Sean Ragain, R.G.

Sean Ragain is a Senior Principal Geologist based in Oregon with more than 25 years of experience focused on providing hydrogeologic and environmental consulting services to both private industry clients…

Thomas Ramsey, P.E.

Tom Ramsey is a Senior Principal Civil Engineer based in Maryland with more than 30 years of experience focused on engineering design, construction management, and economic analyses associated with containment…

Michael Reardon, P.E.

Mike Reardon is a Principal Environmental Engineer based in California with more than 20 years of experience focused on due diligence, site assessments, and soil, soil vapor, and groundwater remediation…

Syed Rehan, P.E., BCEE

Syed Rehan is a Senior Principal Environmental Engineer based in California with more than 22 years of experience focused on developing engineering solutions and regulatory compliance strategies for environmentally impaired…

Cory Reiter, P.E.

Cory Reiter is a Senior Principal Engineer based in Indiana with more than 20 years of experience focused on managing federal civil and environmental projects in the areas of flood…

David Reynolds, Ph.D., P.Eng.

David Reynolds is a Senior Principal Engineer and Australian Operations Manager based in Sydney. He specializes in the development and implementation of groundwater remediation technologies and management strategies for complex…

Kaitlyn Rhonehouse, P.E.

Kaitlyn Rhonehouse is a Principal Engineer based in North Carolina with more than 14 years of experience focused on the assessment and remediation of contaminated properties, property transaction environmental due…

David Richardson, P.E, P.G.

David Richardson is a Senior Engineer based in Minnesota with more than 30 years of experience managing and executing environmental assessment and engineering projects for private and public sector clients…

Ian Richardson, P.Eng., P.E.

Ian Richardson is a Senior Principal based in Ontario with more than 30 years of experience developing remedial strategies and negotiating and implementing remedial action at complex sites in the…

David Riotte, P.E.

David Riotte is a Principal Environmental Engineer based in Florida with more than 15 years of experience focused on site assessment and remediation, Brownfields redevelopment, construction management, and the closure…

Glenn Rix, Ph.D., P.E.

Glenn Rix is a Senior Principal Geotechnical Engineer based in Georgia with more than 30 years of experience focused on the areas of geotechnical earthquake engineering and engineering seismology. His…

Christopher Robb, P.E.

Chris Robb is a Senior Principal Engineer based in Wisconsin with more than 20 years of experience in environmental consulting, remediation design and construction, quality control, and project management of…

Brent Robinson, P.E.

Brent Robinson is a Senior Principal Engineer based in Utah with more than 25 years of domestic and international civil engineering and environmental, health, and safety (EH&S) consulting experience. His…

Andrea Rocha, Ph.D.

Andrea Rocha is a Scientist based in Tennessee with more than 10 years of experience focused on research using geochemical, microbial, computational, and genomics techniques within the areas of environmental…

Marc Rogoff, Ph.D.

Marc Rogoff is a Senior Consultant based in Florida with more than 38 years of professional experience focused on solid waste management as a public agency manager and consultant.

Jamey Rosen, P.Geo.

Jamey Rosen is a Senior Principal Geoscientist based in Ontario with more than 20 years of experience focused on Geospatial Information Management System design and development. Jamey has built systems…

Gregory Roush, P.G.

Gregory Roush is a Senior Principal Geologist based in Georgia with more than 30 years of experience focused on directing multidisciplinary projects involving site assessments and corrective actions at industrial…

Scott Rowlands, P.G., CEG, CHG

J. Scott Rowlands is a Principal Hydrogeologist based in California with more than 25 years of experience focused on environmental and geotechnical consulting.

Paul Sabatini, Ph.D., P.E., D.GE

Paul Sabatini is a Senior Principal Engineer based in Illinois with more than 22 years of experience focused on the analysis, design, and inspection of anchored walls, landslide stabilization systems,…

Eric Sager, P.G.

Eric Sager is a Principal Geologist based in Florida with over 20 years of experience working collaboratively to build project teams that solve complex problems and meet client expectations.

Rodolfo Sancio, Ph.D., P.E., D.GE

Rodolfo Sancio is a Senior Principal Geotechnical Engineer based in Houston, Texas with more than 20 years of experience focused on geohazard management (i.e., identification, characterization, and mitigation of geohazards),…

Thierry Sanglerat, P.E.

Thierry Sanglerat is a Senior Principal Civil Engineer based in California with more than 30 years of consulting experience focused on groundwater and soil remediation, brownfield site redevelopment, waste management,…

Christopher Saranko, Ph.D., DABT

Christopher Saranko is a Principal Senior Board-Certified Toxicologist based in Georgia with more than 15 years of experience focused on evaluating potential risks associated with exposures to chemicals in the…

Daniel Schauer, P.G.

Daniel Schauer is a Senior Principal Geologist based in Florida with more than 35 years of geological, hydrogeological, and geotechnical engineering consulting experience focused on multidisciplinary engineering contracts for federal,…

John Seymour, P.E.

John Seymour is a Senior Principal Civil Engineer based in Illinois with over 40 years of experience focused on site remediation, deep foundation engineering, and construction management. His clients include…

Scott Sheridan, P.E.

Scott Sheridan is a Senior Principal Civil and Geotechnical Engineer based in Virginia with more than 15 years of experience focused on providing professional engineering, construction management, and consulting services…

Saverio Siciliano, P.G., C.E.G.

Saverio Siciliano is a Principal Consultant based in California with more than 20 years of experience in geo-engineering focused on solving municipal and private client's problems dealing with site subsurface…

Andrea Siefers, P.E.

Andrea Siefers is a Project Engineer based in North Carolina with more than 10 years of consulting and regulatory experience focused in air quality, including permitting, compliance, and greenhouse gas…

Eric Smalstig, P.E.

Eric Smalstig is a Senior Principal Engineer based in California with more than 25 years of environmental consulting experience focusing on industrial facilities (production and waste management) assessment and remediation,…

Brian Smith

Brian Smith is a Senior Environmental Consultant based in Utah with more than 18 years of professional experience focused in site investigation and remediation, due diligence, environmental compliance and permitting.

Kenneth J.K. Smith, P.G.

Ken Smith is a Senior Principal Hydrogeologist based in Pennsylvania with more than 33 years of experience managing client liabilities and remediation in multiple states and under varying regulatory conditions.…

Poppy Staub

Margaret "Poppy" Staub is a Senior Principal Consultant based in Colorado with more than 20 years of experience focused on environmental compliance, Superfund site management, pollution prevention practices, and management…

Brandon Steets, P.E.

Brandon Steets is a Senior Principal Engineer based in California with more than 19 years of experience specializing in National Pollutant Discharge Elimination System (NPDES) and Total Maximum Daily Load…

Eric Suchomel, Ph.D., P.E.

Eric Suchomel is a Principal Environmental Engineer based in California with more than 15 years of academic and professional experience focused on remedial program management, site investigation and characterization, feasibility…

James Stout, BCES

Jim Stout is a Senior Principal Environmental Scientist based in Texas with more than 31 years of experience focused on the effective management of environmental remediation projects for private and…

Scott Struck, Ph.D.

Scott Struck is a Principal based in Colorado with more than 15 years of experience focused on planning, design, and implementation of stormwater infrastructure and watershed management to meet drainage…
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