1992-06-05_GENERAL DOCUMENTS - C1981017 ‎(2)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 6/5/1992
• Doc Name: Bid Documents ‎(IMP)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

RECEIVED
in-cmnouncainioiLA
Mi ontinent Resources, Inc.
Coal Basin Mine MINED LAND F EOLARIATION DIVISION
Proposed Waste Disposal Area (Sutey Property) Colo. Dept. of Natural Resources
Re Cation Success Criteria
(December 18, 1984)
In addition to the revegilpecies
tation success criteria previously submitted for
vegetation cover and hbaceous production, the following criteria for
woody plant density and diversity are proposed for reclamation of
the waste disposal area (Sutey Property) currently proposed for devel-
opment:
Woody Plant Density
A standard of 250 live pants per acre is proposed for those portions of
the reclaimed waste disp sal area having slopes steeper than 2.5(h):l(v).
No woody plant density standard is proposed for those portions of the
reclaimed site less steep than 2.5(h):1(v).
This standard has been �erived by comparing the density of snowberry
versus the percent cover of snowberry for the nearby aspen vegetation
type and calculating an equivalent density for snowberry based on the
cover of snowberry for th meadow type, all based on data from the 1984
vegetation baseline inve tory. In round numbers: under the aspen,
snowberry constitutes about eight percent of the total vegetation cover
and a sampled density of bout 1,000 plants per acre; in the meadow type,
snowberry constitutes about two percent of the total vegetation cover,
which would be an equivalent density of 250 plants per acre. The
assumption is made here that there is an equivalent proportional
relationship in the mead w vegetation type between shrub cover and
density as in the aspen ve;etation type. It should be noted that only one
species is being compared, snowberry, which is the only significant woody
plant species in the meadow vegetation type.
Woody plant density wi4 be measured using randomly located belt
transects of five meters by 15 meters, according to the method described .
for determining woody plant density for the baseline inventory of the
aspen vegetation type.
Species Diversity
A standard for species diversity is proposed based on the Division's
diversity guideline and the vegetation baseline inventory data for cover
for the meadow vegetation type. The standard is as follows:
Based on post-mining vegetation cover data, the post-mining vegetation