Below is a list of instructors and the course(s) they teach. Click on their names to read their bios and click on their logos to learn more about the organizations they work for. If you are interested in becoming a NASTT Good Practices instructor please contact Kari Webb, NASTT Education Manager.
![Edward Alan Ambler Photo of Edward Alan Ambler](https://nastt.org/wp-content/uploads/2023/09/Edward-Alan-Ambler-Jan22-180x240-c-top.jpeg)
Edward Alan Ambler, P.E.
Owner, AM Trenchless
![Marc A. Anctil Photo of Marc A. Anctil](https://nastt.org/wp-content/uploads/2023/09/Picture-Bio-Marc-Anctil-2019-180x240-c-top.jpg)
Marc A. Anctil
Head of Technical Sales at Logiball
![Dr. Sam Ariaratnam Photo of Dr. Sam Ariaratnam](https://nastt.org/wp-content/uploads/2023/09/Ariaratnam-Headshot-2022-180x240-c-top.jpg)
Samuel T. Ariaratnam, Ph.D., P.E., P.Eng., F.CSCE, F.ISTT, EASA, F.CAE, NAC, Dist.M.ASCE
Professor and Sunstate Chair of Construction Management & Engineering at Arizona State University
![Lisa-Arroyo-2022-180x240-c-top Photo of Lisa Arroyo, P.E.](https://nastt.org/wp-content/uploads/2023/09/Lisa-Arroyo-2022-180x240-c-top.jpeg)
Lisa Arroyo, P.E.
Project Manager, Carollo Engineers
![Alan Atalah Photo of Alan Atalah](https://nastt.org/wp-content/uploads/2023/09/Atalah202-180x240-c-top.jpg)
Alan Atalah
Professor of Construction Management at BGSU
![Brian Avon Photo of Brian Avon](https://nastt.org/wp-content/uploads/2023/09/Brian-Avon-scaled-180x240-c-top.jpg)
Brian Avon
Associate Vice President with Carollo Engineers
![Britt N. Babcock, P.E. Britt N. Babcock, P.E.](https://nastt.org/wp-content/uploads/2023/09/Babcock_Britt-180x240-c-top.jpg)
Britt N. Babcock, P.E.
President at Avanti International
![Kevin Bainbridge, A.Sc.T Photo of Kevin Bainbridge, A.Sc.T](https://nastt.org/wp-content/uploads/2023/09/Bainbridge-180x240-c-top.jpg)
Kevin Bainbridge, A.Sc.T
Infrastructure Management Practice Leader for Robinson Consultants Inc.
![Dr. David Bennett Photo of Dr. David Bennett](https://nastt.org/wp-content/uploads/2023/09/Dave-Bennett-2022-180x240-c-top.jpg)
Dr. David Bennett
Owner and President of Bennett Trenchless Engineers
![George Bontus Photo of Dr. David Bennett](https://nastt.org/wp-content/uploads/2023/12/GJBontus-Headshot-August-2023_crop-90x120-c-top.jpg)
George Bontus, P.Eng.
Director of Engineering with Insituform Technologies Limited
![Dr. Glenn Boyce Photo of Dr. Glenn Boyce](https://nastt.org/wp-content/uploads/2023/09/Boyce-180x240-c-top.jpg)
Dr. Glenn Boyce
Principal with Delve Underground
![Craig Camp Photo of Craig Camp](https://nastt.org/wp-content/uploads/2023/09/Camp20smaller-180x240-c-top.jpg)
Craig Camp
Tunneling & Trenchless Manager with GHD
![Aaron Cohen, CPC Photo of Aaron Cohen, CPC](https://nastt.org/wp-content/uploads/2023/09/Cohen-180x240-c-top.jpg)
Aaron Cohen, CPC
Estimate Product Manager at InEight
![Don Del Nero Photo of Don Del Nero](https://nastt.org/wp-content/uploads/2023/09/Don-Del-Nero-Headshot-2020-180x240-c-top.jpg)
Don Del Nero
V.P., Senior Tunnel Engineering Director – WSP
![Dennis J. Doherty, P.E., F.ASCE Photo of Dennis J. Doherty, P.E., F.ASCE](https://nastt.org/wp-content/uploads/2023/09/Doherty-Photo-180x240-c-top.jpg)
Dennis J. Doherty, P.E., F.ASCE
Senior Principal Professional, Kleinfelder
![Dr. Glenn Duyvestyn Photo of Dr. Glenn Duyvestyn](https://nastt.org/wp-content/uploads/2023/09/Duyvestyn-180x240-c-top.jpg)
Dr. Glenn Duyvestyn
Senior Trenchless Specialist with Mott MacDonald
![Jennifer Glynn, P.E. Photo of Jennifer Glynn, P.E.](https://nastt.org/wp-content/uploads/2023/09/Glynn_1-180x240-c-top.jpg)
Jennifer Glynn, P.E.
