| Report Year: 2009 |
| Five Island Lake, Palo Alto County |
| Carbon Balance Table |
| Parameter | 6/4/2009 | 7/8/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 173 | 161 | 167.0 | - | 173.0 | 189.7 | 183.2 | 139.5 | 125.8 | 163.2 | 135.3 | 179.7 |
| Dissolved Organic Carbon (mM) | 0.81 | 0.58 | 0.70 | - | 1.68 | 0.49 | 0.56 | 1.93 | 1.02 | 1.18 | - | - |
| Temperature (oC) | 18.5 | 23.8 | 21.2 | - | 23.7 | 24.2 | 24.6 | 22.6 | 21.9 | 23.3 | 23.2 | 24.8 |
| Specific Conductivity (μS/cm) | 430.0 | 450.0 | 440.00 | - | 464.73 | 498.78 | 478.19 | 452.02 | 470.71 | 476.55 | 444.34 | 418.77 |
| pH | 8.5 | 8.1 | 8.3 | - | 8.0 | 8.6 | 8.7 | 8.7 | 8.9 | 8.1 | 8.6 | 8.5 |
| I (Ionic Strength ?) | 0.0753 | 0.0788 | 0.0770 | - | 0.0813 | 0.0873 | 0.0837 | 0.0791 | 0.0824 | 0.0879 | 0.0778 | 0.0733 |
| Dissolved Inorganic Carbon (mM) | 3.37 | 3.20 | 3.29 | - | 3.46 | 3.63 | 3.48 | 2.66 | 2.34 | 3.36 | 2.58 | 3.43 |
| pCO2 (μatm) | 442 | 1035 | 738.9 | - | 1439.6 | 398.8 | 420.4 | 245.6 | 138.7 | 1300.8 | 342.8 | 571.5 |
| Equilibrium CO2 | 15.33 | 13.08 | 14.21 | - | 13.17 | 12.97 | 13.00 | 13.74 | 14.04 | 13.03 | 13.38 | 13.41 |
| CO2 (μM) | 18.33 | 36.60 | 27.47 | - | 51.96 | 13.86 | 16.32 | 9.29 | 5.37 | 47.10 | 13.02 | 21.56 |
| Δ CO2 from Equilibrium | 3.000 | 23.521 | 13.26 | - | 38.79 | 0.89 | 3.31 | -4.45 | -8.68 | 34.08 | -0.37 | 8.15 |