NC0050661_Application (ATC)_20241010 (3)

Baker, Caroline D
From: Tuvia, Ori A
Sent: Thursday, June 27, 2024 9:40 AM
To: Tyndall Lewis; [e-mail]
Cc: Desai, Trupti A; Rich Moore; Trey Gurley; Ronnie Thompson; Martin, Suzanne; Coco,
Nick A; Cecil Madden
Subject: RE: [External] RE: Macclesfield_PSIL_CS370605-02 and VUR-W-ARP-0016
Mr. Lewis,
Appreciate the detailed explanation , given the provided reasoning we will accept the usage of the lower design
influent concentrations.
As for the rest of the ATC please provide the updated drawings requested (sealed and marked as "Final Drawing —
For review purposes only— not released for Construction" (page 59 of calculation chlorine contact time, pump
curves, updated sheet G4, summary of proposed work, etc..)
Please also revise table 2 on page 8 of the application to only reflect the added units (since no modifications will
be done to the existing units), as well as adding the filter type on table 3, and adding the dosing pumps on table 6.
Sincerely,
Ori Tuvia
Environmental Engineer III
NC DEQ / Division of Water Resources/ Permitting
610 East Center Avenue
Mooresville, NC 28115
Direct Line: [phone] Fax: [phone]
Ori.tuviaCa)-deg. nc.gov
¢ifia iot in Coo ares.
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Tyndall Lewis <[e-mail]>
Sent: Thursday, June 27, 2024 7:14 AM
To: Tuvia, Ori A <[e-mail]>; [e-mail]
Cc: Desai, Trupti A <[e-mail]>; Rich Moore <[e-mail]>; Trey Gurley <deg@mcdavid-
inc.com>; Ronnie Thompson <[e-mail]>; Martin, Suzanne <[e-mail]>; Coco, Nick A
<[e-mail]>; Cecil Madden <[e-mail]>
Subject: RE: [External] RE: Macclesfield_PSIL_CS370605-02 and VUR-W-ARP-0016
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Please find attached a spreadsheet illustrating Macclesfield WWTP Flow and BOD data
from September 2020 through April 2024 ( 3 years and 8 months). This represents the
period that I can easily obtain copies of the data. Note that in 2020 and 2024 all effluent
BOD results were less than 2 mg/l. In each of calendar years 2021, 2022, and 2023 there
was a single month in which a sample result for effluent BOD was reported other than less
than 2 mg/l. In all other months all sample results were reported as less than 2 mg/l. The
spreadsheet calculations are based on samples less than 2 mg/l being assumed to be 2
mg/l. Note that the removal rate consistently calculates to be greater than 99% for the
entire period.
A summary of annual average flow and BOD data illustrated on the spreadsheet is as
follows:
2020 .059MGD Influent BOD =878
2021
.057MGD
Influent BOD
=596
2022
.025 MGD
Influent BOD
=680
2023
.030 MGD
Influent BOD
=391
2024 .045 MGD Influent BOD =668
Effluent BOD
= 2mg/l
Effluent BOD
= 2mg/l
Effluent BOD
= 2mg/l
Effluent BOD
= 2mg/l
Effluent BOD
= 2mg/l
99+% removal
99+% removal
99+% removal
99+% removal
99+% removal
It is recognized the reported influent BOD results are much higher (460 mg/l average over
the most recent 16 month period) than typically expected for domestic
wastewater. Perhaps these results are higher due to unique physical characteristics
associated with the influent sampling location. The Town does not have any significant
non -domestic wastewater customers.
It is believed as flows increase and approach the WWTP .175 MGD design capacity
that the BOD values will trend toward normal domestic wastewater values of 250-300
mg/l. If future flows do not trend toward values more typical of domestic wastewater,
please note that each of the two oxidation ditches has the capability to treat .175
MGD with 250 mg/l of BOD and 25 mg/l of ammonia. This is equivalent to treating. 175
MGD gpd with 500 mg/l BOD and 50 mg/l ammonia, and therefore the proposed two
oxidation ditches have adequate capabilities to provide treatment for the Town's
wastewater even if BOD levels remain high. Note that the second oxidation ditch is
being provided to accomplish duality.
In summary, the proposed improvements are believed adequate to continue to
provide acceptable levels of treatment in the future as flows approach the WWTP
design capacity, even during a short term event with one ditch out of service.
From: Tuvia, Ori A <[e-mail]>
Sent: Tuesday, June 25, 2024 3:32 PM
2

