As outlined in the Chino Champion article from January 28, 2017, the City of Industry is being asked to provide detailed plans about its intents with the Tres Hermanos property.  The City of Industry has made an offer to the Successor Agency of its own Redevelopment Agency–dissolved years ago by state mandate.  The City of Manager for Industry stated, as did the Mayor, it would leave the land as open space to benefit the region.  Plans have circulated for years that there are ideas to scrape the canyon clean of all vegetation and put in multiple reservoirs.  Time will tell what will be required of them and what the City’s plans actually are.
Check out the Chino Champion article.