DCA Rwy 1-19
The 10-9 lists the length as 7169'.
10-9A lists 6869' in the takeoff distance box. I distinctly remember the 6869' being previously listed on 10-9.
So, an extra 300'. 150' on each end. EMAS add? I don't recall any runway extension programs at the airport. So, any insight why the length value is different between the two pages?