US based laboratory testing, field sampling and consulting services. Provides services in effluent bioassays, dredged sediment evaluations, toxicity identification, hydrographic surveys, ecological studies and assessment.

Consultants in avian and wildlife toxicology and ecology. Work has been conducted throughout the U.S. and Canada.

Employs aquatic toxicology methods to assess pollution control measures and product safety. Description of services.

Ecological Specialists, Inc. is a group of professional ecologists that specialize in freshwater mussels, other aquatic invertebrates, and fisheries.

Offers consultancy services in ecotoxicology, ecology, fishery science and risk assessment, support for product registration under REACH, approved training courses on test methods, test strategies and animal welfare in aquatic ecotoxicology.

Potesta and associates includes civil, geotechnical, environmental, mechanical, mining, and chemical engineers, as well as biologists, toxicologists, geologists, ecologists, surveyors, CADD designers, field technicians, and support personnel.