WQ0003299_More Information Received_20240909

Initial Review
Reviewer
nathaniel.thornburg
Is this submittal an application? (Excluding additional information.) *
Yes No
If not an application what is the submittal type?* Annual Report
Residual Annual Report
Additional Information
Other
Permit Number (IR) * WQ0003299
Applicant/Permittee Town of Seaboard
Email Notifications
Does this need review by the hydrogeologist? * Yes No
Regional Office
CO Reviewer
Admin Reviewer

Submittal Form
Project Contact Information
Please provide information on the person to be contacted by NDB Staff regarding electronic submittal, confirmation of receipt, and other correspondence.
...................................................................................................................................................................................................................................................................................... ... ... ... ... ... .. ... ... ... ... ..
Name* Cecil Madden
Email Address*
[e-mail]
Project Information
.........................
Application/Document Type*
New (Fee Required)
Modification - Major (Fee Required)
Renewal with Major Modification (Fee
Required)
Annual Report
Additional Information
Other
Phone Number*
9197367630
Modification - Minor
Renewal
GW-59, NDMR, NDMLR, NDAR-1,
N DAR-2
Residual Annual Report
Change of Ownership
We no longer accept these monitoring reports through this portal. Please click on the link below and it will take you to the correct form.
https://edoes.deq.nc.gov/Forms/NonDischarge_Monitoring_Report
Permit Type:*
Wastewater Irrigation
High -Rate Infiltration
Other Wastewater
Reclaimed Water
Closed -Loop Recycle
Residuals
Single -Family Residence Wastewater
Other
Irrigation
Permit Number:*
WQ0003299
Has Current Existing permit number
Applicant/Permittee Address*
P.O. Box 327, Seaboard, NC 27876
Facility Name*
Town of Seaboard WWTF
Please provide comments/notes on your current submittal below.
Attached are responses to your Additional Information Request No. 1.
The attachment includes the following:
1. Point for point response.
2. Updated Application Form
3. Wastewater Chemical Analysis &
4. Supplement to the Design Basis addressing Storage volume Calculations and Irrigation Pumps Design
Regards,
Cecil G. Madden, Jr.
At this time, paper copies are no longer required. If you have any questions about what is required, please contact Nathaniel Thornburg
at [e-mail].
Please attach all information required or requested for this submittal to be reviewed here.
(Application Form, Engineering Plans, Specifications, Calculations, Etc.)
Town of Seaboard WWTP Response to Add Info No 1.pdf 17.82MB
Upload only 1 PDF document (less than 250 MB). Multiple documents must be combined into one PDF file unless file is larger
than upload limit.
* By checking this box, I acknowledge that I understand the application will not be accepted for pre -review until the fee (if required) has
been received by the Non -Discharge Branch. Application fees must be submitted by check or money order and made payable to the
North Carolina Department of Environmental Quality (NCDEQ). I also confirm that the uploaded document is a single PDF with all parts
of the application in correct order (as specified by the application).
Mail payment to:
NCDEQ — Division of Water Resources
Attn: Non -Discharge Branch
1617 Mail Service Center
Raleigh, NC 27699-1617

Signature
Submission Date 9/9/2024

MA
INC. PC
McDAVIDAsSOCIATES, INC.
CORPORATE OFFICE
Engineers • Planners • Land Surveyors
[phone] • Fax [phone]
E-mail: [e-mail]
3714 N. Main Street • P.O. Drawer 49
Farmviue, NC 27828
September 9, 2024
Mr. Erickson Saunders, Engineer 3
N. C. Department of Environmental Quality
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mr. Saunders:
GOLDSBORO OFFICE
Engineers • Planners
[phone] • Fax [phone]
E-mail: [e-mail]
109 E. Walnut Street • P.O. Box 1776
Goldsboro, NC 27533
Subject: Application No. WQ0003299
Additional Information Request # 1
Town of Seaboard WWTF
Wastewater Irrigation System
Northampton County
The following comments are provided in response to your August 13, 2024 letter requesting
additional information:
A. Overall.
1. The proposal for this modification includes a base bid and an alternative bid regarding the
configuration of the effluent storage. The Non -Discharge Branch does not have an
Authorization to Construct (ATC) permitting process, and therefore modification applications
only approve one completed final design (i.e. no alternatives). This application shall be
resubmitted to include only one final design.
The application has been revised to reflect only the base bid design. An updated application form
addressing all comments included in NCDEQ's "Additional Information Request # 1" is attached.
B. Cover Letter:
1. No comments.
C. Application Fee:
1. No comments.
D. Application (Form: WWIS 06-16):
1. Item V.3. notes that there is a bypass or overflow line, and from the equalization tank to the
anaerobic basin. This does not violate 1 SA NCAC 02T .05050) because it does not by-pass an
essential treatment unit, but please clar#ywhether this is the only overflow line.
There are no other overflow and/or bypass lines
\\G-G10S\D1005\2024\FTL 240906
Seaboard ATC Review Comments Response 09062024-ROO.doex

2. Item V.11. does not contain the information for the sodium hydroxide feed system as
described on plan Sheet G45, including the sodium hydroxide tank in Item V.11.c and the
peristaltic pump in Item V H.e. These sections shall be updated with this information.
Sections have been updated. Information on the sodium hydroxide supply storage tank has been
added to Item V. I Lb and information on the sodium hydroxide feed pumps has been added to
Item V.I Le. Information on the sodium hypochlorite supply storage tank has been added to Item
V.I Lc and information on the sodium hypochlorite feed pumps has been added to Item V. I Le.
3. The information for the MLSS Internal Recycle pump in Item V 11.e specifies two pumps
but mentions one pump and one spare for each basin. Please clarify whether there are four
pumps as specified on Page 678 of the spec feations package and update this item of the
application as necessary.
There are a total of two pumps (one per basin) to be installed at the WWTP and two spare pumps
(one per basin) to be provided. No changes to the application form appear necessary.
4. See COmmentA.1. Section VI shall only be submitted with impoundments.for the.ftnal
design.
See response to Comment A. 1. Section VI. The application has been revised to reflect only the
base bid design.
E. Property Ownership Documentation:
1. No comments.
P. Setback Waivers:
1. No comments.
G. Soil Evaluation:
1. NIA.
H. Agronomist Evaluation:
1. N/A.
L Hvdroeeologic Report:
L NIA.
\\G-G 1 OS\D 1005\2024\PTL
Seaboard ATC Review Comments Response 09062024-ROO.doex
M�INC
240906

J. Water Balance:
1. Item H in the WWIS 06-16 Instruction form note that a water balance shall be included in
applications that include changes in storage. Either bid package of this application changes
the footprint of the storage at this site. A water balance shall be submitted to verify that the
effective storage volumes provided are sufficient to dispose of the permitted influent on the
already approved irrigation fields.
The proposed new Effluent Storage Structure has been designed with essentially the same storage
capacity as the existing Effluent Storage Structure. The existing Effluent Storage Structure has
an effective volume of 7,425,000 gallons or 55.41 days of storage at average flow. The proposed
base bid dual cell Effluent Storage Structure has an effective volume of 7,557,291 gallons or
56.40 days of storage capacity. Since the proposed design is based on replacement of the existing
facility with the same capacity, no water balance calculations are provided.
K. Engineering Plans:
1. See Comment A.1.
L. Specifications:
1. No comments.
M. Engineering Calculations:
1. The Design Basis documentation provides effective storage values for the lagoon storage
system. for either bid package, but a calculation was not provided for this value. Item K in the
WWIS 06-16 Instruction form request total and effective storage calculations for each storage
unit. These calculations shall be provided in an updated calculations package.
Calculations have been included in an updated calculations package. The updated application
form only includes data for the proposed new Effluent Storage Structure. Information included in
Section V. references the updated calculations.
2. Item K in the WWIS 06-16 Instruction requires that a system curve analysis for each pump
shall be provided within the calculations. A pump performance datasheet was not provided for
the irrigation pumps to verify they are adequately sized for the design flow rate and pressure.
This information shall be provided in an updated calculations package.
A pump performance datasheet for the irrigation pumps is provided in an updated calculations
package.
\\G-G 1 OS\D 1005\2024\FTL
Seaboard ATC Review Comments Response 09062024-ROO.docx
J,
INC
2 0906

3. Item K requires manufacturer's information for all treatment units, blowers, mixers,
diffusers, and flow meters. Manufacturer's information for these units shall be provided in an
updated calculations package.
It is not appropriate to provide manufacturer's information for the various items of equipment
included in plans and specifications for a municipal WWTP project since the contract documents
have been prepared to encourage open competition among bidders in accordance with State law
regarding procurement for this type of work.
N. Site Map:
1. No comment.
O. Power Reliabilitv Plan:
1. No comments.
P. Operation & Maintenance Plan:
1. No comments.
Q. Residuals Manazement Plan:
1. No comments.
R. Additional Documentation:
Certificate of Public Convenience and Necessity:
1. N/A.
Existing Permit:
1. Condition L1. of the previous permit requested an engineering certification upon completion
and prior to operation of the permitted modifications, including the operation of the new
mechanical bar screen Parshall flume, and standby power generator. These items are included
on the engineering plans as existing features and the calculations mention that the bar screen
was recently constructed, but there is not an engineering certification on file. An engineering
certification and supporting documentation shall be submitted for all modifications approved
in the July 15, 2021, permit issuance that have been constructed. This certification shall certify
the facility has been constructed in accordance with applicable regulations, this permit, and
Division -approved plans and specifications, and note any variations.
A copy of the Engineer's Certification dated June 20, 2024, is attached.
\\G-G 1 OS\D 1005\2024TTL
Seaboard ATC Review Comments Response 09062024-ROO.docx
INC
240906

Final Environmental Document:
1. No comments.
Floodway Regulation Compliance:
1. No comments.
Operational Agreement.-
1. N/A.
Threatened or Endangered Aquatic Species Documentation:
1. No comments.
Wastewater Chemical Analysis:
1. No comments.
Should you have any additional questions and/or comments, please do not hesitate to give me
a call.
Sincerely
McDAVID ASSOCIATES, INC.
q
. Madden, E.oro Office
Attachments
cc: Town of Seaboard (w/attach)
\\G-G 1 OS\D 1005\2024TTL
Seaboard ATC Review Comments Response 09062024-ROO.doex
INC
240906

State of North Carolina
Department of Environmental Quality
DWR Division of Water Resources
15A NCAC 02T .0500 — WASTEWATER IRRIGATION SYSTEMS
Division of Water Resources INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION
Plans, specifications and supporting documents shall be prepared in accordance with 15A NCAC 02H .0400 (if necessary), 15A
NCAC 02L .0100, 15A NCAC 02T .0100, 15A NCAC 02T .0700, Division Policies and good engineering practices. Failure to
submit all required items will necessitate additional processing and review time.
For more information, visit the Water Quality Permitting Section's Non -Discharge Permitting Unit website
General — When submitting an application to the Water Quality Permitting Section's Non -Discharge Permitting Unit, please use the
following instructions as a checklist in order to ensure all required items are submitted. Adherence to these instructions and checking
the provided boxes will help produce a quicker review time and reduce the amount of requested additional information.
Unless otherwise noted. the Applicant shall submit one original and two conies of the application and supnortina documentation.
A. Cover Letter (All Application Packages):
® List all items included in the application package, as well as a brief description of the requested permitting action.
B. Application Fee (All New and Major Modification Application Packages):
® Submit a check, money order or electronic funds transfer made payable to: North Carolina Department of Environmental
Quality (NCDEQ). The appropriate fee amount for new and major modification applications may be found at: Standard Review
Proiect Fees.
C. Wastewater Irrigation Systems (FORM: WWIS 06-16) Application (All Application Packages):
® Submit the completed and appropriately executed Wastewater Irrigation Systems (FORM: WWIS 06-16) application. Any
unauthorized content changes to this form shall result in the application package being returned. If necessary for clarity or due
to space restrictions, attachments to the application may be made, as long as the attachments are numbered to correspond to the
section and item to which they refer.
❑ If the Applicant Type in Item I.2. is a corporation or company, provide documentation it is registered for business with the
North Carolina Secretary of State.
❑ If the Applicant Type in Item I.2. is a partnership or d/b/a, enclose a copy of the certificate filed with the Register of Deeds in
the county of business.
® The facility name in Item II.1. shall be consistent with the facility name on the plans, specifications, agreements, etc.
® The Professional Engineer's Certification on Page 12 of the application shall be signed, sealed and dated by a North Carolina
licensed Professional En ig neer.
® The Applicant's Certification on Page 12 of the application shall be signed in accordance with 15A NCAC 02T .0106(b). Per
15A NCAC 02T .0106(c), an alternate person may be designated as the signing official if a delegation letter is provided from
a person who meets the criteria in 15A NCAC 02T .0106(b).
❑ If this project is for a renewal without modification, use the Non -Discharge Svstem Renewal (FORM: NDSR) application.
D. Property Ownership Documentation (All Application Packages):
➢ Per 15A NCAC 02T .0504(f), the Applicant shall demonstrate they are the owner of all property containing the wastewater
treatment, storage and irrigation facilities:
® Legal documentation of ownership (i.e., GIS, deed or article of incorporation), or
❑ Written notarized intent to purchase agreement signed by both parties with a plat or survey map, or
❑ Written notarized lease agreement that specifically indicates the intended use of the property and has been signed by both
parties, as well as a plat or survey map. Lease agreements shall adhere to the requirements of 15A NCAC 02L .0107.
❑ Provide all agreements, easements, setback waivers, etc. that have a direct impact on the wastewater treatment, conveyance,
storage and irrigation facilities.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 1 of

