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Large-Scale Slope Erosion Testing
(ASTM D 6459)
of
ANTI-WASH / GEOJUTE
over
Sandy Loam
April 2011
Submitted to:
AASHTO/NTPEP
444 North Capitol Street, NW, Suite 249
Washington, D.C. 20001
Attn: Evan Rothblatt, NTPEP
Submitted by:
TRI/Environmental, Inc.
9063 Bee Caves Road
Austin, TX 78733
C. Joel Sprague
Project Manager
April 29, 2011
Mr. Evan Rothblatt AASHTO/NTPEP
444 North Capitol Street, NW, Suite 249
Washington, D.C. 20001
E-mail: [email protected]
Subject: Large-scale Slope Testing over Sandy Loam of ANTI-WASH / GEOJUTE, manufactured
for Belton Industries.
Dear Mr. Rothblatt:
This letter report presents the results for large-scale slope erosion tests performed on ANTI-WASH /
GEOJUTE, rolled erosion control product (RECP), over sandy loam. Included are data developed
for target rainfall intensities from 2 to 6 in/hr (5 to 15 cm/hr). All testing work was performed in
general accordance with the ASTM D 6459, Standard Test Method for Determination of Rolled
Erosion Control Product (RECP) Performance in Protecting Hillslopes from Rainfall-Induced
Erosion. Generated results were used to develop the following general cover factor (C-Factor) for
the tested material:
C-Factor ANTI-WASH / GEOJUTE & 1.5 staples/sy = 0.084 for cumulative R-Factor < 231;
Eqn: C = - 0.0000007533R2 + 0.0005375687R
TRI is pleased to present this final report. Please feel free to call if we can answer any questions or
provide any additional information.
Sincerely,
C. Joel Sprague, P.E.
Senior Engineer
Geosynthetics Services Division
Cc: Sam Allen, Jarrett Nelson - TRI
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
2
SLOPE TESTING REPORT
ANTI-WASH / GEOJUTE Single Net Excelsior Blanket, over Sandy Loam
TESTING EQUIPMENT AND PROCEDURES
Overview of Test and Apparatus
TRI/Environmental, Inc.'s (TRI's) large-scale slope erosion testing facility is located at the Denver
Downs Research Farm in Anderson, SC. Testing oversight is provided by C. Joel Sprague, P.E. The
large-scale testing reported herein was performed in accordance with ASTM D 6459, on 3:1 slopes
using loamy soil test plots measuring 40 ft long x 8 ft wide. The simulated rainfall was produced by
ten “rain trees” arranged around the perimeter of each test slope. Each rain tree has four sprinkler
heads atop a 15 ft riser pipe. The rainfall system has been calibrated prior to testing to determine the
number of sprinkler heads and associated pressure settings necessary to achieve target rainfall
intensities and drop sizes. The target rainfall intensities are 2, 4, and 6 in/hr and are applied in
sequence for 20 minutes each. Three replicate test slopes covered by the same rolled erosion control
product (RECP) submitted were tested. The erosion resistance provided by the product tested is
obtained by comparing the protected slope results to control (bare soil) results. Tables and graphs of
rainfall versus soil loss are generated from the accumulated data.
Rolled Erosion Control Product (RECP)
The following information and index properties were determined from the supplied products.
Table 1. Tested Product Information & Index Properties
Product Information and Index Property / Test Units Sampled Product
Product Identification - ANTI-WASH / GEOJUTE
(Style 1248)
Manufacturer - for Belton Industries
Manufacturing Plant Location - North 24 Paragnas,
Jagatdal,
West Bengal, India
Lot number of sample - AW0216610, AW0216659,
AW0216708,
Fiber - Jute
Netting Openings in ¾ in x ¾ in (approx)
Stitching Spacing in Not applicable
Tensile Strength MD x XD (ASTM D 6818) lb/in 91.6 x 76.5
Tensile Elongation MD x XD (ASTM D 6818) % 14.4 x 20.4
Thickness (ASTM D 6525) mils 187
Light Penetration (ASTM D 6567) % cover 55.1
Water Absorption (ASTM D 1117 & ECTC-TASC 00197) % Wt Change 425
Mass / Unit Area (ASTM D 6475) oz/sy 11.94
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
3
Test Soil
The test soil used in the test plots had the following characteristics.
Table 2. TRI-Loam Characteristics
Soil Characteristic Test Method Value
% Gravel
ASTM D 422
0
% Sand 45
% Silt 35
% Clay 20
Liquid Limit, % ASTM D 4318
41
Plasticity Index, % 8
Soil Classification USDA Sandy Loam
Soil Classification USCS Sandy silty clay (ML-CL)
Preparation of the Test Slopes
The test slopes undergo a “standard” preparation procedure prior to each slope test. First, any rills or
depressions resulting from previous testing are filled in with test soil and subject to heavy
compaction. The entire test plot is then tilled to a depth not less than four inches. The test slope is
then raked to create a slope that is smooth both side-to-side and top-to-bottom. Finally, a steel drum
roller is rolled down-and-up the slope 3 times proceeding from one side of the plot to the other. The
submitted erosion control product is then installed as directed by the client.
Installation of Erosion Control Product on Test Slopes
As noted, the submitted erosion control product was installed as directed by the client. For the tests
reported herein, the RECP was anchored with 1.5 staples per square yard.
Specific Test Procedure
Immediately prior to testing, rain gauges are placed at the quarter points (i.e. 10, 20, 30 ft) on the
slope. The slope is then exposed to sequential 20-minute rainfalls having target intensities of 2, 4,
and 6 inches per hour. All runoff is collected during the testing. Additionally, periodic sediment
concentration grab samples are taken and runoff rate measurements are made. Between rainfall
intensities, the rainfall is stopped and rainfall depth is read in the three rain gauges, valves are
adjusted to facilitate the subsequent rainfall intensity, and empty collection vessels are positioned to
collect subsequent runoff.
After allowing for sediments to settle, water is decanted from the collected runoff. The remaining
solids are used to determine “bulk” soil loss. Bulk soil loss is measured by drying all collected
sediments.
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
4
Figure 1. Rainfall Testing Facility
(set up for a control run)
Figure 2. Typical Sampling
Figure 3. Typical Control Result
Pictures of slopes prepared for testing are shown in Figure 4.
Figure 4. Typical Prepared Soil Slope & RECP Installation
Pictures of the eroded slopes are shown in Figures 5 thru 7.
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
5
Figure 5a. Test Slope #1 –
Start of the 2 in/hr Event
Figure 5b. Test Slope #1 –
End of the 4 in/hr Event
Figure 5c. Test Slope #1 –
End of 6 in/hr Event
Figure 5d. Test Slope #1 –
After 6 in/hr Event - RECP Removed
Figure 6a. Test Slope #2 –
Start of the 2 in/hr Event
Figure 6b. Test Slope #2 –
Near End of the 4 in/hr Event
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
6
Figure 6c. Test Slope #2 –
End of the 6 in/hr Event
Figure 6d. Test Slope #2 –
After 6 in/hr Event - RECP Removed
Figure 7a. Test Slope #3 –
Start of 2 in/hr Event
Figure 7b. Test Slope #3 –
End of the 4 in/hr Event
Figure 7c. Test Slope #3 –
End of 6 in/hr Event
Figure 7d. Test Slope #3 –
After 6 in/hr Event – RECP Removed
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
7
TEST RESULTS
The Cover Management (C) Factor from the Revised Universal Soil Loss Equation (RUSLE) of the
USDA-ARS Agricultural handbook 703 is the reported performance measure for slopes determined
from this testing. The C-Factor and R-Factor reported herein are related through RUSLE by the
following relationship:
A = R x K x LS x C x P
where: A = the computed soil loss in tons per acre (measured/calculated from test);
R = the rainfall erosion index (measured/calculated from test);
K = the erodibility of the soil (calculated from test – see Figure 9);
LS = the topographic factor (2.78 for 8 x 40 ft slope);
C = the cover factor = ratio of protect soil loss to control soil loss (1.0 for control); and
P = the practice factor (1.0 for all test slopes).
Total soil loss and the associated rainfall depth measured during the testing are the principle data
used to determine the C Factor. The cumulative C-Factors shown in Table 3 are the ratio of the soil
loss from the protected condition at a calculated cumulative R-Factor divided by the cumulative soil
loss from the control plot (Figure 9) at that same R-Factor.
In all cases, the soil loss and associated rainfall data for both protected and control conditions are
used to develop a normalized cumulative graph of R-Factor versus C-Factor (R factor = total kinetic
energy of the storm (E) times its maximum 30-minute Intensity (I)).
The maximum average normalized cumulative R-Factor calculated for the target test events: 2 in/hr
for 20 minutes + 4 in/hr for 20 minutes + 6 in/hr for 20 minutes, is R = 231. The C-Factor associated
with this normalized maximum average result is the reported performance value. This facilitates
product-to-product comparison of test results at a common point of the storm event.
Graphs of R-Factor versus C-Factor for the protected condition and Soil Loss versus R-Factor for the
control condition are shown in Figures 8 and 9, respectively. Figure 8 includes the best regression
line fit to the test data to facilitate the determination of the C-factor. Figure 8 additionally allows
users of this report to evaluate performance at other points in the model storm by selecting the R
factor (and the corresponding C Factor) that may fit local conditions.
According to the test procedure ASTM D6459, a test may be stopped in the event of catastrophic soil
loss, as determined by the lab. AASHTO NTPEP ECP Panel has determined this practice places an
undue amount of subjectivity into the test. In lieu of stopping the test, the test is run to completion.
