I am trying to edit a bunch of intersecting 3D planar polygons so that I get the minimum surface between all of the intersecting planes. I cannot for the life of me figure out how to make it work. Is there any advice or training I can take to get this job done. Below is an image of two of the many planar features that I need to edit. The blue planes intersect the green planes at the left of the image. The intersecting blue plane above the green plane needs to be deleted.

I have tried 3d editing in ArcScene using INTERSECT (both with polygons and multipatches)...this doesn't seem to work. I have tried using Union to try to split the polygons at intersections...this has not worked. I am not sure where to go after trying these methods.
Any advice out there?