Xxxx Surcharge. With County Project Managers approval, County shall pay a 50% surcharge to the normal unit cost rate for 48 hour analyses reported within that time period. Rush samples reported after the due date will not be eligible for the surcharge and will be subject to the penalties (10% per 48 hour period). With County Project Managers approval, County shall pay a 30% surcharge to the normal unit cost rate for 7 day analyses reported within that time period. Rush samples reported after the due date will not be eligible for the surcharge and will be subject to the penalties (10% per 7 day period).