Senior Technical Practice Lead and Principal for Woodard & Curran
![Normal Joyal Photo of Normal Joyal](https://nastt.org/wp-content/uploads/2023/09/Joyal-180x240-c-top.jpg)
Norman Joyal
Senior Associate with Delve Underground
![Bradley S. King Photo of Bradley S. King](https://nastt.org/wp-content/uploads/2023/09/Brad-King-Headshot-purple-shirt-sportcoat-180x240-c-top.jpeg)
Bradley S. King
Manager of Construction Services with Underground Solutions, Inc.
![Dr. Jason Lueke Photo of Dr. Jason Lueke](https://nastt.org/wp-content/uploads/2023/09/Lueke201-180x240-c-top.jpg)
Dr. Jason Lueke
National Practice Leader for Trenchless Services with Associated Engineering
![Chris Macey Photo of Chris Macey](https://nastt.org/wp-content/uploads/2023/09/Chris-Bio-Pic-Option-cropped-180x240-c-top.jpg)
Chris Macey
North American Technical Practice Leader for Condition Assessment and Rehabilitation of Pipelines at AECOM
![Jeff Maier, P.E. Photo of Jeff Maier, P.E.](https://nastt.org/wp-content/uploads/2023/09/5-2019-NASTT-Headshot_Jeff-Maier-for-web-180x240-c-top.jpg)
Jeff Maier, P.E.
Water Technology Team Infrastructure Practice Leader at Garver
![George Mallakis Photo of George Mallakis](https://nastt.org/wp-content/uploads/2023/09/George-1-180x240-c-top.jpg)
George Mallakis
Regional Manager for TT Technologies, Inc.
![Ron Manestar Photo of Ron Manestar](https://nastt.org/wp-content/uploads/2023/09/Ron-Manestar-Headshot-180x240-c-top.jpg)
Ron Manestar
Senior Field Specialist for Aries Industries
![Dr. John Matthews Photo of Dr. John Matthews](https://nastt.org/wp-content/uploads/2023/09/11-2019-NASTT-Headshot_John-Matthews-for-web-180x240-c-top.jpg)
Dr. John Matthews
Director of the Trenchless Technology Center and Associate Professor at Louisiana Tech University
![Patrick Moskwa, P.Eng Photo of Patrick Moskwa, P.Eng](https://nastt.org/wp-content/uploads/2023/09/Patrick-Moskwa-headshot-180x240-c-top.jpg)
Patrick Moskwa, P.Eng
Project Engineer at Robinson Consultants, Inc
![Mary Neher, P.E. Photo of Mary Neher, P.E.](https://nastt.org/wp-content/uploads/2023/09/Mary-Neher-Headshot-2021-180x240-c-top.jpg)
Mary Neher, P.E.
Senior Project Engineer with Bennett Trenchless Engineers
![Collins Orton Photo of Collins Orton](https://nastt.org/wp-content/uploads/2023/09/Orton-180x240-c-top.jpg)
Collins Orton
Trenchless Consultant at Trenchless Solutions
![Derek Potvin Photo of Derek Potvin](https://nastt.org/wp-content/uploads/2023/09/Potvin_1-180x240-c-top.jpg)
Derek Potvin
President of Robinson Consultants Inc.