The runoff and sediment loss just prior to catastrophic failure is separated from that occurring after.
This additional point is used in the creating of the Soil Loss verses R Factor Graph.
The tests reported herein did not experience catastrophic slope failure. Linear (R2=0.67), power
(R2= 0.65), exponential (R
2= 0.52), and polynomial (R
2 = 0.70) fits were evaluated.
The overall C-Factor information shown in Table 4 is derived from Figure 8 which relates the C-
Factors and associated R-Factors given in Table 3.
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
8
Table 3. Summary Data Table – Protected Slopes
Slope # &
Product
Test #
(run # - target
intensity)
Intensity
(in/hr)
Runoff
(gallons)
Cumm.
R-Factor
Soil Loss
(lbs/plot/event)
Cumm. Soil
Loss
(Tons/Acre)
Control Soil
Loss at Cumm.
R-Factor
(Tons/Acre)
Cumm.
C-
Factor
1 – ANTI-WASH
/ GEOJUTE
1-2 2.17 10.34 10.92 0.822 0.056 2.506 0.022
1-4 4.29 59.15 82.92 3.010 0.261 19.029 0.014
1-6 6.30 252.88 260.08 78.390 5.596 59.688 0.094
2 – ANTI-WASH
/ GEOJUTE
2-2 2.05 1.24 9.68 0.050 0.003 2.223 0.002
2-4 4.06 104.88 73.82 3.410 0.236 16.941 0.014
2-6 6.26 253.05 246.93 52.850 3.833 56.671 0.068
3 – ANTI-WASH
/ GEOJUTE
3-2 2.09 1.32 10.09 0.010 0.001 2.315 0.000
3-4 4.06 103.86 74.64 20.540 1.399 17.129 0.082
3-6 6.06 179.06 238.07 60.330 5.505 54.636 0.101
Table 4. Overall C-Factor
Product C-Factor Calculation
ANTI-WASH / GEOJUTE &
1.5 staples/sy
0.084 C = - 0.0000007533R2 +
0.0005375687R
y = -0.0000007533x2 + 0.0005375687xR² = 0.6955390336
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280
C-F
acto
r
R-Factor
C-Factor vs. R-Factor(GeoJute on TRI-Loam; 3:1 Slope)
2 + 4 + 6 in/hr:R = 231
C = - 0.0000007533R2 + 0.0005375687R
C = 0.084
Figure 8. R-Factor vs. C-Factor – Tested Product
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
9
y = 0.2295xR² = 0.9538
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
0 50 100 150 200 250 300 350
So
il L
oss
(T
/A)
RUSLE R (US Customary Units)
Soil Loss vs RUSLE R (Control Testing of TRI-Loam; 3:1 Slope)
Slope 1 - 10/29/09
Slope 2 - 8/17/09
Slope 3 - 10/29/09
Slope 1 - 16Apr10
Slope 2 - 16Apr10
Slope 3 - 8Apr10
Slope 1 - 21Apr10
Slope 2 - 23Apr10
Slope 3 - 23Apr10
Slope 1 - 8/6/10
Slope 2 - 8/6/10
Slope 3 - 8/6/10
Slope 1 - 3Nov10
Slope 2 - 3Nov10
Slope 3 - 3Nov10
Slope 3 - 22Mar11
all slopes
Linear (all slopes)
From RUSLE:A = R K LS C P
For Control: LS = 2.78; P = 1.0; C = 1.0K = (A/R) / 2.78 = m / 2.78K = 0.2295 / 2.78 = 0.083
The cummulative R-Factor calculated for the following events: 2 in/hr for 20 min + 4 in/hr for 20 min + 6 in/hr for 20 min, is R = 231and the associated soil loss is 53.0 tons/acre
Figure 9. R-Factor vs. Soil Loss – Control Tests
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
Appendix
APPENDIX A – RECORDED DATA
Test Record Sheets
Sediment Concentration Data
Runoff Data
Soil Moisture Content
Soil Loss Tables
# Time
Start Rain: 9:25 AM 1 9:28 XSampling
interval: 0:03 2 9:31 X
Rain Time (min): 20.00 Test Time (min): 21.00 3 9:34 X
Descr:. Woven Jute RECP 4 9:37 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 9:40 X
6 9:43 X
wc1 = 17.8% Set valves to 11 psi. 7
d = 18 mm 8
i = 2.13 in/hr P = 11 psi 9
10
x 11
B P = 11 psi X 12
x x 13
X P = 11 psi C x 14
x x 15
x D P = 11 psi X 12
x x 13
X P = 11 psi E x 14
x x 15
x F P = 11 psi X
x x
x P = 11 psi G x # Time
Time to Collect 1
gal, sec
X x 1 3 405
x H P = 11 psi x 2 12 94
x X 3 15 60
x P = 11 psi I x 4 18 43
X x 5
X J P = 11 psi x 6
X 7
X 8
d = 19 mm 9
i = 2.24 in/hr Temp. 74 deg 10
wc3 = 17.5% Hum. 89 % 11
d = 18 in 12
i = 2.13 in/hr Average Depth: in. 13
wc2 = 18.1% Avg Rainfall Intensity: in/hr 14
15
12
13
14
15
Notes:
0 mph breeze.
Approx 12 gal collected.
0.72
2.17
Slope #: 1 Target Rain: 2 in/hr
SLOPE #1
GeoJute
A
x X x x
NTP#0000654
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 9:45 AM
End Runoff:
DDRF Rainfall Testing
9:46 AM
Lot #:
Date:
Product:
8-Apr-11
(circle "x" for open valves)
# Time
Start Rain: 9:50 AM 1 9:52 XSampling
interval: 0:02 2 9:54 X
Rain Time (min): 20.00 Test Time (min): 22.00 3 9:56 X
Descr:. Woven Jute RECP 4 9:58 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 10:00 X
Set valves to 11 psi. 6 10:02 X
wc1 = 17.8% 7 10:04 X
d = 39 mm 8 10:06 X
i = 4.61 in/hr P = 11 psi 9 10:08 X
10 10:10 X
X 11
B P = 11 psi X 12
X x 13
X P = 11 psi C x 14
x X 15
x D P = 11 psi X 12
X x 13
X P = 11 psi E x 14
x X 15
x F P = 11 psi X
x x
x P = 11 psi G x # Time
Time to Collect 1
gal, sec
X x 1 2 100
X H P = 11 psi x 2 4 66
x X 3 6 38
X P = 11 psi I X 4 8 24
X x 5 10 22
X J P = 11 psi X 6 12 18
X 7 14 22
X 8 16 17
d = 34 mm 9 18 13
i = 4.02 in/hr Temp. 76 deg 10 20 11
wc3 = 17.5% Hum. 90 % 11
d = 36 mm 12
i = 4.25 in/hr Average Depth: in. 13
wc2 = 18.1% Avg Rainfall Intensity: in/hr 14
15
12
13
14
15
Notes:
0 mph breeze. Approx 55 gal collected.
1.43
4.29
TOP OF SLOPE
A
10:12 AM
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Date:
SLOPE #1
Slope #: 1 Target Rain: 4 in/hr
End Rain: 10:10 AM
DDRF Rainfall Testing
8-Apr-11
Lot #: NTP#0000654
Product: GeoJute
End Runoff:
(circle "x" for open valves)
X X x x
Runoff Rate Measurements
# Time
Start Rain: 10:25 AM 1 10:27 XSampling
interval: 0:02 2 10:29 X
Rain Time (min): 20.00 Test Time (min): 22.00 3 10:31 X
Descr:. Woven Jute RECP 4 10:33 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 10:35 X
6 10:37 X
wc1 = 17.8% 7 10:39 X
d = 56 mm 8 10:41 X
i = 6.61 in/hr P = 10 psi 9 10:43 X
10 10:45 X
X 11
B P = 10 psi X 12
X X 13
X P = 10 psi C x 14
X X 15
x D P = 11 psi X 12
X X 13
X P = 11 psi E x 14
X X 15
x F P = 11 psi X
x X
X P = 11 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 2 8
X H P = 11 psi X 2 4 7
X X 3 6 6
X P = 11 psi I X 4 8 5
X X 5 10 5
X J P = 11 psi X 6 12 5
X 7 14 5
X 8 16 4
d = 54 mm 9 18 4
i = 6.38 in/hr Temp. 77 deg 10 20 4
wc3 = 17.5% Hum. 92 % 11
d = 50 mm 12
i = 5.91 in/hr Average Depth: in. 13
wc2 = 18.1% Avg Rainfall Intensity: in/hr 14
15
12
13
14
15
Product: GeoJute
NTP#0000654
Set valves to 11 psi.
Lot #:
A
X X X x
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
DDRF Rainfall Testing
Date: 8-Apr-11
Slope #: 1 Target Rain: 6 in/hr
SLOPE #1
(circle "x" for open valves)
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 10:45 AM
10:47 AMEnd Runoff:
Notes:
0 mph breeze.
Approx 235 gal collected.
