2018-09-04_PERMIT FILE - C1981019A

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/4/2018
• Doc Name: Volume 1 Rule 4
• Section_Exhibit Name: 4.01 Throuugh 4.30
• Media Type: D
• Archive: Yes

RULE 4 PERFORMANCE STANDARDS
location. Damaged roots will be clean-cut with a sharp blade prior to planting. If any
circling or kinked roots are discovered during the transplanting procedure, they will be
severed to prevent future girdling of the plant. Every effort will be made to orient the tree
or shrub in the same direction, relative to the sun, as it was facing in the previous location.
Plantings will be performed in the fall by properly trained personnel. Serviceberry and
chokecherry planting densities will be one plant every four linear feet (1/2 serviceberry,
1/2 chokecherry) within a row.
g) Colowyo will place contour furrows immediately above approximately every third
fabric row (approximately every 66 feet). The trial will exhibit alternating bands of
modified Sagebrush Steppe mix (approximately 17 feet), fabric/containerized plantings (4-
5 feet wide), modified Sagebrush Steppe mix (approximately 17 feet), fabric/containerized
plantings (4-5 feet), modified Sagebrush Steppe mix (approximately 12 feet) contour
furrow (approximately 5 feet). This pattern should allow for specific emphasis on
containerized plantings establishment while minimizing the risk of excessive erosion
during the period of early establishment of the trial area.
h) An "elk proof' exclusionary fence will be erected around the perimeter of entire trial
area to protect it from ungulates.
i) In the event of stand failure the area will revert back to sagebrush steppe for purposes
of Phase III bond release in the future, with the exception that the requirement for 50% of
the required 375 shrubs in this area be big sagebrush (Section 4.15.8), this requirement will
reasonably be dropped, due to the reduction in sagebrush seed included in the mix applied.
3) Colowyo agrees to establish one small (one acre) tall shrub establishment site with thin topsoil
conditions. The location of this area will be in the immediate proximity of the South Taylor X
coal pod as portrayed below and on Map 28B. The location for this trial represents elevation and
aspect characteristics that are very similar to the majority of the tall shrub areas disturbed in the
South Taylor area. Slope characteristics are more moderate than the areas disturbed, but for
purposes of implementing and monitoring this trial it was determined essential that access and
stability of the test location be manageable. Actual results from the trial should yield information
that can be used to apply additional stability and/or sediment control measures on larger areas if
this attempt is successful.
a) The area will be regraded in accordance with PMT requirements. Additional ripping of
the overburden material will be conducted by a dozer to a depth of approximately four feet
to ensure the material is in a loose, rough condition to encourage infiltration of
rain/snowmelt and root development. Overburden with a significant coarse fragment
component is desireable.
b) The area will be tested for overburden suitability as per requirements.
c) An approximate average of four inches of topsoil will be placed to replicate common
topsoil depth conditions in the surrounding area in stands of this nature. Once the topsoil
has been placed, it will be roughened with a disc (pulled by a dozer or other appropriate
machine) to ensure the material is in a loose, rough condition to encourage infiltration of
rain/snowmelt and root development.
d) The Sagebrush Steppe mix has been modified to reduce the volume of "low shrubs" in
favor of tall shrub components of the mix. The grasses currently included in the mix were
reduced to minimize competition, while still providing some soil stabilization function.
The entire trial area will be seeded with the modified Sagebrush Steppe Mix as seen below.
Rule 4 Performance Standards 4-58 Revision Date: 5/25/18
Revision No.: RN -07