For a message that warned of potential catastrophe, the tone was unfailingly polite. “Dear Ms. Nguyen,” wrote Timothy McCrink and Janis Hernandez, both researchers at the California Geological Survey. “This letter conveys comments from CGS regarding geologic and seismic conditions affecting the site.” The site in question was the proposed Hollywood Center, a high-rise mixed use development that has triggered a bitter, protracted debate over its location along a possibly active earthquake fault line. The