EVERETT — Everett City Councilman Mark Olson is expected to ask his colleagues Wednesday for an extended leave of absence while he is being investigated for allegations of sexual assault.

The embattled councilman earlier today said he is preparing a written statement, to be released this afternoon, asking the council to allow him to step aside until November without giving up his seat.

At least one councilman says that is not enough and wants Olson to resign.

“I think he should resign,” City Councilman Arlan Hatloe said. “It’s very disappointing to see what’s unfolded. To spare the rest of the council, the staff and the city government further embarrassment, I think he should step down.”

Olson, 52, an Everett personal injury attorney, has been accused of sexually assaulting a woman at his downtown Everett law office in June after a night of drinking. He acknowledges having intercourse with the woman, but contends the sex was consensual.

The woman says that she doesn’t remember consenting to a sexual encounter and believes she was too intoxicated to provide consent.

The allegation has been forwarded to Skagit County Prosecutor Rich Weyrich. No charges have been filed.

Last week, a Cascade District Court judge in Arlington found that Olson violated a probation order the night of the alleged assault. That order required him to stay sober until 2008.

Olson was ordered to stay away from alcohol after a 2003 drunken-driving arrest on the Tulalip Indian Reservation, when he nearly hit a tribal police officer who had stopped another vehicle, police said.

A test allegedly showed Olson’s blood-alcohol level was nearly twice the legal limit.

The council is scheduled to meet Wednesday at 6:30 p.m. at the Everett City Council Chambers, 2930 Wetmore Ave.