On Aug. 25, 2011, the Environmental Quality Commission approved the repeal
of the UST Soil Matrix Licensing Rules (Chapter 340, Division 162.) The repeal
became effective on Sept. 1, 2011.
In 1989, the Oregon Department of Environmental Quality adopted Soil Matrix
Cleanup rules (OAR 340-122-320 through 340-122-0335) to address simple
underground storage tank cleanups at regulated UST sites where groundwater was
At that time, DEQ recognized the need to license businesses and individuals
who performed these simple cleanups as soil sampling requirements were new. The
removal and decommissioning of USTs was traditionally performed by excavation
contractors who were unfamiliar with the new environmental regulations. Prior to
the Soil Matrix rules, it was common for contractors removing tanks to simply
dig up contaminated soil around the tanks until they could no longer see or
smell it. To protect both the environment and the health and safety of the
contractors, DEQ developed its soil matrix registration and licensing program.
What types of licenses were issued for Soil Matrix Cleanups?
In 1990, DEQ adopted Division 162, Registration and Licensing Requirements
for Underground Storage Tank Soil Matrix Cleanup Service Providers and
The UST Soil Matrix Cleanup Service Provider License was for businesses
performing soil matrix cleanup services at regulated tank sites. The license fee
was $600 for a two-year license.
The UST Soil Matrix Cleanup Supervisor License was for individuals performing
soil matrix cleanups. Supervisors demonstrated their knowledge of the rules by
passing a qualifying examination given by the International Code Council through
a professional testing company. The examination cost $70; the license fee for a
two-year license was $150.