The Coronado and Silver Strand shorelines are under advisory again after water bacteria levels exceeded state standards over the weekend as projects to address the Tijuana sewage crisis trudge forward on both sides of the border. In Mexico, a ruptured 42-inch wastewater pipe is expected to be repaired by November. It ruptured last summer, adding to the flow of untreated wastewater from Tijuana into coastal waters and across the U.S.-Mexico border.