2.10
6.30
# Time
Start Rain: 10:55 AM 1 10:58 XSampling
interval: 0:03 2 11:01 X
Rain Time (min): 20.00 Test Time (min): 22.00 3 11:04 X
Descr:. Woven Jute RECP 4 11:07 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 11:10 X
6 11:13 X
wc1 = 17.7% Set valves to 11 psi. 7
d = 20 mm 8
i = 2.36 in/hr P = 11 psi 9
10
x 11
X P = 11 psi B 12
x x 13
x C P = 11 psi X 14
x x 15
X P = 11 psi D x 12
x x 13
x E P = 11 psi X 14
x x 15
X P = 11 psi F x
x x
x G P = 11 psi x # Time
Time to Collect 1
Gallon, sec
x X 1 3 1020
x P = 11 psi H x 2
X x 3
x I P = 11 psi x 4
x X 5
x P = 11 psi J X 6
X 7
X 8
d = 14 mm 9
i = 1.65 in/hr Temp. 88 deg 10
wc2 = 17.2% Hum. 91 % 11
d = 18 mm 12
i = 2.13 in/hr Average Depth: in. 13
wc3 = 18.0% Avg Rainfall Intensity: in/hr 14
15
12
13
14
15
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 11:15 AM
Slope #: 2
Notes:
0 mph breeze from the .
Approx 2 gal collected.
0.68
2.05
11:17 AM
Product:
Target Rain: 2 in/hr
(circle "x" for open valves)
x x X x
DDRF Rainfall Testing
Date:
SLOPE #2
End Runoff:
Lot #:
8-Apr-11
GeoJute
NTP#0000655
A
# Time
Start Rain: 11:50 AM 1 11:52 XSampling
interval: 0:02 2 11:54 X
Rain Time (min): 20.00 Test Time (min): 22.00 3 11:56 X
Descr:. Woven Jute RECP 4 11:58 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 12:00 X
Set valves to 11 psi. 6 12:02 X
wc1 = 17.7% 7 12:04 X
d = 37 mm P = 11 psi 8 12:06 X
i = 4.37 in/hr 9 12:08 X
X 10 12:10 X
X P = 11 psi B 11
x X 12
x C P = 11 psi X 13
X x 14
X P = 11 psi D x 15
x X 12
x E P = 11 psi X 13
x x 14
X P = 11 psi F x 15
X x
x G P = 11 psi X
x X # Time
Time to Collect 1
Gallon, sec
x P = 11 psi H x 1 2 90
X x 2 4 53
X I P = 11 psi X 3 6 25
x X 4 8 28
X P = 11 psi J X 5 10 20
X 6 12 12
X 7 14 8
d = 32 mm 8 16 7
i = 3.78 in/hr 9 18 7
wc2 = 17.2% Temp. 74 deg 10 20 6
d = 34 mm Hum. 92 % 11
i = 4.02 in/hr 12
wc3 = 18.0% Average Depth: in. 13
Avg Rainfall Intensity: in/hr 14
15
12
13
14
15
Notes:
0 mph breeze. Approx. 104 gal collected.
1.35
4.06
Lot #:
Product: GeoJute
NTP#0000655
DDRF Rainfall Testing Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Date:
SLOPE #2
Slope #: 2 Target Rain: 4 in/hr
8-Apr-11
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 12:10 PM
End Runoff: 12:12 PM
X X x x
A
# Time
Start Rain: 12:20 PM 1 12:22 XSampling
interval: 0:02 2 12:24 X
Rain Time (min): 20.00 Test Time (min): 22.00 3 12:26 X
Descr:. Woven Jute RECP 4 12:28 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 12:30 X
6 12:32 X
wc1 = 17.7% Set valves to 11 psi. 7 12:34 X
d = 55 mm 8 12:36 X
i = 6.50 in/hr P = 11 psi 9 12:38 X
10 12:40 X
X 11
X P = 11 psi B 12
X X 13
x C P = 11 psi X 14
X X 15
X P = 11 psi D x 12
X X 13
x E P = 11 psi X 14
X X 15
X P = 11 psi F x
X x
x G P = 11 psi X # Time
Time to Collect 1
Gallon, sec
x X 1 2 75
X P = 11 psi H X 2 4 50
X X 3 6 12
X I P = 11 psi X 4 8 6
X X 5 10 5
X P = 11 psi J X 6 12 4
X 7 14 4
X 8 16 3
d = 53 mm 9 18 3
i = 6.26 in/hr Temp. 82 deg 10 20 3
wc2 = 17.2% Hum. 93 % 11
d = 51 mm 12
i = 6.02 in/hr Average Depth: in. 13
wc3 = 18.0% Avg Rainfall Intensity: in/hr 14
15
12
13
14
15
Slope #: 2 Target Rain: 6 in/hr
End Runoff: 12:42 PM
SLOPE #2
8-Apr-11
(circle "x" for open valves)
A
Notes:
0 mph breeze.
Approx 260 gal collected.
2.09
6.26
X X X x
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 12:40 PM
DDRF Rainfall Testing
Date:
Product:
Lot #:
GeoJute
NTP#0000655
# Time X
Start Rain: 1:00 PM 1 13:03 X
Sampling
interval: 0:03 2 13:06 X
Rain Time (min): 20.00 Test Time (min): 20.00 3 13:09 X
Descr:. Woven Jute RECP 4 13:12 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 13:15 X
6 13:18 X
wc1 = 16.5% Set valves to 11 psi. 7
d = 18.00 mm 8
i = 2.13 in/hr P = 12 psi 9
10
x 11
B P = 12 psi X 12
x x 13
X P = 12 psi C x 14
x x 15
x D P = 12 psi X 12
x x 13
X P = 12 psi E x 14
x x 15
x F P = 12 psi X
x x
x P = 12 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 3 845
x H P = 12 psi x 2
x X 3
x P = 12 psi I x 4
X x 5
X J P = 12 psi x 6
X 7
X 8
d = 17.00 mm 9
i = 2.01 in/hr * Temp. 85 deg 10
wc3 = 17.2% Hum. 91 % 11
d = 18.00 mm 12
i = 2.13 in/hr Average Depth: in. 13
wc2 = 17.7% Avg Rainfall Intensity: in/hr 14
15
Runoff Rate Measurements
End Runoff: 1:20 PM
A
x X x x
TOP OF SLOPE
(circle "x" for open valves)
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
End Rain:
DDRF Rainfall Testing
Slope #: 3
Date:
Product:
SLOPE #3
Target Rain: 2 in/hr
1:20 PM8-Apr-11
GeoJute
NTP#0000656
Notes:
0 mph breeze from the .
Approx 2 gal collected.
Lot #:
2.09
0.70
# Time
Start Rain: 1:30 PM 1 13:32 XSampling
interval: 0:02 2 13:34 X
Rain Time (min): 20.00 Test Time (min): 21.00 3 13:36 X
Descr:. Woven Jute RECP 4 13:38 X
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 13:40 X
Set valves to 12 psi. 6 13:42 X
wc1 = 16.5% 7 13:44 X
d = 35 mm 8 13:46 X
i = 4.13 in/hr P = 12 psi 9 13:48 X
10 13:50 X
X 11
B P = 12 psi X 12
X x 13
X P = 12 psi C x 14
x X 15
x D P = 12 psi X 12
X x 13
X P = 12 psi E x 14
x X 15
x F P = 12 psi X
x x
x P = 12 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 2 99
X H P = 12 psi x 2 4 50
x X 3 6 30
X P = 12 psi I X 4 8 28
X x 5 10 20
X J P = 12 psi X 6 12 10
X 7 14 8
X 8 16 7
d = 33 mm 9 18 6
i = 3.90 in/hr Temp. 86 deg 10 20 6
wc3 = 17.2% Hum. 95 % 11
d = 35 mm 12
i = 4.13 in/hr Average Depth: in. 13
wc2 = 17.7% Avg Rainfall Intensity: in/hr 14
15
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
End Runoff: 1:51 PM
(circle "x" for open valves)
SLOPE #3
Slope #: 3 Target Rain: 4 in/hr
TOP OF SLOPE
Product:
Lot #:
DDRF Rainfall Testing
8-Apr-11
GeoJute
NTP#0000656
End Rain: 1:50 PM
X X x x
A
Runoff Rate Measurements
Notes:
0 mph breeze.
Approx 103 gal collected.
1.35
4.06
Date:
# Time
Start Rain: 2:10 PM 1 14:12Sampling
interval: 0:02 2 14:14
Rain Time (min): 20.00 Test Time (min): 23.00 3 14:16
Descr:. Woven Jute RECP 4 14:18
Anchors: 6" Staples Anchorage: 1.5 staples/sy 5 14:20
6 14:22
wc1 = 16.5% 7 14:24
d = 51 mm 8 14:26
i = 6.02 in/hr P = 12 psi 9 14:28
10 14:30
X 11
B P = 12 psi X 12
X X 13
X P = 12 psi C x 14
X X 15
x D P = 12 psi X 12
X X 13
X P = 12 psi E x 14
X X 15
x F P = 12 psi X
x X
X P = 12 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 2 82
X H P = 12 psi X 2 4 62
X X 3 6 42
X P = 12 psi I X 4 8 30
X X 5 10 12
X J P = 12 psi X 6 12 6
X 7 14 4
X 8 16 4
d = 52 mm 9 18 4
i = 6.14 in/hr Temp. 85 deg 10 20 4
wc3 = 17.2% Hum. 93 % 11
d = 51 mm 12
i = 6.02 in/hr Average Depth: in. 13
wc2 = 17.7% Avg Rainfall Intensity: in/hr 14
15
12
13
14
15
Notes:
0 mph breeze.
Approx 177 gal collected.
