225) EPA has stated that a pyrolysis regulation would be very similar to the HMIWI final rule, but that some definitions will be different, the emission limits are likely to be more stringent, and the monitoring and testing requirements will be tailored to the unique characteristics of pyrolysis units.
229) The HMIWI Final Rule does not regulate cement kilns,(230) however, because EPA recognizes that cement kilns differ from HMIWIs in design, operation, and size.
247) Incinerators that burn ten percent or less HMIW also are excluded from the HMIWI regulation.
The new standards in the Final Rule implement CAA sections 111 and 129 and apply to any new HMIWI for which construction is commenced after June 20, 1996,(249) which is the date of the 1996 Reproposal of the rule.
Thus the MACT floor for this type of HMIWI was the level of emissions achieved by this control technology.
The emission limitations in the HMIWI Final Rule, set forth in Table 2 below, are based on the emission control technologies evaluated in the 1996 Reproposal.
After the date on which the initial performance test has been or is required to be completed, no HMIWI is allowed to discharge from a stack into the atmosphere any gases that exhibit greater than ten percent opacity, measured at six-minute block averages.
305) After the date on which the initial performance test is completed or is required to be completed, no HMIWI is allowed to discharge from an ash conveying system visible emissions of combustion ash into the atmosphere in excess of five percent of the observation period.
309) An affected facility shall have a fully trained and qualified HMIWI operator onsite or within one hour of the facility at all times the facility is operating.
To become legally qualified, an HMIWI operator must obtain at least one of the following levels of experience in addition to completing the required training: 1) six months experience as an HMIWI operator, 2) six months experience as a direct supervisor of an HMIWI operator, or 3) completion of at least two burn cycles while being observed by two qualified HMIWI operators.
324) The siting requirements, as promulgated, require the owner or operator of an HMIWI subject to regulation to prepare an analysis of the impacts of the facility that must consider air pollution control options that minimize, on a site-specific basis and to the maximum extent possible, the potential risks to public health and the environment.
355) Finally, an owner or operator must obtain monitoring data whenever the HMIWI is operating except when the monitoring equipment malfunctions or is being repaired or calibrated.