310522_Report_20180328

r BARWICK AG SERVICES, LLC CLINTON, NC 910-385-1000
Appendix 1. Lagoon Sludge Survey Form
A Farm Permit or DWQ Identification Number Lynn Tew Duplin Farm
Lagoon Identification 1 (north side next to woods)
C Person(s) Taking Measurements Curbs Barwick
D. Date of Measurement
E. Methods/Devices Used for Measurement of:
3/28/2018
a. Distance from the lagoon liquid surface to the top of the sludge layer
remote control boat w/ depth sonar
b. Distance from the lagoon liquid surface to the bottom (soil) of the lagoon.
ovc Dioe
c. Thickness of the sludge layer if making a direct measurement with "core sampler"
31- 522.
Lagoon Surface Area (using dimensions at inside top of bank): 0.5 (acres)
(Draw a sketch of the lagoon on a separate sheet, list dimensions, and calculate surface area. The lagoon
may have been built different than designed, so measurements should be made.)
G. Estimate number of sampling points:
a. Less than 1.33 acres: Use 8 points
points measued
b. If more than 1.33 ac. acres x 6 = 8 , with maximum of 24.
(Using sketch and dimensions, develop a uniform grid that has the same number of Intersections as the
estimated number of sampling points needed Number the intersection points on the lagoon grid so that data
recorded at each can be easily matched.)
H. Conduct sludge survey and record data on "Sludge Survey Data Sheet" (Appendix 2). Also; at the
`/ y atlon of the pump Intake, take measurements of distance from liquid surface to top of sludge
-,ayer and record it on the Data Sheet (last row); this must be at least 2.6I L when Irrigating.
I. At the time of the survey, also measure the distance from the Maximum Liquid Level to the Present liquid
Level (measure at the lagoon gauge pole):
0.4
J Determine the distance from the top of bank to the Maximum Liquid Level
1.6
(use lagoon management plan or other lagoon records)
K. Determine the distance from the Maximum Liquid to the Minimum Liquid level:
2.0
(use lagoon management plan or other lagoon records)
L. Calculate the distance from the present liquid surface level to the Minimum Liquid Level
1.6
(Item K Minus Item I, assuming the present liquid level Is below the Maximum Liquid Level)
M. Record from the Sludge Survey Data Sheet the distance from the present liquid surface level to the
lagoon bottom (average for all the measurement points)
12.4
N. Record from the Sludge Survey Data Sheet the distance from the present liquid surface level to the top
of the sludge layer (average for all the measurement points):
49
O. Record from the Sludge Survey Data Sheet the average thickness of the sludge layer:
7.5
P. Calculate the thickness of the existing Liquid Treatment Zone (Item N minus Item L):
33
tf Item O Is greater than Item P, proceed to the Worksheet for Sludge Volume and Treatment Volume.
._.tem O Is equal to or less than Item P, you do not have to determine volumes.
at pump Intake
Completed by: Curtis Barwick Date:
3/28/2018
Print Name /Signature

Appendix 2 Sludge Survey Data Sheet` Revised August 2008
' '3goon
Completed by:
Print Name
Signature
Date:
(A)
(B)
(C)
(C) (B)
Grid Point
Distance from liquid surface
Distance
from liquid
surface
Thickness of sludge layer
No.
to top of slud a
to lagoon
bottom
(soil)
Ft. & In.
Ft.
(tenths)
Ft.
& in.
Ft. tenths
Ft.
& in.
