2014-01-28_REPORT - C1981028

• Permit No: C1981028
• IBM Index Class Name: Report
• Doc Date: 1/28/2014
• Doc Name: 2012 Annual Reclamation Report Review
• From: DRMS
• To: Coors Energy Company
• Annual Report Year: 2012
• Permit Index Doc Type: Annual Reclamation Report
• Email Name: JLE
• Email Name: SB1
• Media Type: D
• Archive: No

Ben Moline; CEC Page 3 of 5
2012; ARR Review
January 22, 2014
noted in the report were calculated using the pre -TR43 predictive equations and success comparisons were made
based on the those values. However, the Division calculated the success standards based the revised predictive
equations to evaluate the 2012 revegetation monitoring results based on the currently approved success standards.
The revegetation success standard for total vegetation cover was reported to be 32.47 %; ninety percent of this
value is 29.22 %. The revegetation success standard for total herbaceous production was reported to be 84.7
g /m ^2; ninety percent of this value is 76.23 g /m ^2. The Division calculated the success standard based on the
previously approved predictive equations and found the success standards to be 29.70% total vegetation cover and
64.81 g /m ^2 for total herbaceous production. There is a discrepancy between the success standard calculated by
the Division and those cited in the 2012 ARR. Also; using the TR43 revised equations, the Division found the
total mean vegetation cover success standard to be 29.93 %, and the total herbaceous production standard to be
62.97 g /m ^2. See Table 1. below for a summary of this information.
Table 1. Reported and Calculated Success Standards for Vegetation Cover and Herbaceous Production.
For the purposes of reviewing the annual reclamation report, statistical adequacy was not evaluated.
Area 23; .66 Acres
Sample size was reduced to five cover transects and five production transects given the small size of this parcel.
Total mean vegetation cover for this area was reported to be 32 %. The total mean vegetation cover reported
includes cheatgrass (Bromus tectorum) a State listed noxious weed that cannot count toward meeting the
revegetation success standard. If the mean cover of .4% attributed to cheatgrass is subtracted from the total mean
vegetation cover percentage, this would yield 31.6% cover. This is greater than 90% of the success standards
calculated by the Division. Prairie sandreed (Calamovilfa longifolia) was the most dominant plant species
encountered within this transect. Sand bluestem (Andropogon halhi), sideoats grama (Bouteloua curtipendula)
and blue grama (Bouteloua gracilis) were also dominant plant species. Vegetation litter comprised 52 % ground
cover in this area. Bare soil accounted for 16% ground cover.
Total herbaceous production was reported to be 143 g /m ^2. This is greater than 90% of the success standards
calculated by the Division. According to the report, 100% of the production was comprised of perennial grasses.
Six graminoid species were encountered within this area. Five of the six species were native and one was
introduced. Five warm and one cool season grass was encountered. Three warm season perennial grasses met the
relative importance criteria to be counted toward species composition success. Zero perennial cool season grasses
met the relative importance criteria to be counted. This area did not meet the revegetation success criteria for
species composition for 2012.
Area 29; 8.1 acres
Total mean vegetation cover for Area 29 was reported to be 30.6 %. The total mean vegetation cover reported
includes cheatgrass a State listed noxious weed that cannot count toward meeting the revegetation success
Total
90% of
90% of
Mean
Herbaceous
Cover
Production
Predictive
Vegetation
Production;
Standard;
Standard;
Equation /Source
Cover; %
g /m ^2
%
g /m ^2
Pre -TR43, DRMS
29.70
64.81
26.73
58.33
Post -TR43, DRMS
29.93
62.97
26.94
56.68
Pre -TR43, CEC
32.47
84.70
29.22
76.23
For the purposes of reviewing the annual reclamation report, statistical adequacy was not evaluated.
Area 23; .66 Acres
Sample size was reduced to five cover transects and five production transects given the small size of this parcel.
Total mean vegetation cover for this area was reported to be 32 %. The total mean vegetation cover reported
includes cheatgrass (Bromus tectorum) a State listed noxious weed that cannot count toward meeting the
revegetation success standard. If the mean cover of .4% attributed to cheatgrass is subtracted from the total mean
vegetation cover percentage, this would yield 31.6% cover. This is greater than 90% of the success standards
calculated by the Division. Prairie sandreed (Calamovilfa longifolia) was the most dominant plant species
encountered within this transect. Sand bluestem (Andropogon halhi), sideoats grama (Bouteloua curtipendula)
and blue grama (Bouteloua gracilis) were also dominant plant species. Vegetation litter comprised 52 % ground
cover in this area. Bare soil accounted for 16% ground cover.
Total herbaceous production was reported to be 143 g /m ^2. This is greater than 90% of the success standards
calculated by the Division. According to the report, 100% of the production was comprised of perennial grasses.
Six graminoid species were encountered within this area. Five of the six species were native and one was
introduced. Five warm and one cool season grass was encountered. Three warm season perennial grasses met the
relative importance criteria to be counted toward species composition success. Zero perennial cool season grasses
met the relative importance criteria to be counted. This area did not meet the revegetation success criteria for
species composition for 2012.
Area 29; 8.1 acres
Total mean vegetation cover for Area 29 was reported to be 30.6 %. The total mean vegetation cover reported
includes cheatgrass a State listed noxious weed that cannot count toward meeting the revegetation success