Runway Protection Zones:  A two dimensional trapezoidal area at ground level prior to the threshold or beyond the runway end to enhance the safety and protection of people and property on the ground.  Airports receiving federal monies are required to control Runway Protection Zones from incompatible land uses. See FAA Order 5100.38C (appendix 7 and Chapter 7 - section 701). See also FAA AC/150 5300-13A (information on runway protection zones can be found in section 310, page 70; RPZ dimensions can be found starting on page 263). FEE ACQUISITION IN THE RPZ MUST BE CONSIDERED BEFORE AVIGATION EASEMENTS. If fee acquisition is not reasonable or practical then adequate documentation must be supplied and approved by MDOT prior to acquisition of easements. Existing incompatible uses inside the RPZ may only require an avigation easement to prevent additional incompatible uses. Airport sponsors are encouraged to complete the FAA Great Lakes Region Runway Protection Zone - Alternative Analysis form to justify less than fee acquisition.