REV96528

• Permit No: C1981023
• IBM Index Class Name: Revision
• Doc Name: REQUEST FOR PHASE II BOND RELEASE AT KAISER VENTURES INC CHIMNEY ROCK MINE
• Type & Sequence: SL3
• Media Type: D
• Archive: No

VeRtlmion SDn1DlirtR (or /996
Summary of Cover Sample Adequacy Calculations, Chimney Rock Mine

Area Acres Adjusted Adjusted Mean Actual Computed
Vegetation Cover Vegetation Standard Sample Adequate
Mean Standard Cover Deviation Size Sample Size
Cover Deviation (percent)
Value
Reclaimed Areas
West Slape 23 9.3 2.16 11.2 0.63 10 0.61
1984
West Slope 2 10.7 3.21 12.7 0.58 3 0.74
1991
Topsoil 1 14.7 2.52 15.7 1.15 3 1.46
Stockpile
Top Slope I 9.7 I.IS 11.7 0.58 3 0.87
South Slope IS 10.3 2.83 I1.9 0.99 l0 1.34
North Flat 3 13.0 1.00 l4.0 1.00 3 I.81
East Slope 9 11.6 2.97 16.2 1.30 5 1.52
Barren 13 14.4 2.12 17.1 1.29 l0 I.OS
Ridge
Revision 1 30 13.2 1.62 13.5 1.65 10 2.86
Drvland Reference I 8.5 I.I8 8.6 I.07 l0 2.99
Area
Reclaimed Alluvial
Valley Floor
A V F 1990 9 72.0 3.62 73.2 2.94 10 0.31
AVF 1991 3 56.7 3.51 72.0 2.65 3 0.48
Alluvial Valley Floor I 65.2 6.76 69.6 1.14 5 0.06
Reference Area
Facilities Area 3
Vegetative cover was sampled using 50-meter point-intercept transects that were randomly located
and orientated within each sampling area. Transect locations or orientations that resulted in
overlap of previous transects or the sampling azea boundary were randomly redirected prior to the
point of overlap. Vegetative ground cover was evaluated by placing a fifty meter tape along each
transect location. Two sampling points (one meter apart) on both sides of the transect were
sampled a[ one meter intervals, resulting in 100 sample points per transect. Each corresponding
sample point was determined by projection of the ocular sight (Cover-Point Optical Point
Projection Device (Model 2) vertically downward and physically recording all manner of "first
hits". The "first-hits" were recorded as rock, bare ground, litter, and live vegetation. Live
RY'A V.OSI~Alarch 19, 199] A-2