| Report Year: 2009 |
| Briggs Woods Lake, Hamilton County |
| Carbon Balance Table |
| Parameter | 6/25/2009 | 7/30/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 125 | 143 | 134.0 | - | - | - | 205.3 | 166.5 | 121.0 | 177.5 | 142.3 | 143.0 |
| Dissolved Organic Carbon (mM) | 0.42 | 0.47 | 0.44 | - | - | - | 0.47 | 0.41 | 0.64 | 0.60 | - | - |
| Temperature (oC) | 27.4 | 25.2 | 26.3 | - | - | - | 25.5 | 21.8 | 20.7 | 24.4 | 22.7 | 25.4 |
| Specific Conductivity (μS/cm) | 290.0 | 350.0 | 320.00 | - | - | - | 600.29 | 538.37 | 540.95 | 645.59 | 514.38 | 393.11 |
| pH | 9.2 | 8.6 | 8.9 | - | - | - | 8.4 | 8.6 | 8.7 | 8.4 | 8.6 | 9.2 |
| I (Ionic Strength ?) | 0.0508 | 0.0613 | 0.0560 | - | - | - | 0.1051 | 0.0942 | 0.0947 | 0.1130 | 0.0900 | 0.0688 |
| Dissolved Inorganic Carbon (mM) | 2.17 | 2.74 | 2.45 | - | - | - | 4.00 | 3.17 | 2.30 | 3.46 | 2.71 | 2.47 |
| pCO2 (μatm) | 55 | 274 | 164.2 | - | - | - | 741.6 | 442.6 | 204.8 | 854.0 | 345.9 | 76.0 |
| Equilibrium CO2 | 11.82 | 12.58 | 12.20 | - | - | - | 12.50 | 13.94 | 14.48 | 12.88 | 13.72 | 12.51 |
| CO2 (μM) | 1.74 | 9.31 | 5.53 | - | - | - | 25.56 | 16.22 | 8.35 | 29.60 | 11.93 | 2.52 |
| Δ CO2 from Equilibrium | -10.072 | -3.273 | -6.67 | - | - | - | 13.06 | 2.28 | -6.13 | 16.72 | -1.78 | -9.99 |