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Oxygen Release Compound,ORC® Study with Dow Chemical on Soil Remediation Applications (Biopiles) REGENESlS conducted a biopile study with Dow Chemical which compared ORC, a time release form of magnesium peroxide, to Permeox, a commercial form of calcium peroxide. Soil piles were constructed with a TPH level of 1000 - 2000 ppm Levels of .25% and 5% ORC were trialed. 38% Permeox had the equivalent oxygen to 5% ORC The use of higher levels of Permeox, such as a 2X application of.76%, were deemed to be potentially toxic due to pH effects. The Table below presents the data after two weeks Comparative Study inB-i le Remediation between ORC and Permeox and Projectimg made ftQm the-Derived Rate Constants Remediation Tune to 100 ppm TPH From Treatment % Reduction Rate Constant 1000 ppm 2500 ppm 5000 ppm Control 12 00935 25 weeks 34 weeks 42 weeks 38 % Ca02 54 03669 6 weeks 9 weeks 11 weeks .25% M902 69 05885 4 weeks 5 weeks 7 weeks 5%MgO2 74 0.6735 3 weeks 4 weeks 6 weeks The treatment cells consisted of 5 cu. yds. of soil and straw with a fertilizer mixture. Data was taken after two weeks. It should be noted that the study also included a 2.5 cu. yd. tilled control which responded essentially the same as the untitled control (9% vs. 12% reduction) The conclusion of the study was that the ORC was more efficient on both a lower and an equal oxygen basis, compared to Permeox. While Permeox has about 30% more oxygen on a weight basis, it is not used as efficiently because, without intercalation, it is released about ten times faster than ORC. It also has a tendency to "lock-up"as calcium hydroxide by-products seat off the surface of the Permeox particles. This is not as severe a problem with magnesium hydroxide and the "lock-up" effect is disrupted by the patented intercalation process that provides longevity to ORC particles