310090_Application - Digester Design Revision_20240910

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ENGINEERS • MANUFACTURERS CONSTRUCTORS
September 10, 2024
Christine Lawson
NCDEQ Division of Water Resources
1601 Mail Service Center
Raleigh, NC 27699-1601
AFO Permit Application
Subject: B&C Farm
Facility # AWS310090
State Digester General Permit — Design Revision
Dear Ms. Lawson,
Roeslein & Associates, on behalf of the farm owner, hereby submits the following revision for digester design at B&C Farm
As discussed, we are revising the design to eliminate the mixing well at the digester. This mixing pump pulled water from the
digester and discharged water back into the digester. Influent into the digester will either come from a wet well lift station
between the barns and digester or directly from the barns via gravity pipe. The sampling protocol document verbiage has been
updated to clarify that all digester influent sampling will be taken via cleanout in the influent piping prior to entering the lagoon.
To facilitate your review of the enclosed documentation, the following is an itemized breakdown:
1. One (1) revised copy Sampling Protocol and Schedule
2. One (1) copy of revised General Arrangement Plan to reflect eliminated mixing pump
3. One (1) copy of revised Hydraulic Profile Plan to reflect eliminated mixing pump
Please do not hesitate to contact me or my office if you have any questions, comments or require any additional information.
Thank you,
G . ;�
Christopher Fey
Manager, Building Design & Construction
Roeslein & Associates
Attachments
Cc: Farm Owner
Page 1 of 1

Sampling protocol and schedule for Monarch sites
Date: 08/23/2024
R08.23.24
Sample collection at all sites should be done using the sampling protocol outlined below. A submittal sheet will be sent to the person in charge
of sampling prior to sampling. The respective person is responsible for print submittal forms, conducting sampling, label samples as per submittal
form, safely storing (refrigerated containers during storage) and shipping samples to the respective lab (instructions on submittal form)
Required accessories:
1. Telescopic sampler extendable to 18 feet and the pendulum beaker
2. Gloves and sampling containers
3. Ice packs.
4. Sampling submittal forms
5. Safety supplies
During sampling event two people should be responsible while supporting tasks (shipping etc.) can be conducted by the person in charge alone.

Sampling protocol for digester samples
1. Influent and effluent samples are intended to be collected for all sites from shortlisted digesters on a quarterly basis. Sampling to be
conducted by two persons at the site.
2. Label all sampling containers with respective sampling ids.
3. The influent sample must be collected from a "cleanout" just prior to entering the lagoon using the telescopic sampler and 5-gallon
bucket while following all site -specific safety policies, including Lagoon Access Safety Procedure
4. The effluent sample must be collected from the crossover pipe/wet well using the telescopic sampler and 5-gallon bucket while following
all site -specific safety policies, including Lagoon Access Safety Procedure
5. Procedure for sample collection from a Cross over pipe
a. On opening the valve on crossover pipe it is recommended to allow enough time to pass such that the standing debris in the
pipe is flushed out and a good representative sample can be collected.
b. Collect 3 x 500 mL samples using the sampler into a clean 5-gallon bucket.
c. Repeat this procedure 2 more times, while collecting all the samples into the same 5-gallon bucket.
d. Allow sufficient time between two collection events such that pipe contents are flushed.
e. At the end of the sampling event, you may have — 1.3-1.5-gallon sample, homogenize the contents of the bucket gently mixing
using the sampler and the pendulum beaker on the sampler.
6. Sampling for sample collection from a wet well or cleanout.
a. Using the telescopic sampler (beaker attached to the rod) gently homogenize contents of the wet well.
b. Collect 6-8 beakers of sample into a 5-gallon bucket from different areas of the wet well/cleanout to get a representative sample.
c. Gently homogenize the contents of the bucket.
7. Grab a sample from the homogenized mixture to fill the labeled sampling container (influent or effluent) and put the container cap
tightly ensuring a watertight seal.
8. If the samples are to be stored for more than 2 hours before shipping, store them in a refrigerator preferably 4°C or lower.
9. If refrigeration is not available use frozen icepacks to cool the samples and replace icepacks at regular intervals, store the samples in a
well -ventilated space.
10. DO NOT STORE SAMPLES IN REFRIGERATORS MEANT FOR FOOD STORAGE
11. Ship samples to the lab (details in the submittal form) to deliver overnight. Include ice packs in the shipping box to keep samples cool
during transit.