2.02
6.06
A
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 2:30 PM
2:33 PMEnd Runoff:
(circle "x" for open valves)
Set valves to 12 psi.X X X x
8-Apr-11
GeoJute
NTP#0000656
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
DDRF Rainfall Testing
Date:
SLOPE #3
Slope #: 3 Target Rain: 6 in/hr
Product:
Lot #:
Sample
Number
Test
Time,
minutes
Total
Weight, g
Decanted
Weight, g
Dry
Weight, g
Bottle
Weight, g
Dry
Sediment
Weight,
mg
Total
Collected
Water Wt.,
g
Total
Collected
Volume of
Water, l
Sediment
Concentration,
mg/l
Runoff
Sampling
Time
Time to
Collect 1
gal
Associated
Runoff, gal
Associated
Sediment
Conc, mg/l
Associated
Solids Loss,
lbs
Solids
Loss
Prior to
Failure,
lbs
2.16535433 in/hr avg
8-Apr-11 2-1 3.00 71.13 34.42 26.71 26.71 0.00 44.42 0.04 0.00 3.00 405 1.44 4848.20 0.06
2-2 6.00 88.97 31.54 26.92 26.71 210.00 62.05 0.06 3384.37 12.00 94 2.44 9490.31 0.19
2-3 9.00 118.22 32.74 27.72 26.71 1010.00 90.50 0.09 11160.22 15.00 60 2.44 8653.51 0.18
2-4 12.00 150.1 37.39 27.87 26.71 1160.00 122.23 0.12 9490.31 18.00 43 2.43 9873.83 0.20
2-5 15.00 143.27 32.26 27.71 26.71 1000.00 115.56 0.12 8653.51 0.00 0 0.00 0.00
2-6 18.00 137.17 30.45 27.79 26.71 1080.00 109.38 0.11 9873.83 0.00 0 0.00 0.00
0.00 AVG = 7093.71 21.00 0 1.59 7093.71 0.09
4.29 in/hr avg 0.00 Total Solids Lost: 0.72
8-Apr-11 4-1 2.00 169.9 44.22 26.92 26.71 210.00 142.98 0.14 1468.74 2.00 100 2.20 1468.74 0.03
4-2 4.00 178.73 31.41 26.81 26.71 100.00 151.92 0.15 658.24 4.00 66 1.30 658.24 0.01
4-3 6.00 186.89 33.21 26.75 26.71 40.00 160.14 0.16 249.78 6.00 38 2.42 249.78 0.01
4-4 8.00 204.64 31.94 26.85 26.71 140.00 177.79 0.18 787.45 8.00 24 4.42 787.45 0.03
4-5 10.00 185.44 32.30 26.96 26.71 250.00 158.48 0.16 1577.49 10.00 22 5.36 1577.49 0.07
4-6 12.00 177.94 33.03 26.89 26.71 180.00 151.05 0.15 1191.66 12.00 18 6.44 1191.66 0.06
4-7 14.00 187.74 35.12 26.82 26.71 110.00 160.92 0.16 683.57 14.00 22 5.64 683.57 0.03
4-8 16.00 214.46 37.76 27.62 26.71 910.00 186.84 0.19 4870.48 16.00 17 6.76 4870.48 0.27
4-9 18.00 160.42 32.64 28.90 26.71 2190.00 131.52 0.13 16651.46 18.00 13 8.92 16651.46 1.24
4-10 20.00 200.27 34.61 28.86 26.71 2150.00 171.41 0.17 12543.03 20.00 11 10.73 12543.03 1.12
AVG = 4068.19 22.00 0 4.95 4068.19 0.17
6.30 in/hr avg Total Solids Lost: 3.04
8-Apr-11 6-1 2.00 207.71 34.26 27.08 26.71 370.00 180.63 0.18 2048.39 2.00 8.00 16.00 2048.39 0.27
6-2 4.00 258.95 70.60 29.35 26.71 2640.00 229.60 0.23 11498.26 4.00 7.00 17.00 11498.26 1.63
6-3 6.00 310.03 88.56 35.51 26.71 8800.00 274.52 0.27 32055.95 6.00 6.00 19.83 32055.95 5.30
6-4 8.00 240.76 56.69 35.41 26.71 8700.00 205.35 0.21 42366.69 8.00 5.00 23.80 42366.69 8.41
6-5 10.00 279.75 77.84 36.43 26.71 9720.00 243.32 0.24 39947.39 10.00 5.00 24.00 39947.39 8.00
6-6 12.00 317.64 82.82 37.17 26.71 10460.00 280.47 0.28 37294.54 12.00 5.00 24.00 37294.54 7.47
6-7 14.00 296.6 75.56 38.82 26.71 12110.00 257.78 0.26 46978.04 14.00 5.00 24.00 46978.04 9.41
6-8 16.00 317.63 78.24 38.82 26.71 12110.00 278.81 0.28 43434.60 16.00 4.00 29.75 43434.60 10.78
6-9 18.00 250.57 73.82 39.27 26.71 12560.00 211.30 0.21 59441.55 18.00 4.00 30.00 59441.55 14.88
6-10 20.00 313.08 79.98 40.70 26.71 13990.00 272.38 0.27 51362.07 20.00 4.00 30.00 51362.07 12.86
AVG = 36642.75 22.00 0.00 14.50 36642.75 4.43
Total Solids Lost: 83.44
Slope #1 - Sediment Concentration
Sample
Number
Test
Time,
minutes
Total
Weight, g
Decanted
Weight, g
Dry
Weight, g
Bottle
Weight, g
Dry
Sediment
Weight,
mg
Total
Collected
Water Wt.,
g
Total
Collected
Volume of
Water, l
Sediment
Concentration,
mg/l
Runoff
Sampling
Time
Time to
Collect 1
gal
Associated
Runoff, gal
Associated
Sediment
Conc, mg/l
Associated
Solids Loss,
lbs
Solids
Loss
Prior to
Failure,
lbs
2.04724409 in/hr avg
8-Apr-11 2-1 3.00 87.15 29.37 26.96 26.71 250.00 60.19 0.06 4153.51 3.00 1020 1.18 4279.59 0.04
2-2 6.00 110.16 30.61 27.08 26.71 370.00 83.08 0.08 4453.54 0.00 0 0.00 0.00
2-3 9.00 84.02 30.16 27.06 26.71 350.00 56.96 0.06 6144.66 0.00 0 0.00 0.00
2-4 12.00 113.88 30.52 27.05 26.71 340.00 86.83 0.09 3915.70 0.00 0 0.00 0.00
2-5 15.00 119.86 29.88 27.05 26.71 340.00 92.81 0.09 3663.40 0.00 0 0.00 0.00
2-6 18.00 131.64 30.54 27.06 26.71 350.00 104.58 0.10 3346.72 0.00 0 0.00 0.00
AVG = 1673.36 22.00 0 0.06 1673.36 0.00
4.06 in/hr avg Total Solids Lost: 0.04
8-Apr-11 4-1 2.00 233.89 30.21 26.71 26.71 0.00 207.18 0.21 0.00 2.00 90 2.33 0.00 0.00
4-2 4.00 295.37 32.13 26.74 26.71 30.00 268.63 0.27 111.68 4.00 53 1.57 111.68 0.00
4-3 6.00 298.94 30.95 26.90 26.71 190.00 272.04 0.27 698.43 6.00 25 3.68 698.43 0.02
4-4 8.00 290.98 30.88 26.75 26.71 40.00 264.23 0.26 151.38 8.00 28 4.39 151.38 0.01
4-5 10.00 295.16 31.57 27.00 26.71 290.00 268.16 0.27 1081.44 10.00 20 5.60 1081.44 0.05
4-6 12.00 294.56 36.40 27.23 26.71 520.00 267.33 0.27 1945.16 12.00 12 9.33 1945.16 0.15
4-7 14.00 291.91 34.32 27.15 26.71 440.00 264.76 0.26 1661.88 14.00 8 14.50 1661.88 0.20
4-8 16.00 287.03 38.81 28.11 26.71 1400.00 258.92 0.26 5407.08 16.00 7 17.00 5407.08 0.77
4-9 18.00 290.8 64.77 28.93 26.71 2220.00 261.87 0.26 8477.49 18.00 7 17.14 8477.49 1.21
4-10 20.00 293.07 36.77 29.19 26.71 2480.00 263.88 0.26 9398.21 20.00 6 19.83 9398.21 1.56
AVG = 4699.11 22.00 0 9.50 4699.11 0.37
6.26 in/hr avg Total Solids Lost: 4.34
8-Apr-11 6-1 2.00 301.98 39.24 27.85 26.71 1140.00 274.13 0.27 4158.61 2.00 75.00 2.60 4158.61 0.09
6-2 4.00 295.52 41.69 28.57 26.71 1860.00 266.95 0.27 6967.60 4.00 50.00 1.90 6967.60 0.11
6-3 6.00 300.33 63.03 30.52 26.71 3810.00 269.81 0.27 14121.05 6.00 12.00 6.83 14121.05 0.81
6-4 8.00 301.63 58.87 31.54 26.71 4830.00 270.09 0.27 17882.93 8.00 6.00 19.00 17882.93 2.83
6-5 10.00 270.86 55.44 31.80 26.71 5090.00 239.06 0.24 21291.73 10.00 5.00 23.80 21291.73 4.23
6-6 12.00 303.3 52.95 32.23 26.71 5520.00 271.07 0.27 20363.74 12.00 4.00 29.75 20363.74 5.05
6-7 14.00 316.7 63.69 34.04 26.71 7330.00 282.66 0.28 25932.22 14.00 4.00 30.00 25932.22 6.49
6-8 16.00 305.75 42.93 34.94 26.71 8230.00 270.81 0.27 30390.31 16.00 3.00 39.67 30390.31 10.06
6-9 18.00 294.99 53.00 34.47 26.71 7760.00 260.52 0.26 29786.58 18.00 3.00 40.00 29786.58 9.94
6-10 20.00 301.25 51.64 35.09 26.71 8380.00 266.16 0.27 31484.82 20.00 3.00 40.00 31484.82 10.51
AVG = 15742.41 20.00 3 40.00 15742.41 5.25
Total Solids Lost: 55.37
Slope #2 - Sediment Concentration
Sample
Number
Test
Time,
minutes
Total
Weight, g
Decanted
Weight, g
Dry
Weight, g
Bottle
Weight, g
Dry
Sediment
Weight,
mg
Total
Collected
