Contributors and Bios

Guardair Corporation

Thomas C. Tremblay, contributing author


With a rich history dating back to 1942, Guardair Corporation is a world-class manufacturer of industrial/commercial pneumatic tools and accessories, including the AirSpade. In 1994, Tom led a group that acquired the company and has guided and grown the business since that time. Before Guardair, Tom was a Vice President at New England Capital, the venture capital arm of the Bank of New England. Prior, he held the position of Senior Consultant at Technology Consulting Group in Boston. Tom holds a BS in Electrical Engineering from Lafayette College, as well as a dual Masters in Business Administration and Manufacturing Engineering from Boston University.

Craig M. Schoen, contributing author

National Sales Manager, AirSpade Division

Craig’s goal is to provide end-users with the safest and most effective air excavation tools on the market. He enjoys educating new customers on the benefits of AirSpade and working in the field with end-users. Prior to AirSpade, Craig held the position of Northeast Sales Manager for Makita Power Tools where he worked extensively within the utility market. Craig received his BA in Corporate Communications and Public Relations from Bridgewater State University.


Ngoc Doan, project manager

Marketing Coordinator

Ngoc is a designer at STIMSON in the Cambridge, MA studio. Ngoc has worked on multiple awarding winning institutional and public projects such as Pulaski Park and award winning UMASS Design Building. Ngoc holds a Master of Landscape Architecture from the University of Massachusetts Amherst and a Bachelor of Arts from Boston College. As a student, Ngoc received multiple awards and recognition: University Olmsted Scholar, BSLA Honor Award, ASLA Merit Award, James Rose Suburbia Transformed 2.0 Exhibition, BSLA Scholarship, and UMass MLA Scholarships. After completing her Masters degree, Ngoc pursued photography while working as a landscape designer and became fascinated with documenting built landscapes. She works as a marketing coordinator, landscape designer and office photographer.

Stephen Stimson, FASLA, reviewer


Born and raised on a dairy farm, Stephen’s agrarian heritage has inspired and shaped the landscapes he has created across New England and the country. He received his education from the University of Massachusetts and the Harvard Graduate School of Design and has been practicing landscape architecture for over twenty years, founding the firm in 1992. His work has been widely recognized with numerous awards from the Boston Society of Landscape Architects and the American Society of Landscape Architects. He has taught at the Harvard Graduate School of Design and lectured and served on design juries at the University of Massachusetts, Rhode Island School of Design, and Roger Williams University. Stephen was elected as a Fellow of the American Society of Landscape Architects in 2004 for his outstanding achievements in the field of landscape architecture. For the past five years, he has been cultivating Charbrook Nursery for project use and field research related to native plant propagation, collected species, planted forms, and soil specifications.