310023_Add-Info Response_20230726

July 26, 2023
Christine Lawson, Engineer
NCDEQ Division of Water Resources
Animal Feeding Operations
1636 Mail Service Center
Raleigh, NC 27699-1636
Subject: Response to Additional Information Request
Application No. ADS310023
Bowles & Son Farm #1
Duplin County
Dear Mrs. Lawson,
CAVANAU G H
Stews, ship Through his,ovcmA_,
Cavanaugh & Associates, P.A., on behalf of Stan Bowles has reviewed your Additional Information
Request, dated June 30, 2023, for the subject permit modification application for 'Bowles & Son Farm
#1', which is noted to have been received by the Division on March 22, 2023; and has developed
responses and additional supporting information to address each item in your letter. For your
convenience, we have repeated the comments below in bold font, followed by the responses in
italicized font.
1. 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.
Response: Please note the correct mailing address is as follows:
607 Curtis Rd.
Warsaw, NC 28398
2. Stormwater Outlet— Please provide atypical detail, including dimensions, for outlet for
stormwater removed from digester covers. Please also indicate stormwater outlet location.
Response: Please see attached plan sheets showing the location of the proposed
stormwater outlet (site plan sheet C.2.15.1), and typical detail (detail sheet
C.3.8). It should be noted that the design low point in the lagoon cover will be
determined by the cover supplier/installer, and provided to the permittee as a
submittal drawing prior to installation; therefore, the specific location depicted
on the attached site plan may change, and if so, such change will be reflected in
the record drawings upon completion of construction.
3. 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.
Response: Per the NRCS 366 Anerobic Digester standard, rainfall is included in determining
the operational volume of the digester. The NOAA Atlas 14 30yr normal rainfall
data for the area has been used to determine the 25-year, 24-hour rainfall on the
digester. With this data, the operational volume for the digester design at this

site is based on 12-inches of structural freeboard plus 7.5 inches for the 25-year,
24-hour rainfall event to determine the 32.28 inches of freeboard for the
digester.
4. 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.
Response: The applicant plans to utilize the biogas produced from the facility to generate a
renewable energy resource for export off the farm. Specific details of how the
applicant plans to do this are not yet released, but the applicant plans to begin
export of the renewable energy resource within 6 months of collecting gases in
accordance with the 2023 Farm Act.
S. Gas Generation Estimate —Please submit an estimate for the daily volume of biogas to be
generated by the proposed Digester.
Response: The daily volume of biogas varies based on animal stocking numbers, animal
age, and climatic variations. A gross estimate that is commonly used for in -
ground, ambient temperature digesters is about 2 cubic feet of biogas per pig
occupant in the farm per day; however, the actual amount of biogas produced by
the farm may vary significantly given the considerations described above.
6. Emergency Flare — Please provide location/identification for the emergency flare(s).
Response: An emergency flare will not be provided for the proposed farm. Rather, should
the applicant need to dispose of excess biogas, the system operator will open
one or more emergency vent ports to be installed as part of the HDPE digester
cover system, and release the biogas.
7. Influent/Effluent Sampling —Please indicate location for sampling of influent to and effluent
from each digester.
Response: Influent sampling will be accomplished via sampling from the influent lift station
or gravity main conveying flushed manure to the digester, where applicable.
Effluent sampling will be accomplished via sampling from the level control wet
well.
8. Waste Level Gauge — Please indicate location/method for measuring waste levels in the
digester, as it does not gravity feed to the secondary containment.
Response: We are unclear of the use of "secondary containment" in this comment; the
liquid level in the digester will be observed and measured via the level control
station.

9. Tail Gas from Gas Upgrading System (GUS) — 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?.
Response: A Gas Upgrading System (GUS) will be installed onsite, and the non -methane
portions of the biogas (remnant biogas) will be returned to the downstream
lagoon. The anaerobic digester doesn't create more biogas than the existing
lagoon system, it simply provides a method for capturing it; the remnant biogas
will be entrained back into the lagoon liquid, which will assist with improved
odor control, and will be naturally emitted as per the previously permitted
facility.
10. Odor Control Checklist — Recommend updating to the new Odor Control Checklist. See
Attached.
Response: Please see attached, corrected Odor Control Checklist.
11. 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. [e-mail]
Response: Please see attached, corrected O&M Plan.
12. 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.
Response: A determination has been made that the emissions fall below the minimum
threshold for permitting; separate communications and correspondence have
been concluded with the Division of Air Quality regarding this topic.
Thank you for your assistance and review of the permit application package. Please do not hesitate to
contact our office should you have any questions, comments, or require any additional information.
Regards,
Cavanaugh & Associates, P.A.
V� e�
Il
Jeff P. Cappadona, P.E.
Attachments

cc: Stan Bowles

Swine Farm Waste Management — Odor Control Checklist
INSTRUCTIONS FOR USE
Aw5
Permit No.: 31 00 3
Date:
Owner Signature:r���
♦ Odor Control Checklist is required by General Statute 143-215.10C(e)(1)
♦ Check any/all the BMPs you will implement on this facility. Items checked/selected become a requirement of the CAWMP.
♦ Items in bold or pre -selected are required.
♦ Add any site -specific details related to the selected BMPs
♦ Include any other odor control measures not listed
♦ NOTE: Not all BMPs may be cost-effective for every facility. Evaluate each BMP prior to selecting for your facility.
Cause/Source BMP Option to Minimize Odor Comments Site Specific Practices
FARMSTEAD
♦ Swine Production /Maintain vegetative or wooded buffers at or
near property boundary
♦ Improper drainage Grade and landscape so water drains away
W
from facilities and prevent ponding
Maintain farm access roads and prevent traffic
in waste application area
❑ Other BMPs — please describe
ii'WAf_,14k9'A0A_,10/_TcIgulgi!k1
♦ Carcass ® Dispose of mortality using method approved
Decomposition by NCDA&CS State Veterinarian. Manage
According to CAWMP (Mortality Management
�Checklist) and permit(s).
J Put carcasses in refrigerated (or freezer) dead
boxes within 24 hours for short-term mortality
• Traps dust and gases, provides dilution
and visual screening
• May require third party input/approval
• Reduce odors and vectors that occur
with stagnant conditions
• Prevents spillage during transport and
tracking of waste onto public roads
• Required by statute and permit
• May require third party input/approval
storage.
♦ Incomplete Incineration ❑ Use incinerators with secondary burners for • Reduce odors by complete incineration
complete combustion.
❑ Other BIVIPs — please describe
Swine AMOC Page 1 of 6 APPROVED — 7/25/2019