Water Wt.,
g
Total
Collected
Volume of
Water, l
Sediment
Concentration,
mg/l
Runoff
Sampling
Time
Time to
Collect 1
gal
Associated
Runoff, gal
Associated
Sediment
Conc, mg/l
Associated
Solids Loss,
lbs
Solids
Loss
Prior to
Failure,
lbs
2.08661417 in/hr avg
8-Apr-11 2-1 3.00 82.38 30.51 26.87 26.71 160.00 55.51 0.06 2882.36 3.00 845.00 1.21 916.17 0.01
2-2 6.00 75.7 30.12 26.72 26.71 10.00 48.98 0.05 204.16 0.00 0.00 0.00 0.00
2-3 9.00 79.18 30.75 26.78 26.71 70.00 52.40 0.05 1335.88 0.00 0.00 0.00 0.00
2-4 12.00 83.3 30.88 26.72 26.71 10.00 56.58 0.06 176.74 0.00 0.00 0.00 0.00
2-5 15.00 90.99 35.13 26.76 26.71 50.00 64.23 0.06 778.45 0.00 0.00 0.00 0.00
2-6 18.00 110.46 34.77 26.72 26.71 10.00 83.74 0.08 119.42 0.00 0.00 0.00 0.00
AVG = 916.17 20.00 0.00 0.10 0.00 0.00
4.06 in/hr avg Total Solids Lost: 0.01
8-Apr-11 4-1 2.00 210.73 31.07 26.78 26.71 70.00 183.95 0.18 380.54 2.00 99.00 2.21 380.54 0.01
4-2 4.00 284.8 39.51 26.91 26.71 200.00 257.89 0.26 775.52 4.00 50.00 1.42 775.52 0.01
4-3 6.00 282.29 33.63 27.88 26.71 1170.00 254.41 0.25 4598.88 6.00 30.00 3.33 4598.88 0.13
4-4 8.00 281.37 32.23 28.88 26.71 2170.00 252.49 0.25 8594.40 8.00 28.00 4.21 8594.40 0.30
4-5 10.00 285.65 48.61 30.29 26.71 3580.00 255.36 0.26 14019.42 10.00 20.00 5.60 14019.42 0.66
4-6 12.00 270.37 35.96 31.35 26.71 4640.00 239.02 0.24 19412.60 12.00 10.00 11.00 19412.60 1.78
4-7 14.00 274.51 58.14 33.53 26.71 6820.00 240.98 0.24 28301.10 14.00 8.00 14.75 28301.10 3.48
4-8 16.00 286.35 54.00 34.19 26.71 7480.00 252.16 0.25 29663.71 16.00 7.00 17.00 29663.71 4.21
4-9 18.00 292.01 50.61 35.32 26.71 8610.00 256.69 0.26 33542.41 18.00 6.00 19.83 33542.41 5.55
4-10 20.00 290.15 41.67 35.89 26.71 9180.00 254.26 0.25 36104.77 20.00 6.00 20.00 36104.77 6.02
AVG = 17539.34 21.00 0.00 4.50 17539.34 0.66
6.06 in/hr avg Total Solids Lost: 22.81
8-Apr-11 6-1 2.00 278.61 50.69 32.23 26.71 5520.00 246.38 0.25 22404.42 2.00 82.00 2.46 22404.42 0.46
6-2 4.00 294.58 42.63 31.53 26.71 4820.00 263.05 0.26 18323.51 4.00 62.00 1.61 18323.51 0.25
6-3 6.00 295.55 51.50 32.78 26.71 6070.00 262.77 0.26 23100.05 6.00 42.00 2.38 23100.05 0.46
6-4 8.00 311.17 56.99 34.30 26.71 7590.00 276.87 0.28 27413.59 8.00 30.00 3.60 27413.59 0.82
6-5 10.00 284.11 60.81 36.92 26.71 10210.00 247.19 0.25 41304.26 10.00 12.00 8.50 41304.26 2.93
6-6 12.00 296.57 41.69 36.83 26.71 10120.00 259.74 0.26 38962.04 12.00 6.00 19.00 38962.04 6.18
6-7 14.00 258.6 61.73 37.50 26.71 10790.00 221.10 0.22 48801.45 14.00 4.00 29.50 48801.45 12.01
6-8 16.00 305.41 49.28 37.62 26.71 10910.00 267.79 0.27 40740.88 16.00 4.00 30.00 40740.88 10.20
6-9 18.00 310.1 48.41 38.47 26.71 11760.00 271.63 0.27 43294.19 18.00 4.00 30.00 43294.19 10.84
6-10 20.00 299.28 65.82 39.06 26.71 12350.00 260.22 0.26 47459.84 20.00 4.00 30.00 47459.84 11.88
AVG = 35180.42 23.00 0.00 22.00 35180.42 6.46
Total Solids Lost: 62.48
Slope #3 - Sediment Concentration
Sample
Number
Test
Time,
minutes
Time per
Gallon,
sec
Interval
Time, min
Total Time,
min
Collection
Mid-Time,
min
Runoff
Rate,
gal/min
Associated
Runoff, gal
Cumulative
Runoff, gal
2.17 in/hr
2 0.00 0 0.00 0.00 0.00 0.00 0.00 0.00
2-1 3.00 405 9.75 9.75 6.38 0.15 1.44 1.44
2-2 12.00 94 3.82 13.57 12.78 0.64 2.44 3.88
2-3 15.00 60 2.43 16.00 15.50 1.00 2.44 6.32
2-4 18.00 43 2.72 18.72 36.72 1.40 2.43 8.75
2-5 0.00 0 0.00 18.72 21.00 1.40 0.00 8.75
2-6 0.00 0 0.00 18.72 21.00 1.40 0.00 8.75
2-end 21.00 2.28 21.00 0.70 1.59 10.34 Total Collected Runoff (approx)
4.29 in/hr
4 0 0 0.00 0.00 0.00 0.00 0.00 0.00
4-1 2 100 3.67 3.67 2.83 0.60 2.20 2.20
4-2 4 66 1.43 5.10 4.55 0.91 1.30 3.50
4-3 6 38 1.53 6.63 6.32 1.58 2.42 5.92
4-4 8 24 1.77 8.40 8.20 2.50 4.42 10.34
4-5 10 22 1.97 10.37 10.18 2.73 5.36 15.70
4-6 12 18 1.93 12.30 12.15 3.33 6.44 22.15
4-7 14 22 2.07 14.37 14.18 2.73 5.64 27.79
4-8 16 17 1.92 16.28 16.14 3.53 6.76 34.55
4-9 18 13 1.93 18.22 18.11 4.62 8.92 43.47
4-10 20 11 1.97 20.18 20.09 5.45 10.73 54.20
4-end 22.00 1.82 22.00 2.73 4.95 59.15 Total Collected Runoff (approx)
6.30 in/hr
6 0 0 0.00 0.00 0.00 0.00 0.00 0.00
6-1 2 8 2.13 2.13 2.07 7.50 16.00 16.00
6-2 4 7 1.98 4.12 4.06 8.57 17.00 33.00
6-3 6 6 1.98 6.10 6.05 10.00 19.83 52.83
6-4 8 5 1.98 8.08 8.04 12.00 23.80 76.63
6-5 10 5 2.00 10.08 10.04 12.00 24.00 100.63
6-6 12 5 2.00 12.08 12.04 12.00 24.00 124.63
6-7 14 5 2.00 14.08 14.04 12.00 24.00 148.63
6-8 16 4 1.98 16.07 16.03 15.00 29.75 178.38
6-9 18 4 2.00 18.07 18.03 15.00 30.00 208.38
6-10 20 4 2.00 20.07 20.03 15.00 30.00 238.38
6-end 22.00 1.93 22.00 7.50 14.50 252.88 Total Collected Runoff (approx)
8-Apr-11
Slope #1
Sample
Number
Test
Time,
minutes
Time per
Gallon,
sec
Interval
Time, min
Total
Time, min
Collection
Mid-Time,
min
Runoff
Rate,
gal/min
Associate
d Runoff,
gal
Cumulative
Runoff, gal
2.047244 in/hr
2 0.00 0 0.00 0.00 0.00 0.00 0.00 0.00
2-1 3.00 1020 20.00 20.00 11.50 0.06 1.18 1.18
2-2 0.00 0 0.00 20.00 22.00 0.06 0.00 1.18
2-3 0.00 0 0.00 20.00 22.00 0.06 0.00 1.18
2-4 0.00 0 0.00 20.00 22.00 0.06 0.00 1.18
2-5 0.00 0 0.00 20.00 22.00 0.06 0.00 1.18
2-6 0.00 0 0.00 20.00 22.00 0.06 0.00 1.18
2-end 22.00 2.00 22.00 0.03 0.06 1.24 Total Collected Runoff (approx)
4.06 in/hr
4 0 0 0.00 0.00 0.00 0.00 0.00 0.00
4-1 2 90 3.50 3.50 2.75 0.67 2.33 2.33
4-2 4 53 1.38 4.88 4.44 1.13 1.57 3.90
4-3 6 25 1.53 6.42 6.21 2.40 3.68 7.58
4-4 8 28 2.05 8.47 8.23 2.14 4.39 11.97
4-5 10 20 1.87 10.33 10.17 3.00 5.60 17.57
4-6 12 12 1.87 12.20 12.10 5.00 9.33 26.91
4-7 14 8 1.93 14.13 14.07 7.50 14.50 41.41
4-8 16 7 1.98 16.12 16.06 8.57 17.00 58.41
4-9 18 7 2.00 18.12 18.06 8.57 17.14 75.55
4-10 20 6 1.98 20.10 20.05 10.00 19.83 95.38
4-end 22.00 1.90 22.00 5.00 9.50 104.88 Total Collected Runoff (approx)
6.26 in/hr
6 0 0 0.00 0.00 0.00 0.00 0.00 0.00
6-1 2 75 3.25 3.25 2.63 0.80 2.60 2.60
6-2 4 50 1.58 4.83 4.42 1.20 1.90 4.50
6-3 6 12 1.37 6.20 6.10 5.00 6.83 11.33
6-4 8 6 1.90 8.10 8.05 10.00 19.00 30.33
6-5 10 5 1.98 10.08 10.04 12.00 23.80 54.13
6-6 12 4 1.98 12.07 12.03 15.00 29.75 83.88
6-7 14 4 2.00 14.07 14.03 15.00 30.00 113.88
6-8 16 3 1.98 16.05 16.03 20.00 39.67 153.55
6-9 18 3 2.00 18.05 18.03 20.00 40.00 193.55
6-10 20 3 2.00 20.05 20.03 20.00 40.00 233.55
6-end 22.00 1.95 22.00 10.00 19.50 253.05 Total Collected Runoff (approx)
8-Apr-11
Slope #2
Sample
Number
Test
Time,
minutes
Time per
Gallon,
sec
Interval
Time, min
Total
Time, min
Collection
Mid-Time,
min
Runoff
Rate,
gal/min
Associated
Runoff, gal
Cumulative
Runoff, gal
2.086614 in/hr