![Cindy Preuss, P.E. Photo of Cindy Preuss, P.E.](https://nastt.org/wp-content/uploads/2023/09/Preuss_Cindy-2023-180x240-c-top.jpg)
Cindy Preuss, P.E.
Associate, Water Conveyance Discipline Leader of CDM Smith
![George Ragula Photo of George Ragula](https://nastt.org/wp-content/uploads/2023/09/Ragula_1-180x240-c-top.jpg)
George Ragula
Founder and CEO at RagulaTech
![Kaleel Rahaim Photo of Kaleel Rahaim](https://nastt.org/wp-content/uploads/2023/09/Rahaim-180x240-c-top.jpg)
Kaleel Rahaim
Consultant
![David B. Rosenberg Photo of David B. Rosenberg](https://nastt.org/wp-content/uploads/2023/09/Rosenberg-180x240-c-top.jpg)
David B. Rosenberg
Senior Manager, Corporate Business Development at Michels Corporation
![Piero Salvo Photo of Piero Salvo](https://nastt.org/wp-content/uploads/2023/09/Salvo2-180x240-c-top.jpg)
Piero Salvo
President of GAME Trenchless Consultants
![Jason Schiro Photo of Jason Schiro](https://nastt.org/wp-content/uploads/2023/09/Schiro-180x240-c-top.jpg)
Jason Schiro
Product Manager-CIPP for Interplastic Corporation
![Benny Siljenberg, P.E. Photo of Benny Siljenberg, P.E.](https://nastt.org/wp-content/uploads/2023/09/Benny-crop-180x240-c-top.jpg)
Benny Siljenberg, P.E.
Founder and Vice President of Lithos Engineering
![Dr. Kim Staheli Photo of Dr. Kim Staheli](https://nastt.org/wp-content/uploads/2023/09/Kim-Staheli-180x240-c-top.jpg)
Dr. Kim Staheli
President and Founder of Staheli Trenchless Consultants
![Dr. Ray Sterling Photo of Dr. Ray Sterling](https://nastt.org/wp-content/uploads/2023/09/Sterling-180x240-c-top.jpg)
Dr. Ray Sterling
Professor Emeritus at Louisiana Tech University
![Matt Timberlake Photo of Matt Timberlake](https://nastt.org/wp-content/uploads/2023/09/Timberlake_Matt-180x240-c-top.jpg)
Matt Timberlake
Executive Vice President of Corporate Development and Safety at Vortex Companies
![Charles Tripp Charles Tripp](https://nastt.org/wp-content/uploads/2023/12/Charles-Tripp-2023-90x120-c-top.jpg)
Charlie Tripp, P.E.
Technical Manager – Pipeline Rehabilitation Design and Condition Assessment at AECOM
![Kate Wallin Photo of Kate Wallin](https://nastt.org/wp-content/uploads/2023/09/Kate-Wallin-180x240-c-top.jpg)
Kate Wallin
Senior Scientist at Bennett Trenchless Engineers
![Matthew Wallin, P.E. Photo of Matthew Wallin, P.E.](https://nastt.org/wp-content/uploads/2023/09/Matt-Wallin-Jan22-180x240-c-top.jpg)
Matthew Wallin, P.E.
Senior Project Manager for Bennett Trenchless Engineers
![Dennis Walsh, P.E. Photo of Dennis Walsh, P.E.](https://nastt.org/wp-content/uploads/2023/09/Dennis20Walsh-180x240-c-top.jpg)
Dennis Walsh, P.E.
Senior Project Manager, Horizontal Directional Drilling, PSE&G
![Michael E. Woodcock Photo of Michael E. Woodcock](https://nastt.org/wp-content/uploads/2023/09/Woodcock-180x240-c-top.jpg)
Michael E. Woodcock
Vice President at Portland Utilities Construction Company, LLC
![Diana Worthen, P.E. Photo of Diana Worthen, P.E.](https://nastt.org/wp-content/uploads/2023/09/Diana-Worthen-scaled-180x240-c-top.jpg)
Diana Worthen, P.E.
Owner and Principal Engineer of Cascade Trenchless Consulting