While i'm not enthused about cutting down a bunch of trees & disturbing what "nature" is left in this area, you could in theory put a 2 level garage on this site:
http://prntscr.com/3o2fzt" onclick="window.open(this.href);return false;
Maybe you could offset the construction with a planted green roof. Would help with heat island effect, drainage, and cooling in summer.
The other option is to use this property instead:
http://prntscr.com/3o2gpn" onclick="window.open(this.href);return false; That i'm more in favor of...
Finally this spot could be used:
http://prntscr.com/3o2i6z" onclick="window.open(this.href);return false; Not as ideal, as it means crossing a divided road.
They could also build a smaller carpool (2 occupants and over) lot in that green space, with capacity for 50 parking spots?