N.Y. Comp. Codes R. & Regs. tit. 6, § 219-4.4 – Operating requirements.

(a) No person may cause or allow emissions to the outdoor atmosphere having a six-minute average opacity of 10 percent or greater from any cremation unit.
(b) The owner or operator of a cremation unit must maintain a one-hour average temperature of at least 1600 degrees Fahrenheit in the secondary combustion chamber, with a minimum residence time for combustion gases of at least one second, at all times remains are being cremated.
(c) The owner or operator of a cremation unit subject to the requirements of this subpart must install, operate, calibrate, and maintain, in accordance with manufacturer's instructions, instruments for continuously monitoring and recording the temperature of the secondary (or last) combustion chamber.
(d) No person may combust materials other than human and animal remains, their associated containers, pathological waste, and incidental animal bedding in any cremation unit subject to the requirements of this Subpart unless prior written authorization has been obtained from the department.
(e) No person may cause or allow the combustion of human and animal remains in any cremation unit subject to the requirements of this Subpart unless a cremation certification form has been completed. Each cremation certification form shall contain the following information at a minimum:
1. (1) the name, title, and affiliation of the person providing the remains for cremation;
2. (2) an attestation signed by the person providing the remains for cremation attesting that the remains and their container do not contain materials prohibited from being combusted by this Subpart;
3. (3) the name and signature of the person accepting the remains for cremation; and
4. (4) the date the remains were accepted for cremation.
(f) No person may cause or allow remains to be charged at a crematory facility in excess of the manufacturer’s rated hourly capacity of the cremation unit.