Seepage Guidance Spreadsheet
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DEQ Seepage Calculation Spreadsheet
Note that each worksheet has instructions and data is to be input in yellow
Three worksheet examples are provided.
Welcome to the DEQ Seepage Calculation Spreadsheet.This spreadsheet is for data input for a lagoon seepage test that
data collected at 3 day intervals or 5 days of data collected at 4 hour inte
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cells.
has either 15 days of
rvals.
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Lagoon Seepage Rate Test for 15 days of data collected at 3 day intervals
Owner/Facility/HOA/Permittee:
Responsible P.E. or P. G. :
Phone Number:
Name of Lagoon:
Test Start Date:
Test Start Time:
Equipment used for lagoon:
Equipment Accuracy: 0 %FS 0 Range (ft)
Equipment used for pan:
Equipment Accuracy: 0 %FS 0 Range (ft)
Definitions: (Refer to guidance for additional information)
Date ES ES Error n
inches inches inches +/- inches inches +/- in days
0
0.000 0.000 0.000 #N/A #N/A 3
0.000 0.000 #N/A #N/A 3
0.000 0.000 #N/A #N/A 30.000 0.000 #N/A #N/A 3
0.000 0.000 #N/A #N/A 3
0.000 #VALUE! 15
Date
in/day +/- in/day +/- in/day
30-Dec 0 #DIV/0!
30-Dec 3 #N/A #N/A #DIV/0!
30-Dec 6 #N/A #N/A #DIV/0!
30-Dec 9 #N/A #N/A #DIV/0!
30-Dec 12 #N/A #N/A #DIV/0!
30-Dec 15 #N/A #N/A #DIV/0!
in/day in/day
Total Day 15 15 #VALUE! #N/A #N/A #N/A
Average 15 #N/A #N/A #DIV/0! #N/A #N/A
ES0
: lagoon surface elevation at start of test for new time increment(units: inches)
ESN
: lagoon surface elevation at day n (units:inches)
ES: lagoon surface elevation change (units:inches)P: see pan coefficient worksheet for table and temperature range
Epan 0:
evap pan surface elevation start of test for new time increment (units:inches)
Epan n:
evap pan surface elevation day n (units:inches)
n: time in days
ES0
ESN
IL
IL Error
Testingtime
TestingDay
Sr1
Sr1
Equipment
Error
Sr1
Sampling
Error
WorstCase
BestCase
ES = Es0-Esn
2
0.000
0.100
0.200
0.3000.400
0.500
0.600
0.700
0.800
0.900
1.000
inc
hes
The leakage rate for lagoons constructed after April 15, 2007 shall be no more (0.125) inches (1/8 inch) per day
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Hook Gauge Reading Hook gauge readings shall be repeated a minimum of seven (7) ti
Date one two three four five six seven average
30-Dec #DIV/0!
30-Dec #DIV/0!30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!
Hook Gauge Reading
Dateone two three four five six seven average
30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!30-Dec #DIV/0!
30-Dec #DIV/0!
Additional Gauge Reading
Dateone two three four five six seven average
30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!
30-Dec #DIV/0!
, . .
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Instructions:
Precipitation Event (C: Correction Factor)
Precipitation events greater that four hours require a correction fa
(See worksheet:Precipitation Event, and column U in this s
0.000 Inches Leave C at 1 if there is no need to correct for an event in a
0.000 Inches
Note that error calculations are based on the Propagati
Equipment Error:
Air Temp. P Evap pan Precipitation Q
F coefficent inches inches inches +/- in inches inches gallons
#N/A 0.000 0.000 0.000 0.000 0
#N/A 0.000 0.000 0.000 0
#N/A 0.000 0.000 0.000 0#N/A 0.000 0.000 0.000 0
#N/A 0.000 0.000 0.000 0
#VALUE! #VALUE! 0.000 0.000 0.000
1. Enter information in all yellow fields.
2. Provide all additional calculations and comments pertaining to testin
3. If you are using a hook guage, enter additional information (see line
4. Precipitation events more than 4 hours duration require additional ca
5. Air Temperature is rounded to nearest degree F.
Sr1: seepage rate (units: inches/day) Sampling Error: the standard error of the sample st
IL: net lagoon evaporation (units:inches)
Air Temperature: median over test interval
Epan 0
Epan n
Epanerror
EffluentQ
Q= ((effluent flow-influent flow (gallons))*ft3*12in) /
R1= (ES-I L-Q+precipitation)/n = inches day
IL=P*(precipitation+E PAN 0-EPAN n)*C
4 6 8 10 12 14 16
Comparison of ES and Evaporation in Pan
ES Evap pan
and for
2 4 6
0.0000
2.0000
4.0000
6.0000
8.0000
10.0000
12.0000
Seep
inche
s
Sampling Error = (standard deviation)/(n1/2)
Equip. Error= (%FS/100* Ran
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es and numerically averaged.
#DIV/0! Stilling Well
#DIV/0!#DIV/0! Note that empty cells are not counted,
#DIV/0! cells with zero are included in
#DIV/0! the average.
#DIV/0!
#DIV/0! Evaporative Pan
#DIV/0!
#DIV/0! Note that empty cells are not counted,
#DIV/0! cells with zero are included in#DIV/0! the average.
#DIV/0!
#DIV/0! Location of Gauge:
#DIV/0!
#DIV/0! Note that empty cells are not counted,
#DIV/0! cells with zero are included in
#DIV/0! the average.
#DIV/0!
samplingerror
samplingerror
samplingerror
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ctor.
heet.)
test time interval.
on of Uncertainty.
