A report yesterday incorrectly identified the driver in an accident on MacArthur Boulevard in Montgomery County. William Thomas Lynch, 34, who was killed in the crash Monday evening, was a passenger in the car. The driver, Glen Echo postmistress Geraldine Olavarrio, 47, also known as Jerral Dean DePaolis, also was killed in the one-car crash.

The Glen Echo postmistress and an employe at a Navy model-testing facility were killed Monday night in a car crash on MacArthur Boulevard, Montgomery County police reported yesterday.

Police said they believe Geraldine Olavarria, 47, who also used the name Jerral Dean DePaolis, and William Thomas Lynch, 34, probably were killed instantly when their car went over a 50-foot embankment about 9:30 p.m., upended, and slammed into a large oak tree that crushed the roof.

The accident was not discovered until 7:20 a.m. yesterday, police said, when a passer-by found the car after noticing bushes and trees had been damaged along the roadside.

Police said Olavarria and Lynch apparently were on their way home from the Veterans of Foreign Wars post near the entrance of Great Falls Park, where both were members, when the crash occurred.

Police believe they were headed south on MacArthur Boulevard, with Lynch driving, when the car went out of control between the Old Angler's Inn and Brickyard Road. Police attributed the accident to speed and driver error.

Police closed a section of the boulevard between 7:30 a.m. and 9:30 a.m. while fire and rescue workers cut the roof off the car and removed the bodies. The car was winched up to the road and removed.

A U.S. Navy spokeswoman said Lynch, of 7816 MacArthur Blvd. in Cabin John, had been employed as a supply and warehouse worker at the David Taylor Research and Development Center since 1972.

Olavarria, who lived at 11 Vassar Cir. in Glen Echo, started working at the small local post office eight years ago and was promoted to postmistress about three years later. Ellen Nash, a post office colleague who was running the office yesterday, said Olavarria was popular in the community. "Everybody in town knew her," she said.