2 0.00 0 0.00 0.00 0.00 0.00 0.00 0.00
2-1 3.00 845 17.08 17.08 10.04 0.07 1.21 1.21
2-2 0.00 0 0.00 17.08 20.00 0.07 0.00 1.21
2-3 0.00 0 0.00 17.08 20.00 0.07 0.00 1.21
2-4 0.00 0 0.00 17.08 20.00 0.07 0.00 1.21
2-5 0.00 0 0.00 17.08 20.00 0.07 0.00 1.21
2-6 0.00 0 0.00 17.08 20.00 0.07 0.00 1.21
2-end 20.00 2.92 20.00 0.04 0.10 1.32 Total Collected Runoff (approx)
4.06 in/hr
4 0 0 0.00 0.00 0.00 0.00 0.00 0.00
4-1 2 99 3.65 3.65 2.83 0.61 2.21 2.21
4-2 4 50 1.18 4.83 4.42 1.20 1.42 3.63
4-3 6 30 1.67 6.50 6.25 2.00 3.33 6.97
4-4 8 28 1.97 8.47 8.23 2.14 4.21 11.18
4-5 10 20 1.87 10.33 10.17 3.00 5.60 16.78
4-6 12 10 1.83 12.17 12.08 6.00 11.00 27.78
4-7 14 8 1.97 14.13 14.07 7.50 14.75 42.53
4-8 16 7 1.98 16.12 16.06 8.57 17.00 59.53
4-9 18 6 1.98 18.10 18.05 10.00 19.83 79.36
4-10 20 6 2.00 20.10 20.05 10.00 20.00 99.36
4-end 21.00 0.90 21.00 5.00 4.50 103.86 Total Collected Runoff (approx)
6.06 in/hr
6 0 0 0.00 0.00 0.00 0.00 0.00 0.00
6-1 2 82 3.37 3.37 2.68 0.73 2.46 2.46
6-2 4 62 1.67 5.03 4.52 0.97 1.61 4.08
6-3 6 42 1.67 6.70 6.35 1.43 2.38 6.46
6-4 8 30 1.80 8.50 8.25 2.00 3.60 10.06
6-5 10 12 1.70 10.20 10.10 5.00 8.50 18.56
6-6 12 6 1.90 12.10 12.05 10.00 19.00 37.56
6-7 14 4 1.97 14.07 14.03 15.00 29.50 67.06
6-8 16 4 2.00 16.07 16.03 15.00 30.00 97.06
6-9 18 4 2.00 18.07 18.03 15.00 30.00 127.06
6-10 20 4 2.00 20.07 20.03 15.00 30.00 157.06
6-end 23.00 2.93 23.00 7.50 22.00 179.06 Total Collected Runoff (approx)
8-Apr-11
Slope #3
Run #: 1 2 3
Slope No. SLOPE #1 SLOPE #2 SLOPE #3
Test Date: 8-Apr-11 8-Apr-11 8-Apr-11
Avg Moisture Content: 17.82% 17.62% 17.12%
Location T-1 T-2 T-3
Wt. Of cup + wet soil, g 72.72 63.57 65.46
Wt. Of cup + dry soil, g 64.94 57.22 59.21
Wt. Of cup, g 21.35 21.35 21.35
Wt. Of dry soil, g 43.59 35.87 37.86
Wt. Of water, g 7.78 6.35 6.25
Water Content, w% 17.8% 17.7% 16.5%
Location M-1 M-2 M-3
Wt. Of cup + wet soil, g 83.26 82.16 74.35
Wt. Of cup + dry soil, g 74.03 73.25 66.58
Wt. Of cup, g 21.35 21.35 21.35
Wt. Of dry soil, g 52.68 51.9 45.23
Wt. Of water, g 9.23 8.91 7.77
Water Content, w% 17.5% 17.2% 17.2%
Location B-1 B-2 B-3
Wt. Of cup + wet soil, g 72.33 77.05 81.23
Wt. Of cup + dry soil, g 64.52 68.56 72.24
Wt. Of cup, g 21.35 21.35 21.35
Wt. Of dry soil, g 43.17 47.21 50.89
Wt. Of water, g 7.81 8.49 8.99
Water Content, w% 18.1% 18.0% 17.7%
WATER CONTENT DETERMINATION
Total Dry Sediments: 0.82
2 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 0.922
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 0.822 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 10.3
Dry Collected Sediments, lbs 0.82 0.00
Total Dry Sediments: 3.01
4 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 3.11
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 3.01 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 59.2
Dry Collected Sediments, lbs 3.01 0.00
Total Dry Sediments: 78.39
6 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 78.49
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 78.39 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 252.9
Dry Collected Sediments, lbs 78.39 0.00
Add'l Soil Collected after Major
Slumping at 8:30
Collected
Sediments,
gal
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Collected
Sediments,
gal
SLOPE #1 - Sediment Weights
Not Measured
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Collected
Sediments,
gal
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Total Dry Sediments: 0.05
2 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 0.15
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 0.05 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 1.2
Dry Collected Sediments, lbs 0.05 0.00
Total Dry Sediments: 3.41
4 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 3.51
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 3.41 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 104.9
Dry Collected Sediments, lbs 3.41 0.00
Total Dry Sediments: 52.85
6 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 52.95
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 52.85 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 253.1
Dry Collected Sediments, lbs 52.85 0.00
Add'l Soil Collected after Major
Slumping at 5:00
Collected
Sediments,
gal
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Collected
Sediments,
gal
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Collected
Sediments,
gal
SLOPE #2 - Sediment Weights
Not Measured
Total Dry Sediments: 0.01
2 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 0.11
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 0.01 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 1.3
Dry Collected Sediments, lbs 0.01 0.00
Total Dry Sediments: 20.54
4 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 20.64
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 20.54 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 103.9
Dry Collected Sediments, lbs 20.54 0.00
Total Dry Sediments: 60.33
6 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 60.43
Wt. Of pan, lb 0.1
Wt. Of dry soil, lb 60.33 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 179.1
Dry Collected Sediments, lbs 60.33 0.00
No Major Slumping
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Collected
Sediments,
gal
Typ. TSS in
Decanted
Collected
Runoff,
lb/gal
Collected
Sediments,
gal
Collected
Sediments,
gal
SLOPE #3 - Sediment Weights
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
Appendix
APPENDIX B – TEST SOIL
Test Soil Grain Size Distribution Curve
Compaction Curves
Field Compaction Verification
January 2010
0
10
20
30
40
50
60
70
80
90
100
0.0010.010.1110100
Pe
rce
nt
Fin
er
Particle Size (mm)
DDRF ASTM D 6459 & D 6460 Blended Test Soil
ASTM ASTM D 6459 & D 6460 Target Loam
Plasticity (ASTM D 4318)Liquid Limit: 35Plastic Limit: 30Plastic Index: 5
Soil classifies as a sandy silt (ML) in accordance with ASTM D 2487
Tested by: Tamika Walker
TRI observes and maintains client confidentiality. TRI limits reproduction of this report, except in full, without prior approval of TRI.
9063 Bee Caves Road Austin, TX 78733-6201 (512) 263-2101 (512) 263-2558 1-800-880-TEST
Cheng-Wei Chen, 02/03/10
Quality Review/Date
The testing herein is based upon accepted industry practice as well as the test method listed. Test results reported herein do not apply
to samples other than those tested. TRI neither accepts responsibility for nor makes claim as to the final use and purpose of the material.
