040036_01-Design cost estimate_20230607

White Rock Farms, LLC
Anson County, North Carolina

WHITE ROCK FARM, LLC DAIRY
%Rodney Purser
WASTE MANAGEMENT SYSTEM
ANSON COUNTY, NORTH CAROLINA
LOCATION: 1474 Jopennie Road, Peachland, NC
LONGITUDE - 800 14' 47.59" W
LATITUDE - 340 48' 55.42" N
Maximum Number Cattle in Waste Management System
700 MILK COWS
130 DRY COWS
225 DAIRY HEIFERS
Owner Address: PO Box 10, Marshville, NC 28103
Phone: Roddy Cell 704-221-1705
Josh Cell 704-578-3691
BY: Samuel C
APPROVED BY:
DATE:

White Rock Farms, LLC 1 Waste Plan 2023

INDEX
I. Waste Production
II. Waste Management Overview
A. Waste Storage Ponds #l, #2, and #3
B. Number of Cattle in Waste Management System
C. Collection Flush Ditch
D. Sand Settling Lane & Storage
E. Manure Transfer Piping @ Waste Storage Ponds
F. Other Cattle Groups on Farm
G. Control of Silo Leachate and Runoff
H. Clean Water Exclusion
I. Plant Available Nutrients for Waste Utilization
Plan
J. Operation and Maintenance Plan
K. Emergency Action Plan
III. Waste Storage Pond #1 (existing)
IV. Waste Storage Ponds #l, #2 and #3 (Revision to System)
V. Sand Separation System
VI. Dry Cow and Heifer Bedded Barn
VII. Clean Water Exclusion
VIII. Waste Nutrients
A. Waste Volumes
B. Management Facts (Solid Manure)
C. Nutrient Computations
IX. Operation and Maintenance Plan
White Rock Farms, LLC 1 Waste Plan 2023

Appendix
Location Map
Cost Estimate
Earth Work Estimates
Total Dynamic Head Calculations
Waste Management Facility Site Evaluation, waste pond #3
Waste Management Facility Site Evaluation, waste pond #2
Hazard Classification Commentary for Waste Storage Ponds 42
and #3
Erosion and Sediment Control Plan, Waste Storage Ponds
Vegetation Specification
Construction Specification, Earth Fill
Construction Specification, Concrete
Construction Specification, Steel Reinforcement
Construction Specification, Liner for Seepage Control
Construction Specification, Plastic Pipe & Plumbing
Operation and Maintenance Plan
O&M Plan and Emergency Response Plan - Hose Drag
Application System
Geologic Investigations for Pond 43 by NRCS, Geologist
Soil Mechanics Report for Pond #3
Clay Liner Design 5/18/2023
Waste Utilization Plan by Anson Co. Soil and Water
Conservation Office
Old Design information for existing components located in
file in Anson County District Field Office.
Drawings
Plan View
- Waste Storage Pond #3
1
of 7
Plan View
- Waste Storage Pond #2
(Draft)
2
of 7
Embankment
and Liner Detail Pond
#3
3
of 7
Embankment
and Liner Detail Pond
#2 (Draft)
4
of 7
Plan View
- Sand Storage Area (Draft)
5
of 7
Pump Transfer Ponds and Concrete
Chute
6
of 7
Transfer Pipe and Concrete Chute
(Draft)
7
of 7
White Rock Farms, LLC 2 Waste Plan 2023

WASTE MANAGEMENT SYSTEM
I. Waste Production
For the next few years, 700 milk cows, 120 dry cows
and 225 heifers will be housed and fed in freestall barns,
bedded barns and feed alleys on White Rock Farms, LLC dairy
farm and waste stored in waste storage ponds and the bedded
barn.
Milk cows are confined to freestall barns. Freestalls
are bedded with sand. Manure, runoff, and milking parlor
wash water are stored in the waste storage ponds. Waste is
tank hauled, hard hose spread or pumped to a satellite
waste pond planned at the application fields.
Manure and sand are scraped to a flush ditch and
diverted through a sand separation system from the milk cow
freestall barn. Wastewater is pumped from waste pond to
separate sand in a sand lane located next to waste pond #1.
Waste pond #2 is planned to allow manure separation in
waste pond #1 and to provide grayer water for flushing
flush ditch.
Storage for sand with wastewater drainage is planned
for the milk herd at the existing sand lane. Runoff and
wastewater seepage from sand will be stored in waste pond
#1 or #2.
The dairy houses 120 dry cows and 225 heifers in a
bedded barn north of waste pond #1 and dry cows and heifers
are fed at a feed lane. The feed lane has a storage
structure for manure solids at the east end of the
structure. Bedded barn will likely be emptied once a year.
Manure storage for feed alley is emptied approximately
every 45 days.
Runoff from trench silos and commodity sheds will flow
into a vegetated area downstream of storage areas.
II. Waste Management Overview
The waste management system will economically as
possible handle all the waste production described above in
a manner that does not degrade air, soil or water
resources. The system will prevent discharge of pollutants
to surface and ground water by recycling waste through soil
and plants.
It is preferable for White Rock Farms to spread most
of their nutrients on corn land. Computations below show
White Rock Farms, LLC 3 Waste Plan 2023

