_GENERAL DOCUMENTS - C1981017 ‎(247)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎ 1996 Correspondence
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

1. Two different methods of using the machine were tried, in
conjunction with various seeding techniques. In the first test,
the slope was hand seeded, and bales of straw were blown onto the
upper portion of the outslope. When it became obvious that the
straw could not be blown a sufficient distance down slope, one
string of each bale was cut, and the bale was kicked over the side
of the slope to spread itself as it broke apart. The modified
roller was lowered down the slope on a cable to create small
depressions in the slope and to crimp in the mulch. It was
observed that the roller created small depressions, but that the
dirt kicked up by the paddles caused minor surficial slides of the
outslope material, thus moving the seed away from the area being
treated. The crimping effect was minor, as the paddles tended to
cut "L" shaped depressions into the slope, rather than pushing the
mulch into the dirt.
Based upon these observations, modifications were made to the
methodology. The modified roller was sent down the slope a
distance of about 300 feet to create "L" shaped depressions, then
the slopes were hand broadcast seeded. Fertilizer was packed
between the flakes of the hay bales, which were pushed over the
slope in sufficient quantity until the slope was covered by the hay
mulch for the 300 feet. It was noted that the hay was wet and
heavy enough that it resisted the wind, and stayed on the slope,
acting as a protective cover for the seed. This technique was used
on the majority of the south and east facing slopes of the Mine 1
bench outslope. The commercial seed mix was used over the majority
of the slope, however seeds of native species collected on site
were also used.
A total of 45 to 50 pounds of native species seed heads were
collected at the site for the purpose of trying to propagate these
species in areas designated for revegetation. About 25 pounds each
of the grass Calamagrostis (Sp.?) and of the forb Senecio (Sp.?)
were collected in early September by cutting the seed heads with
pruning shears. The heads were allowed to dry, then seed was
separated by hand and stored in burlap sacks prior to
redistribution on the mine site. Both species have been observed
to be fairly successful on steep shaley hillslopes at elevations of
about 10,000 feet. Revegetation experiments were conducted using
this seed source.
About one half acre of outslope area adjacent to Road D between
Mine 1 and the Mine 2 Bath House access road was scarified using a
steel rake. Approximately 3 pounds of Calamagrostis seed was hand
broadcast onto the slope, and the area mulched by distributing weed
free straw over the surface of the area.
A similar experiment was conducted opposite the access road to the
Mine 2 Bath House. Again, Calamagrostis was seeded onto the area,
however, no surface treatment or mulch was applied at this area.
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