Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.63522

Sec. 63522. If the department finds that the probable total annual production at all locations of a surface coal mining operator will not exceed 100,000 tons, the determination of probable hydrologic consequences and statement of the results of test borings or core samplings required by section 63516,  1 on the written request of the operator, shall be performed by a qualified governmental agency or private consultant designated by the department, and the cost of the preparation of the determination and statement shall be assumed by the department.