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PRIMA Environmental dwynne/3 <br /> July 12,2006 <br /> 45 <br /> 40 <br /> N <br /> 35 Initial concentraiton of H2O2 <br /> .� }d 250 g!L Fe in all cases <br /> N d <br /> 30 d 0 1%H2O2 <br /> I CI 3%H2O2 <br /> -.1 25 i <br /> _ --A-10%H 20 <br /> 0 <br /> >° 20 <br /> c <br /> I� 15 <br /> 10 <br /> D <br /> 5 <br /> 0 <br /> 00 50 100 150 200 250 <br /> Time,hours <br /> Figure 1. Longevity of Modified Fenton's Reagent (H202+jron citrate). <br /> Soil DP-8-47 5 <br /> Table 3. Summary of Modified Fenton's Reagent Lon evi Test Results. <br /> Test Expected* volume Actual volume of Time for 94% of gas <br /> offs L aoff- as L to be generated, hrs <br /> 1%H2O2 3 3 48 66 <br /> 3% H2O2 99 117 4 <br /> 10% H2O2 33 41 3 5 <br />' * At 25C and I atmosphere, 1 L of I%H2Oz generates approximately 3 3L of oxygen <br /> If you have any questions regarding thus report of findings,please give me a call at 916- <br /> 363-8798 Thank you for the opportunity to be of service <br /> Sincerely, <br /> PRIMA Environmental <br /> Cindy G Schreier, PhD <br /> Principal <br />' Attachment <br />