820005_Digester Volume Calculation Update_20231220

Facility Number: 82-0005
Grower: Kilpatrick Farm Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 10/16/23
County Sampson Sheet 1 of 12
ANAEROBIC DIGESTER DESIGN
FARM INFORMATION
Farm Population:
Nursery:
Wean to Finish: -------------------
Finishing:-------------------
feeder:
25 Yr. / 24 Hr Storm Event
Recycle Flush Water Volume:
DIGESTER INFORMATION
Is Digester Designed as an Irregular Shape? (Y/N)------------ Y
Was This Facility Built Prior to 9/96? (Y/N)------------ N
Is Drain Tile Req'd to Lower SHWT? (Y/N)------------ N
Seasonal High Water Table Elev: -------------------
Freeboard:-------------------
Side Slopes:
Top of Dike Elevation:
Finished Bottom Elevation:
Start Pump Elevation:
Stop Pump Elevation:
Top of Sludge Elevation:
From Lagoon Volume Check Contours
contour areas see sheet 2 of 7...
---------------- Depth
---------------- 10.40 Ft.
---------------- 19.81n.
---------------- 241n.
---------------- 76.81n.
DIGESTER VOLUMES REQUIRED VOL.
Storm Temp=
Temporary =
Operational =
Permanent Sludge =
Total Volume =
115689 (Cu.Ft.)
0 (Cu.Ft.)
426752 (Cu.Ft.)
0 (Cu.Ft.)
542,441 (Cu.Ft.)
Lagoon Surface Area: (Inside TOD)
DESIGN VOLUMES
115,881
(Cu.Ft.)
61,262
(Cu.Ft.)
718,920
(Cu.Ft.)
570,490
(Cu.Ft.)
1,466,552 (Cu.Ft.)
iI
13336 Hd.
0
i,
7.5 In.
C
0.00
1.0 Ft.
3 :1 (H:V)
0.0
0.0
91.40 Ft.
81.00 Ft.
89.75 Ft.
89.40 Ft.
85.00 Ft.
% REQ'D.
100.17%
14.36%
168.46%
270.36%
185,103 S.F
Smithfield Hog Production Engineering P.O. Box 856, Warsaw, NC 28398 [phone]

Face it�um1)er: 82-0005
Grower: Kilpatrick Farm
Address: PO Box 856
Warsaw, NC 28398
Countv: Sampson
Designed By: BHW
Checked By: JEO
Date: 10/16/23
Sheet 2 of 12
ACTUAL DESIGN VOLUME CALCULATIONS
BASE VOLUME: Cu. Ft.
DIGESTER STAGE -AREA VOLUMES
Contour
Elevation (FT.Area SF Incr. Vol. (Cu. FTi
81.00
133,209
82.00
137,851
83.00
142,567
84.00
147,357
85.00
152,221
86.00
157,159
87.00
162,171
88.00
167,257
89.00
172,417
90.00
177,651
91.00
182,959
91.40
185,103
135,530
140,209
144,962
149,789
154,690
159,665
164,714
169,837
175,034
180,305
73,612
Cumul. Vol. (Cu. FT)
0
135,530
275,739
420,701
570,490
725,180
884,845
1,049,559
1,219,396
1,394,430
1,574,735
1,648,347
These volumes were calculated using the vertical average end area method.
TOTAL REQD VOL
578,336
CF
CUMULATIVE
VOL.
ZONE VOL.
0.00%
END PUMP = = = =
89.40
FT
1,289,410 CF
TR'MT
718,920
168.46%
START PUMP = =:
89.75
FT
1,350,672 CF
TEMP
61,262
14.36%
MAX STORAGE =
90.40
FT
1,466,552 CF
STORM
115,881
100.17%
Smithfield Hog Production Engineering P.O. Box 856 ,Warsaw, NC 28398 (91 D) 293-3434

