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2011-06-27_REPORT - C1981014
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2011-06-27_REPORT - C1981014
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Last modified
8/24/2016 4:34:54 PM
Creation date
6/28/2011 9:33:13 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981014
IBM Index Class Name
REPORT
Doc Date
6/27/2011
Doc Name
2010 Revegetation Monitoring Report
From
Energy Fuels Coal Inc
To
DRMS
Permit Index Doc Type
Reveg Monitoring Report
Email Name
JHB
Media Type
D
Archive
No
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The reseeding efforts at the Loadout site have met with varying degrees of success, mostly <br />substandard. According to the 2005 Annual Reclamation Report, this site was originally seeded <br />with the permanent seed mixture in 1997 and reseeded again in 1999. Thus, the 2010 <br />reclamation monitoring effectively represents vegetation growth at the end of eleven complete <br />growing seasons since the last reseeding. The total cover value obtained from the 2010 <br />reclamation sampling averaged 51.30 percent. Since this value exceeds the probable <br />revegetation success standard of 36.45 percent, it can be concluded that the total plant cover on <br />this site would be considered to be successful. Since the actual "total plant cover" value (51.30 <br />%) for this reclaimed site exceeds the probable revegetation success standard for this site (36.45 <br />%), it can be concluded by direct comparison that the "total plant cover" in this reclamation <br />block appears to salsify the revegetation success standard with respect to plant cover. <br />The locations of the 10 cover transects are shown on Map 2, Southfield Loadout Area - <br />Vegetation Transect Location Map. The sample adequacy calculations in Table 2, Southfield <br />Mine Sample Adequacy Calculations, document that the number of samples required to <br />characterize this site with respect to plant cover at the 90 percent confidence interval was 2.0 <br />transects. <br />Production. The results obtained from the sampling of the 10 production transects on this area <br />in 2010 are summarized in Table 10, Loadout Reclamation - Production. The average <br />herbaceous forage production on this site averaged 31.60 g/1 /4m or 1,126.2 pounds of air -dry <br />forage per acre. Perennial grasses contributed 28.54 g/1 /4m or 90.29 percent; annual forbs <br />contributed 3.07 g/1 /4m or 9.71 percent. No annual grass or perennial forbs were encountered <br />in the production sampling on this area. <br />When sampled in 2006, the average total herbaceous forage production averaged 69.94 g/1 /4m <br />or 2,492.7 pounds of air -dry forage per acre. Perennial grasses contributed 34.3 g/1 /4m or 49.0 <br />percent; perennial forbs contributed 0.36 g/1 /4m2 or 0.5 percent; and annuals contributed 35.47 <br />g/1 /4m or 50.7 percent of the total forage production on this area. <br />The final revegetation success standard for forage production is to be based upon sampling of the <br />Loadout Reference Area and by using a direct comparison of these production values. No <br />reference area sampling was conducted during this interim monitoring and therefore, no absolute <br />revegetation success standard is available. However, based upon the previous reference area <br />sampling conducted on the Grassland Reference Area at the Southfield Mine Area conducted in <br />1987, when forage production averaged 74.08 grams / m or 660.1 pounds of air dry forage per <br />acre and in August of 1997 when production averaged 32.55 g/1 /4 m or 1,160 pounds of air dry <br />forage per acre, a relative comparison can be made. Using these historic reference area data, the <br />relative revegetation success standard for forage production would be approximately 25.54 g/1 /4 <br />m or 910 pounds of air dry forage per acre. These interim revegetation monitoring data suggest <br />that the forage production value for the Loadout Reclamation appears to satisfy the probable <br />revegetation success standard. Since the reclaimed area production value (31.61 g/1/4m <br />exceeds the probable revegetation success standard of approximately 25.54 g/1 /4 m or 910 <br />pounds of air dry forage per acre with 10 transects, the revegetation total forage production on <br />this site is considered successful. <br />12 <br />
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