Ft. tenths
1
2 4
2.3
12
6
125
102
2
1 5
1.4
12
6
12.5
11.1
3
4 4
4.3
12
4
12.3
8.0
4
2 0
2.0
11
9
11.8
9.8
5
11 3
11.3
12
4
123
1.1
6
11 0
11.0
12
4
12.3
13
7
4 4
4.3
12
8
12.7
8.3
8
2 2
2.2
12
8
12.7
105
9
0.0
0.0
0.0
10
00
0.0
0.0
11
0.0
0.0
0.0
' 12
0.0
0.0
0.0
13
0.0
0.0
00
14
0.0
0.0
0.0
15
0.0
0.0
0.0
16
0.0
0.0
0.0
17
0.0
00
0.0
18
0.0
0.0
0.0
19
0.0
0.0
0.0
20
0.0
0.0
0.0
21
0.0
0.0
0.0
22
0.0
0.0
0.0
23
0.0
00
00
24
0.0
0.0
0.0
Number of
olnts with readings
8.0
X
X
80
X
X
8.0
Average of
poInts
X X
4.8541667
X
X
12.385417
X
X
7.53125
At pump
0.0
X
X
X
X
X
X
intake
`All Grid Points and corresponding sludge layer thicknesses must be shown on a sketch attached to this
Sludge Survey Data Sheet
( 1

Appendix 3. Worksheet for sludge volume and treatment volume
Revised August 2008
The average thickness of the sludge layer and the thickness of the existing liquid (sludge -free) treatment zone are determined
from the Information on the Lagoon Sludge Survey Form ( Items 0 and P, respectively). to this example, the average sludge
yer thickness is 2.5 feet and the existing liquid treatment zone is 3.5 feet If the lagoon has a designed sludge storage volume,
see notes at end of the worksheet. The dimensions of the lagoon as measured and the side slope are needed
for calculations of sludge volume and of total treatment volume. If the lagoon is a standard geometnc shape, the sludge
volume and the treatment volume In the lagoon can be estimated by using standard equations. For approximate volumes
of rectangular lagoons with constant side slope, calculate length and width at the midpoint of the layer, and mulLply by layer
thickness to calculate layer volume, as shown in the example. For Irregular shapes, convert the total surface area to a square
or rectangular shape. For exact volumes for lagoons with constant side slope, the "Prismoidal Equations" may be used
0
Example
Your Lagoon
1. Average sludge Layer Thickness (T)
2.5
ft.
7.5
ft.
2. Depth of the lagoon from top of bank to bottom soil surface (D)
11
ft.
14.4
ft.
3. Slope = Horizontal/ vertical side slope (S)
3
2.0
4. Length at the top of inside bank (L)
457
ft.
232.0
ft.
5. Width at top Inside slope (W)
229
ft.
98.0
ft.
6. Length at midpoint of sludge layer Lm = L-2S(D-(T/2))
398.5
ft.
189.4
ft.
7. Width at midpoint of sludge layer Wm W-2S(D-(T/2))
170.5
ft.
55.4
ft
8. Volume of sludge (Vs) Vs=Lm Wm T
169,860
ft'
78,696
ft'
9. Volume In gallons: Vse V'7 5 gal./ft'.
1,273,950
gal
590,218
gal
10. Thickness of existing liquid tmL zone (Y)
3 5
ft
3.3
ft
11. Thickness of total treatment zone (Z) Z= T+Y
6
ft
10.8
ft
12. Length at midpoint of total tmL zone L, = L-2(S)(D-(Z/2)
409
ft.
1960
ft.
13 Width at midpoint of total tmt. Zone W, = W-2(S)(D-(Z/2)
181
ft.
62.0
ft.
14. Volume of total treatment zone (Vz) Vz = L, W,Z 444,174 ft' 131,242 ft'
15. Ratio ( R ) of sludge layer volume to total Treatment Volume
R = VsNz 0.38 0.60
If the ratio R exceeds 0.50, than a sludge Plan of Action may be required. Check with DWQ for information
on filing the Plan of Action.
Note: If the lagoon has a designed sludge storage volume (DSSV), subtract that volume from both the volume
of sludge (Vs) (Item 8) and from the volume of total treatment zone (Vz) (Item 14), and take the ratio.
Then, R = (Vs-DSSV) / (Vz - DSSV)
Example: If DSSV = 85,000 ft', then R = (169.860 - 85,000) / (447.174 - 85,000) = 84,860 1362,174 = 0.24.
