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Illinois Department of Transportation

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Andrew Stolba
(217) 782-7086
Andrew.Stolba@illinois.gov
Chief Geologist
Bureau of Materials 
Office of Highways Project Implementation

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Illinois Department of
Transportation
Hanley Building
2300 S. Dirksen Parkway
Springfield, IL 62764

(217) 782-7820 or
TTY (866) 273-3681

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