An article from Sunday's Post, "The Nats' New Home: A Field of Green" (available today either via time travel or their web site) reports that environmental groups "such as the Sierra Club and the Natural Resources Defense Council say the city is failing to ensure the ballpark near South Capitol Street and the Navy Yard is consistent with their long-standing efforts to cleanup the polluted river." The DCSEC says it is compling with the requirements set for by the city council by filtering run-off water to purge it of field fertilizer and cleaning chemicals, incorporating recycled materials, and shutting it down to minimum operating standards in the off-season to save energy. But the groups are demanding many improvements, including "green roofs with vegetation designed to conserve energy and capture storm water runoff; a water treatment procedure that would remove organics such as food before discharging overflow into the river; and permeable pavement that absorbs more water." Taking legal action has not been ruled out. (This stadium project may turn out to be quite a driver of employment for lawyers.)