No further remedial

No Further Remedial Action Planned
Determination made by EPA following a preliminary assessment that a site does not pose a significant risk and so requires no further activity under CERCLA.
No Observable Adverse Effect Level (NOAEL) ...

No Further Remedial Action Planned
No Observable Adverse Effect Level (NOAEL)
No Till
Noble Metal
Noise
Non-Binding Allocations of Responsibility (NBAR)
Non-ionizing Electromagnetic Radiation
Non-Aqueous Phase Liquid (NAIL) ...

See also: Nitrogen, Non-point source, Nitrogenous, Point source, Pollutant