Primary Author / Conference Presenter:
KEMRON Environmental Services, Inc.
Atlanta, Georgia, USA
KEMRON Environmental Services, Inc. performed an in-situ solidification/stabilization treatability study on materials sampled from the Camden Gas Site located in Camden, New Jersey. The test materials were impacted with volatile organic compounds, semi volatile organic compounds and petroleum hydrocarbons typically contained in coal tar waste samples. KEMRON evaluated the effectiveness of pozzolanic additives including combinations of type I Portland cement and blast furnace slag cement.
Testing was performed on a “representative”” site material in two phases including preliminary and optimization mixture evaluations. The study was designed to facilitate full-scale treatment using soil auger technologies. Therefore, KEMRON evaluated the density and viscosity of each reagent grout mixture to ensure these parameters were within an acceptable range for soil auger delivery.
Testing of the treated samples included unconfined compressive strength testing, permeability testing, wet/dry durability testing, and leachable volatile organic compounds, semivolatile organic compounds and extractable petroleum hydrocarbons analyses as determined by the Synthetic Precipitation Leaching Procedure (SPLP). Additional testing of selected candidate samples included leachable contaminants of concern as determined by the 1315 method of the Leaching Environment Assessment Framework (LEAF). The treatability study identified mixtures capable of meeting the project goals and regulatory criteria. It was then determined that full-scale remediation would depend on cost and feasibility of each treatment option.