Evaluation of Stabilization/Solidification for Treatment of Contaminated Soils from Waldick Aerospace Devices, Inc., Site, New Jersey

The Waldick Aerospace Devices WAD site is located in Wall Township, Monmouth Country, New Jersey. The 1.72-acre 6,960-sq m site was the location for manufacturing and electroplating of quick-release pins for the aerospace industry. The contaminants of interest are chromium, cadmium, volatile organics, and petroleum hydrocarbons. Soil sampling was performed at depths up to 15 ft 4.6 m and revealed concentrations of petroleum hydrocarbons, chromium, cadmium, and volatile organics as high as 120,000, 4,390, 37,000, and 6,848 mg l, respectively. The objectives of the evaluation of stabilization solidification SS technologies on WAD soils were to determine the effects of SS and determine if physical and chemical handling properties of WAD soils were improved. The physical and chemical properties were evaluated through the Unconfined Compressive Strength UCS test and Toxicity Characteristic Leaching Procedure TCLP. Reduction in contaminant mobility was evaluated by comparison of TCLP runs on untreated soils and treated soils. To evaluate the effect of volatile organic components in the soils, a portion of the soils was subjected to heat as a pretreatment to SS. The purpose of the heat treatment was to volatilize organic compounds and provide a comparison of SS between heated and nonheated soils.