By this summer, if her colleagues adopt their favored redistricting plan, Ruth Galanter could end up representing some 246,000 San Fernando Valley residents during her last year in office. The new turf is about seven miles north of her present Westside district.Galanter, one of the three most senior members of the L.A. City Council, would also cease to represent any of the 240,000 or so people living in her current district — many of whom have been her constituents since she was first elected to the 6th District seat more than 14 years ago. Her district now includes Venice, Mar Vista, Playa del Rey, Westchester, LAX, and portions of the Cheviot Hills and Crenshaw areas.“The question is whether this is fair to the people who elected me or, for that matter, to the people [in the proposed] San Fernando Valley 6th District who did not elect me,” Galanter said last week.