Over the protests of about 100 residents, the Snellville City Council on Monday approved zoning modifications that would allow for construction of a Walmart Neighborhood Market store.

By a 4-2 vote, the council supported plans for a new 40,600-square-foot grocery store to be located at 2912 W. Main Street. The smaller-format grocery  store and another in Marietta are slated to open in the fall of 2012; they would be the first of their kind in metro Atlanta.

A group of residents have retained an attorney and threatened to file a lawsuit against the city, claiming that the increased traffic, noise and lighting could harm property values for homes in the area.