As Marin embarks on a tune-up of its countywide plan—a mammoth planning document that guides policies and programs—the number-one priority is a new stream conservation ordinance for the San Geronimo Valley. “We are glad that they are taking this on as soon as possible, and our hope is that they pass a science-based, common sense stream protection ordinance that gives critically endangered coho salmon a fighting chance at survival and recovery,” said Todd Steiner, the…