California is again updating the system it uses to decide which polluted communities get cleanup funding. The tool, CalEnviroScreen, has already steered billions of dollars to the state’s most burdened neighborhoods, but critics say it still overlooks some of them. The update is reigniting a long-smoldering debate: officials promise they’re listening to communities more than ever, while advocates say the state’s data gaps leave some areas invisible to the system designed to help them. Officials at the Office of Environmental Health Hazard Assessment, the state agency managing the tool, said they worked with eight community organizations to design this fifth update – including the Environmental Health Coalition, UNIDOS Network and Comite Civico del Valle. The update adds two indicators: diabetes prevalence, because people with diabetes are more vulnerable to air pollution; and small air toxic sites, to track additional risks from sources like urban oil wells and dry cleaners. EnviroScreen also incorporates data improvements among some of the 21 other indicators it uses, such as adding children’s blood lead levels to a risk assessment for …