Independence National Historical Park in Washington Square, National Park Service


Philadelphia, PA

$29K detailed topographic survey of a historical site containing the tomb of the Unknown Revolutionary War Soldier in downtown Philadelphia; data was collected by conventional data collection method from GPS site control to PA South NAD-83/2007 and NAVD 88. Included research of NPS records for utility data, detailed utility survey of the 7-acre site and coordination with the 2nd District of the Philadelphia Register's Office for vertical datum data.