According to the slope Embankment Failure at Sta.110+340 to Sta.110+400 Lt., CSC recommend Contractor to repair the slope of Embankment failure by following method as shown in the attached w-section drawing. The bearing capacity for subgrade to support backfill material shall be tested for more than 30 ton/sq.m. And the backfill material shall be compacted more than 95% conform to DOH Standard T107/2517., which CBR > 4%.