Shan-Tai Yeh, PE
President and Founder
Shan-Tai Yeh is the President and Founder of Yeh and Associates. He has 38 years of geotechnical engineering experience, including 13 years with the Colorado Department of Transportation where he supervised the Soils, Foundation, and Engineering Geology units and also was the Chief Engineering Geologist. Located in our Denver, CO office, Shan-Tai serves as the Principal-in-Charge for geotechnical investigations, design, and inspection projects.
Richard D. Andrew, PG
Our Vice President, Rick Andrew, has 32 years of experience in the geotechnical engineering and engineering geology field. He is noted for his ability to identify and provide the necessary expertise to challenging and complex projects. Rick was employed by the Colorado Department of Transportation for 10 years as a Senior Engineering Geologist. His background in geotechnical related construction and rock excavation provides our team with a unique perspective on geological and geotechnical engineering. He has managed numerous geological investigations and design teams primarily in challenging terrain and fragile environments.
Jonathan Blanchard, PE, GE
Jon Blanchard has 30 years of professional experience in project and contract management, corporate planning and operation, office management, business development, construction management, and expertise in geotechnical engineering. He has extensive project experience with water, wastewater, flood control, and transportation infrastructure projects. He has provided geotechnical and construction services for more than 50 bridges, nearly all wastewater treatment facilities on Central Coast, flood control dams and levees, and various other projects throughout California. He has established a trusted working relationship with oversight agencies such as Caltrans, OSHPD, DSA, DSOD, and CGS and with other local CSD, County, and City government agencies. Jon is the Pacific Region manager for Yeh and Associates’ engineering and construction projects in California and Nevada.
Edward Archuleta, PE
Principal and Western Regional Manager
After 18 years of service with the Colorado Department of Transportation, Ed Archuleta recently joined Yeh and Associates as a Principal in our Durango office. Ed brings his CDOT expertise as a Senior Project Engineer with responsibilities for managing a staff up to 50. At Yeh and Associates, he serves as the regional manager for design and construction projects in Western Colorado, New Mexico, Arizona, and Utah.
Bill Scheuerman, PE
Principal and Manager of Construction Services
Bill Scheuerman has been the Manager of Construction Services for Yeh and Associates for the past four years. Previously, he was employed for 28 years with the Colorado Department of Transportation – 16 years of which were spent as Resident Engineer. In that role, he was responsible for projects from planning through construction. He oversaw the construction of a wide variety of project types from complex urban projects to more rural eastern plains projects. He currently manages the Yeh and Associates’ FHWA construction management contract and works proactively with clients to manage staff resources.
Matthew J. DeMarco
Matt DeMarco manages the Engineering Services group for Yeh and Associates and has 36 years of experience in successfully developing geotechnical teams. He is known for cost-efficient, high-quality work and timely project delivery. He is an excellent communicator with proven problem-solving skills and has delivered innovative solutions to diverse client and stakeholder groups. He is equally effective at identifying teaming opportunities to advance the state-of-the-practice, and then turn those opportunities into long-lasting partnerships with our Clients. He is also highly adept at providing senior peer review services for multiple design projects.
Ming Lim, PE
Senior Project Manager and Manager of the Colorado Springs Office
Ming Lim brings 18 years of civil and geotechnical engineering experience to Yeh and Associates as a senior project manager, in addition to serving as the manager of our Colorado Springs office. He has provided engineering services for multiple owners, consultants, contractors, municipalities, DOTs, and FHWA, with project scales ranging from small building development to large transportation projects.
Scott Richards, PE, PG
Senior Project Manager and Manager for the Glenwood Springs and Grand Junction, CO offices
Scott Richards is the Manager of the Glenwood Springs and Grand Junction, CO offices of Yeh and Associates, Inc. and brings 18 years of experience in geological and geotechnical engineering projects to the Western Slope of Colorado. This experience includes managing engineering and construction services for a variety of commercial and infrastructure projects, with his primary focus on vertical construction (with shallow and deep foundation options), roads, bridges, and airports. Scott is also well-versed in slope stability monitoring and analysis for municipalities, public utilities, and ski areas. He has performed geological engineering studies and hazards analyses as well.
Loree Berry, PE, APMP
Project Manager and Manager of the Ventura, CA office
Loree Berry brings over 15 years of experience providing geotechnical and geological engineering and project management services for a wide range of projects in southern California. Her project experience includes numerous roadway and bridge projects, water and wastewater facilities, public infrastructure projects, levees and large drainage systems, and vertical construction. She is proficient with agency permitting and compliance, field instrumentation and monitoring for landslides, vibration monitoring, and construction observation for deep foundations, anchored shoring, and ground improvement.