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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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submitted a formal Technical Revision to the Division to modify certain existing permit <br />requirements and utilize the Proposed Colorado Program Amendments in the 2005 sampling <br />effort. Agreement on the sampling methodology used in this evaluation has been previously <br />approved by the DMG in the Raton Creek Mine Permit and in other revegetation monitoring <br />efforts prior to initiating field sampling and approved by the Division for use at the Raton Creek <br />Mine for this sampling effort. In this evaluation, the vegetation parameters of production, plant <br />cover, species diversity and shrub density were sampled. These data were then utilized to <br />evaluate the successfulness of revegetation efforts with respect to cover, forage production, <br />species diversity, and shrub density. <br />Transact Locations. To ensure that all of the reclaimed areas at the Raton Creek Mine had an <br />equal chance of being sampled, the entire reclaimed area was treated as a single sample unit and <br />a totally randomized sampling effort was implemented. Utilizing the GPS unit, the extreme <br />north, south, east and west boundaries of the area to be sampled were identified according to the <br />1983 Colorado State Plan Southern Zone (NAD 83) coordinate system. The interval used in the <br />state plan coordinate system is based on foot increments. Given the typical real-time accuracy of <br />this GPS unit of plus or minus 18 inches, all of the transact locations were field located at a sub- <br />meter accuracy. <br />Once the boundaries of the reclaimed area were identified, then using a specially prepared <br />computer program which generates random coordinates, the potential transact location points <br />were identified. The transact coordinates that were within the existing reclamation blocks were <br />then entered into the GPS unit and the transact location starting points were marked in the field. <br />At each transact location starting point, the transact direction was determined by selecting a <br />random direction based on the degrees of the compass (1 to 360.Once the orientation of the <br />transact was determined, then the 50-meter tape was laid out along the transact alignment. All <br />transacts were kept within the reclaimed sample unit boundaries. In situations where the transact <br />placement resulted in the transact alignment crossing beyond the reclaimed area boundary, the <br />transact line was backed up for that portion of the transact which crossed the boundary line 180 <br />degrees. Where the 50-meter tape could not be placed within a nazrow reclaimed azea due to <br />boundary constraints, then the transact line was changed 90 degrees at the point where the <br />boundary line was crossed to ensure that the entire transact alignment was within the azea to be <br />sampled. <br />Plant Cover. Plant cover was evaluated by sampling along an outstretched 50-meter transact <br />tape. Along the outstretched tape, a total often previously identified and randomly selected <br />intervals were selected as the sample locations for plant cover sampling. These ten points were <br />then used as the sample locations for collecting plant cover. At each designated sample point, an <br />inclined metal ten-point frame, one meter in height was positioned perpendiculaz to the tape and <br />a sharpened metal rod was dropped. Each sampling point was sampled at ten-centimeter <br />intervals along the ten-point frame. Even numbers were sampled on the right-hand side of the <br />tape and odd numbers were sampled on the left-hand side of the tape. <br />Each observation was recorded as to the specific plant species encountered as the rod was <br />dropped. If no plant cover was encountered, then the observation was recorded as to the presence <br />
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