Develop Documentation/Prepare Remedial Action Concept Plan for Building 24 Contamination Plume at Picatinny Arsenal
Abstract
The Picatinny Arsenal is located in Morris County, New Jersey, approximately four miles northeast of Dover. The installation, officially known as the U.S. Army Armament Research Development and Engineering Center, performs research on munitions and weapons. Recent investigations have found concentrations of trichioroethylene (TCE) and other volatile organic solvents in ground water. The metal plating shop in building 24 has been identified as a possible source of contamination. TCE and other solvents were used in degreasing operations at this metal shop. Three dimensional models of ground water flow and solute transport were developed and applied to the TCE plume in the shallow aquifers around building 24. These models were used to design remedial action pumping plans to prevent contamination from reaching Green Pond Brook and to clean up the contaminated ground water. Ground water will be pumped from collector wells and piped to a treatment plant, probably an air stripper, where TCE and other volatile organic contaminants will be removed. The U.S. Geological Survey MODFLOW model was used to simulate the ground water flow at the site. The ground water flow system at the site was represented as a three layer model. The first layer was the water table aquifer in the permeable glacial sediments near the land surface. The second layer was the confined glacial aquifer. The third layer was the fractured limestone and dolomite underlying the glacial sediments. The model was calibrated to the existing observation well data. A new program was written to translate the output of the MODFLOW model to a format suitable for input to the three dimensional, random-walk solute transport model (RAND3D). This program (PREMOD3D) computes three dimensional velocity vectors and sink (wells, gaining streams) locations for input to RAND3D.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 28, 1989
- Accession Number
- ADA462505