Our Firm

Multi-disciplined Consulting Engineering Firm

Our Company

352

Projects Completed

120+

Happy Customers

12

Awards Received

50

Years In Service

History

Since 1972

In 1972, Allen G. Wassenaar opened a soil and foundation engineering office in Denver and focused on providing recommendations for foundation systems. The business operated out of Al’s home until he purchased a building on South Ivanhoe Street in Denver in 1978. In 2020, the company moved to a new building on South Zuni Street in Englewood. Over the past 50 years, AGW has grown to incorporate a multitude of geotechnical and environmental services, including state-of-the art laboratories for testing the engineering properties of concrete, soil, and asphalt. Since its inception, we have been a trusted partner to many land developers, commercial real estate owners, architects, municipalities, and general contractors/builders in Colorado’s construction industry. We are immensely proud of our success in Colorado and strive to continue contributing in meaningful ways to the communities in which we work.

Our Vision

AGW will deliver superior engineering, consulting, field, and lab services; will be recognized as the most reliable, responsive, and knowledgeable consulting engineering firm in the region; will maintain a quality, dedicated, happy staff; and will meet our clients’ needs to assist in their success.

Our Team

Meet Our Team

Pedro D. Manriquez, P.E.

President

Pedro is a Senior Engineer at AGW. He earned his Bachelor’s Degree in Civil Engineering from the University of Texas El Paso and has over 10 years of experience in the geotechnical engineering field. His experience includes pavement design, pavement evaluations, geotechnical analyses, project management, and report preparation. His projects have included numerous residential, commercial, capital improvement, pavement management, and infrastructure projects.

Greg Katz

Drilling Department Manager

Greg has a Bachelor’s degree from the University of Colorado and worked in the geotechnical engineering profession for over 30 years. Starting at AGW in 1992, he has performed construction observation and materials sampling/testing services on numerous construction sites that include residential, commercial, industrial, school, church, infrastructure, and municipality projects. His experience includes project proposal preparation, coordinating utility locating services, scheduling drilling subcontractors, and overall supervision and technical direction of drilling operations and engineering technicians. He is a member of the AGW Safety Committee.

Michael Conner, P.E.

Soils Department Manager

Michael Conner is a Professional Engineer registered in Colorado with over thirty years of experience in the geotechnical consulting industry and currently manages the Soil Department at AGW. Mike is a Colorado University alumni whose expertise includes performing and managing diverse types of residential, industrial and commercial geotechnical projects. His design experience includes work in residential and commercial site development, school projects from elementary school additions to high school new constructions and several types of municipal projects.

Jon Waanders

Field Department Manager

Jon has nearly 25 years of experience in construction inspection and materials testing both in the field and laboratory. He is a NICET Level 3 Technician and is experienced in residential subdivisions, commercial buildings, schools, dams, airports, and municipal projects.

Nicholas S.J. Sansoni, E.I.

Residential Department Manager

Nick is a Staff Engineer at AGW. He earned a Bachelor of Science Degree from Colorado State University in both Civil Engineering and Psychology and has over 10 years of experience in the geotechnical engineering field. His project experience includes subsurface investigations, pavement design, and foundation construction of single and multifamily residences.

Rachel Peterson, P.G.

Environmental Department Manager

Rachel Peterson is a Professional Geologist with over nineteen years of experience in the environmental consulting industry and manages the Environmental Department at AGW. Her expertise includes performing and managing diverse soil, groundwater, vapor intrusion, and remediation projects. She is a past president of the Rocky Mountain Association of Environmental Professionals, is Board Secretary for The Energy Leadership Institute, and serves on the board of the Rocky Mountain Chapter of American Association of Radon Scientists and Technologists.

Tod Kramer

Senior Industrial Hygienist

Tod earned his Bachelor’s Degree in Microbiology and a Master’s Degree in Environmental Health from Colorado State University. Tod has over 30 years of experience in the industrial hygiene field. His extensive experience includes industrial hygiene surveys, air quality investigations, asbestos consulting, disaster assessment and mitigation expertise and expert witness services. He is a member of the American Industrial Hygiene Association and is certified as an Asbestos Building Inspector/Management Planner, Asbestos Project Designer and Asbestos Air Monitoring Specialist.

Adam Spencer

Controller

Adam is the Controller at AGW. He earned his Bachelor’s Degree in Economics from Metropolitan State University of Denver and obtained an MBA specializing in Accounting and Finance from Regis University. Adam has been with AGW since 2017 and has worked in Financial Services and Accounting for over 10 years.

Ashley A. McDaniels, P.E.

Senior Engineer

Ashley is a Senior Engineer at AGW. She earned her Bachelor’s Degree in Civil Engineering from Northern Arizona University. Ashley has over 12 years of experience in geotechnical engineering. Her experience includes project management, subsurface investigations, foundation design, site development recommendations, and construction materials testing and observation. Her projects have included residential, commercial, and infrastructure projects.

Kathleen Noonan, M.S., P.E.

Senior Geotechnical Engineer

Kathleen is a Senior Geotechnical Engineer with AGW. She earned her Bachelor’s Degree in Civil Engineering from Virginia Tech and obtained a Masters Degree in Civil Engineering with a Geotechnical Emphasis from the University of Colorado at Boulder. Kathleen has over 28 years of experience in civil and geotechnical engineering. Her experience includes subsurface investigations, construction materials testing and observations, project management, retaining wall design, slope stability analysis, and foundation design. She is a past president of the Colorado Association of Geotechnical Engineers.

Joe Coleman

Project Manager

Joe Coleman is a Project Manager for the Field Department. He earned his Bachelor’s Degree in Civil Engineering from Metropolitan State University and has over 10 years of experience in construction inspection and material testing throughout the Denver Metro area and Front Range. His projects have included residential subdivisions, commercial buildings, and municipal projects.