Claim means the amount sought by EPA as recovery of response costs incurred and to be incurred by the United States at a facility, which does not exceed $500,000, excluding interest.
40 CFR § 304.12
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.