Thomas Vainio-Mattila, PGeo., EurGeol.

Thomas Vainio-Mattila is a Principal Environmental Consultant based in Ireland and with more than 25 years of experience focused on environmental consulting in Ireland, the UK and Germany.

Colette Van Straaten, EI

Colette Van Straaten is a Project Engineer and Sustainability Specialist based in Colorado focused on environmental engineering, sustainability initiatives, Environment, Social, Governance (ESG) strategy and reporting, and life-cycle water projects.

Lisa Van Tassell, P.E.

Lisa Van Tassell is a Senior Principal Environmental Engineer based in California with more than 15 years of experience focused on soil and groundwater remediation systems; site investigation and characterization,…

Jesse Varsho, P.E., P.G.

Jesse Varsho is a Principal Engineer and Geologist based in Illinois with more than 19 years of experience in environmental consulting, landfill engineering, construction quality assurance, permitting, compliance, and project…

Robert Veenstra

Robert Veenstra is a Principal Environmental Consultant based in Missouri with more than 30 years of experience focused on developing and managing complex soil, groundwater, surface water and sediment investigation…

Berend Velderman, P. Geo

Berend Jan Velderman is a Senior Consultant based in Ontario with more than 30 years of experience in a variety of environmental projects including assessment and remediation of contaminated sites,…