What is the top altitude of the class delta KEDC? It looks like it's not depicted on the VFR sectional chart
This looks odd to me.  

The supplement (3 Jan 2019) does indicate class D operations:


  AIRSPACE: CLASS D svc 1200–0400Z‡ other times CLASS E.


But the current (August 2018) Airspace Designations and Reporting Points doesn't list class D airspace for it, only class E.  This matches the sectional shown.

When I look at another part-time airport (like Drake Field/FYV), the airspace is listed both as class D and class E as expected, and the height of the class D is given.

Perhaps something needs to be updated?

UPDATE
Yes, looks like the control tower opened at KEDC Feb 2018.  It should eventually be charted.  Until then, NOTAMS...


  KEDC NOTAM:
  
  !EDC 01/001 EDC AIRSPACE CLASS G SFC AREA CHANGED TO CLASS
  D 1901031200-PERM


And the update section of the supplement.


  8 Nov 2018 No Major Changes.
  
  3 Jan 2019 Add AUSTIN, TX Class D: That airspace extending upward from the
  surface to and including 3,000 feet MSL within a 4.1-mile radius of
  Austin Executive Airport, excluding the Austin Class C airspace. This
  Class D airspace area is effective during the specific dates and times
  established in advance by a Notice to Airmen. Revise AUSTIN, TX Class
  E: That airspace extending upward from 700 feet above the surface
  within a 14-mile radius of 30º17´55″ N, 97º42´06″W ....


I don't know why the airspace change is marked as Jan 2019 when the tower opened in Feb.