Mark R. Collier, B.A.

Team Leader/Associate Geologist
Environmental Site Assessments Section

Phone: 217-300-1171
E-mail: mcollier@illinois.edu


Updated 04/04/2012 SLD

ILLINOIS STATE GEOLOGICAL SURVEY
615 E. Peabody
Champaign, IL 61820
217-333-4747
info@isgs.illinois.edu

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