EnviroBlend conducted treatability tests to determine field dosages for the treatment of arsenic, cadmium, copper, lead, selenium, and zinc. We designed a mapping plan that resulted in a 10 percent savings in treatment costs by identifying regions of the waste that required lower treatment dosages than would be required for a composite sample. Most parcels of material required only a single dosing of chemicals. Overall percentage of batches passing the TCLP after a single treatment exceeded 95 percent. Total treatment cost was less than half of the cost of hazardous waste disposal.