A 42-year-old Livermore woman pleaded not guilty today to 67 felony counts alleging she committed sex crimes with two teenage boys.

Christine Shreeve Hubbs, who remains at the Santa Rita Jail in Dublin in lieu of $4.3 million bail, waived her right to have a speedy preliminary hearing and is scheduled to return to Alameda County Superior Court in Pleasanton on Oct. 14 for a pretrial hearing.

The charges against her include unlawful sexual intercourse with a minor, oral copulation, lewd acts on a child and exhibition of lewd material to a minor.

Hubbs, who has a husband and three children, was arrested on Aug. 5, a little more than a week after the mother of one of the alleged victims reported possible illicit activity between her son and Hubbs.

According to Livermore police, both boys were 14 years old when Hubbs began having sexual relationships with them.

In a separate case, Hubbs faces four counts of contributing to the delinquency of a minor and one count of discharge of a BB gun in a June 29 incident in which she is accused of driving her Hummer recklessly around Livermore while young male passengers shot Airsoft pistols out the window.

Hubbs is being represented by veteran Hayward criminal defense lawyer Jules Bonjour.