel, Klepper & Kahl, LLP
,KeV1n�, PE
CC:
Michael Melton (Aqua North Carolina)
Joseph Pearce (Aqua North Carolina)
Kelly Duffy (RK&K)
RK K Page 2 A UA

Wuter Resources
4N/IP011M'N I Pl 01.111, T
State of North Carolina
Department of Environmental Quality
Division of Water Resources
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.
For more information, visit the Division of Water Resources web site at: https://deg.nc.gov/about/divisions/water-resources/water-
resou rtes -perm its/wastewater-branch/nodes-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 (Aqua America)
Signature authority's name per 15A NCAC 02T.0106(b)
Michael Melton
Signature authority's title
Engineering Manager
Complete mailing address
4162 Sinclair Street, Denver, NC 28037
Telephone number
704-489-9404
Email address
[e-mail]
B. PROFESSIONAL ENGINEER
Professional Engineers name
Kevin Nash, PE
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
EN VIRONMEN I AL OUAL ry
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
Telephone number 919-653-7341
Email address [e-mail]
C. NPDES PERMIT
NPDES Permit number
NCO063614
Current Permitted flow (MGD)— include permit
flow phases if applicable
0.300 -MGD
D. PROJECT DESCRIPTION
Provide a brief description of the project: Add mixing to the reactors to maintain MLSS suspension during anoxic periods of the
cyclically aerated basins. Provide a dedicated air source for the air-lift RAS system to maintain sludge return during anoxic
periods. Improvements were pilot tested and the facility is now in compliance.
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 NPOES permit forthis 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.
Engineering Plans
❑ Per 15A NCAC 02T .0504(ch1j, submit one set of detailed plans that have been signed, sealed and dated by a North Carolina
Licensed Professional Engineer.
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 2

State of North Carolina
Kf
',. Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14)
❑ 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 M 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
❑ Electrical M Not Applicable
❑ Instrumentation/Controls ® Not Applicable
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 3

Water Resources
ENVIRONMENTAL QUALITY
❑ Architectural
❑ Building Mechanical
❑ Building Plumbing
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
® Not Applicable
® Not Applicable
® 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: The improvements
planned did and will not require any existing processes be changed. The floating mixers were dropped in to the basin by crane
without the need for interruption.
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 4.6.2 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

J.
�i
Wu ret Resourcr>
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
z
NCDOT Encroachment Agreement
x
Railroad Encroachment Agreement
z
Other:
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
residualsdisposal/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.
Z Not Applicable.
Application for Authorization to Construct Permit (FORM ATC -12-14) Page

Wo ter Resource s
ENY'PONMLNI IL CU n:.i I
State of North Carolina
Department of Environmental Quality
Division of Water Resources
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
0.100 MGD
Current NPDES Permit Limit
0.100 MGD
Current Annual Average
(past 12 months)
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
U; Division of Water Resources
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 133-3 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:
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: Minor improvements to the process were pilot tested
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
Average (past
Engineering
Engineering
Design Effluent
12 months) if
Calculations
Calculations
Concentration and/or
NPDES Permit Limits
Parameter
Available
(Section 3.H])
[Section 3.H])
Load
(monthly average)
Ammonia Nitrogen
mg/L Summer
mg/L Summer
(NH3-N)
mg/L
mg/L
Ib/day
mg/L Winter
mg/L Winter
Biochemical
mg/L Summer
mg/L Summer
Oxygen Demand
mg/L
mg/L
Ib/day
(BODS)
mg/L Winter
mg/L Winter
Fecal Coliform
per 100 mL
p
per 100 mL
rite
(N -N+
mg/L
mg/L
l
FNitrogen
mg/L
mg/L
mg/L
n
Ib/year
Ib/year
mg/L
mg/L
Total Phosphorus
mg/L
mg/L
Ib/day
Ib/year
Ib/year
Total Suspended
Solids (TSS)
mg/L
mg/L
Ib/day
mg/L
mg/L
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: Minor improvements to the process were pilot tested
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 7

btiote, Res:%ul"i es
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(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)la). 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. Isthis 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): N/A to this oroiect
8. Per 15A NCAC02T.0505(0), the public shall be prohibited from access to the wastewater treatment facilities. Explain how
the design complies with this requirement: site is fenced
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. of
Plan Sheet
Specification
Calculations
Treatment Unit
Units
Type
Size per Unit
Reference
Reference
Provided?
(Yes or No)
Manual Bar Screen
MGD at peak hourly flow
Mechanical Bar
Screen
MGD at peak hourly flow
Grit Removal
MGD at peak hourly flow
Flow Equalization
--
gallons
Primary Clarifier
Circular
ft diameter; ft sidewater
depth
Primary Clarifier
Rectangular
square feet; ft side
water depth
Other
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 8

