Brownfields

Chemicals of Concern

Chemicals of concern are identified through assessments due to the variety of sites that may be considered Brownfield Sites. During the Phase I environmental site assessment, possible contamination is identified due to the parcel's historical uses. For example, solvent and petroleum contamination may be identified as possible sources of contamination if a site was historically used as a gas station or maintenance facility. Possible asbestos and heavy metal contamination may be identified as a result of a fire that destroyed an abandoned building. The Phase II site assessment includes sampling to identify levels and locations of contamination from previous activities. The completed assessments will provide the Tribe with the information needed to conduct cleanup (if necessary) and redevelopment activities.

For more examples of possible contamination due to historical land uses, see Land Uses and Associated Contaminants, a document modified from Landcare Research: http://contamsites.landcareresearch.co.nz/what_is_a_contaminated_site.htm