The project cost around $660 million. The new LRVs began arriving in late September 2011 and began running on the Green Line on October 3, 2011. Additional new LRVs began operation on the Orange line in January 2013. The final phase of the project began July 25, 2013 with a groundbreaking ceremony to kick off the construction to modernize the remaining unrenovated stations on the portion of the Blue Line south of downtown San Diego. The low-floor Siemens S70 trolleys began operation on the Blue Line on January 27, 2015, which coincided with the retirement of the last of the original U2 trolleys. The project, including remaining station and track renovations, was completed in late 2015.