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

PERFORMANCE SPECIFICATION
a
AME°Rf~c~ly P300
GREEN'
The P300 permanent turf reinforcement mat shall be amachine-produced mat of 100% W stable polypropylene fiber.
The matting shall be of consistent thickness with synthetic fibers evenly distributed over the entire azea of the mat. The
matting shall be covered on the top with black heavyweight UV stabilized polypropylene netting having ultraviolet
additives to prevent breakdown and an approximate 0.50 x 0.50 inch (1.27 x 1.27 cm) mesh size. The bottom net shall
also be UV stabilized polypropylene, with a 0.625 x 0.625 inch (1.57 x 1.57 cm) mesh size. The matting shall be sewn
together on I.50 inch (3.81 cm) centers with UV stabilized polypropylene thread.
Slope Design Data
Slo a Gradient S
Slo eLen L 53:1 3:1-2:1 _>2:1
<_ 20 ft (6 m) 0.001 0.029 0.082
20 - 50 ft 0.036 0.06 0.096
> SO ft (15.2 m) 0.07 0.09 0.11
Channel Design Data
Rou hness Coeffcients
Flow De th Mannin 's `n'
_< 0.50 ft 0.15 m 0.034
0.50 - 2.00 ft 0.034-0.020
> 2.00 ft 0.60 m O.D20
Values aze approximate, precise values obtained from
ECMDS'TM
Ammroximate Maximum Flow Velocity
Unvegetated = 9 ft/s (2.7 m/s)
Ve etated = 16 fi/s 4.9 m/s
Maximum Permissible Sheaz Stress*
Short Duration Lon Duration
Phase I
UNVEGETATED 3.0 Ibs/ft'
144 Pa 2.0Ibs/ft'
96 Pa
Phase 2
PARTIALLY VEGETATED 8.0 lbs/ft=
383 Pa 8.0 lbs/ft'
383 Pa
Phase 3
FULLY VEGETATED 8.0 ]bs/ft'
383 Pa 8.0 lbs/ft'
383 Pa
"Performance values obtained through third party testing at the Texas Transportation Institute, Colorado State University, and Utah State
University based on soil lass failure criteria not exceeding 0.50 inches (1.27 cm).
Updated 1/2004