Water R
t`I VIIIUNM-�.
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
2. SECONDARY TREATMENT (BIOLOGICAL REACTORS AND CLARIFIERS) (i,e., biological and chemical processes to remove
organics and nutrients)
Treatment Unit
No. of
Type
Size per Unit
Plan Sheet
Specification
Calculations
Provided?
Units
Reference
Reference
(Yes or No)
Aerobic Zones/
Circular
ft diameter; ft
Tanks
(Parallel; in
gallons
Anoxic Zones/
Rectangular
square feet; ft
Tanks
gallons
Anaerobic
(Gas;
square feet
Zones/Tanks
tablet; liquid)
gallons
Sequencing Batch
Reactor (SBR)
gallons
Membrane
--
gallons
Bioreactor (MBR)
gallons
Secondary Clarifier
Circular
ft diameter; ftside
water depth
Secondary Clarifier
Rectangular
square feet; ft
side water depth
Other
TERTIARY TREATMENT
Unit
No. of
Type
Size per Unit
Plan Sheet
Specificationra7an)sreatment
Calculations
Provided?
Units
Reference
ReferenceUnits
Tertiary Clarifier
Circular
ft diameter; ft
Ultraviolet Light
(Parallel; in
side water depth
Tertiary Clarifier
Rectangular
square feet; ft
side water depth
Tertiary Filter
(Gas;
square feet
Tertiary Membrane
tablet; liquid)
tank/unit
Filtration
square feet
Post -Treatment
Flow Equalization
--
gallons
Post -Aeration
gallons
Other
4. DISINFECTION
Treatment Unit
No. of
Type
Size per Unit
Plan Sheet
Specification
Calculations
Provided?
Units
Reference
Reference
(Yes or No)
gal/day per bank at
Ultraviolet Light
(Parallel; in
peak hourly flow;
series)
number of 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

IA'u ter Resources
X14 V IPe NNLN t AL QU,IN 't v
State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
Dechlorination
No. of
(Gas;
gallons of contact
Plan Sheet
Specification
Calculations
Provided?
GPM
Units
tablet; liquid)
tank/unit
Reference
Reference
5. RESIDUALS TREATMENT
Treatment Unit
No. of
Type
Site per Unit
Plan Sheet
Specification
Calculations
Provided?
GPM
Units
MLSS Suspension
Floating
Reference
Reference
(Yes or No)
Gravity Thickening
square feet; ft side
Tank
water depth
Mechanical
Thickening/
dry Ib/hour
Dewatering
Aerobic Digestion
gallons
Anaerobic
Digestion
gallons
Composting
dry Ib/hour
Drying
dry Ib/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
TDH
MLSS Suspension
Floating
3
7. MIXERS
Location
No. of
Mixers
Purpose
Type
Power of
each Mixer
(HP)
Plan Sheet
Reference
Specification
Reference
Aeration Basin
4
MLSS Suspension
Floating
3
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 10

Warer Resources
LN V IRR LIMEN rAL GQALI t t
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
Capacity of
Type each Blower
(CFM)
Plan Sheet
Reference
Specification.
Reference
Treatment/Storage
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
[K Yes
❑ No
Surface waters (streams— intermittent and perennial, perennial
50 ft
®Yes
❑ No
waterbodies, and wetlands)
Any well with exception of monitoring wells
9. ODOR CONTROL
Location
No. of
Units
Purpose
Type
Plan Sheet
Reference
Specification
Reference
Treatment/Storage
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
1. 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:
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 11
Minimum Distance
Is Minimum Distance
Setback Parameter
Required from Nearest
Requirement met by the
Design? If "No", identify
Treatment/Storage
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
[K Yes
❑ No
Surface waters (streams— intermittent and perennial, perennial
50 ft
®Yes
❑ No
waterbodies, and wetlands)
Any well with exception of monitoring wells
100 ft
® Yes
❑ No
Any property line
50 ft
Yes
❑ No
2. Have any setback waivers been obtained per 15A NCAC 02T .0506(d)? ❑.Yes or ® No. If yes, have these waivers been
written, notarized and signed by all parties involved and recorded with the. County Register of Deeds? ❑ Yes or ❑ No. If
no, provide an explanation:
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 11

