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Iowa
Landfills Apply Tire Chips
Black Hawk County:
Leachate Control
A new 17-acre landfill cell is expected to use about 3 million
scrap tires in its leachate collection system when the project
is completed. The first phase of construction which began in
the Fall of 1999 consumed 500,000 tires in three-to-six inch
shreds which were spread over a clay liner on the top half of
the cell.
UT Tire
Recyclers, Des Moines is supplying the tire chips for the project.
The new Black Hawk cell was designed by Earth Tech of Waterloo,
IA and is expected to take two years to construct.
The
cell is being constructed at the Black Hawk Cty. Sanitary Landfill
outside Waterloo, Iowa. Originally, the new cell was designed
to use a sand filter, similar to those used in existing cells
on the 200 acre landfill, according to landfill management officials.
Based
on the successful use of tire chips in other Iowa landfills and
the availability of state funds, the Black Hawk Solid Waste Commission,
which manages the landfill, decided to use tire chips. Under the
program, Black Hawk is reimbursed $4/ton for using tire chips
through Iowa's end user incentive program. The net result is a
savings of $50,000, Black Hawk solid waste officials said.
South
Dallas Landfill Expansion Project
A total of about 8,000 tons of tire chips are expected to be used
in a new cell that is part of an expansion at an existing landfill
in Adel in Dallas county, west of Des Moines, according to county
officials.
As part of the expansion project, which began over
a year ago, a four-foot deep clay liner was installed and approximately
one-half of the South Dallas site was covered with a two-foot
layer of tire chips. Officials estimate that approximately 21
to 22 inches of tire chips would be needed to account for the
impacts of compression and compaction. Landfill operators have
been spreading garbage on the completed section of the landfill
since April of last year. The tire chips are three-to-four inches
in size and are being supplied by UT Tire Recycling, Des Moines.
The South Dallas project has been reimbursed $10,000 from the
Iowa end users incentive program it has used in the first phase
of the expansion.
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