The concentration of nitrate did not change significantlyfrom upstream to downstream (p = 0.425). The highest measuredNO3−–N value was 3.23 mol/L on April 8, and the lowest valueswere recorded in March (0.53 mol/L upstream and no detectableNO3−–N downstream). NO2−–N concentration also showed no sig-nificant change as water passed through the facility (p = 0.207). Thehighest measured value of NO2−–N was 0.22 mol/L and the lowestmeasured value was 0.06 mol/L.