PBS special covers the Big Dig – and Green Line extensions Post published:October 27, 2008 Post category:Green Line Quoted in the segment is Ellin Reisner, president of STEP. Read more and watch the video. You Might Also Like Transportation commitments public hearing summary December 14, 2004 Green Line letters from legislative delegation September 22, 2011 Somerville Patch: Report on 2nd Route 16 meeting March 31, 2011