| Report Year: 2009 |
| Lost 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) | 204 | 179 | 191.5 | - | 183.4 | 186.2 | 228.3 | 177.5 | 134.7 | 185.5 | 167.0 | 165.3 |
| Dissolved Organic Carbon (mM) | 1.15 | 0.80 | 0.98 | - | 2.09 | 0.86 | 1.02 | 1.09 | 1.17 | 1.15 | - | - |
| Temperature (oC) | 18.4 | 24.1 | 21.2 | - | 22.9 | 22.0 | 22.7 | 21.5 | 21.4 | 20.0 | 22.7 | 24.1 |
| Specific Conductivity (μS/cm) | 430.0 | 380.0 | 405.00 | - | 423.36 | 421.08 | 453.19 | 449.47 | 428.72 | 426.31 | 426.76 | 492.57 |
| pH | 8.5 | 8.4 | 8.5 | - | 8.4 | 9.1 | 8.5 | 8.6 | 8.6 | 8.4 | 8.3 | 8.6 |
| I (Ionic Strength ?) | 0.0753 | 0.0665 | 0.0709 | - | 0.0741 | 0.0737 | 0.0793 | 0.0787 | 0.0750 | 0.0746 | 0.0747 | 0.0862 |
| Dissolved Inorganic Carbon (mM) | 3.98 | 3.49 | 3.74 | - | 3.57 | 3.31 | 4.41 | 3.40 | 2.60 | 3.62 | 3.26 | 3.16 |
| pCO2 (μatm) | 575 | 570 | 572.4 | - | 563.2 | 109.2 | 811.5 | 352.0 | 303.7 | 621.4 | 875.9 | 371.0 |
| Equilibrium CO2 | 15.39 | 12.99 | 14.19 | - | 13.50 | 13.88 | 13.66 | 14.13 | 14.24 | 14.86 | 13.60 | 13.06 |
| CO2 (μM) | 23.92 | 20.01 | 21.97 | - | 20.39 | 4.00 | 27.62 | 13.13 | 12.08 | 23.65 | 34.01 | 13.72 |
| Δ CO2 from Equilibrium | 8.527 | 7.019 | 7.77 | - | 6.88 | -9.88 | 13.96 | -1.00 | -2.16 | 8.79 | 20.41 | 0.67 |