Swine Farm Waste Management — Odor Control Checklist
Permit No.: A453160} 3
Cause/Source BMP Option to Minimize Odor Comments Site Specific Practices
HOUSE / BARN — WASTE HANDLING
♦ Flush tanks
❑ stall flush tank covers
• Pit -flush systems
♦ Odorous Gases
Flush pits at least 4 times per day
• Pit -flush systems
♦ Partial microbial
❑ Empty pits at least once every 7 days
• Pit -recharge or "pull -plug" systems
decomposition
❑ Underfloor flush with pit ventilation
♦ Agitation of wastes
❑ Install/extend fill lines to near bottom of
tanks with anti -siphon vents
❑ Install covers on outside waste collection or
junction box
stall sump tank covers for lift stations
♦ Ammonia
VFlush/recharge with treated effluent
❑ Treat waste in pits with proven biological or
• Monitor for any solids accumulation in pit
chemical additive
❑ Other BMPs — please describe
HOUSE / BARN — FLOOR AND INDOOR SURFACES
♦ Manure covered floors ❑ Scrape manure from alleys into pens daily
0 Install fully slotted floor system
d)nstall waterers over slotted floor area
nstall feeders at high end of solid floors
♦ Odorous Gases Scrape manure buildup from floors and walls
Keep floors dry
❑ Install underfloor ventilation for drying
❑ Replace bedding/scrape at frequency to
keep bedding dry
n Other BMPs — please describe
• Will move with other manure via pits
• Where applicable
• Aids in animal cleanliness
• Aids in animal cleanliness
• Solid floor/bedding systems
Swine AMOC Page 2 of 6 APPROVED — 7/25/2019

Swine Farm Waste Management — Odor Control Checklist
Permit No.: Ak'631 00a3
Cause/Source BMP Option to Minimize Odor Comments Site Specific Practices
HOUSE / BARN — VENTILATION
♦ Dust ❑ lean fans regularly — specify frequency
♦ Volatile/odorous gases [Xfficient air movement
[Install temperature and humidity sensors to
control ventilation
❑ Treat barn exhaust
❑ Other BMPs — please describe
HOUSE / BARN — FEED
♦ Dust ❑ Install feed covers
♦ Adsorbed Gases ® Keep outdoor feed storage covered except
When necessary to add/remove feed
Minimize free -fall height of dry feed
® Install feed delivery downspout extenders
to the feed covers
Remove spoiled/unusable feed on regular basis
j Feed pellets instead of dry meal
P1 Use feed additives
♦ Ammonia 9 Use feed -reduced crude protein diet
❑ Other BMPs — please describe
HOUSE / BARN — GENERAL
♦ Dust Vjj Install temperature and humidity sensors
♦ Odorous Gases to control ventilation
❑ Use ultraviolet light to treat indoor air
❑ Use indoor or outdoor electrostatic space
charge system
❑ Other BMPs — please describe
• Examples: biofilters, wet scrubbing, windbreaks
• May reduce ventilation rate depending on method
• Required by rule 15A NCAC 02D .1802
• May require third party input/approval
• May require third party input/approval
• May require third party input/approval
• Maintain relative humidity at 40 to 65%
• Can be used to treat exhaust air
Swine AMOC Page 3 of 6 APPROVED — 7/25/2019

Swine Farm Waste Management — Odor Control Checklist
Permit No.. &S 3) QQ )�3
Cause/Source BMP Option to Minimize Odor Comments Site Specific Practices
LAGOON / WASTE STORAGE STRUCTURE
♦ Volatile Gases ® Maintain proper lagoon volume
❑ Minimize free -fall height of waste from
discharge pipe to lagoon surface
❑ Extend discharge point of pipe to below lagoon
liquid level
® Maintain proper surface area -to -volume ratio
[�] Use correct lagoon start-up procedures
❑ Aerate for odor control
® Manage sludge levels based on annual sludge
survey as required by permit
EN Keep spilled feed or foreign debris out of lagoon
to prevent excess sludge accumulation
❑ Install/use solids separation system
❑ Use proven biological or chemical additives
❑ Use permeable lagoon covers (not a digester)
D] Use impermeable lagoon cover or
anaerobic digester
❑ Other BMPs — please describe
LAND APPLICATION
♦ Odorous gases ® Perform land application in accordance with
CAWMP
♦ Wind drift ® Pump intake near lagoon surface
❑ Pump from second stage lagoon
Follow good neighbor policy
❑ Operate at minimum recommended pressure
❑ Increase setbacks beyond those required by
statute, rule, or permit
• Sufficient liquid volume/depth is required
for proper anaerobic treatment
• Use caution not to scour or damage lagoon liner
• Monitor for any increase in rate of solids accumulation
• Methane can be flared if not utilized
• Required by rule 15A NCAC 02D .1802
-Avoid application on known weekends,
special days, or holidays/eves if possible
Swine AMOC Page 4 of 6 APPROVED — 7/25/2019

Swine Farm Waste Management — Odor Control Checklist
Permit No.: Awl )001)_ 3
Cause/Source BMP Option to Minimize Odor Comments Site Specific Practices
LAND APPLICATION (CONTINUED)
SLUDGE DISPOSAL
Apply during favorable wind conditions,
(especially for traveling guns or impact
sprinklers)
AN When practical, apply waste on sunny days
rather than cool, overcast days
CK When possible, apply waste mid -morning to
late -afternoon
• Recommend checking predicted average hourly
wind speed within 24 hours prior to
anticipated start
• Allows for vertical dissipation of odor
• Allows for better vertical dissipation of odor
❑ For traveling guns, use taper -ring or taper -bore • Less odor and drift than ring nozzles
nozzles
[� For traveling guns, use largest -available nozzle
that provides acceptable application uniformity
❑ Replace impact sprinklers with low -drift nozzles
on center pivots and linear move systems.
❑ Use hose -drag system
❑ Use injection method for waste application
❑ Other BMPs — please describe
♦ Odorous gases E9 Transport sludge in covered vehicles or tankers
Apply in thin, uniform layers • Speeds drying and prevents ponding
[5 Incorporate land -applied sludge as soon as • Required within 48 hours or prior to next rain event,
practical after application, and in accordance whichever is first, for conventionally tilled
with permit. bare soils
❑ Use injection method for sludge application
❑ Dewater sludge prior to application
❑ Use alternatives to land application, such as
compost, gasification, energy generation, etc.
❑ Other BMPs — please describe
Swine AMOC Page 5 of 6 APPROVED — 7/25/2019

