Container for plurality of immiscible liquids

Claim 1

A RESERVOIR FOR STORING TWO IMMISCIBLE LIQUIDS OF DIFFERENT DENSITIES WHICH COMPRISES A WALLED-IN SPACE, SAID SPACE CONTAINING THEREIN A LINER COMPOSED OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ASPHALT, PLASTIC, OR RUBBERY MATERIAL WHICH IS SENSITIVE TO THE SOLVENT EFFECTS OF THE LIGHTER LIQUID AND SURROUNDING THE TOP OF SAID SPACE AN IMPERVIOUS WALL THAT AND SURRROUNDING THE TOP OF SAID SPACE AN IMPERVIOUS WALL THAT PORTION OF SAID WALL AND THE UPPER PORTION OF SAID LINER BEING ATTACHED IN SEALING ENGAGEMENT, SAID WALL CONTAINING AT A POINT ABOVE THE LINER A FIRST VALVED CONDUIT OUTLET MEANS COMBINED WITH A FIRST LIQUID LEVEL SENSING MEANS WHICH ALLOWS REMOVAL OF THE HEAVIER LIQUID IN RESPONSE TO THE LIQUID LEVEL SENSING MEANS SUCH THAT THE LEVEL OF THE HEAVIER LIQUID IS MAINTAINED AT A CHOSEN LEVEL ABOVE THE OUTLET MEANS, SAID WALL FURTHER CONTAINING A WEIR MEANS LOCATED ABOVE SAID FIRST OUTLET CONDUIT MEANS, SAID WEIR MEANS AND SAID IMPERIOUS WALL DEFINING AN OVERFLOW AREA CONTAINING A SECOND LIQUID LEVEL SENSING MEANS BEING CONSTRUCTED AND ARRANGED TO CONTROL A SECOND VALVED CONDUIT OUTLET MEANS SUCH THAT AT LEAST THE LIGHTER LIQUID CAN BE REMOVED FROM THE RESERVOIR.