N.Y. Comp. Codes R. & Regs. tit. 6, § 212-1.7 – Sampling and monitoring.

(a) Facility owners and/or operators of a process emission source required by the department to demonstrate compliance with this Part may be required to conduct capture efficiency and/or stack emissions testing using acceptable and approved procedures pursuant to Part 202 of this Title.
(b) Facility owners and/or operators of any emission source equipped with either a thermal or catalytic oxidizer, fixed bed carbon absorption unit or refrigerated condenser must install continuous monitors and data recorders for the applicable parameters listed in paragraphs (b)(1) through (b)(5) of this subdivision prior to start-up of a new or modified process emission source(s). Continuous monitors must be operated at all times when the associated emission control equipment is operating except during any quality assurance and routine maintenance activities. Each monitor must be operated according to a quality assurance program approved by the department. Alternative monitoring methods may be employed subject to department approval.
1. (1) the exhaust gas temperature from thermal or catalytic oxidizer;
2. (2) the temperature rise across catalytic oxidizer beds;
3. (3) the VOC outlet concentrations from fixed-bed carbon adsorption units;
4. (4) the outlet gas temperature from refrigerated condensers; or
5. (5) any other parameters required by conditions in the State facility or title V permit for the process emission source.
(c) For the purpose of ascertaining compliance with this Part, the department may obtain or require the facility owner or operator of an emission source to provide a sample of any type five or six refuse (see table 1 of appendix 2 of Part 219 of this Title for classifications of refuse) where such refuse is an input material of the process operation.
(d) Any facility that was subject to this section after June 1, 1995, will remain subject to these provisions for all applicable parameters listed in paragraphs (b)(1) through (b)(5) of this section.