The report contends that cleanup plans are further complicated because Sunoco Inc., the refinery's previous owner, still responsible for legacy environmental liabilities, failed to adequately involve the public in devising the plans. Simeone said the lack of public involvement "raises serious legal questions" about the validity of the approvals granted by state and federal regulators. The site is divided into 11 areas, with plans reviewed and approved for eight of the areas over the last decade. Approvals are pending for the remaining three.