dirt cop
n.β Β«The people charged with enforcing state and local erosion and sedimentation laws, affectionately known as the βdirt cops,β say most developers obey the laws and put in the required measures.Β» ββWhatβs killing College Lake?” by Shannon Brennan News & Advance (Lynchburg, Va.) Oct. 2, 2005. (source: Double-Tongued Dictionary)