around 30 days plus in the existing system. Increasing
storage capacity to 10 months will enable the waste system
to use nutrients more efficiently and the waste management
system will be easier to manage.
The planned waste management system includes the
following components:
A. Waste Storage Ponds #1, #2, and #3
Waste Pond #1 will be used for separating manure
solids from liquid waste. Waste ponds #2 and #3 will be
used for manure, liquid storage and 25 year-24-hour
rainfall storage. All the 25-year storms will be stored in
ponds #2 and #3 when the system is completely installed.
Note: Pond #2 will provide wastewater with less manure
solids for flushing sand and manure to sand lane. Cleaner
sand will be harvested for recycling into freestall barns.
The waste storage ponds will store the following
volumes:
1) Runoff from unroofed concrete areas at freestall
barns
2) Runoff @ sand lane and sand storage areas
3) Rainfall minus evaporation on all waste ponds
4) 25 year - 24-hour runoff from all drainage areas
and 25 year - 24-hour direct rainfall on waste
ponds
5) Manure and urine volume
6) Clean water is added to the system at the milk
parlor and other areas such as evaporative
cooling cows.
Another waste source considered is potential cooling
sprinklers in freestall barns and cow holding areas. While
this practice is not currently used on the farm, it
typically is added. It is anticipated that evaporation in
free stall barns and from waste pond surfaces during the
summer will offset part of the cooling sprinkler additions.
The waste storage ponds are located over 100 feet from
the nearest well. The waste storage ponds are located no
closer than 750 feet from any residence other than the
owner or his tenants.
The storage period will be approximately 10 months at
the dairy. The waste ponds will be emptied by agitating
and tank haul, traveling gun and/or hose drag.
White Rock Farms, LLC 4 Waste Plan 2023

B. Number Cattle in Waste Management System
Note: Dry cows and heifers are located under roofed bedded
barn separate from the waste pond system.
Milk Cows - 700
Dry Cows - 120
Heifers 300-1000 lb - 225
C. Collection Flush Ditch
All manure and sand mixtures collected at freestall
barns will be transferred to sand settling area in a flush
ditch/pipe. The velocities are planned between 5 to 10 fps
to keep the sand/manure mixture agitated and moving to sand
lane.
The flow rate in ditch maybe varied after installation
to maximize cleanness of sand harvested and quantity of
sand collected. A flow rate of 1500 gallon per minute in a
24" smooth plastic pipe in transfer ditch should erode and
break-up the sand -manure mixture scraped into the ditch.
D. Sand Settling Lane & Storage
The sand lane and sand storage area are located uphill
of waste pond #1 to settle sand. Sand lanes are designed
to settle sand by reducing flow to low enough velocity to
settle sand. Dropping velocity of waste stream to
approximately 1 fps will settle sand.
Collected sand will be stored at the sand storage area
next to the sand lane. All polluted runoff from the sand
lane and sand storage area will be collected in waste
storage ponds.
E. Manure Transfer Piping @ Waste Storage Ponds
Transfer pipes are used to transfer wastewater from
waste pond to waste pond. Inlet sections are designed with
the intake 2' to 4' below surface of water. Typically, a
water zone is located above settled solids and below the
floating solids in a manure collection pond. Liquid from
the 12" transfer pipe will outlet on a concrete chute or
drop on concrete slab to protect clay liner in waste
storage pond #2. Transfer will be by gravity between ponds
#1 and #2. Waste will be transferred by pump to waste pond
U .
White Rock Farms, LLC 5 Waste Plan 2023

F. Other Cattle Groups on Farm
Other cattle groups are housed away from the main
farm. This plan includes the waste collected at the
freestall barn and bedded barn.
G. Control of Silo Leachate and Runoff
Runoff from trench silos and commodity sheds flows
into a vegetated filter.
Silo runoff is recognized as a serious pollutant and
seepage and runoff is best handled in waste storage ponds;
however, present guidance allows this pollutant to be
filtered. Runoff from the first flush of silos will be
diverted to the vegetated area downstream of trench silos.
Filter planned for silos should be adequate.
H. Clean Water Exclusion
Clean water will be fully excluded from freestall
barns and waste storage ponds. Diversions, culverts, and
guttering are used. Diversions, waterways and culverts
shall have in excess of the 25 yr - 24 hr capacity.
I. Plant Available Nutrients for Waste Utilization Plan
Estimate of Plant Available Nitrogen to collect and
spread each year will be determined. A waste utilization
plan has been completed for the existing dairy.
J. Operation and Maintenance Plan
The owner shall be responsible for operating and
maintaining the system. See plan attached.
K. Emergency Action Plan
The emergency action plan describes emergency
conditions and immediate steps to take to gain control.
See plan in O&M plan attached.
III. Waste Storage Pond #1 (Existing)
1. Normal Runoff and Rainfall Storage
Use average runoff values in Agricultural Waste
Management Field Manual. The 25-year rainfall and runoff
are stored in the waste storage pond.
White Rock Farms, LLC 6 Waste Plan 2023

