Mich. Admin. Code R. 299.4914 - Landfill construction; bentonite geocomposite liners
Rule 914.
(1) A
bentonite geocomposite liner may be used in place of a compacted clay liner if
the combination of its thickness and hydraulic conductivity results in liquid
migration through the liner that does not exceed the rate of liquid migration
through 2 feet of clay that has a saturated vertical hydraulic conductivity
equal to 1.0 x 10-7 centimeters per second.
(2) A bentonite geocomposite liner shall
consist of sodium bentonite that is contained on each side by a fabric,
geotextile, or flexible membrane liner.
(3) A bentonite geocomposite liner shall be
seamed in accordance with the manufacturer's specifications so as to prevent
leakage at the seams.
(4) A
bentonite geocomposite liner shall not be laid during precipitation events and
shall be covered immediately by a flexible membrane liner or other protective
cover.
(5) A bentonite geocomposite
liner shall be installed in accordance with the manufacturer's specifications
and quality assurance quality control plans that are approved by the
director.
Notes
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