Issue 3 - the Montana Secretary of State Website

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protect human health or the environment adequately characterize the hydrogeologic
characteristics of the solid waste landfill facility.
(3) through (3)(e) remain as proposed.
NEW RULE XLVIII (17.50.1402) DEFINITIONS In this subchapter, the
following definitions apply:
(1) through (6) remain as proposed.
(7) "Existing disposal unit," when used in conjunction with "unit" or a type of
unit, has the meaning given in ARM 17.50.502.
(8) through (16) remain as proposed.
NEW RULE XLIX (17.50.1403) CLOSURE CRITERIA (1) through (3)(c)
remain as proposed.
(4) The owner or operator of a Class II or Class IV landfill unit, or a lateral
expansion of that an existing Class II or Class IV landfill unit, shall submit a closure
plan to the department for approval that describes the steps necessary to close all
Class II and Class IV landfill units and lateral expansions at the facility at any point
during their active life in accordance with the cover design requirements in (1) or (2),
as applicable. The closure plan must include, at a minimum, the following
information and any other information determined by the department to be
necessary to protect human health or the environment:
(a) through (11) remain as proposed.
NEW RULE L (17.50.1404) POST-CLOSURE CARE REQUIREMENTS
(1) Following closure of a Class II or Class IV landfill unit, the owner or
operator shall conduct post-closure care. Post-closure care must be conducted for
30 years, except as provided under (2), and consist of at least the following:
(a) and (b) remain as proposed.
(c) monitoring the ground water in accordance with the requirements of ARM
Title 17, chapter 50, subchapter 13, and maintaining the ground water monitoring
system, if applicable; and
(d) maintaining and operating the gas monitoring system in accordance with
the requirements of ARM 17.50.1106; and
(e) any other measure determined by the department to be necessary to
protect human health or the environment.
(2) through (2)(b) remain as proposed.
(3) The owner or operator of a Class II or Class IV landfill unit shall submit a
post-closure plan to the department for approval that includes, at a minimum, the
following information and any other information determined by the department to be
necessary to protect human health or the environment:
(a) through (8)(d) remain as proposed.
NEW RULE LI (17.50.1405) CLOSURE AND POST-CLOSURE CARE
REQUIREMENTS FOR CLASS III LANDFILL UNITS (1) A Class III landfill unit
closure plan required under ARM 17.50.508 must include, at a minimum:
(a) remains as proposed.
(b) procedures for grading and seeding to prevent erosion; and
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