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f <br /> SECO'NTERNATIO <br /> 57LeIa NAL INCORPORgTED <br /> July 18, 2005 S E C O R Latoya t CAC'c e,2°Floor <br /> ' 925-299-9300 94549 VOA 'Vsecorcom <br /> 925-299-9302 FgJt <br /> Mr. Joseph D. Angulo <br /> Geologist <br /> Geological Technics Inc. <br /> 1101 7th Street <br /> Modesto, CA 95354 <br /> OZONE SPARGING BEN <br /> J. M. Equipment IiSCALE STUDY PROPOSAL <br /> 1245 W Charter Way <br /> Stockton CA 95206 <br /> ' Dear Mr. Angulo <br /> SECOR International Incorpc rated (SECOR) has re <br /> ng <br /> Benchscale Study for Geol gic Technics, Modesto, California'(GIT)*prepared this.proposal for an Ozone proposed test is <br /> intended to address concern <br /> soils ata site under evaluati nabout <br /> oou the possible mobilization of metals and trace elements in <br /> Prepared in response to the WQCB requlication est for aEbench escale analysis of the effectiveness <br />�( and potential hazards gener ted b in situ ozone s ar in g' The proposed test was <br /> J intended to evaluate the a ectiv Hess of ozone s <br /> P 9 gat the subject site. The study is <br /> out the <br /> petroleum hydrocarbons-imp ted soil and groundwater alnd to technologyng ddress concerns <br /> 1 <br /> Possible mobilization of gene al minerals ingsoils, impacts 4o total dissolved rs hd Iaaind the <br /> creation . degradation bypro ucts from petroleum hydrocarbon and fuel oxygenate chemical <br /> oxidation. The study has been designed Based on the outline Provided b RW <br /> g <br /> OBJECTIVE p Y OCB. <br /> The objectives of the study are to evaluate: 1) the efficiency of ozone sparging in saturated soil <br /> on methyl tertiary butyl ether (MTBE), benzene/toluene/ethylbenzene/xylene (BTEX) and total <br /> petroleum hydrocarbons in the aasoline range (TPH <br /> from ozone sparging; and 3) the leachability of metals from soil as a result of ozone sparging. <br /> 9); 2) the potential for byproduct generation <br /> The following metal and trace el ment suite was requested by the RWQCB for analysis: <br /> aluminum, antimony, ars nic, barium, beryllium, cadmium, calcium, chromium <br /> (III and VI), cobalt, co per, iron, lead, magnesium, manganese, mercury, <br /> molybdenum, nickel, pot ssium, selenium, silver, sodium, thallium, tungsten, <br /> vanadium, and zinc. <br /> PROCEDURES <br /> Sample Collection <br /> Soil and groundwater samples will be collected from the Site during the installation of wells. Soil <br /> Samples will be collected at depths within the capillary fringe zone. Grab groundwater samples <br /> will be collected from the most impacted well upon completion of the well construction. <br /> 1 <br />