| Report Year: 2009 |
| Lake Ahquabi, Warren County |
| Carbon Balance Table |
| Parameter | 6/18/2009 | 7/20/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 100 | 96 | 98.0 | - | 96.5 | 124.7 | 109.3 | 106.0 | 64.8 | 89.7 | 88.7 | 129.7 |
| Dissolved Organic Carbon (mM) | 0.52 | 0.52 | 0.52 | - | 0.62 | 0.51 | 0.69 | 0.85 | 0.88 | 0.89 | - | - |
| Temperature (oC) | 24.5 | 24.9 | 24.7 | - | 26.4 | 26.5 | 26.7 | 24.0 | 24.8 | 26.7 | 24.7 | 25.2 |
| Specific Conductivity (μS/cm) | 220.0 | 220.0 | 220.00 | - | 226.68 | 302.70 | 247.66 | 225.93 | 222.99 | 261.00 | 203.76 | 214.48 |
| pH | 8.8 | 8.6 | 8.7 | - | 8.8 | 8.5 | 8.8 | 8.4 | 8.9 | 8.7 | 8.6 | 8.5 |
| I (Ionic Strength ?) | 0.0385 | 0.0385 | 0.0385 | - | 0.0397 | 0.0530 | 0.0433 | 0.0395 | 0.0390 | 0.0457 | 0.0357 | 0.0375 |
| Dissolved Inorganic Carbon (mM) | 1.90 | 1.85 | 1.87 | - | 1.77 | 2.40 | 2.07 | 2.06 | 1.20 | 1.70 | 1.69 | 2.51 |
| pCO2 (μatm) | 141 | 197 | 168.9 | - | 259.8 | 407.7 | 164.8 | 576.7 | 68.3 | 204.4 | 345.4 | 412.0 |
| Equilibrium CO2 | 12.84 | 12.70 | 12.77 | - | 12.19 | 12.13 | 12.07 | 13.08 | 12.83 | 12.11 | 13.00 | 12.60 |
| CO2 (μM) | 4.89 | 6.76 | 5.82 | - | 8.61 | 13.22 | 5.34 | 19.42 | 2.40 | 7.08 | 14.14 | 14.21 |
| Δ CO2 from Equilibrium | -7.951 | -5.939 | -6.95 | - | -3.58 | 1.09 | -6.73 | 6.34 | -10.43 | -5.03 | 1.13 | 1.61 |