Laserfiche WebLink
2.6.6 Long-term Reducing Capacity of Soil—Post-treatment, Spiked Cr(VI) <br /> To determine whether soil could reduce relatively high concentrations of Cr(VI) in <br /> groundwater leaving the treatment zone, two tests (A and B) were performed using <br /> Peroxone-treated groundwater spiked with Cr(VI) These tests were similar to the test <br /> described in Section 2 6 5, except that in Test A, groundwater was spiked to 750 gg/L <br /> Cr(VI)prior to spargrng <br /> In Test B, groundwater was spiked to 570 pg/L Cr(VI) prior to treatment with Peroxone <br /> After treatment, the soil water slurry was sparged with air for a few minutes to remove <br /> residual ozone The treated water was then decanted and a series of replicates containing <br /> 50 g untreated COMP7 soil and 50 mL of treated groundwater were prepard The <br /> replicates wee placed on a shaker table Periodically, one replicate was destructively <br /> sampled and analyzed for Cr(VI) <br /> PRIMA Environmental 10 Eval of Peroxone <br /> June I,2005 ETIC-Exxon#3942 <br />