According to the legal brief:
“This case challenges the May 22 2017 approval of the Richardson Grove Operational Improvement Project (“Project”) by the California Department of Transportation (“Caltrans”), and its accompanying certification of a 2010 Environmental Impact Report (“EIR”) and approval of a 2017 Addendum. Intent upon allowing large trucks through the Richardson Grove State Park, Caltrans continues to pursue its realignment of State Highway 101 within the State Park, placing at risk the destruction of California’s most irreplaceable public resources: ancient redwoods and the habitat they provide. Caltrans refuses to satisfy its legal obligation to adequately disclose and evaluate the Project’s environmental effects on these resources – effects which threaten the loss of these scarce resources and directly impact the Park.
This case follows a successful 2010 action challenging Caltrans’ initial approval of its project to alter the road to allow the big trucks. In response to that action, in 2014 Caltrans set aside its approvals, and then in May 2017, without notice, or invitation to review, approved the Project, relying almost entirely on its invalidated 2010 EIR and an improperly approved addendum. At issue now is Caltrans’ failure to comply with CEQA in its certification and use of the 2010 EIR and approval of its 2017 Addendum.”