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2023-07-13_REVISION - C1981019
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2023-07-13_REVISION - C1981019
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Entry Properties
Last modified
7/14/2023 10:34:04 AM
Creation date
7/14/2023 7:29:58 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Revision
Doc Date
7/13/2023
Doc Name
Application
From
Tony Tennyson -Tri-State Generation and Transmission Association, Inc.
To
DRMS
Type & Sequence
SL22
Email Name
ZTT
AME
Media Type
D
Archive
No
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K Factor for Colo O Mine Post-Mining K Factor Inputs <br /> Parameter Value <br /> Pre-Mining Texture (%) <br /> Soil Symbol Percent K Factor Sand 36 <br /> Silt 34 <br /> Campspass fine sandy loam 26 2% 0.24 Clay 30 <br /> Cochetopa loam 37/38 61% 0.28 organic Matter(%) 1 <br /> Morapos loam 135 20% 0.32 structure Code 4 <br /> Ustorthents, frigid-Borolls complex 206 18% 0.10 Permeability Class 3 <br /> Average 0.255 K-Factor 0.228 <br /> Lenath Slope Factor LS <br /> The LS factor accounts for uninterrupted slope lengths and slope steepness. Representative slope <br /> lines were draped onto the pre-mining and post-mining topography in AutoCAD to provide slope lengths <br /> and gradients. The table below presents the LS Factors calculated for each slope using RUSLE 1.06c. <br /> LS Factor for Colow o Mine <br /> A B <br /> Pre-Mining Post-Mining Pre-Mining Post-Mining <br /> Gradient (%) 5.5 5.7 2.3 2.7 <br /> Length (ft) 570 570 856 856 <br /> LS-Factor 1.847 1.936 0.679 0.846 <br /> Vegetative Cover Factor C <br /> The C factor takes into account surface characteristics that affect soil particle detachment. Data <br /> collected for baseline efforts (pre-mining) and Phase II evaluations (post-mining) were used to determine <br /> C Factors. The table below presents the C Factors calculated using RUSLE 1.06c for each vegetation <br /> community and timeframe along with the inputs used to derive those results. <br /> 15 <br />
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