team
Our Team
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2023/01/john_headshot.jpg?time=1721046182)
John Kollmeier
Chief Executive Officer, CHMM
SECOND ONLY TO “DAD,” THE MOST SATISFYING THING THAT I’VE EVER BEEN CALLED IS “COACH.”
jkollmeier@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/04/debbie_headshot.jpg?time=1721046182)
Debbie Kollmeier
Chief Financial Officer, MS
I’M INSPIRED BY PEOPLE WHO ARE HELPING TO MAKE THE WORLD A BETTER PLACE.
dkollmeier@bstiweb.com
![tripp fischer brownfield science and technology](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2023/07/tripp-fischer-bsti-1024x996.jpg)
Tripp Fischer
Chief Science Officer, P.G.
MY FAVORITE WORD IS BALANCE.
IT’S EQUALLY EMOTIONAL AS IT IS SCIENTIFIC.
tfischer@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/04/tony_headshot.jpg?time=1721046182)
Chief Operating Officer, Director of Business Development
SUCCESS TO ME IS WATCHING OTHERS SUCCEED AS THE DIRECT RESULT OF MY ACTIONS.
tfinding@bstiweb.com
![Dan Claycomb](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2023/07/Dan-7.23.jpg?time=1721046182)
Daniel Claycomb
Principal Geologist, P.G.
Don’t confuse effort with results.
dclaycomb@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2023/07/Frame-16.png?time=1721046182)
Jill Williams-Hall
Director of Special Projects, MPA
YOU DO WHAT YOU ARE.
jhall@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/04/shaun_headshot.jpg?time=1721046182)
Shaun Quinlan
Senior Project Manager
I REMAIN IN AWE OF THE NATURAL WORLD.
squinlan@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/04/nicholas_headshot.jpg?time=1721046182)
Nicholas Santella
Principal Geochemist, Ph.D., P.G.
NOTHING SHOULD BE WASTED.
nsantella@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/09/rachel_headshot.jpg?time=1721046182)
Rachel DeRosa
Environmental Chemist
IF IT DOESN’T CHALLENGE YOU, IT DOESN’T CHANGE YOU.
rderosa@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/04/gregg_headshot.jpg?time=1721046182)
Greg Webb
Senior Project Manager
IF YOUR UNIFORM IS CLEAN, YOU’RE NOT WORKING HARD ENOUGH.
gwebb@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/04/frank_headshot.jpg?time=1721046182)
Frank McCue
Environmental Field Services
“ONCE YOU’VE WRESTLED, EVERYTHING ELSE IN LIFE IS EASY.” – DAN GABLE
FMcCue@bstiweb.com
![garrett-mansfield-headshot garrett-mansfield-headshot](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2023/02/garrett-mansfield-headshot.jpg?time=1721046182)
Garrett Mansfield
Geologist
“ABILITY IS IMPORTANT IN OUR QUEST FOR SUCCESS, BUT DEPENDABILITY IS CRITICAL.” – ZIG ZIGLAR
gmansfield@bstiweb.com
![erik rodriguez headshot](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2024/04/erik-rodriguez-headshot.jpg?time=1721046182)
Erik Rodriguez
Environmental Engineer
“YOU CAN EITHER SUFFER THE PAIN OF DISCIPLINE OR THE PAIN OF REGRET” – JIM ROHN
erodriguez@bstiweb.com
![dan brown employee headshot](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2024/05/dan-brown-headshot-768x1024.jpeg)
Dan Brown
Field II Environmental Scientist
NOTHING IN THE WORLD CAN TAKE THE PLACE OF PERSISTENCE
dbrown@bstiweb.com
![max memeger bsti field geologist](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2023/07/max-memeger-961x1024.jpg)
Max Memeger
Field Geologist
PUSH YOURSELF FURTHER THAN WHAT YOU’RE CAPABLE OF.
mmemeger@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2022/04/nate_headshot.jpg?time=1721046182)
Nate Oropollo
Biologist, Field Scientist
THE DAY I AM SATISFIED IN LIFE
IS THE DAY I STOP LIVING.
noropollo@bstiweb.com
![](https://43rfc6.n3cdn1.secureserver.net/wp-content/uploads/2023/02/patty-haug-headshot.jpg?time=1721046182)
Patricia Haug
Geologist
“GIVE TO THE WORLD THE BEST YOU HAVE, AND THE BEST WILL COME BACK TO YOU.” – MADELINE BRIDGES