Dan Hennessy

Senior Environmental Scientist

MS, Fisheries Science, University of Washington, 1998
BS, Environmental Science, Western Washington University, 1992
BA, Social Science, University of California, Irvine, 1990

Joined Floyd|Snider: 2021

Dan Hennessy is a Senior Environmental Scientist who has worked for a diverse range of clients to address environmental assessment, remediation, restoration, and resource management problems at dozens of sites across the United States. He has led and supported teams developing and negotiating study designs for complex site assessments, performing safely implemented field programs, conducting risk assessments and remedial investigations, and monitoring long-term compliance. Dan is also a skilled aquatic toxicologist with extensive experience addressing chemical mixtures, site-specific bioavailability, benthic toxicity, and bioaccumulation in fish and invertebrates.

Professional Strengths

Multidisciplinary scientist/risk assessor skilled at integrating site information and applying strategic thinking to meet project goals

Understanding of different stakeholder perspectives from working with a diverse range of clients from government and regulated industries

Knowledgeable about federal and state regulatory processes, cleanup requirements, documentation and methods for sampling and analysis, reporting requirements, and agency information management systems

Skilled at graphical and statistical analyses to identify patterns in environmental datasets