Administrative Rules of Montana
Department 17 - ENVIRONMENTAL QUALITY
Chapter 17.50 - SOLID WASTE MANAGEMENT
Subchapter 17.50.10 - Landfill Location
Rule 17.50.1007 - SEISMIC AREAS

(1) A new Class II landfill unit, or a lateral expansion of an existing Class II landfill unit, may not be located in a seismic impact zone, unless the owner or operator submits to the department for approval a report prepared by a Montana licensed professional engineer demonstrating that all landfill containment structures including, but not limited to, the landfill liner, leachate collection and removal system, and surface water control system are designed to resist the maximum horizontal acceleration in lithified earth material for the site. The owner or operator shall place the approved report in the operating record and notify the department that it has been placed in the operating record.