Scientists at BioAnalysts, Inc. have extensive experience in research and project management. Working on projects from complex scientific studies to major design and construction jobs, BioAnalysts manages research teams and technical staffs. In all studies, BioAnalysts uses the most advanced and accurate testing methods available. Their strongest featuSnorkelre is the experience and academic strength of key personnel.

The people in our firm have a diverse background in areas of expertise to serve our clients on fisheries related issues. BioAnalysts also regularly subcontracts with and maintains relationships with other professionals to complement our expertise in fisheries and aquatic science.


Tracy Hillman, Ph.D., CEo     [RESUME]
Dr. Hillman is an Ecological Society of America board-certified senior ecologist and has been with BioAnalysts since 1991. He has studied the effects of land-use activities such as forestry, grazing, mining, and hydroelectric development on streams and fish resources. He has authored more than 100 reports, including biological assessments, hatchery evaluations, recovery plans, experimental and statistical design, and technical reports for habitat conservation plans. Dr. Hillman has several years of experience designing, implementing, and managing projects in fisheries and aquatic ecology.

Albert Giorgi, Ph.D.    [RESUME]
Dr. Giorgi has been conducting fisheries research in the Pacific Northwest salmonid resources since 1979. From 1979-1990 he was employed by NOAA as a research scientist. His early research focused on marine fish early life history. From 1982 on, he has specialized in salmon ecology, specifically regarding fish passage issues, migratory behavior, salmon survival studies, and biological effects of hydroelectric dams, and water management. His research includes the use of radio telemetry, acoustic tags, and PIT-tag technologies. In 1990 he entered the private sector as a consultant. In addition to his research activities, he acts as a technical analyst and advisor to public agencies and private parties. He regularly teams with structural and hydraulic engineers in the design and evaluation of fishways and fish bypass systems.

Gary Johnson, M.S., B.A.    [RESUME]

Mr. Johnson has over 35 years of experience managing research projects related to the environmental effects of hydroelectric energy production.  Mr. Johnson was the technical manager for hydroacoustic monitoring and evaluation studies during the development of the surface flow bypass system at the Wells Dam from 1983 – 1992.  He served as manager of the Technical Services Division at BioSonics, Inc. before moving to the Bonneville Power Administration as a fisheries biologist.  At BPA, Mr. Johnson worked to integrate needs for safe fish passage with hydroelectric generation.  This led to Mr. Johnson being hired at PNNL to manage fish passage evaluations and bioengineering projects on the Columbia and Snake rivers.  He continued this type of work for BioAnalysts, Inc. before returning to PNNL to work on estuarine and fish passage studies. At PNNL, Mr. Johnson managed projects related to research, monitoring, and evaluation in the lower Columbia River and estuary, as well as research for the Department of Energy’s Water Power Program.  Since 2009, Mr. Johnson has facilitated the Expert Regional Technical Group for ecosystem restoration in the Columbia River estuary. In 2020, Mr. Johnson retired from PNNL and went to work part-time for BioAnalysts, Inc.

Mark Miller, B.S., President    [RESUME]

Mr. Miller is a fisheries biologist that has studied many aspects of salmonid ecology in the Pacific Northwest since he started with BioAnalysts in 1992. His research includes passage behavior and movement of juvenile and adult salmonids, habitat assessments, hatchery evaluations, and baseline environmental inventories. His research includes the use of biotelemetry methods, GPS, underwater observations, surgical and gastric tag implantation, and habitat survey methods.

John Stevenson, B.S., CFO    [RESUME]
Mr. Stevenson, a fisheries biologist with BioAnalysts since 1994, has a strong background in biotelemetry research and passage behavior of salmonids. He has studied juvenile approach behavior and survival during a multi-year study in the mid-Columbia River. His biotelemetry research includes studies that monitored fish passage and migration of adult Chinook, steelhead, bull trout, and lamprey as well as juvenile passage of Chinook, steelhead, and sockeye salmon. Prior to working with BioAnalysts, he gained experience in regional salmon passage issues while working for the Pacific Northwest Utilities Conference Committee.

Denny Snyder, B.S.    [RESUME]
Mr. Snyder, a fisheries biologist, has worked with BioAnalysts since 1999 and is experienced in aspects of fisheries and habitat research. His expertise is in biotelemetry, including the setup and monitoring of telemetry systems, fish and habitat surveys, and adult passage and juvenile survival studies. Mr. Snyder has several years of experience implementing and supervising field studies for BioAnalysts.

Kellee Murphy
Mrs. Murphy, with a paralegal and office management background, has been working with BioAnalysts as our business administrator for since 2004. She is responsible for the business accounting, contracting and budget management. As she is versed in contracting requirements, her experience includes State, Federal and County government agencies as well as private entities.

Nathan Murphy
Mr. Murphy has a background in technology, graphic design and research. He manages BioAnalysts’ extensive fisheries library, performs research functions, and produces report maps utilizing ArcGIS. With a broad skill set, Mr. Murphy has also engaged in field work and lead implementation of new technology since he joined the BioAnalysts team in 2014.