ADDITIONAL INFORMATION
Air Management Practices Assessment Tool (AMPAT)
AHG-538-A Certification Training for Animal Waste Management Systems: Type A
EBAE 103-83 — Lagoon Design and Management for Livestock Manure Treatment and Storage
EBAE 128-88 — Swine Production Facility Manure Management: Pit Recharge -Lagoon Treatment
EBAE 129-88—Swine Production Facility Manure Management: Underfloor Flush -Lagoon Treatment
EBAE Fact Sheet — Calibration of Manure and Wastewater Application Equipment
EBAE Fact Sheet — Swine Production Farm Potential Odor Sources and Remedies
NC NRCS Standard 359 — Waste Treatment Lagoon
NC NRCS Standard 380 — Windbreak/Shelterbelt Establishment
NC NRCS Standard 422 — Hedgerow Planting
NC NRCS Standard 442 — Sprinkler System
Nuisance Concerns in Animal Manure Management: Odors and Flies; PRO107 1995 Conference Proceedings
Options for Managing Odor: A Report from the Swine Odor Task Force
AVAILABLE FROM:
www.extension.iastate.edu/ampat/
NC Division of Water Resources
www.bae.ncsu.edu
www.bae.ncsu.edu
www.bae.ncsu.edu
www.bae.ncsu.edu
www.bae.ncsu.edu
www.nres.udsa.gov
www.nres.udsa.gov
www.nres.udsa.gov
www.nres.udsa.gov
Florida Cooperative Extension Service
NC State University
Swine AMOC Page 6 of 6 APPROVED — 7/25/2019

Anaerobic Digester System O&M
Table of Contents
I. Definitions.............................................................................................................................................2
II. Introduction..........................................................................................................................................
3
III. Description of the Operational Components....................................................................................3
1) Gravity Collection Pipe..................................................................................................................3
2) Influent Pump Station (where necessary)....................................................................................4
3) Anaerobic digester........................................................................................................................5
4) Mixing Pump Station.....................................................................................................................6
5) Effluent Pump Station (where necessary)....................................................................................6
6) Storage Basin.................................................................................................................................7
7) Unison Conditioning System.........................................................................................................7
8) Flare..............................................................................................................................................8
9) Transfer Pump...............................................................................................................................8
10) Stormwater Removal Pump......................................................................................................9
IV. Description of Anticipated Maintenance..........................................................................................9
A. Routine System Maintenance Instructions.......................................................................................9
B. Troubleshooting..............................................................................................................................10
C. Emergency Protocols, Repair, and Replacement............................................................................10
D. Warranty Information.....................................................................................................................11
1) Farm Site.....................................................................................................................................11
V. Provisions for Safety Measures...........................................................................................................11
VI. Spill Prevention and Control Provisions..........................................................................................12
Appendix A: Contact Information.............................................................................................................13
Appendix B: Farm Operations and Maintenance Checklist.....................................................................15
Anaerobic Digester System O&M Page 1 of 16

Definitions
Anaerobic Digestion - A method of wastewater treatment that utilizes the natural
decomposition of the waste by bacteria in the absence of oxygen to produce gases commonly
referred to as biogas.
Anaerobic Digester - A basin or tank that holds the wastewater for anaerobic digestion.
Biogas - Produced by anaerobic digestion, and is typically comprised of approximately 55%
methane (the primary constituent of natural gas), with the remainder being mostly carbon
dioxide (COA.
Anaerobic Digester System O&M Page 2 of 16

II. Introduction
The proposed swine manure biogas project uses anaerobic digestion of hog barn waste to
produce biogas (consisting of approximately 65% methane, which is the primary constituent of
natural gas) which is collected, conditioned, and ultimately injected into the utility's natural gas
pipeline. Each hog farm site includes influent collection piping from the hog barns, an anaerobic
digester or covered lagoon, a digester mixing system, a biogas conditioning system to remove
moisture, a back-up flare unit, and a biogas transfer pipe leading to the Gas Upgrading System
(GUS).
The anaerobic digesters at each farm site include an HDPE membrane cover to capture the
biogas generated by the anaerobic digestion process. The anaerobic digester is partially mixed
by pumping, and provides sufficient detention time to effectively reduce the volatile suspended
solids in the raw waste by anaerobic digestion. The reduction of volatile solids through
microbial processes produces an energy -rich biogas, which is a valuable commodity.
There are two (2) types of solids found in liquid waste: organic and inorganic. The inorganic
solids are "non -treatable," but they are normally present in such small quantities that they are
considered insignificant in the treatment process. However, excessive quantities of sand, grit,
clay, etc. can cause the need to pump out the digester more often.
The organic solids will break down and decompose by biochemical reduction. The bacteria that
is grown and maintained in the system are harmless anaerobic and anoxic bacteria. These same
bacteria are provided by nature and are found in streams, lakes, and in the soil to destroy dead
plants and animals. The difference is that in the treatment process, man has provided an ideal
environment for a concentration of these bacteria to feed and grow; thus, the biological action
is greatly accelerated.
Raw wastes are the food for the bacteria in the system. The anaerobic digester contains certain
populations of bacteria that do not require the presence of oxygen.
In addition to the information covered by this manual, the system operator should become
familiar with the characteristics of the wastewater being treated and with local, state, and
federal laws which may apply to the operation of the system.
Design Flow - The waste collection system, influent pump station (where necessary), and
anaerobic digester systems have been designed to handle the Average Daily Flow Rate (ADF) of
the farms in which they are connected, including the manure and wastes generated by the
animals, flushing liquids, and other wastes typical of confined swine animal housing. All
treatment units were designed for the Design Flow for continuous, seven (7) days per week
operation.
III. Description of the Operational Components
Below are listed the major component operations.
1) Gravity Collection Pipe
Anaerobic Digester System O&M Page 3 of 16

The gravity collection pipe receives the flushed waste from the hog barns and directs
that waste to the influent pump station (or mixing pump station, where applicable).
During normal operation, the pipe should be free -flowing, with no clogs present, in
order to transport waste to the influent pump station or other downstream processes.
The gravity collection pipe includes a series of clean -outs that provide access to the
gravity collection pipe for removal of a clog or blockage via use of a sewer snake or
similar apparatus should the need arise.
Sending flushed waste from the hog barns to the gravity collection pipe is the farmer's
responsibility. The operator of the biogas system should periodically check each hog
barn waste outlet to ensure that there are no overflows, clogs, etc. The influent pump
station includes an analog run-time meter for each pump, which can be monitored by
the operator to ensure the pumps are operating for sufficient times to indicate proper
flushing by the farm owner.
2) Influent Pump Station (where necessary)
The influent pump station receives waste from the gravity collection pipe and pumps
that waste to the anaerobic digester via buried forced main. The waste enters the
digester at the opposite end of the digester outlet (so "new' waste must flow through
the curtain baffle system of the digester, resulting in effective treatment of the waste).
During normal operation, the pump station will automatically cycle on and off based on
the liquid level in the wet well, which is triggered by 4 floats.
The lowest float is the "pump off' float, and is set at approximately 12" above the
bottom of the wet well. The pump station should not run if the liquid level is below this
float.
The 2nd lowest float is the "lead pump on" float, and is set at an elevation approximately
2" below the inlet pipe invert, and above the "lead pump off' float. When the liquid
level is above this float, only one pump will run at any given time, where the pumps will
alternate between cycles (Pump 1 will run while Pump 2 is off, and in the next cycle
Pump 2 will run while Pump 1 is off, and so on).
The 3rd lowest float is the "lag pump on" float, and is set approximately 6" above the
"lead pump on" float. If the liquid level fills above this float, then both pumps will run
until the "pump off' float is disengaged.
The 4th and highest float is the "high level alarm" float. When the liquid level is above
this float, an audible and visual alarm is triggered to alert the operator system that there
is a problem that has prevented pump operation.
The pipe from each of the two pumps goes through a check valve (which only allows the
liquid to travel in one direction) and a plug valve (normally open, but can be closed
when needed, such as when servicing the upstream pump). The two pipes join together
by a tee, and the downstream pipe leads to the inlet of the digester.
Anaerobic Digester System O&M Page 4 of 16

