Parametrix Adds Two Environmental Professionals in Seattle


Seattle, WA – Stacy Patterson and Molly Alar have joined Parametrix, bringing a combined over 40 years of experience to the firm’s environmental planning and compliance practice.

Stacy Patterson headshot

Stacy Patterson joins Parametrix as a Senior Consultant and Environmental Infrastructure Group Lead. She has over 30 years of experience in environmental management, including serving as principal environmental scientist, project manager, and project coordinator. Patterson comes to Parametrix from Langan Engineering and Environmental Services where she was a Senior Project Manager. Her experience encompasses environmental compliance including wastewater and stormwater compliance and management; hazardous and solids waste management, handling, and reporting; contaminant source control; and allocation work for Superfund sediment sites.

Molly Alar headshot

Molly Alar joins Parametrix as a Senior Scientist with over 11 years of diverse experience in project management and compliance consulting. Alar comes to Parametrix from Langan Engineering as a Project Scientist. Her experiences include regulatory support for industrial stormwater and wastewater permitting and compliance; Spill Prevention, Control, and Countermeasure (SPCC) Plan preparation and management; air operating permit compliance; waste designation and management; along with additional experience in aquatic toxicology.

At Parametrix, Patterson and Alar join the firm’s Greater Washington environmental planning and compliance team, which includes over 60 professionals providing cultural and historic resources, natural resources, environmental documentation, fish passage and river restoration, stormwater management and design, industrial stormwater/wastewater treatment, hydrogeology, and solid waste services to public and private clients throughout the Northwest.

About Parametrix

Parametrix is a 100-percent employee-owned consulting firm helping clients deliver resilient infrastructure, livable communities, and environmentally sustainable solutions. From offices across the Western United States, our team of engineers, planners, scientists, landscape architects, surveyors, project managers, and construction managers are helping our clients imagine what’s possible and create tomorrow, together. Learn more at

Scroll to Top