Influent Q Lagoon SA
gallons ft2 see note
0 1 1.00
0 1 1.00
0 1 1.000 1 1.00
0 1 1.00
1.00
.
46).
lculations (See Precipitation Worksheet).
ndard deviation
C: precipfactor
(lagoon surface area ft2 *7.48 gal.*ft)
8 10 12 14 16
age (SR1)
ge) *12inches/ft
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Lagoon Seepage Rate Test-for 5 days of testing data collected at 4 hour intervals
Owner/Facility/HOA/Permittee:
Responsible P.E. or P. G. :
Phone Number:
Name of Lagoon:
Test Start Date:
Test Start Time:
Equipment used for lagoon:
Equipment Accuracy: %FS Range (ft)
Equipment used for pan:
Equipment Accuracy: %FS Range (ft)
Equipment used for precipitation: Equipment Accuracy:
Definitions: (Refer to guidance for additional information)
Seepage ES ES Error
inches +/- inches inches inches inches +/- inches inches +/
1 1- Day One Initial Conditions
2 2 #N/A #N/A 0.000 0.000 0.000 #N/A #N3 3 #N/A #N/A 0.000 0.000 #N/A #N
4 4 #N/A #N/A 0.000 0.000 #N/A #N
5 5 #N/A #N/A 0.000 0.000 #N/A #N
6 6 #N/A #N/A 0.000 0.000 #N/A #N
7 7-Day Two #N/A #N/A 0.000 0.000 #N/A #N
8 8 #N/A #N/A 0.000 0.000 #N/A #N
9 9 #N/A #N/A 0.000 0.000 #N/A #N
10 10 #N/A #N/A 0.000 0.000 #N/A #N
11 11 #N/A #N/A 0.000 0.000 #N/A #N
12 12 #N/A #N/A 0.000 0.000 #N/A #N
13 13-Day Three #N/A #N/A 0.000 0.000 #N/A #N
14 14 #N/A #N/A 0.000 0.000 #N/A #N
15 15 #N/A #N/A 0.000 0.000 #N/A #N
16 16 #N/A #N/A 0.000 0.000 #N/A #N
17 17 #N/A #N/A 0.000 0.000 #N/A #N18 18 #N/A #N/A 0.000 0.000 #N/A #N
19 19- Day Four #N/A #N/A 0.000 0.000 #N/A #N
20 20 #N/A #N/A 0.000 0.000 #N/A #N
21 21 #N/A #N/A 0.000 0.000 #N/A #N
22 22 #N/A #N/A 0.000 0.000 #N/A #N
23 23 #N/A #N/A 0.000 0.000 #N/A #N
24 24 #N/A #N/A 0.000 0.000 #N/A #N
25 25-Day Five #N/A #N/A 0.000 0.000 #N/A #N
26 26 #N/A #N/A 0.000 0.000 #N/A #N
27 27 #N/A #N/A 0.000 0.000 #N/A #N
28 28 #N/A #N/A 0.000 0.000 #N/A #N
29 29 #N/A #N/A 0.000 0.000 #N/A #N
30 30 #N/A #N/A 0.000 0.000 #N/A #N
31 31 #N/A #N/A 0.000 0.000 #N/A #N
0.000 #N/A
n: tim
ES0
: lagoon surface elevation at start of test for new time increment(units: inches) Sr1:
ESN
: lagoon surface elevation at day n (units:inches)
ES: lagoon surface elevation change (units:inches)
P: see pan coefficient worksheet for table and temperature range IL: n
Epan 0:
evap pan surface elevation start of test for new time increment (units:inches)
Epan n:
evap pan surface elevation day n (units:inches) Air T
Tests 6 perday every 4
hours
SeepageError E
S0E
SNIL
IL
ES = Es0-Esn
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F P
30 1.0000
31 0.9906
32 0.9812
33 0.971834 0.9624
35 0.9530
36 0.9438
37 0.9346
38 0.9254
39 0.9162
40 0.9070
41 0.8976
42 0.8882
43 0.8788
44 0.8694
45 0.860046 0.8508
47 0.8416
48 0.8324
49 0.8232
50 0.8140 Please note:
51 0.8046 Freezing temperatures result in data which is not compatible with the see
52 0.7952
53 0.7858
54 0.7764
55 0.7670
56 0.7578
57 0.748658 0.7394
59 0.7302
60 0.7210
61 0.7116
62 0.7022
63 0.6928
64 0.6834
65 0.6740
66 0.6648
67 0.6556
68 0.6464
69 0.637270 0.6280
71 0.6186
72 0.6092
73 0.5998
74 0.5904
75 0.5810
76 0.5720
77 0.5630
AirTemperature
PanCoefficient
20 30 40 50 60 70 80 90 100 110 1200.0000
0.2000
0.4000
0.6000
0.8000
1.0000
1.2000
Pan Coefficient P
P
Mean Air Temperature (F)
Pan
Coefficient(P)
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78 0.5540
79 0.5450
80 0.5360
81 0.5264
82 0.5168
83 0.5072
84 0.497685 0.4880
86 0.4786
87 0.4693
88 0.4600
89 0.4507
90 0.4414
91 0.4321
92 0.4228
93 0.4135
94 0.4042
95 0.3949
96 0.385697 0.3763
98 0.3670
99 0.3577
100 0.3484
101 0.3391
102 0.3298
103 0.3205
104 0.3112
105 0.3019
106 0.2926
107 0.2833
108 0.2740109 0.2647
110 0.2554
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page rate calculations
an Coefficient P
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Precipitation Event (C: Correction Factor) CalculatorPrecipitation events greater that four hours in time require a correction factor.
multiple precipitation events (greater than four hours) needed to be added together.
