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Environmental Science Associates

819 SE Morrison St Ste 310 Portland OR 97214 Work Phone: (541) 241-2818 Website: https://www.esassoc.com


Environmental Science Associates (ESA) is a comprehensive environmental consulting firm, celebrating over 50 years of service. Operating from 21 offices across California, the Pacific Northwest, and the Southeastern United States, ESA is 100% employee-owned. Their services encompass planning, designing, permitting, mitigating, and restoring projects across various communities, infrastructure systems, open spaces, and wildlands. ESA specializes in environmental planning, analysis and assessment, natural and cultural resources management, environmental restoration and design, and regulatory compliance.

Their expertise lies in serving a diverse range of clients, including government agencies, nonprofit organizations, and private industries. ESA stands out for its ability to offer a full spectrum of services while maintaining close, partnership-based relationships with its clients. The firm is renowned for its expert technical capabilities, rigorous scientific analysis, and high-quality technical documents.

ESA’s multidisciplinary approach integrates science, planning, engineering, and design, fostering an environment where cross-functional teams collaborate effectively. This synergy results in comprehensive, enduring solutions for clients.

Core Services:

  • Air Quality, including greenhouse gas mitigation
  • Biological Resources management
  • Climate Change & Resilience, focusing on adaptation and sustainability
  • Cultural & Historic Resources, including archaeology and historic preservation
  • Environmental Permitting & Compliance
  • Environmental Review & Documentation, including CEQA and NEPA compliance
  • Flood & Stormwater Management
  • Landscape Architecture
  • Natural Resource Management
  • Water Resources, including water quality and wastewater management