after the project is completed, trees must be planted and grass grown on the earth-fetching area, excavated land surface and the exposed land surface for the disposition of waste sand, rock and earth, in order to prevent soil erosion.

• 工程竣工后，取土场、开挖面和废弃的砂、石、土存放地的裸露土地，必须植树种草，防止水土流失。