You can track waste streams by weight or volume, although weight is considered more accurate. When containers are measured by volume, they are often estimated visually as “half full”, “three-quarters full” or “full.” The hauler will then approximate the amount of waste based on the volume of the empty dumpster or receptacle. This method can be highly inaccurate, especially if the waste materials are big empty containers that take up a lot of space in the receptacle.