Contractor shall guarantee that SOx in treated flue gas will not exceed 427 mg/Nm3. If the plant cannot meet the guarantee value then contractor shall pay to Employer 2 % of contract total price for each 30 mg/Nm3 extra SOx in treated gas as liquidated Damages. ( Please refer to annex 9) It shall be noted that maximum acceptable level of SOx in treated flue gas is 572 mg/Nm3. therefore exceeding SOx from 572 mg/Nm3 cannot be acceptable and is rejected.