State of North Carolina
N ra_ Department of Environmental Quality
Division of Water Resources
Water Resources
ENVMQNMEMI^L 00¢- I 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 Wildwood Green WWTP— Nitrogen Removal Improvements
(Facility and Project Name)
was prepared under my direct supervisory control and to the best of my knowledge is accurate, complete and consistent
with the information supplied in the engineering plans, specifications, calculations, and all other supporting
documentation for this project. I further attest that to the best of my knowledge the proposed design has been
prepared in accordance with all applicable regulations and statutes, 15 NCAC 02H. 0100, 15A NCAC 02T North Carolina
General Statute 133-3, North Carolina General Statute 143-215.1, and Division of Water Resources Minimum Design
Criteria for NPDES Wastewater Treatment Facilities, and this Authorization to Construct Permit Application, except as
provided for and explained in Section 4.B.1 of this Application. I understand that the Division of Water Resources'
issuance of the Authorization to Construct Permit may be based solely upon this Certification and that the Division may
waive the technical review of the plans, specifications, calculations and other supporting documentation provided in this
application package. I further understand that the application package may be subject to a future audit by the Division.
Although certain portions of this submittal package may have been prepared, signed and sealed by other professionals
licensed in North Carolina, inclusion of these materials under my signature and seal signifies that I have reviewed the
materials and have determined that the materials are consistent with the project design.
I understand that in accordance with General Statutes 143-215.6A and 143-215.613, 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:
�tiAcA
FESS,`O
QQ-
^SEAI
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 12

State of North Carolina
Department of Environmental Quality
Division of Water Resources
APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC -12-14)
SECTION 6: APPLICATION CERTIFICATION BY APPLICANT
Applicant's Certification per ISA NCAC 02T .0106(b):
1. � I VV IL i attest that this application package for an Authorization to Construct
(Typed Name of Signa ure uthority a�d TYfe)
for the Wildwood Green W WTP – Nitrogen Removal Improvements
(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, 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
this application package. I further understand that the application package may be subject to a future audit.
I understand that in accordance with General Statutes 143-215.6A and 143-215.613 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.
II �
Signature: Y ( L, Date: Cyl 221J0Q —
THE COMPLETED APPLICATION AND SUPPORTING INFORMATION SHALL BE SUBMITTED TO:
NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES/NPDES
By U.S. Postal Service By Courier/Special Delivery:
1617 MAIL SERVICE CENTER 512 N. SALISBURY STREET, 9TH FLOOR
RALEIGH, NORTH CAROLINA 27699-1617 RALEIGH, NORTH CAROLINA 27604
TELEPHONE NUMBER: [phone]
Application for Authorization to Construct Permit (FORM ATC -12-14) Page 13

FINAL DRAWING FOR REVIEW
PURPOSES ONLY -NOT RELEASED FOR
CONSTRUCTION
CA //
SEAL
45
-,yF• •GINE ..•s�,,.�
fz#c fc
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 DA TE: 12-3I-2019
SCALE: AS SHOWN
DATE: JUNE 2019
DESIGNED: KWN, CC
DRAWN: KWN
CHECKED: KCD
iarallotl
1. PILOT PURPOSE:
1.1. TO INCREASE MIXING IN THE REACTORS DURING ANOXIC PERIODS
FACILITATING DENITRIFICATION TO MEET THE EFFLUENT TOTAL NITROGEN
LIMITS.
SED MIXER 1.2. TO DECOUPLE THE RETURN ACTIVATED SLUDGE FROM THE MAIN AERATION
IF 4) BLOWERS TO ALLOW FOR SLUDGE RETURN DURING ANOXIC PERIODS.
2. MIXERS INSTALLED IN THE REACTOR TO BE FLOATING MIXERS, MOORED IN PLACE
ON THE SURFACE WITH SS CABLE.
3. MIXERS TO OPERATE ON A TIMER, AND ONLY WHEN THE MAIN AERATION BLOWERS
ARE NOT OPERATING.
4. AIRLIFT BLOWER TO PROVIDE AIR FOR RETURN ACTIVATED SLUDGE.
5. AIRLIFT BLOWER TO PROVIDE AIR FOR CLARIFIER SCUM REMOVAL (NOT PICTURED).
6. MAIN AERATION BLOWERS TO SERVE AS BACK-UP TO THE PROPOSED AIRLIFT
PUMP, PROVIDING REDUNDANCY.
WILDWOOD GREEN WWTP
MIXER PILET
PLAN
DRAWING
G-1
SHEET 1 OF 1
m
F_
U
Z
w