rower: Kilpatrick Farm Storage on esigne may: 9H
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 10/16/23
County: Sampson Sheet 3 of 12
WASTE STORAGE POND DESIGN 2nd STAGE
FARM INFORMATION
Farm Population:
i-------------------
Wean to Finish: -------------------
13336 Hd.
Finishing: -------------------
0
to
r=arrow to fe► C;ei
0
Boars:
0
Storage Period: -------------------
180 Days
100 Yr. / 24 Hr Storm Event -------------------
7.5 In.
"Heavy Rain" Factor Not Applicable Even if Value Shown
0
Rainfall in Excess of Evaporation -------------------
7 In.
Additional Water Usage: -------------------
0
Additional Drainage Area: -------------------
0
STORAGE INFORMATION
Is Storage Pond Designed as an Irregular Shape? (Y/N)------------
Y
Does Operator Want Emergency Spillway?
(Y/N)------------
N
Was This Design Built Prior to 9/96?
(Y/N)------------
Y
Is Drain Tile Req'd to Lower SHWT?
(Y/N)------------
N
Seasonal High Water Table Elev:
-------------------
0.00
Freeboard:
-------------------
1.0
Ft.
Emergency Spillway Flow Depth:
Not Applicable Even if Value Shown
0.3
Ft.
Side Slopes:
-------------------
3
:1 (H:V)
From Lagoon Volume Check Contours
0.0
contour areas see sheet 2 of 7...
0.0
Top of Dike Elevation:
---------------- Depth
103.10
Ft.
Finished Bottom Elevation-
---------------- 10.20 Ft.
92.90
Ft.
Start Pump Elevation:
---------------- 19.92 In.
101.44
Ft.
Stop Pump Elevation:
---------------- 96.12 In.
95.09
Ft.
STORAGE VOLUME REQUIRED
VOL. DESIGN VOLUMES
% REQ'D.
Storm Stor = 95577
(Cu.Ft.) 96,349 (Cu.Ft.)
100.81 %
Temporary = 709768
(Cu.Ft.) 828,855 (Cu.Ft.)
116.78%
Permanent = 0
(Cu.Ft.) 245,184 (Cu.Ft.)
Total Volume = 805,345
(Cu.Ft.) 1,170,388 (Cu.Ft.)
145.33%
90 Temporary Storage Volume Elevation = 97.80 Ft. 1 63.62 In.
Lagoon Surface Area: (Inside TOD)------------------- 152,923 S.F.
Smithfield Hog Production Engineering P.O. Box 856, Warsaw, NC 28398 [phone]

grower: Kilpatrick Farm Storage Pond Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 10/16/23
County: Sampson Sheet 4 of 12
ACTUAL DESIGN VOLUME CALCULATIONS
BASE VOLUME: Cu. Ft.
STORAGE POND STAGE -AREA VOLUMES
Contour
Elevation (FT. 7
Area iSFj
Incr. Vol. (Cu. FT)
92.90
107,341
93.00
107,749
10,754
94.00
111,876
109,813
95.00
116,079
113,978
96.00
120,357
118,218
97.00
124,712
122,535
98.00
129,143
126,928
99.00
133,650
131,397
100.00
138,233
135,942
101.00
142,892
140,563
102.00
147,627
145,260
103.00
152,438
150,033
103.10
152,923
15,268
Cumul. Vol. (Cu. FTC
0
10,754
120,567
234,544
352,762
475,297
602,224
733,621
869,562
1,010,125
1,155,385
1,305,417
1,320,685
These volumes were calculated using the vertical average end area method.
TOTAL REQD VOL
578,336
CF
;CUMULATIVE
VOL.
ZONE VOL.
145.33%
END PUMP = = = =
95.09
FT
245,184 CF
TR'MT
245,184
START PUMP = = :
101.44
FT
1,074,039 CF
TEMP
828,855
116.78%
MAX STORAGE =
102.10
FT
1,170,388 CF
STORM
96,349
100.81 %
Smithfield Hog Production Engineering P.O. Box 856, Warsaw, NC 28398 [phone]

