Stabilization of more than 57,000 cubic yards of soil impacted by arsenic, cadmium, chromium, lead, mercury, and nickel. The site is surrounded by extensive residential development. Advanced geostatistics and XRF analysis were used to focus the site excavation and treat and handle only affected soil. We constructively reused treated soil, sludge, and waste. The treated soil was used as internal berms within the onsite landfill. Results included a significant reduction in the treatment of additional material by attributing the existing chromium to background sources. The project was performed for a final cost of $7 million versus the preliminary cost estimated at $12-$25 million, based on USEPA data.