Commerce approves the following methods of corrosion protection (CP):
1. Corrosion-Resistant Materials: Tanks and
piping can be constructed of materials that are
inherently corrosion-resistant (e.g. fiberglass
2. Certified Non-Corrosive Environment: Tanks and
piping are installed at sites that have been determined
by a certified corrosion expert to be non-corrosive
during the operational life of the UST system.