Environmental projects benefit from the versatility of geotechnical construction techniques. Sheetpiles provide containment of hazardous in situ materials along riverbanks and other sensitive areas. Soil mixing can immobilize contaminated soils in place, and remediate soils with non-toxic additives, and create passive or active containment barriers. Jet grouting, chemical grouting, and slurry walls encapsulate contaminated sites to prevent off-site migration of contaminants. Rigid inclusions support structures on contaminated sites without creating a vertical conduit for contaminants. Compaction grouting mitigates sinkholes that can threaten the integrity of landfills. Lime injection systems lower the pH of acidic soils. Hayward Baker has experience with the full range of ground improvement techniques and knows how to effectively employ them on environmental projects.