Below-Grade Tank

“Below-grade tank” means a vessel, excluding sumps and pressurized pipeline drip traps, where a portion of the tank’s sidewalls is below the surrounding ground surface’s elevation.  Below-grade tank does not include an above ground storage tank that is located above or at the surrounding ground surface’s elevation and is surrounded by berms.

Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. Regulations


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