310713_Report_20180620 (3)

i
Appendix 1. Lagoon Sludge Survey Form Revised August 2008
`713
Farm Penrdt or DWQ Identification Number Fac 31-al
Lagoon Identification NG3
�,Person(s) Takmg Measurements Nick Edwards
D. Date of Measurement 6/28/2016
E. Methods/Devices Used for Measurement of
a Distance from the lagoon Liquid surface to the top of the sludge layer.
Scaled Pole
b. Distance from the lagoon liquid surface to the bottom (soil) of the lagoon.
Scaled Pole
c Thickness of the sludge layer if making a direct measurement with "core sampler•.
NIA
F. Lagoon Surface Area (using dimensions at inside top of bank): 2.11 (acres)
(Draw a sketch of the lagoon on a separate sheet, fist dimensions, and calculate surface area The lagoon
may have been built different than designed, so measurements should be made.)
G. Estimate number of sampling pouts:
a. Less than 1.33 acres: Use 8 points
(-14-)
b. If more than 1.33 ac. 2.11 acres x 6 = 12-65 , with marmnum of 24.
(Using sketch and dime stars, develop a uniform grid that furs the same number of Uaemetions as the
estimated number of sampling points needed. Number the haersection pouts 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 Sheep (Appendix 2). Also, at the
location 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.
t the time of the survey, also measure the distance, from the Mexmnum liquid Level to The Present Liquid
Level (measure at the lagoon gauge pole):
J. Detemdne the distance from the top of bank to the Maumnum Liquid Level
(use lagoon management plan or other lagoon records)
K Detarrnine the distance from the Maximun Liquid to the Minimum Liquid level
(use lagoon management plan or other lagoon records)
L Calculate the distance from the present Liquid surface level to the Min'umun Liquid Level
ptem K Minus hem 1, assuring the present liquid level is below the Manmnum 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)
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):
O. Record from the Sludge Survey Data Sheet the average [hlcimess of the sludge layer-
P. Calculate the thickness of the existing Liquid Treatment Zone (Item N minus Item L):
Q. If Item O Is greater than Item P, proceed to the Worksheet for Sludge Volume and Treatment Volume.
If Item O is equal to or less than Item P, you do not have to determine volumes.
Completed by.
/-"kl
Me
1.60
zoo
1.40
8.80
522
3.58
3.82
Data: 5/2aM 6

. ,radix 2. Sludge Survey Data Sheet'
5goon Identfication NG3
I 1�
? Jmpleted by.
Y Pant Name
Revised August 2008
signature
Date: _ 52812016
(A)
(8)
(D)
(C)-(8)
Grid Point
Distance from liquid surface
Distance from liquid surface
Thickness of sludge layer
No.
to top of slut a
to lagoon bottom sot
Ft & in.
Ft (tenths)
Ft & tn.
Ft (tenths)
Ft & in.
.Ft tenths
1
5.4
8.8
3.4
2
5.3
-
8.8
3.5
3
5.3
8.8
3.5
4
5.3
8.8
3.5
5
5.1
88
3.7
6
5.1
8.8
3.7
7
5.1
8.8
3.7
8
5.2
8.8
3.6
9
52
8.8
3.6
10
5.3
-
88
3.5
11
5.3
88
3.5
12
52
8.8
3.6
13
5.2
8.8
3.6
14
5.1
8.8
3.7
15
0.0
0.0
00
16
0.0
0.0
0.0
17
0.0
0.0
0.0
18
0.0
0.0
00
19
0.0
0.0
00
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 1
1 0.0
0.0
1
1 0.0
Number of points with readings
14.0
1 X X
14.0
X X
14.0
Average of
X X
5.2
X X
8.8
X X
3.6
points
At Pump
5.4
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

f
r�on dlx 3. Worksheet for sludge vohune and treatment volume Revised August 2008
�+Oe average thickness of the sludge layer and the thickness of the exis ft liquid (sludge -free) treatment zone are determined
f �n the Worme6on on the Lagoon Sludge Survey Form (Items O and P, respectively). In this example, the average sludge
toyer thickness is 25 feet and the existing fpuld 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 aide 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 vckurne In the lagoon can be estimated by using standard equations. For approx'vnate volumes
of rectangular lagoons with constant side slope, calculate length and wk th at the midpoint of the layer, and multiply by layer
thickness to calculate layer volume, as shown In the example. For Imegulor 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.
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 Lm= L-2S(D-(f/2))
7. Width at midpoint of sludge layer W,�= W-2S(D-(T/2))
8. Volume of sludge (Vs) Vs=L,,, W. T
9. Volume in gallons: Vsi=V'7.5 gal./fta.
10 Thickness of existing liquid trot zone (Y)
11. Thickness of total treatment zone (Z) Z= T+Y
12. Length at mhdpoird of total tmt zone Lz= L-2(S)(D-(Zl2)
13. Width at midpoint of total tint Zone W. = W-2(S)(D4M)
14. Volmne of total treatment zone (Vz) Vz = Lz WzZ
15. Rabo ( R ) of sludge layer volume to total Treatment Volume
R = VsNz
Exmple
Your Lagoon
25
it
358
it
11
R
11.00
it
3
2-00
457
ft
650.00
ft.
229
ft.
115.00
ft
398.5
fL
613.16
ft.
170.5
ft
78.16
ft.
169,8W ft' 171.494 If
1,273,950
gal.
1,286,209
gal.
35
ft
3.82
ft
ft 7.40 ft
409
ft
620.80
R
181
R
85.80
it
444.174
ft?
394,158
fe
0.38 0.44
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: tithe 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.
Than. R = (Vs-DSSV) / (Vz - DSSV)
Example: If DSSV = 85,000 ft , then R = (169,860 - 85,000) / (447,174 - 85,000) = 84,860 / 362,174 = 0.24.
16. Design sludge storage volume (DSSV) 1 85,000 0
17. Ratio (R) of sludge layer volume to treatment volume ad/usted
'� for designed sludge storage volume. 0.24 0.44