PERMFILE111188

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: DESIGN AND STABILITY REPORTS FOR POND 005 AND HAUL ROAD G
• Section_Exhibit Name: TAB 13 ATTACHMENT 13-3
• Media Type: D
• Archive: No

TABLE 13-3-3
Weighted CN Calculations for
Pond 005 - SWS-2
Vegetation Hydrologic Vegetation
Cover TYee___ Soil Groue______ _COVer_i%)___ ___CN ____ ___Area CN x Area
Mixed Brush B 30-70 48 2.8 120 .0
Mixed Brush C 30-70 57 4.2 239 .4
Mixed Brush D 30-70 63 8.6 541 .8
Sagebrush B 30-70 51 14.9 759 .9
Sagebrush C 30-70 63 8.2 516 .6
Sagebrush D 30-70 70 26.6 1862. 0
Western Wheatg ra ss B 30-70 71 0.7 49 .7
Western Wheatgrass D 30-70 89 1.5 133 .5
Topsoil Stockpile B - 76 2.5 190 .0
(Topsoil Removal/D istrubed) B - 86 19.8 1702 .8
Total 89.5 6115 .7
Weighted Average CN = 6115.7 = 68.3 Use 68
89.5
I 1
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TABLE 13-3-4
Weighted CN Calculations for
Pond 005 SWS-3
Vegetation Hydrologic Vegetation
Cover_iype ______________ Soil_Group_______ _C OV er_i%) __CN____ ____Area____ ___CN_x Area
Mixed Brush B 30-70 48 9.3 446 .4
Mixed Brush C 30-70 57 6.5 376 .2
Mixed Brush D 30-70 63 0.6 37 .8
Sagebrush B 30-70 51 1.9 96 .9
Sagebrush C 30-70 63 0.4 25 .2
Sagebrush D 30-70 70 0.2 14 .0
Steep Mountain Brush B 30-70 67 0.6 40 .2
Steep Mountain Brush D 30-70 83 0.2 16 .6
Western Wheatgrass D 30-70 89 0.8 71 .2
Haul Road B - 88 11.1 943 .5
Total 31.7 2068 .0
Weighted Average CN = 2068.0 65.2 Use 65
31.7
13-3-8 Revised 03/13/92