HI HB1258

Requires owners or operators of waste combustion facilities to develop and implement continuous monitoring or sampling plans for 20 air contaminants from each combustion unit, including dioxins, furans, PFAS, heavy metals, and particulate matter

Mandates real-time emissions data be reported on a publicly accessible website hosted by the Department of Health, with automatic email alerts for violations of emissions limits

Sets October 1, 2025 deadline for submitting monitoring plans to the Department of Health, with implementation required within three months of approval (extensions up to nine months possible)

Requires the Department of Health to set annual fees for waste combustion facility owners to cover website development and enforcement costs, and to submit annual reports to the legislature

Notes that current monitoring at facilities like H-Power (Covanta Honolulu) only tracks four pollutants continuously, while studies show continuous monitoring can reveal emissions 62% to over 1,000 times higher than annual stack testing indicates