Staff

Photo: Minesh Bacrania

Dee Ann Espinoza

eMBA, MA, RPA

Chief Executive OfficerContract AdministratorPrincipal Investigator

Dee Espinoza has more than 21 years of hands-on experience as a Cultural Resource Principal Investigator and Project Director in the Plains, Southwest, and Gulf States. During her career, she has supervised and performed cultural research studies on various land jurisdictions for both public and private entities. She meets the SOI’s Qualifications for Archaeologist (Prehistoric and Historic) and Historian. Her particular archaeological specialty is in faunal analysis and human osteology. She is also the founder, owner, and CEO of ECS.

She is currently the contract administrator for 20 on-going projects in various aspects of cultural, natural, and environmental services. In the past nine years, she has administered more than 245 projects with federal, state, tribal, and commercial clients.

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Alvin J. Banguilan

MA, RPA

Senior Principal InvestigatorProject Management

Alvin Banguilan serves ECS as a Senior Principal Investigator and brings over 30 years of cultural resources management experience from a variety of projects in the energy, transportation, infrastructure, telecommunications, disaster response, and government (local, state, federal, and military) sectors. Mr. Banguilan meets the Secretary of Interior’s Standards for Archaeology and is a Registered Professional Archaeologist. His management and supervisory experience include program and project management; marketing and business development; coordinating teams of in-house staff and sub-consultants; ensuring timely delivery of services and deliverables; overseeing project billing and collections; monitoring budgets; and preparing proposals, cost estimates, business plans, research designs, work plans, contracts, and technical reports.

His experience includes projects completed throughout the Southeast, Middle Atlantic, Southwest, Northern Plains, Columbia Plateau, Puerto Rico, and the U.S. Virgin Islands. He possesses a clear understanding of NHPA, NAGPRA, and NEPA and their respective implementing regulations. Alvin’s technical specialties include prehistoric archaeology, coastal & shoreline resources, disaster & emergency response, forensic archaeology, and oil & gas projects.

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Cathy Cullicott

ECS Operations ManagerCorporate Safety and Diversity Officer

Cathy Cullicott has spent more than 15 years working as a professional geologist in the Rocky Mountains and Colorado Plateau. She has worked for clients ranging from small businesses and non-profits to governments of all levels (local, state, Tribal, federal) to national-level organizations. Ms. Cullicott’s environmental work experience is similarly diverse, ranging from in-the-trenches cleanup to regulatory review to national-level policy and advocacy work. She is also ECS’ Corporate Safety and Diversity Officer.

Ms. Cullicott has a long history of teaching math and science to tribal populations and heads up ECS’ tribal engagement efforts. She believes that by working together and leveraging our unique strengths, approaches, and ideas, we are stronger, and we can come up with solutions together that no one individual could have developed alone.

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Matthew Sayre

Postgraduate Diploma Pure Mathematics, LSE

GIS ManagerDeveloper and Programmer

Matthew Sayre has over 16 years of experience in geospatial technology and its application in the fields of natural and cultural resource management, environmental science, land management, and engineering. He specializes in incorporating spatial data and related technologies into streamlined workflows for interdisciplinary land and resource management projects. Mr. Sayre’s areas of expertise include geospatial analysis and modeling, LiDAR processing and 3D visualization, custom cartography, interactive web map/application development, geospatial data analysis, and programming for GIS in SQL, PostGIS/PostgreSQL, and Python in the individual and enterprise environment (also programming Python, Haskell, R, C++, C, VBA, PHP, Bash, Javascript, React.js, and D3js). He can also program in Access and Excel macros, SQL, and Visual Basic for Applications (VBA) code to write scripts for Microsoft Access. He is experienced in ArcGIS, ArcGIS Pro and QGIS.

Mr. Sayre is currently migrating the company to ArcGIS Online/Field Maps/Survey123 for all data collection, creating new user interfaces (UI) for all technical staff. He has also worked as a Forest and Engineering Technician for the USFS and the BLM as an Engineer Technician. Mr. Sayre’s diverse technical background allows him to find integrative and efficient solutions to a wide array of complex resource management needs.

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Garrett Silliman

MA Archaeology; MA Cert in GeoSpatial Science; PM Certification

Senior Principal Investigator

Garrett Silliman serves ECS as a Senior Principal Investigator with nearly 30 years of cultural resource management experience within the renewable energy, federal government, and transportation sectors. For the past 18 years he has led and managed projects requiring Section 106 and 110 of the National Historic Preservation Act (1966), Native American consultation, NEPA, and Archaeological Resources Protection Act (1979) assistance. Mr. Silliman is a Registered Professional Archaeologist and exceeds the Secretary of Interior’s standards for the conduct of archaeological investigations per 36 CFR Part 61.

While his expertise is national in scope, his research interests focus primarily on the interpretation of subtle-pattern historical archaeology sites using the integration of systematic metal detection, GIS, and historical research. Garrett’s technical specialties include conflict archaeology, metal detection, lithic studies, historic landscapes, historical research, remote sensing, and cemetery studies. Mr. Silliman also serves as an adjunct lecturer and research associate for the North Carolina State University and has taught classes in World Archaeology, Public Archaeology, and Cultural Resource Management.

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