Archaeology and Historic Preservation Specialists
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Here are brief descriptions of our consultants. Please feel free to contact us.

Kelly R. Bush

Principal Investigator



President of Equinox Research and Consulting International Inc. (ERCI), Kelly Bush brings twenty-nine years of relevant archaeological experience to this team. In her position with ERCI, Ms. Bush designs archaeological investigations for all sizes of projects. She also serves as Principal Investigator, facilitating all aspects of archaeological investigations including initial site visits, project design, tribal consultation, evaluation of properties, management recommendations, and reporting. Ms. Bush has successfully provided coordination for Traditional Cultural Properties studies, written numerous Historic Properties Management Plans, and provided cultural resource management training to local and tribal governments. Ms. Bush earned her Bachelor of Arts in Archaeology from Simon Fraser University in Burnaby, B.C. She has taught archaeology in both classroom and field school settings at Western Washington University in Bellingham, Washington, where she received her Master of Arts degree in Anthropology.

Robert H. Gargett, PhD

Senior Editor and Project Archaeologist


Dr. Robert H. Gargett earned a BA (Hons) in Archaeology from Simon Fraser University and a PhD in Anthropology from the University of California at Berkeley, specializing in Zooarchaeology and Taphonomy. In a career that spans more than 30 years he has taken part in prehistoric archaeological survey and excavation in coastal and southern central British Columbia, California's Northern Coast Ranges, Sierra Nevada Foothills and Great Basin, the Czech Republic (Middle Paleolithic), France (Mesolithic), and Israel (Middle Paleolithic).
Alongside an academic career in which he published a book and numerous referred journal articles on vertebrate taphonomy and site formation processes in Europe and Western Asia, Polynesia, and eastern Australia, in his CRM role Rob has  authored and contributed to more than 20 cultural resource management reports on the precontact archaeology of California and British Columbia. Since joining ERCI in 2014 Rob has written and edited more than 100 reports dealing with Washington's Island, King, San Juan, Skagit, Snohomish and Whatcom Counties.
Rob is a past editor of Australian Archaeology, was a project archaeologist and laboratory director for Pacific Legacy Inc., Santa Cruz, California, and technical writer for the archaeology group at AMEC Foster Wheeler, Burnaby, British Columbia.
Dr. Gargett has generalist knowledge of comparative North American terrestrial vertebrate osteology, expert knowledge of zooarchaeological method and theory, and specialist knowledge of Late Pleistocene Central European ursid osteology and Middle to Late Pleistocene microtine fauna of Western North America.

Alyson M. Rollins

Biological Anthropologist and Archaeologist


Alyson Rollins has been a professional Biological Anthropologist with field and laboratory experience related to human osteology since 1999. She received her Bachelor's degree in Human Biology from Lewis-Clark State College in Lewiston, ID, and her Master's degree in Anthropology from Western Washington University.  She has particular expertise in the identification of fragmented or partial human skeletal remains in an archaeological context.  Ms. Rollins has been teaching Anthropology at Whatcom Community College since 1999 and at Western Washington University since 2005. She also has extensive experience consulting with Native American Tribes, Museums and Universities regarding NAGPRA issues and the repatriation of human remains and artifacts.

Sarah E. Johnson

Senior Archaeologist


Sarah Johnson has worked in cultural resource management throughout Washington, Colorado, Wyoming, Montana, North Dakota, and British Columbia, Canada since 2005. She first worked for ERCI in 2010 on a number of survey and excavation projects in Island, Snohomish, Skagit, and Whatcom counties and now works as a crew chief, lab director and field director. She received her B.A. in Anthropology from Western Washington University in Bellingham, WA and a Master of Arts in Archaeology from Simon Fraser University in Burnaby, B.C. The tile of her thesis is “A Tla’amin Cultural Landscape: Combining Traditional Knowledge with Archaeological Investigation in Grace Harbour, Desolation Sound, B.C.” 

