Atlantic Richfield Co. [part of BP] is among five companies fighting a public-nuisance lawsuit in state court seeking $900 million to replace or contain lead paint in millions of California homes. In a trial…before Superior Court Judge James Kleinberg in San Jose, 10 California cities and counties…aim to break the companies’ streak of victories in similar suits in seven different states…In addition to Los Angeles-based Atlantic Richfield, the defendants are…Sherwin-Williams Co.;…NL Industries Inc.; ConAgra Grocery Products…; and…DuPont Co. The companies argue that decisions in states including New York, New Jersey and Wisconsin demonstrate that the California public-nuisance suit is “without factual or legal merit,” according to [a]…spokeswoman for the companies