SpaceX is moving ahead with expansion plans at Vandenberg Space Force Base that will double its West Coast launch cadence and enable Falcon Heavy rockets to fly from California.

Last week, the Department of the Air Force issued its Draft Environmental Impact Statement (EIS), which considers proposed modifications from SpaceX to Space Launch Complex 6 (SLC-6) at Vandenberg.

At the heart of the request are three key items:

• Modifying the pad to support the launches of both Falcon 9 and Falcon Heavy rockets
• Constructing two new landing pads adjacent to SLC-6
• Increasing SpaceX’s permitted launch cadence from Vandenberg from 50 launches to 100