A Superior Court judge today ruled tentatively in favor of the Expo Line Construction Authority in a lawsuit brought by some Westside homeowners that challenged the final environmental study for Phase Two of the project.

Judge Thomas McKnew ruled that the plaintiffs — the group Neighbors for Smart Rail — did not prove that the Construction Authority violated any laws in putting together their environmental document.

Here’s a copy of the ruling, posted on The Transit Coalition’s website. And here’s coverage of the ruling at LA Weekly’s website.

Phase 2 of the Expo Line will run from Culver City to Santa Monica. Phase 1 from downtown Los Angeles to Culver City is currently under construction, with initial service expected to begin in 2011.