ALBANY, N.Y. (AP) — A revised set of proposed regulations for hydraulic fracturing natural gas has been released by New York environmental officials who will begin taking public comment on them in December.

The voluminous technical document was made public by the Department of Environmental Conservation on its website Wednesday, a day before the deadline for adopting rules for the controversial drilling known as “fracking” or making changes and allowing more comment. It has been a year since the last public hearings on the original proposal. New York has not yet approved the technology, which drillers want to use to tap gas in the Marcellus Shale formation.