Alternative method means any method of sampling and analyzing for an air pollutant that is not a reference or equivalent method but that has been demonstrated to the satisfaction of the commissioner and the U.S. EPA to, in specific cases, produce results adequate for a determination of compliance.
Actuarial method means the method of allocating a fixed level monthly payment on an obligation between principal and interest, pursuant to which the portion of such payment that is allocated to interest is equal to the product of (a) 1/12, (b) the fixed annual rate of interest on such obligation and (c) the outstanding principal balance of such obligation.
Reference method means any direct test method of sampling and analyzing for an air pollutant as specified in 40 CFR 60, Appendix A*.
Testing service means a national testing service selected by the board.
Equivalent method means any method of sampling and analyzing for an air pollutant that has been demonstrated to the satisfaction of the commissioner and the U.S. EPA to have a consistent and quantitatively known relationship to the reference method under specific conditions.