VERTEX has Experts that Talk the Talk and Walk the Walk.

Unlike others, VERTEX provides forensic consulting alongside traditional AEC services which allows for a 360 degree view of your project.

VERTEX Services


Need an expert for your case?

Our forensics experts work alongside AEC specialists which enhances our skills and bolsters the credibility of our expert consultants.

Find an Expert


VERTEX delivers innovative solutions on complex projects globally.

Since 1995, VERTEX has completed over 90,000 projects.

View Portfolio


VERTEX believes in a Lifetime of Learning philosophy.

Stay current with our industry experts as they share their insights and knowledge on the built environment.

View Insights

Grow Your Career

Join Our Team

VERTEX is looking for talented individuals to join a highly technical team of forensic consultants, design engineers, construction managers, and environmental scientists.

Learn More

Contact Us

Have a question or want to speak with a technical professional?

VERTEX is a multi-discipline firm with global coverage. Our international network of resources enables us to provide multi-national clients with the most qualified local professionals who understand the culture, language, and regulatory framework.

Call Us: 888.298.5162

Call Us

Call us at 888.298.5162.

William Otten

Senior Project Manager, I.H.B.S.

Mr. Otten joined VERTEX in May of 2014 and serves as Senior Project Manager for the Pennsylvania office. Prior to VERTEX, Mr. Otten was employed as an Environmental Specialist/ Senior Project Manager with the same company for over 20 years.

Mr. Otten has extensive experience in the Environmental Consulting industry in a wide range of environmental aspects. He has completed over 200 Phase I Environmental Site Assessments in compliance with ASTM guidelines for a diverse client base. He has also conducted numerous Phase II Environmental Site Assessments involving soil and groundwater sampling, geophysical subsurface evaluations and underground storage tank closure projects.

Mr. Otten specializes in microbial investigations and indoor air quality evaluations. He has completed over 100 industrial hygiene projects including exposure evaluations to meet applicable OSHA standards and evaluation of surface contamination via wipe testing for various contaminants. He has also completed a myriad of asbestos identification surveys and has over 12,000 hours of project management experience for asbestos abatement projects. In addition, Mr. Otten has provided expert testimony/litigation support for clients involving Phase I Environmental Site Assessments and mold investigation projects.

Education & Certification

B. S., Earth Sciences, Pennsylvania State University