wa-ef-mtbkr2022-1-3_control-points.xlsx

This is a Survey Control Points spreadsheet for the Mt. Baker-Snoqualmie Forest Road 11 MP 23.9 Repair project. The document establishes survey control data and coordinate systems for the construction project identified as WA ERFO FS MTBKR605 2022-1(3), with field work conducted in July 2023 and final adjustments completed in August 2023. The project uses Washington North State Plane Coordinate System (SPCS) NAD83 2011 with orthometric elevations based on NAVD88 GEOID18, epoch date 2010.000, and all measurements in international feet.

The control sheet documents four survey control points (23101, 23102, 23103, and 23104) with their respective state plane coordinates, orthometric elevations, geographic coordinates (latitude/longitude), ellipsoid heights, and combined scale factors. Each point is marked with a 5/8-inch iron pin with FHWA aluminum cap. The coordinates range from approximately 637,587 to 637,195 feet North and 1,456,173 to 1,456,719 feet East, with elevations between 835.090 and 876.919 feet. The document was last revised on September 20, 2023, and references the source file location as c:\pw-work\d0611508[wa-ef-mtbkr2022-1-3_control-sheet.xlsx], indicating this is a technical data file supporting the forest road repair solicitation.