(May 29, 2018, 1:50 PM EDT) -- SACRAMENTO, Calif. — Six environmental groups on May 25 sued California’s Delta Stewardship Council, alleging that it ignored a 2016 court ruling and approved amendments to the so-called Delta Plan to facilitate twin tunnels for the state’s WaterFix project (Friends of the River, et al. v. Delta Stewardship Council, et al., No. n/a, Calif. Super., Sacramento Co.)....