198 Neb. Admin. Code, ch. 4, § 007

If plumbing within a secondary containment or loadout facility is directly connected to a water well, other than a public water supply pipeline, servicing the facility, a backflow prevention device is to be installed to protect the water source. Local plumbing codes or regulations may apply if more restrictive. All equipment is to be installed, operated and maintained in accordance with the manufacturer's recommendations. The minimum safety equipment will be one of the following:

007.01 A reduced pressure principle device which meets the American Water Works Association (AWWA) Standard C 506-78 for backflow prevention devices; or

007.02 Air gap separation. Air gap is a physical separation between the discharge end of a water pipeline and an open or nonpressurized receiving vessel. To have an acceptable air gap, the discharge end of the pipe is to be at least two pipe diameters above the top rim of the receiving vessel. If the discharge pipe is in a secondary containment facility or loadout facility, the discharge end is to be at least two pipe diameters above either the topmost rim of the receiving vessel or the highest liquid holding capacity of the containment facility, whichever is higher.

Notes

198 Neb. Admin. Code, ch. 4, § 007

Amended effective 12/10/2019 Amended effective 4/25/2020