Dear Portola Valley,
Do you really need to even look at the environmental ramifications?
Filling in more of the Bay is simply ludicrious. For Cargill and this Arizona Developer to suggest that dedicating 800 acres to recreation space (playing fields) and wetlands in a horse-trade to develop 636 acres of fragile ecosystem to add 12,000 homes (and more people)is not in the best interest of the Peninsula, California, the U.S. or the world. Homes and commercial space, (not to mention schools) will be built in a matter of several years, wetland restoration takes decades to come to fruition. They'll take their profit and run.
If you've read how fragile our delta system is, then you understand how fragile our baylands are, too.
Residents of PV live there because of their appreciation of nature and open space. Our Redwood City baylands, even though privately held by Cargill, need to be preserved and protected in perpetuity.

Am curious, why are Woodside and PV "looking into" the Cargill development?

Is it they just want a bit of money from the deal, and are jealous RWC gets it all?