ABSTRACT
The formulae developed for S/S treatment of hazardous wastes in the laboratory may behave differently in the field due to the variation in composition of the waste, the accuracy of the weighing system, and the type of mixing and placing processes. Typical goals for S/S treatment of wastes include:
• Contaminant mobility (leachate) reduction • Support strength • Environmental durability • Low hydraulic conductivity
To assure that these goals are achieved, quality assurance/quality control (QA/QC) plans are indispensable parts of the treatment process. Test results provide important feedback used to decide whether or not the formulation and mixing process need adjustment. Past experience and sound judgment are important in evaluating test results and assessing their significance in controlling the treatment process.
