Established in 1927 as Toledo Testing Laboratory, TTL Associates, Inc. has grown to be a full-service environmental, geotechnical engineering, industrial hygiene, materials testing and drilling firm. We focus primarily on the following markets: Commercial, Development / Redevelopment, Education, Energy, Healthcare, Federal Government, Local and State Government, Industrial, Retail and Transportation.

TTL Associates was established under the leadership of Thomas R. Uhler, P.E. as a Service Disabled Veteran Owned Small Business (SDVOSB). We also are an Ohio Edge firm. Robert S. Ruse,Ph.D., P.E. serves as our president and leads a team of 110 associates.

TTL’s executive management committee includes Mr. Uhler and Mr. Ruse along with Vice Presidents Curtis Roupe, P.E., Jeff Elliott, P.E., ┬áTimothy Pedro, Environmental Manager Martha Thompson, P.E. and Controller Melissa Stasko.