AMS has an established reputation along the North American West Coast as one of the premier consulting firms specializing in design and implementation of scientific investigations of pollutant impacts on aquatic habitats and ecosystems. AMS has designed and conducted impact studies using a variety of chemical and biochemical measures as well as ecological indications of impact at both the population and community levels. In all cases, our strategy is to apply the appropriate techniques in a cost effective manner to achieve the project objectives. This frequently results in using simple and straightforward measurements, rather than expensive state-of-the-art techniques, which provide acceptable scientific data at a reasonable cost.