TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Method: The method controls slope leakage and slope failures through the use of large temporary external containment berms and one or more impermeable liners in the berms. The method controls slope leakage and slope failures through the use of permeable, semipermeable and impermeable membranes placed within the waste pile. The method involves delivering oxygen in a liquid media to aerobically degrade large volumes of waste. The method involves mixing normal air and/or pure oxygen into liquid and then applying the oxygen-liquid mixture to waste for the purpose aerobic decay of the waste. The method facilitates the introduction of oxygenated liquid with surface excavations, or large diameter recoverable pipe and pockets of highly permeable waste that serves as plenums that facilitate the rapid absorption of liquid and oxygen. The method facilitates the introduction of oxygenated liquid into bored holes, trenches, piping or aggregate placed in the waste. The method screens and separates digested MSW, green waste and construction debris into topsoil or compost that has been processed with aerated liquid. The method aerobically treats a landfill or compost area with oxygenated liquid, such that facility footprint is reused after the mining process. The method introduces large quantities of liquids into waste piles (for the purpose of aerobic degradation) that are carrying oxygen due to mixing based on pressure, chemical reactions, biological activity or mechanical entrapment methods. Such mixing processes are e.g. venturis, compressed air injection, injection of oxygen containing gases, pressurized liquid combined with oxygen gasses and mechanical stirring. Aeration reactions include the freezing of the liquid as well as the addition of chemical substances to the liquid that break down and release oxygen. The method aerobically treats through the addition of oxygen and the introduction into a waste pile leachate, liquid industrial waste, sewage, grey water, and any other aerobically degradable liquid wastes in the waste piles. The method aerobically pretreats leachate, liquid industrial waste, sewage, grey water and any other liquid wastes in the waste piles. The resultant waste is prepared aerobically for discharge to a waste-water treatment plant in lagoons, tanks or similar type of storage vessel. The method aerobically treats leachate, liquid industrial waste, sewage, grey water and any other liquid wastes in the waste piles. The resultant waste is prepared aerobically for discharge to surface or groundwater in lagoons, tanks or any other type of storage vessel. The method aerobically treats a waste pile with snow or liquid waste that has been aerated or vaporized and frozen and buried such that the waste materials are aerobically degraded. The method captures and uses the heat produced through the exothermic aerobic treatment of waste in the leachate collection system, a piping grid in the waste, a piping system below the liner system or the leachate recirculation system. The method captures and uses the heat produced through the exothermic aerobic treatment of waste. The heat is used to treat the waste aerobically in lagoons, tanks, or other storage vessels in climates that would otherwise not have sufficient temperatures to allow the aerobic bacteria to thrive.