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Large-Scale Slope Erosion Testing
(ASTM D 6459)
of
Winters Excelsior’s Straw Bio,
Double Biodegradable Net Straw Blanket
over
Loam
June 2014
Submitted to:
AASHTO/NTPEP
444 North Capitol Street, NW, Suite 249
Washington, D.C. 20001
Attn: Russell Dabbs, NTPEP
rdabbs@aashto.org
Submitted by:
TRI/Environmental, Inc.
9063 Bee Caves Road
Austin, TX 78733
C. Joel Sprague
Project Manager
June 30, 2014
Mr. Russell Dabbs AASHTO/NTPEP
444 North Capitol Street, NW, Suite 249
Washington, D.C. 20001
E-mail: rdabbs@aashto.org
Subject: Large-scale Slope Testing over Loam of Straw Bio, Double Biodegradable Net Straw
Blanket, manufactured in Hutchinson, KS
Dear Mr. Dabbs:
This letter report presents the results for large-scale slope erosion tests performed on Straw Bio,
Double Biodegradable Net Straw Blanket, rolled erosion control product (RECP), over 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 Straw Bio & 1.7 staples/sy = 0.064 for cumulative R-Factor < 162;
Eqn: C = 0.00001925R1.59408157
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, Jay Sprague - TRI
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
2
SLOPE TESTING REPORT
Straw Bio, Double Biodegradable Net Straw Blanket, over 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 - Straw Bio
Manufacturer - Winters Excelsior
Manufacturing Plant Location - Hutchinson, KS
Lot number of sample - -
Fiber - 100% Straw
Netting Openings in 0.5 x 0.5 (approx)
Stitching Spacing in (approx)
Tensile Strength MD x XD (ASTM D 6818)* lb/in 11.5 x 13.3
Tensile Elongation MD x XD (ASTM D 6818)* % 14.5 x 13.6
Thickness (ASTM D 6525)* mils 336
Light Penetration (ASTM D 6567)* % cover 90.8
Water Absorption (ASTM D 1117 & ECTC-TASC 00197)* % Wt
Change 366
Mass / Unit Area (ASTM D 6475)* oz/sy 9.43 * Values from Independent Testing of Randomly Sampled Product
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
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 Loam
Soil Classification USCS Sandy silty clay (ML-CL)
K-Factor D6459 0.123
Preparation of the Test Slopes
The initial slope soil veneer (12-inch thick minimum) is placed and compacted. Compaction is
verified to be 90% (± 3%) of Proctor Standard density using ASTM D 2937 (drive-cylinder method).
Subsequently, 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 6-inch staples at 1.7 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.
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
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.
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
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 Even
Figure 5d. Test Slope #1 –
RECP Removed
Figure 6a. Test Slope #2 –
Start of the 2 in/hr Event
Figure 6b. Test Slope #2 –
End of the 4 in/hr Event
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
6
Figure 6c. Test Slope #2 –
End of 6 in/hr Event
Figure 6d. Test Slope #2 –
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 –
RECP Removed
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
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 assuming all raindrops achieve terminal velocity.
Since this is not the case, the R-Factor must be “scaled” to reflect the kinetic energy associated with
the actual velocity achieved by each size of raindrop. For the tests reported herein, the C-Factor
associated with this scaled R-Factor of 162 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= 0.88), and polynomial (R
2 = 0.70) fits were the best fits 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.
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
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 – Straw Bio
1-2 2.05 6.84 6.74 0.034 0.002 2.311 0.0010
1-4 4.02 103.03 51.16 7.492 0.513 17.528 0.0292
1-6 6.06 224.85 165.86 53.360 4.148 56.824 0.0730
2 – Straw Bio
2-2 2.05 1.17 6.74 0.004 0.000 2.311 0.0001
2-4 4.09 95.19 52.66 3.184 0.217 18.043 0.0120
2-6 5.98 192.96 165.07 18.834 1.500 56.552 0.0265
3 – Straw Bio
3-2 2.17 2.20 7.60 0.012 0.001 2.605 0.0003
3-4 4.09 113.58 54.40 7.642 0.521 18.637 0.0280
3-6 5.98 232.13 166.82 26.422 2.321 57.151 0.0406
Table 4. Overall C-Factor
Product C-Factor Calculation
Straw Bio, Double Biodegradable Net
Straw Blanket & 1.7 staples/sy 0.064 C = 0.00001925R
1.59408157
C = 0.00001925R1.59408157
R² = 0.87510052
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0 20 40 60 80 100 120 140 160 180 200
C-F
acto
r
R-Factor
C-Factor vs. R-Factor(Straw Bio @ 1.7 staples/sy on TRI-Loam; 3:1 Slope)
All Slopes - SCALED Power (All Slopes - SCALED)
"SCALED" FOR K.E.: 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 = 162 and the associated C-Factor is determined from the best-fit regression eqn.
C-Factor = 0.064 for R-Factor = 162
Figure 8. R-Factor vs. C-Factor – Tested Product
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
9
y = 0.2409xR² = 0.9527
y = 0.3426xR² = 1
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
0 50 100 150 200 250 300
So
il L
os
s (
T/A
)
RUSLE R (US Customary Units)
Soil Loss vs RUSLE R (Control Testing of TRI-Loam; 3:1 Slope; 2009-2014: 40 tests)
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 = 0.3426 / 2.78 = 0.123
Scaled Because Terminal Velocity Not Achieved: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 = 162 and the associated soil loss is 55.5 tons/acre
If Terminal Velocity Achieved:The cummulative R-Factor vs. Soil Loss is initially plotted as though terminal velocity of the raindrops is achieved. This produces an R = 231 and the associated soil loss is 55.5 tons/acre
Figure 9. R-Factor vs. Soil Loss – Control Tests
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
Appendix
APPENDIX A – RECORDED DATA
Test Record Sheets
Sediment Concentration Data
Runoff Data
Soil Moisture Content
Soil Loss Tables
# Time
Start Rain: 8:35 AM 1 8:38 X
Sampling interval: 0:03 2 8:41 X
Rain Time: 20.00 Test Time: 1.00 3 8:44 X
Descr:. Double Net Straw Blanket 4 8:47 X
Anchors: Anchorage: 1.7 / sy 5 8:50 X
6 8:53 X
wc1 = 18.5% 7
d = 18 mm 8
i = 2.13 in/hr P = 9 psi 9
10
x 11
B P = 9 psi X 10
x x 13
X P = 9 psi C x 14
x x 15
x D P = 9 psi X 10
x x 13
X P = 9 psi E x 14
x x 15
x F P = 9 psi X
x x
x P = 9 psi G x # Time
Time to Collect 1
gal, sec
X x 1 3 180
x H P = 9 psi x 2 6 180
x X 3 9 140
x P = 9 psi I x 4 12 128
X x 5 15 98
X J P = 9 psi x 6 18 94
X 7
X 8
d = 17 mm 9
i = 20.00 in/hr Temp. 78 deg 10
wc3 = 16.8% Hum. 74 % 11
d = 17 in 10
i = 2.01 in/hr Average Depth: in. 13
wc2 = 18.2% Avg Rainfall Intensity: in/hr 14
15
10
13
14
15
Notes:0 mph breeze.Approx 10 gal collected.
0.68
2.05
Slope #: 1 Target Rain: 2 in/hr
SLOPE #1
A
DDRF Rainfall Testing
8:36 AM
x X x x
Roll #:
Date:
Product:
12-Jun-14
Set system pressure to 16
psi.