Grower: Kilpatrick Farm Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 01/17/22
County: Sampson Sheet 5 of 12
MINIMUM REQUIRED VOLUME CALCULATIONS DIGESTER
Permanent Storage:
Required Treatment Volume:
Animal Type Capacity (cu.ft./hd) = Total
Nursery
0
Wean to Finish
13,336
32.00
426,752
Finishing
0
32.00
0
Farrow
0
i
0
0.67
finish
0
0
0.50
Total Required Treatment Volume (cu. ft.)=
Sludge Storage Volume:
426,752
Animal Type Capacity ALW (cu.ft. Ib) = Total
Nursery
0.25
Wean to Finish
13,336
115
0.00
0
Finishing
0
135
0.00
0
Farrow
D
to
'417
_
Boars
1
0
Total Required Sludge Storage Volume (cu. ft.)=
No Storm Storage Unless a Partial Cover Digester:
Vol.=(Digester Surf. Area + Addt'I Drainage Area) * 25Yr./24Hr. Storm(in) / 12in./ft.
Vol.= (185103 sq.ft + 0 sq.ft.) * 7.5 in. /12 in./ft.
Total Required Volume for 25Yr./24Hr. Storm Event (cu.ft)=
No "Heavy Rain" Storage Unless a Partial Cover Digester:
Vol.=(Digester Surf. Area + Addt'I Drainage Area) * "Heavy Rain" Factor (in) / 12in./ft.
Vol.= (185103 sq.ft + 0 sq.ft.) * 0.0 in. /12 in./ft.
Total Required Volume for "Heavy Rain" (cu.ft.) _
(for Extended Periods of Chronic Rainfall)
0
115,689
Total Required Storm Storage
(100Yr. / 24Hr. Storm +'Heavy Rain')= 115,689 (CU.FT)
Total Required Permanent Storage
(Treatment + Sludge) = 426,752 (CU.FT)
TOTAL REQUIRED DIGESTER VOLUME = 542441 (CU.FT.)
0

Grower: Kilpatrick Farm Storage Pond Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 01/17/22
Countv: Sampson Sheet 6 of 12
Temporary Storage Volume:
Manure Production:
Animal Type Capacity Sto. Period = Total
0
0
0
Wean to Finish
13,336
180
1.17
2,801,360
Finishing
0
180
1.40
0
0
0
1 4.50
Farrow to
0
Total Manure Production (gals.)= 2,801,360
Total Manure Production (cu.ft.)= 374,513
Excess Fresh Water:
Anima ype Capacity to. Period =Total
Nursery
Wean to Finish
13,336
180
0.77
1,840,448
Finishing
0
180
0.90
0
0
Farrow to
0
Farrow finish
0
Total Fresh Water Excess (gals.)= 1,840,448
Total Fresh Water Excess (cu.ft.)= 246,049
Hog Production Engineering
w

Grower: Kilpatrick Farm Storage Pond Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 01/17/22
Countv: Sampson Sheet 7 of 12
Temporary Storage Volume: Cont.)
Rainfall in Excess of Evaporation: Only in Waste Storage Pond since digester is covered
Vol.=(Digester Surface Area + Waste Storage Pond Area + Additional Drainage Area) * Rainfall / 12in./ft
Vol.= (0 sq.ft. + 152923 sq.ft. + 0 sq.ft.) * 7.0 in. /12 in./ft.
Total Required Volume for Rainfall in Excess of Evap. (cu.ft.)= 89,205
Storm Storage: Only in Waste Storage Pond since digester is covered
Vol.=(Digester Surface Area + Waste Storage Pond Area - * 100Yr./24Hr Storm(in.)/12in./ft.
Vol.= (0 sq.ft + 152923 sq.ft. + 0 sq.ft.) * 7.5 in. /12
Total Required Volume for 100Yr./24Hr. Storm Event (cu.ft)= 95,577
"Heavy Rain" Storage: Only in Waste Storage Pond when required since digester is covered
.=(Digester Surface Area + Waste Storage Pond Area + Additional Drainage Area) * Heavy Rain Factor(in) / 12in
Vol.= (0 sq.ft + 152923 sq.ft. + 0 sq.ft.) * 0.0 in. /12 in./ft.
Total Required Volume for "Heavy Rain" (cu.ft.) = 0
(for Extended Periods of Chronic Rainfall)
Additional Water Storage:
No Additional Water Storage is Required
0
Total Required Storm Storage
(100Yr. / 24Hr. Storm +'Heavy Rain')=
Total Required Temporary Storage
(Manure Prod. + Excess Fr. Water + Rainfall Excess + Additional Water Storage)=
Total Required Permanent Storage
(Treatment + Sludge) _
95,577 (CU.FT)
709,768 (CU.FT)
0 (CU.FT)
TOTAL REQUIRED 2nd STAGE VOLUME = 805345 (CU.FT.)
P.O. Box 856, Warsaw NC 28398 (91
0

