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31 October 2011 AGE-NC Project No. 99-0682 Page 3 of 9 highly reactive when making contact with organics such as those in gasoline range. Hydrogen peroxide is typically applied in a slightly more diluted form and can also be mixed with a simple acid such as muriatic or sulfuric acid to Hydrogen peroxide mixtures are 92Dgrally applied to the subsurface by either pressure injection, into fixed wells or borings, or by gravity feeding, which is generall conducted in a fixed well application only. Based on the nature and extent of the petroleum hydrocarbon impact at the site, hydrogen peroxide application appears to be a moderate to favorable remedial alternative for the site. Several wells installed at the site (in both the shallow and intermediate impacted zones), could be used immediately to apply the mixture across the site. Utilizing the site well network would forgo additional well installation costs and provide an adequate network to treat a significant portion of the residual hydrocarbon impact. Further, use of oxidants to subsurface soil and ground water ,, .�:�t t��5 pt,�•,, 3.1 .2. RegenOxTM RegenOxT"' a patented material distributed by Regenesis of San Clemente, California.The media is an advanced chemical oxidation technology that destroys contaminants through powerful, controlled chemical reactions. RegenOxT°" uses a solid alkaline oxidant that employs a sodium percarbonate complex with a multi-part catalytic formula to directly oxidize contaminants. The catalytic component generates a range of highly oxidizing free radicals that help rapidly and effectively destroy a wide range of target contaminants including both petroleum hydrocarbons and chlorinated compounds. Based on the site soil and ground water plume conditions, RegenOXTM is considered to be a low to moderately effective treatment technology for remediation of residual hydrocarbons at the site. Application of RegenOXTM would likely require a modest amount of new borings for injection points and could require several applications/boring advancement events before achieving site cleanup goals, driving up remedial costs and extending the life of the project. 3.2. ENHANCED AEROBIC BIO-REMEDIATION Bio-remediation is a term generally used to describe the destruction of contaminants by biological mechanisms. Certain indigenous or exogenous organisms can digest organic substances such as fuels or solvents, resulting in the production harmless bi-products such of Advanced CeoEnvironmental,Inc.