0001091 6 in Staples
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 8:55 AM
(circle "x" for open valves)
End Runoff:
Winters Straw Bio
# Time
Start Rain: 9:02 AM 1 9:04 X
Sampling interval: 0:02 2 9:06 X
Rain Time: 20.00 Test Time: 21.00 3 9:08 X
Descr:. Double Net Straw Blanket 4 9:10 X
Anchors: Anchorage: 1.7 / sy 5 9:12 X
6 9:14 X
wc1 = 18.5% 7 9:16 X
d = 34 mm 8 9:18 X
i = 4.02 in/hr P = 9 psi 9 9:20 X
10 9:22 X
X 11
B P = 9 psi X 10
X x 13
X P = 9 psi C x 14
x X 15
x D P = 9 psi X 10
X x 13
X P = 9 psi E x 14
x X 15
x F P = 9 psi X
x x
x P = 9 psi G x # Time
Time to Collect 1
gal, sec
X x 1 2 32
X H P = 9 psi x 2 6 12
x X 3 8 12
X P = 9 psi I X 4 10 11
X x 5 12 11
X J P = 9 psi X 6 14 11
X 7 16 11
X 8 18 10
d = 34 mm 9 20 10
i = 4.02 in/hr Temp. 78 deg 10
wc3 = 16.8% Hum. 79 % 11
d = 34 mm 10
i = 4.02 in/hr Average Depth: in. 13
wc2 = 18.2% Avg Rainfall Intensity: in/hr 14
15
10
13
14
15
Notes:0 mph breeze. Approx 105 gal collected.
1.34
4.02
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Date:
SLOPE #1
Slope #: 1 Target Rain: 4 in/hr
End Rain: 9:22 AM
9:23 AM
A
DDRF Rainfall Testing
12-Jun-14
Roll #:
Product: Winters Straw Bio
End Runoff:
TOP OF SLOPE
Set system pressure to 16
psi.
0001091 6 in Staples
(circle "x" for open valves)
X X x x
Runoff Rate Measurements
# Time
Start Rain: 9:28 AM 1 9:30 X
Sampling interval: 0:02 2 9:32 X
Rain Time: 20.00 Test Time: 22.00 3 9:34 X
Descr:. Double Net Straw Blanket 4 9:36 X
Anchors: Anchorage: 1.7 / sy 5 9:38 X
6 9:40 X
wc1 = 18.5% 7 9:42 X
d = 53 mm 8 9:44 X
i = 6.26 in/hr P = 9 psi 9 9:46 X
10 9:48 X
X 11
B P = 9 psi X 10
X X 13
X P = 9 psi C x 14
X X 15
x D P = 9 psi X 10
X X 13
X P = 9 psi E x 14
X X 15
x F P = 9 psi X
x X
X P = 9 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 2 10
X H P = 9 psi X 2 4 7
X X 3 6 6
X P = 9 psi I X 4 8 6
X X 5 10 5
X J P = 9 psi X 6 12 5
X 7 14 5
X 8 16 5
d = 51 mm 9 18 5
i = 6.02 in/hr Temp. 77 deg 10 20 5
wc3 = 16.8% Hum. 79 % 11
d = 50 mm 10
i = 5.91 in/hr Average Depth: in. 13
wc2 = 18.2% Avg Rainfall Intensity: in/hr 14
15
10
13
14
15
Roll #:
End Runoff:
Product: Winters Straw Bio
Set system pressure to 16
psi.
6 in Staples0001091
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
DDRF Rainfall Testing
Date: 12-Jun-14
Slope #: 1 Target Rain: 6 in/hr
SLOPE #1
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 9:48 AM
A
X X X x
(circle "x" for open valves)
9:50 AM
Notes:0 mph breeze.Approx 225 gal collected.
2.02
6.06
# Time
Start Rain: 10:00 AM 1 10:03 X
Sampling interval: 0:03 2 10:06 X
Rain Time: 20.00 Test Time: 20.00 3 10:09 X
Descr:. Double Net Straw Blanket 4 10:12 X
Anchors: Anchorage: 1.7 / sy 5 10:15 X
6 10:18 X
wc1 = 16.4% 7
d = 18 mm 8
i = 2.13 in/hr P = 9 psi 9
10
x 11
X P = 9 psi B 10
x x 13
x C P = 9 psi X 14
x x 15
X P = 9 psi D x 10
x x 13
x E P = 9 psi X 14
x x 15
X P = 9 psi F x
x x
x G P = 9 psi x # Time
Time to Collect 1
Gallon, sec
x X 1 3 1080
x P = 9 psi H x 2
X x 3
x I P = 9 psi x 4
x X 5
x P = 9 psi J X 6
X 7
X 8
d = 17 mm 9
i = 2.01 in/hr Temp. 79 deg 10
wc2 = 17.6% Hum. 85 % 11
d = 17 mm 10
i = 2.01 in/hr Average Depth: in. 13
wc3 = 16.6% Avg Rainfall Intensity: in/hr 14
15
10
13
14
15
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 10:20 AM
Slope #: 2
A
Set system pressure to 16
psi.
DDRF Rainfall Testing
(circle "x" for open valves)
End Runoff:
Notes:0 mph breeze from the .Approx 1 gal collected.
0.68
2.05
0001092 6 in Staples
Winters Straw Bio
x x X x
SLOPE #2
10:20 AM
Target Rain: 2 in/hr
Date:
Product:
12-Jun-14
Roll #:
# Time
Start Rain: 10:26 AM 1 10:28 X
Sampling interval: 0:02 2 10:30 X
Rain Time: 20.00 Test Time: 22.00 3 10:32 X
Descr:. Double Net Straw Blanket 4 10:34 X
Anchors: Anchorage: 1.7 / sy 5 10:36 X
6 10:38 X
wc1 = 16.4% 7 10:40 X
d = 34 mm P = 9 psi 8 10:42 X
i = 4.02 in/hr 9 10:44 X
X 10 10:46 X
X P = 9 psi B 11
x X 10
x C P = 9 psi X 13
X x 14
X P = 9 psi D x 15
x X 10
x E P = 9 psi X 13
x x 14
X P = 9 psi F x 15
X x
x G P = 9 psi X
x X # Time
Time to Collect 1
Gallon, sec
x P = 9 psi H x 1 2 26
X x 2 4 13
X I P = 9 psi X 3 6 13
x X 4 8 13
X P = 9 psi J X 5 10 13
X 6 12 13
X 7 14 12
d = 36 mm 8 16 12
i = 4.25 in/hr 9 18 12
wc2 = 17.6% Temp. 80 deg 10 20 12
d = 34 mm Hum. 84 % 11
i = 4.02 in/hr 10
wc3 = 16.6% Average Depth: in. 13
Avg Rainfall Intensity: in/hr 14
15
10
13
14
15
6 in Staples
Notes:0 mph breeze. Approx. 90 gal collected.
1.36
4.09
Roll #:
Product: Winters Straw Bio
0001092
DDRF Rainfall Testing Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Date:
SLOPE #2
Slope #: 2 Target Rain: 4 in/hr
12-Jun-14
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 10:46 AM
End Runoff: 10:48 AM
X X x xSet system pressure to 16
psi.
A
# Time
Start Rain: 10:52 AM 1 10:54 X
Sampling interval: 0:02 2 10:56 X
Rain Time: 20.00 Test Time: 22.00 3 10:58 X
Descr:. Double Net Straw Blanket 4 11:00 X
Anchors: Anchorage: 1.7 / sy 5 11:02 X
6 11:04 X
wc1 = 16.4% 7 11:06 X
d = 51 mm 8 11:08 X
i = 6.02 in/hr P = 9 psi 9 11:10 X
10 11:12 X
X 11
X P = 9 psi B 10
X X 13
x C P = 9 psi X 14
X X 15
X P = 9 psi D x 10
X X 13
x E P = 9 psi X 14
X X 15
X P = 9 psi F x
X x
x G P = 9 psi X # Time
Time to Collect 1
Gallon, sec
x X 1 2 9
X P = 9 psi H X 2 4 9
X X 3 6 8
X I P = 9 psi X 4 8 7
X X 5 10 7
X P = 9 psi J X 6 12 7
X 7 14 6
X 8 16 6
d = 51 mm 9 18 5
i = 6.02 in/hr Temp. 80 deg 10 20 5
wc2 = 17.6% Hum. 85 % 11
d = 50 mm 10
i = 5.91 in/hr Average Depth: in. 13
wc3 = 16.6% Avg Rainfall Intensity: in/hr 14
15
10
13
14
15
0001092 6 in Staples
Set system pressure to 16
psi.
