(a) Any person who owns or operates a facility subject to this Subpart must install, operate and maintain in accordance with manufacturer's instructions, instruments meeting specifications acceptable to the commissioner for continuously monitoring and recording the following emission and operating parameters:

1. (1) primary combustion chamber exit temperature;
2. (2) secondary (or last) combustion chamber exit temperature;
3. (3) temperature leaving the final air pollution control device;
4. (4) carbon monoxide; and
5. (5) opacity. If an opacity monitor cannot be applied satisfactorily, alternate apparatus may be employed, with the approval of the commissioner, to demonstrate acceptable operation of the particulate removal device. Monitoring instruments for continuously measuring opacity will be subject to performance specification 1 set forth in title 40 CFR part 60, Appendix B (see section 200.9 of this Title).