Internal Revenue Service · Document 2026-20061
Superfund Tax on Chemical Substances; Request To Modify List of Taxable Substances; Notice of Filing for Styrene Isoprene Block Copolymer; x+z=482, y=2,178.51, a=1.70
Published October 1, 2026. This page separates the dates in the Federal Register notice by event type.
Dates listed in the notice
| Event | Date and time as listed |
|---|---|
| Hearing or intervention request due | November 30, 2026 |
How the dates were read
Follow the notice before filing
This calendar reads dated events in the Federal Register’s DATES notes. The snapshot includes future dates found in the Register’s date query and a review of notices published in the prior 120 days. It was checked on November 10, 2026.
- Initial comments, replies, hearings, and requests for hearings appear separately when the notice supplies distinct dates. Some notices need a separate deadline calculation or an agency portal, so coverage varies.
- We link changed deadlines when an explicit revision matches an earlier notice by docket, agency and subject. The comparison pairs the same phase and counts calendar days between the two dates.
- Calendar files include an exact time when the note identifies a recognizable time zone. Other entries carry the printed date as an all-day reminder. Follow the notice for any filing instructions and later changes.
Federal Register data documentation · Regulations.gov · Download this snapshot