Drainage areas for design
The drainage for the sand lane is 8,000 sq ft. All other
areas are roofed. The grass drainage area around waste
storage pond and sand lanes is minimal (use 1,000 sq ft).
Concrete areas
- surface
- 8,000 sq
ft
Around
waste pond
- unsurface
- 1,000 sq
ft
Total
Drainage Area
=
9,000 sq ft
Approximate
inside
Top
of Dam area.
Waste
Storage Pond
#1
- Surface -
26,394
sq ft
SURFACE
UNSURFACE
NORMAL
RUNOFF
RUNOFF
MONTH
RAINFALL
%
DEPTH
%
DEPTH NORMAL EVAP.
JAN.
3.88
54
2.10
20
0.78
1.7
FEB.
3.87
55
2.13
23
0.89
1.6
MAR.
4.31
56
2.41
24
1.03
3.1
APR.
3.35
60
2.01
26
0.87
3.8
MAY
3.34
60
2.00
25
0.83
3.9
JUN.
3.90
60
2.34
29
1.13
4.4
JUL.
4.97
63
3.13
30
1.49
4.3
AUG.
4.97
63
3.13
33
1.64
3.9
SEP.
3.87
68
2.63
35
1.35
3.2
OCT.
3.18
63
2.00
32
1.02
2.4
NOV.
2.99
60
1.79
27
0.81
1.7
DEC.
3.50
57
2.00
24
0.84
1.7
Try 2
months: March -April
Surface
Runoff Depth
= 4.42"
Unsurface
Runoff Depth
= 1.90"
Surface Runoff = 4.42"* 8,000 sq ft = 2,947 cu ft
12 in/ft
Unsurface Runoff = 1.90"* 1,000 sq ft = 158 cu ft
12 in/ft
2. Rainfall minus evaporation on waste ponds
7.66 - 6.9 = 0.8" = 0.1 ft/2 months
Waste Pond #1
0.1 ft x 26,394 sq ft = 2,639 cu ft/2 months
3. 25 yr - 24 hr runoff
CN = [(8,000x97) +(1,000x61)1/9,000 = 93
Use 93
Rainfall = 6.46
Runoff = 5.70"
25yr-24hr runoff = 5.70" * 9,000 sq ft = 4,275 cu ft
12 "If t
White Rock Farms, LLC 7 Waste Plan 2023

The surface area in pond at this storage location is
approximately 1.7 feet below the top of dam or 96'x139' or
22,944 sq ft. The storage depth for 25-year runoff is
4,275 cu ft/22944 sq ft or 0.19'.
4. 25 yr - 24 hr rainfall on Waste Pond surface
Rainfall = 6.46" = .54 ft
Waste Storage Pond #1
Volume = 0.54 x 26,394 sq ft = 14,253 cu ft
5. Milking Parlor Wash Water
Volume parlor water includes parlor, foot trim area
and misc. water use.
Volume = 700 cows x 5 gal/day/cow * 60 days
7.48 gal/cu ft
= 28,075 cu ft/60 days
6. Sand Accumulation
Sand will be removed in the sand lane. If any sand
escapes, waste pond #1 will be cleaned out as needed. No
sand storage is needed in the waste storage pond.
7. Manure
Liquid waste and water from sand separation is
diverted into waste storage ponds #1. Wastewater is
currently pumped from the waste pond #1 to freestall barn
flush ditch.
All waste in waste storage pond will be applied to
cropland.
All the 25-year storm storage will be stored in pond
#1 until pond #2 is constructed.
The Dairy Manure Characteristics table in NRCS
Agricultural Waste Management Field Handbook indicates that
a milk cow producing 75 lb per day of milk will produce 18
gal/day/cow of manure and urine. Use 700 milk cows in the
computation.
Manure and urine volume in waste pond
Volume =700 cows x 18 gal/day/7.48 gal/cu ft x 60 day
= 101,069 cu ft/60 days
White Rock Farms, LLC 8 Waste Plan 2023

8. Freeboard
Pond #1 = 1.0 feet
9. Size of Waste Storage Pond #1
Pond storage is based on storing the normal storage in
the waste pond. The sand lane was constructed lower than
the maximum normal storage volume allowed resulting in
waste backing into sand lane at full capacity. This is
unacceptable from a management perspective.
Wastewater is left in bottom of waste pond to continue
to use the sand separation system (i.e., un-spreadable
volume). The un-spreadable depth is estimated to be 2.1
feet.
Un-spreadable
volume= 2.1/6[46xl89 + 58.6x201.6+ 4(52.3x195.3)]
= 20,455 cu ft
Waste Storage Pond #1
Approx. 26,394 sq ft at As -Built TOD (-478.0)
1.0 Feet Freeboard
— 99.4' X 242.5'
3:1 \ 9.0' / 3:1
Sand Lane Depth - 6.6'
_4 6' X 18 9'
Top Dam - 478.0
Freeboard - 1.0'
End of Sand Lane Elevation - 474.6
Bottom - 468.0
Elevations based on Lidar Data, NCDA&CS survey, and
comparison with As -Built data.
Since the pond is totally excavated, there was no auxiliary
spillway.
Top of Dam Volume -
Volume = 10.0/6[46xl89 + 106x249+ 4(76x219)]
= 169,440 cu ft
Volume below Freeboard -
Volume = 9.0/6[46xl89 + 100x243+ 4(73x216)]
= 144,099 cu ft
White Rock Farms, LLC 9 Waste Plan 2023

Maximum Normal Storage Volume - Volume @ freeboard minus
25-year storage volumes
Volume = 144,099 cu ft - 14,253 - 4,275 = 125,571 cu ft =
939,000 gallons
The maximum normal storage includes un-spreadable
volume that needs to be left in the pond to operate sand
separation system and the volume above the sand lane
elevation that would prevent the use of the sand lane.
Normal Storage Volume below the Sand Lane Elevation -
Volume = 6.6/6[46x189 + 85.6x228.6+ 4(65.8x208.8)]
= 91,540 cu ft
Actual Storage Volume is the Normal Storage minus the
2.1 feet of un-spreadable volume = 91,540 - 20,455 cu ft or
71,085 cu ft.
10. Waste Storage Volume for Pond 41
Waste is hauled or hard hose spread on cropland.
Slurry waste is pumped from pond #1 prior to wastewater
reaching the sand lane elevation. The normal operating
storage period of the system is based on volume between
sand lane and above the un-spreadable volume needed to
operate the sand separation system. Emergency storage is
available above the sand lane and below the 25-year storage
marker.
C4----,-- NT-1 „ —c -F.� Dnnr] Al hAl nca 7r(,PhnArd
Item I
Waste Source
Volume, cu ft
A ISurface
runoff, Milk Cows
2,947
B
Unsurface Runoff, Milk Cows
158
C
Rainfall -Eva Pond #1
2,639
D
25 yr Runoff, Milk Cows
4,275
E
25 yr Direct to pond #1
14,253
F
Manure and Urine
101,069
G
Parlor Water
28,075
H
Un um able Volume
20,455
TOTAL
173,871
12. Normal Storage Volume
Normal Waste Production Volume = 2,947+ 158 + 2,639 +
101,069 + 28,075
= 134,888 cu ft/60 days
= 820,569 cu ft/365 days = 6,138,000 gallon/year
13. Storage Period (May 2023)
The storage below the sand lane elevation and above
the un-spreadable volume was divided by the normal waste
volumes for 2 months of storage.
White Rock Farms, LLC 10 Waste Plan 2023

