The planned sewer pipeline comprises trunk sewers， branch sewers and piping networks. The trunk sewers with diameters from 300mm to 800mm have the total length about 2,631m. The branch sewers with diameters from 300mm to 500mm have the total length about 5,854m. The piping networks with diameters of 300mm have the total length about 3,159m. The sewers are constructed using pipe jacking or micro tunneling.