A veteran Baltimore City police sergeant assigned to a drug enforcement unit was arrested early yesterday by Baltimore County police and charged with driving a city-owned undercover police car while intoxicated. County police said Sgt. Edward Paugh, a 20-year veteran assigned to the Southwestern District drug enforcement unit, was arrested at 2:20 a.m. at North Point Road and Belmont Avenue near the community of Eastwood. County police said officers from the North Point precinct found a disabled vehicle pulled up to the curb with Sergeant Paugh behind the wheel. Other sources said the late-model Honda was a city-owned car used in undercover narcotics investigations. Sgt. Stephen R. Doarnberger, a county police spokesman, said witnesses told investigating officers the Honda was weaving and speeding down the road, narrowly missing several cars before it struck a curb and became disabled. When county officers approached the Honda, they reported a heavy odor of alcohol on Sergeant Paugh's breath. He was taken to the North Point precinct where he was formally charged after refusing a Breathalyzer test. He was released to his superiors. No trial date was set. Baltimore City police spokesman Sam Ringgold said Sergeant Paugh's police powers have been suspended. His gun and badge have been taken and he has been assigned to administrative duties pending his trial. It was the second arrest of a Baltimore City officer in the county this week. On Monday, Officer Andrew Mays, 26, of the Northern District, was charged with second-degree rape in the assault of a 28-year-old female city officer he had once dated. The incident occurred in the woman's home last Thursday. He was suspended without pay and released on $25,000 bond.