The New York Times reported Sunday that demolishing a house in the Spring Valley neighborhood may unearth a key stockpile of old chemical weapons that have created a lingering health risk in the neighborhood.

Today’s Post leads with a report on the long-term effects of World War I-era chemical weapons testing conducted in an upscale part of Northwest D.C.

UPDATE (11:45 a.m.): Federal investigators are now raiding eight other buildings in the District and Virginia in connection with the bribery claims. The names of the the four arrested had not yet been released, though Machen will hold a press conference this afternoon to identify them and the complete slate of charges.

The Castle Gatehouse is one of those mysterious buildings that few know about and those that do wonder about. How curious, a castle-like building on the Georgetown Reservoir, near the Capital Crescent Trail.

Mayor Fenty’s office sent out a press release on Wednesday to announce that the District will spend $2.5 million to improve the 17th Street levee. As you may recall, the Federal Emergency Management Agency proposed new flood maps in January to include an area in Southwest Washington from the Lincoln Memorial to Fort McNair. The change would have required many private property owners to purchase mandatory flood insurance, but FEMA recently agreed to delay implementation…