PERMFILE46507

• Permit No: C1981025
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Phase II & III Bond Release Revegetation Success Sampling Jan 2002
• Section_Exhibit Name: 3.0 APPENDIX 3-Y
• Media Type: D
• Archive: No

co
• •
At least 2 taxa must be perennial grasses and 1 a perennial forb or shrub (non-noxious).
•
Table RS 1
Phase II & III Revegetation Success Comparisons -Summary
North Thompson Creek Mines
2000 2001
Variable /Parameter Reference
Area Reference
Area _ _
Value Value P~ss / Value Value PFaisl /

Perennial Cover (%)
Estimated Mean 30.13 46.48 30.40 54.40
90% of Reference Area Mean ?7.12 27.12 ?7.36 27.36
Standard Deviation 6.21 7.67 ~ a 76 8.87 ~
Sample Size Collected 15 25 ~ 15 25 ~
Minimum Sample Necessary (10/90! ~ 17 4.05 Q 3.~8 4.45 Q
90%Conf. Int. for Mean (t) 2.~;~1 2.52 a ? ~;? 2.92 (1
Calculated t-statistic (t')- one sample test 12.6226 15.2431
Tabular talue fort ,~, , ,;.,„, -~ ~ ~" ~ .'" !~`!
Perennial, Non-Noxious Production (g/0.5ma)
Estimated Mean 13.61 82.99 8.71 61.24
90% of Reference Area Mean 12.?_5 12.2. ~-: 7.84 7.84
Standard Deviation 5.64 24.40 ~ 3.55 14.97 ~
Sample Size Collected 35 37 ~ 36 37 ~
Minimum Sample Necessary (10/90) 20.53 12.58 Q 2F 65 10.02 Q
90% Conf. Int. for Mean (~) 1.57 t; 6n n' ~i ~~7 4.05 d
Calculated t-statistic (f') -one sarnp~e tes? 17.6382 21.6999
Tabular talue fort ,,, , „ , ~, ;
Diversity (No. of Perennial Species with Between 3 and 60% Rel. Cover)
Perennial Grasses 2 4 3 5
Perennial Forbs 1 1 U1 1 2 (n

Shrubs/trees 6 1 Q 6 1 Q
Total '? 6 d ' ^ 8 f1