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Gealagual 7eck4wS Inc Page 6 <br /> In Situ Remediation <br /> Pilot Test Work Plan <br /> Project No 507 2 <br /> June 10,2003 <br /> From a stoichiometric reaction standpoint, the oxidation of BETX should take <br /> ' approximately the same volume of peroxide as MTBE since there are a similar number of <br /> carbons in both molecules BTEX actually has more, but MTBE bonds are harder to break <br /> Gasoline range hydrocarbons, known as paraffins or alkanes, have similar numbers of <br /> ' carbon atoms as the aromatic hydrocarbons (or arenas) and MTBE, and therefore should <br /> require a similar volume of peroxide to oxidize <br /> ' Table 2: Matrix of Oxidants, Reactions with MTBE (CSH,,O) and Considerations for <br /> Use in the Field <br /> ' Oxidant & Reaction w/ Oxidant/MTBE OH" Optimal EO Field <br /> MTBE (lb/Ib) pH Test <br /> H2O2 4 <br />' C5H120 + 15"202 {re} ---> 58/1 3 - 5 1 78 <br /> 5CO2 + 21H2O <br /> 03 NA(3) (11 207 <br />' Mn04 <br /> 21Mn04 + 2C5H120 —> 28/1 (2) 1 70 <br /> 21 MnO, + l 00O2 + 240H <br /> S,082 NA(3) 2 5 - 11 201 <br /> From July/August 2002 Contaminated Soil& Groundwater,AEHS,2002 Oxygenated Fuel Issue <br /> (1) = If used with H2O2 of Fentons reagent, optimal pH is in the range of 3 to 5, otherwise <br /> increasing pH leads to faster ozone decomposition <br /> (2) =Three electrons are exchanged at a pH of 3 5 to 12 <br /> (3) =NA, information not available <br />' For this site will hydrogen peroxide y g p 11 be infected into the subsurface via the use of an <br /> ' existing monitoring well (MW-9) The peroxide undergoes decomposition to form the <br /> hydroxyl radical, which would then break down the BETX and TPH in the groundwater and <br /> capillary zone at the site Monitoring conducted during the test will determine if ozone or <br /> ' oxygen will be added to the infection protocols <br /> GTI proposes utilizing Applied Process Technologies Inc (APT) of Pleasant Hill, California <br /> ' to develop and conduct the chemical infection portion of the pilot test See Appendix C for <br /> information on APT systems information <br /> ' 3.1 Pre-Test Soil and Groundwater Sampling <br /> Soil and groundwater sampling will be necessary to evaluate the existing conditions in the <br /> ' subsurface The concentrations of chemical infections, infection frequency and nutrients to <br /> stimulate biodegradation of hydrocarbons are dependent on the pre-pilot test chemical state <br /> of the soils <br /> 1 <br />