As Matang Pagar Reservoir is the largest reservoir in Klang Valley, it is connected to more than half the water supply in Selangor. As part of the Syabas Mitigation Project, we are the appointed coring contractor to make openings of 1000mm x 1000mm (with a thickness of 1.2m) in 24 hours. With the chosen right tools and proper planning, Sonicon is able to deliver the opening in 16 working hours and water supply in Selangor are not interupted during that day!