16 Design sludge storage volume (DSSV) 85,000
17. Ratio (R) of sludge layer volume to treatment volume adjusted
for designed sludge storage volume 024
Wr

BARWICK AG SERVICES, LLC CLINTON, NC 910-385-1000
Appendix 1. Lagoon Sludge Survey Form
A Farm Permit or DWQ Identification Number Lynn Tew Duplin Farm
11-1
' !Lagoon Identification 2 (north side newer)
C Person(s) Taking Measurements Curtis Barwick
D. Date of Measurement 3/2812018
E. Methods/Devices Used for Measurement of:
a. Distance from the lagoon liquid surface to the top of the sludge layer
remote control boat w/ depth sonar
b. Distance from the lagoon liquid surface to the bottom (soil) of the lagoon.
pvc pipe
c Thickness of the sludge layer if making a direct measurement with 'core sampler'
F. Lagoon Surface Area (using dimensions at Inside top of bank): 0 75 (acres)
(Draw a sketch of the lagoon on a separate sheet, list dimensions, and calculate surface area The lagoon
may have been built different than designed, so measurements should be made.)
G. Estimate number of sampling points -
a. Less than 1.33 acres: Use 8 points
b. If more than 1 33 ac.
points measued
acres x 6 = 8 , with maximum of 24.
(Using sketch and dimensions, develop a uniform grid that has the same number of intersections as the
estimated number of sampling points needed Number the intersection points on the lagoon gnd so that data
recorded at each can be easily matched.)
//H. Conduct sludge survey and record data on "Sludge Survey Data Sheet" (Appendix 2). Also, at the
r
J:ation of the pump Intake, take measurements of distance from liquid surface to top of sludge
layer and record It on the Data Sheet (last row); this must be at least 2.5 ft, when irrigating.
I At the time of the survey, also measure the distance from the Maximum Liquid Level to the Present Liquid
Level (measure at the lagoon gauge pole):
0.9
J. Determine the distance from the top of bank to the Maximum Liquid Level
2.4
(use lagoon management plan or other lagoon records)
K. Determine the distance from the Maximum Liquid to the Minimum Liquid level:
20
(use lagoon management plan or other lagoon records)
L. Calculate the distance from the present liquid surface level to the Minimum Liquid Level
1.1
(Item K Minus Item I, assuming the present liquid level is below the Maximum Liquid Level)
M. Record from the Sludge Survey Data Sheet the distance from the present liquid surface level to the
lagoon bottom (average for all the measurement points)
8.2
N. Record from the Sludge Survey Data Sheet the distance from the present liquid surface level to the top
of the sludge layer (average for all the measurement points):
55
O. Record from the Sludge Survey Data Sheet the average thickness of the sludge layer
2.7
P Calculate the thickness of the existing Liquid Treatment Zone (Item N minus Item L):
4.4
I ? Item O Is greater than Item P, proceed to the Worksheet for Sludge Volume and Treatment Volume.
witem O Is equal to or less than Item P, you do not have to determine volumes.
at pump Intake
Completed by: Curtis Barwick Date:
3/28/2018
Print Name /Signature

Appendix 2. Sludge Survey Data Sheet* Revised August 20D8
/-'-goon
Completed by.
Pnnt Name
Signature
Date.
(A)
(B)
(C)
(C)-(B)
Gnd Point
Distance from liquid surface
Distance
from liquid
surface
Thickness of sludge layer
No.
to top of slud a
to lagoon bottom
soil)
Ft. & in
Ft
tenths
Ft.
& In.
Ft. (tenths)
Ft.
& in.