E. Soil Evaluation (All Application Packages that include new irrigation sites):
❑ Per 15A NCAC 02T .0504(b) and the Soil Scientist Evaluation Policv. submit a detailed soil evaluation that has been signed,
sealed and dated by a North Carolina Licensed Soil Scientist and includes at a minimum:
❑ The report shall identify all the sites/fields with project name, location, and include a statement that the sites/fields were
recommended for the proposed land application activity.
❑ Field delineated detailed soils map meeting all of the requirements of the Soil Scientist Evaluation Policy.
❑ Soil profile descriptions meeting all of the requirements of the Soil Scientist Evaluation Policv.
❑ Provide all soil boring logs performed at the site.
❑ Standard soil fertility analysis conducted no more than one year prior to permit application for each map unit in the soil
map legend for the following parameters:
❑ Acidity ❑ Exchangeable sodium percentage (by calculation) ❑ Phosphorus
❑ Base saturation (by calculation) ❑ Magnesium ❑ Potassium
❑ Calcium ❑ Manganese ❑ Sodium
❑ Cation exchange capacity ❑ Percent humic matter ❑ Zinc
❑ Copper ❑ pH
➢ Saturated hydraulic conductivity (KSAT) data that shall include at a minimum:
❑ A minimum of three KSAT tests shall be conducted in the most restrictive horizon for each soil series in the soil map.
❑ All KSAT tests shall be conducted in areas representative of the site.
❑ All KSAT tests shall be run until steady-state equilibrium has been achieved.
❑ All collected KSAT data shall be submitted, including copies of field worksheets showing all collected readings.
❑ Submit a soil profile description for each KsAT data point that shall extend at least one foot below the tested horizon.
➢ Soil evaluation recommendations shall include at a minimum:
❑ A brief summary of each map unit and its composition and identification of minor contrasting soils.
❑ Maximum irrigation precipitation rate (in/hr) for each soil/map unit within the proposed irrigation areas.
❑ Seasonal irrigation restrictions, if appropriate.
❑ Identification of areas not suitable for wastewater irrigation.
❑ Recommended geometric mean KSAT rate to be used in the water balance for each soil/map unit based upon in -situ
measurement of the saturated hydraulic conductivity from the most restrictive horizon.
❑ Recommended drainage coefficient to be used in the water balance based upon comprehensive site evaluation, review
of collected onsite data, minor amounts of contrasting soils and the nature of the wastewater to be applied.
❑ Recommended annual hydraulic loading rate (in/yr) for each soil/map unit within the proposed irrigation areas based
upon in -situ KSAT measurements form the most restrictive soil horizon.
NOTE — If the soil evaluation was performed more than one year prior to the submittal of this application package, a statement shall
be included indicating that the site has not changed since the original investigation.
F. Agronomist Evaluation (All Application Packages that include new irrigation sites or new crops for existing irrigation sites):
❑ Per 15A NCAC 02T .0504(i), submit an agronomist evaluation that has been signed, sealed and dated by a qualified professional
and includes at a minimum:
❑ Proposed nutrient uptake values for each cover crop based upon each field's dominant soil series and percent slope.
❑ Plant available nitrogen calculations for each cover crop using the designed effluent concentrations in Application Item
V.1. and proposed mineralization and volatilization rates.
❑ Historical site consideration, soil binding and plant uptake of phosphorus.
❑ Seasonal irrigation restrictions, if appropriate.
❑ A clear and reproducible map showing all areas investigated and their relation to proposed fields and crops.
❑ Maintenance and management plan for all specified crops.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 2 of 6

G. Hydrogeologic Report (All Application Packages treating industrial waste or having a design flow over 25,000 GPD):
❑ Per 15A NCAC 02T .0504(e), the Hvdroeeoloeic Investigation and Reporting Policv, the Groundwater Modeline Policv and
the Performance and Analvsis of Aquifer Slue Tests and Pumping Tests Policy, submit a detailed hydrogeologic description
that has been signed, sealed and dated by a qualified professional and includes at a minimum:
❑ A hydrogeologic description to a depth of 20 feet below land surface or bedrock, whichever is less. A greater depth of
investigation is required if the respective depth is used in predictive calculations.
❑ Representative borings within the irrigation areas and all proposed earthen impoundments.
❑ A description of the regional and local geology and hydrogeology.
❑ A description, based on field observations of the site, of the site topographic setting, streams, springs and other groundwater
discharge features, drainage features, existing and abandoned wells, rock outcrops, and other features that may affect the
movement of the contaminant plume and treated wastewater.
❑ Changes in lithology underlying the site.
❑ Depth to bedrock and occurrence of any rock outcrops.
❑ The hydraulic conductivity and transmissivity of the affected aquifer(s).
❑ Depth to the seasonal high water table (SHWT).
❑ A discussion of the relationship between the affected aquifers of the site to local and regional geologic and hydrogeologic
features.
❑ A discussion of the groundwater flow regime of the site prior to operation of the proposed facility and post operation of
the proposed facility focusing on the relationship of the system to groundwater receptors, groundwater discharge features,
and groundwater flow media.
❑ If the SHWT is within six feet of the surface, a mounding analysis to predict the level of the SHWT after wastewater
application.
H. Water Balance (All Application Packages that include new or modified irrigation sites, changes in flow or changes in storage):
❑ Per 15A NCAC 02T .0504(k) and the Water Balance Calculation Policv, submit a water balance that has been signed, sealed
and dated by a qualified professional and includes at a minimum:
❑ At least a two-year iteration of data computation that considers precipitation into and evaporation from all open atmosphere
storage impoundments, and uses a variable number of days per month.
❑ Precipitation based on the 801 percentile and a minimum of 30 years of observed data.
❑ Potential Evapotranspiration (PET) using the Thornthwaite method, or another approved methodology, using a minimum
of 30 years of observed temperature data.
❑ Soil drainage based on the geometric mean of the in -situ KsAT tests in the most restrictive horizon and a drainage coefficient
ranging from 4 to 10% (unless otherwise technically documented).
➢ Other factors that may restrict the hydraulic loading rate when determining a water balance include:
❑ Depth to the SHWT and groundwater lateral movement that may result in groundwater mounding.
❑ Nutrient limitations and seasonal application times to ensure wastewater irrigation does not exceed agronomic rates.
❑ Crop management activities resulting in cessation of irrigation for crop removal.
NOTE — Wastewater Irrigation Systems serving residential facilities shall have a minimum of 14 days of wet weather storage.
I. Engineering Plans (All Application Packages):
® Per 15A NCAC 02T .0504(c)(1), submit standard size and 11 x 17-inch plan sets that have been signed, sealed and dated by a
North Carolina licensed Professional Engineer, and shall include at a minimum:
® Table of contents with each sheet numbered.
® A general location map with at least two geographic references and a vicinity map.
® A process and instrumentation diagram showing all flow, recycle/return, aeration, chemical, electrical and wasting paths.
® Plan and profile views of all treatment and storage units, including their piping, valves, and equipment (i.e., pumps,
blowers, mixers, diffusers, flow meters, etc.), as well as their dimensions and elevations.
® Details of all piping, valves, pumps, blowers, mixers, diffusers, recording devices, fencing, auxiliary power, etc.
® A hydraulic profile from the treatment plant headworks to the highest irrigation point.
❑ The irrigation area with an overlay of the suitable irrigation areas depicted in the Soil Evaluation.
❑ Each nozzle/emitter and their wetted area influence, and each irrigation zone labeled as it will be operated.
❑ Locations within the irrigation system of air releases, drains, control valves, highest irrigation nozzle/emitter, etc.
❑ For automated irrigation systems, provide the location and details of the precipitation/soil moisture sensor.
® Plans shall represent a completed design and not be labeled with preliminary phrases (e.g., FOR REVIEW ONLY, NOT
FOR CONSTRUCTION, etc.) that indicate they are anything other than final specifications. However, the plans may be
labeled with the phrase: FINAL DESIGN - NOT RELEASED FOR CONSTRUCTION.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 3 of 6

J. Specifications (All Application Packages):
® Per 15A NCAC 02T .0504(c)(2), submit specifications that have been signed, sealed and dated by a North Carolina licensed
Professional En ig neer, and shall include at a minimum:
® Table of contents with each section/page numbered.
® Detailed specifications for each treatment/storage/irrigation unit, as well as all piping, valves, equipment (i.e., pumps,
blowers, mixers, diffusers, flow meters, etc.), nozzles/emitters, precipitation/soil moisture sensor (if applicable),
audible/visual high water alarms, liner material, etc.
® Site Work (i.e., earthwork, clearing, grubbing, excavation, trenching, backfilling, compacting, fencing, seeding, etc.)
® Materials (i.e., concrete, masonry, steel, painting, method of construction, etc.)
® Electrical (i.e., control panels, transfer switches, automatically activated standby power source, etc.)
® Means for ensuring quality and integrity of the finished product, including leakage, pressure and liner testing.
® Specifications shall represent a completed design and not be labeled with preliminary phrases (e.g., FOR REVIEW ONLY,
NOT FOR CONSTRUCTION, etc.) that indicate they are anything other than final specifications. However, the
specifications may be labeled with the phrase: FINAL DESIGN - NOT RELEASED FOR CONSTRUCTION.
K. Engineering Calculations (All Application Packages):
® Per 15A NCAC 02T .0504(c)(31 submit engineering calculations that have been signed, sealed and dated by a North Carolina
licensed Professional Engineer, and shall include at a minimum:
❑ Hydraulic and pollutant loading calculations for each treatment unit demonstrating how the designed effluent
concentrations in Application Item V.I. were determined.
® Sizing criteria for each treatment unit and associated equipment (i.e., blowers, mixers, flow meters, pumps, etc.).
® Total and effective storage calculations for each storage unit.
® Friction/total dynamic head calculations and system curve analysis for each pump used.
❑ Manufacturer's information for all treatment units, pumps, blowers, mixers, diffusers, flow meters, irrigation system, etc.
® Flotation calculations for all treatment and storage units constructed partially or entirely below grade.
❑ A demonstration that the designed maximum precipitation and annual loading rates do not exceed the recommended rates.
® A demonstration that the specified auxiliary power source is capable of powering all essential treatment units.
L. Site Map (All Application Packages):
® Per 15A NCAC 02T .0504(d), submit standard size and 11 x 17-inch site maps that have been signed, sealed and dated by a
North Carolina licensed Professional Engineer and/or Professional Land Surveyor, and shall include at a minimum:
® A scaled map of the site with topographic contour intervals not exceeding 10 feet or 25 percent of total site relief and
showing all facility -related structures and fences within the wastewater treatment, storage and irrigation areas.
❑ Soil mapping units shown on all irrigation sites.
® The location of all wells (including usage and construction details if available), streams (ephemeral, intermittent, and
perennial), springs, lakes, ponds, and other surface drainage features within 500 feet of all wastewater treatment, storage
and irrigation sites.
® Delineation of the compliance and review boundaries per 15A NCAC 02L .0107 and .0108, and 15A NCAC 02T .0506(c)
if applicable.
® Setbacks as required by 15A NCAC 02T .0506.
® Site property boundaries within 500 feet of all wastewater treatment, storage and irrigation sites.
® All habitable residences or places of public assembly within 500 feet of all treatment, storage and irrigation sites.
NOTE — For clarity, multiple site maps of the facility with cut sheet annotations may be submitted.
M. Power Reliability Plan (All Application Packages):
® Per 15A NCAC 02T .0505(1), submit documentation of power reliability that shall consist of at a minimum:
® An automatically activated standby power supply onsite that is capable of powering all essential treatment units under
design conditions, OR
➢ Approval from the Director that the facility:
❑ Serves a private water distribution system that has automatic shut-off during power failures and has no elevated water
storage tanks,
❑ Has sufficient storage capacity that no potential for overflow exists, and
❑ Can tolerate septic wastewater due to prolonged detention.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 4 of 6

N. Operation and Maintenance Plan (All Application Packages):
® Per 15A NCAC 02T .0507, submit an operation and maintenance (O&M) plan encompassing all wastewater treatment, storage
and irrigation systems that shall include at a minimum a description of:
® Operation of the wastewater treatment, storage and irrigation systems in sufficient detail to show what operations are
necessary for the system to function and by whom the functions are to be conducted.
® Anticipated maintenance of the wastewater treatment, storage and irrigation systems.
® Safety measures, including restriction of access to the site and equipment.
® Spill prevention provisions such as response to upsets and bypasses, including how to control, contain and remediate.
® Contact information for plant personnel, emergency responders and regulatory agencies.
NOTE — A final O&M Plan shall be submitted with the partial and/or final Engineering Certification required under 15A NCAC
02T .0116, however, a preliminary O&M Plan shall be submitted with each application package.
O. Residuals Management Plan (All Application Packages with new, expanding or replacement wastewater treatment systems):
® Per 15A NCAC 02T .0504(i) and .0508, submit a Residuals Management Plan that shall include at a minimum:
® A detailed explanation of how 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 removal and collection are a designed unit process, submit an oil/grease disposal plan detailing how the
oil/grease will be collected, handled, processed, stored and disposed.
NOTE — Per 15A NCAC 02T .0505(o), a minimum of 30 days of residual storage shall be provided.
NOTE — Per 15A NCAC 02T .0504O a written commitment to the Applicant from a Permittee of a Department approved residuals
disposal/utilization program is not required at the time of this application, however, it shall be provided prior to operation of any
permitted facilities herein.
NOTE — If an on -site restaurant or other business with food preparation is contributing wastewater to this system, an oil/grease
disposal plan shall be submitted.
P. Additional Documentation:
➢ Certificate of Public Convenience and Necessity (All Application Packages for Privately -Owned Public Utilities):
❑ Per 15A NCAC 02T .0115(a)(1) and .0504 , provide the Certificate of Public Convenience and Necessity from the North
Carolina Utilities Commission demonstrating the Applicant is authorized to hold the utility franchise for the area to be
served by the wastewater treatment and irrigation system, or
❑ Provide a letter from the North Carolina Utilities Commission's Water and Sewer Division Public Staff stating an
application for a franchise has been received and that the service area is contiguous to an existing franchised area or that
franchise approval is expected.
➢ Existing Permit (All Modification Packages):
® Submit the most recently issued existing permit.
® Provide a list of any items within the permit the Applicant would like the Division to address during the permit modification
(i.e., compliance schedules, permit description, monitoring, permit conditions, etc.).
➢ Final Environmental Document (All Application Packages using public monies or lands subject to the North Carolina
Environmental Policy Act under 15A NCAC 0 1 C .0100 to .0400):
❑ Per 15A NCAC 02T .0105(c)(4), submit one copy of the environmental assessment and three copies of the final
environmental document (i.e., Finding of No Significant Impact or Record of Decision).
❑ Include information on any mitigating factors from the Environmental Assessment that impact the design and/or
construction of the wastewater treatment and irrigation system.
➢ Floodway Regulation Compliance (All Application Packages where any portion of the wastewater treatment, storage and
irrigation system is located within the 100-year floodplain):
® Per 15A NCAC 02T .0105(c)(8), provide written documentation from all local governing entities that the facility is in
compliance with all local ordinances regarding construction or operation of wastewater treatment and/or disposal facilities
within the floodplain.
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 5 of 6