During normal operation, the pumps may run several times an hour to pump waste to
the anaerobic digester. Only one pump will run at any given time, normally, where the
pumps will alternate between cycles (Pump 1 will run while Pump 2 is off, and in the
next cycle Pump 2 will run while Pump 1 is off, and so on). It is not uncommon,
however, for both pumps to operate during higher inlet flows.
The pumps can also be controlled manually, if desired, or in times of troubleshooting,
etc. The control panel next to the pump station includes toggle switches for each pump,
which can be set to either (1) Auto (for normal float -based operation), (2) Off, or (3)
"Hand" (i.e., manual operation).
The alternating of pumps can also be changed within the control panel, where a toggle
switch allows the operator to choose "Lock 1", "Alternate", or "Lock 2". During normal
operation, the toggle switch will remain at "Alternate" in order to alternate the pumps
between pumping cycles, but the operator can choose to lock the use of Pump #1 or
lock the use of Pump #2 if needed.
In the event of a pipe clog or pump failure, the waste will flow through the gravity
"digester bypass" pipe connecting the interior of the pump station to the existing lagoon
at an elevation below the top of the wet well, which will avoid overflow of the pump
station.
Note: Some farms do not have Influent Pump Stations; rather than using an Influent
Pump Station, the waste flows from the barns to the Mixing Pump Station, which is
further described below.
3) Anaerobic digester
The anaerobic digester receives all raw wastes from the hog barns. The complex organic
wastes are broken down to simpler compounds by the anaerobic digestion process. As
a part of the anaerobic process, bio gases (including methane, carbon dioxide, and
hydrogen sulfide) are produced. These gases are captured by an impermeable cover
and then directed to the biogas conditioning system for dehydration and pressurization.
The gases are collected in perforated piping underneath the cover, which are connected
to a main pipe that connects to the conditioning system. The wastes are held for about
45 days to allow the biological process to complete. The sludge that settles at the
bottom of the digester is periodically removed by connecting portable pipes and pumps
to the sludge removal pipes in the digester, and disposed of by permitted means on the
farm or by a contract sludge hauler.
During normal operation, the digester cover will likely be "inflated" like a balloon due to
the biogas that's trapped beneath. The cover should be free of excessive accumulation
of rainwater, and should not show signs of any damage or leaks. The presence of foul
odor, a strong wastewater smell, or "dirty" water on the cover may indicate that there is
a leak. If such odors or dirty water are observed, the operator should carefully inspect
the cover for leaks, and take action to repair the cover temporarily with adhesive tape.
Temporary repairs should be followed with a permanent repair or patch as soon as
possible.
Anaerobic Digester System O&M Page 5 of 16

4) Mixing Pump Station
The mixing pump station slowly mixes the waste that has been collected in the
anaerobic digester, which provides for more efficient methane production than would
be achievable without any mixing.
During normal operation, the pumps will run at the same time for several hours per day
to mix the waste in the anaerobic digester. A common schedule for the pumps would
be 6 hours on, then 6 hours off, and so on.
The pumps can also be controlled manually, if desired, or in times of troubleshooting,
etc. The control panel next to the pump station includes toggle switches for each pump,
which can be set to either (1) Auto (for normal operation), (2) Off, or (3) "Hand" (i.e.,
manual operation).
5) Effluent Pump Station (where necessary)
The effluent pump station receives liquids from the anaerobic digester and pumps that
waste to the downstream influent storage lagoon via buried forced main. The liquid
enters the effluent pump station at the opposite end of the digester inlet (so "new"
waste must flow through the curtain baffle system of the digester, resulting in effective
treatment of the waste).
During normal operation, the pump station will run based on the liquid level in the wet
well, which is triggered by 4 floats.
The lowest float is the "pump off' float, and is set at approximately 12" above the
bottom of the wet well. The pump station should not run if the liquid level is below this
float.
The 2nd lowest float is the "lead pump on" float, and is set at an elevation approximately
2" below the inlet pipe invert, and above the "lead pump off' float. When the liquid
level is above this float, only one pump will run at any given time, where the pumps will
alternate between cycles (Pump 1 will run while Pump 2 is off, and in the next cycle
Pump 2 will run while Pump 1 is off, and so on).
The 3rd lowest float is the "lag pump on" float, and is set approximately 6" above the
"lead pump on" float. If the liquid level fills above this float, then both pumps will run
until the "pump off' float is disengaged.
The 4th and highest float is the "high level alarm" float. When the liquid level is above
this float, an audible and visual alarm is triggered to alert the operator via telemetry
system that there is a problem that has prevented pump operation.
The pipe from each of the two pumps goes through a check valve (which only allows the
liquid to travel in one direction) and a plug valve (normally open, but can be closed
Anaerobic Digester System O&M Page 6 of 16

when needed, such as when servicing the upstream pump). The two pipes join together
by a tee, and the downstream pipe leads to the inlet of the digester.
During normal operation, the pumps may run several times an hour to pump waste to
the lagoon. Only one pump will run at any given time, normally, where the pumps will
alternate between cycles (Pump 1 will run while Pump 2 is off, and in the next cycle
Pump 2 will run while Pump 1 is off, and so on). It is not uncommon, however, for both
pumps to operate during higher inlet flows.
The pumps can also be controlled manually, if desired, or in times of troubleshooting,
etc. The control panel next to the pump station includes toggle switches for each pump,
which can be set to either (1) Auto (for normal float -based operation), (2) Off, or (3)
"Hand" (i.e., manual operation).
The alternating of pumps can also be changed within the control panel, where a toggle
switch allows the operator to choose "Lock 1", "Alternate", or "Lock 2". During normal
operation, the toggle switch will remain at "Alternate" in order to alternate the pumps
between pumping cycles, but the operator can choose to lock the use of Pump #1 or
lock the use of Pump #2 if needed.
The gravity outlet of the anaerobic digester leads to the inlet of the effluent pump
station, and the invert is set at the freeboard of the digester so that the digester
maintains a constant level. The inlet pipe to the effluent pump station should remain
submerged in water at all times to prevent the escape of gases from beneath the
digester cover.
Note: Some farms do not have Effluent Pump Stations; rather than using an Effluent
Pump Station, the waste gravity flows from the anaerobic digester to the lagoon.
6) Storage Basin
The effluent of the anaerobic digester flows from the anaerobic digester outlet pipe to
the storage basin. The storage basin is used to store the treated effluent subsequent to
anaerobic digestion. The individual farm owners are responsible for the operation and
maintenance of the storage basins. However, as this is a critical part of the integrated
system, the Operator should note any abnormal operation of the storage basin, such as
leaks or excessive liquid level, and communicate such observations to the farm owner.
During normal operation, the storage basin will most often appear to be inactive. Waste
will periodically flow from the anaerobic digester outlet pipe into the storage basin via
gravity. The outlet pipe from the anaerobic digester into the storage lagoon should
remain submerged at all times to prevent the escape of gases from beneath the digester
cover. As such, it is not uncommon for the pipe to turn down and follow the direction of
the inner slope of the lagoon to ensure submergence during times when the lagoon
liquid level may be low due to normal pumping and irrigation activities.
7) Biogas Conditioning System
Anaerobic Digester System O&M Page 7 of 16

