GANDHINAGAR: Four years after it was launched, the state government has got a "post-feasibility study" of the controversial Sujalam Sufalam project prepared to silence its critics. Prepared jointly by the Institute of Social and Economic Change (ISEC), Bangalore and Water Resources Engineering and Management Institute (WREMI), Vadodara, it comes even as a Planning Commission document on the 11th Five-Year Plan (2007-12) refuses to include it in the list of projects it has approved.