6. Summary of the Environmental Assessment

6.6 Cumulative Impacts

This strategic environmental assessment only examined cumulative impacts on components of the site previously identified as being of value. Based on existing knowledge of the Saint-Ours Canal National Historic Site as well as on the interaction of the development proposal with its environment, the following key points have been singled out for mention:

  • The natural vegetation of the site is concentrated on Darvard Island and is dominated by red pine. Although the creation of island pathways has brought the problem of trampling under control, natural regeneration remains fragile; organic material accumulates so slowly that it retards the development of an adequate litter for the healthy regeneration of undergrowth. Creating a cultural activity core around the superintendent’s house and increased use of Darvard Island are likely to aggravate the impact of trampling on soil erosion in certain areas.

  • Certain activities, along with intense use in certain places, could affect the long-term quality of the cultural landscape and of those buildings and structures that impart heritage value to the site. Taken altogether, these factors could negatively impact both the historic integrity of the site and commemoration efforts.

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