(circle "x" for open valves)
A
Slope #: 2 Target Rain: 6 in/hr
End Runoff: 11:14 AM
SLOPE #2
12-Jun-14
Notes:0 mph breeze.Approx 190 gal collected.
1.99
5.98
X X X x
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 11:12 AM
DDRF Rainfall Testing
Date:
Product:
Roll #:
Winters Straw Bio
# Time X
Start Rain: 11:24 AM 1 11:27 X
Sampling interval: 0:03 2 11:30 X
Rain Time: 20.00 Test Time: 20.00 3 11:33 X
Descr:. Double Net Straw Blanket 4 11:36 X
Anchors: Anchorage: 1.7 / sy 5 11:39 X
6 11:42 X
wc1 = 17.6% 7
d = 18 mm 8
i = 2.13 in/hr P = 9 psi 9
10
x 11
B P = 9 psi X 10
x x 13
X P = 9 psi C x 14
x x 15
x D P = 9 psi X 10
x x 13
X P = 9 psi E x 14
x x 15
x F P = 9 psi X
x x
x P = 9 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 3 584
x H P = 9 psi x 2 12 420
x X 3
x P = 9 psi I x 4
X x 5
X J P = 9 psi x 6
X 7
X 8
d = 20 mm 9
i = 2.36 in/hr * Temp. 86 deg 10
wc3 = 16.8% Hum. 84 % 11
d = 17 mm 10
i = 2.01 in/hr Average Depth: in. 13
wc2 = 17.2% Avg Rainfall Intensity: in/hr 14
15
0.72
(circle "x" for open valves)
0001093 6 in Staples
A
x X x x
TOP OF SLOPE
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
End Rain:
DDRF Rainfall Testing
Slope #: 3
Date: 11:44 AM
Product:
SLOPE #3
Target Rain: 2 in/hr
Set system pressure to 16
psi.
End Runoff: 11:44 AM
Runoff Rate Measurements
12-Jun-14
Winters Straw Bio
Notes:0 mph breeze from the .Approx 3 gal collected.
Roll #:
2.17
# Time
Start Rain: 11:51 AM 1 11:53 X
Sampling interval: 0:02 2 11:55 X
Rain Time: 20.00 Test Time: 21.00 3 11:57 X
Descr:. Double Net Straw Blanket 4 11:59 X
Anchors: Anchorage: 1.7 / sy 5 12:01 X
6 12:03 X
wc1 = 17.6% 7 12:05 X
d = 34 mm 8 12:07 X
i = 4.02 in/hr P = 9 psi 9 12:09 X
10 12:11 X
X 11
B P = 9 psi X 10
X x 13
X P = 9 psi C x 14
x X 15
x D P = 9 psi X 10
X x 13
X P = 9 psi E x 14
x X 15
x F P = 9 psi X
x x
x P = 9 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 2 15
X H P = 9 psi x 2 4 11
x X 3 6 11
X P = 9 psi I X 4 8 11
X x 5 10 11
X J P = 9 psi X 6 12 11
X 7 14 10
X 8 16 10
d = 36 mm 9 18 10
i = 4.25 in/hr Temp. 88 deg 10 20 10
wc3 = 16.8% Hum. 77 % 11
d = 34 mm 10
i = 4.02 in/hr Average Depth: in. 13
wc2 = 17.2% Avg Rainfall Intensity: in/hr 14
15
Set system pressure to 16
psi.
Winters Straw Bio
X X x x
A
0001093 6 in Staples
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
End Runoff: 12:12 PM
(circle "x" for open valves)
SLOPE #3
Slope #: 3 Target Rain: 4 in/hr
TOP OF SLOPE
Product:
Roll #:
DDRF Rainfall Testing
12-Jun-14 End Rain:
Runoff Rate Measurements
12:11 PM
Notes:0 mph breeze.Approx 120 gal collected.
1.36
4.09
Date:
# Time
Start Rain: 1 12:17 X
Sampling interval: 0:02 2 12:19 X
Rain Time: 20.00 Test Time: 22.00 3 12:21 X
Descr:. Double Net Straw Blanket 4 12:23 X
Anchors: Anchorage: 1.7 / sy 5 12:25 X
6 12:27 X
wc1 = 17.6% 7 12:29 X
d = 51 mm 8 12:31 X
i = 6.02 in/hr P = 9 psi 9 12:33 X
10 12:35 X
X 11
B P = 9 psi X 10
X X 13
X P = 9 psi C x 14
X X 15
x D P = 9 psi X 10
X X 13
X P = 9 psi E x 14
X X 15
x F P = 9 psi X
x X
X P = 9 psi G x # Time
Time to Collect 1
Gallon, sec
X x 1 2 8
X H P = 9 psi X 2 4 7
X X 3 6 6
X P = 9 psi I X 4 8 5
X X 5 10 5
X J P = 9 psi X 6 12 5
X 7 14 5
X 8 16 5
d = 51 mm 9 18 5
i = 6.02 in/hr Temp. 88 deg 10 20 5
wc3 = 16.8% Hum. 78 % 11
d = 50 mm 10
i = 5.91 in/hr Average Depth: in. 13
wc2 = 17.2% Avg Rainfall Intensity: in/hr 14
15
10
13
14
15
Product:
Roll #:
A
0001093 6 in Staples
Slope #: 3 Target Rain: 6 in/hr
Notes:0 mph breeze.Approx 235 gal collected.
1.99
5.98
12-Jun-14
Winters Straw Bio
Sediment Concentration Grab
Samples Followed by Runoff Rate
Measurements
Runoff Rate Measurements
TOP OF SLOPE
End Rain: 12:35 PM
12:37 PMEnd Runoff:
(circle "x" for open valves)Set system pressure to 16
psi.X X X x
DDRF Rainfall Testing
Date:
SLOPE #3
12:15 PM
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
2.05 in/hr avg
12-Jun-14 2-1 3.00 340.48 150.18 149.23 950.00 190.30 0.19 4992.12 3.00 180 2.00 6482.47 0.11
2-2 6.00 354.71 154.17 151.47 2700.00 200.54 0.20 13463.65 6.00 180 1.00 0.00
2-3 9.00 358.31 152.04 150.43 1610.00 206.27 0.21 7805.30 9.00 140 1.00 0.00
2-4 12.00 364.09 147.25 146.44 810.00 216.84 0.22 3735.47 12.00 128 1.31 0.00
2-5 15.00 370.91 148.58 147.54 1040.00 222.33 0.22 4677.73 15.00 98 1.53 0.00
2-6 18.00 370.93 150.58 149.65 930.00 220.35 0.22 4220.56 18.00 94 1.87 0.00
0.00 AVG = 6482.47 15.00 98 1.53 4220.56 0.05
4.02 in/hr avg 0.00 Total Solids Lost: 0.16
12-Jun-14 4-1 2.00 381.56 151.12 150.66 460.00 230.44 0.23 1996.18 2.00 32 4.75 4081.54 0.16
4-2 4.00 381.11 152.47 151.06 1410.00 228.64 0.23 6166.90 6.00 12 18.33 6866.75 1.05
4-3 6.00 361.34 153.09 151.66 1430.00 208.25 0.21 6866.75 8.00 12 10.00 8869.40 0.74
4-4 8.00 358.51 153.31 151.49 1820.00 205.20 0.21 8869.40 10.00 11 10.82 8030.79 0.72
4-5 10.00 361.30 150.86 149.17 1690.00 210.44 0.21 8030.79 12.00 11 10.91 7948.31 0.72
4-6 12.00 366.15 151.01 149.30 1710.00 215.14 0.22 7948.31 14.00 11 10.91 8054.83 0.73
4-7 14.00 352.99 153.11 151.50 1610.00 199.88 0.20 8054.83 16.00 11 10.91 8691.45 0.79
4-8 16.00 360.92 153.82 152.02 1800.00 207.10 0.21 8691.45 18.00 10 11.90 9919.90 0.98
4-9 18.00 368.69 153.97 151.84 2130.00 214.72 0.21 9919.90 20.00 10 12.00 9446.43 0.95
4-10 20.00 352.77 148.46 146.53 1930.00 204.31 0.20 9446.43 0.00 0 0.00 0.00
AVG = 7497.58 21.00 0 2.50 0.00
6.06 in/hr avg Total Solids Lost: 7.07
12-Jun-14 6-1 2.00 353.98 153.77 151.52 2250.00 200.21 0.20 11238.20 2.00 10.00 13.00 11238.20 1.22
