| 22.__Archaeological excavation.__Archaeological excavation |
adjacent to a great pond, freshwater wetland, coastal wetland, |
sand dune system, river, stream or brook as long as the |
excavation is conducted by an archaeologist listed on the Maine |
Historic Preservation Commission level 1 or level 2 approved |
list, and that unreasonable erosion and sedimentation is |
prevented by means of adequate and timely temporary and permanent |
stabilization measures. |