"Leak-detection system" means a system capable of detecting the failure of either the primary or secondary containment structure or the presence of a release of hazardous waste or accumulated liquid in the secondary containment structure. Such a system must employ operational controls (e.g., daily visual inspections for releases into the secondary containment system of aboveground tanks) or consist of an interstitial monitoring device designed to detect, continuously and automatically, the failure of the primary or secondary containment structure or the presence of a release of hazardous waste into the secondary containment structure.
128 Neb. Admin. Code, ch. 1, § 087