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REP46593
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REP46593
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Entry Properties
Last modified
8/25/2016 12:49:51 AM
Creation date
11/27/2007 11:13:57 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982055
IBM Index Class Name
Report
Doc Date
8/11/2005
Doc Name
2005 Revegetation Monitoring Report
From
Energy Fuels Mining Company
To
DMG
Permit Index Doc Type
Reveg Monitoring Report
Media Type
D
Archive
No
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reveals the number of samples required to describe the shrub density on this area at the 90 <br />percent confidence interval was 1,410.1 transects. However, since the reclaimed azea shrub <br />density at the Raton Creek Mine in 2005 exceeds the proposed shrub density standard in that at <br />least 167 shrubs per acre are to be found in at least 26.26 percent of the transects sampled is <br />greater than the revegetation success standazd (167 shrubs per acre,) it can be concluded that the <br />permanent reclaimed areas on the Raton Creek Mine exceeds the proposed shrub density <br />revegetation success standard and using the "reverse null hypothesis" contained in the Division's <br />proposed regulations, sampling can stop at 30 transects. <br />Species Diversity. The percent relative composition or cover values for the 30 cover transects <br />sampled at this site are found in Table 3, Raton Creek Mine - 2005 -Plant Cover. The original <br />revegetation success standards for species diversity at the Raton Creek Mine were described in <br />the previous reclamation monitoring report and in the recently submitted TR. As contained in <br />the TR, the minimum relative grass cover standard be proposed is 40 percent. The shrub density <br />cover standard is dropped as it is contrary with the Division's existing Vegetation Guideline and <br />the forb cover standazd found on page 522 of the Permit is unchanged. <br />Examination of the percent relative composirion values found in Table 3, Raton Creek Mine - <br />2005 -Plant Cover document that perennial grasses in 2005 contributed a total of 51.23 of the <br />total relative cover on this reclaimed site and in 2004 they contributed 52.62 percent of the total <br />relative cover at the Raton Creek Mine. In 2005, perennial forts contributed a total of 21.35 <br />percent of the total relative cover of this reclaimed site, while in 2005 they contributed 21.08 <br />percent of the total relative cover on this site. These data suggest that the proposed Species <br />Diversity standard relative to perennial grass and the existing forb cover standard have been <br />satisfied. <br />Conclusions <br />The monitoring data from both 2005 and 2004 document that the revegetation success criteria <br />for plant cover and forage production on the reclaimed areas sampled at the Raton Creek Mine <br />have been satisfied and that these two parameters satisfy the Permit revegetation success <br />standards for these two parameters for both the final two years of final bond release monitoring. <br />These monitoring data also document that the proposed shrub density and species diversity <br />standazds as contained in the recently submitted TR have both been satisfied. These data suggest <br />that all of the final phase III bond release sampling criteria are satisfied. <br />Grazing. Concurrent with this sampling effort, the Permittee points out that grazing is approved <br />in the Permit and asked that we provide recommendation on possible grazing levels based upon <br />the monitoring data collected from this revegetation sampling effort. According to Table 3, <br />Raton Creek Mine - 2005 Production, the average forage production on the large reclaimed <br />block was found to average approximately 1,045.3 pounds of air dry forage per acre. The azea of <br />this reclamation site was calculated with our GPS unit to equal approximately 27.0683 acres. <br />This means that on this block alone, there are approximately 28,294 pounds of useable forage. <br />
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