Missouri Asbestos Regulations and Notification
What Missouri regulates
Missouri's asbestos program is built on 10 CSR 10-6.250, which implements the federal NESHAP (40 CFR Part 61, Subpart M). The rule covers demolition and renovation of facilities and asbestos abatement projects. The Missouri Department of Natural Resources (MoDNR) Air Pollution Control Program receives notifications; local air agencies may have separate requirements, so check the site location.
Thresholds and timing
For renovation or abatement, notification is triggered when the project removes or disturbs at least 260 linear feet of RACM on pipes, 160 square feet on other components, or 35 cubic feet when length or area cannot be measured. Demolition generally requires notification even if no asbestos is present. Submit a complete written notification at least 10 working days before the start date; weekends and state holidays do not count. The start date may not be earlier than the tenth working day after receipt. If the start date moves, amend the notification.
What the notification must show
Identify the owner/operator, site, abatement contractor, start and completion dates, amount and type of RACM, work practices, and waste disposal site. The owner/operator is responsible for filing, though a contractor may prepare it. Emergency demolitions require notification as soon as practicable and no later than the next working day.
Worked example
A contractor will remove 300 linear feet of pipe insulation and 100 square feet of floor tile. The pipe insulation exceeds 260 linear feet, so notification is required even though the tile is below 160 square feet. If work starts Monday March 10, the notification must be received by Monday February 24, because ten working days before March 10 are Feb 24-28 and Mar 3-7. Counting ten calendar days would be wrong.
Traps
Do not count calendar days, combine square feet and linear feet to reach a threshold, or assume demolition without asbestos needs no notice. Do not begin before the tenth working day or forget to amend a changed start date.