Recommended

Not Recommended

Identifying the heritage value of a historic place and character-defining elements — materials, forms, location, spatial configurations, uses and cultural associa­tions or meanings — so that environmentally motivated modifications will not damage or eliminate them.

Undertaking environmentally motivated modifications before identifying those elements that are important in defining the overall character of the historic place.

Complying with environmental objectives in such a manner that character-defining elements are conserved and heritage value maintained. This could include protecting character-defining vegetation in which rare or endangered species nest.

Altering, damaging or destroying character-defining elements, or otherwise undermining the heritage value while making modifications to a historic place to comply with environmental objectives.

Working with environment officials to investigate systems, methods, devices or technologies that are just as or even more effective than those prescribed by regulation so that unnecessary interventions can be avoided.

Making changes to historic places without first exploring equivalent environmental protection systems, methods, devices or technologies that may be less damaging to character-defining elements and heritage value.

Reclaiming or re-establishing natural resources in a manner that promotes environmental protection, while conserving character-defining elements and maintaining the heritage value. An example could include reclaiming a character-defining wetland to meet ecological objectives, while re-establishing the feature as it appeared historically.

Making environmental modifications that do not provide a reasonable balance between improved environmental conditions and the conservation of character-defining elements and heritage value.