Re "Fix the Delta levees" (Letters, Sept. 26): The letter writer states that the 1989 Loma Prieta earthquake was on the Hayward Fault. It was not. It was on a section of the San Andreas Fault down near Santa Cruz, far from the Delta.
An equivalent (or even somewhat smaller) quake on the nearby Hayward Fault, or on the even closer Calaveras Fault, would cause massive damage in the Delta. Marc Reisner's 2003 book, "A Dangerous Place: California's Unsettling Fate", examines and explains this possibility cogently.
-- Kathryn A. Klar, Richmond