Five grams of soil contaminated with 1,4-dichlorobenzene from a local Superfund site were placed in contact with 40 mL of clean distilled water in a closed vessel for 24 h at 298 K. The solution was stirred and after 72 h the soil was separated by centrifugation at 12,000 rpm. The aqueous concentration was determined to be 35μg/L. If the partition constant was estimated to be 13 P/kg, what is the original contaminant loading on the soil?