| Report Year: 2009 |
| Nine Eagles Lake, Decatur County |
| Carbon Balance Table |
| Parameter | 6/17/2009 | 7/22/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 98 | 102 | 100.0 | - | 133.9 | 89.7 | 89.8 | 98.0 | 68.7 | 102.2 | 103.7 | 157.0 |
| Dissolved Organic Carbon (mM) | 0.56 | 0.52 | 0.54 | - | 0.67 | 0.52 | 0.62 | 0.47 | 0.80 | 0.92 | - | - |
| Temperature (oC) | 23.5 | 23.6 | 23.5 | - | 25.2 | 24.5 | 24.6 | 25.3 | 25.1 | 26.3 | 25.0 | 24.8 |
| Specific Conductivity (μS/cm) | 200.0 | 210.0 | 205.00 | - | 193.43 | 193.41 | 187.86 | 206.64 | 214.92 | 398.81 | 218.69 | 229.17 |
| pH | 8.3 | 7.9 | 8.1 | - | 8.0 | 8.4 | 8.4 | 8.1 | 7.5 | 8.0 | 8.2 | 8.3 |
| I (Ionic Strength ?) | 0.0350 | 0.0368 | 0.0359 | - | 0.0339 | 0.0338 | 0.0329 | 0.0362 | 0.0375 | 0.0843 | 0.0383 | 0.0389 |
| Dissolved Inorganic Carbon (mM) | 1.94 | 2.07 | 2.01 | - | 2.69 | 1.76 | 1.75 | 1.96 | 1.42 | 2.04 | 2.06 | 3.12 |
| pCO2 (μatm) | 495 | 1256 | 875.8 | - | 1379.4 | 546.8 | 347.2 | 800.7 | 1849.6 | 817.0 | 715.4 | 864.6 |
| Equilibrium CO2 | 13.20 | 13.18 | 13.19 | - | 12.65 | 12.84 | 12.96 | 12.53 | 13.37 | 11.83 | 12.90 | 12.89 |
| CO2 (μM) | 17.68 | 44.75 | 31.22 | - | 46.95 | 18.20 | 12.84 | 27.01 | 65.76 | 26.20 | 26.75 | 30.09 |
| Δ CO2 from Equilibrium | 4.473 | 31.573 | 18.02 | - | 34.30 | 5.36 | -0.12 | 14.49 | 52.39 | 14.37 | 13.85 | 17.20 |