Grower: Kilpatrick Farm Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 01/17/22
County: Sampson Sheet 8 of 12
DIGESTER DESIGN SUMMARY
Top of Dike Elevation ------------------- 91.40 FT.
Top of 25Yr. / 241-1r. Storm Storage
90.40 FT.
Start Pump Elevation ------------------- 89.75 FT.
End Pump Elevation ------------------- 89.40 FT.
Top of Sludge Storage ------------------- 0.00 Applicable
Seasonal High Watertable Elev.------------------- 0.00
Finished Bottom Elevation ------------------- 81.00 FT.
Inside Top Length ------------------- Not Applicable
Inside Top Width ------------------- Not Applicable
Side Slopes ------------------- 3.0:1 H:V
Lagoon Surface Area ------------------- 185,103 SF
Freeboard Depth
Zone Depths:
TOTAL DESIGN VOLUME = 1289410 (CU.FT.)
Treatment / Sludge Storage Zone Depth -----------
Temporary Storage Zone Depth -----------
Freeboard Depth -----------
Total Digester Depth-----------
Smithfield Hog Production Engineering P.O. Box 856,
1.00 FT.
8.4 FT.
0.3 FT.
1.7 FT.
10.4 FT.

Grower: Kilpatrick Farm Storage Pond Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 01/17/22
County: Sampson Sheet 9 of 12
STORAGE POND DESIGN SUMMARY 2nd S
Top of Dike Elevation -------------------
103.10
FT.
Emergency Spillway Crest Elevation -------------------
Not
Applicable
Top of 100Yr. / 24Hr. Storm Storage -------------------
106.90
FT.
Top of "Heavy Rain" Storage -------------------
Not
Applicable
Start Pump Elevation -------------------
101.44
FT.
End Pump Elevation -------------------
95.09
FT.
Top of Sludge Storage -------------------
Not
Applicable
Seasonal High Watertable Elev.-------------------
0.00
Finished Bottom Elevation -------------------
92.90
FT.
Inside Top Length -------------------
Not
Applicable
Inside Top Width -------------------
Not
Applicable
Side Slopes -------------------
3.0:1
H:V
Lagoon Surface Area -------------------
152,923
SF
Freeboard Depth
Temporary Storage Period
Zone Depths:
TOTAL DESIGN VOLUME = 1170388 (CU.FT.)
Treatment / Sludge Storage Zone Depth
Temporary Storage Zone Depth
Freeboard / Storm Storage Zone Depth
Total Storage Pond Depth
1.00 FT.
180 Days
2.2 FT.
6.3 FT.
1.7 FT.
10.2 FT.
Smithfield Hog Production Engineering P.O. Box 856, Warsaw NC 28398 [phone]

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Grower: Kilpatrick Farm Designed By: BHW
Address: PO Box 856 Checked By: JEO
Warsaw, NC 28398 Date: 01/17/22
County: Sampson Sheet 12 of 12
This Anerobic Digester is designed in accordance with the North Carolina Natural Resources Conservation
Service PRACTICE STANDARD 366- ANEROBIC DIGESTER, revised in September, 2018.
The Waste Storage Pond is designed in accordance with the North Carolina Natural Resources Convservation
Service PRACTICE STANDARD 313- WASTE STORAGE FACILITY, revised in December, 2017.
11 /27/2023
DESIGNED: �v
DATE: 11 /27/2023
COMMENTS: The lagoon has been designed as an irregular shape. Actual contour areas
taken from the lagoon design are used to calculate the surface area and storage volume
characteristics of the lagoon. This approach ensures that rainfall capture on the lagoon is
fully accounted for and that storage volumes calculated represent actual conditions.
Elevations are based on an assumed benchmark and do not represent mean sea level datum.
1 certify, to the best of my professional knowledge, judgement, and belief, this design calculation
is in accordance with the applicable NRCS standards.
Smithfield Hog Production Engineering P.O. Box 856, Warsaw NC 28398 [phone]