6-2 4.00 384.48 158.10 150.63 7470.00 226.38 0.23 32997.61 4.00 7.00 16.71 32997.61 4.60
6-3 6.00 376.50 159.48 151.20 8280.00 217.02 0.22 38153.17 6.00 6.00 19.83 38153.17 6.31
6-4 8.00 384.27 164.99 151.38 13610.00 219.28 0.22 62066.76 8.00 6.00 20.00 62066.76 10.36
6-5 10.00 350.25 159.03 151.39 7640.00 191.22 0.19 39953.98 10.00 5.00 23.80 39953.98 7.93
6-6 12.00 353.62 153.87 150.63 3240.00 199.75 0.20 16220.28 12.00 5.00 24.00 16220.28 3.25
6-7 14.00 371.30 155.35 151.53 3820.00 215.95 0.22 17689.28 14.00 5.00 24.00 17689.28 3.54
6-8 16.00 362.54 156.52 151.40 5120.00 206.02 0.21 24851.96 16.00 5.00 24.00 24851.96 4.98
6-9 18.00 383.27 153.39 150.61 2780.00 229.88 0.23 12093.27 18.00 5.00 24.00 12093.27 2.42
6-10 20.00 386.10 154.31 147.78 6530.00 231.79 0.23 28172.05 20.00 5.00 24.00 28172.05 5.64
AVG = 28343.66 22.00 0.00 11.50 28172.05 2.70
Total Solids Lost: 52.96
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
2.05 in/hr avg
12-Jun-14 2-1 3.00 347.00 152.07 151.31 760.00 194.93 0.19 3898.84 3.00 1080 1.17 1994.35 0.02
2-2 6.00 356.39 149.76 149.17 590.00 206.63 0.21 2855.35 0.00 0 0.00 593.72 0.00
2-3 9.00 375.29 152.50 152.14 360.00 222.79 0.22 1615.87 0.00 0 0.00 0.00
2-4 12.00 357.84 150.51 150.28 230.00 207.33 0.21 1109.34 0.00 0 0.00 0.00
2-5 15.00 375.46 152.05 151.94 110.00 223.41 0.22 492.37 0.00 0 0.00 0.00
2-6 18.00 370.98 152.02 151.89 130.00 218.96 0.22 593.72 0.00 0 0.00 0.00
AVG = 1760.91 0.00 0 0.00 593.72 0.00
4.09 in/hr avg Total Solids Lost: 0.02
12-Jun-14 4-1 2.00 386.66 154.02 151.73 2290.00 232.64 0.23 9843.54 2.00 26 5.62 9843.54 0.46
4-2 4.00 355.90 150.94 149.75 1190.00 204.96 0.20 5806.01 4.00 13 8.23 5806.01 0.40
4-3 6.00 357.35 152.90 151.93 970.00 204.45 0.20 4744.44 6.00 13 9.23 4744.44 0.37
4-4 8.00 357.31 150.03 149.35 680.00 207.28 0.21 3280.59 8.00 13 9.23 3280.59 0.25
4-5 10.00 348.31 151.57 150.79 780.00 196.74 0.20 3964.62 10.00 13 9.23 3964.62 0.31
4-6 12.00 351.99 152.18 151.28 896.00 199.81 0.20 4484.17 12.00 13 9.23 4484.17 0.35
4-7 14.00 355.49 153.01 151.98 1030.00 202.48 0.20 5086.92 14.00 12 9.92 5086.92 0.42
4-8 16.00 346.88 151.63 150.65 980.00 195.25 0.20 5019.21 16.00 12 10.00 5019.21 0.42
4-9 18.00 354.23 152.59 151.54 1050.00 201.64 0.20 5207.30 18.00 12 10.00 5207.30 0.43
4-10 20.00 366.62 152.29 151.23 1060.00 214.33 0.21 4945.64 20.00 12 10.00 4945.64 0.41
AVG = 5238.24 22.00 0 4.50 4945.64 0.19
5.98 in/hr avg Total Solids Lost: 4.00
12-Jun-14 6-1 2.00 378.22 152.25 150.76 1490.00 225.97 0.23 6593.80 2.00 9.00 14.33 6593.80 0.79
6-2 4.00 363.73 152.92 150.27 2650.00 210.81 0.21 12570.56 4.00 9.00 13.33 12570.56 1.40
6-3 6.00 369.40 154.33 151.19 3140.00 215.07 0.22 14599.90 6.00 8.00 14.88 14599.90 1.81
6-4 8.00 366.14 150.09 147.54 2550.00 216.05 0.22 11802.82 8.00 7.00 17.00 11802.82 1.67
6-5 10.00 379.21 153.68 150.90 2780.00 225.53 0.23 12326.52 10.00 7.00 17.14 12326.52 1.76
6-6 12.00 382.42 152.26 149.66 2600.00 230.16 0.23 11296.49 12.00 7.00 17.14 11296.49 1.62
6-7 14.00 364.09 151.43 148.69 2740.00 212.66 0.21 12884.42 14.00 6.00 19.83 12884.42 2.13
6-8 16.00 358.67 153.95 151.32 2630.00 204.72 0.20 12846.82 16.00 6.00 20.00 12846.82 2.14
6-9 18.00 374.02 153.51 150.83 2680.00 220.51 0.22 12153.64 18.00 5.00 23.80 12153.64 2.41
6-10 20.00 372.70 154.16 151.15 3010.00 218.54 0.22 13773.22 20.00 5.00 24.00 13773.22 2.76
AVG = 12084.82 22.00 0 11.50 13773.22 1.32
Total Solids Lost: 19.82
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
2.17 in/hr avg
12-Jun-14 2-1 3.00 366.27 151.84 151.21 630.00 214.43 0.21 2938.02 3.00 584.00 1.31 1395.37 0.02
2-2 6.00 375.76 152.28 152.06 220.00 223.48 0.22 984.43 12.00 420.00 0.90 502.21 0.00
2-3 9.00 378.85 151.29 151.23 60.00 227.56 0.23 263.67 0.00 0.00 0.00 187.08 0.00
2-4 12.00 364.62 145.59 145.48 110.00 219.03 0.22 502.21 0.00 0.00 0.00 3437.62 0.00
2-5 15.00 361.64 147.83 147.79 40.00 213.81 0.21 187.08 0.00 0.00 0.00 0.00
2-6 18.00 381.39 151.58 150.79 790.00 229.81 0.23 3437.62 0.00 0.00 0.00 0.00
AVG = 1385.51 0.00 0.00 0.00 3437.62 0.00
4.09 in/hr avg Total Solids Lost: 0.02
12-Jun-14 4-1 2.00 341.80 151.56 150.40 1160.00 190.24 0.19 6097.56 2.00 15.00 9.00 6097.56 0.46
4-2 4.00 353.48 147.69 146.16 1530.00 205.79 0.21 7434.76 4.00 11.00 10.55 7434.76 0.65
4-3 6.00 362.26 153.39 151.52 1870.00 208.87 0.21 8952.94 6.00 11.00 10.91 8952.94 0.81
4-4 8.00 366.25 151.76 149.81 1950.00 214.49 0.21 9091.33 8.00 11.00 10.91 9091.33 0.83
4-5 10.00 354.55 151.95 150.33 1620.00 202.60 0.20 7996.05 10.00 11.00 10.91 7996.05 0.73
4-6 12.00 357.12 152.49 150.90 1590.00 204.63 0.20 7770.12 12.00 11.00 10.91 7770.12 0.71
4-7 14.00 358.81 153.11 151.56 1550.00 205.70 0.21 7535.25 14.00 10.00 11.90 7535.25 0.75
4-8 16.00 363.44 152.07 150.40 1670.00 211.37 0.21 7900.84 16.00 10.00 12.00 7900.84 0.79
4-9 18.00 351.61 149.82 148.27 1550.00 201.79 0.20 7681.25 18.00 10.00 12.00 7681.25 0.77
4-10 20.00 360.77 151.07 149.40 1670.00 209.70 0.21 7963.76 20.00 10.00 12.00 7963.76 0.80
AVG = 7842.39 21.00 0.00 2.50 7963.76 0.17
5.98 in/hr avg Total Solids Lost: 7.46
12-Jun-14 6-1 2.00 360.33 147.81 146.56 1250.00 212.52 0.21 5881.80 2.00 8.00 16.00 5881.80 0.79
6-2 4.00 382.09 153.50 147.79 5710.00 228.59 0.23 24979.22 4.00 7.00 17.00 24979.22 3.54
6-3 6.00 390.09 155.85 151.09 4760.00 234.24 0.23 20321.04 6.00 6.00 19.83 20321.04 3.36
6-4 8.00 378.96 155.35 150.29 5060.00 223.61 0.22 22628.68 8.00 5.00 23.80 22628.68 4.49
