Had James Slaughter lost his case, his clients would have been in deep — well, the polite term is “biosolids.” Instead, the Beveridge & Diamond partner came through in the clutch, winning an injunction in June that allows the city of Los Angeles to continue recycling its treated sewage sludge in neighboring Kern County.

The case was just one example of how lawyers at Beveridge & Diamond, which boasts it is the nation’s oldest and largest environmental law firm, relish tackling dirty subjects but believe in fighting clean. One opposing counsel, Washington solo practitioner Peter Enslein, called Beveridge & Diamond “highly regarded.…I found their lawyers to be highly professional and skilled litigators.”