WQ0000795_More Information (Requested)_20230217

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHAPM E. ROGERS, JR.
Director
KYLE BREUER - TOWN MANAGER
TOWN OF SURF CITY
214 WEST FLORENCE WAY
HAMPSTEAD, NORTH CAROLINA 28443
Dear Mr. Breuer:
NORTH CAROLINA
Environmental Quality
February 17, 2023
Subject: Application No. WQ0000795
Additional Information Request
Town of Surfy City WWTF
Wastewater Irrigation System
DWI Project: SRP-W-ARP-0018
Onslow County
Division of Water Resources' Central and Regional staff, and the Division of Water Infrastructure
staff, has reviewed the application package received November 21, 2022. However, additional information
is required before the review may be completed. Please address the items on the attached pages no later
than the close of business on March 20, 2023.
Please be aware that you are responsible for meeting all requirements set forth in North Carolina
rules and regulations. Any oversights that occurred in the review of the subject application package are
still the Applicant's responsibility. In addition, any omissions made in responding to the outstanding items
in Sections A through Q, or failure to provide the additional information on or before the above requested
date may result in your application being returned as incomplete pursuant to 15A NCAC 02T .0107(e)(2).
Please reference the subject application number when providing the requested information. All
revised and/or additional documentation shall be signed, sealed and dated (where needed), with an
electronic response submitted to my attention at: hiips:Hedocs.deg.nc.gov/Forms/NonDischarge-Branch-
Submittal-Form-Ver2.
If you have any questions regarding this request, please contact me at [phone] or
[e-mail]. Thank you for your cooperation.
Sincerely,
�2GClP.ddyL �Ge-GG�
Erick Saunders, Engineer
Division of Water Resources
cc: Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Jeffrey Ray, PE — Highfill Infrastructure Engineering, P.C. (Electronic Copy)
James E. Baltzer, P.E. — Division of Water Infrastructure
Laserfiche File (Electronic Copy)
D E Q�� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
NORM CAROLINA -
oePemmeatoie�o�me�iQuar\ /� 919.707.9000

Mr. Kyle Breuer
February 17, 2023
Page 2 of 5
A. Cover Letter:
1. No comments.
B. Application Fee:
1. No comments.
C. Wastewater Irrieation System (FORM: WWIS 06-16) Application:
1. The engineering plans indicate that the limit of disturbance for this project encroaches on wetlands.
In application Item IVA and VIL8., there is a mention of a Nationwide 38 permit needed to meet
the required 50-foot setback to surface waters established in 15A NCAC 02T .0506(b). A status
update for this application shall be provided. Please note that the proposed permit modifications
cannot be issued for operation until the certification has been completed and verified to meet the
50-foot setback.
D. Property Ownership Documentation:
1. No comments.
E. Soil Evaluation:
1. N/A
F. Agronomist Evaluation:
1. N/A
G. Hydro2eolo6c Report:
1. N/A
H. Water Balance:
1. N/A
I. EnEineerinE Plans:
1. The dimensions of the digester decanter tank seem to be slightly different between the civil plans
on pages C-1.2 and C-1.3, and the structural plans on pages S2 through S4. The dimensions in these
two sections shall be checked so that the structural and civil plans correspond to the same design.

Mr. Kyle Breuer
February 17, 2023
Page 3 of 5
There are several detail callouts on Sheet C-1.3 that refer to the wrong plan sheet page. For example,
the Aerobic Digester callout refers to Sheet C-1.4, but the actual detail for the unit is on C-1.5. On
top of this page there is a callout for a second detail on Sheet C-1.4 showing the digester section.
However, this second detail was moved to C-1.5, which appears to have shifted the naming of the
plan sheet pages so that all detail callouts are off one page. For instance, the Aerobic Digester
Interconnect refers to Sheet C-1.6 but is located on page C-1.7. The callouts on this page shall be
checked for accuracy and updated with the correct pages as needed.
3. The aerobic digester plan on Sheet C-1.3 indicates a 6-inch butterfly valve on the line connecting
the blower to the digester. On sheet C-1.5, the steel air line from the blower is 8-inch and an _
accompanying reducer is not shown in the plans. Please review and confirm the sizing of this pipe V
and update the plans and specifications.
4. There is an appurtenance depicted at the end of the jet aeration header shown on Sheet C-1.3 that
does not have a callout or a detail. A detail for this appurtenance shall be provided, and Section 4(�
73 21 Item 2.2 shall include this under the products specified for the jet aeration header.
5. Keynotes 5, 8, and 26 on Sheet C-1.4 specify varying sizes of wall piping that are shown to be
different sizes to the accompanying upstream and downstream pipes. However, a detail was not
provided depicting how the wall penetrations shall be fitted. A detail shall be provided for V of
these wall penetrations specifying how they will be run through the digester wall.
6. Keynote 17 on Sheet C-1.4 specifies a 6-inch pipe running between the decanter pump to the decant
valve box shown on Sheet C-1.6. The piping immediately upstream and downstream of this pipe
(keynotes 16, 23, and 20) is 4-inch, and no reducer is shown to connect these items. This same
section of pipe corresponds to keynote 5 on Sheet C-1.6. Additionally, keynote 34 on this sheet
specifies a 4-inch pipe but appears to depict the Cx4" reducer fitting. This may have bee/mixed
up with keynote 29, which specifies the reducer but seems to show a 4-inch pipe. The callouts for
this drawing shall be clarified for this section of piping.
7. A general detail shall be provided for the jet aeration nozzles specified on Sheets C-1.3 an4t-1.5.
Keynote 4 on Sheet C-1.8. specifies a 90-degree bend pipe fitting, but detail drawing appears to
depict two 45-degree bend pipe fittings connected in series. Additionally, keynote 17 on this page
specifies an 8"x10' eccentric reducer but note 17 on drawings 1 and 3 appears to refer to the
concrete pipe support (which is listed as keynote 16). Similarly, keynote 16 specifies the concr
support, but appears to refer to the combination air release valve (which is listed as keynote 1y
This keynotes on this page shall be checked for accuracy and updated with the correct callouts.
J. Specifications:
1. The Division 33 and Division 46 specifications do not have a designated client,project name, and
project name in the bottom left-hand corner of these sections. Please provideese specifications
with these details included.
2. Item 2.8.A on page 46 73 21-6 states that the rated capacity of the blo er is 1064 SCRM. Please
clarify whether SCRM is supposed to be SCFM and update this secti if it is incorrect.
K. Eneineerine Calculations:
1. Please provide a manufacturer's information for the 1,06Vibic feet per minute (CFM) blower.