6-5 10.00 382.74 156.16 152.16 4000.00 226.58 0.23 17653.81 10.00 5.00 24.00 17653.81 3.54
6-6 12.00 379.97 154.70 151.94 2760.00 225.27 0.23 12251.96 12.00 5.00 24.00 12251.96 2.45
6-7 14.00 371.94 150.90 148.76 2140.00 221.04 0.22 9681.51 14.00 5.00 24.00 9681.51 1.94
6-8 16.00 374.88 153.02 151.47 1550.00 221.86 0.22 6986.39 16.00 5.00 24.00 6986.39 1.40
6-9 18.00 366.52 149.84 148.38 1460.00 216.68 0.22 6738.05 18.00 5.00 24.00 6738.05 1.35
6-10 20.00 378.54 151.96 150.91 1050.00 226.58 0.23 4634.12 20.00 5.00 24.00 4634.12 0.93
AVG = 13175.66 22.00 0.00 11.50 4634.12 0.44
Total Solids Lost: 24.23
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
2.05 in/hr
2 0.00 0 0.00 0.00 0.00 0.00 0.00 0.00
2-1 3.00 180 6.00 6.00 4.50 0.33 2.00 2.00
2-2 6.00 180 3.00 9.00 7.50 0.33 1.00 3.00
2-3 9.00 140 2.33 11.33 10.17 0.43 1.00 4.00
2-4 12.00 128 2.80 14.13 26.13 0.47 1.31 5.31
2-5 15.00 98 2.50 16.63 31.63 0.61 1.53 6.84
2-6 18.00 94 2.93 19.57 37.57 0.64 1.87 8.72
2-end 1.00 -18.57 1.00 0.32 1.53 10.25 Total Collected Runoff (approx)
4.02 in/hr
4 0 0 0.00 0.00 0.00 0.00 0.00 0.00
4-1 2 32 2.53 2.53 2.27 1.88 4.75 4.75
4-2 6 12 3.67 6.20 6.10 5.00 18.33 23.08
4-3 8 12 2.00 8.20 8.10 5.00 10.00 33.08
4-4 10 11 1.98 10.18 10.09 5.45 10.82 43.90
4-5 12 11 2.00 12.18 12.09 5.45 10.91 54.81
4-6 14 11 2.00 14.18 14.09 5.45 10.91 65.72
4-7 16 11 2.00 16.18 16.09 5.45 10.91 76.63
4-8 18 10 1.98 18.17 18.08 6.00 11.90 88.53
4-9 20 10 2.00 20.17 20.08 6.00 12.00 100.53
4-10 0 0 0.00 20.17 21.00 6.00 0.00 100.53
4-end 21.00 0.83 21.00 3.00 2.50 103.03 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 10 2.17 2.17 2.08 6.00 13.00 13.00
6-2 4 7 1.95 4.12 4.06 8.57 16.71 29.71
6-3 6 6 1.98 6.10 6.05 10.00 19.83 49.55
6-4 8 6 2.00 8.10 8.05 10.00 20.00 69.55
6-5 10 5 1.98 10.08 10.04 12.00 23.80 93.35
6-6 12 5 2.00 12.08 12.04 12.00 24.00 117.35
6-7 14 5 2.00 14.08 14.04 12.00 24.00 141.35
6-8 16 5 2.00 16.08 16.04 12.00 24.00 165.35
6-9 18 5 2.00 18.08 18.04 12.00 24.00 189.35
6-10 20 5 2.00 20.08 20.04 12.00 24.00 213.35
6-end 22.00 1.92 22.00 6.00 11.50 224.85 Total Collected Runoff (approx)
12-Jun-14
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
Associated
Runoff,
gal
Cumulative
Runoff, gal
2.05 in/hr
2 0.00 0 0.00 0.00 0.00 0.00 0.00 0.00
2-1 3.00 1080 21.00 21.00 12.00 0.06 1.17 1.17
2-2 0.00 0 0.00 21.00 0.00 0.06 0.00 1.17
2-3 0.00 0 0.00 21.00 0.00 0.06 0.00 1.17
2-4 0.00 0 0.00 21.00 0.00 0.06 0.00 1.17
2-5 0.00 0 0.00 21.00 0.00 0.06 0.00 1.17
2-6 0.00 0 0.00 21.00 0.00 0.06 0.00 1.17
2-end 20.00 -1.00 20.00 0.03 0.00 1.17 Total Collected Runoff (approx)
4.09 in/hr
4 0 0 0.00 0.00 0.00 0.00 0.00 0.00
4-1 2 26 2.43 2.43 2.22 2.31 5.62 5.62
4-2 4 13 1.78 4.22 4.11 4.62 8.23 13.85
4-3 6 13 2.00 6.22 6.11 4.62 9.23 23.08
4-4 8 13 2.00 8.22 8.11 4.62 9.23 32.31
4-5 10 13 2.00 10.22 10.11 4.62 9.23 41.54
4-6 12 13 2.00 12.22 12.11 4.62 9.23 50.77
4-7 14 12 1.98 14.20 14.10 5.00 9.92 60.69
4-8 16 12 2.00 16.20 16.10 5.00 10.00 70.69
4-9 18 12 2.00 18.20 18.10 5.00 10.00 80.69
4-10 20 12 2.00 20.20 20.10 5.00 10.00 90.69
4-end 22.00 1.80 22.00 2.50 4.50 95.19 Total Collected Runoff (approx)
5.98 in/hr
6 0 0 0.00 0.00 0.00 0.00 0.00 0.00
6-1 2 9 2.15 2.15 2.08 6.67 14.33 14.33
6-2 4 9 2.00 4.15 4.08 6.67 13.33 27.67
6-3 6 8 1.98 6.13 6.07 7.50 14.88 42.54
6-4 8 7 1.98 8.12 8.06 8.57 17.00 59.54
6-5 10 7 2.00 10.12 10.06 8.57 17.14 76.68
6-6 12 7 2.00 12.12 12.06 8.57 17.14 93.83
6-7 14 6 1.98 14.10 14.05 10.00 19.83 113.66
6-8 16 6 2.00 16.10 16.05 10.00 20.00 133.66
6-9 18 5 1.98 18.08 18.04 12.00 23.80 157.46
6-10 20 5 2.00 20.08 20.04 12.00 24.00 181.46
6-end 22.00 1.92 22.00 6.00 11.50 192.96 Total Collected Runoff (approx)
12-Jun-14
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
2.17 in/hr
2 0.00 0 0.00 0.00 0.00 0.00 0.00 0.00
2-1 3.00 584 12.73 12.73 7.87 0.10 1.31 1.31
2-2 12.00 420 6.27 19.00 15.50 0.14 0.90 2.20
2-3 0.00 0 0.00 19.00 0.00 0.14 0.00 2.20
2-4 0.00 0 0.00 19.00 0.00 0.14 0.00 2.20
2-5 0.00 0 0.00 19.00 0.00 0.14 0.00 2.20
2-6 0.00 0 0.00 19.00 0.00 0.14 0.00 2.20
2-end 20.00 1.00 20.00 0.07 0.00 2.20 Total Collected Runoff (approx)
4.09 in/hr
4 0 0 0.00 0.00 0.00 0.00 0.00 0.00
4-1 2 15 2.25 2.25 2.13 4.00 9.00 9.00
4-2 4 11 1.93 4.18 4.09 5.45 10.55 19.55
4-3 6 11 2.00 6.18 6.09 5.45 10.91 30.45
4-4 8 11 2.00 8.18 8.09 5.45 10.91 41.36
4-5 10 11 2.00 10.18 10.09 5.45 10.91 52.27
4-6 12 11 2.00 12.18 12.09 5.45 10.91 63.18
4-7 14 10 1.98 14.17 14.08 6.00 11.90 75.08
4-8 16 10 2.00 16.17 16.08 6.00 12.00 87.08
4-9 18 10 2.00 18.17 18.08 6.00 12.00 99.08
4-10 20 10 2.00 20.17 20.08 6.00 12.00 111.08
4-end 21.00 0.83 21.00 3.00 2.50 113.58 Total Collected Runoff (approx)
5.98 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 5 2.00 16.08 16.04 12.00 24.00 172.63
6-9 18 5 2.00 18.08 18.04 12.00 24.00 196.63
6-10 20 5 2.00 20.08 20.04 12.00 24.00 220.63
6-end 22.00 1.92 22.00 6.00 11.50 232.13 Total Collected Runoff (approx)
12-Jun-14
Slope #3
Run #: 1 2 3
Slope No. SLOPE #1 SLOPE #2 SLOPE #3
Test Date: 12-Jun-14 12-Jun-14 12-Jun-14
Avg Moisture Content: 17.84% 16.85% 17.20%
Location T-1 T-2 T-3
Wt. Of cup + wet soil, g 60.00 66.92 54.44
Wt. Of cup + dry soil, g 52.83 59.45 48.35
Wt. Of cup, g 14.11 13.83 13.78
Wt. Of dry soil, g 38.72 45.62 34.57
Wt. Of water, g 7.17 7.47 6.09
Water Content, w% 18.5% 16.4% 17.6%
Location M-1 M-2 M-3
Wt. Of cup + wet soil, g 54.69 46.60 58.34
Wt. Of cup + dry soil, g 48.84 41.76 51.99
Wt. Of cup, g 13.96 14.22 14.21
