The management plan for Manoir Papineau National Historic Site of Canada was subject to a strategic environmental review in accordance with the Cabinet directive on Environmental Assessment for Policy and Program Proposals, a federal self-assessment tool used by departments and agencies to broadly determine, assess and mitigate the environmental repercussions of projected development and activities. Under Parks Canada national management directive 2.4.2 on impact assessment, the scope of these environmental assessments also includes cultural resources so that only one report is required. The environmental impact assessment of the present management plan is contained in a separate document titled Examen environnemental stratégique du plan directeur du lieu historique national du Canada du Manoir Papineau, [Strategic environmental assessment of the management plan for Manoir Papineau National Historic Site of Canada]. Below is a brief summary of that report.
Management of the Manoir Papineau National Historic Site of Canada must take into account the fact that the site covers a limited area and is bordered by the Montebello station and Château Montebello, making access to the site difficult. The forest resources found on the site are part of a larger wooded area that extends beyond Parks Canada property.