The odd-even gasoline plan that went into effect last June in the Washington metropolitan area will end Sunday at midnight.

All three jurisdictions will continue to impose $5 minimum purchase requirements as an attempt to discourage motorists from "topping-off" their tanks, a situation officials said contributed to long lines during the critical summer gasoline shortage.

"I don't think the plan is needed anymore," said Stanton Willoughby owner of Willoughby's Exxon Service station at 4244 Wisconsin Ave. NW. "A lot of stations have been ignoring the plan because more gasoline is available and people are conserving."

"Our joint action is a continuation of the cooperation that has resulted from an agreement signed last March providing for coordinated fuel distribution plans in the Washington area," said Virginia Gov. John Dalton, who issued an executive order in Virginia to end the plan in the Commonwealth.

Maryland Gov. Harry Hughes said, "Gasoline supplies, while still tight and below levels that were available a year ago, appear to be adequate, provided there is no drastic change in driving patterns and gasoline consumption."

A spokesman for District of Columbia Mayor Marion S. Barry said: "We're still encouraging conservation. We don't want people to think the gasoline crisis is over."