The Biogas conditioning system receives biogas from the anaerobic digester and
removes moisture from the biogas by means of compression and heat exchangers.
This system will be managed by a 3rd party, but the information is included in this O&M
for reference.
The biogas from the anaerobic digester is commonly at 100% relative humidity; the
biogas is purported to be near 6% relative humidity after going through the conditioning
system. The moisture that is removed should be directed back to the digester mixing
pump station or other suitable reception pipe for proper management of the
condensate.
During normal operation, the conditioning system should run without any need for
input from the system operator. Audible and visual alarms will indicate issues with the
system. The discharge pressure and flow rate can be manipulated by the operator
through adjustment of the pressure regulator on the bypass line and through
adjustment of the variable frequency drive. The automatic shutoff feature, whereby the
operator can set the vacuum pressure shutoff point. As the biogas conditioning skid
approaches this setpoint, it will automatically reduce blower or compressor speed to
seek a flowrate that matches the biogas production. If the vacuum pressure exceeds
the setpoint, the biogas conditioning skid will shutdown and trigger an alarm to the
operator via telemetry system.
8) Flare
During normal operation, the flare located at each farm should not necessary. In times
of need, such as catastrophic failure of the biogas conveyance pipeline, the flare may
need to be operated to consume excess accumulated biogas from the digester. The
flare is not an automated system, and the Operator must articulate the biogas piping
control valving to direct biogas from the digester to the flare, and ignite the flare. Care
must be taken by the Operator in igniting the flare, as biogas is highly flammable.
Each flare also has a condensate trap manhole. Contained inside is a small PVC drain
pipe and PVC drain valve. The PVC drain valve should remain closed at all times unless
the Operator is removing condensate. Should the valve be left open, biogas will escape
from the piping. Periodically, and at a frequency determined appropriate by the
Operator, these condensate traps will be opened momentarily to drain and remove any
condensate collected in the piping. It is recommended that the condensate drain valve
only be opened when the biogas piping is pressurized, as should the valve be opened
under no pressure, ambient air may enter the biogas piping and challenge biogas
upgrading by the GUS.
9) Transfer Pump
The transfer pump transfers accumulated effluent among available storage basins as the
farm owner deems necessary to optimize effluent storage. The transfer pumps are
simply and manually operated through use of a local disconnect. Under normal
Anaerobic Digester System O&M Page 8 of 16

circumstances, the transfer pump will only be used periodically and infrequently by the
farm owner.
10) Stormwater Removal Pump
A stormwater removal pump is kept at each digester site in order to remove
accumulated rainwater from the top of the basin cover. The pump can be powered by
any standard 120v outlet that's available nearby, such as the accessory outlet installed
adjacent to the digester mixing pump station. The pump should be placed in a low spot
on top of the cover, and the pump outlet should lead to an appropriate area for
stormwater discharge (on some sites, pipes have been placed to easily receive the pump
outlet pipe, which leads to the natural stormwater drainage swales on the property).
IV. Description of Anticipated Maintenance
Once the system has been started up and is operating efficiently, very little maintenance will be
required. Simple tests should be periodically performed to evaluate the performance of the
wastewater treatment components, and the system components visually inspected daily.
A well -operated, properly adjusted, system will exhibit the following visible signs of proper
maintenance:
• All pipes should be intact and watertight.
• The pumps should be nearly silent with little to no vibration.
• The anaerobic digester should be free of excessive accumulation of rainwater.
• Accumulated rainwater may be removed with a portable sump pump. The pumped water
may be discharged safely on adjacent vegetated areas, or used for a more beneficial
purpose as permitted.
• The anaerobic digester cover should be free of any tears, punctures, or failures.
• There should be no strong odors coming from the digester or flare.
• The storage basin should be clean and free of floating debris. The liquid should be clean and
clear.
A. Routine System Maintenance Instructions
For optimum system operation and maximum treatment efficiency, daily maintenance is
necessary. In addition to the daily maintenance, all mechanical equipment should be
cleaned weekly and lubricated as often as needed, as specified in the operations and
maintenance manual for each piece of equipment provided by the equipment
manufacturer.
The farm owner will need to periodically remove accumulated sludge from the anaerobic
digester. Accumulated sludge may be removed via the anaerobic digester mixing pumps. To
use these pumps for sludge removal, the system operator should cease mixing pump
operation 48 hours prior to the date of desired sludge removal to allow for settling of
heavier sludge to the pump inlet. A quick disconnect fitting is provided for each mixing
pump that will facilitate the connection of the pump discharge to sludge application
Anaerobic Digester System O&M Page 9 of 16

equipment as chosen by the farm owner, such as slurry tanks or umbilical hose application
systems. All sludge applications should be done in accordance with the approved waste
utilization plan and nutrient management plan for the farm or hauled via tanker to an
approved application site by a contract sludge hauler.
Typically, a small amount of sludge will need to be removed from the anaerobic digester
every other year. The system operator can monitor sludge accumulation via the inspection
ports on top of the digester cover. A pipe or gauge with graduated markings used to
determine depth may be used to assess the sludge depth in the digester. Care should be
taken when inserting the gauge or pipe to not apply excessive pressure or otherwise
puncture the digester liner. Sludge accumulation should be assessed on an annual basis by
the system operator. As the digester cover typically accumulates biogas, care should also be
taken by the operator to remove as much accumulated biogas as possible prior to opening
the inspection port and measuring sludge accumulation. As biogas production slows during
cold weather, it is recommended that this measurement occur during the winter when
biogas accumulation is at a minimum.
After completion of sludge removal activities using the anaerobic digester mixing pumps,
the operator should reconnect all fittings and piping as found prior to the sludge removal
and re-engage the digester mixing pumps operation in accordance with the schedule and
manner in which they had been previously operated.
See Appendix C of this document for an operations and maintenance checklist (daily,
monthly, quarterly, semi-annually, annually).
B. Troubleshooting
Refer to equipment O&M manuals as necessary, summarized below:
1. Influent Pump Station
2. Mixing Pump Station:
3. Effluent Pump Station
4. Biogas Conditioning System
S. Transfer Pump:
4" Hog Manure Pump or 4" High Pressure Pump
(Electric Pumps)
8" Flush Pump (Electric Pump)
4" Hog Manure Pump or 4" High Pressure Pump
(Electric Pumps)
N/A
3" Pump (Electric Pumps)
See Appendix A for contact information for each system component.
C. Emergency Protocols, Repair, and Replacement
The O&M Manual kept onsite in the farm office building (or wherever farm records are kept
for each farm) provides step-by-step instructions for field repair or securing the piece of
equipment until qualified repair personnel arrive.
This Manual contains emergency contact numbers for the repair or replacement of the
supplied equipment in Appendix A.
Anaerobic Digester System O&M Page 10 of 16

