Weiss Associates





"Many companies provide services similar to ours. Weiss Associates distinguishes itself by setting consistently high standards for quality work, responsiveness, and value – and then meeting them. We take special pride in putting forth extra effort in every element of a project."

Richard B. Weiss

About Weiss Associates

Weiss Associates is a full-service environmental science, engineering, and management firm serving both the private and public sectors since its founding in 1980. Weiss Associates has established a reputation for quality in characterizing and remediating soil and groundwater, and fulfilling a wide range of permitting, water resource engineering, and regulatory strategy services.

Weiss Associates delivers creative, practical and responsive solutions to environmental challenges. We provide these solutions by:

  • Listening to our clients and understanding their business objectives.
  • Maintaining the highest standards of scientific, engineering, and management innovation.
  • Creating a work environment that promotes teamwork and attracts talented, motivated, and creative staff.

We partner with our clients to provide solutions to complex environmental challenges and assist them in achieving regulatory compliance. Over the years, we have completed more than 1,900 subsurface characterizations; designed; installed and/or maintained more than 450 groundwater and soil remediation systems; and have completed all types of CERCLA and RCRA compliance documents for many sites, from small, simple underground storage tank sites to large, complex industrial and government facilities.

Almost half of our technical staff are California-registered engineers, hydrogeologists, geologists, and environmental professionals. This, combined with our responsiveness, attention to detail, and client focus, is why Weiss is recognized by regulators in the industry as one of the most qualified and effective environmental consulting firms.

Weiss is incorporated in the State of California as AguaTierra Associates Inc., doing business as (dba) Weiss Associates. We are a State of California-certified small business, and a small business under Federal NAICS code 541620 for Environmental Consulting Services, 541330 for Engineering Services and 562910 for Remediation Services. We are headquartered in Berkeley, and our South Bay office is in Mountain View, California.