APR-03 APR-04 APR-05 APR-06 APR-07 APR-08 APR-09
Rossdale Zone (1)              
Total Hardness (mg/L as CaCO3) (2) 177 177 174 174 173 161 --
pH (pH) (3) 7.8 7.8 7.8 7.8 7.7 7.8 7.7
Temperature (°C) 0.4 0.4 0.4 0.4 0.4 0.4 0.5
Total Chlorine Residual (mg/L) (4) 2.08 2.08 2.05 2.03 2.05 2.07 2.07
Alkalinity (mg/L as CaCO3) (5) 116 120 123 114 111 105 102
Conductivity (µS/cm) (6) 382 396 397 398 400 391 392
Caustic Soda (mg/L) (7) 6.55 6.37 7.93 8.99 10.7 10.9 11.1