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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 more than 40 years of experience focused on site remediation, deep foundation engineering, and construction management. His clients…

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 under complex regulatory conditions. Recently, he has focused…

Poppy Staub

Margaret "Poppy" Staub is a Senior Principal based in Colorado with more than 28 years of experience focused on regulatory compliance, water quality, permitting, integrated management systems and sustainable business…

Brandon Steets, P.E.

Brandon Steets, P.E., is a Senior Principal Engineer based in California with more than 20 years of experience 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…

Ken Susilo, P.E., D.WRE

Ken Susilo is a Senior Principal Water Resources Engineer based in California with more than 25 years of experience focused on integrated urban stormwater management.

Gordon Thrupp, Ph.D., P.G., CHG

Gordon Thrupp is a Principal Hydrogeologist based in California with more than 25 years of experience focused on evaluating geological and hydrogeological conditions. He has specialized in quantitative analysis of…

Eric Tollefsrud, P.G.

Eric Tollefsrud is a Principal Hydrogeologist based in Minnesota with more than 25 years of environmental consulting experience focused on the characterization and remediation of soil, soil vapor, and groundwater…

Keith Tolson, Ph.D.

Keith Tolson is a Senior Principal Environmental Scientist based in Florida with more than 15 years of experience focused on environmental sciences. He Specializes in the application of risk-based principles…

Denise Tripp

Denise Tripp is a Senior Consultant based in Massachusetts with more than 35 years of experience focused on environmental assessment and remediation and litigation support for clients in the paper,…

Jeffrey Tyburski, P.G.

Jeffrey Tyburski is a Principal Geologist based in North Carolina with more than 32 year of experience focused on environmental brownfields redevelopment solutions to support property due diligence and acquisition,…

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…

Joe Volpe, P.G.

Joe Volpe is a Principal Hydrogeologist based in Georgia with more than 30 years of diverse experience in all aspects of water management.

James Wang, Ph.D., P.E.

James (Yu-Sheng) Wang is a Principal Environmental Engineer based in Maryland with more than 23 years of experience focused on developing and applying innovative assessment and remediation technologies. James has…

Gary Wealthall, Ph.D.

Gary Wealthall is a Senior Principal Consultant based in United Kingdom with more than 25 years of experience focused on contaminant hydrogeology research and practice. He advises regulatory authorities and…

Nandra Weeks, P.E.

Nandra Weeks is a Senior Principal Environmental Engineer based in Florida with more than 30 years of professional experience focused on the engineering and remediation issues associated with environmentally-impaired property…

Susan Welt, M.P.H., P.E.

Susan Welt is a Principal Engineer based in Massachusetts with more than 20 years of experience focused on the investigation and remediation of industrial sites, former manufactured gas plants (MGP),…

Chuck Whisman, P.E.

Chuck Whisman is a Senior Principal Engineer based in Pennsylvania with more than 26 years of professional experience focused in the areas of soil and groundwater assessment/remediation, system optimization, compliance,…

Jimmy Whitmer, P.G., CHMM

Jimmy Whitmer is a Senior Principal Geologist and Hydrogeologist based in Georgia with more than 30 years of experience directing multidisciplinary projects focused on water supply development, site characterizations for…

Anju Wicke

Anju Wicke is a Senior Principal Scientist based in California with more than 25 years of experience in environmental consulting focused on program management, financial management, and contracting services for…

Jennifer Wilkie, Ph.D., P.E.

Jennifer Wilkie is a Principal Engineer based in Illinois with more than 20 years of experience in environmental research and consulting focused on providing multidisciplinary services and support to clients.

Kim Williams, P.E., CPSWQ

Kim Williams is a Senior Consultant Water Resources Engineer based in California with more than 25 years of experience focused on civil and environmental engineering.

Sam Williams, P.G., CHG

Sam Williams is a Senior Principal Hydrogeologist based in California with more than 35 years of experience focused on the characterization and remediation of soil and groundwater contamination at industrial…

Matthew Wissler, P.G.

Matthew Wissler is a Principal Hydrogeologist with more than 18 years of experience focused on the evaluation of water resources, hydrogeologic investigations relating to resource and waste permitting, groundwater modeling…
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