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I 13 May 2010 AGE-NC Project No. 07- 1529 Page 6 of 11 2.2 . 1 . Aerobic Bioremediation Application and Reaction ORC Advanced(M is usually delivered to the subsurface by pressure injection using direct push methods. Injection of ORC Advancedg through wells may be achieved, however the well may experience residual product and required cleaning. ORC Advanced® is supplied to the environment (soil and ground water) as liquid slurry which interacts with ground water and then releases a patented formulation of phosphate-intercalated magnesium peroxide . The phosphate-intercalated magnesium peroxide release supplies up to 17% of its weight as molecular oxygen. The available oxygen is then utilized by indigenous microbial populations to naturally degrade contaminants into harmless end products such as carbon dioxide and water. According to the Regenesis MSDS, ORC Advanced® has the degradation product of calcium hydroxide, an inorganic compound that does not cause biotic degradation or have a potential for bioaccumulation. However, the weak soluble precipitates carbonate and sulfate may be produced through abiotic degradation, pH in the injection area is typically raised above 10, but is rapidly neutralized in dilution. The ORC Advancedg MSDS also includes information regarding the breakdown and reactivity of ORC Advanced® is included in Appendix C. 2.2.2 . Aerobic Bioremediation Reduction Feasibility and Background Sample Collection Existence of a microbial population at the site is currently unknown. AGE proposes to collect representative soil samples from proposed RegenOxTM injection borings near wells MW-9 and VEW-2 and analyzed by a CDPH-certified laboratory for microbial and physicochemical properties as follows: • pH and SC; • Chloride, phosphate, nitrate, nitrite, sulfate, dissolved iron (soluble iron), manganese, potassium calcium, sodium, sulfide and carbon dioxide; a Alkalinity including carbonate, bicarbonate and hydroxide; • Total organic content (TOC), chemical oxidation demand (COD), biological oxygen demand (BODS) and total oxygen demand (TOD); • Methane and ethane/ethene; • Oxygen reduction potential (ORP), dissolved oxygen (DO), pH, electrical conductivity, total hardness ; • Heterotrophic organisms and selective (gasoline/diesel) degrader organisms; Advanced GeoEnvironmental, Inc.