Laserfiche WebLink
i <br /> 5.0 CONCLUSIONS <br /> The laboratory study clearly demonstrated that ozone and Peroxone (a mixture of ozone <br /> and hydrogen peroxide) could destroy TPH-g, TPH-d and BTEX in soil and groundwater <br /> from this site Destruction appears to be more efficient with Peroxone, which volatilized <br /> lower amounts of CDCs than ozone Spargmg with nitrogen (an inert gas) also <br /> significantly reduced the amount of COCl in groundwater, but the removal was due to <br /> volatilization, not hydrocarbon destruction <br /> Treatment with ozone and Peroxone generated Cr(VI), but tests indicate that this Cr(VI) <br /> can naturally attenuate upon exposure to untreated soil In some tests, the amount of <br /> Cr(VI) produced was very low (< 6 µg/L) In other tests, the Cr(VI) was very high (570 <br /> µg/L) The cause of the variability is unknown Tests indicated that untreated soil could <br /> reduce Cr(VI) and that on a per kilogram basis, the amount of Cr(VI) that can be reduced <br /> is greater than the amount that can be oxidized <br /> Bromate was not detected above the detection limit of 8 µg/L in either the ozone or <br /> Peroxone tests Although the concentration of bromide decreased in these tests, it was <br /> not converted to bromate <br /> • The effect of ozone and Peroxone on most other water quality parameters was small <br /> Exceptions were barium and vanadium, the concentrations of which increased upon <br /> treatment <br /> The groundwater oxidant demand was 110-180 mg 03/L, which is lower than predicted <br /> based on the concentrations of CDCs, but indicates that the clean groundwater does not <br /> have an excessively high demand The soil oxidant demand was 400-700 mg 03/kg soil <br /> PRIMA Environmental 24 Eval of Peroxone <br /> June 1,2005 ETIC-Exxon I#3942 <br />