Respondent is required to monitor the System's water annually for nitrate. 40 C.F.R.
§ 141.23( d). On January 16, 2012, the Respondent collected a sample for inorganic contaminant
analysis, however the sample was only analyzed for nitrite. Since a second sample was not collected
for proper analysis for nitrate, Respondent failed to monitor the System's water for nitrate during 2012,
and, therefore, violated this requirement