An industrial wastewater stream containing 27000 mg/L of total dissolved solids is discharged into the nearby river at a temperature of 35C. In addition to the dissolved solids the wastewater contains 10-3.5 moles/L of sodium bicarbonate and 10-2.8 moles/L of ammonia. What is the pH of the wastewater at the point of discharge? Assume a closed system.