Abatement means any set of measures designed to permanently eliminate lead-based paint or lead-based paint hazards (see definition of "permanent"). Abatement includes:
   (1) The removal of lead-based paint and dust-lead hazards, the permanent enclosure or encapsulation of lead-based paint, the replacement of components or fixtures painted with lead-based paint, and the removal or permanent covering of soil-lead hazards; and

   (2) All preparation, cleanup, disposal, and post abatement clearance testing activities associated with such measures.

Abatement may be required in units affected by subparts C G J L

24 CFR 35.1325 Abatement.
   Abatement shall be performed in accordance with methods and standards established either by a State or Indian tribe under a program authorized by EPA, or by EPA at 40 CFR 745.227(e), and shall be completed by achieving clearance in accordance with Sec. 35.1340. If encapsulation or enclosure is used as a method of abatement, ongoing lead-based paint maintenance activities shall be performed as required by the applicable subpart of this part in accordance with Sec. 35.1355. Abatement of an intact, factory-applied prime coating on metal surfaces is not required unless the surface is a friction surface.

Abatement is further defined in the EPA lead rule at 40 CFR 745.223

Read the Joint EPA-HUD Letter about Rehabilitation and Abatement

Interpretive Guidance:
Clearance After Exterior Only Paint Stabilization
Interim Controls and Abatement
When is the Use of Certified Abatement Personnel Required?