Sum the total hours of the precipitation events, for a test time interval.
Instructions
1. Fill in hours for precipitation event(s) during test time interval.
2. Fill in hours of test interval.
3. Change C in the Seepage test spreadsheet.
4. Enter information about the precipitation events in notes.
hours
C n
hours
#DIV/0!
Notes: 0.00 Sum Total
Notes about precipitation events should be entered here.
Note: For a test interval with multiple precipitation events,
P: pan coefficient from Table see attached worksheet
n: time in hours of the test interval
T: mean air temperature for period
Sum Total ofMultiple
Precipitation Events
precipitation inhours
precip.factor
C = (n - precipitation hours)/ n )
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Lagoon seepage rate calculations to customize for testing data collected at more
Owner/Facility/HOA/Permittee:
Responsible P.E. or P. G. :
Phone Number:
Name of Lagoon:
Test Start Date:
Test Start Time:
Equipment used for lagoon:
Equipment Accuracy: %FS Range (ft)
Equipment used for pan:
Equipment Accuracy: %FS Range (ft)
Equipment used for precipitation: Equipment Acc
Definitions: (Refer to guidance for additional information)
Seepage ES ES Error
inches +/- inches inches inches inches +/- inches
1 1- Day One Initial Conditions
2 2 #N/A #N/A 0.000 0.000 0.000
3 3 #N/A #N/A 0.000 0.0004 4 #N/A #N/A 0.000 0.000
5 5 #N/A #N/A 0.000 0.000
6 6 #N/A #N/A 0.000 0.000
7 7-Day Two #N/A #N/A 0.000 0.000
8 8 #N/A #N/A 0.000 0.000
9 9 #N/A #N/A 0.000 0.000
10 10 #N/A #N/A 0.000 0.000
11 11 #N/A #N/A 0.000 0.000
12 12 #N/A #N/A 0.000 0.000
13 13-Day Three #N/A #N/A 0.000 0.000
14 14 #N/A #N/A 0.000 0.000
15 15 #N/A #N/A 0.000 0.00016 16 #N/A #N/A 0.000 0.000
17 17 #N/A #N/A 0.000 0.000
18 18 #N/A #N/A 0.000 0.000
19 19- Day Four #N/A #N/A 0.000 0.000
20 20 #N/A #N/A 0.000 0.000
21 21 #N/A #N/A 0.000 0.000
22 22 #N/A #N/A 0.000 0.000
ES0
: lagoon surface elevation at start of test for new time increment(units: inches)
ESN
: lagoon surface elevation at day n (units:inches)
ES: lagoon surface elevation change (units:inches)
P: see pan coefficient worksheet for table and temperature range
Epan 0:
evap pan surface elevation start of test for new time increment (units:inches)
Epan n:
evap pan surface elevation day n (units:inches)
Tests 6 perday every 4
hours
SeepageError E
S0E
SN
ES = Es0-Esn
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than 4 hour intervals
Instructions
0.000 Inches
0.000 Inches
racy: 0.010 Inches
Note that e
n Test time Air temp P Epan
inches +/- in days F coefficent inches inches inches
#N/A #N/A #N/A 0.000 0.000
#N/A #N/A #N/A 0.000#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
1. Enter information in
2. See the previous wor
3. The cells are not loc
n: time in daysS
r1: seepage rate (units: inches/day)
IL: net lagoon evaporation (units:inches)
Air Temperature: median over test interval
IL
IL Error
Epan 0
Epan n
SR1= (ES-I L-Q+precipitation)/n = inches day
IL=P*(precipitation+E PAN 0-EPAN n)*C
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#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000#N/A #N/A #N/A 0.000
#N/A #N/A #N/A 0.000
#N/A 0.00 ### #VALUE! 0.000
30 35
The leakage rate for lagoons constructed after April 15, 2007 shall be no more (0.125) inches (1/8 inch)existing lagoons constructed prior to April 15, 2007 shall be no more than (0.25) inches (1/4 inch) per da
0 1 2 2 30.0000
2.0000
4.0000
6.0000
8.0000
10.0000
12.0000
Seepa
inches
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uipment error calculations are based on the Propagation of Uncertainty.
Equipment Error:
Precipitation Q Effluent Q
+/- in inches inches gallons gallons ft2 see note inches/day
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
all fields in yellow.
ksheets for details.
ked in this worksheet and rows may be added to accommodate additional testing intervals.
Sampling Error: the standard error of the sample standard deviation
Epanerror
InfluentQ
LagoonSA
C: precipfactor
Sr1
Q= ((effluent flow-influent flow (gallons))*ft3*12in) / (lagoon surface area ft2 *7.48 gal.*ft)
Sampling Error = (standard deviation)/(n 1/2)
Equip. Error= (%FS/100* Range) *12inches/ft
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0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A0.000 0.00 0.000 0 0 1 1.00 #N/A
0.000 0.00 0.000 0 0 1 1.00 #N/A
0.00 0.000 1 1.00
per day and fory.
