| Report Year: 2009 |
| Green Castle Lake, Marshall County |
| Carbon Balance Table |
| Parameter | 6/15/2009 | 7/20/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 188 | 163 | 175.5 | - | 119.6 | 125.2 | 136.2 | 105.6 | 94.7 | 137.0 | 149.5 | 175.7 |
| Dissolved Organic Carbon (mM) | 0.27 | 0.29 | 0.28 | - | 0.31 | 0.37 | 0.25 | 0.28 | 0.77 | 0.80 | - | - |
| Temperature (oC) | 21.7 | 22.4 | 22.0 | - | 26.5 | 24.4 | 24.2 | 22.2 | 24.3 | 25.9 | 23.3 | 25.8 |
| Specific Conductivity (μS/cm) | 430.0 | 380.0 | 405.00 | - | 290.14 | 314.23 | 310.81 | 294.14 | 337.37 | 374.77 | 353.59 | 304.35 |
| pH | 8.4 | 8.5 | 8.4 | - | 9.1 | 8.8 | 9.3 | 8.9 | 8.4 | 8.4 | 8.1 | 8.9 |
| I (Ionic Strength ?) | 0.0753 | 0.0665 | 0.0709 | - | 0.0508 | 0.0550 | 0.0544 | 0.0515 | 0.0590 | 0.0656 | 0.0619 | 0.0533 |
| Dissolved Inorganic Carbon (mM) | 3.69 | 3.17 | 3.43 | - | 2.12 | 2.37 | 2.29 | 1.95 | 1.84 | 2.68 | 2.99 | 3.41 |
| pCO2 (μatm) | 681 | 436 | 558.5 | - | 86.8 | 200.7 | 141.6 | 119.8 | 635.7 | 503.1 | 1069.4 | 186.8 |
| Equilibrium CO2 | 13.93 | 13.66 | 13.79 | - | 12.12 | 12.88 | 13.00 | 13.78 | 12.99 | 12.38 | 13.44 | 12.39 |
| CO2 (μM) | 25.63 | 16.10 | 20.87 | - | 2.95 | 7.16 | 5.35 | 4.29 | 21.82 | 16.88 | 38.24 | 6.42 |
| Δ CO2 from Equilibrium | 11.703 | 2.444 | 7.07 | - | -9.18 | -5.72 | -7.65 | -9.49 | 8.83 | 4.51 | 24.80 | -5.97 |