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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

Ed Creaden

Senior Project Manager

Austin Moore

Site Manager

Tony Hawley

Engineering Technician

Colin Hogg

Field Geologist

William Shackelford

Financial Specialist

Ben Borth

Project Manager

Earnest Hannah

Environmental Scientist

Nathan Mau

Project Engineer

Troy Baesler

Site Manager

Katie Marletta

Project Coordinator

Derrick Miller

Field Geologist

Ray Hukill

Field Engineer

Mitch Dean - Account Manager

Mitch Dean

Account Manager

Boyd Gray

Field Geologist

Collin Murphy

Field Geologist

Laura Brown

Project Scientist

Brendan Hardin

Field Geologist

Trey Canady

Field Geologist

Cooper Pflug

Project Scientist

Dillon Brooks

Field Scientist

Brandon Gray

Field Specialist

Lucas Simpson

Business Development and Project Specialist