3 4 4 5 5 6
e (SR1)
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Lagoon Seepage Rate Test-5 days of data collected every 4 hours
Owner/Facility/HOA/Permittee: A Lagoon Test Scenario: Pond seeps ev
Responsible P.E. or P. G. :
Phone Number:
Name of Lagoon:
Test Start Date:
Test Start Time:
Equipment used for lagoon:
Equipment Accuracy: 0.1 %FS 1 Range (ft)
Equipment used for pan:
Equipment Accuracy: 0.1 %FS 1 Range (ft)
Equipment used for precipitation: Equipment
Definitions: (Refer to guidance for additional information)
Seepage ES ES Error
inches +/- inches inches inches inches +/- inches
1 1- Day One Initial Conditions 4.000
2 2 0.003 0.021 4.000 3.983 0.017 0.017
3 3 0.004 0.020 3.983 3.966 0.017 0.0174 4 0.005 0.020 3.966 3.949 0.017 0.017
5 5 0.002 0.021 3.949 3.932 0.017 0.017
6 6 0.001 0.021 3.932 3.915 0.017 0.017
7 7-Day Two 0.002 0.021 3.915 3.898 0.017 0.017
8 8 0.003 0.021 3.898 3.881 0.017 0.017
9 9 0.004 0.020 3.881 3.864 0.017 0.017
10 10 0.005 0.020 3.864 3.847 0.017 0.017
11 11 0.002 0.021 3.847 3.830 0.017 0.017
12 12 0.001 0.021 3.830 3.813 0.017 0.017
13 13-Day Three 0.002 0.021 3.813 3.796 0.017 0.017
14 14 0.003 0.021 3.796 3.779 0.017 0.017
15 15 0.004 0.020 3.779 3.762 0.017 0.01716 16 0.005 0.020 3.762 3.745 0.017 0.017
17 17 0.002 0.021 3.745 3.728 0.017 0.017
18 18 0.001 0.021 3.728 3.711 0.017 0.017
19 19- Day Four 0.002 0.021 3.711 3.694 0.017 0.017
20 20 0.003 0.021 3.694 3.677 0.017 0.017
21 21 0.004 0.020 3.677 3.660 0.017 0.017
22 22 0.005 0.020 3.660 3.643 0.017 0.017
ES0
: lagoon surface elevation at start of test for new time increment(units: inches)
ESN
: lagoon surface elevation at day n (units:inches)
ES: lagoon surface elevation change (units:inches)
P: see pan coefficient worksheet for table and temperature range
Epan 0:
evap pan surface elevation start of test for new time increment (units:inches)
Epan n:
evap pan surface elevation day n (units:inches)
Tests 6 perday every 4
hours
SeepageError E
S0E
SN
ES = Es0-Esn
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23 23 0.002 0.021 3.643 3.626 0.017 0.017
24 24 0.001 0.021 3.626 3.609 0.017 0.017
25 25-Day Five 0.002 0.021 3.609 3.592 0.017 0.017
26 26 0.003 0.021 3.592 3.575 0.017 0.017
27 27 0.004 0.020 3.575 3.558 0.017 0.017
28 28 0.005 0.020 3.558 3.541 0.017 0.017
29 29 0.002 0.021 3.541 3.524 0.017 0.01730 30 0.001 0.021 3.524 3.507 0.017 0.017
31 31 0.002 0.021 3.507 3.490 0.017 0.017
0.510
Date Best Case
in/day +/- in/day +/- in/day in/day in/day
0.0168 0.0208 0.0036 0.0376 -0.0040 1
0.0168 0.0208 0.0036 0.0376 -0.0040 2
0.0168 0.0208 0.0036 0.0376 -0.0040 30.0168 0.0208 0.0036 0.0376 -0.0040 4
0.0168 0.0208 0.0036 0.0376 -0.0040 5
Total Day 5 0.0133 0.0208 0.0341 -0.0076 5
Average 0.0168 0.0208 0.0015 0.0391 -0.0055 5
Sr1
Sr1
Equipment
Error
Sr1
Sampling
Error
WorstCase
TestingDay
0 5 10 15 20 250.015
0.016
0.017
0.018
0.019
0.020
0.021
Comparison of ES and Evaporation in Pan
ES Epan
inches
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nly, temperature varies
0.012 Inches
0.012 Inches
ccuracy: 0.010 Inches
n Test time Air temp P Epan
inches +/- in days F coefficent inches inches inches
12:00 PM 60 4.000
0.014 0.012 0.17 12:00 PM 60 0.72 4.000 3.980 0.020
0.013 0.011 0.17 4:00 PM 70 0.63 3.980 3.960 0.0200.012 0.010 0.17 8:00 PM 72 0.61 3.960 3.940 0.020
0.015 0.013 0.17 12:00 AM 56 0.76 3.940 3.920 0.020
0.016 0.013 0.17 4:00 AM 54 0.78 3.920 3.900 0.020
0.015 0.013 0.17 8:00 AM 55 0.77 3.900 3.880 0.020
