Columbia, Louisiana
Lat: 32.06.538 N
Long: 92.04.365 W
Site #3 - Samples were taken from the Columbia Bridge which has easy access via a walkway. The Columbia site indicated a higher nitrate/nitrite sample rate than either Monroe or Sterlington. This preliminary reading will dictate further sampling between Monroe and Columbia.

Results
| Date | Time | pH | Dissolved Oxygen |
Ammonia | Nitrates/Nitrites | Sulfates |
| 2/12/05 | 12:45 PM | 7.2 | 8.8 ppm | 1.35 ppm | 135.0 ppm | 13 ppm |
| 3/13/05 | 11:30 AM | 6.9 | 8.4 ppm | 1.65 ppm | 0.204 ppm | 14 ppm |
| 4/17/05 | 11:45 AM | 6.8 | 8.6 ppm | 0.92 ppm | 0.52 ppm | 13 ppm |
Excel Spread Sheets (Raw Data)
1. Nitrates/Nitrites
2. Phosphates
3. Comparison
Historical/Graphical Data





