Friday, December 24, 2010 – 03:30 p.m.

A lawsuit filed against the County of San Bernardino and District Attorney Michael Ramos by an alleged former mistress is moving closer to the deposition phase.

In a hearing earlier this week a Superior Court judge left four of five claims by plaintiff Cheryl Ristow open, but required her attorney to insert additional foundation into the written complaint.

A requirement Ristow’s lawyer already complied with in an amended complaint filed on December 15, according to court records.

Thrown out was a claim for Common Law Sexual Harassment.

The remaining causes of action consist of Sexual Harassment, Failure to Prevent Harassment, Violations of the Business and Professions Code, Intentional Infliction of Emotional Distress.

Ristow, who had an affair with Ramos spanning approximately 18-months from the years 2003 to 2006, claims she was retaliated against during the summer of 2009, for refusing to keep quiet, when news of her prior relationship with Ramos became public in a local community newspaper.

Ristow says she was targeted for discipline after Ramos contacted her by cell phone and requested she deny the affair occurred, which she refused.

Ramos has categorically denied having affairs with any women, including Ristow, and all aspects of her claim.

Last year, county supervisors spent $140,000 investigating Ramos, regarding his offices actions against Ristow. However, shortly after Ramos was cleared by the investigation allegations surfaced that County Counsel Ruth Stringer violated board of supervisors direction and interfered with the outside law firm hired to handle the matter.

In August 2009, Ristow resigned her position as an investigative technician with Ramos’ office.

Sources say attorney James Reiss, who is Ristow’s counsel, holds aces in this case by way of five sworn affidavits signed by women who state they had past sexual affairs with Ramos.

The case is set for a case management conference on February 4, 2010.