| Report Year: 2009 |
| Lacey Keosauqua Park Lake, Van Buren County |
| Carbon Balance Table |
| Parameter | 7/21/2009 | 6/16/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 96 | 97 | 96.5 | - | 97.6 | 122.8 | 112.2 | 126.8 | 76.0 | - | 90.0 | 165.3 |
| Dissolved Organic Carbon (mM) | 0.62 | 0.64 | 0.63 | - | 0.71 | 0.65 | 0.68 | 0.58 | 1.01 | - | - | - |
| Temperature (oC) | 24.1 | 22.5 | 23.3 | - | 26.1 | 25.0 | 28.3 | 24.2 | 27.1 | - | 22.1 | 26.5 |
| Specific Conductivity (μS/cm) | 250.0 | 260.0 | 255.00 | - | 232.19 | 315.20 | 307.37 | 357.26 | 342.59 | - | 219.15 | 317.17 |
| pH | 8.0 | 8.4 | 8.2 | - | 8.0 | 8.3 | 8.7 | 8.3 | 7.1 | - | 8.3 | 8.3 |
| I (Ionic Strength ?) | 0.0438 | 0.0455 | 0.0446 | - | 0.0406 | 0.0552 | 0.0538 | 0.0625 | 0.0600 | - | 0.0384 | 0.0555 |
| Dissolved Inorganic Carbon (mM) | 1.94 | 1.90 | 1.92 | - | 1.96 | 2.41 | 2.11 | 2.49 | 1.68 | - | 1.77 | 3.26 |
| pCO2 (μatm) | 992 | 327 | 659.3 | - | 996.5 | 621.6 | 291.2 | 523.0 | 5051.4 | - | 383.3 | 750.7 |
| Equilibrium CO2 | 12.97 | 13.62 | 13.29 | - | 12.30 | 12.64 | 11.53 | 12.97 | 11.91 | - | 13.91 | 12.13 |
| CO2 (μM) | 34.77 | 12.01 | 23.39 | - | 33.86 | 20.78 | 9.12 | 18.44 | 162.54 | - | 14.31 | 24.89 |
| Δ CO2 from Equilibrium | 21.806 | -1.601 | 10.10 | - | 21.56 | 8.14 | -2.41 | 5.47 | 150.64 | - | 0.40 | 12.76 |