In an abandoned corner of City Hall that formerly housed the planning department, four auditors are digging for information about the city’s rules and finances. Jorge Oseguera, the new city auditor, has narrowed down the top four areas of municipal government he will investigate first: the city’s health benefits, citywide policies, revenue collections and the vehicle fleet. In addition to those audits, he has four more in the hopper. The next set of audits will cover the city’s 311 information center, purchase cards, fire inspection fees and the city’s sidewalk repair process. The City Council gave Oseguera permission to move ahead with the audits in June. Oseguera said his goal is to