310023_Add-Info Request_20230630

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Stan Bowles
Bowles & Son Farm #1
607 Curtis Rd
Warsaw, NC 28398
Dear Stan Bowles:
NORTH CAROLINA
Environmental Quality
June 30, 2023
Subject: Additional Information Request
Application No. ADS310023
Bowles & Son Farm #1
Duplin County
The Animal Feeding Operations Program of the Division of Water Resources (Division) has completed a
preliminary review of the subject application received on March 22, 2023, for permit coverage under Swine
Farm Digester Waste Management System General Permit AWG400000 to convert an existing lagoon into
digester to capture biogas as a part of the proposed farm digester system at the Bowles & Son Farm #1.
Additional information is required before we may continue our review. Please address and submit the
following item(s) within 30 (thirty) days of receipt of this letter.
❑ Mailing Address —The Mailing Address shown on the application differs from the Mailing Address
of Record for owner Stan Bowles. Please confirm the correct Mailing Address.
❑ Stormwater Outlet — Please provide a typical detail, including dimensions, for outlet for stormwater
removed from digester covers. Please also indicate stormwater outlet location.
❑ Freeboard — NC NRCS Standard 366 — Anaerobic Digester requires a minimum of 2 feet of
freeboard in the covered digester. Please verify that the digester will meet minimum freeboard
requirements.
❑ Biogas Use as a Renewable Energy Resource — Session Law 2023-63 (2023 Farm Act) requires
that the gases collected by a farm digester system begin to be used as a renewable energy resource
as quickly as feasible, but no later than within six months of the collection of gases. Until the gases
are being used as a renewable energy resource the gas shall be flared rather than vented. Please
provide information for the intended onsite and/or offsite use of biogas. Please include expected
timeline regarding when collection of gases begins, completion of digester system, and utilization
of gas as a renewable energy resource.
❑ Gas Generation Estimate — Please submit an estimate for the daily volume of biogas to be generated
by the proposed Digester.
❑ Emergency — Please provide location/identification for the emergency flare(s).
❑ Influent/Effluent Sampling — Please indicate location for sampling of influent to and effluent from
each digester.
❑ Waste Level Gauge — Please indicate location/method for measuring waste levels in the digester,
as it does not gravity feed to the secondary containment.
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1636 Mail Service Center I Raleigh, North Carolina 27699-1636
NORTH CARCLINA
919.707.9129

Stan Bowles
ADS310023
Additional Information Letter
June 30, 2023
Page 2 of 2
❑ Tail Gas from Gas Upgrading SystemGUS) — Plans indicate that a GUS will be installed onsite
to process the biogas. How will tailgas or remnant biogas be managed? It appears to be introduced
back into the existing lagoon/secondary treatment lagoon. Please provide results of study to support
this remnant biogas management. Will this affect the effluent in the lagoon? Potential odor issues
and if so, what odor control measures will be implemented?.
❑ Odor Control Checklist — Recommend updating to the new Odor Control Checklist. See Attached.
❑ O&M Plan — The Contact Information for Christine Lawson should be updated as follows:
Christine Lawson, Animal Feeding Operations Program, Div. of Water Resources, 1636 Mail
Service Center, Raleigh, NC 27699-1636, 919-707-3664. Christine.Lawsonkdeq.nc.gov
❑ Air Quality Permitting — Please provide general information regarding any Air Quality permits,
and/or applicability determinations regarding this project. Please provide information about if
applications have been filed, permits (if issued), and/or results of an applicability determination.
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
responsibility of the applicant. In addition, any omissions made in responding to the above items shall
result in future requests for additional information.
Please reference the subject application number when providing the requested information. All revised
and/or additional documentation shall be signed, sealed and dated, submitted to my attention at the address
below. Failure to provide this additional information on or before the above requested date may result in
your application being returned as incomplete.
If you have any questions regarding this letter, please feel free to contact me at [phone] or
[e-mail].
Sincerely,
E
DocuSigned by:I� ViS{iv t, fj. (Aws6w
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Christine B. Lawson
Engineer
Animal Feeding Operations
cc: Wilmington Regional Office, Water Quality Regional Operations Section — via email
Cavanaugh & Associates — Jeff Cappadona
Laserfiche — File No. 310023
REQ5 North Carolina Department ofEnvironmental Quality I Division ofWater Resources
512 North Salisbury Street 1 1636 Mail Service Center I Raleigh, North Carolina 27699-1636
NORTH CAROLINA 919.707.9129
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