Sampling protocol for lagoon liquid samples (Secondary lagoon
1. Lagoon liquid samples are intended to be collected from all the open lagoons at every site on a quarterly basis.
2. Label all sampling containers with respective sampling ids. (Refer sample list for Sample IDs)
3. The sample must be collected from the multiple spots (6-8) in the open lagoon using the telescopic sampler and 5-gallon bucket while
following all site -specific safety policies, including Lagoon Access Safety Procedure
4. Use the 18 feet telescopic sampler to reach lagoon water surface from the berm, it is needed that the sampling in charge is accompanied
by another operator onsite for this sampling for ease of equipment handling and safety.
5. Collect 2 x 500 mL samples at each spot, using the sampler into a clean 5-gallon bucket.
6. Repeat this procedure at all 6-8 randomly chosen spots along with periphery of the lagoon, collect all the samples into the same 5-gallon
bucket.
7. At the end of the sampling event, you may have — 1.3-1.5-gallon sample, homogenize the contents of the bucket gently mixing using the
sampler and the pendulum beaker on the sampler.
8. Grab a sample from the homogenized mixture to fill the labeled sampling container and put the container cap tightly ensuring a
water/airtight seal.
9. If the samples are to be stored for more than 2 hours before shipping, store them in a refrigerator preferably 4C or lower or use frozen
icepacks to cool the samples in a small container and replace icepacks at regular intervals, store the samples is a well -ventilated space.
10. DO NOT STORE SAMPLES IN REFRIGERATORS MEANT FOR FOOD STORAGE
11. Ship samples to the lab (details in the submittal form) to deliver overnight. Include ice packs in the shipping box to keep samples cool
during transit.

Sludge survey and sampling from secondary lagoon
1. The secondary lagoon, source of sludge, will be examined for sludge levels once every four years.
2. Sludge levels in the covered digesters will be examined once every four years appropriate sludge management plans will be put in
place to keep sludge levels in the digester under control.
3. Sludge sampling, from the secondary lagoon, will be conducted during sludge management events to determine sludge
composition especially Nitrogen, Phosphorus, potassium, and other micronutrients.
4. This sampling protocol is intended to help evaluate progression of sludge level in the secondary lagoon and covered digeste and
ensure agronomic land application.
5. Sludge sampling will be conducted using a sludge judge, while sludge surveys will be conducted using sonar devices that can be
remotely controlled from the berm following all site -specific safety policies, including Lagoon Access Safety Procedure.

Recommended analysis
Table 1 Recommended tests for lagoon/digester effluent sampling
Digester effluent, secondary lagoon effluent and sludge testing
Manure package
Eff-MMDDYY
Inff-MMDDYY
Nitrogen, Ammonium Nitrogen,
Organic Nitrogen, Phosphate, Potash,
Calcium, Copper, Iron, Magnesium,
Manganese, Sodium, Sulfur, Zinc,
Moisture/Total Solids, Total Salts, pH
VS
Alkalinity
Volatile organic acids
COD
BOD5
Total testing cost
Amongst the manure package TS, Ammonium nitrogen, pH are mandatory tests and if done separately cost more than the package.
Table 2 Optional tests for lagoon/digester effluent sampling
Orthophosphate
Sulfate
Sulfide
EC
Carbon

