PERMFILE54870

• Permit No: C1980005A
• IBM Index Class Name: Permit File
• Doc Date: 9/28/2007
• Doc Name: 10 Year, 24 Hour SEDCAD Modeling
• Section_Exhibit Name: Tab 07 Appendix 7-6f.3 Addendum 7-6f.3A
• Media Type: D
• Archive: Yes

Pond 008
HYDROLOGIC INPUT PARAMETERS
SEDCAD 4
WATERSHED ID
Structure 1 - SWS3
Pond 008 Subwatershed 3
Watershed Area:
1.6
Sedimentology: k Factor and Control Factor
VEGETATION HYDROLOGIC k CONTROL AREA
WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR (acres)
Pond Surface n/a n/a 1 1 1.58
Total 1.6
1.00 1.00
SEDCAD 4
WATERSHED ID
Structure 1 - SWS4
Pond 008 Subwatershed 4
Watershed Area:
4.6
Sedimentology: k Factor and Control Factor
VEGETATION HYDROLOGIC k CONTROL AREA
WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR (acres)
Reclaimed Good (>70%) B 0.16 0.043 4.59
Total 4.6
0.16 0.043
The soil erodibility factor, "k-Factor", values were determined based on Seneca II soil survey information (see Tab 9,
Exhibit 9-1, Soil Types and Sample Locations, and Attachment 9-6) as presented in Soils of Colorado, Loss Factors and
Erodibility, Soil Conservation Service, 1983.
The Control Factor values were adapted from the Yoast and Seneca II-W permit application packages. These values are
presented in each permit in the Drainage and Sediment Control Plan attachment, which is located in Tab 13 of the
respective permit documents. The values are based on Renard, et al. (Renard, K.G., Foster, G.R., Weesies, G.A.,
McCool, D.K., and D.C. Yoder, coordinators, 1996. Predicting Soil Erasion by Water: A Guide to Converation Planning
with the Revised Universal Soil Loss Equation (RUBLE). Agricultural Handbook 703. U.S. Department of Agriculture.

•
TR-42 7-6f.3A-18 Revised 09/07