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Green Building Certification

UST/AST Certification Program 

  • Announcements

    Here’s What’s Coming In 2012

    2012 will bring about a number of changes in the National Certification program. Here’s a list of changes you’ll need if you plan on taking an ICC certification exam after January 1.

    EPA Guidelines

    ICC certification as a Class A or Class B UST System Operator meets the criteria specified in federal EPA guidelines. Candidates are strongly encouraged to register and test now, as seating in Pearson VUE test centers is limited. Some sites are not open every day, so register early to ensure you will receive your desired test date and time.

    Request Paper Certificate

    You can now submit wall certificate requests for recently passed certification exams.

  • News & Info

    Computer-Based Test Scheduling

    Register for a computer-based exam (if available), by contacting Pearson VUE at 1-800-275-8301.

    Certified Code Professional Search

    Search ICC Certified Code Professionals

    Login Help

    Unsure of how to login to our new website? View the Login Instructions for assistance.

    Maryland Class A and Class B UST System Operators

    Please see this checklist regarding Class C Operators.


Petroleum storage tanks are regulated by federal and state laws. Many states require that tank workers be licensed or certified before being allowed to install, retrofit or decommission UST and/or AST systems or components. The ICC UST/AST Certification examinations can be used to complement state licensing programs. In some states, individuals are required to pass state-specific examinations.

This Certification Program is used as a mandatory requirement in whole or in part by several states and is available as a voluntary credential in states where there is not yet a mandatory UST or AST licensing requirement.

UST/AST Certification

Feedback and Appeals Process 

Committee Service

Committees are an important part of the ICC UST / AST Certification and Examination Program. The following committees provide oversight and development and maintenance functions for the Program. 

In addition to these committees, there are several Exam Development Committees on a state level which function to develop and maintain state specific UST/AST exams. Many of these state committees are ad-hoc in nature, with members being appointed by the state agencies.

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IECC & ASHRAE