(AP) — The discovery of new "trace faults" near one of the San Francisco Bay area's largest dams has further stalled a $193 million project to strengthen it, pushing back plans for a seismic retrofit to early 2018. State regulators ordered a few years ago that the vast lake near Morgan Hill could not be filled any more than 68 percent full because geologic tests found the dam could slump and release a wall of water during a major earthquake.