FORMER WOOD PRESERVING SITE REMEDIAL ACTION

ENTACT was engaged to remediate an 84-acre wood preserving site added to the National Priorities List in 1997 due to contaminated groundwater, soil, and sediment resulting from more than 30 years of wood treating operations. Previous cleanup phases had been insufficient, leading to the selection of in-situ solidification (ISS) as the revised remedy. On this project, ENTACT:

• Conducted an ISS demonstration prior to full-scale implementation
• Removed, stockpiled, and replaced clean overburden soils
• Executed ISS on 15,400 cubic yards of non-aqueous phase liquids (NAPL)-impacted soils
• Abandoned monitoring and injecting wells
• Installed concrete cloth in ditches adjacent to the railroad
• Hand-excavated riprap within a gas line right-of-way
• Graded the entire site
• Managed stormwater and restored the site with vegetation