 You're listening to WTOP. WTOP News. Facts matter. 422. Why is the safety of turtles a big concern in the city of Fairfax? Well, it's because a major construction project there is about to get started. Our story from WTOP's Neil Augenstein. Ashby Pond, just off Main Street, is about to be dredged and modernized. It'll take months. One of the first things that will need to be done is drain down the pond so that the accumulated sediment can start to be removed.