Evaluation is essential for the development of effective bioremediation methods. Selective use of vascular plants and mycological swales in riparian zones shows considerable promise for the filtration of solids, sequestration of toxics, removal and metabolism of nutrients including some potentially toxic hydrocarbons, and retention of runoff water to minimize erosion. Most bioremediation installations continue to be constructed (and publicly funded) without monitoring results and learning from experience. Kwiaht is developing standards and methods for this task, and undertaking evaluations of “rain gardens” and bioremediation swales for county agencies, and nonprofits engaged in habitat restoration. A long-term study site has been established on private land at Cayou Lagoon, Orcas Island.