Period = 71,085 cu ft/(134,888 cu ft/60 days) = 32 days
IV. Storage Pond #1, #2 and #3 (Revision to System)
Two waste storage ponds will be added to the system to
provide additional storage for the planned cropping system.
The storage period will be 10 months for the existing
dairy.
Runoff from sand storage area will be added to the
waste management system. The runoff from the recycled
waste contaminated sand will be collected in waste pond #2.
Manure solids will be captured in waste pond #1 and
routinely pumped to waste pond #3 to extend the storage
period of the system. Wastewater from pond #1 will be
transferred to pond #2 by gravity.
Pond #3 will be constructed prior to pond #2 to
quickly extend the storage period. Pond #2 will be
constructed to collect runoff from the sand storage area
and allow wastewater from pond #1 to be collected to
provide wastewater to operate the sand separation system.
In order to maintain liquid in the waste system to remove
sand from the waste stream, all the waste systems' actual
storage capacity will be in waste ponds #2 and #3 once the
system is fully operational.
1. Normal Runoff and Rainfall Storage for 10-month period
Use average runoff values in Agricultural Waste
Management Field Manual. The 25-year rainfall and runoff
will be stored in a waste storage pond.
Drainage areas for design
The drainage for the sand lane and sand storage will be
8,000 sq ft and 8,325 sq ft, respectively. All other areas
are roofed. The grass drainage area around waste storage
ponds and sand lane will be minimal (use 10,000 sq ft).
Sand Lane Concrete areas
- surface -
8,000
sq ft
Sand Storage Area Concrete
- surface -
8,325
sq ft
Around waste ponds
- unsurface -
10,000
sq ft
Drainage Area = 26,325 sq ft
Approximate inside
Waste Storage Pond
Waste Storage Pond
Waste Storage Pond
Top of Dam areas
#1 - 26,394 sq ft
#2 - 49,050 sq ft
#3 - 65,844 sq ft
White Rock Farms, LLC 11 Waste Plan 2023

SURFACE
UNSURFACE
NORMAL
RUNOFF
RUNOFF
MONTH
RAINFALL
%
DEPTH
%
DEPTH
NORMAL EVAP.
JAN.
3.88
54
2.10
20
0.78
1.7
FEB.
3.87
55
2.13
23
0.89
1.6
MAR.
4.31
56
2.41
24
1.03
3.1
APR.
3.35
60
2.01
26
0.87
3.8
MAY
3.34
60
2.00
25
0.83
3.9
JUN.
3.90
60
2.34
29
1.13
4.4
JUL.
4.97
63
3.13
30
1.49
4.3
AUG.
4.97
63
3.13
33
1.64
3.9
SEP.
3.87
68
2.63
35
1.35
3.2
OCT.
3.18
63
2.00
32
1.02
2.4
NOV.
2.99
60
1.79
27
0.81
1.7
DEC.
3.50
57
2.00
24
0.84
1.7
10 months (Aug - May)
Surface Runoff Depth = 22.83"
Unsurface Runoff Depth = 10.06"
Surface Runoff = 22.83"* 16,325 sq ft = 31,058 cu ft
12 in/ft
Unsurface Runoff = 10.06"* 10,000 sq ft = 8,383 cu ft
12 in/ft
2. Rainfall minus evaporation on waste ponds
37.26 - 27.0 = 10.26" = 0.86 ft/year
Waste Ponds
#1 - 0.86 ft x 26,394 sq ft = 22,699 cu ft/year
#2 - 0.86 ft x 49,050 sq ft = 42,183 cu ft/year
#3 - 0.86 ft x 65,844 sq ft = 56,626 cu ft/year
3. 25 yr - 24 hr rainfall on Waste Pond surfaces
Rainfall = 6.46" = .54 ft
Waste Storage Ponds
#1 - 0.54 x 26,394 sq ft = 14,253 cu ft
#2 - 0.54 ft x 49,050 sq ft = 26,487 cu ft/year
#3 - 0.54 ft x 65,844 sq ft = 35,556 cu ft/year
4. 25 yr - 24 hr runoff
CN = [(16,325x97) +(10,000x61)]/26,325 = 83
Use 83
Rainfall = 6.46
Runoff = 4.6"
25yr-24hr runoff = 4.6" * 26,325 sq ft = 10,091 cu ft
12"/ft
White Rock Farms, LLC 12 Waste Plan 2023