Wt. Of dry soil, g 34.88 27.54 37.78
Wt. Of water, g 5.85 4.84 6.35
Water Content, w% 16.8% 17.6% 16.8%
Location B-1 B-2 B-3
Wt. Of cup + wet soil, g 61.74 61.85 55.44
Wt. Of cup + dry soil, g 54.38 55.04 49.37
Wt. Of cup, g 14.02 14.01 14.00
Wt. Of dry soil, g 40.36 41.03 35.37
Wt. Of water, g 7.36 6.81 6.07
Water Content, w% 18.2% 16.6% 17.2%
WATER CONTENT DETERMINATION
Total Dry Sediments: 0.03
2 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 0.034
Wt. Of pan, lb 0
Wt. Of dry soil, lb 0.034 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 10.2
Dry Collected Sediments, lbs 0.03
Total Dry Sediments: 7.49
4 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 7.492
Wt. Of pan, lb 0
Wt. Of dry soil, lb 7.492 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 103.0
Dry Collected Sediments, lbs 7.49
Total Dry Sediments: 53.36
6 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 53.36
Wt. Of pan, lb 0
Wt. Of dry soil, lb 53.36 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 224.8
Dry Collected Sediments, lbs 53.36
Add'l Soil Collected after MajorSlumping
CollectedSediments,
gal
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
CollectedSediments,
gal
SLOPE #1 - Sediment Weights
Not Applicable
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
CollectedSediments,
gal
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
Total Dry Sediments: 0.00
2 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 0.004
Wt. Of pan, lb 0
Wt. Of dry soil, lb 0.004 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 1.2
Dry Collected Sediments, lbs 0.00
Total Dry Sediments: 3.18
4 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 3.184
Wt. Of pan, lb 0
Wt. Of dry soil, lb 3.184 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 95.2
Dry Collected Sediments, lbs 3.18
Total Dry Sediments: 18.83
6 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 18.834
Wt. Of pan, lb 0
Wt. Of dry soil, lb 18.834 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 193.0
Dry Collected Sediments, lbs 18.83
Add'l Soil Collected after MajorSlumping
CollectedSediments,
gal
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
CollectedSediments,
gal
CollectedSediments,
gal
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
SLOPE #2 - Sediment Weights
Not Applicable
Total Dry Sediments: 0.01
2 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 0.012
Wt. Of pan, lb 0
Wt. Of dry soil, lb 0.012 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 2.2
Dry Collected Sediments, lbs 0.01
Total Dry Sediments: 7.64
4 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 7.642
Wt. Of pan, lb 0
Wt. Of dry soil, lb 7.642 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 113.6
Dry Collected Sediments, lbs 7.64
Total Dry Sediments: 26.42
6 in/hr Collected
Wt. Of pan + wet soil, lb
Wt. Of pan + dry soil, lb 26.422
Wt. Of pan, lb 0
Wt. Of dry soil, lb 26.422 0
Wt. Of water, lb
Water Content, w% 0.0
Total Wet Sediments, lb -
% dry solids - 232.1
Dry Collected Sediments, lbs 26.42
Add'l Soil Collected after MajorSlumping
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
CollectedSediments,
gal
Typ. TSS in
Decanted
Collected
Runoff, lb/gal
CollectedSediments,
gal
CollectedSediments,
gal
Not Applicable
SLOPE #3 - Sediment Weights
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
Appendix
APPENDIX B – TEST SOIL
Test Soil Grain Size Distribution Curve
Compaction Curves
Field Compaction Verification
November 8, 2013
Corporate Laboratory: 9063 Bee Caves Road, Austin, TX 78733 / 800-880-TEST / 512-263-2101 / sallen@tri-env.comDenver Downs Research Facility: 4915 Clemson Blvd., Anderson, SC 29621 / 864-242-2220 / jsprague@tri-env.com
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Perc
en
tF
iner
Particle Size (mm)
DDRF ASTM D 6459 Blended Test Soil
ASTM D 6459 Target Loam Range
Plasticity (ASTM D 4318)Liquid Limit: 30Plastic Limit: 22Plastic Index: 8
Soil classifies as a clayey sand (SC)in accordance with ASTM D 2487
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.
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
James Sprague, 11/08/13
Tested by: J.E.Sprague
80
85
90
95
100
105
110
115
120
10 15 20 25 30 35 40 45 50
Dry
Den
sity
(pcf
)
Moisture Content (%)
Proctor Compaction Test
2.80
2.60
2.70
Project: DDRF
Sample No.: SLOPE COMPOSITE
Test Date: NOVEMBER 8, 2013
Test Method: ASTM D 698 - Method A
Maximum Dry Density (pcf): 99.2
Optimum Moisture Content (%): 19.5
Location: Date: 11/8/2013
Drive Cylinder: Dia., mm = 98 Length, mm = 127 Volume, ft3= 0.034
Tube # 1 2 3 4 5 6
Wt. of Wet Soil + Mold (g) 2277.0 2282.0 2217.0 2242.0 2255.0 2266.0
Wt. of Mold (g) 615.0 615.0 615.0 615.0 615.0 615.0
Wt. of Wet Soil (g) 1662.0 1667.0 1602.0 1627.0 1640.0 1651.0
Tare Number B T M
Wt. of Tare (g) 14.2 14.2 14.2 14.2 14.2 14.2
Wt. of Wet Soil + Tare (g) 24.4 23.4 25.5 23.5 25.4 24.9
Wt. of Dry Soil + Tare (g) 22.9 22.1 23.7 22.0 23.8 23.3
Water Content, w (%) 17.336 16.456 18.927 19.206 16.649 17.563
Wet density, ɣwet = W' / Vh (lb/ft3) = 108.21 108.54 104.31 105.93 106.78 107.50
Dry density, ɣdry = ɣwet / [1 + w] (lb/ft3) = 92.22 93.20 87.70 88.87 91.54 91.44
Max Std. Proctor Dry density (lb/ft3) = 99.20 99.20 99.20 99.20 99.20 99.20
Opt. Moisture (%) = 19.50 19.50 19.50 19.50 19.50 19.50
Compaction as % of Std. Proctor = 93.0% 94.0% 88.4% 89.6% 92.3% 92.2%
Avg Compaction as % of Std. Proctor =
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.
