System and Business Office Staff Directory
 
 
 

Mike Zimmerman

Director

630-691-7591


mikez@daoes.org

Sue Grzadziel

Executive Secretary

630-691-7590

sueg@tcdupage.org

Kathy Rosenwinkel

Community Relations Coordinator

630-691-7572

kathyr@tcdupage.org

Sonia Martinez

Business Manager

630-691-7593


soniam@daoes.org

Diana DeMarco

Accounting Clerk

630-691-7595


dianad@tcdupage.org

Donna Contraveos


Business Office Administrative Asst.

630-691-7594

donnac@tcdupage.org

Bob Maldonado

Maintenance Supervisor

630-691-7586


bobm@tcdupage.org

 
 
 
 
 
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