2014-10-07_PERMIT FILE - C1981018A ‎(3)‎

• Permit No: C1981018A
• IBM Index Class Name: Permit File
• Doc Date: 10/7/2014
• Section_Exhibit Name: Section V. Mine Surface Facilities Reclamation Plan
• Media Type: D
• Archive: Yes

• (e) Sample adequacy for all measurements will be determined using the appropriate formula
found in Section 4.15.11 of the Regulations of the Colorado Mined Land Reclamation Board
for Coal Mining.
(f) Reclamation areas will be compared to their appropriate reference areas (perennial vegetative
cover and perennial herbaceous production) or technical standard (diversity and woody shrub
density). Revegetation success will be determined by comparing reference areas to
revegetated areas (Rule 4.15.7(2)(d)(i)). The statistical test used in the comparison will be
consistent with the methods described in Section 4.15.11 of the Regulations of the Colorado
Mined Land Reclamation Board for Coal Mining.
Sampling the numerous small area exemptions, drill pads, and similar type disturbances will require
a less straight forward approach than the larger sites. The methodology used needs to fit the
situation. The approach to sampling will include both systematic and random features. To
reasonably account for both roads and drill sites they must first be broken into their respective parts
to facilitate selection of random sample locations.
For example, if 5.7 miles of roads were included in a sampling each section would have a
designated value relative to its length. For instance, consider four roads totaling 1.6 miles with
lengths 0.42, 0.63, 0.22, and 0.33, Road A would be designated by the values 0-0.42, Road B
0.42-1.05, Road C 1.05-1.27, and Road D 1.27-1.60. Random numbers would be generated
• between 0 and 160 determining starting points for each transect. These locations would then be
located on a map and the points converted to useable coordinates such that they can be located in
the field with a GPS. The start point, left or right side of the reclaimed road, could be determined by
a simple coin flip. This method would also be used to determine if the transect is going diagonal in
or out on the road. Transects would be placed such that they cross the road at an angle for a total
distance of 50'. Their corresponding reference transect would start ten feet perpendicular to the
road disturbance in a `V' formation with the disturbance transect using the same angle of
divergence from the edge of the road.
Drill sites require a different approach in locating transects. First, transects will be randomly
assigned a drill site. Second, when the sampler is at the drill site, the site will be broken into a grid.
Random numbers will be selected to determine the starting location for the transect based on the
grid. The transect direction will be randomly selected using any direction to where the transect will
remain on the site. The reference transect will originate ten feet beyond any disturbance along an
extension of the line of the disturbance transect. It will diverge 10 degrees away from parallel from
the edge of disturbance.
Productivity quadrats would be placed at pre-determined points along the cover transects. Dry
weights from both the reclaimed and reference quadrats along paired transects will be compared
for statistical analysis.
~J
Technical Revision #65 (4/2008) V-64