| Report Year: 2009 |
| Lake Geode, Henry County |
| Carbon Balance Table |
| Parameter | 6/16/2009 | 7/22/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 117 | 109 | 113.0 | - | 88.5 | 102.7 | 136.3 | 123.7 | 88.5 | 108.8 | 95.0 | 160.7 |
| Dissolved Organic Carbon (mM) | 0.43 | 0.41 | 0.42 | - | 0.51 | 0.54 | 0.45 | 0.46 | 0.75 | 0.62 | - | - |
| Temperature (oC) | 21.8 | 23.0 | 22.4 | - | 26.1 | 23.8 | 25.8 | 24.2 | 25.2 | 28.8 | 23.6 | 24.1 |
| Specific Conductivity (μS/cm) | 330.0 | 300.0 | 315.00 | - | 279.58 | 350.79 | 432.37 | 360.38 | 338.84 | 347.75 | 273.89 | 249.81 |
| pH | 8.4 | 8.6 | 8.5 | - | 9.5 | 8.9 | 8.6 | 8.8 | 8.9 | 8.8 | 8.7 | 8.7 |
| I (Ionic Strength ?) | 0.0578 | 0.0525 | 0.0551 | - | 0.0489 | 0.0614 | 0.0757 | 0.0631 | 0.0593 | 0.0609 | 0.0479 | 0.0437 |
| Dissolved Inorganic Carbon (mM) | 2.30 | 2.10 | 2.20 | - | 1.39 | 1.88 | 2.78 | 2.31 | 1.63 | 2.04 | 1.77 | 3.06 |
| pCO2 (μatm) | 434 | 222 | 328.3 | - | 19.7 | 104.7 | 309.2 | 179.9 | 93.0 | 172.4 | 316.8 | 1064.1 |
| Equilibrium CO2 | 13.89 | 13.42 | 13.66 | - | 12.27 | 13.16 | 12.39 | 12.95 | 12.69 | 11.40 | 13.38 | 13.00 |
| CO2 (μM) | 16.31 | 8.06 | 12.19 | - | 0.68 | 3.67 | 10.55 | 6.23 | 3.33 | 5.48 | 13.19 | 39.73 |
| Δ CO2 from Equilibrium | 2.418 | -5.360 | -1.47 | - | -11.59 | -9.49 | -1.84 | -6.72 | -9.36 | -5.93 | -0.19 | 26.73 |
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