P. Additional Documentation (continued):
➢ Operational Agreements (All Application Packages for Home/Property Owners' Associations and Developers of lots to be
sold):
➢ Home/Pronerty Owners' Associations
❑ Per 15A NCAC 02T .0115(c), submit the properly executed Operational Agreement (FORM: HOA).
❑ Per 15A NCAC 02T .0115(c), submit the proposed or approved Articles of Incorporation, Declarations and By-laws.
➢ Developers of lots to be sold
❑ Per 15A NCAC 02T .0115(b), submit the properly executed Operational Agreement (FORM: DEV).
➢ Threatened or Endangered Aquatic Species Documentation (All Application Packages):
❑ Per 15A NCAC 02T .0105(c)(10). submit documentation from the Department's Natural Heritage Program demonstrating
the presence or absence of threatened or endangered aquatic species within the boundary of the wastewater treatment,
storage and irrigation facilities.
❑ If the facility directly impacts such species, this documentation shall provide information on the need for permit conditions
pursuant to 15A NCAC 02B .0110.
➢ Wastewater Chemical Analysis (All Application Packages treating Industrial Waste):
❑ Per 15A NCAC 02T .0504(h), provide a complete Division certified laboratory chemical analysis of the effluent to be
irrigated for the following parameters (For new facilities, an analysis from a similar facility's effluent is acceptable):
® Ammonia Nitrogen (NH3-N) ® Nitrate Nitrogen (NOs-N) ® Total Organic Carbon
® Calcium ® pH ® Total Phosphorus
® Chemical Oxygen Demand (COD) ® Phenol ® Total Trihalomethanes
® Chloride ® Sodium ® Total Volatile Organic Compounds
® Fecal Coliform ® Sodium Adsorption Ratio (SAR) ® Toxicity Test Parameters
® 5-day Biochemical Oxygen Demand (BOD5) ® Total Dissolved Solids
® Magnesium ® Total Kjeldahl Nitrogen (TKN)
THE COMPLETED APPLICATION AND SUPPORTING DOCUMENTATION SHALL BE SUBMITTED TO:
NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
WATER QUALITY PERMITTING SECTION
NON -DISCHARGE PERMITTING UNIT
By U.S. Postal Service:
1617 MAIL SERVICE CENTER
RALEIGH, NORTH CAROLINA 27699-1617
TELEPHONE NUMBER: [phone]
By Courier/Special Deliverv:
512 N. SALISBURY ST.
RALEIGH. NORTH CAROLINA 27604
FAX NUMBER: [phone]
INSTRUCTIONS FOR FORM: WWIS 06-16 & SUPPORTING DOCUMENTATION Page 6 of 6

DWR
Division of Water Resources
State of North Carolina
Department of Environmental Quality
Division of Water Resources
15A NCAC 02T .0500 — WASTEWATER IRRIGATION SYSTEMS
FORM: WWIS 06-16
I. APPLICANT INFORMATION:
1. Applicant's name: Town of Seaboard
2. Applicant type: ❑ Individual ❑ Corporation ❑ General Partnership
❑ Federal ❑ State ® Municipal
3. Signature authority's name: Geraldine Langford per 15A NCAC 02T .0106(b)
4. Applicant's mailing address: P.O. Box 327
City: Seaboard State: NC Zip: 27876-
5. Applicant's contact information:
Phone number: 252 589-6061 Email Address: gilangford(d),hotmail.com
H. FACILITY INFORMATION:
1. Facility name: Seaboard Wastewater Treatment Plant
2. Facility status: Existing
3. Facility type: Maior (> 10,000 GPD or> 300 disposal acres)
4. Facility's physical address: 130 Williams Street
City: Seaboard State: NC Zip: 27876- County: Northampton
5. Wastewater Treatment Facility Coordinates (Decimal Degrees): Latitude: 36.499'
Datum: Unknown Level of accuracy: Unknown Method of measurement: Unknown
6. USGS Map Name: Jackson, NC and Claresville
❑ Privately -Owned Public Utility
❑ County
Longitude:-77.438'
III. CONSULTANT INFORMATION:
1. Professional Engineer: Richard B. Moore. License Number: 020205 Firm: McDavid Associates, Inc.
Mailing address: PO Box 813
City: Farmville State: NC
Zip: 27828-
Phone number: [phone]
Email Address: rbmOmcdavid-inc.com
2. Soil Scientist:
License Number: Firm:
Mailing address:
City: State:
Zip: -
Phone number: (_) _-
Email Address:
3. Geologist:
License Number: Firm:
Mailing address:
City: State:
Zip: -
Phone number: () _-
Email Address:
4. Agronomist:
Firm:
Mailing address:
City: State:
Zip: -
Phone number: (_) _-
Email Address:
Title: Moor
FORM: WWIS 06-16
Page 1 of 12

IV. GENERAL REQUIREMENTS —15A NCAC 02T .0100:
1. Application type: ❑ New ® Major Modification ❑ Minor Modification
If a modification, provide the existing permit number: WQ0003299 and most recent issuance date:
2. Application fee: $395 - Standard - Maior Facility - Maior Mod
3. Does this project utilize public monies or lands? ® Yes or ❑ No
If yes, was an Environmental Assessment required under 15A NCAC 01 C? ❑ Yes or ® No
If yes, which final environmental document is submitted? ❑ Finding of No Significant Impact or ❑ Record of Decision
Briefly describe any mitigating factors from the Environmental Assessment that may impact this facility: NA
4. What is the status of the following permits/certifications applicable to the subject facility?
Permit/Certification Date Date Permit/Certification Agency Reviewer
Submitted Approved Number
Collection System (Q > 200,000 GPD) N/A
Dam Safety N/A
Erosion & Sedimentation Control Plan 5/8/24 ?
Nationwide 12 / Section 404 N/A
Pretreatment Keyes McGee
Sewer System N/A
Stormwater Management Plan N/A
Wetlands 401 N/A
Other: N/A
5. What is the wastewater type? ® Domestic or ] Industrial (See 15A NCAC 02T .0103(20))
Is there a Pretreatment Program in effect? ® Yes or ❑ No
Has a wastewater chemical analysis been submitted? ® Yes or ❑ No
6. Wastewater flow: 134,000 GPD
Limited by: ® Treatment, ® Storage, ❑ Field Hydraulics, ❑ Field Agronomics or ❑ Groundwater Mounding
7. Explain how the wastewater flow was determined: ❑ 15A NCAC 02T .0114 or ® Representative Data
Has a flow reduction been approved under 15A NCAC 02T .0114(f)? ❑ Yes or ® No
Establishment Type Daily Design Flow a No. of Units Flow
Existing Permit with no change 134,000 gal/day 134,000 GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD l
Total 134,000 GPD
a See 15A NCAC 02T .0114(b), (d), (e)(1) and (e)(2), for caveats to wastewater design flow rates (i.e., minimum flow per
dwelling; proposed unknown non-residential development uses; public access facilities located near high public use areas;
and residential property located south or east of the Atlantic Intracoastal Waterway to be used as vacation rentals as defined
in G.S. 42A-4).
FORM: WWIS 06-16 Page 2 of 12

IV. GENERAL REQUIREMENTS — 15A NCAC 02T .0100 (continued):
8. What is the nearest 100-year flood elevation to the facility? 88.5 feet mean sea level. Source: FRIS Man Panel 4060
IAre any treatment, storage or irrigation facilities located within the 100-year flood plain? ❑ Yes or ® No
Iy If yes, which facilities are affected and what measures are being taken to protect them against flooding? N/A
If yes, has the Applicant submitted written documentation of compliance with & 143 Article 21 Part 6? ❑ Yes or ❑ No
9. Has the Applicant provided documentation of the presence or absence of threatened or endangered aquatic species utilizing
information provided by the Department's Natural Heritage Program? ® Yes or ❑ No
10. Does the facility have a proposed or existing groundwater monitoring well network? ® Yes or ❑ No
If no, provide an explanation as to why a groundwater monitoring well network is not proposed:
If yes, complete the following table (NOTE — This table may be expanded for additional wells):
Well Name Status Latitude a Longitude a Gradient Location
MW-6 Active 36.5012240-77.4375080 Up Gradient Inside Compliance Boun
MW-7 Active 36.4995230-77.4409960 Down Gradient Inside Compliance Boun
MW-8 Active 36.4970580-77.4385160 Down Gradient On Review Boundary
MW-9 Active 36.4970000-77.4355530 Down Gradient On Review Boundary 1
MW-10 Active 36.5010640-77.4338150 Down Gradient On Review Boundary 1
MW-11 Proposed 36.4910190-77.4272950 Down Gradient On Review Boundary
MW-12 Proposed 36.5009730-77.428951 ° Down Gradient On Review Boundary
MW-13 Proposed 36.5000520-77.4268570 Up_ Gradient On Review Boundary
Select 0- 0Select Select
Select 0- 0Select Select
a Provide the following latitude and longitude coordinate determination information:
Datum: NAD83 Level of accuracy: UnknownMethod of measurement: Unknown
11. If the Applicant is a Privately -Owned Public Utility, has a Certificate of Public Convenience and Necessity been submitted?
❑ Yes, ❑No or ®N/A
12. If the Applicant is a Developer of lots to be sold, has a Developer's Operational Agreement (FORM: DEV) been submitted?
❑ Yes, ❑No or ®N/A
13. If the Applicant is a Home/Property Owners' Association, has an Association O_erational Agreement (FORM: HOA) been
submitted? ❑ Yes, ❑No or ®N/A
14. Demonstration of historical consideration for permit approval — 15A NCAC 02T .0120:
Has the Applicant or any parent, subsidiary or other affiliate exhibited the following?
a. Has been convicted of environmental crimes under Federal law or G.S. 143-215.613? ❑ Yes or ® No
b. Has previously abandoned a wastewater treatment facility without properly closing that facility? ❑ Yes or ® No
c. Has unpaid civil penalty where all appeals have been abandoned or exhausted? ❑ Yes or ® No
d. Is non -compliant with an existing non -discharge permit, settlement agreement or order? ❑ Yes or ® No
e. Has unpaid annual fees in accordance with 15A NCAC 02T .0I05(e)(2)? ❑ Yes or ® No
FORM: VMS 06-16 Page 3 of 12

V. WASTEWATER TREATMENT FACILITY DESIGN CRITERIA — 15A NCAC 02T .0505:
1. For the following parameters, provide the estimated influent concentrations and designed effluent concentrations as
determined in the Engineering Calculations, and utilized in the Agronomic Evaluation and Groundwater Modeling (if
applicable):
Parameter
Ammonia Nitrogen (NH3-N)
Biochemical Oxygen Demand (BODs)
Fecal Coliforms
Nitrate Nitrogen (NO3-N)
Nitrite Nitrogen (NO2-N)
Total Kjeldahl Nitrogen
Total Nitrogen
Total Phosphorus
Total Suspended Solids (TSS)
Estimated Influent Concentration
21 mg/L
350 mg/L
0 mg/L
0 mg/L
42 mg/L
8 mg/L
300 mg/L
Designed Effluent Concentration
(monthly average)
1 mg/L
2. Is flow equalization of at least 25% of the average daily flow provided? Z Yes or ❑ No
3. Does the treatment facility include any bypass or overflow lines? ® Yes or ® No
15 mg/L
200 per 100 mL
3 mg/L
0 mg/L
2 mg/L
5 mg/L
6 mg/L
15 mg/L
If yes, describe what treatment units are bypassed, why this is necessary, and where the bypass discharges: Overflow from
EO to Anaerobic Basin
4. Are multiple pumps provided wherever pumps are used? ® Yes or ❑ No
If no, how does the Applicant intend on complying with 15A NCAC 02T .0505(k)? N/A
5. Check the appropriate box describing how power reliability will be provided in accordance with 15A NCAC 02T .0505(1):
® Automatically activated standby power supply onsite capable of powering all essential treatment units; or
❑ 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;
➢ Has sufficient storage capacity that no potential for overflow exists; and
➢ Can tolerate septic wastewater due to prolonged detention.
6. If the wastewater treatment system is located within the 100-year flood plain, are there water -tight seals on all treatment units
or a minimum of two feet protection from the 100-year flood plain elevation? ❑ Yes, ❑ No or ® N/A
7. In accordance with 15A NCAC 02T .0505(o), how many days of residuals storage are provided? 90
8. How does the Applicant propose to prohibit public access to the wastewater treatment and storage facilities? Yes. By Fence
9. If an influent pump station is part of the proposed facility (i.e., within the wastewater treatment plant boundary), does the
influent pump station meet the design criteria in 15A NCAC 02T .0305(h)? ® Yes, ❑ No, ❑ N/A — To be permitted
separately, or ❑ N/A — Gravity fed
10. If septic tanks are part of the wastewater treatment facility, do the septic tanks adhere to the standards in 15A NCAC 18A
.1900? ❑ Yes, ❑ No or ® N/A
FORM: WWIS 06-16 Page 4 of 12

V. WASTEWATER TREATMENT FACILITY DESIGN CRITERIA — 15A NCAC 02T .0505 (continued):
11. Provide the requested treatment unit
and mechanical equipment information:
a.
PRELIMINARY / PRIMARY
TREATMENT (i.e., physical
removal operations and flow equalization):
No. of
Manufacturer or
Dimensions (ft) /
Volume
Plan Sheet
Specification
Treatment Unit
Units
Material
Spacings (in)
(gallons)
Reference
Reference
Manual Bar Screen one
Existing
one inch
G11
Existing
Mechanical Bar Screen one
Existing
0.25 inch
G11
Existing I
Flow Equalization one
Steel Tank
39'-3"x24'x9'-6"
67,000
G21
11391 I
Select
Select
I
b.
SECONDARY / TERTIARY TREATMENT (i.e., biological
and chemical processes to remove organics and nutrients)
No. of
Treatment Unit
Manufacturer or
Dimensions (ft)
Volume
Plan Sheet
Specification
Units
Material
(gallons)
Reference
Reference
Other Two
Anaerobic Steel
4'-7"xl2'x9'-6"
3,900
G21
11391
Tanks
Anoxic Basin Two
Steel Tanks
23'xl2'x9'-6"
19,600
G21
11391 I
Aeration Basin Two
Steel Tanks
92'x12'x9'6"
78,400
G21
11391
Clarifier Two
Steel Tanks
21' dia., 12' swd each
29,793 ea.
G21
11391 I
102" x 142" sodium
Other One
Polyethylene
hydroxide supply
3,000
G45
N/A
storage tank
Select
Select
1
Select
1
c.
DISINFECTION
No. of
Treatment Unit
Manufacturer or
Dimensions (ft)
Volume
Plan Sheet
Specification
Units
Material
(gallons)
Reference
Reference
Chlorination Tank Two
Steel Tanks
6.67' x 18.75' x 6'
5,610 ea.
G28
11391
414" x 510"
Other One
Polyethylene
hypochlorite solution
500
G46-47
11268
supply storage tank
➢
If chlorination is the proposed
method of disinfection,
specify detention time provided: 32 minutes at Deak
flow minutes
(NOTE — 30 minutes minimum required), and indicate what treatment unit chlorine contact occurs: Chlorine Contact
Tanks
➢
If ultraviolet (UV) light is the proposed method of disinfection, specify the number of banks:
N/A, number of lamps per
bank: N/A and maximum disinfection capacity: N/A GPM.
d.
RESIDUAL TREATMENT
No. of
Treatment Unit
Manufacturer or
Dimensions (ft)
Volume
Plan Sheet
Specification
Units
Material
(gallons)
Reference
Reference
Aerobic Digester One
Steel Sludge
17'-9"x24'x9'-6"
30,000
G21
11391
Digester
Aerobic Digester One
Steel Sludge Storage
35'-3"x24'x9'-6"
60,000
G21
11391
FORM: WWIS 06-16 Page 5 of 12

