| Report Year: 2009 |
| Lake Wapello, Davis County |
| Carbon Balance Table |
| Parameter | 7/21/2009 | 6/17/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 84 | 79 | 81.5 | - | 92.0 | 100.4 | 89.7 | 80.5 | 59.7 | 90.5 | 73.0 | 131.3 |
| Dissolved Organic Carbon (mM) | 0.62 | 0.64 | 0.63 | - | 0.68 | 0.56 | 0.66 | 0.46 | 0.76 | 0.96 | - | - |
| Temperature (oC) | 24.2 | 23.6 | 23.9 | - | 26.6 | 25.4 | 27.9 | 23.9 | 24.8 | 26.0 | 24.1 | 26.1 |
| Specific Conductivity (μS/cm) | 220.0 | 220.0 | 220.00 | - | 205.23 | 238.81 | 209.84 | 228.42 | 222.18 | 349.93 | 187.88 | 212.01 |
| pH | 7.8 | 7.8 | 7.8 | - | 8.1 | 8.5 | 8.6 | 8.2 | 8.2 | 8.2 | 8.8 | 8.6 |
| I (Ionic Strength ?) | 0.0385 | 0.0385 | 0.0385 | - | 0.0359 | 0.0418 | 0.0367 | 0.0400 | 0.0387 | 0.0720 | 0.0329 | 0.0371 |
| Dissolved Inorganic Carbon (mM) | 1.72 | 1.61 | 1.66 | - | 1.83 | 1.94 | 1.39 | 1.60 | 1.21 | 1.76 | 1.34 | 2.56 |
| pCO2 (μatm) | 1398 | 1196 | 1297.2 | - | 1834.1 | 332.2 | 103.2 | 630.7 | 421.7 | 465.5 | 250.2 | 475.8 |
| Equilibrium CO2 | 12.93 | 13.16 | 13.04 | - | 12.13 | 12.50 | 11.62 | 13.10 | 13.44 | 12.03 | 13.19 | 12.27 |
| CO2 (μM) | 48.85 | 42.54 | 45.69 | - | 64.79 | 11.13 | 3.26 | 22.89 | 14.41 | 15.12 | 10.53 | 16.50 |
| Δ CO2 from Equilibrium | 35.921 | 29.382 | 32.65 | - | 52.65 | -1.37 | -8.36 | 9.79 | 0.97 | 3.09 | -2.66 | 4.22 |