Chemical Data for Great Run at Route 15 (Station M-5)
| Cycle | Air Temp (°F) | Water Temp (°F) | pH | DO Test 1 | DO Test 2 | Fecal Coliform | Nitrate (mg/L) | Nitrite (mg/L) | Total Phosphorus | Total Kjeldahl Nitrogen | Total Suspended Solids | Volatile Suspended Solids | Fixed Suspended Solids |
| Spring 02 |
73 |
64 |
6.8 |
9.7 |
9.3 |
300 |
0.38 | 0.03 | 0.1 ppm | 1 mg/L | 5 mg/L | <3 mg/L | 4 mg/L |
| Summer 02 | 80 | 75 | 7.0 | 7.3 | 7.4 | 400 | 0.05 | n/d | n/d | 0.6 mg/L | 7 mg/L | n/d | 6 mg/L |
| Winter 03 | 54 | 46 | 6.5 | 12.7 | 13.1 | 200 | 0.98 | <0.01 | <0.1 ppm | 0.3 mg/L | 4 mg/L | <3 mg/L | 3 mg/L |