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, 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.