Lyons Avenue/Dockweiler Drive Extension Project

Lyons Avenue/Dockweiler Drive Extension Project

This is an Addendum to the previously certified (April 10, 2018) Environmental Impact Report for the Lyons Avenue and Dockweiler Drive Extension Project. The Modified Project includes: a roundabout at 12th Street and Arch Street and signalized “T” intersection at Dockweiler Drive and Placerita Canyon Road; Railroad Avenue median modifications and dedicated right-turn pedestrian refuge island from 13th Street to Railroad Avenue; a Class I bicycle and pedestrian pathway and bridge south of Dockweiler Drive, spanning Newhall Creek and connecting to the Jan Heidt (Newhall) Metrolink Station and Newhall Community Center parking lot; two basins to capture and treat stormwater; one interim detention basin and conveyance located on the north side of 13th Street and east of the railroad tracks and one infiltration basin located south of the improvements at Placerita Canyon Road; Union Pacific and Metrolink Railroad reprofiling approximately a quarter-mile of the railroad line and grading improvements; property acquisition and/or easements of up to 29 properties (10 more than the 19 identified in the EIR); removal of two additional oak trees (four total) and encroachment on eight oak trees; a larger grading footprint of approximately seven acres (two acres more than the five acres identified in the EIR) on the northern portion of the project site to accommodate roadway and intersection improvements, grading improvements along the railroad line, the two stormwater basins; and a longer grading period of up to 18 months (12 months were identified in the EIR).

Santa Clarita

Los Angeles

Citywide

California Air Resources Board (ARB), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 7 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Coastal Conservancy (SCC)

Transportation:Local Road (Improvements to and extension of Dockweiler Drive )

Site Plan, Addendum to EIR

Aesthetics, Air Quality, Biological Resources, Cultural Resources, Energy, Geology/Soils, Hydrology/Water Quality, Land Use/Planning, Noise, Transportation, Tribal Cultural Resources, Wildfire