Long Lake Containment Facility Water Quality Prediction Model Version 2.0, Ekati Diamond Mine (BHP Billiton, March 2008)

Long Lake Containment Facility (LLCF) Water Quality Prediction Model Version 2.0 for the Ekati Diamond Mine, prepared by BHP Billiton Diamonds Inc. (Yellowknife). Documents the new 2005 model and its 2006 findings on previously identified trends, including mine plan inputs for Panda OP/UG, Misery OP/Pushback, Koala OP/UG, Koala North OP/UG, Fox OP, Beartooth OP, Sable OP, Pigeon OP pits (April 2006 plan). Includes physical model set-up (mass balance approach across Cells C, D, E), historical process plant discharge concentrations (potassium 21.8, molybdenum 0.27, sulphate 128.9, nitrate 4.9, arsenic 0.0058 mg/L), and projected loadings June 2005-2011.