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i <br /> 3.5 Effect of Treatment on TSS and Particle Size <br /> IOzonation of groundwater only turned the groundwater a cloudy orangish color and <br /> increased the TSS from 4 mg/L m untreated GW to 14 5 mg/L in treated water This was <br /> due to oxidation of dissolved iron and or manganese, both of which were present in <br /> untreated GW The concentration of TSS was too low to obtain a particle size <br /> distribution <br /> I <br /> lie <br /> PRIMA Environmental 13 <br /> Eval of Ozone <br /> ENSR-Unocal Sone <br />' January 27,2005 <br />