WASHINGTON (AP) _ The Defense Department plans to end or reduce operations at an additional 69 sites in Europe and one in Korea as part of its program to scale down U.S. presence overseas, the Pentagon announced today.

It was the eighth round of reductions in Europe and brings to 628 the number of overseas installations at which operations will be ended, reduced or placed on standby. Of these, 592 are in Europe.

This makes a 38 percent reduction of U.S. overseas installations since January 1990.

Pentagon spokesman Bob Hall said more overseas reductions would be announced later. He said no decision had been made on whether there will be more reductions in the United States.

The European installations affected include one each in Belgium and the Netherlands, three in Turkey, six in Italy, nine in the United Kingdom, and 28 in Germany.

The Pentagon said operations at 21 petroleum tank farms and fuel pumping stations in France would also be ended.

Altogether, the realignment will affect more than 5,000 military personnel, 450 U.S. civilian employees and 2,300 local nationals. Since the drawdown began, more than 90,000 personnel authorizations have been eliminated.

Hall said military personnel affected, as well as some of the U.S. civilians, would be reassigned elsewhere abroad or in the United States. He said most of the local nationals would be terminated.

Large sites in Europe affected by the announcement include Dolan Barracks, Camp Pieri and Dragoner Kaserne in Germany, which are being returned to those countries.

Other significant sites being partially returned include facilities in the Ankara, Turkey, area, leased facilities in the Izmir area of Turkey and Finthen Airfield in Germany.

U.S. forces in Korea will end operations at Camp Isbell, a small installation in Seoul. The announcements bring to 21 the number of U.S. facilities in Korea that have ended or reduced operations or are scheduled for return.

In London, the Ministry of Defense said U.S. military forces would leave five bases in Britain in September 1993, affecting nearly 200 British jobs. The most significant of the closures is the High Wycombe Air Station in Buckinghamshire, west of London, a U.S. military administrative center which includes a high school and bank for military personnel and their families.