arsenic remediation

Soil Washing at Vineland Chemical Superfund Site

ART Engineering, LLC

Design, Construction and Commissioning of Soil Washing Treatment Facility for US EPA and US Army Corps of Engineers


arsenic leaching

Soil Screening

soil washing

Soil Treatment Plant

Soil Extraction


The Vineland Chemical Co. manufactured herbicides from 1950 to 1994 on this 54-acre site in a residential and industrial area in Vineland, N.J. Arsenic by-products from these operations resulted in contamination of soil and groundwater at the site. In late 2001, the US Army Corps of Engineers (USACE) selected ART Engineering LLC (under contract to Sevenson Environmental Services, Inc.) to conduct detailed design activities to prepare a  final remedial design for soil washing treatment of an estimated 400,000 tons of contaminated soil located at the Plant Site (OU1) and Blackwater Branch (OU3) areas. 

The use of soil washing treatment plant  at Vineland Chemical Superfund Site has been classified by USACE and EPA as a "great success" EPA Reference Letter.pdf. The project was highlighted in recent USACE publication "The Corps Environment, April 2005, Vol 6. No.2".  The soil treatment plant has a treatment capacity of  70 tph and includes the following unit operations: wet screening, separation (hydrocyclones), soil extraction, arsenic precipitation, leachate regeneration, water clarification, sand dewatering, fines thickening & filter press dewatering. The arsenic contamination is concentrated in small volume of filter cake residue which is shipped off-site for disposal at a permitted disposal facility.

plant design

process design

soil flushing

Plant Fabrication Equipment Assembly Leach Tanks - Installation
soil remediation soil treatment arsenic soil decontamination
Soil Feeding Contaminated Soil Feed Soil Screening
sand leaching arsenic precipitation soil cleaning
Sand Leaching Arsenic Precipitation Clean Soil

The primary tasks performed by ART were as follows:

The 100% process design documents and equipment procurement specifications were submitted in mid 2002 for review by USEPA, USACE, and New Jersey Department of Environmental Protection (NJDEP).  USEPA and USACE approved the ART design for construction late 2002. Construction activities included construction of a plant building, soil treatment plant, plant support systems, chemical storage area and outside contaminated and clean soil storage pads. Plant construction was completed in fall of 2003. After a brief commissioning and prove-out phase the plant assumed full-scale operations at original design rate of 56 tph. ART performed a comprehensive plant optimization in July 2004. Through plant optimization effort,  production rate was increased from 56 tph to 70 tph resulting in estimated savings of $3 M for the life of the project. The soil washing operations were completed in the fall of 2007. A total of 410,000 tons were processed through the soil washing plant.