Leaking Arco tank in Modesto part of state lawsuit Underground gasoline tanks at more than 780 Arco stations throughout California, including some in Stanislaus and Merced counties, could harm the environment, state and local prosecutors charge in a civil lawsuit against oil company BP. In some cases, operators disabled leak detection devices, didn't fix leaks, failed to test overspill systems and improperly disposed of hazardous waste in ... [News Source]