SMC’s river cleanup initiative has returned to Tullahan River to restore its depth and carrying capacity for floodwater. SMC’s river cleanup initiative has returned to Tullahan River to restore its depth and carrying capacity for floodwater. 305 SHARES Share TweetTHREE years after it completed the P1-billion effort, San Miguel Corp. (SMC) announced that it is now restarting the cleanup of the Tullahan River. According to SMC Chairman Ramon S. Ang, the return to Tullahan reflects the company’s long-term commitment to mitigating flooding through river cleanups. SMC Chairman Ramon S. Ang said the return to Tullahan reflects the company’s long-term commitment to mitigating flooding through river cleanups.