The surface area in pond #2 at the 25-year storage
location is approximately 2.0 feet below the top of dam or
161'x271' or 43,631 sq ft. The storage depth for 25-year
direct rainfall into ponds #1 & #2 and runoff is (14,253 +
26,487 + 10,091 cu ft)/43,631 sq ft or 1.171below the
emergency spillway (use 1.21).
The storage depth for a 25-year storm in pond #3 is
0.6' depth below the emergency spillway.
The 25-year storm storage at dairy is stored in pond
#1 until pond #2 is constructed. The 25-year storm marker
is 0.8 feet below the freeboard prior to constructing pond
#2.
5. Milking Parlor Wash Water
The volume of parlor water includes parlor, foot trim
area and misc. water use.
Volume = 700 cows x 5 gal/day/cow * 300 days
7.48 gal/cu ft
= 140,374 cu ft/300 days
6. Sand Accumulation
Sand is removed in the sand lane. If any sand
escapes, waste pond #1 is cleaned out as needed. No sand
storage is needed in the waste storage pond.
7. Manure
Liquid waste and wastewater from sand separation is
diverted into waste storage ponds #1. Wastewater will be
pumped from the waste pond #2 to freestall barn flush
ditch.
All waste in waste storage pond will be applied to
cropland.
The Dairy Manure Characteristics table in NRCS
Agricultural Waste Management Field Handbook indicates that
a milk cow producing 75 lb per day of milk will produce 18
gal/day/cow of manure and urine. Use 700 milk cows in the
computation.
Manure and urine volume in waste ponds
Volume =700 cows x 18 gal/day/7.48 gal/cu ft x 300 day
= 505,348 cu ft/300 day or 3,780,000 gallons/300 day
White Rock Farms, LLC 13 Waste Plan 2023

8. Freeboard (Emergency Spillway to Top of Dam)
Pond
#1 =
1.0
feet
Pond
#2
= 1.0
feet
Pond
#3
= 1.0
feet
(no Emergency Spillway)
9. Size of Waste Storage Pond #1
Waste Storage Pond #1
Approx. 26,394 sq ft at As -Built TOD (-478.0)
O 3.8 Feet below TOD
83.2' X 226.2'
3:1 6.2' /3.-:1
_46' X 189'
Top Dam - 478.0
Freeboard - 1'
1' Pipe invert - 474.2 Based on NCDA&CS survey elevation of
474.65 at end of Sand Lane (i.e., approximately 0.5 below
sand lane).
Bottom - 468.0
Elevations based on NCDA&CS survey, Lidar Data and
comparison with As -Built data.
Top of Dam Volume -
Volume = 10.0/6[46x189 + 106x249+ 4(76x219)]
= 169,440 cu ft
Volume below Freeboard -
Volume = 9.0/6[46x189 + 100x243+ 4(73x216)]
= 144,099 cu ft
Normal Storage Volume - Pipe Invert to Bottom
Volume = 6.2/6[46xl89 + 83.2x226.2+ 4(64.6x207.6)]
= 83,863 cu ft or 627,000 gallons
Pond #1 will store manure solids and urine volume for
about 50 days.
White Rock Farms, LLC 14 Waste Plan 2023

10. Size of Waste Storage Pond #2
173.2'x283.2'
1.0 Freeboard
167.2' X 277.2'
3:1 1.2 Feet 25-year storage 3:1
160'x270'
10.0' normal storage
100'x210'
Normal storage volume below 25-year storage
Volume = 10.0/6[100x210 + 1601x270'+ 4(130x240)]
= 315,000 cu ft = 2,356,000 gallons
Volume @ ESW Level -
Volume = 11.2/6[100x210 + 167.2x277.2 + 4(133.6x243.6)]
= 368,718 cu ft
Top of Dam Volume -
Volume = 12.2/6[100x210 + 173.2x283.2 + 4(136.6x246.6)]
= 416,411 cu ft = 9.6 ac-ft
11. Size of Waste Storage Pond #3
256. 6' x256. 6'
1.0 Freeboard
250.6' X 250.6'
0.6 Feet 25-year storage
247'x247'
3:1 12.0' normal storage /3-:1
175'x175'
Normal storage volume below 25-year storage
Volume = 12.0/6[l75xl75 + 247x247 + 4(21lx2ll)]
= 539,436 cu ft = 4,035,000 gallons
Volume @ ESW Level -
Volume = 12.6/6[175xl75 + 250.6x250.6 + 4(212.8x212.8)]
= 576,578 cu ft
Top of Dam Volume -
Volume = 13.6/6[175xl75 + 256.6x256.6 + 4(215.8x215.8)]
= 640,893 cu ft = 14.7 ac-ft
White Rock Farms, LLC 15 Waste Plan 2023

12. Unpumpable Volumes in Pond #1, #2 & #3
Pond #1 volume= 1'x46'x189' = 8,694 cu ft
Pond #2 Volume = 1'X100'X210' = 21,000 cu ft
Pond #3 Volume + 1'x 175'x175' = 30,625 cu ft
13. Waste Storage Volumes for Pond #1, #2 & #3
C+-,.,-n,,,no hol rT.r 9C,-N7Par ctnra rf
Item I
Waste Source
Volume, cu ft
A Isurface
runoff, Milk Cows
31,058
B
Unsurface Runoff, Milk
Cows
8,383
C
Rainfall -Eva Pond
#1
22,699
D
Rainfall -Eva Pond
#2
42,183
E
Rainfall -Eva Pond
#3
56,626
F
Imanure and Urine
505,348
G
Parlor Water
140,374
H
Un um able Volume
pond
#1
8,694
I
Un um able Volume
pond
#2
21,000
J.
Un um able Volume
pond
#3
30,625
TOTAL
866,990
14. Storage Volume below the 25-year storage in Ponds #2
and #3
Pond #2 - 315,000 cu ft
Pond #3 - 539,436 cu ft
Total - 854,436 cu ft = 6,391,000 gallons
Note: Close enough considering the unpumpable volume
may be some less than estimated above.
15. Normal Storage Volume per Year
Item
Waste Source
Volume, cu ft
A
Surface runoff, Milk Cows
31,058
B
Unsurface Runoff, Milk Cows
8,383
C
Rainfall -Eva Pond #1
22,699
D
Rainfall-Eva2 Pond 42
42,183
E
Rainfall -Eva Pond #3
56,626
F
Manure and Urine
505,348
G
Parlor Water
140,374
TOTAL
806,671
Volume = 806,671 cu ft/300 days
= 981,450 cu ft/year
= 7,341,000 gallons/year
16. Checking Quantity of Dilution Volume Needed
Total Cattle
700 cows
The average # cows in system is 700_
White Rock Farms, LLC 16 Waste Plan 2023

