The Chevy Chase Association of Retailers Inc. is finally up and running after months of organization.

Some key upcoming events for the retail area: the opening of the Chevy Chase Pavilion on Wisconsin Avenue NW in October, with Washington's first Barneys New York clothing store; the renovations at area powerhouses, such as Mazza Gallerie, Woodward & Lothrop and Saks Fifth Avenue; and the growth of specialty stores, ranging from Alain Chetrit's planned addition of the area's first Zegna, an Italian menswear store, to his avant-garde collection of clothing stores -- Hugo Boss, Silhouette and Byblos.

The group is part of an aggressive push by the Chevy Chase merchants to compete with Virginia's Tysons Corner and Maryland's mega-malls -- White Flint and Montgomery Mall, which is getting a face lift and a new Nordstrom branch.

The competition has made Chevy Chase merchants more eager to cooperate with those in their immediate area to attract shoppers, especially from the neighborhood.

Some ideas being kicked around: more communal parking, coordination on store opening and closing times, and multicolored flags on lampposts to identify the area.

The group has formed committees dealing with membership, public relations, Christmas 1990, transportation and community relations.