Ft. tenths
1
4 11
49
7
10
7.8
2.9
2
5 1
5.1
7
10
7.8
2.8
3
5 1
5.1
8
1
8.1
3.0
4
5 1
5.1
8
1
8.1
3.0 -
5
5 4
53
7
11
7.9
2.6
6
5 6
5.5
8
2
8.2
2.7
7
5 7
5.6
8
2
8.2
2.6
8
7 1
7.1
9
8
97
2.6
9
00
00
0.0
10
0.0
0.0
0.0
11
0.0
0.0
0.0
12
00
00
0.0
13
00
0.0
0.0
14
0.0
0.0
0.0
15
0.0
0.0
0.0
16
0.0
0.0
0.0
17
0.0
0.0
0.0
18
00
0.0
0.0
19
0.0
0.0
0.0
20
0.0
0.0
0.0
21
0.0
0.0
0.0
22
0.0
0.0
0.0
23
0.0
0.0
0.0
24
0.0
00
0.0
Number of points with readings
8.0
X
X
8.0
X
X
80
Average of
olnts
X X
5.4583333
X
X
8.21875
X
X
2.760416667
At pump
intake
0.0
X
X
X
X
X
X
'All Grid Points and corresponding sludge layer thicknesses must be shown on a sketch attached to this
Sludge Survey Data Sheet.
f �

Appendix 3. Worksheet for sludge volume and treatment volume
Revised August2008
The average thickness of the sludge layer and the thickness of the existing liquid (sludge -free) treatment zone are determined
_from the information on the Lagoon Sludge Survey Form ( Items 0 and P, respectively). In this example, the average sludge
( yer thickness is 2.5 feet and the existing liquid treatment zone is 3.5 feet. If the lagoon has a designed sludge storage volume,
see notes at end of the worksheet. The dimensions of the lagoon as measured and the side slope are needed
for calculations of sludge volume and of total treatment volume. If the lagoon is a standard geometric shape, the sludge
volume and the treatment volume In the lagoon can be estimated by using standard equations For approximate volumes
of rectangular lagoons with constant side slope, calculate length and width at the midpoint of the layer, and multiply by layer
thickness to calculate layer volume, as shown in the example. For irregular shapes, convert the total surface area to a square
or rectangular shape For exact volumes for lagoons with constant side slope, the "Prismoidal Equations" may be used
0
1 Average sludge Layer Thickness m
2. Depth of the lagoon from top of bank to bottom soil surface (D)
3. Slope = Horizontal/ vertical side slope (S)
4 Length at the top of inside bank (L)
5. Width at top inside slope (W)
6. Length at midpoint of sludge layer L,,,= L-2S(D-(T/2))
7. Width at midpoint of sludge layer Wm W-2S(D-(T/2))
8. Volume of sludge (Vs) Vs=L,,, W, T
9. Volume in gallons: Vsa V'7.5 gal./ft'.
10. Thickness of existing liquid tmt. zone (Y)
11. Thickness of total treatment zone (Z) Z= T+Y
12. Length at midpoint of total tmt. zone L, = L-2(8)(D-(Z/2)
13. Width at midpoint of total tmt. Zone W, = W-2(S)(D-(Z/2)
14. Volume of total treatment zone (Vz) Vz = L, W,Z
15. Ratio ( R ) of sludge layer volume to total Treatment Volume
R = VsNz
Example
Your Lagoon
2 5
ft.
2.7
ft.
11
ft.
11.5
ft.
3
3.0
457
ft.
179.5
ft.
229
ft.
179.5
ft.
398.5
ft.
118.6
ft.
170.5
ft.
118.6
ft.
169,860
ft3
37,978
ft'
1,273,950
gal.
284,836
ge
3.5
ft
44
ft
6
ft
7.1
ft
409
ft.
131 8
ft
181
ft.
131.8
ft.
444,174
ft'
123,336
113
0.38
0.31
If the ratio R exceeds 0.50, than a sludge Plan of Action may be required. Check with DWQ for Information
on filing the Plan of Action.
Note: If the lagoon has a designed sludge storage volume (DSSV), subtract that volume from both the volume
of sludge (Vs) (Item 8) and from the volume of total treatment zone (Vz) (Item 14), and take the ratio.
Then, R = (Vs-DSSV) / (Vz - DSSV)
Example* If DSSV = 85,000113, then R = (169.860 - 85.000) / (447,174 - 85,000) = 84,860 / 362,174 = 0.24.
