This handbook is intended to serve as a resource to industry, regulators, land managers, and concerned citizens. The handbook presents background information on CBM activity in the Montana portion of the Powder River Basin (Study Area) while also presenting a number of Best Management Practices and Mitigation Strategies specific to CBM that have been successfully used throughout the United States. The handbook is not intended to be a prescriptive document that specifies required practices. Rather, it should be recognized that actual practices and mitigation measures used for a particular site or area will be largely dependant upon land and mineral ownership, geologic and hydrologic conditions (including depth of coal seams), soil types, local and regional wildlife issues, and other unique conditions.