For the following condition, determine the minimum Stage 1 TOC removal requirement in percent. Alkalinity \begin{tabular}{|c|c|c|} \hline RawTOC(mg/L) & Alkalinity(mg/LasCaCO3) & UVA (cm1) \\ \hline 2.8 & 50 & 0.085 \\ \hline \end{tabular}