Proctor Compaction Test
80
85
90
95
100
105
110
115
120
5 10 15 20 25 30 35 40 45
Moisture Content (%)
Dry
Den
sity
(pcf
)
2.80
2.60
2.70
Project: TRI-DDRF
Sample No.: DDRF Test Soil - January 2010
TRI Log No.: E2337-12-04
Test Method: ASTM D 698 - Method A
Maximum Dry Density (pcf): 98.7
Optimum Moisture Content (%): 20.0
Calibration Date: 8/16/2009
Sand Used: Pool Filter Sand
Volume Measure: Liquid Volume, Vm (cm3): 425
Wt. of Sand to Fill Known Volume:
Total Wt (g) Pan Wt (g) Net Wt (g)
Trial #1 (g) 663.3 11.5 651.8
Trial #2 (g) 661.3 11.5 649.8
Trial #3 (g) 657.3 11.5 645.8
Wa (g) 649.1
Density of Sand, ɣsand (g/cm3) = Wa / Vm = 1.53
Wt. of Sand to Fill Cone:
Total Wt (g) Cone Wt (g) Net Wt (g)
Trial #1 (g) 7046.0 5152.9 1893.1
Trial #2 (g) 7045.3 5152.9 1892.4
Trial #3 (g) 7046.9 5152.9 1894.0
Wt. of Sand in Cone (g): 1893.2
Field Data Date: 11/4/2009
Wt. of Wet Soil + Pan (g) 856.8
Wt. of Dry Soil + Pan (g) 725.3
Wt. of Pan (g) 14.5
Wt. of Wet Soil, W' (g) 842.3
Wt. of Dry Soil (g) 710.8
Wt. of Water (g) 131.5
Water Content, w (%) 0.185
Sand Used: Pool Filter Sand
Unit Wt. of Sand, ɣsand (g/cm3) = 1.53
Wt. of Jug & Cone Before (g) = 7046.08
Wt. of Jug & Cone After (g) = 4450.06
Wt. of Sand Used (g) = 2596.02
Wt. of Sand in Cone (g) = 1893.17
Wt. of Sand in Hole, W (g) = 702.85
Volume of hole, Vh (cm3) = W / ɣsand = 460.17
Wet density, ɣwet = W' / Vh (kN/m3) = 1.83
Wet density, ɣwet = W' / Vh (lb/ft3) = 114.17
Dry density, ɣdry = ɣwet / [1 + w] (kN/m3) = 1.54
Wet density, ɣwet = W' / Vh (lb/ft3) = 96.34
Max Std. Proctor Dry density (kN/m3) = 104.40
Opt. Moisture via Std. Proctor density (%) = 20.10
Compaction as % of Std. Proctor = 92.3%
Density Calculation:
Compaction Worksheet
ASTM D 1556
Volume Data:
Soil Data:
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
Appendix
APPENDIX C – RAINFALL DATA
Raindrop Size Distribution
Rainfall Calibration
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
2 4 6
% o
f R
ain
dro
ps
by
Mas
s
Rainfall Intensity, in/hr
Raindrop Size DistributionMarch 2011
0.21 - 0.425 mm 0.425 - 1.0 mm 1.0 - 2.0 mm 2.0 - 4.75 mm 4.75 - 6 mm
Target raindrop size and distribution (no more than 10 % greater than 6 mm (0.24 in.) and no more than 10 % smaller than 1 mm (0.04 in.)).
Date: 15-Mar-11 Start Time: 10:00 AM End Time: 10:15 AM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
x d = 12 mm d = 12 mm
X P = 12 psi i = 1.89 in/hr B i = 1.89 in/hr
x d = 14 mm d = 12 mm x
x i = 2.20 in/hr C i = 1.89 in/hr P = 12 psi X
x d = 15 mm d = 15 mm x
X P = 12 psi i = 2.36 in/hr D i = 2.36 in/hr x
x d = 15 mm d = 15 mm x
x i = 2.36 in/hr E i = 2.36 in/hr P = 12 psi x
x d = 12 mm d = 14 mm X
X P = 12 psi i = 1.89 in/hr F i = 2.20 in/hr x
x d = 14 mm d = 13 mm x
x i = 2.20 in/hr G i = 2.05 in/hr P = 12 psi x
x d = 11 mm d = 13 mm X
x P = 12 psi i = 1.73 in/hr H i = 2.05 in/hr x
X d = 12 mm d = 13 mm x
x i = 1.89 in/hr I i = 2.05 in/hr P = 12 psi X
x d = 11 mm d = 13 mm X
X P = 12 psi i = 1.73 in/hr J i = 2.05 in/hr x
X d = 11 mm d = 11 mm
x i = 1.73 in/hr i = 1.73 in/hr
Bottom Catch: 60 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 12.90 mm
Average Rainfall Intensity: 2.03 in/hr
Christiansen Uniformity Coefficient: 91
18
5 6
4
7 8
9 10
3
11 12
19 20
13
15 16
17
14
Rainfall Calibration
TOP OF SLOPE
DDRF
Slope 1 - Target 2 in/hr
x x X x
1 2
A
Date: 15-Mar-11 Start Time: 10:30 AM End Time: 10:45 AM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
X d = 24 mm d = 24 mm
X P = 12 psi i = 3.78 in/hr B i = 3.78 in/hr
x d = 25 mm d = 24 mm X
x i = 3.94 in/hr C i = 3.78 in/hr P = 12 psi X
X d = 27 mm d = 25 mm x
X P = 12 psi i = 4.25 in/hr D i = 3.94 in/hr x
x d = 25 mm d = 27 mm X
x i = 3.94 in/hr E i = 4.25 in/hr P = 12 psi X
x d = 27 mm d = 27 mm x
x P = 12 psi i = 4.25 in/hr F i = 4.25 in/hr x
X d = 25 mm d = 28 mm x
X i = 3.94 in/hr G i = 4.41 in/hr P = 12 psi x
x d = 24 mm d = 27 mm X
x P = 12 psi i = 3.78 in/hr H i = 4.25 in/hr X
X d = 25 mm d = 26 mm x
X i = 3.94 in/hr I i = 4.09 in/hr P = 12 psi X
x d = 27 mm d = 25 mm X
X P = 12 psi i = 4.25 in/hr J i = 3.94 in/hr X
X d = 24 mm d = 24 mm
X i = 3.78 in/hr i = 3.78 in/hr
Bottom Catch: 125 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 25.50 mm
Average Rainfall Intensity: 4.02 in/hr
Christiansen Uniformity Coefficient: 95
TOP OF SLOPE
DDRF
Rainfall Calibration
7 8
9 10
3 4
2
11 12
19 20
13 14
Slope 1 - Target 4 in/hr
18
5 6
A
15 16
17
x x X X
1
Date: 15-Mar-11 Start Time: 11:00 AM End Time: 11:15 AM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
X d = 36 mm d = 38 mm
X P = 12 psi i = 5.67 in/hr B i = 5.98 in/hr
X d = 38 mm d = 37 mm X
x i = 5.98 in/hr C i = 5.83 in/hr P = 12 psi X
X d = 40 mm d = 38 mm X
X P = 12 psi i = 6.30 in/hr D i = 5.98 in/hr x
X d = 40 mm d = 39 mm X
x i = 6.30 in/hr E i = 6.14 in/hr P = 12 psi X
X d = 42 mm d = 42 mm X
X P = 12 psi i = 6.61 in/hr F i = 6.61 in/hr x
X d = 39 mm d = 38 mm x
x i = 6.14 in/hr G i = 5.98 in/hr P = 12 psi X
x d = 37 mm d = 41 mm X
X P = 12 psi i = 5.83 in/hr H i = 6.46 in/hr X
X d = 38 mm d = 39 mm X
X i = 5.98 in/hr I i = 6.14 in/hr P = 12 psi X
X d = 39 mm d = 39 mm X
X P = 12 psi i = 6.14 in/hr J i = 6.14 in/hr X
X d = 34 mm d = 37 mm
X i = 5.35 in/hr i = 5.83 in/hr
Bottom Catch: 190 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 38.55 mm
Average Rainfall Intensity: 6.07 in/hr
Christiansen Uniformity Coefficient: 96
18
5 6
4
7 8
9 10
3
11 12
19 20
13
15 16
17
14
Slope 1 - Target 6 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
x X X X
1 2
A
Date: 15-Mar-11 Start Time: 11:30 AM End Time: 11:45 AM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
d = 11 mm d = 12 mm x
i = 1.73 in/hr B i = 1.89 in/hr P = 12 psi X
x d = 12 mm d = 14 mm x
X P = 12 psi i = 1.89 in/hr C i = 2.20 in/hr x
x d = 12 mm d = 13 mm x
x i = 1.89 in/hr D i = 2.05 in/hr P = 12 psi X
x d = 14 mm d = 14 mm x
X P = 12 psi i = 2.20 in/hr E i = 2.20 in/hr x
x d = 15 mm d = 15 mm x
x i = 2.36 in/hr F i = 2.36 in/hr P = 12 psi x
x d = 14 mm d = 15 mm X
x P = 12 psi i = 2.20 in/hr G i = 2.36 in/hr x
X d = 15 mm d = 14 mm x
x i = 2.36 in/hr H i = 2.20 in/hr P = 12 psi x
x d = 13 mm d = 13 mm X
