Pasadena, Texas, is not built like a typical suburb. Most cities have industrial zones on the outskirts, separated from residential areas by distance and design. Pasadena does not have that buffer. It is situated alongside the Houston Ship Channel, which is home to one of the largest petrochemical complexes on earth, and its streets and highways are shared daily by family sedans, school commuters, and 80,000-pound tanker trucks hauling hazardous…