PERMFILE121348

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 9/27/2007
• Doc Name: Wolf Creek Pre-Law Area Remediation Plan
• Section_Exhibit Name: Tab 13 Attaachment 13-16
• Media Type: D
• Archive: No

fee[ per second as the limiting velocity value, which is the most conservative velocity value in the
manufacturer's literature.
TABLE 3
Turf Reinforcement Mat Performance Guide
Permissible Sheer
Permissible Velocity
Stress
Manning's (fps)
Product Manufacturer « ~~ Ibs/ft
n

Bork Vegetated Suit Vegetated

P300 North American Green 0.034 9.0 16.0 3.0 8.0
SC250 North American Green 0.040 9.5 15.0 3.0 10.0
C350 North American Green 0.041 10.5 20.0 3.2 12.0
P550 North American Green 0.041 12.5 25.0 4.0 14.0
CFP-12 Greenfix America 0.024 12.0 4.5
CPG- 3000 Greenfix America 0.024 20.0 10.0
Enkaina[
Colbond Geosynethetics 0.030 20.0 19.0 6.7 8.0
7010
Enkamat
Colbond Geosynethetics 0.030 20 19 ll.2 9.0
7018
Enkamat
Colbond Geosynethetics 0.030 13.0 19.0 11.2 10.0
7020
Notes: 1) This is a select list of products; SCC may use another equivalent product if the performance
criterion meets the minimum standards.
2) The manufacturer's product-specific performance properties are documented in Attachment
B, Turf Reinforcement Mat Design and Installation Information.
3) Mannin~'s "n" values are based on bare soil conditions with a flow de th of 0.5 feet.
Channel capacity was analyzed using the vegetated channel sub-routine. The channel roughness
coefficient is automatically calculated by the model. The limiting velocity value was hand entered
(manufacturer's published limiting velocity values for the TRM products axe summarized in
Table 3). The designs assume a mixed grass community, 6 - 10-inches tall, which corresponds to
a "C" retaxdance class, and results in a higher surface water elevation.
The TRM lined part of Channel PL-1 will be three (3) wide. Side slopes will be 4H:1V.
TRNI installation will be in accordance with recommendations developed by the Erosion Control
Technical Council (ECTC, 2006) or the individual manufacturer's recommendations.
General installation steps axe as follows:
1. Prepare a stable and firm soil surface free of large rocks and other obstructions. Apply
appropriate seed mixture. ,
2. Install TRM after application of seed, mulches (if applicable) and other soil amendments,
unless soil in-filling is required. If soil in-Filling is needed, install TRM, apply seed and
other amendments and brush or rake topsoil into TRM matrix.
Old Wolf Creek Area Remediation Plan 6 Revised 06/07