Chandigarh: As a part of river conservation project, the union ministry of environment and forests on Thursday cleared a proposal for laying sewage disposal pipes, and provision of sewage treatment plants in eight more towns of Punjab. These are Hoshiarpur, Phagwara South, Rajpura, Patran, Lehraghaga, Derabassi, Khanuri and Jalandhar. The project will be taken up at a cost of Rs 465.07 crore.