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r <br /> (C) .1990 BIO NATIONAL CORPORATION <br /> _ 5 TREATMENT OF EXTRACTED GROUNDWATER PRIOB� TO SEWERING OR RECYCLING <br /> 5.1 Summary of Certified Laboratory Analysis of Water Samples drawn on <br /> October 29, 1989 <br /> BEFORE AFTER AFTER <br /> ADVO% ; ADVO%= GAC3 <br /> DETECTED CONTAMINANT uBm/Lugm/L ugm/L <br /> (EPA 5030/8010) w <br /> Methylene Chloride 0.71 No N/A ND <br /> 1,1,1-Trichloroethane 1.7 N/A ND <br /> i Tetrachloroethylene 5.2 ��5 N/A ND <br /> (EPA Benzeneo ) 14 N/A ND <br /> Toluene 15 N/A ND <br /> p-Xylene 3.5 N/A ND <br /> m-Xylene 2.9 N/A ND <br /> o-Xylene 1.5 i(Dc-o N/A ND <br /> !` �propylbenzene 7.6 1 N N/A ND <br /> TPH (Gasoline) 1,200';%> N/A ND <br /> � I <br /> Ozone/UV) Before = "As Extracted" from <br /> T ADVOX - Advanced Oxidation Unit ( <br /> MW-1 before transfer into holding tank. <br /> 2 After ADVOX treatment, sampled before Granular Activated Carbon Adsorption <br /> procedure. The GAC filter is both an adsorber,'i and a high surface area for <br /> completion of the ADVOX procedure. <br /> E N/A = No test sample drawn <br /> 3 The GAC phase of treatment is believed to combine the large carbon surface <br /> area to finish the ADVOX cycle, augmenting its 'standard adsorption role. <br /> Ozonated fluids will prevent micro-organisms from fouling the GAC to give it . <br /> longer usable life. <br /> 5 <br /> HOLT103 <br />