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Carol Stream Geotechnical

Steve Koester, P.E.

Steve Koester, P.E. Vice-President

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Michael Machalinski, P.E.

Michael Machalinski, P.E. Vice-President

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Alfredo Bermudez, P.E.

Alfredo Bermudez, P.E. Senior Geotechnical Engineer

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Tim Peceniak, P.E.

Tim Peceniak, P.E. Senior Geotechnical Engineer

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Sam Patrick

Sam Patrick Geotechnical Staff Engineer

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Darin Delaney

Darin Delaney Contract Drilling & Safety Mgr.

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