This week's Supreme Court decision is the latest development in Walmart's years-long effort to expand its Antioch store into the East Bay's first supercenter.
Here is a timeline:
January 2000 -- Walmart opens 134,000-square-foot store at Lone Tree Way and Hillcrest Avenue.
June 2004 -- Walmart announces intention to expand store by 72,980 square feet and turn it into a 24-hour supercenter. City says it must study traffic and noise effects.
Sept. 20, 2006 -- Planning Commission approves environmental study; appeal is filed.
October 2006 -- City Council hears arguments for and against expansion and delays decision.
February 2007 -- City Council rejects Walmart's plans for 64,980-square-foot expansion.
January 2010 -- Walmart submits new plans to Antioch, calling for 33,575-square-foot expansion and no 24-hour operations; city says it must study environmental effects.
May 2010 -- Planning Commission approves Walmart expansion plans; decision is appealed to City Council.
July 2010 -- City Council rejects Walmart expansion, citing economic concerns.
August 2010 -- Proposal brought back to council after city legal counsel determines that environmental review is not needed for expansion.
Sept. 28, 2010 -- City Council approves Walmart expansion.
October 2010 -- Walmart opponents file lawsuit over city's decision.
Oct. 13, 2011 -- Contra Costa Superior Court sides with Walmart opponents,
January 2012 -- Walmart files appeal with state Court of Appeal.
Nov. 27, 2012 -- Appellate court reverses Contra Costa Superior Court ruling, allowing Walmart expansion to proceed.
January 2013 -- Walmart opponents file petition for review with California Supreme Court.
March 2013 -- State Supreme Court denies review of the Appellate court ruling.