In 1993, Applied Science and Technology Inc., abbreviated shortly after to AST Environmental, Inc., was founded by Bob Welsh. Since then, like-minded civil and environmental professionals have come together with a common vision: safely provide industry leading solutions and expertise to the environmental consulting community. Our project management team, with a combined 100+ years of experience, looks forward to helping you solve your site-specific project challenges.

AST has always taken pride in providing our clients technically strong solutions to their problems and being more than just a contractor. AST loves a challenge and invites our clients to bring us their toughest problems. As we like to say at AST, “We’re a group of engineers, geologists, and scientists that likes to get dirty”. Contact us today to see how we can help you solve your civil and environmental challenges.

Meet the Team

Gary Simpson

Chief Operations Officer and Senior Project Manager

Mike Mazzarese

Senior Engineer

Nathan Thacker

Senior Geologist

Bill Brab

Remediation Geologist

Derek Pizarro

Senior Product Manager

Zach Zawila

Senior Project Manager and Corporate Health & Safety Officer

Betty Tasek

National Account Manager

William Shackelford

Financial Specialist

Ben Borth

Project Manager

Chase Noakes

Project Geologist

Earnest Hannah

Environmental Scientist

Evan Hart

Project Geologist

Nathan Mau

Project Engineer

Brooklynn Williams

Field Geologist

Claire Mackey

Field Engineer

Cody Mason

Field Geologist

Colin Hogg

Field Geologist

Neill Ruff

Site Lead

Nick Bynum

Field Geologist

Troy Baesler

Site Manager

Katie Marletta

Project Coordinator