To: Tyndall Lewis <[e-mail]>; [e-mail]
Cc: Desai, Trupti A <[e-mail]>; Rich Moore <[e-mail]>; Trey Gurley <deg@mcdavid-
inc.com>; Ronnie Thompson <[e-mail]>; Martin, Suzanne <[e-mail]>; Coco, Nick A
<N Ick.Coco@deg. nc.gov>
Subject: RE: [External] RE: Macclesfield_PSIL_CS370605-02 and VUR-W-ARP-0016
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Mr. Lewis,
Please provide a review the current removal rate achieved for BOD at the facility (using influent and effluent data
from the last 5 years) to determine current treatment capability operating at roughly 30% permitted capacity.
Additionally, please provide explanation of how the facility will be able to maintain sufficient treatment as the flow
experienced meets the permitted capacity. Will the observed removal rates be maintained as the flow
experienced scales upward? Please consider the ability for each ditch to achieve sufficient treatment, considering
one may be down for maintenance.
Sincerely,
Ori Tuvia
Environmental Engineer III
NC DEQ / Division of Water Resources/ Permitting
610 East Center Avenue
Mooresville, NC 28115
Direct Line: [phone] Fax: [phone]
Ori.tuvia(a)-deg. nc.gov
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Tyndall Lewis <[e-mail]>
Sent: Thursday, June 6, 2024 6:53 AM
To: Tuvia, Ori A <[e-mail]>; Martin, Suzanne <[e-mail]>; [e-mail]
Cc: Desai, Trupti A <[e-mail]>; Rich Moore <[e-mail]>; Trey Gurley <deg@mcdavid-
inc.com>; Ronnie Thompson <[e-mail]>
Subject: RE: [External] RE: Macclesfield_PSIL_CS370605-02 and VUR-W-ARP-0016
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
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I did not intend to upload the revised docs until you had given me the ok after review of my
response comments emailed to you May 2. If you are okay with the response comments
and are ready to provide project approval, please advise and we will upload the revised
plans and contract docs. Regarding the ATC application, I am not sure what revisions you
would like to see.

I will be on vacation after today until June 16. Trey can handle anything concerning this
project while I am gone. Trey's email address is listed above.
Thanks for your revies and assistance with moving this project forward.
From: Tuvia, Ori A <[e-mail]>
Sent: Thursday, May 30, 2024 8:04 AM
To: Tyndall Lewis <[e-mail]>; Martin, Suzanne <[e-mail]>; [e-mail]
Cc: Desai, Trupti A <[e-mail]>; Rich Moore <[e-mail]>; Trey Gurley <deg@mcdavid-
i nc.com>
Subject: RE: [External] RE: Macclesfield_PSIL_CS370605-02 and VUR-W-ARP-0016
Good morning all,
Wanted to follow up on the subject ADI, were the final documents submitted? I don't see in the documents a revised
ATC application.
Sincerely,
Ori Tuvia
Environmental Engineer III
NC DEQ / Division of Water Resources/ Permitting
610 East Center Avenue
Mooresville, NC 28115
Direct Line: [phone] Fax: [phone]
Ori.tuvia(a)-deg. nc.gov
C.'.
Not lnq Compares,-
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Tyndall Lewis <[e-mail]>
Sent: Thursday, May 2, 2024 2:14 PM
To: Martin, Suzanne <[e-mail]>; [e-mail]
Cc: Desai, Trupti A <[e-mail]>; Tuvia, Ori A <[e-mail]>; Rich Moore <rbm@mcdavid-
inc.com>; Trey Gurley <[e-mail]>
Subject: [External] RE: Macclesfield_PSIL_CS370605-02 and VUR-W-ARP-0016
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Attached please find point by point responses to your review comments dated April 1,
2024. In response to your review comments changes were made to three plan sheets (copies
attached). Please review my response and let me know if you have any issues or further
comments. If not, I will re -submit the complete package including the contract documents,
4

plans and Engineering Calculations. If you would like to further discuss comments or
questions, please contact me on my cell phone [phone].
From: Martin, Suzanne <[e-mail]>
Sent: Monday, April 1, 2024 12:09 PM
To: Tyndall Lewis <[e-mail]>; [e-mail]
Cc: Desai, Trupti A <[e-mail]>; Tuvia, Ori A <[e-mail]>
Subject: Macclesfield_PSIL_CS370605-02 and VUR-W-ARP-0016
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Good afternoon,
Thank you for your submission of the plans and specifications for the Macclesfield project. A hard copy of the Request
for Additional Information document has been mailed to the Applicant. However, a pdf version of the document has
been attached to this email for your reference.
Please resubmit all revisions by May V, 2024 via our Laserfiche platform, and ensure that I am listed as the DWI Contact
Name. Let me know if you have any questions; I am happy to help.
Thank you,
Suzanne
Suzanne Martin, P.E.
Division of Water Infrastructure
North Carolina Department of Environmental Quality
Office: [phone] 1 Cell: [phone]
[e-mail]
t c. � D_E
NORTH CAROLINA
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.