| Report Year: 2009 |
| Oldham Lake, Monona County |
| Carbon Balance Table |
| Parameter | 6/11/2009 | 7/15/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 216 | 221 | 218.5 | - | 249.4 | 212.2 | 213.2 | 190.6 | 142.3 | 191.3 | 173.3 | 186.3 |
| Dissolved Organic Carbon (mM) | 0.42 | 0.50 | 0.46 | - | 0.44 | 0.65 | 0.29 | 0.56 | 0.86 | 0.64 | - | - |
| Temperature (oC) | 19.3 | 26.1 | 22.7 | - | 25.4 | 25.7 | 24.7 | 21.8 | 24.2 | 26.5 | 21.6 | 24.8 |
| Specific Conductivity (μS/cm) | 420.0 | 430.0 | 425.00 | - | 493.47 | 419.77 | 443.72 | 389.16 | 398.44 | 378.42 | 361.27 | 374.23 |
| pH | 8.8 | 8.5 | 8.6 | - | 8.0 | 8.8 | 8.6 | 8.7 | 8.8 | 8.7 | 8.8 | 8.6 |
| I (Ionic Strength ?) | 0.0735 | 0.0753 | 0.0744 | - | 0.0864 | 0.0735 | 0.0777 | 0.0681 | 0.0697 | 0.0662 | 0.0632 | 0.0655 |
| Dissolved Inorganic Carbon (mM) | 4.10 | 4.29 | 4.20 | - | 4.99 | 3.92 | 4.10 | 3.59 | 2.66 | 3.63 | 3.39 | 3.57 |
| pCO2 (μatm) | 305 | 647 | 476.3 | - | 2116.2 | 304.2 | 574.6 | 300.6 | 180.9 | 322.5 | 313.4 | 388.8 |
| Equilibrium CO2 | 15.00 | 12.26 | 13.63 | - | 12.59 | 12.43 | 12.83 | 13.95 | 12.98 | 12.16 | 14.31 | 12.75 |
| CO2 (μM) | 12.38 | 21.45 | 16.92 | - | 72.36 | 10.15 | 21.11 | 11.50 | 6.25 | 10.81 | 13.89 | 13.54 |
| Δ CO2 from Equilibrium | -2.623 | 9.192 | 3.28 | - | 59.77 | -2.29 | 8.28 | -2.46 | -6.73 | -1.35 | -0.42 | 0.79 |