V. WASTEWATER TREATMENT FACILITY DESIGN CRITERIA —15A NCAC 02T .0505 (continued):
e. PUMPS
No. of
Manufacturer /
Capacity
Plan Sheet
Specification
Location
Pumps
Purpose
Type
GPM TDH
Reference
Reference
Equalization Basin
Two
Equalizes flow to
Submersible
100 15'
G21
11391
flow splitter box
MLSS Internal
One in each aeration
Submersible with
Recycle
Two
basin plus one spare
VFD s
93-186 10'
G21
11391
for each basin
Duality is provided
RAS Air Lift Pumps
Two
One for each clarifier
by having multiple
70 3'
G21
11391
blowers
Duality is provided
Scum Air Lift Pumps
Two
One for each clarifier
by haviong multiple
15 3
G21
11391
blowers
One dedicated for
Irrigation Pumps
Three
each spray field.
Turbine
235 145
G29
11214
Piping allows them to
serve any field
Influent Pumps
Two
Transfers flow to the
Submersible
350 46.41'
G20
11310
EQ Basin
Sodium Hydroxide
Two
pH adjustment
Peristaltic
.045-
4.5 254
G44-45
N/A
Feed Pumps
GPH
Sodium Hypochlorite
Positive
Feed Pumps
Two
Disinfection
Displacement
20 231
G46-47
11268
Diaphram
f. BLOWERS
Location
No. of
Units Served
Manufacturer /
Capacity
Plan Sheet
Specification
Blowers
Type
(CFM)
Reference
Reference
Treatment is not
EQ Basin
One
adversely affected if
Centrifugal or PD
140
G21
11391
the blower goes town
a few days
Treatment is not
Sludge Holding
One
adversely affected if
Centrifugal or PD
240
G21
11391
the blower goes town
a few days
Treatment is not
Sludge Digestion
One
adversely affected if
Centrifugal or PD
120
G21
11391
the blower goes town
a few days
Two per Aeration
Aeration Basin
Four
Basin (100% backup
Centrifugal or PD
425 ea
G21
11391
in each basin)
g. MIXERS
Location
Anaerobic
Anoxic
No. of
Mixers
Units Served
Manufacturer /
Type
One for each basin
Two
and one spare for
Rag Free on a shaft
each basin
One for each basin
Two
and one spare for
Rag Free on a shaft
each basin
Power Plan Sheet
Specification
(hp) Reference
Reference
1 G24
11391
5 G24
11391
FORM: WWIS 06-16
Page 6 of 12

h. RECORDING DEVICES & RELIABILITi'
Device
No. of
Location
Manufacturer
Maximum
Plan Sheet
Specification
Units
Capacity
Reference
Reference
Influent Flow Measuring Device
one
Inf Pump Sta
Mag Meter
500 gpm
G71
13326
Effluent Flow Measuring Device
one
Post Cl Tank
Mag Meter
500 gpm
G71
13326
Other
one
Eq Tank
Composite
Refrigerated
24 hr
G31
13325
Effluent Sampling Station
one
Cl Contact Tk
Composite
Refrigerated
24 hr
G24
13325
i. EFFLUENT PUMP / FIELD DOSING TANK
(IF APPLICABLE):
Internal dimensions (L x W x H or 9 x H)
Total volume
Dosing volume
Audible & visual alarms
Equipment to prevent irrigation during rain
events
ft I ft ft
ft3 gallons
ft3 gallons
Plan Sheet Specification
Reference Reference
FORM: WWIS 06-16
Page 7 of 12

V. EARTHEN IMPOUNDMENT DESIGN CRITERIA —15A NCAC 02T .0505:
IF MORE THAN ONE IMPOUNDMENT. PROVIDE ADDITIONAL COPIES OF THIS PAGE AS NECESSARY.
1. What is the earthen impoundment type? Treated Effluent New Base Bid Structure No 1- North
2. Storage Impoundment Coordinates (Decimal Degrees): Latitude: 36.5010° Longitude:-77.428°
Datum: NAD83 Level of accuracy: Unknown Method of measurement: Unknown
3. Do any impoundments include a discharge point (pipe, spillway, etc)? ❑ Yes or XNo
4. Are subsurface drains present beneath or around the impoundment to control groundwater elevation? ❑ Yes or X No
5. Is the impoundment designed to receive surface runoff? ❑ Yes or X No
If yes, what is the drainage area? N/A ft, and was this runoff incorporated into the water balance? ❑ Yes or ❑ No
6. If a liner is present, how will it be protected from wind driven wave action?: Fabric bans filled with fine P-rout cement
7. Will the earthen impoundment water be placed directly into or in contact with GA classified groundwater? ❑ Yes or X
No
If yes, has the Applicant provided predictive calculations or modeling demonstrating that such placement will not result in
a contravention of GA groundwater standards? ❑ Yes or ❑ No N/A
8. What is the depth to bedrock from the earthen impoundment bottom elevation? >20 ft
If the depth to bedrock is less than four feet, has the Applicant provided a liner with a hydraulic conductivity no
greater than 1 x 10-' � cm/s? El Yes, 0 No or X N/A
Has the Applicant provided predictive calculations or modeling demonstrating that
surface water or groundwater standards will not be contravened? ❑ Yes or ❑ No
If the earthen impoundment is excavated into bedrock, has the Applicant provided predictive calculations or modeling
demonstrating that surface water or groundwater standards will not be contravened? ❑ Yes, ❑ No or X N/A
9. If the earthen impoundment is lined and the mean seasonal high water table is higher than the impoundment
bottom elevation, how will the liner be protected (e.g., bubbling, groundwater infiltration, etc.)? N/A
10. If applicable, provide the specification page references for the liner installation and testing requirements: Sheets G35&G42
11. If the earthen impoundment is located within the 100-year flood plain, has a minimum of two feet of protection (i.e.,
top of embankment elevation to 100-year flood plain elevation) been provided? ❑ Yes or ❑ No N/A
12. Provide the requested earthen impoundment design elements and dimensions:
Earthen Impoundment Design Elements
® Clay ❑ Synthetic
Liner type: ❑ Other Unlined
Liner hydraulic conductivity
Hazard class:
Designed freeboard:
Total volume:
Effective volume:
Effective storage time:
Plan Sheet Reference:
Specification Section:
lx10 6 cm/s
Not ADolicable
3 It
ft3
Earthen Impoundment Dimensions
Top of embankment elevation:
Freeboard elevation:
Toe of slope elevation:
Impoundment bottom elevation:
6,351,144 Mean seasonal high water table depth:
gallons J
113 3,749,452
gallons
27.98 days
Sheet G30
N/A
Embankment slope: Outside & Inside
Top of dam water surface area:
Freeboard elevation water surface area:
Bottom of impoundment surface area:
123 It
120 ft
113 ft
113 It
2-3ft
4:1 & 2:1
139,757 ft2
130,997112
111,437 112
NOTE — The effective volume shall be the volume between the two foot freeboard elevation and the: (1) pump intake pipe
elevation; (2) impoundment bottom elevation or (3) mean seasonal high water table, whichever is closest to the two foot
freeboard elevation.

V. EARTHEN IMPOUNDMENT DESIGN CRITERIA —15A NCAC 02T .0505:
IF MORE THAN ONE IMPOUNDMENT, PROVIDE ADDITIONAL COPIES OF THIS PAGE AS NECESSARY.
a. What is the earthen impoundment type? Treated Effluent New Base Bid Structure No 2 - South
b. Storage Impoundment Coordinates (Decimal Degrees): Latitude: 36.5001 ° Longitude:-77.428°
Datum: NAD83 Level of accuracy: Unknown Method of measurement: Unknown
c. Do any impoundments include a discharge point (pipe, spillway, etc)? ❑ Yes or XNo
d. Are subsurface drains present beneath or around the impoundment to control groundwater elevation? ❑ Yes or X
No
e. Is the impoundment designed to receive surface runoff? ❑ Yes or X No
If yes, what is the drainage area? N/A ft2, and was this runoff incorporated into the water balance? ❑ Yes or ❑ No
f. If a liner is present, how will it be protected from wind driven wave action?: Fabric bags filled with fine Grout cement
g. Will the earthen impoundment water be placed directly into or in contact with GA classified groundwater? ❑ Yes or X
No
If yes, has the Applicant provided predictive calculations or modeling demonstrating that such placement will not result in
a contravention of GA groundwater standards? ❑ Yes or ❑ No N/A
h. What is the depth to bedrock from the earthen impoundment bottom elevation? >20 ft
If the depth to bedrock is less than four feet, has the Applicant provided a liner with a hydraulic conductivity no
greater than 1 x 10-' c� m/ ? El Yes, ❑ No or X N/A
Has the Applicant provided predictive calculations or modeling demonstrating that
surface water or groundwater standards will not be contravened? ❑ Yes or ❑ No
If the earthen impoundment is excavated into bedrock, has the Applicant provided predictive calculations or modeling
demonstrating that surface water or groundwater standards will not be contravened? ❑ Yes, ❑ No or X N/A
i. If the earthen impoundment is lined and the mean seasonal high water table is higher than the
impoundment bottom elevation, how will the liner be protected (e.g., bubbling, groundwater
infiltration, etc.)? N/A
j. If applicable, provide the specification page references for the liner installation and testing requirements: Sheets
G35&G42
k. If the earthen impoundment is located within the 100-year flood plain, has a minimum of two feet of protection
(i.e., top of embankment elevation to 100-year flood plain elevation) been provided? ❑ Yes or ❑ No N/A
1. Provide the requested earthen impoundment design elements and dimensions:
Earthen Impoundment Design Elements
® Clay El Synthetic
Liner type:
Other ❑ Unlined
Liner hydraulic conductivity:
Ix10 -6 cm/s
' Hazard class:
Not Applicable
Designed freeboard:
3 ft
Total volume:
ft, 6,432,559
gallons
Effective volume:
ft, 3,807,839
gallons
Effective storage time:
28.42 days
Plan Sheet Reference: Sheet 630
Specification Section: N/A
Earthen Impoundment Dimensions
Top of embankment elevation:
123 ft
Freeboard elevation:
120 ft
Toe of slope elevation:
113 ft
Impoundment bottom elevation:
113 ft
Mean seasonal high water table depth:
2 — 3 ft
Embankment slope: Outside & Inside
4:1 & 2:1
Top of dam water surface area:
144,496 ft2
Freeboard elevation water surface area:
134,266 ft2
Bottom of impoundment surface area:
111,274 ft2
NOTE — The effective volume shall be the volume between the two foot freeboard elevation and the: (1) pump intake pipe
elevation; (2) impoundment bottom elevation or (3) mean seasonal high water table, whichever is closest to the two foot
freeboard elevation.

VIL IRRIGATION SYSTEM DESIGN CRITERIA —15A NCAC 02T .0505:
1. Provide the minimum depth to the seasonal high water table within the irrigation area:
NOTE — The vertical separation between the seasonal high water table and the ground surface shall be at least one foot.
2. Are there any artificial drainage or water movement structures (e.g., surface water or groundwater) within 200 feet of the
irrigation area? ❑ Yes or ® No
If yes, were these structures addressed in the Soil Evaluation and/or Hydrogeologic Report, and are these structures to be
maintained or modified? N/A
3. Soil Evaluation recommended loading rates (NOTE — This table may be expanded for additional soil series):
Fields within
Recommended Recommended Annual /Seasonal If Seasonal, list
Soil Series Loading Rate Loading Rate appropriate
Soil Series (in/hr) (in/yr) Loading months
NoA Annual
Annual
Annual
Select
Select
Select
4. Are the designed loading rates less than or equal to Soil Evaluation recommended loading rates? ® Yes or ❑ No
If no, how does the Applicant intend on complying with 15A NCAC 02T .0505(n)?
5. How does the Applicant propose to prohibit public access to the irrigation system? Fence
6. Has the irrigation system been equipped with a flow meter to accurately determine the volume of effluent applied to each
field as listed in VII.8.? ® Yes or ❑ No
If no, how does the Applicant intend on complying with 15A NCAC 02T .0505(t)? N/A
7. Provide the required cover crop information and demonstrate the effluent will be applied at or below agronomic rates:
a Nitrogen Uptake Rate Phosphorus Uptake
Cover Crop Soil Series /o Slope (lbs/aeyr) Rate (lbs/ae•yr)
Sycamore Trees NoA 2% - 6%
a. Specify where the nitrogen and phosphorus uptake rates for each cover crop were obtained:
b. Proposed nitrogen mineralization rate:
c. Proposed nitrogen volatilization rate:
d. Minimum irrigation area from the Agronomist Evaluation's nitrogen balance: ft2
e. Minimum irrigation area from the Agronomist Evaluation's phosphorus balance: ft2
f. Minimum irrigation area from the water balance: ft2
FORM: WWIS 06-16 Page 9 of 12

VII. IRRIGATION SYSTEM DESIGN CRITERIA — 15A NCAC 02T .0505 (continued):
8. Field Information (NOTE
— This table may be expanded for additional fields):
Designed
Designed
Area
Dominant
Loading
Loading
Waterbody
Field
(acres)
Soil Series
Rate
a
Rate Latitude
a
Longitude
Stream Index
Classification
(in/hr)
(in/yr)
No. b
I1
11.7
NoA
0.2
61 36.499720
-77.4378550
25-4-3.1
QNSW
2
11.7
NoA
0.2
61 36.498850
-77.4397630
25-4-3.1
QNSW
3
11.7
NoA
0.2
61 36.398320
°
-77.4370400
- °
25-4-3.1
QNSW
All Three fields above
are existing with no
changes
° _ °
° °
° - °
° °
° °
° °
° °
° °
Total
a Provide the following latitude and longitude coordinate determination information:
Datum: NAD83 Level of accuracy: UnknownMethod of measurement: Aerial DhotoeraDhv with around control
b For assistance determining the waterbody stream index number and its associated classification, instructions may be
downloaded at: htty://de(i.nc.aov/about/divisions/water-resources/Dlanninp-/classification-standards/classifications
FORM: WWIS 06-16 Page 10 of 12

