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�+w r <br /> ry <br /> • sw.0 <br /> BIO NATIONAL CORPORATION <br /> The enclosed reports (summarized here) indicate complete success with both <br /> chlorinated and petroleum hydrocarbons (Before = Before Oxidation Treatment); <br /> TEST METHOD DP'I'ECTED COld1`AMINANT BEFORE AgT3R <br /> EPA 5030/8010 ~� _��` � ugm/L <br /> Methylene Chloride 0.71 ND <br /> 1,1,1-Trichloroethane 1.7 ND <br /> Tetrachlorcethylene 5.2 <br /> ND <br /> EPA 5030/8020 Benzene <br /> Toluene 14 ND <br /> p-Xylene 15 ND <br /> 3.5 ND <br /> m-Xylene 2.9 ND <br /> o-Xylene 1.6 ND <br /> IsopropyIbenzene 7.6 ND <br /> TPH (Gasoline) 1,200 ND <br /> UNRELATED DBCP TEST IN <br /> EPA 504 MODESTO <br /> Dibromochloropropane 0'5' ND <br /> INITL4fiI0N OF <br /> GROUNDWATER EXTRACTION AND TREATMENT - The groundwater <br /> and..lioating product w;" be extracted from MW-I by <br /> pro <br /> via�d by Diversified Well Products, Inc. We plan iodirect skimmer <br /> flows <br /> either in,,:, <br /> s single 6,000 gallon biotreatment tank at the rate r-f 10 <br /> or into a 500 gallon recycling tank, if flow rates are within the treatment <br /> range of the AOU alone. This tank will be ve <br /> filter. nted through a carbon air <br /> Biological 'treatment is to biodegrade the floating gasoline and solvent <br /> functioning <br /> componentu. Lab;-)rator y samples indicated indigenous organisms began <br /> in tho water when the floating layer was penetrated and <br /> aeration occurred. <br /> Water, drawn from below the floating product in the collection/bio-treat- <br /> ment tank, and/or to a 500 gallon surge tank to continue biodegradation <br /> as the water is drawn to the AOU and treated for final disposal. The <br /> AOU's Ozone/uv/carbon procedure will destroy residual microbes and <br /> oxidize remaining contaminants. (NOTE: The system has the flexibility to <br /> Utilize the AOU as a pre-trl)atment before biodegradation, but the amount <br /> Of' floating product precludes this as <br /> time. the most viable alternative at this <br /> We will'"draw samples of extracted, bio-treated and ozonated extractions <br /> daily for one week, every other day for <br /> two weeks, weekl <br /> thereafter. These will be submitted for laboratory analysis andel reported <br /> to you as directed. On site air pollution control and water <br /> quality <br /> readings can be made available, as you require. We will maintain pH and <br /> Oxidation Reduction Potential (ORP) records as well. <br /> 2 <br /> HOLT910 <br />