KHLCNT project: Maintenance and repair of Day dike embankment, Cong Hoa hamlet, Lai Tao village, Bot Xuyen commune; Embankment on both sides of the discharge channel downstream of the 3-port culvert of Xuy Xa pumping station; Dike surface of area 700, Quan Mai section, Duc Duong village, An Phu commune and repair and hardening of Quan Son lake dyke surface (section K6+626 to K9+500)