Average daily volume per cow produced
7,341,000 gallons/year/700 cows/365 days'/year = 28.7
gallons per cow.
Some speculate that between 35 and 70 gallons per day
per cow of liquid is necessary to separate sand to be
reused in freestall barns. 35 gallons/day is usually
adequate for scrape systems that pump water to collection
ditches. The estimated volume per cow is 28.7
gal/day/animal.
Collected sand may be dirty with the amount of normal
storage volume in this system.
17. 25 year pump out markers in Ponds #2 and #3
See section 4 above. Waste storage ponds should be
hauled, irrigated or drag hosed before the water level
reaches the 25 yr - 24 hr storage volume marker in ponds #2
and #3. This elevation is 1.2 ft below the Emergency
spillway in pond #2 and 0.6' below the Emergency spillway
in pond #3.
V. Sand Separation System
A. Sand Storage for Freestall Barns
Freestalls are bedded with sand. The literature
indicates that cattle waste about 40 lbs of sand per day
per stall. The total number of Milk Cows in the plant is
700 animals.
Sand storage requirement
= (700 head @ 40 lbs/cow/day x 90 days)/2000 lbs/ton
= 1,260 tons per 90 days
At 100 lbs/cu ft, 25,200 cu ft of storage volume will
be provided for about 3 months of sand accumulations.
The heavy use concrete sand storage area will be
approximately 50' x 100'. The approximate sand storage
area on this slab will be (50'x100'x5') or 25,000 cu ft. A
couple foot high curb or gravity concrete block wall is
planned around the storage area to confine sand to the
slab. Approx. 90 days of storage shall be available for
reclaimed sand. A 25-foot concrete area is also planned in
front of the storage area to provide loading and piling
access to the sand storage area. Sand is collected each
day and piled about 3 feet deep for one day prior to being
moved to the sand storage area. Piled sand is washed by
rainfall for about 3 months since sand collected is dirty.
The sand pile is accessible from one side of the storage
White Rock Farms, LLC 17 Waste Plan 2023

area to allow access to the cleanest sand when bedding
freestalls.
See plan view drawing.
B. Sand Lane
A flow rate of 1500 gallon per minute in ditches/pipe
should erode and.break-up the sand -manure mixture scraped
and flushed into the collection ditch/pipe.
The manure -sand mixture flows through a 15' wide
channel. The slope of channel is 3" per 100'. Manure
solids and liquid continue down the 15' wide lane to waste
pond #1.
Sand is removed daily from the sand lane. Sand in the
lower leg should be moved to the upper leg to rewash. Sand
traps are not 100% effective. Some sand will need to be
removed from manure settling pond periodically.
VI. Dry Cow and Heifer Bedded Barn
Mr. Purser indicates that a typical bedded barn
provides 120 sq ft per cow. In a years' time, the manure
pack is approximately 28" deep of wood shavings and manure.
Estimated spread volume for dry cows = 130 cows x
400'x40'x2.3' = 36,800 cu ft/year
Estimated spread volume for heifers = 225 heifers x
400' x40' x2. 3' = 36,800 cu ft/year
Total - 73,600 cu ft
At 60 lbs/cu ft, 2,208 tons of bedded pack will be
spread each year.
Cows and heifers are fed at a feed alley that is
scraped daily and stored at the end of barn under the roof
for at least a month or two prior to land applying to
cropland. The volume of scraped manure at bedded barn
based on collecting approximately 25% of manure solids in
feed alley is estimated below.
Volume = 130 cows x 17 tons/cow/yr x 25% = 553 tons
Volume = 225 heifers x 12 tons/heifer/yr x 25% = 675 tons
White Rock Farms, LLC 18 Waste Plan 2023

Total Scraped Manure and Bedded Pack
= 553 + 675 + 2,208 tons/yr = 3,436 tons/year
VII. Clean Water Exclusion
A. Diversions & Waterways
Clean water diversions are located around the waste
storage ponds and freestall barns. Diversions shall carry
the 25 year - 24-hour runoff plus capacity to store some
sediment. Typical diversion is 1.0 feet deep on 0.5% slope
for small drainage areas.
B. Guttering
Clean water is excluded to the fullest extent possible
by guttering.
C. Culverts
Clean water culverts divert clean water under
driveways, gutter outlets from freestall barns, etc. Pipes
shall carry the 25 year - 24-hour runoff.
White Rock Farms, LLC 19 Waste Plan 2023

