LONG BEACH, Calif. (AP) — There is no sign that a huge sewage spill in downtown Los Angeles reached the ocean 20 miles away, but the waters off Long Beach and parts of neighboring Seal Beach will remain closed at least until another round of tests comes back clean on Thursday. The first sample taken showed no excessive levels of bacteria, Nelson Kerr of the Long Beach health department said Wednesday. "It doesn't look like we're impacted by the spill," Kerr said.