Spray Irrigation Design Elements
Nozzle wetted diameter: 80 ft
Nozzle wetted area: 5,026 ft2
Nozzle capacity: 2.56 GPM
Nozzle manufacturer/model: ? / ?
Elevation of highest nozzle: 100 ft
Specification Section: Existing
Drip Irrigation Design Elements
Emitter wetted area:
N/A ft2
Distance between laterals:
N/A ft
Distance between emitters:
N/A ft
Emitter capacity:
N/A GPH
Emitter manufacturer/model:
N/A / N/A
Elevation of highest emitter:
N/A ft
Specification Section:
N/A
VIII. SETBACKS —15A NCAC 02T .0506:
1. Does the project comply with all setbacks found in the river basin rules (15A NCAC 02B .0200)? ® Yes or ❑ No
If no, list non -compliant setbacks:
2. Have any setback waivers been obtained in order to comply with 15A NCAC 02T .506(a) and .05 06b ? ❑ 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
3. Provide the minimum field observed distances (ft) for each setback parameter to the irrigation system and treatment/storage
units (NOTE — Distances greater than 500 feet may be marked N/A):
Setback Parameter
Any habitable residence or place of assembly under separate ownership or not to be
maintained as part of the project site
Any habitable residence or place of assembly owned by the Permittee to be maintained as
part of the project site
Any private or public water supply source
Surface waters (streams — intermittent and perennial, perennial waterbodies, and wetlands)
Groundwater lowering ditches (where the bottom of the ditch intersects the SHWT)
Subsurface groundwater lowering drainage systems
Surface water diversions (ephemeral streams, waterways, ditches)
Any well with exception of monitoring wells
Any property line
Top of slope of embankments or cuts of two feet or more in vertical height
Any water line from a disposal system
Any swimming pool
Public right of way
Nitrification field
Any building foundation or basement
Irrigation Treatment /
System Storage Units
500 1,114
N/A
500
196
N/A
N/A
N/A
500
150
N/A
68
N/A
592
N/A
500
1,912
366
1,114
150
Impounded public water supplies N/A
Public shallow groundwater supply (less than 50 feet deep) N/A
4. Does the Applicant intend on complying with 15A NCAC 02T .0506(c) in order to have reduced irrigation setbacks to
property lines? ❑ Yes or ® No
If yes, complete the following table by providing the required concentrations as determined in the Engineering Calculations:
FORM: WWIS 06-16
Page 11 of 12

Parameter
Ammonia Nitrogen (NH3-N)
Biochemical Oxygen Demand
(BOD5)
Fecal Coliforms
Total Suspended Solids (TSS)
Turbidity
Estimated Influent Designed Effluent Designed Effluent
Concentration Concentration Concentration
(monthly average) (daily maximum)
N/A mg/L
N/A mg/L
N/A mg/L
N/A mg/L
N/A per 100 mL
N/A mg/L
N/A mg/L
N/A mg/L
N/A mg/L
N/A per 100 mL
N/A mg/L
N/A NTU
FORM: WWIS 06-16 Page 12 of 12

IX. COASTAL WASTE TREATMENT DISPOSAL REQUIREMENTS —15A NCAC 02H .0400:
1. Is this facility located in a Coastal Area as defined per 15A NCAC 02H .0403? ❑ Yes or ® No
For assistance determining if the facility is located within the Coastal Area, a reference map may be downloaded at: Coastal
Areas Boundary.
2. Is this an Interim Treatment and Disposal Facility per 15A NCAC 02H .0404 0? ❑ Yes or ® No
NOTE — Interim facilities do not include County and Municipal area -wide collection and treatment systems.
IF ANSWERED YES TO ITEMS IX.1. AND IX.2., THEN COMPLETE ITEMS IX.3. THROUGH IX.17.
3. Is equalization of at least 25% of the average daily flow provided? ❑ Yes or ❑ No
4. How will noise and odor be controlled?
5. Is an automatically activated standby power source provided? ❑ Yes or ❑ No
6. Are all essential treatment units provided in duplicate? ❑ Yes or ❑ No
NOTE — Per 15A NCAC 02T .010306), essential treatment units are defined as any unit associated with the wastewater
treatment process whose loss would likely render the facility incapable of meeting the required performance criteria, including
aeration units or other main treatment units, clarification equipment, filters, disinfection equipment, pumps and blowers.
7. Are the disposal units (i.e., irrigation fields) provided in duplicate (e.g., more than one field)? ❑ Yes or ❑ No
8. Is there an impounded public surface water supply within 500 feet of the wetted area? ❑ Yes or ❑ No
9. Is there a public shallow groundwater supply (less than 50 feet deep) within 500 feet of the wetted area? ❑ Yes or ❑ No
10. Is there a private groundwater supply within 100 feet of the wetted area? ❑ Yes or ❑ No
11. Are there any SA classified waters within 100 feet of the wetted area? ❑ Yes or ❑ No
12. Are there any non -SA classified waters within 50 feet of the wetted area? ❑ Yes or ❑ No
13. Are there any surface water diversions (i.e., drainage ditches) within 25 feet of the wetted area? ❑ Yes or ❑ No
14. Per the requirements in 15A NCAC 02H .0404(2)(7), how much green area is provided? ftZ
15. Is the green area clearly delineated on the plans? ❑ Yes or ❑ No
16. Is the sprav irrigation wetted area within 200 feet of any adjoining properties? ❑ Yes, ❑ No or ❑ N/A (i.e., drip irrigation)
17. Does the designed annual loading rate exceed 91 inches? ❑ Yes or ❑ No
FORM: WWIS 06-16 Page 13 of 12

Professional Engineer's Certification:
Cecil G. Madden, Jr. P.E. aucsl that this application for
(Professional Engineer's name from Application Item III, I)
Seaboard WWTP _
(Facility name from Application Item 11.1.)
has been reviewed by me and is accurate, complete and consistent with the information supplied in the plans, specifications, engineering
calculations, and all other supporting documentation to the best of my knowledge. I further attest that to the best of my knowledge the
proposed design has been prepared in accordance with this application package and its instructions, as well as all applicable regulations
and statutes. Although other professionals may have developed certain portions of this submittal package, inclusion of these materials
under my signature and seal signifies that I have reviewed this material and havejudged it to be consistent with the proposed design.
NOTE —In accordance with General Statutes la ti-_'i5.r'N and 14 __-i>.tili, 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.
r 9, North Carolina Professional Engineer's seal, signature, and date; x�qY
'��'
� �\I lId%�f f, III
FESSf •�� `
o'er;
a SEAL
16359
Applicant's Certification per 15A NCAC 02T M100t WI:
Geraldine Langford, Mayor attest that this application for
(Signature Authority's name & title from Application Item L3.)
Seaboard WWTP
(Facility name from Application Item II.1.)
has been reviewed by me and is accurate and complete to the best of my knowledge, 1 understand that any discharge of wastewater
from this non -discharge system to surface waters or the land will result in an immediate enforcement action that may include civil
penalties, injunctive relief, and/or criminal prosecution. 1 will make no claim against the Division of Water Resources should a condition
of this permit be violated. 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 the Applicant or any affiliate has not been convicted of an environmental crime, has not abandoned a wastewater facility without
proper closure, does not have an outstanding civil penalty where all appeals have been exhausted or abandoned, are compliant with any
active compliance schedule, and do not have any overdue annual fees per 15 A 0' 1 0105tc 1.
NOTE — In accordance with General Statutes 143-215.0.A and 1•J3-215.tsFs, 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.0Signature: 1 Date:
/
FORM: WWIS 06-16 Page 14 of 12

Waypoeinto
ANALYTICAL
114 OAKMONT DRIVE
GREENVILLE, NC 27858
TOWN OF SEABOARD (LAGOON)
BECKY TURNER
P.O. BOX 327
SEABOARD, NC 27876
Lagoon Uncontrol.
PARAMETERS #2
Drinking Water ID: 37715
Wastewater ID: 10
PHONE [phone]
FAX [phone]
ID#: 1255
DATE COLLECTED: 04/18/24
DATE REPORTED : 05/08/24
REVIEWED BY:
Infuent Effluent Analysis Method
Parshall After/Chlor Date Analyst Code
PH (field measurement), Units
6.5
6.5
6.8
6.5
04/18/24
NNK
4500HB-11
BOD, mg/l
34
107
44
17
04/19/24
BLV
521OB-16
COD, mg/1
119
04/19/24
JMS
H8000-79
Fecal Coliform (IVIF),cfu/100 mLs
100
04/18/24
AMC
9222D-15
Total Suspended Residue, mg/l
55
42
22
04/19/24
AMC
254OD-15
Total Suspended Residue, mg/l
31
04/22/24
AMC
2540D-15
Ammonia Nitrogen as N, mg/1
4.92
8.10
04/22/24
DRC
350.1 R2-93
Ammonia Nitrogen as N, mg/l
11.40
4.64
05/01/24
DRC
350.1 112-93
Total Kjeldahl Nitrogen as N,mg/1
5.70
11.20
04/25/24
DRC
351.2 R2-93
Total Kjeldahl Nitrogen as N,mg/1
14.76
10.24
05/02/24
DRC
351.2 R2-93
Nitrate Nitrogen as N, mg/l
<0.04
0.72
0.04
2.00
04/19/24
TRJ
353.2 R2-93
Total Phosphorus as P, mg/l
2.00
0.24
04/25/24
DRC
365.4-74
Total Phosphorus as P, mg/l
1.60
0.17
04/23/24
HMM
365.4-74
Oil & Grease (HEM), mg/1
<5.0
7.1
5.8
<5.0
05/01/24
BMD
1664B
Phenol, ug/1
TESTED
TESTED
TESTED
TESTED
Total Organic Carbon, mg/l
16.82
04/30/24
BLV
531OC-14
Chloride, mg/1
16
21
20
24
04/22/24
BNC
4500CLB-11
Total Cyanide, mg/l
<0.005
<0.005
<0.005
0.009
04/22/24
HMV
450OCNE-16
Total Dissolved Residue, mg/l
100
160
130
04/23/24
BNC
D5907-13
Total Dissolved Residue, mg/l
M 120
04/25/24
BLV
D5907-13
Arsenic, ug/l
<2.0
<2.0
<2,0
04/22/24
NAB
EPA200.8
Arsenic, ug/l
<2.0
04/25/24
NAB
EPA200.8
Calcium, ug/1
7014
04/26/24
MTM
EPA200.7
Cadmium, ug/1
< 1.0
< 1.0
< 1.0
04/22/24
NAB
EPA200.8
Cadmium, ug/I
< 1.0
04/25/24
NAB
EPA200.8
Total Chromium, ug/l
<5.0
<5.0
<5.0
04/22/24
NAB
EPA200.8
Total Chromium, ug/1
< 5.0
04/25/24
NAB
EPA200.8
Copper, ug/1
10
20
20
04/22/24
NAB
EPA200.8
Copper, ug/l
46
04/25/24
NAB
EPA200.8
Lead, ug/I
<5.0
04/25/24
NAB
EPA200.8
Lead, ug/l
<2.0
<2.0
<2.0
04/22/24
NAB
EPA200.8
Magnesium, ug/1
2304
04/26/24
MTM
EPA200.7
Mercury, ug/l
<0.2
<0.2
<0.2
<0.2
04/25/24
MTM
245.1 R3-94
All QC requirements were not met:
M Blank result
exceeded method constant weight criteria.
NO"I'k: Any rosult lislcd above aN "TfsS EIY Was sub -contracted to another laboratory The coriosponding iesults are attached

WayDnPA
ANALYTICAL
114 OAKMONT DRIVE
GREENVILLE, NC 27858
TOWN OF SEABOARD (LAGOON)
BECKY TURNER
P.O. BOX 327
SEABOARD, NC 27876
PARAMETERS
Molybdenum, ug/l
Molybdenum, ug/l
Nickel, ug/l
Nickel, ug/l
Selenium, ug/1
Selenium, ug/l
Silver, ug/l
Silver, ug/l
Sodium, ug/l
Zinc, ug/l
Zinc, ug/l
Temperature, °C
Sodium Adsorption Ratio (calc)
Drinking Water ID; 37715
Wastewater ID: 10
PHONE [phone]
FAX [phone]
ID#: 1255
DATE COLLECTED: 04/18/24
DATE REPORTED : 05/08/24
REVIEWED BY:
Lagoon
Uncontrol.
Infuent
Effluent
Analysis
Method
N2
Parshall
After/Chlor
Date
Analyst
Code
< 5.0
< 5.0
< 5.0
04/22/24
NAB
EPA200.8
<5.0
04/25/24
NAB
EPA200.8
< 10
< 10
< 10
04/22/24
NAB
EPA200.8
< 10
04/25/24
NAB
EPA200.8
< 1.0
< 1.0
< 1.0
04/22/24
NAB
EPA200.8
< 1.0
04/25/24
NAB
EPA200.8
< 1.0
< 1.0
< 1.0
04/22/24
NAB
EPA200.8
<1.0
04/25/24
NAB
EPA200.8
29506
05/06/24
MTM
EPA200,7
18
39
29
04/22/24
NAB
EPA200.8
105
04/25/24
NAB
EPA200.8
24
19
18
20
04/18/24
NNK
2550E-10
2.5
All QC requirements were not met: M Blank result exceeded method constant weight criteria.

