Great Lakes Dredge & Dock Corp., Oak Brook, Ill., has acquired Terra Contracting for $20 million. Terra provides remediation, maintenance/repair, abatement and emergency response services. Terra owner Steve Taplin has been named president of the new company.

Headquartered in Kalamazoo, Mich., Terra employs approximately 200 engineering, operations and administrative staff and serves customers in more than 30 states in the environmental, infrastructure, energy, industrial, transportation, waste water and construction sectors. Terra