D. Warranty Information
1) Farm Site
(1) Influent Pump Station: "GEA Farm Technologies... warrants to the original buyer and
end user... that the parts of all equipment sold under the Company trademark are free
from defects in material or workmanship for a period of twelve (12) months from the
date of delivery of the equipment to the Purchaser... Any equipment used for commercial
usage, commercial lease on one or more farms is warranted for a reduced period of
thirty (30) days only."
(2) Anaerobic Digester Liner and/or Cover:
Workmanship: "Plastic Fusion Fabricators, Inc. hereby warrants that the linings
installed by Plastic Fusion Fabricators, Inc. under this warranty shall be installed
free from defects in Plastic Fusion Fabricators' workmanship. The warranty set
forth in the preceding sentence (the "Workmanship Warranty") shall commence
upon acceptance of the work and shall expire on the last day of a period of 1
year from said date..."
Material: "AGRUAMERICA, Inc. (AGRU) warrants its material for a period of
FIVE(5) Years, prorated, from the final project ship date when subsequently
properly installed..."
(3) Mixing Pump Station: "GEA Farm Technologies... warrants to the original buyer and end
user... that the parts of all equipment sold under the Company trademark are free from
defects in material or workmanship for a period of twelve (12) months from the date of
delivery of the equipment to the Purchaser... Any equipment used for commercial usage,
commercial lease on one or more forms is warranted for a reduced period of thirty (30)
days only."
(4) Effluent Pump Station: "GEA Farm Technologies... warrants to the original buyer and
end user... that the parts of all equipment sold under the Company trademark are free
from defects in material or workmanship for a period of twelve (12) months from the
date of delivery of the equipment to the Purchaser... Any equipment used for commercial
usage, commercial lease on one or more farms is warranted for a reduced period of
thirty (30) days only."
(5) Biogas Conditioning System (managed by 3rd party)
(a) Biogas skid: "This warranty is valid for 30 months from the time the equipment is
shipped from Unison's factory or 24 months from the date of startup, whichever
occurs first."
(b) Biogas Blower / Compressor:
"The goods will be free of defects in material and workmanship for a period of twelv
e (12) months from the date the goods are placed in use by the buyer or eighteen (18
) months from the date of shipment, whichever shall occur first."
(c) Chiller: "24 months from startup, not to exceed 30 months from shipping."
(6) Transfer Pump: "GEA Farm Technologies... warrants to the original buyer and end user...
that the parts of all equipment sold under the Company trademark are free from defects
in material or workmanship for a period of twelve (12) months from the date of delivery
of the equipment to the Purchaser... Any equipment used for commercial usage,
commercial lease on one or more farms is warranted for a reduced period of thirty (30)
days only."
V. Provisions for Safety Measures
Anaerobic Digester System O&M Page 11 of 16

A. Restriction of Access: No persons should enter any portion of the wastewater treatment system
unless performing a repair or routine maintenance, and only then if accompanied by another
person capable of performing life-saving activities should the need arise. No person should Enter
a waste collection pit, pump station well, or any portion of the anaerobic digester unless all
accumulated biogas has been removed via venting or other utilization and sufficient airflow has
been directed to the workspace via fans, blowers, or other means. Personal safety is the
responsibility of the person or organization conducting the work, and not specifically the
responsibility of the farm owner or other associated equipment providers or construction
contractors.
B. Emergency Contacts: Information shall be posted at the gate and in the control room. (There
will be no harmful chemicals used for the anaerobic digestion system).
C. All equipment safety guards, warning labels, safeties, and warning alarms shall be kept in place
and operational at all times.
D. Keep and maintain all clearances as recommended by equipment manufacturers and as required
by law.
E. Keep all open flames and sources of combustion away from gas accumulations. Do not smoke
near the gas collection, conveyance, or combustion components. It is recommended that any
combustion source or open flame be kept to a minimum separation distance of 50 ft from the
anaerobic digester cover.
VI. Spill Prevention and Control Provisions
A. Response to Upsets and Bypasses Including Control Containment and Remediation: Audible
alarms will be provided at all controls stations. The Control System will provide remote alarms
to alert operator of a problem should one occur.
B. Contact Information for Operational Personnel, Emergency Responders, and Regulatory
Agencies: Phone numbers for Emergency Responders and Remediation Agency numbers will be
located by the computers and control systems in the control room.
C. Facility Control Valves will allow operator to isolate Systems if a problem occurs.
Anaerobic Digester System O&M Page 12 of 16

Appendix A: Contact Information
Project Management and Equipment Service Providers:
Management & Equipment
CompanyProject
Contact/Local Service
Influent Pump Station
Lee Brock
Brock Equipment Company
lee@ brockeguipment.com
[phone]
Anaerobic Digester Cover
Plastic Fusion Fabricators, Inc.
Larry Hice
[e-mail]
[phone]
Mixing Pump Station
Lee Brock
Brock Equipment Company
lee@ brockeguipment.com
[phone]
Transfer Pump
Lee Brock
Brock Equipment Company
[e-mail]
[phone]
Flare
ProPump & Controls Inc.
Jeff McGuire
Work: [phone]
Cell: [phone]
[e-mail]
Mechanical Installation & Controls
ProPump & Controls Inc.
Jeff McGuire
Work: [phone]
Cell: [phone]
[e-mail]
Anaerobic Digester System O&M Page 13 of 16

Regulatory and other Agencies:
Christine Lawson
Animal Feeding
1636 Mail Service
[phone]
Operations Program,
Center, Raleigh, NC
Div. of Water
27699-1636
Resources
Anaerobic Digester System O&M Page 14 of 16