Way
NALYTICAL
114 OAKMONT DRIVE
GREENVILLE, NC 27858
CLIENT: TOWN OF SEABOARD (LAGOON)
CLIENT ID:
BECKY TURNER
P.O. BOX 327
ANALYST:
SEABOARD, NC 27876
DATE COLLECTED:
DATE ANALYZED:
DATE REPORTED:
REVIEWED SY;
VOLATILE ORGANICS
EPA METHOD 624.1
Effluent
PARAMETERS, ug/l
After/Chlor
1.
Chloromethane
<10.00
2.
Vinyl Chloride
<10.00
3.
Bromomethane
< 10.00
4.
Chloroethane
<10.00
5.
Trichlorofluoromethane
<5.00
6.
1,1-Dichloroethane
<5.00
7.
Methylene Chloride
< 10.00 1
8.
trans-1,2-Dichloroethene
<5.00
9.
1,1-Dichloroethene
< 5.00
10.
Chloroform
< 5.00
11.
1,1,1-Trichloroethane
< 5.00
12.
Carbon Tetrachloride
<5.00
13.
Benzene
<5.00
14.
1,2-Dichloroethane
< 5.00
15.
Trichloroethene
<5.00
16.
1,2-Dichloropropene
< 5.00
17.
Bromodichloromethane
<5.00
18.
2-Chloroethylvinyl Ether
<5.00
19.
Cis-1,3-Dichloropropene
<5.00
20.
Toluene
8.30
21.
trans-1,3-Dichloropropene
< 5.00
22,
1,1,2-Trichloroethane
<5.00
23.
Tetrachloroethene
<5.00
24.
Dibromochloromethane
<5.00
25.
Chlorobenzene
<5.00
26.
Ethyibenzene
< 5.00
27.
Bromoform
<5.00
28.
1,1,2,2-Tetrachloroethane
<5.00
29.
1,3-Dichlorobenzene
<5.00
30.
1,4-Dichlorobenzene
< 5.00
31.
1,2-Dichlorobenzene
<5.00
32.
cis-1,2-Dichloroethene
<5.00
Drinking Water ID: 37715
Wastewater ID: 10
PHONE [phone]
FAX [phone]
1255
BLD
04/18/24
04/19/24
05/08/24

Waylpoirto
CHAIN OF CUSTODY RECORD
Waypoint Analytical - Greenville
Page I of 2
114 Oakmont Dr.
Greenville, NC 27858
DISINFECTION
CHLORINE CHECK (LAB)
www.WaypointAnalytical.com
<0.5 mg/L - Yes (Y) or No (N)
Phone [phone] - Fax [phone]
Ij CHLORINE
CLIENT: 1255
Week: 25
Or
Pr 1�r 1>
pH CHECK (S.U.) (LAB)
Ij UV
vr)-
Tr)1,VN OF SEABOARD (LAGOON)
NONE PP 1
11 1" P F
P P G G P
F,
P P, P CONTAINER TYPE, PIG
BFCKY TURINEER
P.O. BOX 327
SEABOARD NC 27876
Ll A A C
G A C C
A C C C C
A,
D A A CHEMICAL PRESERVATION
_ z
V) A -NONE D-NAOH
[phone]
E
Lj LU cz
CID B -HNO, E-HCL
c j Lj! LU
c 0 a: LD
00 9 b
7; C-HSO, F -ZINC ACETATE/NAOH
COLLECTION
_j 0
'8, a- 0 0
L 5
7 -
E L.
C�
_
Cr G - NATHIOSULFATE
SAMPLE LOCATION
DATE TIME
u-
0 LU cm)
a
S;
L
F �:
L' CI a-
✓ Untreated Lffluent
CLASSIFICATION:
Lagoon #2
11
WASTEWAT ER(NPDES)
Infuent Parshall
11 _;9 nt
DRINKINGWATER
Effluent After/Chlor
ffl
4411 ]VIL F
-Z D 23
d
DWR/GW
SOLID WASTE SECTION
CHAIN OF CUSTODY (SEAL) MAINTAINED
DURING SHIPMENT/DELIVERY
c-_y::) N
SAMPLES COLLECTED BY:
(Please Print) € 4 keld
SAMPLES RECEIVED IN LAB AT 3 q 'C
RELINOUISHEDBY (SIG)S�AMPLER)
DATETIME
t1qzil
REC WEDBY IG.) L(41'TEJ11 E
COMMENTS:
NO
SAMPLES RECEIVED ON ICE(t�
RELINQUISHED BY (SIG.)
DATErRME
I
RECEIVED BY (SIG.)
DATEfnME
I
RELINQUISHED BY (SIG.)
DATEMME
RECEIVED BY (SIG.)
DATEMME
PLEASE READ Instructions for completing this form on the reverse side.
Sampler must place a "C" for composite sample or a "T for
FORM #5
Grab sample in the blocks above
for each parameter requested.

Waypoirt'a
Waypoint Analytical - Greenville
114 Oakmont Dr.
Greenville, NC 27858
www.WaypointAnalytical.com
Phone [phone] - Fax [phone]
CLIENT: 1255 Week: 25
TOWN OF SEABOARr) 0,AGOON)
13EC KY TURNER
P.O. BOX 327
SEABOARD NC 27876
[phone]
SAMPLE LOCATION
Untreated Effluent
Lagoon #2
Infuent Parshall
Effluent After/Chlor
COLLECTION
DATE TIME
CHAIN OF CUSTODY RECORD
DISINFECTION
CHLORINE
UV
NONE
P
P
I
G
G
G
G
G
G
G
G
A
A
/k
A
A.
A
A
A
0
E
�3 0
LU Lu U) Cr
z
C,
e�
cc Zi Lj w
00 cr: 0 z
0
7'
>
�z LU 0
0) EL 0
7
<
R -0 w Q O*V
cr
64_
2 3
RELINQUISHED I1;Y11;G7)(SAMPLER) DATE hME RERD MB(SIG.)
A-kA_
RELINQUISHED BY (SIG.) DATE/TIME RECEIVED 6Y (SIG.)
RELINQUISHED BY (SIG.) DATE/TIME RECEIVED BY (SIG.)
I
I DATETM�—o COMMENTS:
/NWALA
DATEI)TIME
OATElTIME
I
Page 2 of 2
CHLORINE CHECK (LAB)
<0.5 mg/L - Yes M or No (N)
pH CHECK (S.U.) (LAB)
CONTAINER TYPE, PIG
CHEMICAL PRESERVATION
co A -NONE
D-NAOH
cn
B-HNO,
E-HCL
Cf)
cr
V_u C-H,SO,
F -ZINC ACETATE/NAOH
LU
G - NATHIOSULFATE
CLASSIFICATION:
JWASTEWATER(NPDES)
jDRINKINGWATER
U DWR/GW
JSOLID WASTE SECTION
CHAIN OF CUSTODY (SEAL) MAINTAINED
DURING SHIPMENT/DELIVERY
CD N
SAMPLES COLLECTED BY.
(Please Print) ("i It lkn d )V_ttl�
SAMPLES RECEIVED IN LAB AT �, 7 OC
SAMPLES RECEIVED ON ICE: (Y?E - NO
I PLEASE READ Instructions for completing this form on the reverse side. Sampler must place a "C"for composite sample or a "G" for
FORM #5 Grab sample in the blocks above for each parameter requested.

W_Mypoint
ANALYTICAL
5/3/2024
VVaypointAnelytioa|-GreenvU|a
RomBoquist
114Oakmont Dr
Greenville, NC, 278SO
Ref Analytical Testing
Lab Report Number: 24-i17-OiG2
Client Project Description: Analytical Testing
2790Whitten Road, Memphis, TNso133
Main oV1,2z3.24ou°Fax yoz.21s.244o
Dear Ron Boquist:
VVaypoinLAnalytical, LLC.received eamp|e(s)on4/26/2O24for the analyses presented inthe following report,
The above referenced project has been analyzed per your instructions. The analyses were performed in
accordance with the applicable analytical method. Where the laboratory was not responsible for the sampling
stage (refer to the chain of custody) results apply to the sample as received.
The analytical data has been validated using standard quality control measures performed as required by the
analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all
parameters (NELAP and non-NELAP) were performed in accordance with guidelines established by the USEPA
(including 40 CFR 136 Method Update Rule May 2021) and NELAC unless otherwise indicated. Any parameter
for which the laboratory is not officially NELAP accredited is indicated by a' —'symbol. These are not included in
the scope because NELAP accreditation is either not available or has not been applied for. Additional
cerdfioationsmay beheld/are available for parameters, where NELAPaccreditation ianot required nrapplicable,
Afull list ofcertifications imavailable upon request.
Certain parameters (chlorine, pH, dissolved oxygen, sulfite ... ) are required to be analyzed within 15 minutes of
sampling. Uaua|ly, but not akwaya, any field parameter analyzed at the laboratory is outside of this holding time.
Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matricesensnaportedononaa-
reow(vedbaoisun|eaooUhenwiseindicabed.Thenaportohm||notbereproduoadexcaptinfu||andrelotesonlyto
the samples included inthis report.
Please dVnot hesitate tocontact mmorclient services ifyou have any questions orneed additional information.
Sincerely,
1J
Andrea RBrownfield
Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

Wavpoint'
Ar
2790 Whitten Road, Memphis, TN38133
Main 901.213.z40o"fax 901.2z3.z44o
www^wmypo|onsna/ytica|.cmm
Certification Summary
State
Program
Lab ID
_Expiration Date
Alabama
State Program
40750
02/28/2025
Arkansas
State Program
88'0650
82070025
California
State Program
2904
06002024
Florida
State Program -NELAP
E871157
08/302024
Georgia
State Program
C044
11/14/2025
Georgia
State Program
04015
06/30/2024
Illinois
State Program NELAP
200078
1001/2024
Kentucky
State Program
80215
06002024
Kentucky
State Program
KY80047
1201/2024
Louisiana
State Program 'NELAP
LA037
12/31/2024
Louisiana
State Program NELAP
04015
0600/2024
Mississippi
State Program
MG
11/14/2025
North Carolina
State Program
47701
07/81/2024
North Carolina
State Program
415
12/31/2024
Pennsylvania
GtatePmgmm-NELAP
08'03195
0501/2024
South Carolina
State Program
84002
08/30/2024
Tennessee
State Program
02027
11/14/2025
Texas
State Program 'NELAP
T104704180
09/302024
Virginia
State Program
00106
06/80/2024
Virginia
State Program NELAP
400181
09/14/2024
"--- '^" nnon,m^-1,,J)`p0

Aw%k 0 M a 2790'Whiden Road, Memphis, TN 38133
Way i PI It Main 901.213.2400 0 Fax [phone]*440 OTICAL www.waypointanalyticaLcorn
Sample Summary Table
Report Number:
24-117-0162
Client Project Description:
Analytical Testing
Lab No Client Sample ID
Matrix
Date Collected
Date Received
82260 Untreated Effluent
Aqueous
04/18/2024 10:31
04/26/2024
82261 Lagoon #2
Aqueous
04/18/2024 11:21
04/26/2024
82262 Influent Parshall
Aqueous
04/18/2024 10:32
04/26/2024
82263 Effluent After/Chlor
Aqueous
04/18/2024 12:12
04/26/2024

8
Waypoint,
ANALYTICAL
32064
Waypoint Analytical - Greenville Project
Ron Bocluist
114 Oakmont Dr Information
Greenville , NC 27858
Report Number: 24-117-0162
Lab No : 82260
Sample ID : Untreated Effluent
Test
Phenols (Total)
27$t} Whitf6ri'itoaci, Memphis, TN 38133
Main 901.213.2400 a Fax 90L213.2440
www.waypo intonalytical.com
Analytical Testing
REPORT OFANALYSIS
Results Units MQL
<0.050 mg/L 0.050
Report Date : 05/03/2024
Received : 04/26/2024
Andrea R. Brownfield
Project manager
Matrix: Aqueous
Sampled: 4/ 18/ 2024 10:31
.......................................
DF Date I Time By Analytical
Analyzed Method
1 05/02/24 10:45 JRZ EPA-420.1
Qualifiers/ OF Dilution Factor MQL Method Quantitation Limit
Definitions

a Q)
Wind.
ANALYTICAL
32064
waypoint Analytical - Greenville Project
Ron Boquist
114 Oakmont Dr Information
Greenville , NC 27858
Report Number: 24-117-0162
Lab No : 82261
Sample ID : Lagoon #2
Test
Phenols (Total)
279011+/hitt�n Road, Memphis, TN 38133
Main 901,213,24001 Fax [phone]
www.waV.pointanalytical.com
Analytical Testing
REPORT OFANAL YSIS
Results Units MQL
<0.050 mg/L 0.050
Report Date : 05/03/2024
Received : 04/26/2024
11 1�
ilf'tl.�'
Andrea R. Brownfield
Project manager
Matrix: Aqueous
Sampled: 4/ 18/ 2024 11:21
DF Date / Time By Analytical
Analyzed Method
1 05/02/24 10:45 JRZ EPA-420.1
Qualifiers/ DF Dilution Factor MQL Method Quantitation Limit
Definitions

Way
RTICAL
32064
Waypoint Analytical - Greenville Project
Ron Boquist
114 Oakmont Dr Information
Greenville , NC 27858
Report Number: 24-117-0162
Lab No : 82262
Sample ID : Influent Parshall
Test
Phenols (Total)
2790 Whitten Road, Memphis, TN 381.33
Main 901.213.2400 ° Fax [phone]
www.waypointanaly.tical.com
Analytical Testing
REPORT OFANALYSIS
Results Units
<0.050 mg/L
201!
0.050
Report Date : 05/03/2024
Received : 04/26/2024
Andrea R. Brownfield
Project manager
Matrix: Aqueous
Sampled: 4/ 18/ 2024 10:32
DF Date / Time By Analytical
Analyzed Method
1 05/03/24 10:30 JRZ EPA-420.1
Qualifiers/ DF Dilution Factor MQL Method Quantitation Limit
Definitions

Way
RTICAL
32064
Waypoint Analytical - Greenville Project
Ron Boquist
114 Oakmont Dr Information ;
Greenville , NC 27858
2790 Whiften Road, Memphis, TN 38133
Main 901.213.2400 0 Fax [phone]
www.waypointanalytical.com
Analytical Testing
Report Number : 24-117-0162 REPORTOFANALYSIS
Lab No : 82263
Sample ID : Effluent After/Chlor
Test Results Units MQL
Phenols (Total) <0.050 mg/L 0,050
Qualifiers/ DF Dilution Factor
Definitions
Report Date : 05/03/2024
Received : 04/26/2024
yv
r
Andrea R. Brownfield
Project manager
Matrix: Aqueous
Sampled: 4/ 18/ 2024 12:12
DF Date / Time By Analytical
Analyzed Method
1 05/03/24 10:30 7RZ EPA-420.1
MQL Method Quantitation Limit

(2)
Waypoint,
ANALYTICAL
2790,Whitten Road, Memphis, TN 3$.133
Main 901.213.2400 0 Fax [phone]
www-.waypointa nalytica I. com
Quality Control Data
Client ID:
Waypoint Analytical - Greenville
Project Description:
Analytical Testing
Report No:
24-117-0162
QC Analytical Batch:
L748185
Analysis Method:
EPA-420.1
Analysis Description:
Total Recoverable
Phenolics
Lab Reagent Blank
LRB
Matrix: AQU
Associated Lab Samples:
82260, 82261
Blank
MQL
Analyzed
Parameter
Units
Result
Phenols (Total)
mg/L
< 0.050
0.050
05/02/24 10:45
Laboratory Control Sample
LCS
Spike
LCS
LCS %Rec % Rec
Parameter
Units
Conc.
Result
Limits
Phenols (Total)
mg/L
0.800
0.786
98.0 90-110
Duplicate
G 97296-DUP
Result DUP
RPD
Max RPD
Analyzed
Parameter
Units
Result
Phenols (Total)
mg/L
< 0.050 < 0.050
0.0
20.0
OS/02/24 10:45
Matrix Spike
G 97296-MS
MS Spike
MSD
MS Result
MSD MS %Rec Max
Parameter
Units
Result Conc.
Spike
Result %Rec Limits RPD
Conc.
Phenols (Total)
mg/L
< 0.050 0.800
0.780
98.0 70-130
Date: 05/03/2024 04:07 PM Paae 1 of 2

