WEST CHICAGO — The Community High School District 94 Board of Education has released details of its final contract proposal to the West Chicago High School Support Staff Association, which represents custodial and maintenance employees, personal care and program assistants, deans’ assistants, administrative assistants and clerks.

The school district and association have been negotiating since February 2012 to create a new contract to replace the previous one, which expired on June 30.

The union declared an impasse Feb. 28 after the two sides failed to reach an agreement during a negotiation session that night.