Appendix 6: Farm Operations and Maintenance
Checklist
Operator Present:
Time/Date:
Farm System Checklist: Mark Yes/✓ or No/X as applicable, fill in blanks where specified
Manure Collection / Feedstock System
Perform visual appraisal of waste collection system.
Any visible signs of overflow or malfunctioning?
Check influent pump stations. Any Alarms?
Put each influent pump in "Hand". Operating
normally?
Any rattling or unusual noises from influent pumps?
Any observed leaks or spills from pipes, fittings, or
well?
Test the alarm. Functioning?
Excessive accumulation of solids or debris in well?
Agitation system in need of operation?
RECORD THE RUN HOURS FOR PUMP I
RECORD THE RUN HOURS FOR PUMP 2
RECORD THE RUN HOURS FOR PUMP 3
RECORD THE RUN HOURS FOR PUMP 4
Digester System
Perform visual appraisal of digester (walk around).
Any visible signs of overflow or malfunctioning?
Does the cover appear to be leaking gas / odorous?
Any visible tears, rips, or holes observed in the cover?
>10% cover area under stormwater/rainwater?
Check mixing pump stations. Any Alarms?
Put each mixing pump in "Hand". Operating
normally?
(not necessary if mixing pumps running during visit)
Any rattling or unusual noises from mixing pumps?
Any observed leaks or spills from pipes, fittings, or
well?
Excessive accumulation of solids or debris in well?
Agitation system in need of operation?
RECORD THE RUN HOURS FOR PUMP I
RECORD THE RUN HOURS FOR PUMP 2
RECORD THE RUN HOURS FOR PUMP 3
RECORD THE RUN HOURS FOR PUMP 4
Biogas Skid
Are there any alarms?
Are there any fluid leaks observed?
Check oil level — oil needed?
Anaerobic Digester System O&M Page 15 of 16

Excessive vibration of noise?
Are there any visible fluid leaks on skid or chiller?
RECORD THE RUN HOURS FOR GAS COMPRESSOR
Notes
Anaerobic Digester System O&M Page 16 of 16

