Michigan Compiled Laws, Chapter 339. Occupational Code § 339.2201

(i) The performance of professional services such as consultation, investigation, research, planning, design, or responsible field observation in connection with the development of land areas where, and to the extent that the dominant purpose of the services is the preservation, enhancement, or determination of proper land uses, natural land resources, ground cover and planting, naturalistic and aesthetic values, the settings and approaches to structures or other improvements, natural drainage, and the consideration and determination of inherent problems of the land relating to erosion, use and stress, blight, or other hazards.

(ii) The location and arrangement of tangible objects and features incidental and necessary to the purposes outlined in this article.