Any tank system susceptible to inundation by water from any source must be adequately anchored to prevent flotation, collapse, or lateral movement that might be caused by hydrodynamic and hydrostatic loads, including the effect of buoyancy. Tanks must be designed, installed and maintained in accordance with operating standards set forth in NFPA No. 30, section 2-6.6 (see section 598.1[j] of this Part) and in accordance with State and local flood plain regulations. Dikes in flood plains must be designed and installed to withstand structural damage and overtopping by a 100 year flood. If tanks are ballasted with water during flood warning periods, tank valves and other openings must be closed and secured in a locked position in advance of the flood. Ballast water removed from the tank after the flood must not be discharged to the waters of the State unless such discharge is in conformance with the standards of Parts 701, 702, 703 and 750 of this Title, as applicable.