Swimming in Philly

Brian Stack started a thread a few months ago about where to swim in Philadelphia: forums.usms.org/showthread.php There's lots of good info there, so using that as a starting point, any suggestions on where I might swim? I'll be in town for a few days later this month for work. I'll be staying near the airport and working at the Boeing plant. After work would probably be best. I will have a car. My typical workouts are around 5,000 yards and I hold around 1:015-1:10/100 pace (SCY) just to give you an idea.