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4.0 SUCCESS COMPARISON <br /> The West Mine passed all success criteria in 2019 and 2021. The demonstration of adequacy and a <br /> minimum of 15 transects in each unit allow for a direct comparison for cover and production per Rule <br /> 4.15.11 (2)(a). A reverse null ranked"L"test was utilized for the woody plant density variable as per Rule <br /> 4.15.11 (3)(a) in 2019 while a minimum of 75 transects (n=82)for woody plant density allows for a direct <br /> comparison as per Rule 4.15.11 (3)(a) in 2021. A summary of success comparisons is provided on the <br /> following pages in Table 1 and Charts 5 through 10. Table 1 gives a quick indication of the overall success <br /> of the revegetation unit compared with the standards. Charts 5 through 10 provide a visual display of the <br /> same comparisons. <br /> Table 1 Bowie #1 Mine <br /> Revegetation Success Criteria Comparisons - 2019 & 2021 (per TR-63) <br /> Plant Cover Production Woody Plant Density <br /> Live Trees,Shrubs,and Sub-Shrubs <br /> Annual(Total) (per acre) <br /> Total Plant Cover* Herbaceous* Reverse Null <br /> (%average cover) <br /> Area Year (pounds per acre) Average Ranked "L"Test <br /> Sampled (If n >_ 75) (If n < 75) <br /> Success Criteria >54% >405 >90 >90 <br /> 2�5.4A <br /> ss 1,089 Pass 366 N/A' 912 Pass <br /> West Mine <br /> 2ss 549 Pass 341 Pass3 N/A N/A <br /> Diversity (Number of Species) <br /> Total Native or Total Native Total Native or Total Native Sub- <br /> Introduced Perennial Introduced Shrubs,Trees,and <br /> Perennial Cool-Season Perennial Farbs Shrubs <br /> Herbaceous Grasses <br /> Area Year (Between 0.5&60% Relative Cover) (<80% Rel. Cover) <br /> Sampled <br /> Success Criteria >5 >3 >2 >2 <br /> 2019 11 Pass 4 Pass 6 Pass 5 Pass <br /> West Mine <br /> 2021 9 Pass 4 Pass 4 Pass 3 Pass <br /> *Excluding noxious weeds 1 n was 60 2 Lower 80%Confidence Limit 3 n was 82 <br /> The West Mine unit surpassed the total plant cover (excluding noxious weeds) success criterion of <br /> >_54.0% (90% of the technical standard value of 60%) with 79.8% in 2019 and 54.6% in 2021 (Chart 5). <br /> The annual (total) herbaceous production success criterion of>_405 pounds per acre (90% of the technical <br /> standard value of 450 pounds per acre) was surpassed with 1,089 pounds per acre in 2019 and 549 in <br /> 2021 (Chart 6). A total of 366 trees,shrubs,and sub-shrubs per acre were sampled in 2019 which equates <br /> CEDAR CREEK ASSOCIATES, Inc. 16 Bowie #1 Mine-West Mine - 2021 <br /> Phase III Bond Release Evaluation <br />