Ms. Johnson Humphries has experience identifying and recording long-house villages, inter-tidal fish traps, stone circles, lithic quarries, campsites, and rock art panels; as well as historic trails, railroads, and homesteads. She also has experience consulting with Native American Tribes, Museums and Universities regarding NAGPRA issues and the repatriation of human remains and artifacts.

For ERCI, Ms. Johnson Humphries conducts initial site visits, designs projects, coordinates with clients and affected tribes, provides management recommendations, leads and trains field crews, conducts field testing, monitoring and post impact assessments, and writes technical reports, monitoring plans and unanticipated discovery protocols. She has held excavation permits in Washington and Colorado.

Ms. Johnson Humphries is an enrolled tribal member of the Samish Indian Nation of Anacortes, Washington.

 Susan Larsen



Susan Larsen earned a Bachelor of Arts in both Anthropology and Geology in 2013, and a Master of Arts in Anthropology in 2015 from Western Washington University. In her Master’s thesis, ‘Recrystallization of Biogenic Aragonite Shells from Archaeological Contexts and Implications for Paleoenvironmental Reconstruction’, she analyzed the effects of heat on the carbon and oxygen isotope ratios of aragonite clam shells native to the Northwest Coast, using X-ray Diffraction, Energy-Dispersive X-ray Analysis, and interpretation of Mass Spectrometry results, and found significant alteration of isotope ratios with various degrees of heating. For two years Susan worked on and managed the analysis of a large archaeological shell collection from the Tse-Whit-Zen Village Site (45CA523) for Dr. Sarah Campbell as part of a larger, collaborative study. She has been working in Cultural Resource Management since 2015. Susan’s research interests include paleoenvironmental reconstruction, geoarchaeology, recrystallization analyses, and laboratory methods.

Kate Shantry



Kate Shantry began her cultural resources management career in Puget Sound in 2001 and has participated in a wide array of projects in Alaska, Arkansas, California, Idaho, Oklahoma, Oregon, Washington, and southwestern France in private sector and academic contexts. Hailing from Burien, Washington, Kate studied anthropology at the University of Washington. A field school off Kodiak Island in Alaska was enough for Kate to get her feet wet before venturing to graduate school at Western Washington University, where she earned a master’s degree in archaeology. Following graduate school, she worked in the Bay Area before heading back up to Seattle in 2006. Since that time, Kate has completed more than 100 archaeological assessment, data recovery, monitoring, and survey reports. Kate’s primary research interests include Salish Sea labrets, thermal feature analysis, fire modified rock studies geomorphology of riverine and delta sites, and settlement patterning in the Late Period in Puget Sound. Kate recently co-authored an article in the Journal of Island and Coastal Archaeology entitled, “From Labrets to Cranial Modification: Credibility Enhancing Displays and the Changing Expression of Coast Salish Resource Commitments.”

Laura Syvertson



Laura Syvertson first worked for ERCI as an archaeological technician in 2014. She received her B.A in Anthropology from Western Washington University in Bellingham, WA in 2012, and has worked as an archaeologist throughout Washington and Oregon since. Her experience spans both federal archaeology and private CRM. Laura also has extensive classroom, lab, and field experience identifying animal remains, particularly shell and fish remains. She received a M.S. from Portland State University in 2017, including completing her thesis entitled “Sampling Fish: A Case Study from the Čḯxwicən Site, Northwest Washington”.

 Kare Atwell Toor

GIS Technician and Administrator


Kare Toor earned her B.S. in Biology in 1995 from Southern Connecticut State University, focusing on Botany, Mycology, and Entomology (Odonata).  After getting her degree, Kare used her organizational and investigative skills in administrator and manager roles for a range of industries including civilian operations for the military.  Kare joined ERCI in early 2013 as an administrator.  However, since then, her roles have progressively expanded to provide direct support to our field operations.  Document control, background research and GIS development are now the mainstays of her job as she enhances our field crew's ability to collect data with ever increasing efficiency and accuracy.