About Us

EAS Staff

Environmental Assessment Services, LLC (EAS), located in Richland, Washington, provides high-quality environmental science, field technology, and other technical services to help our clients meet often-complex environmental regulations, policies, and other challenges while maintaining operational objectives. Established in 2005, we serve clients nationwide in a wide range of settings and operations. EAS is the prominent small business collecting the relevant biological data in support of the U.S. Department of Energy's (DOE) environmental cleanup mission on the Hanford Site, Washington. In 2009, EAS was honored with an Entrepreneurial Award from the Richland (Washington) Rotary "for demonstrating an exemplary spirit of entrepreneurial success."

EAS provides a highly skilled and experienced technical team dedicated to exceeding our clients’ expectations. Areas of expertise include

  • Ecological and Cultural Resource Site Characterizations
  • Environmental Planning, Protection, and Compliance
  • Remedial Investigation/Feasibility Studies
  • Environmental Restoration; Mitigation Strategies
  • Ecological and Human Health Risk Assessments
  • Natural Resource Damage Assessments
  • Fish, Wildlife, and Plant Surveying and Monitoring
  • Field Sampling of Environmental Media (Water and Land)
  • Sample Accessioning and Data Management

Our technical support staff includes specialists in operations, safety, finance, contracts, business administration, and communications, who help ensure our high standards are maintained.
Contact: Brett Tiller, CEO/Principal Scientist, (509) 948-5764; brett.tiller@easbio.com

Corporate Standards

EAS maintains the highest standards of ethical conduct at all times. We comply fully with all applicable federal, state, and local laws, regulations, and industry best practices. Along with helping others recognize and respond to environmental impacts, we are just as dedicated to our own environmental stewardship and waste minimization practices.

EAS is committed to the successful management of health, safety, environmental, and quality assurance values and objectives. As an environmental management company, we recognize the importance of ensuring environmental integrity and safe work conditions for all employees, clients, and the public. EAS actively promotes and implements systems and actions that reduce risks, foster safe and compliant work, and resolve environmental issues.

EAS Environmental Policy
Selected Publications
Company Fact Sheet

Technical Staff Summaries

Brett Tiller, CEO/Principal Scientist – more than 20 years of experience conducting environmental surveillance (developing and performing studies that characterize dispersion of contaminants in the environment); characterizing wildlife populations; and performing biological resource reviews on aquatic and terrestrial ecosystems throughout the United States.

Robin Tiller, Chief Financial Officer – more than 20 years of experience in accounting and financial management, as well as contracts management and strategic planning. Responsible for all financial matters and planning and execution of all administrative functions.

Kevin Cranna, Deputy Operations Manager - Responsible for overseeing the company's policies and procedures; setting and maintaining quality, safety and environmental standards; training; and overseeing laboratory operations and technicians. Develops systematic approaches for rapid sample collection events, as well as quality assurance/quality control methods for business and project functions.

Dennis Dauble, Senior Environmental Scientist - fisheries biologist with 39 years of experience involving Endangered Species issues, Columbia River fish passage and behavior, ecological risk assessment, and ecological monitoring.

Ken Gano, Senior Environmental Scientist – natural resource specialist with 38 years in ecological studies, environmental restoration, ecological resource reviews, mitigation planning, and environmental regulations.

Cole Lindsey, Senior Environmental Scientist - research and monitoring of wildlife populations (avian species, mammals, fish, amphibians, macroinvertebrates); surveying and documenting wildlife distributions, area-use patterns, and relative abundances, along with quantifying and monitoring biologically important metrics.

John Nugent, Senior Environmental Scientist – more than 25 years of experience in environmental sampling, research, and characterizations; GIS/GPS expert (geographical information systems/global positioning systems). Eighteen years of experience in terrestrial flora and faunal surveys, wetland delineations, hydrology, and fisheries.

William Rickard, Senior Environmental Scientist - more than 60 years in terrestrial ecology, botany, vegetation restoration and radioecological studies.

Paul Wagner, Senior Environmental Scientist – more than 30 years of experience as a professional fish biologist conducting work throughout the Columbia Basin, as well as in other anadromous waterways within the state of Washington, and in Oregon, Idaho, Montana, and Canada.

James Bernhard, Environmental Scientist - 10 years experience monitoring natural resources on the Hanford Site and collecting/accessioning samples for contaminant analyses; constructing data summaries, performing field inspections, and evaluating site-safety and mitigation plans.

Joni Cranna, Environmental Scientist - field sampling and data collection; Natural Resource Damage Assessment and other QA/QC procedures for sample collection and handling, data quality assurance review/verification, and custody documentation; and uploading information to data bases.

Matt Hoefer, Environmental Scientist - environmental surveillance and multi-media sampling, data summaries, client/regulator/stakeholder interfacing, technical report preparation. Fifteen years of experience in vector ecology and integrated pest management strategies.

David Shaw, Environmental Scientist - ecological resource reviews, mitigation planning, site walk-downs, revegetation monitoring and reporting, field sampling and data collection, and sample preparation for analysis.

Zeke Simmons, Environmental Scientist – fish and wildlife surveys and monitoring, field sampling and data collection, preparing samples for submission to analytical laboratories.

Rhett Zufelt, Environmental Scientist – geographical information system (GIS) mapping and analysis, data management, and ecological sampling for various EAS projects with CERCLA/RCRA standards; spatial analysis of environmental data using ESRI (ARCGIS, ArcView, ARC-INFO) and ERDAS Imagine software on UNIX and Windows platforms.

Miranda Filan, Environmental Analyst - environmental data compilation and analysis; literature review of historical environmental surveillance reports and database integration; development of database repositories supporting Natural Resource Damage Assessments and management; and wildlife sampling and monitoring.

Scott Johnson, Environmental Analyst - ecological monitoring compliance and environmental surveillance; development and implementation of biological collection activities; and data entry and management of contaminated biota in accordance with Natural Resource Damage Assessment procedures.

Rob Curet, Sr. Environmental Technician – U.S. Coast Guard licensed Merchant Marine boat operator; environmental surveying and sampling.

Neil Sullivan, Sr. Environmental Technician - Merchant Marines Operator of Uninspected Passenger Vessels (OUPV) License; environmental surveying and sampling.

Rylie Barron, Environmental Technician - field sampling and data collection, sample tracking, field logbook record keeping, instrument calibrations, and storing and shipping of samples for chemical analysis.

Shannan Johnson, Environmental Technician – field sampling and data collection, sample tracking, field logbook record keeping, quality assurance data reviews, hazardous chemical management, and storing and shipping of samples for chemical analysis.