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
James Sprague, 11/8/13
Quality Review/Date
Tested by: J.E. Sprague
Compaction Worksheet
ASTM D 2937
DDRF SLOPES
Compaction
Moisture Content
91.6%
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
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 DistributionNovember 2013
0.21 - 0.425 mm 0.425 - 1.0 mm 1.0 - 2.0 mm 2.0 - 4.75 mm 4.75 - 6.3 mm 6.3 - 9.5 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: 8-Nov-13 Start Time: 8:45 AM End Time: 9:00 AM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 11 mm d = 12 mm X
i = 1.73 in/hr B i = 1.89 in/hr P = 9 psi X
X d = 12 mm d = 11 mm X
psi X P = 9 psi i = 1.89 in/hr C i = 1.73 in/hr X
X d = 12 mm d = 13 mm X
X i = 1.89 in/hr D i = 2.05 in/hr P = 9 psi X
X d = 13 mm d = 13 mm X
psi X P = 9 psi i = 2.05 in/hr E i = 2.05 in/hr X
X d = 13 mm d = 14 mm X
X i = 2.05 in/hr F i = 2.20 in/hr P = 9 psi X
X d = 13 mm d = 13 mm X
psi X P = 9 psi i = 2.05 in/hr G i = 2.05 in/hr X
X d = 13 mm d = 12 mm X
X i = 2.05 in/hr H i = 1.89 in/hr P = 9 psi X
X d = 12 mm d = 15 mm X
X P = 9 psi i = 1.89 in/hr I i = 2.36 in/hr X
X d = 13 mm d = 13 mm X
X i = 2.05 in/hr J i = 2.05 in/hr P = 9 X
d = 11 mm d = 12 mm X
i = 1.73 in/hr i = 1.89 in/hr X
Bottom Catch: 95 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 12.55 mm
Average Rainfall Intensity: 1.98 in/hr
Christiansen Uniformity Coefficient: 94
15 16
17
14
18
1 2
A
19 20
13
11
5 6
4
7 8
9 10
3
12
Rainfall Calibration
TOP OF SLOPE
DDRF
Slope 1 - Target 2 in/hr
X X X X
Date: 8-Nov-13 Start Time: 9:15 AM End Time: 9:30 AM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 24 mm d = 23 mm X
i = 3.78 in/hr B i = 3.62 in/hr P = 9 psi X
X d = 25 mm d = 23 mm X
psi X P = 9 psi i = 3.94 in/hr C i = 3.62 in/hr X
X d = 26 mm d = 25 mm X
X i = 4.09 in/hr D i = 3.94 in/hr P = 9 psi X
X d = 26 mm d = 27 mm X
psi X P = 9 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 = 9 psi X
X d = 26 mm d = 26 mm X
psi X P = 9 psi i = 4.09 in/hr G i = 4.09 in/hr X
X d = 27 mm d = 27 mm X
X i = 4.25 in/hr H i = 4.25 in/hr P = 9 psi X
X d = 27 mm d = 25 mm X
psi X P = 9 psi i = 4.25 in/hr I i = 3.94 in/hr X
X d = 26 mm d = 26 mm X
X i = 4.09 in/hr J i = 4.09 in/hr P = 9 psi X
d = 25 mm d = 25 mm X
i = 3.94 in/hr i = 3.94 in/hr X
Bottom Catch: 205 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 25.65 mm
Average Rainfall Intensity: 4.04 in/hr
Christiansen Uniformity Coefficient: 96
DDRF
Rainfall Calibration
7 8
9 10
3 4
19 20
13 14
TOP OF SLOPE
Slope 1 - Target 4 in/hr
18
5 6
A
15 16
17
X X X X
1 2
11 12
Date: 8-Nov-13 Start Time: 9:43 AM End Time: 9:58 AM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 37 mm d = 36 mm X
i = 5.83 in/hr B i = 5.67 in/hr P = 9 psi X
X d = 37 mm d = 38 mm X
psi X P = 9 psi i = 5.83 in/hr C i = 5.98 in/hr X
X d = 38 mm d = 40 mm X
X i = 5.98 in/hr D i = 6.30 in/hr P = 9 psi X
X d = 38 mm d = 39 mm X
psi X P = 9 psi i = 5.98 in/hr E i = 6.14 in/hr X
X d = 40 mm d = 41 mm X
X i = 6.30 in/hr F i = 6.46 in/hr P = 9 psi X
X d = 38 mm d = 40 mm X
psi X P = 9 psi i = 5.98 in/hr G i = 6.30 in/hr X
X d = 37 mm d = 39 mm X
X i = 5.83 in/hr H i = 6.14 in/hr P = 9 psi X
X d = 37 mm d = 42 mm X
psi X P = 9 psi i = 5.83 in/hr I i = 6.61 in/hr X
X d = 36 mm d = 38 mm X
X i = 5.67 in/hr J i = 5.98 in/hr P = 9 psi X
d = 36 mm d = 36 mm X
i = 5.67 in/hr i = 5.67 in/hr X
Bottom Catch: 300 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 38.15 mm
Average Rainfall Intensity: 6.01 in/hr
Christiansen Uniformity Coefficient: 96
15 16
17
14
18
1 2
A
19 20
13
11
5 6
4
7 8
9 10
3
12
Slope 1 - Target 6 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
X X X X
Date: 8-Nov-13 Start Time: 10:30 AM End Time: 10:45 AM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 11 mm d = 12 mm X
i = 1.73 in/hr B i = 1.89 in/hr P = 9 psi X
X d = 13 mm d = 13 mm X
psi X P = 9 psi i = 2.05 in/hr C i = 2.05 in/hr X
X d = 14 mm d = 13 mm X
X i = 2.20 in/hr D i = 2.05 in/hr P = 9 psi X
X d = 13 mm d = 13 mm X
psi X P = 9 psi i = 2.05 in/hr E i = 2.05 in/hr X
X d = 14 mm d = 14 mm X
X i = 2.20 in/hr F i = 2.20 in/hr P = 9 psi X
X d = 14 mm d = 13 mm X
psi X P = 9 psi i = 2.20 in/hr G i = 2.05 in/hr X
X d = 14 mm d = 14 mm X
X i = 2.20 in/hr H i = 2.20 in/hr P = 9 psi X
X d = 14 mm d = 13 mm X
psi X P = 9 psi i = 2.20 in/hr I i = 2.05 in/hr X
X d = 13 mm d = 12 mm X
X i = 2.05 in/hr J i = 1.89 in/hr P = 9 psi X
d = 11 mm d = 12 mm X
i = 1.73 in/hr i = 1.89 in/hr X
Bottom Catch: 100 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 13 mm
Average Rainfall Intensity: 2.05 in/hr
Christiansen Uniformity Coefficient: 95
DDRF
Rainfall Calibration
7 8
9 10
3 4
19 20
13 14
TOP OF SLOPE
Slope 2 - Target 2 in/hr
18
5 6
A
15 16
17
X X X X
1 2
11 12
Date: 8-Nov-13 Start Time: 10:51 AM End Time: 11:06 AM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 22 mm d = 22 mm X
i = 3.46 in/hr B i = 3.46 in/hr P = 9 psi X
X d = 24 mm d = 26 mm X
psi X P = 9 psi i = 3.78 in/hr C i = 4.09 in/hr X
X d = 26 mm d = 25 mm X
X i = 4.09 in/hr D i = 3.94 in/hr P = 9 psi X
X d = 26 mm d = 27 mm X
psi X P = 9 psi i = 4.09 in/hr E i = 4.25 in/hr X
X d = 28 mm d = 25 mm X
X i = 4.41 in/hr F i = 3.94 in/hr P = 9 psi X
