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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.

ES&C is a HUBZone certified consulting firm serving public and private sector clients nationwide from offices in VA and IN.

EURAS provides assistance to the industry and governmental agencies in the field of environmental toxicology and risk assessments and its scientific services are embedded in the sound academic experience of the core project team.

Biomonitoring service for freshwater and marine species biological testing, including acute, chronic and toxicity identification evaluations, using in-house culture of all test organisms.

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.

Contract research services offers an extensive range of ecotoxicology and biodegradation tests required for the chemical, agrochemical and pharmaceutical industries.

Specializing in health and environmental sciences including human health and ecological risk assessments, exposure assessments, toxicology, ecotoxicology, litigation support, and air quality impact assessments.