Table 1: Identification List
Table 2A: Influent Lift Station A (Detail 1/C.3.2A) Table 2B: Influent Lift Station B (Detail 1/C.3.2A)
I\
I\
Section
I Description
IQuantitylUnit
jAdditional Info
Gravity Waste Collection (GWC)
GWC-I-PIPE
12" PVC (DR 35) Gravity Collection Line
350
L.F.
GWC-2-CO
lCleanout
3
each
Influent Lift Station & Forcemain (ILS)
ILS-IA-PS
Influent Lift Station A
-
-
Table 2A/C.2.15.1 and Detail 1/C.3.2A
ILS-2A-INV
12" Digester Bypass Inlet A
-
-
Inv.116.75'
ILS-3A-PIPE
12" PVC (DR 35) Digester Bypass Pipe A
39
L.F.
ILS-4A-INV
--------
ILS-IB
8" Digester Bypass Outlet
--------------------
Influent Lift B
-
----
-
-
-
-
--PS
Inv. 116.43'
-----------------
Table---2B/C.2.15.1and Detail 1/C.3.2A
ILS-2B-INV
12" Digester Bypass Inlet B
-
-
Inv. 105.00'
ILS-313-PIPE
12" PVC (DR 35) Digester Bypass Pipe B
45
L.F.
ILS-4B-INV
---------
ILS-5A-FM
8" Digester Bypass Outlet B
--------------------
8" HDPE (DR 17) Forcemain
-
----
441
-
--
L.F.
Inv. 104.65'
--------------------
ILS-5B-FM
8" HDPE (DR 17) Forcemain
1,362
L.F.
ILS-6A-INV
8" HDPE (DR 17) Forcemain Inv. Out
-
-
Inv. 104.09'
ILS-6B-INV
8" HDPE (DR 17) Forcemain Inv. Out
j Inv. 104.09'
Digester (D)
D-1-DIGESTER
Proposed Digester
-
-
Table 4/C.2.15.1 and Sheet C.3.4A
D-2-MS
Mixing Station
-
-
Table 3/C.2.15.1 and Sheet C.3.3
D-3-PIPE
12" PVC (DR 35)
48
L.F.
D-4-SUMP
HDPE Sump Box Mixing System Inlet
Not used
D-5-FM
12" HDPE (DR 17) Forcemain
27
L.F.
Inv. Out 104.09'
D-6-PRA
Pump Repair Area
-
-
D-7-BAF
HDPE Baffle (Underflow)
-
-
Sheet C.3.4A
D-8-BAF
HDPE Baffle (Overflow)
Not used
D-12-SLG
ISludge Removal Pipes (HDPE DR 17)
1 120
L.F.
3 pipes at40 L.F. each
Level Control (LC)
LC-1-INV
Digester Inv. Out
-
-
Inv. 105.15'
LC-2-PIPE
12" PVC (DR 35) Digester Outlet Pipe
20
L.F.
LC-3-PS
Level Control Station
-
-
Table 5/C.2.15.1 and Detail 1/C.3.213
LC-4A-FM
6" HDPE (DR 17) Forcemain
377
LC-4B-FM
6" HDPE (DR 17) Forcemain
1,133
LC-5A-INV
Lagoon Invert From Digester
-
-
Inv. 116.43'
LC-5B-INV
Lagoon Invert From Digester
-
-
Inv. 104.65'
Recycle Forcemain
R-1
6" HDPE (DR 17) Forcemain
6711
L.F.
Table 3: Mixing Station (Detail 1/C.3.3) \
Finished Grade:
108.54
ft
Rim:
109.04
ft
Invert In:
99.54
ft
Bottom of Wet Well:
99.04
ft
Depth of Wet Well:
10.00
ft
Selected Pump Rate:
1,000 (1 pump)
gpm
Pump Horsepower:
7.5 hp
Electrical Supply:
480 V
Electrical Frequency:
60 hz
Phase:
3o
Table 5: Level Control Station
Finished Grade:
108.54
ft
Rim:
109.04
ft
Invert In:
102.94
ft
Bottom of Wet Well:
101.04
ft
Depth of Wet Well:
8.00
ft
Design Flow:
-
gpm
Selected Pump Rate:
440 (1 pump)
gpm
Total Dynamic Head (TDH):
29
ft
Pump Horsepower:
10 hp
Pump Speed (RPM):
1,760 RPM
Electrical Supply:
240V
Electrical Frequency:
60 hz
Phase:
10
Impeller Diameter:
8 in.
MotorType:
TEFC
Selected Pump:
GEA
Pump Model:
4" Hog
Shaft Length:
8 ft.
\
I
I
I
I
\
1
\
I
\
I
I
I
\l
1
I
I
�I 1
1 1
1 1
I
1 I
1 / I
I
11 I
I I
� I \
\ \ \ _ILS=B CONTROL OL PANEL F`� SEE ELECTRICAL SHEETS
\
\ INSTALL IFM AND EFM ABOVE EXISTING
\ STORMWATER CULVERT i II I / / / f J / _ I I \ /
\ WITH 3' MIN. COVER. I)II /l/I / I� ��� / �� /r \\ 1 1 I I /b n\�-� O 6�� �5B
/ \ CONTRACTOR SHALL MANAGE EROSION AND O 6
- -110- - - - _ / \ SEDIMENT CONTROL AS INSTALLATION IS I II I ILL A INILVS -2B
BEING PERFORMED, INV ////// // // ////// /// /�// //� //////.// //////// ///// / //////• /// / �/ //i / �///_
1,L
INSTALL SEDIMENT FENCE AS NECESSARY n-10M
IS/ -- - ��----_=i__
L ILS-1B
°�----
111----- PS EXISTING LAGOON 3/S\\ ILS-413 TOP OF DIKE 105.65'//4
,� I�
I \ - - _-------- IS-�/------PIPE
LC-4B _ _ _- _-_-_-
III \ \ I F / , FM _ __- -_-- ____���\\\ \ \ ��s� �� (/ cl r--, \\\\\\ \ \ �
I I l II I I\\\ \\ \ \ S� - \�` I �\ \\\\\\
\ TOP OF DIKE 117.43' \ ) I I I l I \ I I I° LC-3 - - - _ - - - -I
_ I I PS
-Table 4: Digester Data Table \ - ,\ \ / I ` \ I �a- - - _ 108 \\\ \ \/,� _ \
g - \\\ I I 1 l I I �, \ \IIII I =-- II \\\\\ \\� >�. \`\
\
Length:
315
ft
Width
190
ft
Top of Dike Elev:
108.09
ft
Operating Level Elev:
105.40
ft
Bottom Elev:
94.59
ft
Total Volume:
598,442
cf
Volume at Operating Level:
446,265
cf
S.A. @ Inside Top of Dike:
59,850
ftz
Slope:
Existing
Total Cut
Total Fill
Net Surplus
0
CY
0
CY
0
CY
--- --- _ I - _\ l I I I - , , \ \/ / \ \\ -�- \\\\
- -- - - - - - - - - - -_ _ �111 I \ I \ - I \ \IIII I I LC-2 PROPOSED RAINWATER PUMP \ \� \ ��
I \ I I AND RAINWATER OUTLET
ILS-56 \ I I I I PIPE SEE DETAIL 4 C 3 6 AND
--- ----------- --- I III \ \ LC-4A FM \ I / ..
I - - - III FM \ \ \ �' I 1 LC-1 SHEET C.3.8 I I I
I� INV I IIIII
VIA,i�/ zosW� Ih NTLCOROL \\\\\4- WA-3 =/ I I
LC DISCONNECT SWITCH I I IIIII I AND PUMP GOES TO
ONE PUMP GOES TO LAGOON 1, I I I I I11I1 II 1 o0I \I I I I III II \ \ (I \ �I• I I \ \ II \ II \\�\\'\\ N\\\\R
LAGOON PROVIDE PIPING,
LC-5A \ II
I I( I( I I / FITTINGS, AND ABOVEGROUND rl \ I I III 1 I J I I\ \ l \\\\\\\\\
INV I II( III VALVES AS NECESSARY TO SWITCH \ I
D-7 I III 1 \ I ' /�
PUMP DIRECTION WHEN NEEDED\ D-1 BAF I I I I I I I _ I
DIGESTER I I IIIII
EXISTING LAGOON 2
� .TO BE CONVERTED TO
I
RECYCLE PUMP - - - - J ANAEROBIC DIGESTER
\ \ I I 1 I I (I II I ( II ( I\-25% compaction factor used for fill INSTALL TOP OF DIKE 108.09\ \II o SLG
GEA-HOULE 3„ I POWER METER PRESSURE CIRCUIBREAKER
PUMP ON PONTOON TO SERVE MPS (30HP)Farm Information I
I PANEL S G
Farm Name:
Bowles & Son Farm #1
Permit Number:
AWS310023
Permitted Capacity:
7,344
25 f 105 d d G h iseGrade: .t
Finished Grade: 118.25 ft Fin
Rim: 119.50ft Rim: 109.00ft _ ���� c �/---------- ----
Invert In: 114.25ft Invert In: 101.25ft _-----�� /�J� r---- '-
Bypass Riser: 118.50ft Bypass Riser: 108.00ftjam/
Bypass Invert Out Wall: 116.75 ft Bypass Invert Out of Wall: 105.00 ft
_ Bottom of Wet Well: 109.50 ft Bottom of Wet Well: 99.00 ft - - - / / / / \/ / /
- Depth of Wet Well: 10.00 ft
- Depth of Wet Well: 10.00 ft
Design Flow: 300 gpm
Design Flow: 300gpm
/ Selected Pump Rate: 820 (1 pump) gpm/%/ \\ � w�� EFM
Selected Pump Rate: 680 (1 pump) gpm _ - - - % E M W� EF EF
Total Dynamic Head (TDH): 40 ft Total Dynamic Head (TDH): 7 ft L
Pump Horsepower: 10 hp
Pump Horsepower: 2x10 hp
/Pump Speed (RPM): 1,760 RPM
Pump Speed (RPM): 1,760 RPM
Electrical Supply: 240 V � / / r Electrical Supply: 240 V - - - / \/ / - I - /
Electrical Frequency: 60 hz � � ��` / I � ' / � BARNS ARE - _ - - Electrical Frequency: 60 hz ,FLUSH TANK li
Phase: 1° NAD 83 2007
/ / i \ - i / I \
Phase: 10
Impeller Diameter: 8 in. - Impeller Diameter: 8 in. / - - - _ o
Motor Type: TEFC \ \
Motor Type: TEFC / „/ / - \` - - \ \ rn
Selected Pump: GEA / / / / / \ \ 1 T' / 1 / / /� \ \�� SCALE: 1 " = 60'
Selected Pump: GEA I \ �\� \ � \
Pum Model: 4 High Pressure / / / /
Pum Model: 4" Ho P g J /// I 1 1 o° \ \ \ \ m I '-- / I // / /// \ ` 60 0 60 \
p g Shaft Length: 10 ft. o
Shaft Length: 10 ft. \ o >/i - _- 1 \ \\` \ % / l / l� \ / \ \ \ \ o
AO O
\\ J / / / / / �� - - \ / \ 00 rn / ^oh SCALE OF MAP MAY VARY \
\N - / l /l ;� l/jI / // // \ 1\ \\ 11 j /WIRING FROM�� DUE TO METHODS OF REPRODUCTION.
\\
\ \\ \ J
J l I 0e, / / \ / POWER COMPANY
I /� I I \ / / /\ \ \ \ \ ILS-B DISCONNECT SWITCH I / // POWER METER
1411 ll/ \ \\ // \ \ \ \ \ \
I I TO SERVE ILS-B (40HP) � \\
\ NOTE: ALL LINEWORK SHOWN IN
WHITE IS BY AREA 3000
CONTRACTOR
__I /-%-g- \� I Ms,`�� \\ \ I I I
__ / i \- POWER METER
CONTROL
CONTROL/
n GM PANEL
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