To promote biological denitrification in their activated sludge system, the operators of the University Area Joint Authority $($UAJA$)$ wastewater treatment plant add methanol as a supplemental carbon source. Using the algorithm presented in class to balance redox reactions, develop the appropriate half$-$reactions and then balance the overall reaction for the oxidation of methanol $(C{H}_{3}OH)$ to $C{O}_2$ coupled to the reduction of nitrate to nitrogen gas. State any assumptions.