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REP23289
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REP23289
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Entry Properties
Last modified
8/24/2016 11:55:44 PM
Creation date
11/27/2007 3:40:03 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980006
IBM Index Class Name
Report
Doc Date
9/25/2006
Doc Name
2006 Revegetation Monitoring Report /Year 10
From
Energy Fuels Coal Inc
To
DRMS
Permit Index Doc Type
Reveg Monitoring Report
Media Type
D
Archive
No
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• The revegetation forage production success standazd for this area is 6.11 g/1 /4mZ or 217.8 <br />pounds of air-dry forage per acre. Since this site averaged 22.10 g/1/4mZ or 787..3 pounds of air- <br />dry forage per acre, it can be concluded by direct comparison that this area satisfies the <br />revegetation success standard with respect to total herbaceous forage production. <br />When RMR sampled this site in 1996, they reported that the average total herbaceous forage <br />production on this reclaimed site averaged 17.24 g/1/4mZ or 614.4 pounds of air-dry forage per <br />acre. When ESCO sampled this site in 1999, they reported that the total herbaceous forage <br />production averaged 19.9 g/1/4m2 or 709.2 pounds of air-dry forage per acre. In the 2005 <br />sampling of this site, forage production averaged 28.60 g/1/4mZ or 1,019.3 pounds of air-city <br />forage per acre. <br />The locations of the 30 production transects sampled on this site in 2005 are shown on Map 3, <br />Pre-1986 Reclamation -Vegetation Transect Location Map. Copies of the individual field data <br />sheets for the forage production sampling of this site are found in Appendix E -Copies of Pre- <br />1986 Reclamation -Production Field Data Sheets. The sample adequacy calculations in Table 2, <br />Marr Mine Sample Adequacy Calculations, document that the number of production transects <br />required to characterize this site at the 90 percent confidence interval was 26.8. Since the <br />reclaimed area production value (28.60 g/1/4mZ) exceeds the revegetation success standard of <br />6.11 g/i/4mZ with 30 transects, as allowed in the RMS's reverse null statistical analysis, it can be <br />concluded that this area satisfies the sample adequacy requirements with respect to forage <br />production. <br />Shrub I)eusit~i. The shrub density counts obtained from the 30 belt transects taken in this area <br />are summarized in Table 9, Pre-1986 Reclamation -Shrub Density. The average shrub density <br />was determined to equal 59.27 shrubs per 100 mZ or 2,398.7 shrubs per acre. Wyoming Big <br />Sagebrush, Woods Rose and Rubber Rabbitbrush were the most commonly encountered shrubs. <br />The revegetation shrub density success standard for this area is 1,500 stems per acre. Since this <br />site averaged 2,398.7 stems per acre, it can be concluded that this area satisfies the revegetation <br />success standard with respect to shrub density. <br />When RMR sampled this site in 1996, they reported that the shrub density averaged 31.2 shrubs <br />per 100 mZ or 1,263 shrubs per acre. When sampled in1999, ESCO reported that the shrub <br />density averaged 36.4 shrubs per 100 mZ or 1,473.1 shrubs per acre. In 2005, the shrub density <br />on this reclaimed site was found to equal 65.27 shrubs per 100 mZ or 2,641.5 shrubs per acre. <br />The locations of the 30 shrub density transects sampled on this site are shown on Map 3, Pre- <br />I986 Reclamation -Vegetation Transect Location Map. Copies of the individual field data <br />sheets for the woody plant density sampling of this site are found in Appendix E -Copies of Pre- <br />1986 Reclamation -Shrub Density Field Data Sheets. Examination of the sample adequacy <br />calculations in Table 2, Marr Mine Sample Adequacy Calculations, reveals the number of <br />samples required to describe the shrub density on this area at the 90 percent confidence interval <br />was 62.5 transects. Since the actual shrub density counts on the reclaimed site (2,398.7 stems <br />per acre) exceeds the approved standard (1,500 stems per acre), using the RMS's recently <br />adopted regulations and the reverse null statistical approach, it can be determined that sample <br />10 <br />
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