The ITR report is merely a single data point. As such, it is being considered with the evaluation results of many design, construction and operations considerations. The ITR report only considered a subset of the engineering and geographical issues relevant to tunnel construction activities, as noted by several tunnel construction contractors and tunnel manufacturers, and does not represent detailed conclusions about Central or Eastern Corridor options. Moreover, the ITR expressly did not consider other relevant environmental factors that will be considered through the CEQA process.