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N <br /> N <br /> RegenOxTM and ORC Advanced@ PILOT STUDY WORK PLAN <br /> APACHE PLASTICS (former) <br /> 2050 East Fremont Street, Stockton, California <br /> 1 .0. INTRODUCTION <br /> At the request of Fremont Plaza Investments, Advanced GeoEnvironmental, Inc. (AGE) has prepared <br /> this RegenOxTM and ORC Advanced® Pilot Study Work Plan (Work Plan) for the facility located at <br /> 2050 East Fremont Street, Stockton, California (site). <br /> The Work Plan was prepared in accordance with guidelines and recommendations established in the <br /> Technical and Regulatory Guidance for In Situ Chemical Oxidation of Contaminated Soil and <br /> Groundwater - Second Edition by the Interstate Technology Regulatory Council (ITRC) dated <br /> January 2005 and the Technical Report: Subsurface Injection ofln Situ Remedial Reagents (ISRRs) <br /> Within the Los Angeles Regional Water Quality Control Board Jurisdiction by the Insitu <br /> Remediation Reagents Injection Working Group dated September 2009. <br /> Site background information can be found in historical reports. Site location and plan maps are <br /> illustrated on Figures 1 and 2, respectively. Well construction details are included as Table 1 . <br /> Historical soil analytical results is included in Table 2. Ground water elevation and ground water <br /> monitoring analytical results, updated through the second quarter of 2010 are included as Tables 3 <br /> and 4, respectively. Previously submitted geologic and contaminant cross-sections; ground water <br /> contour maps and applicable boring logs are included in Appendix A. <br /> The Insitu Chemical Oxidation (ISCO) agent RegenOxTM is proposed to be injected near the <br /> screened intervals of ground water monitoring well MW-9 and soil vapor extraction well VEW-2, <br /> both located in the source area near the former underground storage tank (UST). Ground water <br /> monitoring well MW-9 is screened from 94 feetbelow surface grade (bsg) to 104 feet bsg, while soil <br /> vapor extraction well VEW-2 is screened from 34 feet bsg to 54 feet bsg. <br /> Pre-screening sample collection and analysis willbe performed to evaluate the feasibility of coupling <br /> ISCO with Oxidation Release Compound Advanced ® (ORC Advanced), an aerobic enhanced <br /> bioremediation technology. The ISCO agent RegenOxTM provides direct chemical oxidation to <br /> reduce high concentrations up to four weeks; several sets of injections are required to reduce high <br /> concentrations of contaminants typical of the site. ORC Advanced® with its controlled release <br /> technology has proven to be effective for up to 12 months and when coupled with RegenOxTM can <br /> provide a cost-effective treatment remedy. Soil samples are proposed to be collected from total depth <br /> of one injection point near well VEW-2 and one injection point near well MW-9 for the evaluation <br /> of background biological degradation organisms and other natural attenuation factors. <br /> Advanced GeoCnvironmental, Inc. <br />