 The Rockies Express Pipeline filed an application to construct and operate this section on 30 April 2007 and the FERC issued approval on 30 May 2008.In June 2014, REX placed the Seneca Lateral into initial service and in January 2015, the Seneca Lateral was placed into full service with the ability to move approximately onto the REX mainline in Zone 3.On August 1, 2015, REX placed its Zone 3 East-to-West Project into service, making Zone 3 of the mainline fully bi-directional with the ability to move approximately of Appalachian production to Midcontinent markets.