20 ILCS 5/5-675
The Secretary of Transportation and the Director of Natural Resources are respectively authorized, with the consent in writing of the Governor, to acquire by private purchase, or by condemnation in the manner provided for the exercise of the power of eminent domain under the Eminent Domain Act , any and all lands, buildings, and grounds for which an appropriation may be made by the General Assembly to their respective departments. To the extent necessary to comply with the federal Uniform Relocation Assistance and Real Property Acquisition Policies Act, Public Law 91-646, the Department of Transportation and the Department of Natural Resources, respectively, are authorized to operate a relocation program and to pay relocation costs. The departments are authorized to exceed the maximum payment limits of the federal Uniform Relocation Assistance and Real Property Acquisition Policies Act when necessary to ensure the provision of decent, safe, or sanitary housing or to secure a suitable relocation site.
The Director of Central Management Services is authorized, with the consent in writing of the Governor, to acquire by private purchase, or by condemnation in the manner provided for the exercise of the power of eminent domain under the Eminent Domain Act , all other lands, buildings, and grounds for which an appropriation may be made by the General Assembly. To the extent necessary to comply with the federal Uniform Relocation Assistance and Real Property Acquisition Policies Act, Public Law 91-646, the Department of Central Management Services is authorized to operate a relocation program and to pay relocation costs. The Department is authorized to exceed the maximum payment limits of the federal Uniform Relocation Assistance and Real Property Acquisition Policies Act when necessary to ensure the provision of decent, safe, and sanitary housing or to secure a suitable relocation site. The Department shall make or direct the payment of the relocation amounts from the funds available to acquire the property.
20 ILCS 5/5-675