| Report Year: 2009 |
| Prairie Rose Lake, Shelby County |
| Carbon Balance Table |
| Parameter | 7/14/2009 | 6/10/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 168 | 190 | 179.0 | - | 121.8 | 149.0 | 144.5 | 126.3 | 100.7 | 140.5 | 138.7 | 139.7 |
| Dissolved Organic Carbon (mM) | 0.27 | 0.36 | 0.32 | - | 0.30 | 0.51 | 0.32 | 0.36 | 0.78 | 0.69 | - | - |
| Temperature (oC) | 25.1 | 20.0 | 22.5 | - | 25.3 | 25.8 | 23.9 | 21.3 | 24.2 | 24.7 | 23.3 | 25.3 |
| Specific Conductivity (μS/cm) | 380.0 | 430.0 | 405.00 | - | 319.59 | 383.56 | 363.78 | 355.88 | 363.87 | 371.36 | 320.11 | 336.83 |
| pH | 8.4 | 8.1 | 8.2 | - | 8.7 | 9.1 | 8.8 | 8.3 | 8.7 | 8.7 | 8.7 | 8.8 |
| I (Ionic Strength ?) | 0.0665 | 0.0753 | 0.0709 | - | 0.0559 | 0.0671 | 0.0637 | 0.0623 | 0.0637 | 0.0650 | 0.0560 | 0.0589 |
| Dissolved Inorganic Carbon (mM) | 3.29 | 3.79 | 3.54 | - | 2.24 | 2.64 | 2.71 | 2.49 | 1.92 | 2.62 | 2.56 | 2.61 |
| pCO2 (μatm) | 635 | 1244 | 939.3 | - | 522.8 | 100.0 | 212.9 | 579.0 | 198.0 | 506.4 | 578.2 | 190.1 |
| Equilibrium CO2 | 12.63 | 14.67 | 13.65 | - | 12.63 | 12.38 | 13.13 | 14.12 | 12.96 | 12.81 | 13.45 | 12.57 |
| CO2 (μM) | 21.66 | 49.32 | 35.49 | - | 19.23 | 3.42 | 7.95 | 22.15 | 7.09 | 17.13 | 23.61 | 6.61 |
| Δ CO2 from Equilibrium | 9.030 | 34.653 | 21.84 | - | 6.60 | -8.96 | -5.18 | 8.02 | -5.88 | 4.32 | 10.17 | -5.97 |