A Washington State Department of Natural Resources (DNR) permit is required (WAC 332-120-040 and RCW 58.04.015) for any work that would remove, adjusts, destroy or otherwise make a Survey Point or Monument no longer visible or readily accessible.  In addition, coordination with SPU Survey Unit, 206-684-4674, regarding street monument will be required prior to any work impacting existing survey point or monuments in the right-of-way. For more information on monuments, refer to the Seattle Public Utilities Survey website (especially Client Assistance Memo CAM 1401 Notes 4 and 21 and CAM 1402).