Perkins design

I am moving along with the design concept for the Perkins Road underpass.  The central feature will be a constructed wetland that treats the stormwater from I-10 and releases into a series of reflecting pools.  I am still working out the details, but it looks like the wetland has to be approxinately 7% of its watershed. So roughly 10,000 sq ft. if the treating the water along the length of I-10 from where the on-ramp crosses under it, to where I-10 meets back to grade by Duvic’s.  I think this is a reseaonable figure.  I would like to incorporate dichroic glass that changes color depending upon the angle of view, as well as to somehow bring what’s going on above (the traffic) back to the ground level. I haven’t figured that one out yet, we shall see.