x P = 12 psi i = 2.05 in/hr I i = 2.05 in/hr x
X d = 12 mm d = 12 mm x
X i = 1.89 in/hr J i = 1.89 in/hr P = 12 psi x
d = 12 mm d = 11 mm X
i = 1.89 in/hr i = 1.73 in/hr X
Bottom Catch: 60 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 13.15 mm
Average Rainfall Intensity: 2.07 in/hr
Christiansen Uniformity Coefficient: 91
TOP OF SLOPE
DDRF
Rainfall Calibration
7 8
9 10
3 4
2
11 12
19 20
13 14
Slope 2 - Target 2 in/hr
18
5 6
A
15 16
17
x x X x
1
Date: 15-Mar-11 Start Time: 12:00 PM End Time: 12:15 PM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
d = 21 mm d = 24 mm X
i = 3.31 in/hr B i = 3.78 in/hr P = 12 psi X
X d = 23 mm d = 26 mm x
X P = 12 psi i = 3.62 in/hr C i = 4.09 in/hr x
x d = 24 mm d = 27 mm X
x i = 3.78 in/hr D i = 4.25 in/hr P = 12 psi X
X d = 26 mm d = 27 mm x
X P = 12 psi i = 4.09 in/hr E i = 4.25 in/hr x
x d = 27 mm d = 27 mm x
x i = 4.25 in/hr F i = 4.25 in/hr P = 12 psi x
x d = 26 mm d = 28 mm X
x P = 12 psi i = 4.09 in/hr G i = 4.41 in/hr X
X d = 26 mm d = 27 mm x
X i = 4.09 in/hr H i = 4.25 in/hr P = 12 psi x
x d = 25 mm d = 27 mm X
X P = 12 psi i = 3.94 in/hr I i = 4.25 in/hr X
X d = 25 mm d = 25 mm x
X i = 3.94 in/hr J i = 3.94 in/hr P = 12 psi X
d = 24 mm d = 24 mm X
i = 3.78 in/hr i = 3.78 in/hr X
Bottom Catch: 125 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 25.45 mm
Average Rainfall Intensity: 4.01 in/hr
Christiansen Uniformity Coefficient: 94
18
5 6
4
7 8
9 10
3
11 12
19 20
13
15 16
17
14
Slope 2 - Target 4 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
x x X X
1 2
A
Date: 15-Mar-11 Start Time: 12:30 PM End Time: 12:45 PM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
d = 34 mm d = 36 mm X
i = 5.35 in/hr B i = 5.67 in/hr P = 12 psi X
X d = 36 mm d = 36 mm X
X P = 12 psi i = 5.67 in/hr C i = 5.67 in/hr x
X d = 39 mm d = 41 mm X
x i = 6.14 in/hr D i = 6.46 in/hr P = 12 psi X
X d = 38 mm d = 42 mm X
X P = 12 psi i = 5.98 in/hr E i = 6.61 in/hr x
X d = 38 mm d = 40 mm x
x i = 5.98 in/hr F i = 6.30 in/hr P = 12 psi X
x d = 41 mm d = 40 mm X
X P = 12 psi i = 6.46 in/hr G i = 6.30 in/hr X
X d = 40 mm d = 41 mm x
X i = 6.30 in/hr H i = 6.46 in/hr P = 12 psi X
X d = 40 mm d = 38 mm X
X P = 12 psi i = 6.30 in/hr I i = 5.98 in/hr X
X d = 38 mm d = 37 mm X
X i = 5.98 in/hr J i = 5.83 in/hr P = 12 psi X
d = 37 mm d = 34 mm X
i = 5.83 in/hr i = 5.35 in/hr X
Bottom Catch: 195 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 38.3 mm
Average Rainfall Intensity: 6.03 in/hr
Christiansen Uniformity Coefficient: 95
TOP OF SLOPE
DDRF
Rainfall Calibration
7 8
9 10
3 4
2
11 12
19 20
13 14
Slope 2 - Target 6 in/hr
18
5 6
A
15 16
17
x X X X
1
Date: 15-Mar-11 Start Time: 2:30 PM End Time: 2:45 PM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
d = 11 mm d = 11 mm X
i = 1.73 in/hr B i = 1.73 in/hr P = 12 psi X
x d = 12 mm d = 12 mm x
X P = 12 psi i = 1.89 in/hr C i = 1.89 in/hr x
x d = 14 mm d = 12 mm x
x i = 2.20 in/hr D i = 1.89 in/hr P = 12 psi X
x d = 15 mm d = 14 mm x
X P = 12 psi i = 2.36 in/hr E i = 2.20 in/hr x
x d = 15 mm d = 14 mm x
x i = 2.36 in/hr F i = 2.20 in/hr P = 12 psi x
x d = 14 mm d = 15 mm X
x P = 12 psi i = 2.20 in/hr G i = 2.36 in/hr x
X d = 15 mm d = 14 mm x
x i = 2.36 in/hr H i = 2.20 in/hr P = 12 psi x
x d = 14 mm d = 13 mm X
x P = 12 psi i = 2.20 in/hr I i = 2.05 in/hr x
X d = 12 mm d = 12 mm x
X i = 1.89 in/hr J i = 1.89 in/hr P = 12 psi x
d = 11 mm d = 11 mm X
i = 1.73 in/hr i = 1.73 in/hr X
Bottom Catch: 55 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 13.05 mm
Average Rainfall Intensity: 2.06 in/hr
Christiansen Uniformity Coefficient: 90
18
5 6
4
7 8
9 10
3
11 12
19 20
13
15 16
17
14
Slope 3 - Target 2 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
x x X X
1 2
A
Date: 15-Mar-11 Start Time: 3:00 PM End Time: 3:15 PM
Test Time: 15 min. (circle "x" for open valves)
P = 12 psi
d = 22 mm d = 24 mm X
i = 3.46 in/hr B i = 3.78 in/hr P = 12 psi X
X d = 24 mm d = 25 mm x
X P = 12 psi i = 3.78 in/hr C i = 3.94 in/hr x
x d = 25 mm d = 27 mm X
x i = 3.94 in/hr D i = 4.25 in/hr P = 12 psi X
X d = 27 mm d = 27 mm x
X P = 12 psi i = 4.25 in/hr E i = 4.25 in/hr x
x d = 28 mm d = 28 mm x
x i = 4.41 in/hr F i = 4.41 in/hr P = 12 psi x
x d = 28 mm d = 28 mm X
x P = 12 psi i = 4.41 in/hr G i = 4.41 in/hr X
X d = 27 mm d = 25 mm x
X i = 4.25 in/hr H i = 3.94 in/hr P = 12 psi x
x d = 27 mm d = 24 mm X
X P = 12 psi i = 4.25 in/hr I i = 3.78 in/hr X
X d = 24 mm d = 24 mm x
X i = 3.78 in/hr J i = 3.78 in/hr P = 12 psi X
d = 22 mm d = 23 mm X
i = 3.46 in/hr i = 3.62 in/hr X
Bottom Catch: 125 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 25.45 mm
Average Rainfall Intensity: 4.01 in/hr
Christiansen Uniformity Coefficient: 93
TOP OF SLOPE
DDRF
Rainfall Calibration
7 8
9 10
3 4
2
11 12
19 20
13 14
Slope 3 - Target 4 in/hr
18
5 6
A
15 16
17
x x X X
1
Date: 15-Mar-11 Start Time: 3:30 PM End Time: 3:45 PM
Test Time: 15.00 min. (circle "x" for open valves)
P = 12 psi
d = 34 mm d = 37 mm X
i = 5.35 in/hr B i = 5.83 in/hr P = 12 psi X
X d = 37 mm d = 39 mm X
X P = 12 psi i = 5.83 in/hr C i = 6.14 in/hr x
X d = 38 mm d = 40 mm X
x i = 5.98 in/hr D i = 6.30 in/hr P = 12 psi X
X d = 39 mm d = 41 mm X
X P = 12 psi i = 6.14 in/hr E i = 6.46 in/hr x
X d = 42 mm d = 40 mm x
x i = 6.61 in/hr F i = 6.30 in/hr P = 12 psi X
x d = 41 mm d = 41 mm X
X P = 12 psi i = 6.46 in/hr G i = 6.46 in/hr X
X d = 40 mm d = 39 mm x
X i = 6.30 in/hr H i = 6.14 in/hr P = 12 psi X
X d = 40 mm d = 38 mm X
X P = 12 psi i = 6.30 in/hr I i = 5.98 in/hr X
X d = 39 mm d = 35 mm X
X i = 6.14 in/hr J i = 5.51 in/hr P = 12 psi X
d = 37 mm d = 34 mm X
i = 5.83 in/hr i = 5.35 in/hr X
Bottom Catch: 200 gal
Inlet Pressure: 24 psi
Average Wind: 0 mph
Average Depth: 38.55 mm
Average Rainfall Intensity: 6.07 in/hr
Christiansen Uniformity Coefficient: 95
18
5 6
4
7 8
9 10
3
11 12
19 20
13
15 16
17
14
Slope 3 - Target 6 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
x X X X
1 2
A
ANTI-WASH / GEOJUTE, over Sandy Loam
Slope Erosion Testing for NTPEP
April 29, 2011
Appendix
APPENDIX D – ANCHORAGE PATTERN
x x x x
x x
x 4 ft x x
x x
x 4ft x x
x x
x x x
x x
x x x
x x
1.5 staples/syx x x
x x
x x x
x x
x x x
x x
x x x
x x
x x x
x x
x x x x