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Table 2. Reaction Conditions for H202 Decomposition Tests. <br /> Test Soil:Gquid Initial H202 Initial pH Initial Fe*, <br /> Number Ratio % m <br /> 1 2 : 1 2 Ambient 0 <br /> 2 2 : 1 5 Ambient 0 <br /> 3 2: 1 2 2-3 0 <br /> 4 2: 1 5 2-3 0 <br /> 5 2 : 1 2 2-3 250* <br /> 6 2 : 1 5 2-3 250 * <br /> 7 2 : 1 2 Ambient 250* * <br /> 8 2 : 1 5 Ambient 250* * <br /> * Iron added as iron sulfate heptahydrate. <br /> * *Iron added as GrowMoreTM agricultural chelated iron. <br /> 2.6 Buffering Curves <br /> Soil buffering curves were generated to estimate the amount of acid that can be added <br /> without long-term effects on pH. Soil (50 g) and dilute sulfuric acid solution (50 mL) <br /> were combined in a 1 : 1 soil to liquid ratio . Three concentrations of acid were used: pH <br /> 1 , pH 2, and pH 3 . A control containing deionized water instead of acid was also run. <br /> The pH was measured periodically at 1 , 2, and 7 days. <br /> 2.7 Analytical Methods <br /> The method for each analysis and the laboratory that performed each analysis are given in <br /> Table 3 . <br /> PRIMA Environmental, Inc. 9 Eval of Peroxide <br /> February 8, 2007 Cambrian Street, Davis <br />