(a)

(1) To determine compliance with the standards for sulfur dioxide specified in §60.642(a), during the initial performance test as required by §60.8, the minimum required sulfur dioxide emission reduction efficiency (Z) is compared to the emission reduction efficiency (R) achieved by the sulfur recovery technology.

(i) If R ≥ Zi, the affected facility is in compliance.

(ii) If R < Zi, the affected facility is not in compliance.

(2) Following the initial determination of compliance as required by §60.8, any subsequent compliance determinations that may be required by the Administrator would compare R to Zc.

(b) The emission reduction efficiency (R) achieved by the sulfur reduction technology shall be determined using the procedures in §60.644(c)(1).

[50 FR 40160, Oct. 1, 1985, as amended at 54 FR 6679, Feb. 14, 1989]