For TCS Tenants

Argonne National Laboratory (ANL), UChicago Argonne, LLC, and the Department of Energy (DOE) are considered the occupants or tenant of the Theory and Computing Sciences Building.

Authorized Person(s)
Our Authorized Person(s) to communicate requests to the Office of the Building are:

Base Building Contact: Judy Stickels, Manager, TCS Building Operations – Argonne National Laboratory
Data Center Contact: William Lucnik, Data Center Facility Manager – Argonne National Laboratory. Contact

Facilities Management / Office of the Building

The Theory and Computing Sciences Building is professionally managed by Ascent Corp.

The facilities management staff is available from 8:00 a.m. to 5:00 p.m., Monday through Friday. Engineering staff is available from 6:00 a.m. to 6:00 p.m. The Office of the Building is closed for most nationally recognized holidays. Janitorial coverage is on site from 5:30am to 7:00pm.

Building AddressBuilding 240 – Theory and Computing Sciences Building, 9400 S. Cass Avenue, Argonne, Illinois 60439

In the event of an emergency, this address should be given to the Police Department, Fire Department, or Emergency Medical System (EMS) department dispatcher. You can report an emergency by dialing 911 from any landline phone. For cell phones, dial 630-252-1911.

Local Mail Carrier: 42 Stephen Street (3.2 miles), Lemont, IL 60439, (630) 257-6204