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I HEREBY CERTIFY THAT THIS
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PREPARED BY ME OR UNDER MY
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DIRECT PERSONAL SUPERVISION
AND THAT I AM A DULY LICENSED
PROFESSIONAL ENGINEER UNDER
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THE LAWS OF THE STATE OF
NORTH CAROLINA.
2001 W. BROADWAY, COLUMBIA MO 65203
573-814-1568
MY LICENSE NUMBER IS
NC CERTIFICATE OF AUTHORITY C-4628
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PRODUCTION INFORMATION CITY
AVG ANNUAL ANIMAL POPULATION 7344
ESTIMATED RNG I NJ DTH/YR 9837
AN I MAL TYPE GF
BARN OPERATION TYPE Flush
SYSTEMS
SYSTEM
OPTION SELECTED
CITY
EXISTING BARN EFFLUENT
GRAVITY SEWER
5
S-1
DIGESTER INFLUENT
LIFT STATION
2
S-2
DIGESTER EFFLUENT
GRAVITY &FORCED WATER
TRANSFER
2
S-3
WET WELL
YES
2
S-4
COVER/RAIN WATER REMOVAL
YES
2
S-5
POWER FLUSH
YES
1
S-6
SLUDGE REMOVAL
YES
1
S-7
EMERGENCYVENT
YES
2
S-8
BIOGAS INTERFACE
YES
1
DIGESTER
PARAMETER
VALU E
UNITS
LENGTH
330
FT
WI DTH
170
FT
TOP OF DIKE ELEVATION
97.95
FT
DEPTH
12
FT
BOTTOM ELEVATION
85.95
FT
DIKE WIDTH
15
FT
INTERIOR SLOPE
3:1
EXTERIOR SLOPE
3:1
OPERATING HEIGHT
10
FT
OPERATING ELEVATION
95.95
FT
LOW DIGESTER OPERATING HEIGHT
N/A
FT
LOW DIGESTER OPERATING ELEVATION
N/A
FT
OPERATING VOLUME
2923874
GAL
TOTAL VOLUME
3755881
GAL
CUT
8818
CY
FI LL
8851
CY
NET
—33
CY
PIPE
SERVICE
SIZE
SPECIFICATION
CITY
UNITS
BARN EFFLUENT (GRAVITY)
1211
PL01
350
FT
EXISTING BARN EFFLUENT (FORCED)
N/A
N/A
N/A
N/A
LIFT STATION OVERFLOW
1211
HP01
100
FT
DIGESTER INFLUENT (FORCED)
611
HP02
2800
FT
DIGESTER INFLUENT (FORCED)
N/A
N/A
N/A
FT
DIGESTER INFLUENT CLEANOUT
X11
PL01
N/A
EA
DIGESTER EFFLUENT (FORCED)
611
HP02
2000
FT
WATER TRANSFER WET WELL LATERAL
1211
HP01
50
FT
DIGESTER EFFLUENT (GRAVITY)
1211
HP01
300
FT
WET WELL LATERAL
N/A
N/A
N/A
FT
COVER WATER SUCTION
311
HP01
80
FT
COVER WATER DISCHARGE
311
HP02
200
FT
POWER FLUSH
611
HP02
100
FT
SLUDGE REMOVAL
1211
HP02
50
FT
MIXING SUCTION
811
HP02
50
FT
MIXING DISCHARGE
611
H P02
350
FT
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MILLIMETERS:
2
04SEPT24
UPDATED BACKGROUND INFORMATION AND DATA TABLE
ZTS
CF
KPL
XX -+O.10
1
19APR24
ISSUED FOR PERMITTING
ZTS
CF
KPL
DIMENSION TOLERANCE
(UNLESS OTHERWISE
XXX=±0.010
0
15APR24
ISSUED FOR PERMITTING
LMB
CF
KPL
9 %
_
SPECIFIED)
ANGLES =+0.5°
REV
#
DATE
REVISION DESCRIPTION
DRWN
BY
CHK'D
I BY
APP'D
BY
FRACTIONS:
INCHES:
THIS DOCUMENT, ALONG WITH ITS DESIGNS, KNOW-HOW AND DRAWINGS, CONTAINS CONFIDENTIAL AND PROPRIETARY INFORMATION
THAT IS THE PROPERTY OF ROESLEIN & ASSOCIATES, INC. AND ROESLEIN ALTERNATIVE ENERGY, LLC AND IS PROTECTED UNDER STATE
AND FEDERAL LAW, INCLUDING 18 USC SECTION 1836 AND 17 USC SECTION 101 et se ROESLEIN & ASSOCIATES, INC. AND ROESLE IN
ALTERNATIVE ENERGY, LLC RESERVES ALL PATENT, COPYRIGHT AND OTHER PROPRIETARY RIGHTS TO THIS DOCUMENT, INCLUDING ALL
DESIGN, MANUFACTURING, REPRODUCTION, USE, AND SALES RIGHTS THERETO, EXCEPT TO THE EXTENT SAID RIGHTS ARE EXPRESSLY
GRANTED TO OTHERS. THIS DOCUMENT MUST NOT BE DUPLICATED OR DISCLOSED, IN WHOLE OR IN PART, WITHOUT THE EXPRESS
WRITTEN OFROESLEIN & ASSOCIATES INC. AND ROESLEIN ALTERNATIVE ENERGY, LLC. ANY USE OF THE INFORMATION
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MACHINED PARTS -±1/64
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WELDED ASSEMBLIES
LINEAR DIMENSIONS ON
=±1/16
STRUCTURAL WELD
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.XXX =±.005
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ANGLES =±.05°
CONTAINEDIN DOCUMENTTHIS THA ORIZED RECIPIENTX RBEEN
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ANGLES =±1 °PROV
ISN TIR LION
DIED TLY HE REQUEST OF ROESLEIN & AT AND ROESLEIN ALTERNATIVE TERNAT ENERGY, LC
09/05/:
THE HOLDER OF THIS DOCUMENT AGREES TO IMMEDIATELY RETURN OR DESTROY THIS DOCUMENT AND ALL COPIES THEREOF IN ITS
POSSESSION. 92023 ROESLEIN & ASSOCIATES, INC. AND ROESLEIN ALTERNATIVE ENERGY, LLC
D O NOT SCALE
PRINT
MONARCH BIOENERGY
REGISTER, NC
AREA 1000
B&C FARMS
GENERAL ARRANGEMENTS
ENGINEERS • MANUFACTURERS • CONSTRUCTORS
DWG.
SHEET REV
NO. RA270-00-27019 4OF6 2

120 120
NOTE:
INVERTS OF EXISTING GRAVITY PIPING ARE
APPROXIMATED BASED ON BEST AVAILABLE
SURVEY INFORMATION.
LEGEND:
TOB:
TOP OF BANK ELEVATION
FF:
FINISHED FLOOR ELEVATION
FB:
FREEBOARD ELEVATION
EG:
EXISTING GRADE ELEVATION
OL:
OPERATING LEVEL ELEVATION
INV:
INVERT ELEVATION
SHWT:
SEASONAL HIGH WATER TABLE
LIQUID FLOW DIRECTION
AMILTON 8/22/2024 11:47:20 AM R:\200599\06-DRAWINGS\CIVIL\AlK\REGISTER-CLUSTER 1\AFO PERMIT DRAWINGS\27019 B&C AFO PERMIT.DWG