0.014 0.012 0.17 12:00 PM 60 0.72 3.880 3.860 0.020
0.013 0.011 0.17 4:00 PM 70 0.63 3.860 3.840 0.020
0.012 0.010 0.17 8:00 PM 72 0.61 3.840 3.820 0.020
0.015 0.013 0.17 12:00 AM 56 0.76 3.820 3.800 0.020
0.016 0.013 0.17 4:00 AM 54 0.78 3.800 3.780 0.020
0.015 0.013 0.17 8:00 AM 55 0.77 3.780 3.760 0.020
0.014 0.012 0.17 12:00 PM 60 0.72 3.760 3.740 0.020
0.013 0.011 0.17 4:00 PM 70 0.63 3.740 3.720 0.0200.012 0.010 0.17 8:00 PM 72 0.61 3.720 3.700 0.020
0.015 0.013 0.17 12:00 AM 56 0.76 3.700 3.680 0.020
0.016 0.013 0.17 4:00 AM 54 0.78 3.680 3.660 0.020
0.015 0.013 0.17 8:00 AM 55 0.77 3.660 3.640 0.020
0.014 0.012 0.17 12:00 PM 60 0.72 3.640 3.620 0.020
0.013 0.011 0.17 4:00 PM 70 0.63 3.620 3.600 0.020
0.012 0.010 0.17 8:00 PM 72 0.61 3.600 3.580 0.020
n: time in daysS
r1: seepage rate (units: inches/day)
IL: net lagoon evaporation (units:inches)
Air Temperature: median over test interval
IL
IL Error
Epan 0
Epan n
SR1= (ES-I L-Q+precipitation)/n = inches day
IL=P*(precipitation+E PAN 0-EPAN n)*C
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0.015 0.013 0.17 12:00 AM 56 0.76 3.580 3.560 0.020
0.016 0.013 0.17 4:00 AM 54 0.78 3.560 3.540 0.020
0.015 0.013 0.17 8:00 AM 55 0.77 3.540 3.520 0.020
0.014 0.012 0.17 12:00 PM 60 0.72 3.520 3.500 0.020
0.013 0.011 0.17 4:00 PM 70 0.63 3.500 3.480 0.020
0.012 0.010 0.17 8:00 PM 72 0.61 3.480 3.460 0.020
0.015 0.013 0.17 12:00 AM 56 0.76 3.460 3.440 0.0200.016 0.013 0.17 4:00 AM 54 0.78 3.440 3.420 0.020
0.015 0.013 0.17 8:00 AM 55 0.77 3.420 3.400 0.020
0.426 5.00 58 0.739 0.600
30 35
The leakage rate for lagoons constructed after April 15, 2007 shall be no more (0.125) inches (1/8 inch)existing lagoons constructed prior to April 15, 2007 shall be no more than (0.25) inches (1/4 inch) per da
0 1 2 2 30.0000
0.0020
0.0040
0.0060
0.0080
0.0100
0.0120
0.0140
0.0160
0.0180
Seepa
inches
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Note that error calculations are based on the Propagation of Uncertainty.
Equipment Error:
Precipitation Q Effluent Q
+/- in inches inches gallons gallons ft2 inches/day
0.017 0.00 0.000 0 0 1 1.00 0.0155
0.017 0.00 0.000 0 0 1 1.00 0.02660.017 0.00 0.000 0 0 1 1.00 0.0289
0.017 0.00 0.000 0 0 1 1.00 0.0111
0.017 0.00 0.000 0 0 1 1.00 0.0088
0.017 0.00 0.000 0 0 1 1.00 0.0100
0.017 0.00 0.000 0 0 1 1.00 0.0155
0.017 0.00 0.000 0 0 1 1.00 0.0266
0.017 0.00 0.000 0 0 1 1.00 0.0289
0.017 0.00 0.000 0 0 1 1.00 0.0111
0.017 0.00 0.000 0 0 1 1.00 0.0088
0.017 0.00 0.000 0 0 1 1.00 0.0100
0.017 0.00 0.000 0 0 1 1.00 0.0155
0.017 0.00 0.000 0 0 1 1.00 0.02660.017 0.00 0.000 0 0 1 1.00 0.0289
0.017 0.00 0.000 0 0 1 1.00 0.0111
0.017 0.00 0.000 0 0 1 1.00 0.0088
0.017 0.00 0.000 0 0 1 1.00 0.0100
0.017 0.00 0.000 0 0 1 1.00 0.0155
0.017 0.00 0.000 0 0 1 1.00 0.0266
0.017 0.00 0.000 0 0 1 1.00 0.0289
Sampling Error: the standard error of the sample standard deviation
Epanerror
InfluentQ
LagoonSA
C: precipfactor
Sr1
Q= ((effluent flow-influent flow (gallons))*ft3*12in) / (lagoon surface area ft2 *7.48 gal.*ft)
Sampling Error = (standard deviation)/(n 1/2)
Equip. Error= (%FS/100* Range) *12inches/ft
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0.017 0.00 0.000 0 0 1 1.00 0.0111
0.017 0.00 0.000 0 0 1 1.00 0.0088
0.017 0.00 0.000 0 0 1 1.00 0.0100
0.017 0.00 0.000 0 0 1 1.00 0.0155
0.017 0.00 0.000 0 0 1 1.00 0.0266
0.017 0.00 0.000 0 0 1 1.00 0.0289
0.017 0.00 0.000 0 0 1 1.00 0.01110.017 0.00 0.000 0 0 1 1.00 0.0088
0.017 0.00 0.000 0 0 1 1.00 0.0100
0.00 0.000 1 1.00
per day and fory.
