Liquid hydrocarbons are removed from waste pits where they exist in a free state, via physical or mechanical methods (with heat or otherwise). The pits are blinded and closed once the areas altered by confinement of the selected material have been cleaned, using clean granular material from nearby quarries or gravel pits. The bituminous mixture or liquid oil-bearing material extracted from the pits is filitered and stabilized, using heat or chemicals, by means of a Portable Crude Stabilizer Tank. After filtering thick emulsion contaminated solid debris, the remaining oil-bearing mass is preheated and immediately liquefied in a tank, using preheating coils and, optionally, injecting chemicals. Final filtration and breaking the oil-bearing emulsion down into its components occurs in a closed horizontal or tilted receptacle, lined with thermal insulation, with diameters ranging form 43 to 86 inches, and a total length of around 15, 30 or 45 feet (varying in accordance with the required treatment speed). The receptacle operates at different internal pressures, starting with atmospheric pressure, and at temperatures ranging from ambient temperature to a few degrees below steam temperature, so as not to exceed the boiling point.