Laserfiche WebLink
Productivity: Shadscale Bond Release Block 2011 & 2012. <br />Total herbaceous productivity in 2011 on the shadscale bond release block was 516.5 lbs/acres. The <br />average perennial herbaceous production was 257.7 lbs/acre. <br />The average total herbaceous production measured in 2011 on the shadscale reference area was 92.70 <br />lbs/acre composed of non -noxious perennial species. The reclamation success standard requires the <br />reclaimed area to meet or exceed 90% of the total herbaceous production on the approved reference <br />area at a 90% confidence interval (PAP pg. 12-23). 90% of total herbaceous production equaled 83.40 <br />lbs/acre. The Division finds the shadscale bond release block successful for total herbaceous <br />production for 2011. <br />Total herbaceous productivity in 2012 measured on the shadscale bond release block was 225.4 <br />lbs/acre. Perennial herbaceous production on the shadscale bond release block in 2012 was <br />174.2lbs/acre. <br />Total herbaceous productivity measured in 2012 on the shadscale reference area was 27.48 lbs/acre. <br />The reclamation success standard requires the reclaimed area to meet or exceed 90% of the total <br />herbaceous productivity on the approved reference area at a 90% confidence interval (PAP pg. 12- <br />23). 90% of the total herbaceous productivity equals 24.73 lb/acre. The Division finds the shadscale <br />reclaimed areas exceeded the standard for herbaceous productivity and is considered successful for <br />2012. <br />Woody Plant Density: Shadscale Bond Release Block 2011 & 2012. <br />The reclamation success standard for woody stem establishment on the shadscale reclamation areas <br />is 800 stems per acre. <br />Sampling for woody stem establishment has consistently been difficult to achieve sample adequacy. <br />Due to the high standard deviation, sample adequacy was not achieved after the operator had collected <br />125 samples. SCC used the reverse null approach to demonstrate reclamation success. The Division <br />finds this approach acceptable. 2011 sample results for woody stem density on the shadscale <br />reclamation areas was 1800.4 woody stems per acre. The Division finds that the Shadscale Bond <br />Release block exceeded the standard for woody plant density establishment for 2011 and is considered <br />successful for 2011. <br />Sample adequacy was not achieved during the 2012 woody stem density sampling after the operator <br />had collected 119 samples. SCC used the reverse null approach to demonstrate reclamation success. <br />The Division finds this approach acceptable. 2012 sample results for woody stem density on the <br />shadscale reclamation areas was 1717.4 woody stems per acre. The Division finds that the Shadscale <br />Bond Release block exceeded the standard for woody plant density establishment for 2012 and is <br />considered successful for 2012. <br />Species Diversity: Shadscale Areas 2011 & 2012. <br />PAP page 14-24 states the requirements of the species diversity standard for the Roadside Mine. <br />Page 19 <br />