2018-04-23_REVISION - C1981020 ‎(3)‎

• Permit No: C1981020
• IBM Index Class Name: Revision
• Doc Date: 4/23/2018
• Doc Name: Application
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Type & Sequence: SL3
• Email Name: CCW
• Media Type: D
• Archive: No

4.0 SUCCESS COMPARISON
A summary of the success comparison for the bond release block is provided on the following pages
in Table 1 and Charts 5 through 9. Table 1 gives a quick indication of the overall success of the revegetation
units compared to reference area data and/or standards. Charts 5 through 9 provide a visual display of
the same comparisons.
The demonstration of adequacy and a minimum of 15 transects in each unit allow for a direct
comparison for cover, production, and woody plant density per Rule 4.15.11 (2)(a). With regard to
perennial lifeform ground cover, the Phase III Bond Release Block passed the 2016 success criterion of
>_17.8% cover (90% of the reference area value) with 35.0% cover and passed the 2017 success criterion
of >_22.2% cover (90% of the reference area value) with 34.7% cover.
With regard to diversity, the revegetated area passed the three relative cover standards in both 2016
and 2017. The Phase III Bond Release Block exhibited five and six perennial species with a relative cover
of >_3.0%, respectively in 2016 and 2017, easily passing the success standard of three. The Phase III Bond
Release Block also exhibited 2 perennial cool -season grass species with >_3.0% relative cover in both 2016
and 2017, meeting the success standard of two. No single species in the Phase III Bond Release Block
exhibited >60% relative cover in 2016 and 2017.
The Phase III Bond Release Block passed the 2016 success criterion of >_66.4 pounds per acre of
perennial herbaceous production (90% of the reference area value) with 375 pounds per acre, and passed
the 2017 success criterion of >_211 pounds per acre of perennial herbaceous production (90% of the
reference area value) with 622 pounds per acre. The Phase III Bond Release Block passed the woody
plant density standard of >_500 stems per acre with 1,733 and 2,825 stems per acre, in 2016 and 2017
respectively.
This review of collected data demonstrates the success and utility of the revegetated area, especially
given vegetative ground cover and favorable results with regard to production and woody plant density.
Inspection of Plates 1 through 4 in comparison to Plates 5 and 6 for 2016 and Plates 7 through 12 to Plates
13 and 14 for 2017 provides visual evidence of this utility. Field studies have shown that the target
reclaimed plant communities have progressed sufficiently to be considered for Phase III Bond Release.
Ground cover of perennial plants within the reclaimed area is comparable to adjacent undisturbed native
communities and plant succession is occurring and progressing in a positive direction, indicating that plants
are self-sustaining.
CEDAR CREEK ASSOCIATES, Inc. 16 Munger Canyon Mine - 2016 & 2017
Revegetation Phase III Bond Release Report