Response action
Response action means remove, removal, remedy and remedial action, as those terms are defined by section 101 of CERCLA, 42 U.S.C. 9601, including enforcement activities related thereto.
Source
40 CFR § 304.12
Scoping language
Terms not defined in this section have the meaning given by section 101 of CERCLA, 42 U.S.C. 9601, or the National Oil and Hazardous Substances Pollution Contingency Plan, 40 CFR part 300. All time deadlines in this part are specified in calendar days and shall be computed in the manner described in Rule 6 of the Federal Rules of Civil Procedure.