McArdle Gannon Associates, Inc. is a full service geotechnical and hydrogeological engineering consulting firm providing services from design to construction. 

We provide practical, timely, and cost effective solutions for the geotechnical aspects of our client's projects. 

The founders of the firm, Wayne McArdle, P.E. and John Gannon, have a combined forty plus years of progressive and responsible geotechnical and hydrogeologic engineering experience. 

MGA has performed geotechnical and hydrogeological services on commercial, industrial, municipal, and residential projects throughout New England. We have a dedicated staff that provides quality service to our clients. We pride ourselves on being responsive to our client’s needs and schedules.

Our Team

Wayne A. McArdle, P.E.


John J. Gannon


Sherry Holmes, P.E.

Geotechnical Engineer

Robert E. Drown, P.E.

Field Engineer

Employment Opportunities

We are always interested in speaking to qualified candidates.

Contact Us