Cuentas Medioambientales: Cuenta de los Residuos National results Quantity of waste treated by categories CRV. Incineration with recuperation of energy and underground incineration. Units: thousands of tonnes ,1 - Incineration with energy recovery (R1),2 - Underground incineration (D10), 01, 02, 03 Chemical waste,67.131,23.342, 01, 02, 03 excl. 01.3 Chemical waste excluding used oils P,155.607,54.106, 01.3 Used oils P,4.549,0.079, 05 Medical and biological waste,8.937,3.107, 05 Medical and biological waste P,23.185,0.401, 07.7 Waste containing PCBs P,3.356,0.058, 10.1 Domestic waste and similar,1,975.032,0.000, 10.2 Mixed and undifferentiated materials,68.782,23.916, 10.2 Mixed and undifferentiated materials P,0.405,0.007, 10.3 Waste separation,0.000,0.000, 10.3 Waste separation P,14.450,0.250, 11 Common sludge,739.465,257.118, 07, 08, 09, 09, 12, 13 Other wastes,440.000,153.000, 07, 08, 09, 09, 12, 13 Other wastes P,111.499,38.769, Total non-hazardous,3,299.061,460.376, Total hazardous P,313.051,93.670, Total,3,612.112,554.046, Notes: 1) CRV: European Waste Classification P: Hazardous waste R1: Main use as fuel or as another means of producing energy. E.g.: incineration of fuels and oils D10: áWaste incineration - No recuperation of energy, such as household waste, hazardous, medical or animal waste. Underground incineration Source: National Statistics Institute