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Mr Michaellafizrna a., page 3 rProposed Bench Testing for Oxidizer Injection acted soil remaining Despite the lack of groundwater plume migration and the limited volume of imp ears have remained groundwater over last four evalua e the potential for the bencath the site, contaminant concentrations We Propose relatively stable oxidizing zing sou onto agCce significantly rate the pace of cleanup injection of were vated in 1999 to a depth of 20 feet OnlHminor resignificant levels vels of Contaminated soils were exca les collected from the excavation re$ent in confirmation soil same sleeted at depths of 25 and 30 feet in monitoring een the depths of p resent in soil samples co TPHd were p acted soil does It is estimated that impacted soil remains beneath the, diameter of the area of imp able aids of 20 feet and approxirnately 35-40 feet below gra approximate 1Q0tion c ed Assuming ori average TPHd concentration of 2,004 ppa e not appear to exceed l5 feet These dimensions indicate that app is of soil samp soil m the saturated zone are impac Anal leas resul the mass of contaminant is about d area 0 pounds n through the site is ed area of residual soil contamination ti remaining beneath the summarized in Table 3 The estimated Figure 3 A cross sec floor of the 1999 remedial excavation is shown on Fig depicted on Figure otentialiy amendable to the Introduction l°of chemical Q f et�0 12 5 feet The impacted area appears to be p which is monitoring well MW3 The excavation was backfilled from a depth clay well throughpermeability Beneath this are five or mor bee n ecnative d iritoi monitoring with pea gravel of high peen An oxidizing solution could j underlain by poorly graded sand ea ravel within the farmer Presumably the greater part of the solution would ltwould then function as a reservoir, MW3 h permeability p contaminated soil and to excavation pit due to its hig p h the underlying Petroleum allowing the oxidizing solution to migrate vertically throng dioxide and water portion of the well screen The salutiobnon Quid react with the p siphon through the lower p hydrocarbons to car hydrocarbons sorbed to the soil, oxidizing the by Fenton's Reagent has as the oxidizing solution We propose to evaluate using Fentoe Rot gidu In government-sponsored studi e, the I-ants long been used in n s wastewater Reagent has been shown to be effective in oxidizing organic infection of Fento such as fuel hydrocarbons and chlorinated solvents e formation f hydroxyl radicals by -ton's Reagent oxidizers known Reagent consists of a solution of H2O2 Fe ent is one of strongest oxClassi known due tot en h of the solution is the catalysis of hydrogen peroxide The oxidizing strength typically in the form of FeSOa � This may be accomplished by catalyzed by ferrous iron, yp Hof approximately 3- rade Fe504) maximized when the treated water is at a p To control lfiiric acid (which is a common adulterant temper is between 70-1000 F the addition of su action e optimal temp eroxide and have water oil Temperature will rise ` th the necessary to stage the introduction of P temperature and pHs maybe the heat of reaction hand to dilute the reaction and q s the Potential to alter the valence of n (RWQCB) has The oxidizing strength of the reetallic Ions and agent has p Central Valley Regi halogens The Regional Water Quality Control Board, 6\C3A0UNDZE.\W00LSLY C"T\QMQ\2005\4QM2005 doc