Critics of a controversial EPA-backed method for disposing of asbestos-containing building waste without first removing the cancer-causing compound are opposing any agency research into the new method because they say the agency used an unvalidated risk assessment and faulty monitoring to outline the proposed research plan. The critics, including state air regulators, union workers and public health activists, say that in addition to the research flaws, the method may not be cost-effective. The opposition is just the latest setback to...