Four persons charged with selling cocaine to lunch-hour and evening crowds in Georgetown and downtown Washington were released on personal recognizance yesterday during a court hearing.

Those released were Alpha Boulos, 25, the owner of the Puff and Snuff botique in Georgetown Mall; Charles E. Druitt, 23, the manager of a warehouse that supplies merchandise to street vendors; James L. Epstein, Northwest Washington, 28, and Robert R. Sizer, 21, of Takoma Park, both vendors.

Police said the four are part of a ring that sold an estimated $1 million worth of cocaine a year. The vendors allegedly sold the drugs from their stands at five prime locations.

Police said undercover detectives purchased $15,000 worth of cocaine from the ring during a 3 1/2 month investigation.

In addition to the four persons who appeared in D.C. Superior Court yesterday, four others were arrested on drug related charges in connection with the ring. They are Wayne Dressing, 28, of Hyattsville; Sheila Hooper, 24, of Takoma Park; Kathleen M. Pagley, 23, of Arlington; and Stephen J. Eitelson, 23, of Northwest Washington. Dresing and Hooper were charged with distribution of cocaine, while Pagley and Eitelson were charged with possession of cocaine.