RODEO -- A presentation by a group of environmentalists about a propane-and-butane recovery project at the Phillips 66 refinery, scheduled for next week, has been postponed because the Contra Costa County panel hosting it will be short of a quorum, the county announced.

Crockett-Rodeo United to Defend the Environment, also known by its initials C.R.U.D.E., was supposed to make the presentation at Thursday's monthly meeting of the Rodeo Municipal Advisory Council. According to the meeting agenda, the county's chief environmental health and hazardous materials officer, Randy Sawyer, was supposed to attend.

A C.R.U.D.E. member said this week the presentation has been rescheduled to a town-hall meeting from 7 p.m. to 9 p.m. May 8 at the Rodeo Senior Center, 199 Parker Ave.

The Phillips 66 project is under county review. A hearing in January before the county Board of Supervisors on appeals of a land use permit and consideration of the final environmental impact report was continued to April 1, then to May 13, to allow more time for the county staff and the refinery to address questions raised by several agencies and by the public.

The Rodeo MAC, with seven members at full complement, has had difficulty mustering a quorum of late. The membership is down to four, the minimum for a quorum, after several resignations last year. The January meeting, too, was canceled for lack of a quorum.

RMAC members are nominated by District 5 Supervisor Federal Glover and appointed by the full Board of Supervisors. Senior district representative Ed Diokno said Friday that Glover expects to interview several applicants as early as next week.

Contact Tom Lochner at 510-262-2760. Follow him at twitter.com/tomlochner