0
NOTES:
Z1\ APPROXIMATE OPERATING WATER LEVEL.
A THE FLOAT WILL BE FILLED WITH TWO COMPONENT, CLOSED CELL,
POLYURETHANE FOAM (APPROX. 2 LBS. PER CUBIC FOOT DENSITY).
A THE FLOAT MOORING ANCHOR POINTS WILL BE 316 STAINLESS STEEL WITH A
QUANTITY OF SIX (6) APPLICABLE FOR A THREE (3) OR FOUR (4) POINT MOORING
SYSTEM.
A4. MOTOR SPECIFICATIONS: TEFC, 1.15 SERVICE FACTOR, CLASS -F INSULATION,
CONTINUOUS DUTY, NEMA DESIGN LETTER -B, NONHYGROSCOPIC WINDINGS,
CORROSION RESISTANT PAINT, ONE-PIECE 17-4 PH STN. STL. SHAFT.
A5. THESE FASTENERS ARE TO BE SAFETY WIRED IN PLACE.
6. POWER SECTION INCLUDES ITEMS: 1,2,3,7,8,9,10,11,12
7. BALANCING: THE ENTIRE ROTATING ASSEMBLY INCLUDING THE MOTOR ROTOR,
SHAFT AND IMPELLER SHALL BE DYNAMICALLY BALANCED TO WITHIN 2.0 MILS
PEAK -TO -PEAK HORIZONTAL DISPLACEMENT MEASURED AT THE UPPER AND
LOWER MOTOR BEARINGS. MEASUREMENTS SHALL BE TAKEN AT FREQUENCY
EQUIVALENT TO THE MOTOR RPM WITH THE MOTOR IN A VERTICAL, SHAFT DOWN
POSITION AND WITH THE MOTOR OR ENTIRE POWER SECTION MOUNTED ON
RESILIENT PADS.
8. THE NOMINAL UNIT WEIGHT IS 412 POUNDS.
9. THE CALCULATED RESERVE BUOYANCY IS 830 POUNDS BASED ON WEIGHTS OF
STANDARD UNIT SPECIFICATIONS.
COMPRESSION FITTING WILL BE SUPPLIED ONLY IF THE UNIT IS PROVIDED WITH
ELECTRICAL CABLE FACTORY INSTALLED.
18"
MOORING POST (3)__j
45"
CENTER OF MIXER
MOORING POST
LOCATION DETAIL 22 1/2„
O OL�
39"
78"
TOP VIEW
1 9 1 6 1 1 SETSCREW 316 STN. STL. I
BOLT, MOTOR 316 STN. STL.
MOTOR
PART NUMBER
DESCRIPTION
DO NOT SCALE
DRAWING
AQUA -AER(
SYSTEMS,,
IRN BV: JAK
ogre:
CIQ)BY:
ACT WT:
sDALE: NOT TO SCALE
NANE:
MIXER ASSEMBLY
WITH RESTRAINED
MOORING
sINIUR:
REP:
UNLESS OTHERWISE SPECIFIED
DEC ­THREE P-E
-
HPSRE: 1 HP
— FSS
8HEET 1 OF 1
DWG NO.: 2801987
REVISION

Digital Controller SC4200c Applications
• Wastewater
The next generation controller
t 7
PROGNOSYSO
READY
Remote access to online system data anytime, anywhere.
Data Access from Anywhere Fast and Intuitive Operation
Get easy access to crucial information, helping you manage Intuitive menu options allow you to calibrate your instruments
your process and be proactive in your maintenance. quickly — helping you to easily set up your systems and
optimize your processes. Using any Internet -enabled device,
Anytime. Anywhere. this can be done from wherever you are.
Always at a Glance: Measurement and
Sensor Health
Be confident of your sensor health and measurement results
with easy to understand color -coded LEDs and remote
diagnostics providing you with actionable information
including errors and warnings.

