EA is a 100% Employee Stock Ownership Plan (ESOP)-owned public benefit corporation that provides environmental, compliance, natural resources, and infrastructure engineering and management solutions to a wide range of public and private sector clients. Headquartered in Hunt Valley, Maryland, EA employs more than 700 professionals through a network of over 25 commercial offices across the continental United States, as well as Alaska, Hawaii, and Guam. In business for more than 50 years, EA has earned an outstanding reputation for technical expertise, responsive service, and judicious use of client resources.
ECS was founded in 1988 with the goal to raise the standards of professional engineering consulting. Today, we are a leader in geotechnical, construction materials, environmental and facilities consulting services. We are employee-owned with more than 3,000 employees in 100+ offices and testing facilities coast to coast. ECS is currently ranked #60 in Engineering News-Record’s Top 500 Design Firms (April 2026), #148 in Engineering News-Record’s Top 200 Environmental Firms (October 2025) and #38 in Zweig Group’s Hot Firm List (June 2026).
ENDEVR Solutions is an environmental technology company founded in Washington State in September 2025 by an environmental engineer with over 18 years of experience in site investigation, remediation, and consulting.
ENDEVR began with a simple observation. Once lab data arrives, environmental professionals spend days, sometimes weeks, organizing and formatting data tables, screening results, building geospatial visualizations, and revising figures before the actual analysis can begin.
The tools built by ENDEVR Solutions complete these workflows in minutes. Environmental professionals get their hours back to take care of their clients and make the judgment calls that need an expert.
Environmental Works get the job done right from residential inspections and mitigations to commercial ESAs and remediations. Our integrated environmental consulting & construction services enable you to streamline projects and eliminate the complexities of dealing with multiple contractors to reach a single objective. We serve the residential, commercial and environmental sectors with the same conviction and care. No job is too big or too small, so give us a call.
ERSM is an environmental company dedicated to “PROTECTING WATER | RESTORING NATURE” We provide comprehensive services in stormwater management, ecological restoration, erosion control, invasive and noxious weed management, and environmental permitting. Serving all of Washington and Oregon, we are committed to protecting and restoring our natural resources.