VIII. Waste Nutrients
A. Waste Volumes
The table below shows the total storage to spread each
year after planned facilities are constructed. The
estimated storage period is also shown for the source.
Also, the capacity of the pond at pump -out level is shown
for each pond. All ponds will be managed as one source.
Waste
Capacity
Volume to
Estimated
Number of
Percent
25 Year Pump
Storage
of Pond
Spread each
Storage
Animals in
Collection
Level
Pond
below 25-
Year
Period
Source
of manure
Feet Below
yr
& urine
Top of Dam
storage
volume
Gallons
source 1
7,341,000
Pond 41,
700 Milk Cows
100%
gallons
#2 & 43
300 days
41
627,000
25 yr in
pond #2
42
2,356,000
Maximum Pump
Level 2.2'
below
top of dam
4,035,000
25 yr in
#3
pond #3
Maximum Pump
Level 1.6'
below top of
dam
B. Management Facts (solid manure)
Manure from bedded barn for dry cows and heifers will
be spread with solid manure spreader.
TOTAL - 3,436 tons
C. Nutrient computations
Manure application shall be based on actual soil test
and manure analysis.
a. Source 1 - Waste Storage Pond #1, #2 and #3
The nutrient content per year is shown below for a
broadcast application system. Nutrient values are from the
NC Agricultural Chemicals Manual.
White Rock Farms, LLC 20 Waste Plan 2023

700 - Milk Cows
TOTAL NUTRIENTS
TATTTT1:?TT+TNTT
DISPOSAL LOSSES
AVAILABLE
(Nutrient availability)
N 90,586 lbs 0.40 36,234 lbs
P205 49,361 lbs 1.00 49,361 lbs
K20 83,534 lbs 1.00 83,534 lbs
4.8 lb N PAN per 1000 gal & 6.5 lb P205 PAN per 1000 gal
b. Source 2 - Dry manure
The nutrient content per year is shown below for a
broadcast application system.
130 - Dry cows
225 - heifers
Total -3,436 tons
TOTAL NUTRIENTS DISPOSAL LOSSES AVAILABLE
_NTTTTRT17T\TT
(Nutrient availability)
N 54,992
lbs
0.40
21,997 lbs
P205 34,370
lbs
1.00
34,370 lbs
K20 48,118
lbs
1.00
48,118 lbs
6.4 lb N PAN
per ton
& 10.0 lb P205 PAN per
ton
IX. Operation and Maintenance Plan
The waste management system will keep pollutants out
of the streams and rivers if the 25 yr -24 hr storage
capacity is maintained in the waste storage ponds and
diversions for clean water and polluted runoff are
maintained around the system.
Before waste storage ponds reach the high-level mark,
the storage pond shall be emptied. A post will be set with
its top at this elevation.
Vegetation around the waste storage ponds shall be
mowed annually and eroded areas patched. Fencing shall be
checked and repaired as required.
White Rock Farms, LLC 21 Waste Plan 2023

Rough Cost Estimate
By: Sam Bingham, PE
Civil Engineer
May 15, 2023
Item
Quantity
Unit Price
Total
Notes
WASTE STORAGE POND
#3
Earth Fill
10,922 cu yd
5.00
54,610.00
See earth
work
estimate
Clay Liner
4,877 cu yd
10.00
48,770.00
Vegetation, Seeding
2.0
700.00
1,400.00
Vegetation, Mulching
2.0
500.00
1,000.00
Concrete Heavy Use
Chute, 60'x10' in Pond
#3
12.8 cu yd
300.00
3,840.00
Not including
extra for
grading
Steel Heavy Use Area,
Sand Lane
802 lb
1.00
802.00
SUBTOTAL
110,422
WASTE STORAGE POND
#2
Earth Fill
10,665 cu yd
5.00
53,325.00
See earth
work
estimate
Clay Liner
3,633 cu yd
10.00
36,330.00
Vegetation, Seeding
1.7
700.00
1,190.00
Vegetation, Mulching
1.7
500.00
850.00
Concrete Heavy Use
Chute, 90'x8'
Pond #2
15.3 cu yd
300.00
4,590.00
Not including
extra for
grading
Steel Heavy Use Area,
Sand Lane
962 Ib
1.00
962.00
SUBTOTAL
97,247.00
Concrete Heavy Use
Area, Sand Storage,
8,325 sq ft
244.5 cu yd
300.00
73,350.00
Not including
extra for
grading
Steel Heavy Use Area,
Sand Lane
12,292 lb
1.00
12,292.00
SUBTOTAL
85,642.00
Transfer pipe to waste
pond #1 to pond #2 -12"
SCH 40 PVC pressure
pipe
220 ft
25.00
5,500.00
Gravity
Transfer Pipe
-

Transfer pipe to waste
pond #1 to pond #3 - 6"
C900 PVC pressure pipe
6,400 feet
20.00
128,000.00
Earth Work Estimate Waste Pond #3
Topsoil Removal-105,000 sq ft x 0.5' - 1,944 cu yd
Clay Liner & Cover Volume - 2.0' in bottom and on SS's due to
potential dispersive clay liner and Clay wet/dry cracking
2 . 0' x (256. 6' x256. 6' ) = 4,877 cu yd
Earth Fill - Embankment + 50 + topsoil removed under dam
(105,000-48,000)x.5
9,396 + 470 + 1,056 = 10,922 cu yd
Borrow required for Earth Fill & Liner (10,922 + 4,877) + 200 or
18,959 cu yd
Excavation for Pond - Pond + Clay Liner excavation + Topsoil +
clay liner stockpiled.
12,021 + 4,877+ 1,944 = 18,842 cu yd Additional material
available uphill of site.
Earth Work Estimate Waste Pond #2
Topsoil Removal-93,000 sq ft x 0.5' 1,722 cu yd
Clay Liner & Cover Volume - 2.0' in bottom and on SS's due to
potential dispersive clay liner and clay wet/dry cracking
2.0' x (173.2'x283.21) = 3,633 cu yd
Earth Fill - Embankment + 50 + topsoil removed under dam 43,000
sq ft x.5
9,399 + 470 + 796 = 10,665 cu yd
Borrow required for Earth Fill & Liner (10,665 + 3,633) + 20% or
17,158 cu yd
Excavation for Pond - Pond + Clay Liner excavation + Topsoil
11,720 + 3,633 + 1,722 = 17,075 cu yd Additional material
available near site.