3 4 4 5 5 6
e (SR1)
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Lagoon Seepage Rate Test 5 days of data collected every 4 hours
Owner/Facility/HOA/Permittee: Lagoon test where equipment accuracy is
Responsible P.E. or P. G. :
Phone Number:
Name of Lagoon:
Test Start Date:
Test Start Time:
Equipment used for lagoon:
Equipment Accuracy: 0.1 %FS 2 Range (ft)
Equipment used for pan:
Equipment Accuracy: 0.1 %FS 1 Range (ft)
Equipment used for precipitation: Equipment
Definitions: (Refer to guidance for additional information)
Seepage ES ES Error
inches +/- inches inches inches inches +/- inches
1 1- Day One Initial Conditions 8.000
2 2 0.055 0.036 8.000 7.930 0.070 0.034
3 3 0.086 0.036 7.903 7.845 0.058 0.0344 4 0.030 0.035 7.845 7.840 0.005 0.034
5 5 0.017 0.036 7.840 7.822 0.018 0.034
6 6 -0.031 0.036 7.822 7.800 0.022 0.034
7 7-Day Two -0.046 0.036 7.800 7.790 0.010 0.034
8 8 0.108 0.036 7.935 7.800 0.135 0.034
9 9 -0.031 0.036 7.749 7.781 -0.032 0.034
10 10 0.049 0.035 7.781 7.805 -0.024 0.034
11 11 -0.005 0.036 7.876 7.953 -0.077 0.034
12 12 -0.012 0.036 7.953 7.938 0.015 0.034
13 13-Day Three 0.021 0.036 7.938 7.840 0.098 0.034
14 14 0.058 0.036 7.794 7.710 0.084 0.034
15 15 0.028 0.036 7.788 7.770 0.018 0.03416 16 0.011 0.035 7.760 7.754 0.006 0.034
17 17 -0.023 0.036 7.731 7.757 -0.026 0.034
18 18 -0.015 0.036 7.757 7.730 0.027 0.034
19 19- Day Four 0.060 0.036 7.831 7.700 0.131 0.034
20 20 -0.017 0.036 7.652 7.640 0.012 0.034
21 21 -0.030 0.036 7.660 7.700 -0.040 0.034
22 22 0.097 0.035 7.600 7.510 0.090 0.034
ES0
: lagoon surface elevation at start of test for new time increment(units: inches)
ESN
: lagoon surface elevation at day n (units:inches)
ES: lagoon surface elevation change (units:inches)
P: see pan coefficient worksheet for table and temperature range
Epan 0:
evap pan surface elevation start of test for new time increment (units:inches)
Epan n:
evap pan surface elevation day n (units:inches)
Tests 6 perday every 4
hours
SeepageError E
S0E
SN
ES = Es0-Esn
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23 23 0.123 0.036 7.599 7.485 0.114 0.034
24 24 -0.033 0.036 7.549 7.523 0.026 0.034
25 25-Day Five -0.047 0.036 7.532 7.516 0.016 0.034
26 26 -0.050 0.036 7.594 7.596 -0.002 0.034
27 27 0.023 0.036 7.506 7.496 0.010 0.034
28 28 0.109 0.035 7.496 7.400 0.096 0.034
29 29 0.083 0.036 7.472 7.400 0.072 0.03430 30 -0.008 0.036 7.444 7.400 0.044 0.034
31 31 -0.011 0.036 7.46 7.43 0.027 0.034
1.003
Date Best Case
in/day +/- in/day +/- in/day in/day in/day
0.1102 0.0360 0.1231 0.1463 0.0742 1
0.1296 0.0360 0.1244 0.1656 0.0936 2
0.1192 0.0360 0.0865 0.1552 0.0831 30.0937 0.0360 0.1821 0.1297 0.0577 4
0.1472 0.0360 0.1484 0.1832 0.1111 5
Total Day 5 0.1289 0.0360 0.1649 0.0929 5
Average 0.1200 0.0360 0.0568 0.2128 0.0271 5
Sr1
Sr1
Equipment
Error
Sr1
Sampling
Error
WorstCase
TestingDay
0 5 10 15 20 25-0.150
-0.100
-0.050
0.000
0.050
0.100
0.150
Comparison of ES and Evaporation in Pan
ES Epan
inches
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different
0.024 Inches
0.012 Inches
ccuracy: 0.010 Inches
Note that
Equipment
n Test time Air temp P Epan
inches +/- in days F coefficent inches inches inches +/- in
12:00 PM 60 8.000
0.015 0.012 0.17 12:00 PM 60 0.72 8.000 7.979 0.021 0.017
-0.028 0.011 0.17 4:00 PM 70 0.63 7.979 8.023 -0.044 0.017-0.025 0.010 0.17 8:00 PM 72 0.61 8.023 8.064 -0.041 0.017
0.001 0.013 0.17 12:00 AM 56 0.76 8.064 8.063 0.001 0.017
0.053 0.013 0.17 4:00 AM 54 0.78 8.063 7.995 0.068 0.017
0.086 0.013 0.17 8:00 AM 55 0.77 7.995 7.912 0.083 0.017
0.027 0.012 0.17 12:00 PM 60 0.72 7.912 7.875 0.037 0.017
-0.001 0.011 0.17 4:00 PM 70 0.63 7.875 7.876 -0.001 0.017
-0.023 0.010 0.17 8:00 PM 72 0.61 7.876 7.963 -0.087 0.017
-0.072 0.013 0.17 12:00 AM 56 0.76 7.963 8.058 -0.095 0.017
0.027 0.013 0.17 4:00 AM 54 0.78 8.058 8.023 0.035 0.017
0.077 0.013 0.17 8:00 AM 55 0.77 8.023 7.923 0.100 0.017
0.026 0.012 0.17 12:00 PM 60 0.72 7.923 7.887 0.036 0.017
-0.010 0.011 0.17 4:00 PM 70 0.63 7.887 7.903 -0.016 0.017-0.005 0.010 0.17 8:00 PM 72 0.61 7.903 7.912 -0.009 0.017
-0.003 0.013 0.17 12:00 AM 56 0.76 7.912 7.916 -0.004 0.017
0.062 0.013 0.17 4:00 AM 54 0.78 7.916 7.856 0.060 0.017
0.071 0.013 0.17 8:00 AM 55 0.77 7.856 7.763 0.093 0.017
0.029 0.012 0.17 12:00 PM 60 0.72 7.763 7.723 0.040 0.017
-0.010 0.011 0.17 4:00 PM 70 0.63 7.723 7.739 -0.016 0.017
-0.007 0.010 0.17 8:00 PM 72 0.61 7.739 7.751 -0.012 0.017
n: time in daysS
r1: seepage rate (units: inches/day) Sampling E
IL: net lagoon evaporation (units:inches)
Air Temperature: median over test interval
IL
IL Error
Epan 0
Epan n
Epanerror
Q= ((efflu
SR1= (ES-I L-Q+precipitation)/n = inches day
IL=P*(precipitation+EPAN 0-EPAN n)
Sampling
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-0.009 0.013 0.17 12:00 AM 56 0.76 7.751 7.763 -0.012 0.017
0.059 0.013 0.17 4:00 AM 54 0.78 7.763 7.687 0.076 0.017
0.063 0.013 0.17 8:00 AM 55 0.77 7.687 7.605 0.082 0.017
0.048 0.012 0.17 12:00 PM 60 0.72 7.605 7.539 0.066 0.017
-0.013 0.011 0.17 4:00 PM 70 0.63 7.539 7.560 -0.021 0.017
-0.013 0.010 0.17 8:00 PM 72 0.61 7.560 7.581 -0.021 0.017
-0.011 0.013 0.17 12:00 AM 56 0.76 7.581 7.596 -0.015 0.0170.052 0.013 0.17 4:00 AM 54 0.78 7.596 7.529 0.067 0.017
0.038 0.013 0.17 8:00 AM 55 0.77 7.529 7.480 0.049 0.017
0.503 5.00 58 0.739 0.520
30 35
The leakage rate for lagoons constructed after April 15, 2007 shall be no more (0.125) inches (1/8 inch) per dayexisting lagoons constructed prior to April 15, 2007 shall be no more than (0.25) inches (1/4 inch) per day.
