aDiscards include the solid waste remaining after recycling and composting. These discards are mainly disposed of in landfills or combusted, although some waste is littered, stored, or disposed on site, particularly in rural areas. 放弃包括固体废料余留在回收和堆肥以后。 这些放弃在垃圾填埋特别在乡...
Types of Septic Systems, Alternative Septic System Designs, Master List & Descriptions of Kinds of Septic Systems - Alternative Septic Systems for Problem and Difficult Sites: Septic Systems, onsite waste disposal alternative designs for problem soils an