| Report Year: 2009 |
| Little Wall Lake, Hamilton County |
| Carbon Balance Table |
| Parameter | 6/25/2009 | 7/30/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 175 | 160 | 167.5 | - | 217.4 | 200.5 | 181.3 | 163.1 | 131.5 | 184.0 | 165.3 | 188.3 |
| Dissolved Organic Carbon (mM) | 1.21 | 1.21 | 1.21 | - | 1.27 | 1.82 | 2.31 | 1.91 | 1.95 | 2.61 | - | - |
| Temperature (oC) | 27.9 | 24.1 | 26.0 | - | 24.7 | 23.5 | 26.2 | 23.3 | 22.8 | 24.5 | 23.8 | 25.0 |
| Specific Conductivity (μS/cm) | 430.0 | 450.0 | 440.00 | - | 517.45 | 516.37 | 507.32 | 447.20 | 463.46 | 634.55 | 418.65 | 446.59 |
| pH | 8.5 | 8.7 | 8.6 | - | 8.4 | 8.7 | 7.8 | 8.3 | 9.3 | 7.0 | 8.1 | 9.1 |
| I (Ionic Strength ?) | 0.0753 | 0.0788 | 0.0770 | - | 0.0906 | 0.0904 | 0.0888 | 0.0783 | 0.0811 | 0.1110 | 0.0733 | 0.0782 |
| Dissolved Inorganic Carbon (mM) | 3.38 | 3.04 | 3.21 | - | 4.23 | 3.81 | 3.82 | 3.17 | 2.17 | 4.46 | 3.33 | 3.36 |
| pCO2 (μatm) | 465 | 269 | 367.1 | - | 757.2 | 366.5 | 7313.3 | 1143.8 | 39.9 | 22764.0 | 4151.0 | 117.7 |
| Equilibrium CO2 | 11.64 | 12.97 | 12.31 | - | 12.79 | 13.33 | 12.25 | 13.29 | 13.54 | 12.84 | 13.40 | 12.65 |
| CO2 (μM) | 14.63 | 9.44 | 12.03 | - | 26.08 | 13.48 | 253.55 | 40.45 | 1.41 | 788.69 | 125.79 | 4.01 |
| Δ CO2 from Equilibrium | 2.986 | -3.534 | -0.27 | - | 13.29 | 0.15 | 241.31 | 27.16 | -12.13 | 775.85 | 112.39 | -8.63 |