0 1 2 2 3 30.0000
0.0200
0.0400
0.0600
0.0800
0.1000
0.1200
0.1400
0.1600
Seepage (SR1
inches
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rror calculations are based on the Propagation of Uncertainty.
Error:
Precipitation Q Effluent Q
inches inches gallons gallons ft2 see note inches/day
0.00 0.000 0 0 1 1.00 0.3292
0.00 0.000 0 0 1 1.00 0.51380.00 0.000 0 0 1 1.00 0.1799
0.00 0.000 0 0 1 1.00 0.1035
0.00 0.000 0 0 1 1.00 -0.1866
0.03 0.000 0 0 1 1.00 -0.2782
0.00 0.000 0 0 1 1.00 0.6499
0.00 0.000 0 0 1 1.00 -0.1882
0.05 0.000 0 0 1 1.00 0.2912
0.00 0.000 0 0 1 1.00 -0.0301
0.00 0.000 0 0 1 1.00 -0.0730
0.00 0.000 0 0 1 1.00 0.1278
0.00 0.000 0 0 1 1.00 0.3483
0.00 0.000 0 0 1 1.00 0.16830.00 0.000 0 0 1 1.00 0.0689
0.00 0.000 0 0 1 1.00 -0.1378
0.02 0.000 0 0 1 1.00 -0.0907
0.00 0.000 0 0 1 1.00 0.3580
0.00 0.000 0 0 1 1.00 -0.1010
0.00 0.000 0 0 1 1.00 -0.1797
0.00 0.000 0 0 1 1.00 0.5839
rror: the standard error of the sample standard deviation
InfluentQ
LagoonSA
C: precipfactor
Sr1
ent flow-influent flow (gallons))*ft3*12in) / (lagoon surface area ft2 *7.48 gal.*ft)
rror = (standard deviation)/(n 1/2)
Equip. Error= (%FS/100* Range) *12inches/ft
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0.00 0.000 0 0 1 1.00 0.7386
0.00 0.000 0 0 1 1.00 -0.1980
0.00 0.000 0 0 1 1.00 -0.2814
0.00 0.000 0 0 1 1.00 -0.2975
0.00 0.000 0 0 1 1.00 0.1391
0.00 0.000 0 0 1 1.00 0.6528
0.00 0.000 0 0 1 1.00 0.50020.00 0.000 0 0 1 1.00 -0.0481
0.00 0.000 0 0 1 1.00 -0.0635
0.10 0.000 1 1.00
and for
4 4 5 5 6
)
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Lagoon Seepage Rate Test for 15 days of data collected at 3 day intervals
Owner/Facility/HOA/Permittee: 15 Day Example Test
Responsible P.E. or P. G. :
Phone Number:
Name of Lagoon:
Test Start Date:
Test Start Time:
Equipment used for lagoon:
Equipment Accuracy: 0.1 %FS 1 Range (ft)
Equipment used for pan:
Equipment Accuracy: 0.1 %FS 1 Range (ft)
Definitions: (Refer to guidance for additional information)
Date ES ES Error n
inches inches inches +/- inches inches +/- in days
4.000 0
1-Jun 4.000 3.480 0.520 0.017 0.135 0.011 3 8
4-Jun 3.480 2.990 0.490 0.017 0.098 0.011 3 8
7-Jun 3.080 2.580 0.500 0.017 0.120 0.011 3 810-Jun 2.580 2.078 0.502 0.017 0.071 0.011 3 8
13-Jun 2.078 1.600 0.478 0.017 0.135 0.011 3 8
2.490 0.558 15
Date
in/day +/- in/day +/- in/day
30-Dec 0 0
1-Jun 3 0.1284 0.0095 0
4-Jun 6 0.1306 0.0094 0
7-Jun 9 0.1268 0.0094 0
10-Jun 12 0.1436 0.0093 0
13-Jun 15 0.1144 0.0095 0
in/day in/day
Total Day 15 15 0.1288 0.0094 0.1382 0.1194
Average 15 0.1288 0.0094 0.0047 0.1428 0.1147
ES0
: lagoon surface elevation at start of test for new time increment(units: inches)
ESN
: lagoon surface elevation at day n (units:inches)
ES: lagoon surface elevation change (units:inches)P: see pan coefficient worksheet for table and temperature range
Epan 0:
evap pan surface elevation start of test for new time increment (units:inches)
Epan n:
evap pan surface elevation day n (units:inches)
n: time in days
ES0
ESN
IL
IL Error
Testingtime
TestingDay
Sr1
Sr1
Equipment
Error
Sr1
Sampling
Error
WorstCase
BestCase
ES = Es0-Esn
2
0.000
0.100
0.200
0.300
0.400
0.500
0.600
inc
hes
The leakage rate for lagoons constructed after April 15, 2007 shall be no more (0.125) inches (1/8 inch) per day
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Hook Gauge Reading Hook gauge readings shall be repeated a minimum of seven (7) ti
Date one two three four five six seven average
30-Dec 4.0000 4.0094 3.9895 4.0053 3.9952 4.0116 3.9934 4.0006