Way
hitten Road, Memphis, TN 38133
2790 Whitten
It,
R
Main 901.213.2400 1 Fax [phone]
A LYTICAL
www.waypointanalytical.co'm
Quality Control Data
Client XD-.
Waypoint Analytical - Greenville
Project Description:
Analytical Testing
Report No:
24-117-0162
QC Analytical Batch:
L748462
Analysis Method:
EPA-420.1
Analysis Description,
Total Recoverable Phenolics
Lab Reagent Blank
LRB
Matrix: AQU
Associated Lab Samples:
82262, 82263
Blank
MQL
Analyzed
Parameter
Units
Result
Phenols (Total)
mg/L
< 0.050
0,050
05/03/24 10:30
Laboratory Control Sample
LCS
Spike
LCS
LCS %Rec % Rec
Parameter
Units
Conc.
Result
Limits
Phenols (Total)
mg/L
0.800
0.786
98.0 90-110
Duplicate
L 82392-DUP
Result DUP
RPD Max RPD
Analyzed
Parameter
Units
Result
Phenols (Total)
mg/L
< 0.050 < 0.015
0.0 20.0
05/03/24 10:30
Matrix Spike
L 82392-MS
MS Spike
MSD MS Result
MSD IVIS %Rec Max
Parameter
Units
Result Conc.
Spike
Result %Rec Limits RPD
Conc.
Phenols (Total)
mg/L
< 0.050 0.800
0.773
97.0 70-130
Date: 05/03/2024 04:07 PM Pace 2 of 2

``
1
w '
w~��" �W���' zzno mmm�n Road, Memph6'Tw3uz3a` ` `
�� ����|�� ���- w�"�o�zzy.�wm"�neo���a�44o� `
w� PA.-- -- /�A[Y7|�AL www.wavpomtaoakoca|.cum
Shipment Receipt Form
Customer Number: 3208
CustomerNama: WmypoN|Analytical -Greenville
Report Number: 24-117-0162
Shipping Method
0Fed Ex [lU8Postal /lLab
#UPG 0CUont 0Cooher
�
Shipping oohtainencoo|erunoompromisad? (
Number ofcoolers/boxes received |
Custody seals intact onshipping ounta}nor/000|er? (
Custody seals intact onsample bottles? (
Chain ofCustody (OOO)present? (
DOCagrees with sample |aba|(a)? (
OOCproperly completed (
Samples inproper containers? (
Sample containers intact? (
Sufficient sample volume for indivatedtoat(e)? (
All samples received within holding time? (
Cooler temperature incompliance? (
Cooler/Samples arrived at the laboratory on ice. (
Samples were considered acceptable oacooling
process had begun.
De Yes
0Cther: |
Thermometer ID: F1211
0Nu
0No Not Present
/lNo Not Present
( )No
[lNo
(]No
0Nu
0No
( )No
[)No
[)No
0No
Water-Samplacortaimerspropedypes*med
* Yes
0 No
0 N/A
Water ' VOA vials free ofhoadspace
0\es
0No
N/A
Trip Blanks received with \kDAu
0Yea
0No
N/A
Soil VOA method 5835—compliance criteria met
0Yea
/lNn
N/4
[— High concentration container (48hh
F— Low concentration
EnConasamplers (48hr)
[— High concentration pre -weighed (methanol 14d)
F— Low conc
pre-weighed
vials (Sod Bin 14d)
Special precautions orinstructions included?
0Yen
*No
Comments: --

10
0
VaypcAnt_0
u M.
if.aYPIDjut Analytical - Greenville
14 Oak -moat Dr.
hrznvillir, NC 27858
iww.WaypointAnalytical.com
'hang [phone] - Fax [phone]
MMNT: 1255 Week- 25
-f —6 ,:, e-
'QUW IF SEABOARD (LAGOON)
ECKY TURNER
.0. BOX 327
EABOARD NC 27876
152) 5$95061
COLLECT)ON
SAMPLELOCATION OM
TIME
Untreated Effluent �Ifvj
Lagoon #2
InAtent Parshafl
to,
Effluent After/Chlor
-F, W /. Z Cd
CHAIN OF CUSTODY RE CORD
DISINFEcnON
UCHLORINE
UV
VC76
NONE
of E
z
9
rn
Uj
0
y.
'7
z D
O. Or o- Pr
,4-*.17_�j162
32064
04-26_2(j24
M
10
Page - I (
CHLORINE CHE
<0.5 mg/L - Yes C
pH CHECK (S,U
lfwGqX_1T1kTWq2�9
A - NONE
Uj
Uj
tz 5 - KNO,
Cn
cc
U.1
Uj I.— C - �so.
CC
ME
IUWA
Lj DR[
U DW
Lj SO1.
CHAIN OF CUSI
D G S URI N
SOW ES RECFJ
BY $ajPMRHq DATEftlME I
;ffy TT I SAM'PLES RECE
AA/
w-rl -
DMEMM RECEIVED BY (SIG,) DATEFhME
7/7 " y (s OF [�:oo V I
RED Y"EIS (SIG) DATENE TF1fUr1E SUBBED TO MEMP
" 2r/
Sampler must place a -u, Tor composite sample or a -u,, Tor
PLEASE READ insttudions for COMDletinG thiSfOr'm on the reverse side. I . . - .. . I I

Seaboard WWTP
Supplement to Design Basis
Addressing Effluent Storage Calculations and Irrigation Pumps
Per the Additional Information Request
Contract No. 30 — WWTP Improvements
WQ0003299
DWI Project No. VUR-W-ARP-0003
I
M
1
INC.
Cecil G. Madden, Jr., P.E.
September 9, 2024
McDAVID ASSOCIATES, INC.
Corporate License C-131
P.O. Box 1776
Goldsboro, NC 27533
Tel: [phone]
Fax: [phone]
HC R
;a SEAL
16359 _

EFFLUENT STORAGE STRUCTURE VOLUME CALCULATIONS
The intent of the new Effluent Storage Structure is to replace the existing single cell structure with a new
dual cell structure with the same capacity.
The proposed new Effluent Storage Structure consists of a North Storage Structure and a South Storage
Structure. The top of the dike of each structure is elevation 123. Each structure has a freeboard of 3 feet,
therefore the maximum water level in each structure is elevation 120. Each structure has a minimum
water level of elevation 116. The bottom elevation in each structure is elevation 113.
The "effective volume" was calculated with AutoCad software based on the volume of water between
maximum water level and minimum water level.
For the North Storage Structure, the AutoCad software first calculated the -total water volume in the
structure based on the maximum water level of 120, which was 31,443.33 CY, or 6,351,144 gallons
(31,443.33 x 7.481 x 27). Next, the volume of water between the minimum water level of 116 and the
bottom of the structure (elevation 113) was calculated to be 12,880.49 CY, or 2,601,692 gallons
(12,880.49 x 7.481 x 27). To determine the "effective volume" the water volume beneath the minimum
water level (2,601,692 gallons) was subtracted from the total volume of water in the structure (6,351,144
gallons): 6,351,144 - 2,601,692 = 3,749,452 gallons. Based on a design flow of 134,000 GPD, the
detention time amounts to 27.98 days.
For the South Storage Structure, the AutoCad software first calculated the total water volume in the
structure based on the maximum water level of 120, which was 31,846.40 CY, or 6,432,559 gallons
(31,846.40 x 7.481 x 27). Next, the volume of water between the minimum water level of 116 and the
bottom of the structure (elevation 113) was calculated to be 12,994.50 CY, or 2,624,720 gallons
(12,994.50 x 7.481 x 27). To determine the "effective volume" the water volume beneath the minimum
water level (2,624,_720 gallons) was subtracted from the total volume of water in the structure (6,432,559
gallons): 6,432,559 - 2,624,720 = 3,807,839 gallons. Based on a design flow of 134,000 GPD, the
detention time amounts to 28.42 days.
The total effective volume amounts to 7,557,291 gallons (3,749,452 gallons + 3,807,839) which provides
a detention time of 56.40 days.
For comparison, the existing Effluent Storage Structure has an effective volume of 7,425,000 gallons
(volume taken from Permit Mo. WQ0003299 and from sheet 4 of 10 from the original construction plans
dated August 5, 1997) which amounts to a detention time of 55.41 days.
Screenshots of the AutoCad calculations for the North and South Effluent Storage Structures are provided
on the following pages.
W:\D10XX_GEN\D100X_MSW\Dl005_CORRES_MSW\CGM\2024\SEABOARD WWTPDESIGN\SEABOARD EFFLUENT STORAGE
STRUCTURE VOLUME CALCULATIONS - FTL-SEPT9-2024.DOCX
September 7, 2024

P Surface properties - North Pond -Effective Volume Top.-: -
Information D�f,r4i Or'l ArOysis Statistics
Statistics . . .. ... ..... . . .. .......
Value
..... ...... . . ..... ........... ..... . .. . . .. .... ......... . . . . ..... ........ . ....... .....
General ...... . .......
. ... . ......... ---------
ED TIN
. .. . . ....... . ........ .. . ......... . . ...
8 Volume ...........
. . ....... . .. . ......... . . . ...... ......
. . . . ...................... . ... . . .....
Base Surface
PG -Ponds
- - - - ----------- — ---------- - - ... . ........... - ---------- ..... . ..... . . .. ...
- -------- . ........... . . - ------- - - ---------_- - ------------------ . . . . ................ ............ . . ........ .
a Comparison Surface
. ... .........
North Pond - Total Water Volume
Cut Factor
1.
...............
Fill Factor
...... -------------- - -
— — -------
. - ----- - — ---- - --
Cut volume (adjusted)
OM Cu. Yd.
- -- - ------
Fill volume (adjusted)
3144333 Cu. Yd.
Net volume (adjusted)
31443-33 Cu, Yd. <Fill>
Cut volume (unadjusted)
0.01) Cu. Yd.
Fill volume (unadjusted)
. . ........ . .......... . ­­..___________­­_­ -------- - . .......
314433 3 Cu. Yd,
- --- ---- ------------ . . . . . . ............
Net volume (unadjusted)
31443.33 Cu, Yd. <Fill> ..... . ....
k-,

C Surface Properties - North Pond - Effective Volume Bottom
Information # Definition I Analysis statistics
Statistics
... ...... Value
_
r1 General _ .............__........ _...._........ _......_.........
.. .. _ . _._ ...
_.._.._._.;....._.__..._..............._.. _.._... _........... -... ...__...._._ _.......... __... __....__._.........__.__...................__.._.
Ei TIN
............. ............ ........_... ... ......... _..................... ... ......._...._...,..................._..._......_ ._........._..._..,........._.
C-i Volume
............................ __......_.................................................._............... _....._..._..._._.... _......... _......
_............. .... .......... .......... ......._.....:................................._..._.............._................................_.__...................._..,........_.................._...................................._..................._._..,._,_...,.............._............._.
_........._............... _ ........ _._..._. _ ....... __..__......_...... ... ......................_..-_............... ..._..................... ......._.......... .................. ... ... ... .......... _............. ._....._._..._.._._........._.......... ..........-....:
Base Surface
_... _....__..._...._..._...... _.. _......... _ ..........._...._............
PG -Ponds _............................_ .......... __....... _....._.._ ..... .
_............_..._............._._._.........._.....:................_......................................_.. _... _.............._ ............................._..........
Comparison Surface
......................._...................._._.................._............_..................._...__......._._......_..........._..._.................__...._........................_..............................._..............._..._.........,..................._..................._._.._.,
North Pond -'Water Volume Belmoy Minimum Water Level
................ _..._.......... .......... .............. ..._.....__...._.._....._._......_.......... ........... ._....:
Cut Factor
4.000
Fill Factor
............................................ ...................................._.._._._._.........._............._....._....... _......................................_
'IDOO
-------- _.........__._.......... _............. ...._.....__... ... ................ _._._....................................... _... _.... _......... ._.......... ........................... ............ _..._........................... _._..... _............... ..... .............. ........... ......
Cut volume (adjusted)
............................................. ......_......._........................ _...._._.........._..... ......_......._..._...._......................_............
0.00 Cu. Yd.
... _.......... ......_...._.............._._........................................ _._..........._......................._...._._._._...._...._._..................._........................_...._.................................._.............................. __... .....................
Fill volume {adjusted)
_....._........._......................_.........._.............................._.............................._...._.._...........
'12880.49 Cu. Yd.
_..__......................_._........._........................ _.............. _ ........_._........_._..... _. _ ......._.................................._ _ ._....._._........................_.........
Net volume (adjusted) ..._....-_............._.._..__...._........._...---.........__._..........
12880.49 Cu, Y...d_.......<n_.F_i_l_l.._>
_........-.........._......_...,_........_........._........_,.._._................_......._._........_.....__..._......._........._.................._._....._ ........._._....
Cut volume (unadjusted)
............................__._._.._........._..........__..._....._...
_........._....... 0.00 Cu. Yd. . .._......._....__._..........._..........._...._......._............._..............._._...._....._..._....._
............... ..............._--
Fill volume unadjusted_...................__...._....._..._.._..._...__..._....
_..12880.49 Cu.
_.....................__.__..__..._.._._..._...._--...--...__............_...._...._............. ............. ................_.__._._._.......... _...
Net volume (unadjusted)
12880.49 Cu. Yd. <Fill>
OK ........... Apply Help
_...__.._._.........._.._...._.
u

