Section 33-24-05-1106 - Secondary containment devices1. Secondary containment for tanks must include one or more of the following: a. A liner (external to the tank).c. An equivalent device (documentation of equivalency must be maintained at the facility).2. External liner systems must be: a. Designed or operated to contain one hundred percent of the capacity of the largest tank within its boundary.b. Designed or operated to prevent run on or infiltration of precipitation into the secondary containment system unless the collection system has sufficient excess capacity to contain run on or infiltration. The additional capacity must be sufficient to contain precipitation from a twenty-five year, twenty-four hour rainfall event.c. Free of cracks or gaps.d. Designed and installed to surround the tank completely and to cover all surrounding earth likely to come into contact with the waste if the waste is released from the tanks (capable of preventing lateral as well as vertical migration of the waste).3. Double-walled tanks must be: a. Designed as an integral structure (an inner tank completely enveloped within an outer shell) so that any release from the inner tank is contained by the outer shell.b. Protected, if constructed of metal, from both corrosion of the primary tank interior and of the external surface of the outer shell.c. Provided with a built-in continuous leak detection system capable of detecting a release within twenty-four hours.N.D. Admin Code 33-24-05-1106
Adopted by Administrative Rules Supplement 2016-359, January 2016, effective 1/1/2016.General Authority: NDCC 23-20.3-03
Law Implemented: NDCC 23-20.3-03, 23-20.3-04, 23-20.3-05