1-Jun 3.4800 3.4855 3.4752 3.4898 3.4729 3.4885 3.4711 3.48044-Jun 2.9900 3.0019 2.9895 2.9966 2.9792 2.9969 2.9780 2.9903
7-Jun 2.5800 2.5820 2.5722 2.5883 2.5717 2.5859 2.5766 2.5795
10-Jun 2.0780 2.0809 2.0690 2.0809 2.0704 2.0879 2.0711 2.0769
13-Jun 1.6000 1.6022 1.5938 1.6086 1.5947 1.6008 1.5975 1.5997
Hook Gauge Reading
Dateone two three four five six seven average
30-Dec 4.0000 4.0088 3.9958 4.0052 3.9929 4.0085 3.9966 4.0011
1-Jun 3.8000 3.8066 3.7901 3.8001 3.7959 3.8069 3.7886 3.7983
4-Jun 3.6500 3.6566 3.6426 3.6547 3.6482 3.6603 3.6445 3.6510
7-Jun 3.8200 3.8259 3.8135 3.8207 3.8153 3.8236 3.8168 3.819410-Jun 3.7100 3.7135 3.7026 3.7210 3.7021 3.7134 3.6999 3.7089
13-Jun 3.8000 3.8008 3.7882 3.8022 3.7917 3.8097 3.7950 3.7982
Additional Gauge Reading
Dateone two three four five six seven average
30-Dec #DIV/0!
1-Jun #DIV/0!
4-Jun #DIV/0!
7-Jun #DIV/0!
10-Jun #DIV/0!
13-Jun #DIV/0!
, . .
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Instructions:
Precipitation Event (C: Correction Factor)
Precipitation events greater that four hours require a correction fa
(See worksheet:Precipitation Event, and column U in this s
0.012 Inches Leave C at 1 if there is no need to correct for an event in a
0.012 Inches 6. An example is on Worksheet:Example Two
Note that equipment error calculations are based on th
Equipment Error:
Air Temp. P Evap pan Precipitation Q
F coefficent inches inches inches +/- in inches inches gallons
4.000
65 0.674 4.000 3.800 0.200 0.017 0.00 0.000 0
67 0.656 3.800 3.650 0.150 0.017 0.00 0.000 0
66 0.665 4.000 3.820 0.180 0.017 0.00 0.000 068 0.646 3.820 3.710 0.110 0.017 0.00 0.000 0
65 0.674 4.000 3.800 0.200 0.017 0.00 0.000 0
66 0.665 0.840 0.000 0.000
1. Enter information in all yellow fields.
2. Provide all additional calculations and comments pertaining to testin
3. If you are using a hook guage, enter additional information (see line
4. Precipitation events more than 4 hours duration require additional ca
5. Air Temperature is rounded to nearest degree F.
Sr1: seepage rate (units: inches/day) Sampling Error: the standard error of the sample st
IL: net lagoon evaporation (units:inches)
Air Temperature: median over test interval
Epan 0
Epan n
Epanerror
EffluentQ
Q= ((effluent flow-influent flow (gallons))*ft3*12in) /
R1= (ES-I L-Q+precipitation)/n = inches day
IL=P*(precipitation+E PAN 0-EPAN n)*C
4 6 8 10 12 14 16
Comparison of ES and Evaporation in Pan
ES Evap pan
and for
2 4 6
0.0000
0.0200
0.0400
0.0600
0.0800
0.1000
0.1200
0.1400
0.1600
Seep
inche
s
Sampling Error = (standard deviation)/(n1/2)
Equip. Error= (%FS/100* Ran
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es and numerically averaged.
0 Stilling Well
00 Note that empty cells are not counted,
0 cells with zero are included in
0 the average.
0
0 Evaporative Pan
0
0 Note that empty cells are not counted,
0 cells with zero are included in0 the average.
0
#DIV/0! Location of Gauge:
#DIV/0!
#DIV/0! Note that empty cells are not counted,
#DIV/0! cells with zero are included in
#DIV/0! the average.
#DIV/0!
samplingerror
samplingerror
samplingerror
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ctor.
heet.)
test time interval.
e Propagation of Uncertainty.
Influent Q Lagoon SA
gallons ft2 see note
0 1 1.00
0 1 1.00
0 1 1.000 1 1.00
0 1 1.00
1 1.00
.
46).
lculations (See Precipitation Worksheet).
ndard deviation
C: precipfactor
(lagoon surface area ft2 *7.48 gal.*ft)
8 10 12 14 16
age (SR1)
ge) *12inches/ft
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