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10 June 2008 AGE-NC Project No. 97-0312 Page 11 of 11 gaseous ozone into an equal weight of soil and water residing in a laboratory cleaned,sealable and controllable beaker for bench scale treatment.Ozone-enriched air will be continually delivered into the matrix mixture at a rate not to exceed 100 ml per minute.The ozone will be delivered by teflon or chemical resistant tubing. An aliquot-of 20 ml of water will be collected on a daily basis for analysis of Cr".,ozone,and pH. Additional water QA/QC spike will be included in the Ozone BST;in conjunction with blanks and analysis QA/QC: Upon termination of the Ozone BST,the remaining water will be fully re-analyzed a final time to determine the concentration increases of Cr" and to measure the concentrations of the additional analytes(i.e.,metals and general parameters)outlined in Section 3.5.L,The Ozone BST water will be held for one week,in order to analyze the chemical data and determine if additional analysis will be required to assess whether at return to a steady state of,concentration has been achieved for concentrations of metals which are responsible for water quality degradation. The Ozone BST can include a stand alone air-sparge reactor-vessel,bench scale analysis will be performed on the soil/water matrix with air. to determine if significant or total petroleum hydrocarbons and fuel additive destruction or conservation occurs.The Ozone BST will be prepared by the laboratory and evaluate the effect of the ozone which might degrade water quality;which will be signed by a geo-chemist familiar with soil chemistry. 3.6. EQUIPMENT DECONTAMINATION. All sampling tools used for sample collection will be thoroughly washed with a solution of Alconox and rinsed with clean water prior to use. All down-hole drilling and sampling.equipment will be pressure washed prior to starting each boring. Advanced GeoEnvironmental,Inc. I I