AutoCAD Civil 3D :: Export Point Coordinates And Elevations Along Sample Line

I'm working on a stream restoration project and we need to determine the x coordinates and corresponding elevations along a stream alignment at certain sample lines.  The centerline of the stream's alignment has been created as well as sample lines for cross sections at 50' intervals. We need the coordinates & elevations of each sample line (cross section) exported into an excel/txt document.

For instance, at station 1+00 of the alignment  we have a sample line.  We need to know to the right and left along that sample line the corresponding elevations and that x coordinate) from the alignment.  Primarily, whole contour intervals but more information would be useful as well.  I was hoping this could be automatically generated.