Ald. Jason Ervin (28) on Tuesday defended a proposal to create a new Special Service Area in West Garfield Park.

A West Side business group is crying foul over what it calls political favoritism in a city-backed plan to create a new special taxing district in West Garfield Park, saying the city’s planning department and the local alderman unfairly tanked the group’s bid to manage the district themselves. But city planners and Ald. Jason Ervin (28) hold that the right group won out.