X d = 27 mm d = 27 mm X
psi X P = 9 psi i = 4.25 in/hr G i = 4.25 in/hr X
X d = 28 mm d = 27 mm X
X i = 4.41 in/hr H i = 4.25 in/hr P = 9 psi X
X d = 25 mm d = 28 mm X
psi X P = 9 psi i = 3.94 in/hr I i = 4.41 in/hr X
X d = 26 mm d = 25 mm X
X i = 4.09 in/hr J i = 3.94 in/hr P = 9 psi X
d = 22 mm d = 23 mm X
i = 3.46 in/hr i = 3.62 in/hr X
Bottom Catch: 200 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 25.45 mm
Average Rainfall Intensity: 4.01 in/hr
Christiansen Uniformity Coefficient: 94
15 16
17
14
18
1 2
A
19 20
13
11
5 6
4
7 8
9 10
3
12
Slope 2 - Target 4 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
X X X X
Date: 8-Nov-13 Start Time: 11:15 AM End Time: 11:30 AM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 35 mm d = 36 mm X
i = 5.51 in/hr B i = 5.67 in/hr P = 9 psi X
X d = 38 mm d = 39 mm X
psi X P = 9 psi i = 5.98 in/hr C i = 6.14 in/hr X
X d = 40 mm d = 39 mm X
X i = 6.30 in/hr D i = 6.14 in/hr P = 9 psi X
X d = 39 mm d = 36 mm X
psi X P = 9 psi i = 6.14 in/hr E i = 5.67 in/hr X
X d = 38 mm d = 38 mm X
X i = 5.98 in/hr F i = 5.98 in/hr P = 9 psi X
X d = 40 mm d = 41 mm X
psi X P = 9 psi i = 6.30 in/hr G i = 6.46 in/hr X
X d = 39 mm d = 40 mm X
X i = 6.14 in/hr H i = 6.30 in/hr P = 9 psi X
X d = 39 mm d = 39 mm X
psi X P = 9 psi i = 6.14 in/hr I i = 6.14 in/hr X
X d = 37 mm d = 36 mm X
X i = 5.83 in/hr J i = 5.67 in/hr P = 9 psi X
d = 33 mm d = 36 mm X
i = 5.20 in/hr i = 5.67 in/hr X
Bottom Catch: 295 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 37.9 mm
Average Rainfall Intensity: 5.97 in/hr
Christiansen Uniformity Coefficient: 96
DDRF
Rainfall Calibration
7 8
9 10
3 4
19 20
13 14
TOP OF SLOPE
Slope 2 - Target 6 in/hr
18
5 6
A
15 16
17
X X X X
1 2
11 12
Date: 8-Nov-13 Start Time: 1:05 PM End Time: 1:20 PM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 13 mm d = 12 mm X
i = 2.05 in/hr B i = 1.89 in/hr P = 9 psi X
X d = 12 mm d = 13 mm X
psi X P = 9 psi i = 1.89 in/hr C i = 2.05 in/hr X
X d = 13 mm d = 13 mm X
X i = 2.05 in/hr D i = 2.05 in/hr P = 9 psi X
X d = 14 mm d = 12 mm X
psi X P = 9 psi i = 2.20 in/hr E i = 1.89 in/hr X
X d = 14 mm d = 13 mm X
X i = 2.20 in/hr F i = 2.05 in/hr P = 9 psi X
X d = 13 mm d = 14 mm X
psi X P = 9 psi i = 2.05 in/hr G i = 2.20 in/hr X
X d = 13 mm d = 13 mm X
X i = 2.05 in/hr H i = 2.05 in/hr P = 9 psi X
X d = 13 mm d = 11 mm X
psi X P = 9 psi i = 2.05 in/hr I i = 1.73 in/hr X
X d = 11 mm d = 11 mm X
X i = 1.73 in/hr J i = 1.73 in/hr P = 9 psi X
d = 11 mm d = 11 mm X
i = 1.73 in/hr i = 1.73 in/hr X
Bottom Catch: 95 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 12.5 mm
Average Rainfall Intensity: 1.97 in/hr
Christiansen Uniformity Coefficient: 93
15 16
17
14
18
1 2
A
19 20
13
11
5 6
4
7 8
9 10
3
12
Slope 3 - Target 2 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
X X X X
Date: 8-Nov-13 Start Time: 1:30 PM End Time: 1:45 PM
Test Time: 15 min. (circle "x" for open valves)
P = 9 psi
d = 24 mm d = 24 mm X
i = 3.78 in/hr B i = 3.78 in/hr P = 9 psi X
X d = 26 mm d = 27 mm X
psi X P = 9 psi i = 4.09 in/hr C i = 4.25 in/hr X
X d = 28 mm d = 26 mm X
X i = 4.41 in/hr D i = 4.09 in/hr P = 9 psi X
X d = 29 mm d = 25 mm X
psi X P = 9 psi i = 4.57 in/hr E i = 3.94 in/hr X
X d = 25 mm d = 26 mm X
X i = 3.94 in/hr F i = 4.09 in/hr P = 9 psi X
X d = 27 mm d = 24 mm X
psi X P = 9 psi i = 4.25 in/hr G i = 3.78 in/hr X
X d = 26 mm d = 26 mm X
X i = 4.09 in/hr H i = 4.09 in/hr P = 9 psi X
X d = 25 mm d = 23 mm X
psi X P = 9 psi i = 3.94 in/hr I i = 3.62 in/hr X
X d = 25 mm d = 24 mm X
X i = 3.94 in/hr J i = 3.78 in/hr P = 9 psi X
d = 22 mm d = 22 mm X
i = 3.46 in/hr i = 3.46 in/hr X
Bottom Catch: 195 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 25.2 mm
Average Rainfall Intensity: 3.97 in/hr
Christiansen Uniformity Coefficient: 94
DDRF
Rainfall Calibration
7 8
9 10
3 4
19 20
13 14
TOP OF SLOPE
Slope 3 - Target 4 in/hr
18
5 6
A
15 16
17
X X X X
1 2
11 12
Date: 8-Nov-13 Start Time: 2:01 PM End Time: 2:16 PM
Test Time: 15.00 min. (circle "x" for open valves)
P = 9 psi
d = 37 mm d = 35 mm X
i = 5.83 in/hr B i = 5.51 in/hr P = 9 psi X
X d = 39 mm d = 37 mm X
psi X P = 9 psi i = 6.14 in/hr C i = 5.83 in/hr X
X d = 38 mm d = 36 mm X
X i = 5.98 in/hr D i = 5.67 in/hr P = 9 psi X
X d = 39 mm d = 39 mm X
psi X P = 9 psi i = 6.14 in/hr E i = 6.14 in/hr X
X d = 41 mm d = 41 mm X
X i = 6.46 in/hr F i = 6.46 in/hr P = 9 psi X
X d = 39 mm d = 38 mm X
psi X P = 9 psi i = 6.14 in/hr G i = 5.98 in/hr X
X d = 41 mm d = 40 mm X
X i = 6.46 in/hr H i = 6.30 in/hr P = 9 psi X
X d = 40 mm d = 37 mm X
psi X P = 9 psi i = 6.30 in/hr I i = 5.83 in/hr X
X d = 36 mm d = 35 mm X
X i = 5.67 in/hr J i = 5.51 in/hr P = 9 psi X
d = 36 mm d = 35 mm X
i = 5.67 in/hr i = 5.51 in/hr X
Bottom Catch: 290 gal
Inlet Pressure: 16 psi
Average Wind: 0 mph
Average Depth: 37.95 mm
Average Rainfall Intensity: 5.98 in/hr
Christiansen Uniformity Coefficient: 95
15 16
17
14
18
1 2
A
19 20
13
11
5 6
4
7 8
9 10
3
12
Slope 3 - Target 6 in/hr
TOP OF SLOPE
DDRF
Rainfall Calibration
X X X X
Straw Bio, Double Biodegradable Net Straw Blanket, over Loam
Slope Erosion Testing for NTPEP
June 30, 2014
Appendix
APPENDIX D – ANCHORAGE PATTERN
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