Critical Decision 0: Approval of Mission Need

Approval Date: 6/13/01

Critical Decision 1: Approval of Preliminary Baseline Range

Approval Date: 10/16/02

Project Execution Plan for the Project Engineering and Design Phase

Approval Date: 9/20/02

Acquisition Execution Plan

Approval Date: 10/16/02

Critical Decision 2A: Approval of Long Lead Procurement Budget

Approval Date: 7/2/03

Critical Decision 3A: Approve Start of Long-Lead Procurement

Approval Date: 12/10/05

Authorization by the Office of Science to Negotiate a New Lease for SLAC and Initiate the Construction Phase of the LCLS Project

Approval Date: 3/8/2006

Environmental Assessment for the LCLS Experimental Facility DOE/EA-1426

Approval Date: 2/28/03

Approval date: January 23, 2006

Preliminary Hazard Analysis

Approval Date: October 14, 2005

Approval Date: January 26, 2006