2 Digital Controller SC4200c
Technical Data*
Description
Dimensions
Weight
Enclosure Rating
Operating Temperature
Range
Storage Conditions
Altitude
Installation Category
Pollution Degree
Protection Class
Power Requirements
(Voltage)
Power Requirements
(Hz)
Measurements
Relays
Output
Communication
Capabilities
www.hach.com
Microprocessor -controlled and
menu -driven controller that
operates the sensor.
'/2 DIN -144x144x 192 mm
(5.7 x 5.7 x 7.6 in.)
3.7 Ib (controller only, w/o modules)
NEMA 4X/IP66 metal enclosure
with a corrosion -resistant finish
LAN version: -
20 -60°C( -4-140°F)
Cellular version:
-20 - 55 °C (-4 - 131 °F)
-20 - 70 °C (-4 - 158 °F), 0 - 95%
relative humidity, non -condensing
2000 m (6562 ft) maximum
Category II
2
I, connected to protective earth
100 - 240 VAC
50/60 Hz
Two device digital SC connectors
High voltage:
Two relays (SPDT)
Maximum switching voltage:
250 VAC
Maximum switching current:
5 A (resistive only load)
Maximum switching power:
1250 VA, 125 W (resistive only load)
Wire gauge:
0.75 to 2.5 mm2 (18 to 12 AWG)
Low voltage:
Four relays on each low voltage
relay module
Five 4-20 mA analog outputs on
each analog output module
Profibus DPV1 card
Network Connectivity LAN version: Two Ethernet
'Subject to change without notice.
connectors (10/100 Mbps), switch
function, M12 female D -coding
connector.
Cellular version: SIM card holder
(3G/4G).
The type of connection is
dependent on controller
configuration.
USB Port
Used for data download and
software upload. The controller
records approximately 20,000 data
points for each connected sensor.
Compliance
CE approved (with all sensor types).
Certifications
Listed for use in general locations
to UL and CSA safety standards by
ETL (with all sensor types).
Certain AC mains powered
models are listed for use in general
safety locations to UL and CSA
safety standards by Underwriters
Laboratories (with all sensor types).
Warranty
1 year
Compatible Network
GSM 3G/4G (e.g. AT&T, T -Mobile,
Technologies
Rogers, Vodafone etc.)
CDMA (e.g. Verizon)
Compatible
Ammonium: Amtax sc, AN -ISE sc,
Instruments
A -ISE sc
Nitrate: Nitratax sc, N -ISE sc
Phosphate: Phosphax sc
Organics: UVAS sc
pH: pHD sc
Conductivity: 3798-S sc
Dissolved Oxygen: LDO 2 sc
Suspended Solids: Solitax sc
Sludge Level: Sonatax sc
'Subject to change without notice.

Digital Controller SC4200c 3
Dimensions
Door Opening Details
Panel mounting dimensions
6.35 [0,250
Top and bottom views
3/4" to 2-1/2" Vertical / Horisontal Pipe
www.hach.com

4 Digital Controller SC4200c
Order Information
Controller
LXV524.99.01120 SC4200c Controller, North American Cellular Modem, mA out,
2 digital Sensors, w/o plug
LXV524.99.01110 SC4200c Controller, North American Cellular Modem, mA out,
1 digital Sensor, w/o plug
LXV524.99.01720 SC4200c Controller, North American Cellular Modem, Profibus,
2 digital Sensors, w/o plug
LXV524.99.11120 SC4200c Controller, North American Cellular Modem, mA out,
2 digital Sensors, with plug
Other configurations are available. Please contact Hach Technical Support
or your Hach representative.
Accessories
USB 2.0 Ethernet -Adapter for SC Service Port
LXZ524.99.00006
SC4x00c mA output module, 5 outputs
LXZ524.99.00007
SC4x00c Profibus DP network module
LXZ524.99.00008
SC4x00c Relay module, 4 low voltage relays
LXZ524.99.00013
Holder for tablets/mobiles
LXZ524.99.00004
UV protection screen
LXZ524.99.00005 UV protection screen with sunroof
LZY472-01
USB 2.0 Ethernet -Adapter for SC Service Port
LZV791
Memory -Stick (USB)
LXZ524.99.00033
Sunroof visor
LXZ524.99.00037
Sunroof
LOV155.99.00012
Power box with power connection cable
LOV155.99.00002
Power box without power connection cable
Be confident with Hach Service
Start-Up/Commissioning:
Our service technicians visit your site and setup instrumentation, provide basic
end-user training on operations and maintenance, and validate settings and
performance to get you started.
Service Agreement:
Hach provides on-site and in -factory repair, preventive maintenance, and calibration
programs for your instruments to ensure reliability and instrument up -time. We have
services to fit your specific needs.
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Hach World Headquarters: Loveland, Colorado USA
United States: 800-227-4224 tel [phone] fax orders(ahach.com
Outside United States: 970-669-3050 tel [phone] fax int(ahach.com
hach.com
Printed in U.S.A.
©Hach Company, 2017. All rights reserved.
In the interest of improving and updating its equipment, Hach Company reserves the right to alter specifications to equipment at any time.

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