MA
Mr. Kyle Breuer
February 17, 2023
Page 4 of 5
It is unclear from the submitted engineering calculations how the 1,064 CFM blower was sized.
The mixing air requirements per volume provided in the calculations package is between 0.02-0.04
m3/(m3*min). Based on the sizing of the new 504,400-gallon digesV(equivalent to 2,046 m3), a
minimum of —40.92 m3/min should be provided for adequate mixing of a tank this size, equating to
roughly 1450 CFM. Please provide additional information on how the 1,064 CFM blower was sized
and provide a justification for the sizing if lower than the calculated minimums.
3. See Item M.1. A demonstration that the specified a��nyliary power source can power all essential
treatment units with the inclusion of these new facili�Ies.
L. Site May:
1. No comments.
M. Power Reliability Plan:
1. In accordance with 15A NCAC 02T .0505(1), expanding facilities shall provide power reliability
consisting of either an automatically activated standby power supply capable of powering all
essential treatment units under design conditions, or apVr�iral from the Director to the contrary.
Please provide documentation of power reliability that mYets the requirements of 02T .0505(1).
N. Operation & Maintenance (O&M) Plan:
In accordance with 15A NCAC 02T .0507 and Item N of the WWIS 06-16 instruction form, an
O&M plan shall be maintained for all systems. Please pride an updated O&M Plan that meets
the requirements listed in 02T .0507.
O. Residuals Management Plan:
1. No comments.
P. Additional Documentation:
➢ Certificate of Public Convenience and Necessity:
1. N/A
➢ Existing Permit:
1. No comments.
➢ Final Environmental Document:
1. In accordance with 15A NCAC 02T .0105(c)(4) and the North Carolina Environmental Policy
Act, any project involving public monies shall srnit the final environmental document. One
copy of this document shall be provided.
➢ Floodway Regulation Compliance:

Mr. Kyle Breuer
February 17, 2023
Page 5 of 5
1. N/A
➢ Operational Agreements:
1. N/A
➢ Threatened or Endangered Aquatic Species Documentation:
In accordance with 15A NCAC 02T .0105(c)(10), all application packages for expanding
facilities shall include documentation of the presen�eAr absence of threatened or endangered
aquatic species using information provided by the Nai'ural Heritage Program of the Department.
Please contact the Natural Heritage Program and submit this information.
➢ Wastewater Chemical Analysis:
1. N/A
Q. Questions from Division of Water Infrastructure Staff:
1) General Comments:
a) Provide a response to all comments on a comment -for -comment basis.
b) Highlight all changes with differently colored text in the body of the revised plans and
specifications.
c) Submit one hard copy and one digital copy on flash drive of the revised plans and
specifications incorporating all resulting changes.
d) Design and Bid documents and guidance are located on the NC -DWI website:
hM2s://deq.nc.gov/about/divisions/water-infrastructure/i-have-fundin /g/desi n�bid.
e) Submit a completed Bid and Design Document Submittal Checklist (Form PS-
SUBMITTAL-07/22) https://deq.nc.gov/water-infrastructure/ps-submittal-checklist-22-07-
20/download?attachment.
f) Provide any associated permits or the current status with expected issuance date(s).
2) Specifications
a) Notice of Award (C-510) and Notice to Proceed (C-550) require signature lines for the
Owner AND the Contractor. Update both forms accordingly.
b) Provide location of, or where request for, a Construction Sequence Plan such that
construction activities will not result in overflows or bypasses to waters of the State. The
Plan must not imply that the Contractor is responsible for operation of treatment facilities