Surface Properties - South Pond - Effective Volume Top © X
7nEormafian DefmitiQn l Analysis Statistics
Statistics
Value
General .....__
...........
c' TIN
..... ..... ........................ .........._._.........__......._.................._....._.................................................._.................._..._..........._..._..............._.....
... ...._... _..........,.... _....,._..., ......,..._.......... .__....................._.._._...__.........-.-.._....... _................_...._................._......_._......_._..__............_.........................,._.........._...,..__.....
G Volume _..._._............_.........._._._......._..... ............................................................_._......._......_......_.__...._..._.............._....__....._.....1._.................._......._...............................-_-........._........_........._......_..............._......_......................._....._._.....__...................
_........................._....._........-------- ..._.._..._....._........._............_................. .....__.._...._..........._.... _......._... ......__._._._.:
Base Surface
__......._.............
PG -Ponds
............. ............. ............... ............ ...... _._....... _ .................. ............ __......... _._....... __.............. .........................._.......... ......... ..... ................. ................ ............._. _........-._._................ ...... ......._...............
Comparison Surface
South Pond -Total hater Volume
Cut Factor
...... ... .._...__.................._.__..._......................................-_........_.__.._...__.............._....._.,.
I DOO
.._...-..__....._......__.......... __.._..__..._.... ........... _......._..._......... _... ...... ....._..._.....__-................
Fill Factor __.._......_.__........................
........ __.._..._.._...._.
I DOD
....... .._._.............._...__...._.._..,.._._._.._..._..._.._._..__._....
Cut volume (adjusted)
......_....__......_.........._.._....__.......--....._.-.._.......... ....................-........-_-._...._..._.......__......_........_.._.__...._...._._...._...........
------ ---- .._...._..... ..... .... .........__...._..___.._............ ......... --_......_........._.......... ....... _._.............. .... .._.._...._._.._.--... :
D.DO Cu, Yd.
_._._._._._........,.........._.......__._..................-._..._......_.__....._........_..__................... .._............._.._.......... ..... ........._............ .... .......... ......... ._.._.__........._......._..
Fill volume (adjusted)
...............__... .._.____................____._.__.......___..._..._......__........__..__--_--_...________..___......._.__.................-..._...__..,..._...._........_._.._._.._.........._..__..____...___.-__--._..__.-_..__..___..__.._.._....__._..._.............._...._.....__._........._...._..__._...._.__._......._._......__.__.._._:
31846.4D Cu. Yd.
Net volume (adjusted)
_.............._.._,_.._,_._,..,_...._,....,....__.._.......__...,...,...,
................. 31846.39 Cu. Yd.<Fill>
..,._._.._..._,,.._........_.._.,.......,.........__..................:..........._.......,...,..._._..,_.,....................._.....................__...............x
Cut volume (unadjusted)
_........... _.............. ...................... ._........ ...... ......... ........ ....... _.......... ._......_.___........._.._.............._...._.............................
0.00 Cu. Yd.
..........__......._............_.......... ._....,_................ __...._....... _............ _......... .._..........._........ ._.............._................... ,..... _....... ............... ... ..... .._....-.._.............. .._....... ........... ...... _..... .............
Fill volume (unadjusted)
_........_.._............_._. _...... _.. _..... _ ......... _..... . ......._..._............_._._.._......._........._..................._......_..........._.................._.......
31846.40 Cu. Yd.
_.............-_-._...._.........................._............ __............. ................... _._..._.............._......_.......................__......_................_..
Net volume (unadjusted)
31846.39 Cu. Yd. <Fi€l>
4K Cancel Apply Help
.._ ...

Surface Properties -South Pond -Effective Volume Bottom
Information Definition l Analysis Statistics
❑10-1
Statistics
Value
G General
_..................._ ......_......................................................
_........................._....r_............_......._......................_....
G:TIN
...._.... _......_......................_.._.................._..._...._..............._..__....__.._._...._......`
_...__....__,._............................. ... ... ....._.. ... .. .... _.......
G Volume _... ................ ............. ......... ..........._....................... ......................._.............. ..... __............_............._.._.__
_....._ _. ......................__........... ....... _..........._..__._..._.__.._.......................................... ....._.._...... ...... __....................... ..........__.......,.......... ........ ..._..............._ ...__...
................ ... _........... _.........
Base Surface
........_..... . .................. _......_..._....._...... _.......... _.................... ...._....... __.._....... .......__._.....
_....................... _.... _... ........ ...._...._...._.._........_.__....._._........... ................. ... ..__.................... .......... __............... .................... ..._..........................._._
PG -Ponds
...__....._._....._........... .......... ...... _.......... ._.. ...... ......... ................. _... _........... .. _....._..............__................... ..............__..............._._................._................
Comparison Surface
_._............._..........._........ ... _._ _....... .......... _.... _.................
_.... ... _.._
South Pond - Water Volume Below Minimum Water Level
........ _.._ ...... ................... _......._..............._... .................._._........_..__.................._.._........_.......... ......
Cut Factor
1,OGO
Fill Factor
........... ............_.................... ..... ..._..........._...__...._........................._............
1.000
............ .............._...........
Cut volume (adjusted)
........... ................._........._.............................. _............................................_.........._............................
......._.....__...__............................_............................_............................................ _.................. ..... _...... ..... ..........._....._.._.._....._._.....
0.00 Cu, Yd.
.................... ... _..........................................................._.............................................._......... ....... ... .......................... _......................
Fill volume (adjusted)
_....................................... ...................................................._........_....__... ._.___
................................... ....._...................................._................ _..
`12944.50Cu. Yd.
...__............._..._._..._............. ................... .._........................................._......._................._.............. ....... ............_.........................._....__...................................... ..._...._.........................
Net volume (adjusted)
........
12944.50 Cu. Yd.<Fill>
Gut volume (unadjusted)
__..._...._....... ...........-..._.._.._...... ... ....__......_......_ .......... ......._..._.._...... .........._......__.._
0.00 Cu. Yd.
_.._...._........_.............. _... _......... _..._........_.................
Fill volume (unadjusted)
_...._... _........................._.........------------_....__._.............._.
_...... __._.............,_.._._.___._...__._......__._..__._._..._.._..._............__...._........._.._..
12944.50Cu. Yd.
__..._........._......._...._.....-...._.._...._....................... _._... ___._...._..__...._.._....._....._- ----- _...............__...._..... _ _............... _._........__........._..........
Net volume (unadjusted)
_ _..... ......... ...... .... ............
12944.50 Cu. Yd.<Fiii>
OK Cancel Apply FWp
.......__............._...........__......._......................__............'............_... ............................... f

Irrigation Pumns Design
- Three Irrigation !'gelds with 91 sprinklers each.
- Flow rate = 235 gpm per field.
- Flow per sprinkler = 235i91 = 2.58gpm
- Design for sprinkler locution with greatest head loss (Field No. 2)
Sprinkler located on second TOW from access road at end of 1.5" pipe at ground elevation of 133
ft.
Static Head
- High Paint = Ground Flev (133') + Miser Height (3) = 136'
- Low Point = Minimum Water level in Storage Structure = 116.0
Static Head = 20'
Friction Head
- C = 120 for all calculations.
mn
Ruu
7N-ne
Quantity ( (In.1
Equiv.Lenpth (Ft.)
1 Pipe_
_ 1,180 4
6 _.a 1,180
450
3 ;
24
900
2 {
32
6x6 Tee
2
33
{ 6.x4 Reducer
1
40
{ 6" Check Valve
1
i
52
6" Cate Valve
3
66
{ 6" Meter
1
10
Subtotal Fquivalent
lxngth =
1 1,437
Q= 235gpm
Head loss = 8.46'
2 I Pipe , { 330 1 4" i± 330
900 { 1 ; 10
Subtotal Equivalent length = I 340
Q= 62 Kpm-
Head loss = 1.22'
3 1 Pipe 1301 4 330
901, 1 { 40
Subtotal Equivalent length = "I
Q= 46 .gpm (I8 Sprinklers)
Head loss = .35'
Irrigation P:unip W, ign.do"
240411
W:\D10XX_GEN\D100X_MSW\DI005 CORRES MSW\CGMi2024\SEABOARD WWTP DESIGN\SEABOARD DESIGN ASSUMPTIONS
M REVISED AY 1 2024.DOCX

Dia Equiv.Length
Run Type Quantity 111.) (Ft.)
4 1 Pipe ' 201 1.5 20
Subtotal Equivalent Length = 1 201
Q= 10 gpm (4 Sprinklers)
Head loss = .29'
5 1 Pipe 1 40 1.51 40
Subtotal Equivalent Length = 1 40
Q= 8 gpm
Head loss = .39'
6 1 Pipe 1 40' 1.5 1 40
Subtotal Equivalent Length = i 40
Q= 5 gpm (2 Sprinklers)
Head loss = .16' 1
7 1 Pipe 1 7V 1.5 1 75
Subtotal Equivalent Length = 75
Q= 3 gpm (One Sprinkler)
Head loss = .12'
1 Pump Discharge
8 1 Head - 6"_.30
Subtotal Equivalent Length = 30
Q= 62 gpm
Head loss = 1.22'
9 1 Pump Column 1 101 61 30
Subtotal Equivalent Length = 30
Q= 235 gpm
Head loss = .18'
41d;.t;i6,111)10" r 20214
Irrigation Pump D:srgnAxx
Subtotal Friction Head Losses = 11.35'
Required pressure at nozzle = 92.4'
Total Friction head losses=103.75'
2
N tAtI
W:\D10XX_GEN\DIOOX_MSW\D1005_CORRES_MSW\CGM\2024\SEABOARD WWTP DESIGNMSEABOARD DESIGN ASSUMPTIONS
REVISED MAY 1 2024.DOCX

Safety Head
- Provide 2V safety head (9psi) to compensate for pump wear to ensure long term maintenance of a
minimum of 40 psi at the sprinkler heads.
Total All Head losses = 145'
Design Condition: 235 g T @ 145' TDH
irrigation Pump Dnip*,"N
24C411
W:\D10XX_GEN\D100X_MSW\D1005_CORRES_MSW\CGM\2024\SEABOARD WWTP DESIGN\SEABOARD DESIGN ASSUMPTIONS
REVISED MAY 12024.DOCX

_�. SEPTEMBER 1907
DH 17 -RPM FT.
,� ! I III i EFFICIENCY iN PERCENT —
�� I 1 I 1 1
1 1 ! 4
10.
30
0.
nn//MI
n:c
!-
i
2.
+iNPSHR
'
0
a
tit
tz
' rn
0
=
— w
�x
t
I
;2
1
i
J
1 ' 0
_
I
0 40 so 120 160 200 240� 280
2 360 440
440 U.S.GPM
10 - - 20 30 40 50 60
70 SO 90
100 M 3/HR
v 5
l�S i A!
PA
SAS
IDE�SWaL,l,-,!""aDATA
'<'"F'L4..`4S+Sti5}i6''$
i
Ilnp€ ilex Number.3590 TRIM. (A) 6.313`" X 27.5'
So` l Number
359fi—S,C.LjENA�9.
flflqq� ( BRONZE E 8 6.000' X 27.5"
( )
I, Inc+til Ala, 7.936'max 7.500'min
(' i'Aal rial: J
y
; Pe: SEMI —OPEN (C) 5.750p X 27.5
Max. NO."Stages
23T
Thrust Fartor: (D) 5.500 ."
One Stye Weight
t�j
130 lbk=4.260 u
f.:.. ..
Eye Area: 6.600 sq. in. v:.. _,......... . ..... .___ ._:___-_...-__'
, Add'! Stage Weight
30 lb G
i -Minimum submergence
y1.
F! Weight: 4.125 lb. E above eye of, top
n Sty, Shaft Dia.
1.000 in
impeller: 1$ In.
+` Std. l.kwrl
0.438 In
�`'ai?tar�
Discharge SIa
5- — 6 In
Nclu€ rf Sc(s 1 2 3 r :.:. ...
;, �+• Sa�.a�z? Sits
5 — 6 in
c3S�}11CiiA�y — — _ — ®
tJ ry
z
Max. r.. .._, .c
0 375 In
C'!:�:'692
42 if! .. �-„�.,,.C}" tl:n'! �ii0 1; �47 i ,2Ei,7 ct^!1^."i hC[.�:3jJ^4'��f't.
F. P �:
t +I
...::'(. .;G!�aj .tr) .�.%.7...
(special)
.era,,u:
. �"�k':rfLiCI?`iiii"}C,u basedbasedCon..:�" I?i!'1[q t:;fc;iyi fresh VVcs`.c:` =t c'i �c;l?`7�'
:J''vr i:4� � +' �rS� �1•m' ;!%(7t-
� J� n l
`�t'c r E`JC 5 and 'i' ; f i)owls pr'1 ,p� -iv adi' ,sl`ed an SLJ'C1-r!F'rCj,eCd.

MCDAVID ASSOCIATES, INC.
CORPORATE OFFICE
Engineers - Planners - Land Surveyors
[phone] - Fax [phone]
E-mail: [e-mail]
3714 N. Main Street - P.O. Drawer 49
Farinville, NC 27828
June 25, 2024
North Carolina Department of Environmental Quality
Division of Water Resources
Non -Discharge Branch
512 N. Salisbury St.
Raleigh, N-C 27604
Subject:
Dear Sir:
GOLDSBORO OFFICE
Engineers - Planners
[phone] - Fax [phone]
E-mail: [e-mail]
109 E. Walnut Street - P.O. Box 1776
Goldsboro, NC 27533
Town of Seaboard
Engineering Certification and
Record Drawings
Town of Seaboard WWTP
Permit No. WQ0003299
Enclosed herewith is one copy of the engineering certification and one copy of the record
drawings. Should you have questions, please give us a call.
Sincerely,
McDAVID ASSOCIATES, INC.
Cecil Mad en, ., RE
&4A
Goldsboro Office
Cc: Town of Seaboard with enclosures
w:\D10XX_GEN\D100X_MSW\D1005_CORRES_MSW\CGM\2024\SEABOARD WWTP DESIGN\TRANSNffTTAL OF ENGINEERING
CERTIFICATION FOR CONTRACT NO 10.DOCX

Permit No. WQ0003299
Town of Seaboard
Town of Seaboard WWTF
ENGINEERING CERTIFICATION
❑ Partial [2/Final
Wastewater Irrigation System
July 15, 2021
Northampton County
I, C,E* C / t. (;. I�W;A) . , as a duly licensed North Carolina Professional
Engineer, having (r periodically / ❑ fully observed the construction of the permitted facilities, do hereby -
state to the best of my abilities that the facility was constructed in compliance with G.-S. 143-215.1.,
Administrative Code Title 15A Subchapter 02T, this permit, and the Division -approved plans and
specifications.
Documentation of any variation to this permit, and the Division -approved plans and specifications, is in the
attached as -built drawings.
Description of variations: A r)x' ?A" IPa F29- 'RavA_5 OA:) .5A i"
Pz4feSSTtl7talrER eeF'3m:.-s..7
�1
CG*A'i a #1 CPA Y/D-WC., Ca
\\ ` C I /
C� r
S1o'L
CL
SEAL _
16359 _
�/r��JG i•M�pO ��
THE COMPLETED ENGINEERING CERTIFICATION, INCLUDING ALL SUPPORTING
DOCUMENTATION, SHALL BE SENT TO THE FOLLOWING ADDRESS:
NORTH. CAROLINA DEPARTMENT OF ENVIROiVMIENTAL QUALITY
DIVISION OF WATER RESOURCES
NON -DISCHARGE BRANCH
By U.S. Postal Service By Courier-/Suecial Delivery
1617 MAIL SERVICE CENTER 512 N. SALISBURY ST.
RALEIGH, NORTH CAROLINA 27699-1617 RALEIGH, NORTH CAROLINA 27604
WQ0003299 Version 4.1 Shell Version 200201 Page 12 of 12