BAY RIDGE - Residents say a new multimillion-dollar facility has yet to improve odor problems at a Bay Ridge wastewater plant. After a $50 million upgrade, the city?s Department of Environmental Protection says a pair of carbon filters are reducing hydrogen sulfide emissions by 90 percent. The chemicals have leaked from the plant since it came to the area more than 50 years ago. However, some residents say the smell has not gotten better, and, at nearby Owls Head Park, the air is still littered with pollution. State Sen. Martin Golden (R-22nd District) says more work needs to be done. "This is not a solution," he says. The plant is one of 14 throughout the five boroughs and takes in nearly 10 percent of the city's waste.