Concrete Heavy Use Area, Sand Storage
Concrete for sand storage
Volume-[8,325 sq ft x0.67') + 15% = 238 cu yd
Steel in concrete - #4 bars on 1' centers
16,650' @ .668 lb/ft or 11,122 lb
2' x 6" Curbs on back and lower side - 175 feet
Volume = 2'x175'x0.5' = 6.5 cu yd
Steel in concrete 1' on centers - 875 feet
875' @ .668 lb/ft or 585 lb
Note: Alternative is 2'x2'x6' stacked gravity wall.
Total concrete = 244.5 cu yd
Total Steel = 11,707 lb + 5% = 12,292 lb
Concrete Chutes, etc.
Pond #3
Concrete Chute, emergency spillway and chute to bottom
Volume-[60'x10'x0.51) + 15% = 12.8 cu yd
Steel in concrete - #4 bars on 1' centers
1,200' @ .668 lb/ft or 802 lb
Pond #2
Concrete Chute for runoff from sand lane and Gravity Transfer
Pipe, pond #1 to pond #2
Volume-[90'x8'x0.5') + 15% = 15.3 cu yd
Steel in concrete - #4 bars on 1' centers
1,440' @ .668 lb/ft or 962 lb

Transfer Pipe Computations
White Rock Farms, LLC
May/19/2023
Total Dynamic Head Calculations for Transfer Pipe from Pond #1
to pond #3 and minimum required Hp
6" pipe
Flowrate -
440
gpm
Pipe Dia.
- 6"
PVC Pipe
Pipe (WP)
- 160
psi
Pump eff.
- 680
Velocity -
5.0
fps
Water Pipe friction loss - 0.52 psi/100 feet
Wastewater Friction loss in pipelines, use estimate of 5% Solids
content (i.e., a multiplier of 2.05 to correct fiction loss
factor)
Corrected Friction loss = 0.52/100 feet x 2.05 or 1.066/100 feet
Pipe Length-6,400'
Total Dynamic Head in feet
PSI Feet
Waste Pond #1 Depth 4.3 10.0
Working Pressure @ end of pipe 0 0
Static Elevation Difference, 383.5-474.5 -39.4 -91.0
6" Pipe Friction Loss, 6400'xl.066 psi/100 68.2 157.6
Minor/misc. losses 5.0 11.6
Total Dynamic Head (TDH) 38.1 88.2
Hp Required = TDH x gpm/(3960xeff.)
= 88.2' x 440 gpm/(3960 x 0.68)
Hp = 14.4 Hp
Maximum normal storage in waste pond #1 is 627,000 gal
Time to Empty = 627,000 gal/440 gpm = 1,425 min or about 24
hours
1of3

Total Dynamic Head Calculations for transfer pipe from Pond #2
to flush ditch and minimum required Hp
Try 12" pipe at
1,762 gpm
Flowrate -
1,762
gpm
Pipe Dia.
- 12"
PVC Pipe
Pipe (WP)
- 160
psi
Pump eff. .
- 68 0
Velocity -
5.0
fps
Water Pipe friction loss - 0.28 psi/100 feet
Wastewater Friction loss in pipelines, use estimate of 20 Solids
content (i.e., a multiplier of 1.25 to correct fiction loss
factor)
Corrected Friction loss = 0.28/100 feet x 1.25 or 0.35/100 feet
Pipe Length -600'
Total Dynamic Head in feet
PSI Feet
Waste Pond Depth 4.3 10
Working Pressure @ end of pipe 0 0
Static Elevation Difference, 484.0-473.0 4.8 11.0
12" Pipe Friction Loss, 600'x0.35 psi/100 2.1 4.9
Minor/misc. losses 5.0 11.6
Total Dynamic Head (TDH) 16.2 37.5
Hp Required = TDH x gpm/(3960xeff.)
37.5' x 1,762 gpm/(3960 x 0.68)
Hp = 24.5 Hp
Try 12" pipe at
1,200 gpm
Flowrate -
1,200
gpm
Pipe Dia.
- 12"
PVC Pipe
Pipe (WP)
- 160
psi
Pump eff.
- 680
Velocity -
3.53
fps
Water Pipe friction loss - 0.11 psi/100 feet
Wastewater Friction loss in pipelines, use estimate of 20 Solids
content (i.e., a multiplier of 1.25 to correct fiction loss
factor)
Corrected Friction loss = 0.11/100 feet x 1.25 or 0.14/100 feet
2of3

Pipe Length -600'
Total Dynamic Head in feet
PSI Feet
Waste Pond Depth 4.3 10
Working Pressure @ end of pipe 0 0
Static Elevation Difference, 484.0-473.0 4.8 11.0
12" Pipe Friction Loss, 600'x0.14 psi/100 0.4 0.8
Minor/misc. losses 5.0 11.6
Total Dynamic Head (TDH) 14.5 33.4
Hp Required = TDH x gpm/(3960xeff.)
= 33.4' x 1,200 gpm/(3960 x 0.68)
Hp = 14.9 Hp
Note: 1200 gpm is on the low side of the required flow rate in a
15' wide sand lane to collect cleaner sand. A flow rate closer
to 1800 gpm would be desirable.
3of3