Gas Sweetening Unit (GSU) Of Capacity 0.5 MMMSCMD for Removing the Carbon Dioxide Component from the Natural Gas for Gas Sequestration at Dandewala Gas Processing Complex on LSTK Basis Through EPC Mode of Execution in a Period of 20 Months with an Operation & Maintenance (O&M) of the plant for a Period of Two Years and Provision of Extension by Another One Year.