If the total amount of gas produced from one $kg$ of RBW is equal to $600L,$ what is the peak rate of gas production which occurs at the end of the second year that gas is produced? Time period of total decomposition of RBW is $5$ year. Assume the yearly rate of decomposition for RBW is based on a triangular gas production model. Also determine the amount of gas produced during the first year that gas is produced.