http://www.kqed.org/.stream/anon/radio/quest/2008/02/2008-02-22-quest.mp3
Last month, a Mill Valley wastewater treatment plant dumped five million gallons of sewage into the San Francisco Bay. The real shocker: Sewage spills happen all the time, even in the eco-conscious Bay Area. Much of the blame lies beneath our feet, in a deteriorating network of clay pipes, some of which date back to the Gold Rush. QUEST investigates.