16. Design sludge storage volume (DSSV)
17 Ratio (R) of sludge layer volume to treatment volume adjusted
for designed sludge storage volume
85.000
0.24 0.31

BARWICK AG SERVICES, LLC CLINTON, NC 910-385-1000
Appendix 1. Lagoon Sludge Survey Form
A. Farm Permit or DWO Identification Number Lynn Tew Duplin Farm
Lagoon Identification 3 (south side of highway)
C Person(s) Taking Measurements Curtis Barwick
D. Date of Measurement 3/28/2018
E. Methods/Devices Used for Measurement of.
a. Distance from the lagoon liquid surface to the top of the sludge layer
remote control boat w/ depth sonar
b. Distance from the lagoon liquid surface to the bottom (solo of the lagoon.
DVC DIDe
c Thickness of the sludge layer If making a direct measurement with "core sampler"
F. Lagoon Surface Area (using dimensions at Inside top of bank). 0.88 (acres)
(Draw a sketch of the lagoon on a separate sheet, list dimensions, and calculate surface area. The lagoon
may have been built different than designed, so measurements should be made.)
G. Estimate number of sampling points,
a. Less than 1.33 acres: Use 8 points
b. If more than 1.33 ac.
points measued
acres x 6 = 8 , with maximum of 24.
(Using sketch and dimensions, develop a uniform grid that has the same number of intersections as the
estimated number of sampling points needed. Number the intersection points on the lagoon gnd so that data
recorded at each can be easily matched ) '
N Conduct sludge survey and record data on "Sludge Survey Data Sheet" (Appendix 2). Also, at the
It— ;cation of the pump Intake, take measurements of distance from liquid surface to top of sludge
layer and record it on the Data Sheet (last row); this must be at least 2.5 fL when irrigating.
I. At the time of the survey, also measure the distance from the Maximum Liquid Level to the Present Liquid
Level (measure at the lagoon gauge pole): 0.0
J. Determine the distance from the top of bank to the Maximum Liquid Level 1.6
(use lagoon management plan or other lagoon records)
K Determine the distance from the Maximum Liquid to the Minimum Liquid level: 2.0
(use lagoon management plan or other lagoon records)
L Calculate the distance from the present liquid surface level to the Minimum Liquid Level 2.0
(Item K Minus Item I, assuming the present liquid level is below the Maximum Liquid Level)
M Record from the Sludge Survey Data Sheet the distance from the present liquid surface level to the
lagoon bottom (average for all the measurement points) 8.8
N. Record from the Sludge Survey Data Sheet the distance from the present liquid surface level to the top
of the sludge layer (average for all the measurement points): 4.1
0. Record from the Sludge Survey Data Sheet the average thickness of the sludge layer. 4.7
P Calculate the thickness of the existing Liquid Treatment Zone (Item N minus Item L): 2.1
t ,If Item O is greater than Item P, proceed to the Worksheet for Sludge Volume and Treatment Volume.
„-Item O is equal to or less than Item P, you do not have to determine volumes.
at pump intake
Completed by. Curtis Barwick Date: 3/28/2018
Print Name /Signature

Appendix 2. Sludge Survey Data Sheet' Revised August 2008
Completed by
Print Name
Signature
Date,
(A)
(B)
(C)
(C)-(B)
Grid Point
Distance from liquid surface
Distance from liquid surface
Thickness of sludge layer
No
to top of slud a
to lagoon bottom solo
Ft. & in.
Ft. tenths
Ft. & in.
Ft. tenths
Ft. & In.
