Hyperion Treatment Plant officials queried over medical waste spill along South Bay beaches

As an investigation continues into September’s massive sewage spill off the South Bay coast, Hyperion Treatment Plant officials Thursday fielded questions from community members and environmentalists concerned that it could happen again. Public health officials believe Hyperion, the city of Los Angeles’ oldest and largest operating waste-water treatment plant, is responsible for the spill that spewed medical debris such as hypodermic needles, condoms and tampon applicators into the ocean and eventually ashore on Sept. 23.