Ft. tenths
1
2 10
2.8
8 8
8.7
5.8
2
3 0
30
8 10
8.8
5.8
3
4 7
4.6
9 0
9.0
4.4
4
4 6
4.5
9 10
9.8
5.3
5
4 1
4.1
9 0
b.0
4.9
6
6 8
6.7
9 0
9.0
2.3
7
4 4
4.3
8 6
8.5
4.2
8
3 0
3.0
8 0
80
5.0
9
0.0
0.0
00
10
0.0
0.0
0.0
11
0.0
0.0
00
12
0.0
0.0
0.0
r) 13
0.0
0.0
0.0
14
0.0
0.0
0.0
15
0.0
0.0
0.0
16
0.0
0.0
0.0
17
0.0
0.0
0.0
18
0.0
0.0
0.0
19
0.0
0.0
0.0
20
0.0
0.0
0.0
21
00
0.0
0.0
22
0.0
0.0
0.0
23
0.0
00
0.0
24
0.0
0.0
0.0
Number of points with readings
8.0
X X
8.0
X X
8.0
Average of
points
X X
4.125
X X
8.8541667
X X
4.729186687
At pump
Intake
00
X X X X X X
'All Grid Points and corresponding sludge layer thicknesses must be shown on a sketch attached to this
Sludge Survey Data Sheet.
r �

Appendix 3. Worksheet for sludge volume and treatment volume
Revised August 2008
The average thickness of the sludge layer and the thickness of the existing liquid (sludge -free) treatment zone are determined
from the information on the Lagoon Sludge Survey Form ( Items 0 and P, respectively) In this example, the average sludge
(' dyer thickness Is 2.5 feet and the existing liquid treatment zone is 3.5 feet. If the lagoon has a designed sludge storage volume,
.,ee notes at end of the worksheet The dimensions of the lagoon as measured and the side slope are needed
for calculations of sludge volume and of total treatment volume. If the lagoon is a standard geometric shape, the sludge
volume and the treatment volume in the lagoon can be estimated by using standard equations. For approximate volumes
of rectangular lagoons with constant side slope, calculate length and width at the midpoint of the layer, and multiply by layer
thickness to calculate layer volume, as shown in the example. For Irregular shapes, convert the total surface area to a square
or rectangular shape For exact volumes for lagoons with constant side slope, the "Prismoldal Equations" may be used.
1 Average sludge Layer Thickness (T)
2. Depth of the lagoon from top of bank to bottom soil surface (D)
3. Slope = Horizontal/ vertical side slope (S)
4. Length at the top of Inside bank (L)
5. Width at top Inside slope (W)
6 Length at midpoint of sludge layer L, = L-2S(D-(T/2))
7. Width at midpoint of sludge layer Wm W-2S(D-(T/2))
B. Volume of sludge (Vs) Vs=L, Wm T
9. Volume In gallons: Vso V•7.5 gal /ft3
10. Thickness of existing liquid tmt. zone (Y)
11. Thickness of total treatment zone (Z) Z= T+Y
12. Length at midpoint of total tmt. zone L,= L-2(S)(D-(Z/2)
13. Width at midpoint of total tmt. Zone W, = W-2(S)(D-(Z/2)
14. Volume of total treatment zone (Vz) Vz = L, W, Z
15. Ratio ( R ) of sludge layer volume to total Treatment Volume
R = VsNz
Example
Your Lagoon
2.5
ft.
4 7
ft.
11
ft.
10.4
ft.
3
3.0
457
ft.
216.0
ft.
229
ft
177.0
ft,
398.5
ft.
167.7
ft.
170.5
ft.
128.7
ft.
169,860
ft'
101,440
ft3
1,273,950
gal.
760,800
gal.
3.5
ft
2.1
ft
6
ft
6.8
ft
409
ft
174.0
ft.
181
f.
135.0
ft.
444,174 ft3
038
159,732 ft'
M f
If the ratio R exceeds 0.50, than a sludge Plan of Action may be required. Check with DWQ for Information
on filing the Plan of Action.
Note, If the lagoon has a designed sludge storage volume (DSSV), subtract that volume from both the volume
of sludge (Vs) (Item 8) and from the volume of total treatment zone (Vz) (Item 14), and take the ratio.
Then, R = (Vs-DSSV) / (Vz - DSSV)
Example: If DSSV = 85,000 ft3, then R = (169,660 - 85,000) / (447,174 - 85,000) = 84,860 / 362,174 = 0.24
16. Design sludge storage volume (DSSV) 85,000
17. Ratio (R) of sludge layer volume to treatment volume adjusted
for designed sludge storage volume 0.24 0.64

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