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1 <br /> 1l <br /> 05 November 2010 <br /> AGE-NC Project No. 96-0254 <br /> Page 3 of 6 <br /> compacted and resurfaced with asphalt. The proposed ozone injection distribution system <br /> and ozone generator locations are illustrated in Figure 2. <br /> 2.4. IN-SITU OZONE SPARGING PILOT TEST <br /> Following installation of ozone injection wells, a 26-week(6 months)in-situ ozone injection <br /> (101) pilot test is proposed at the site. The results of the 101 pilot test combined with ground <br /> water data collected during the pilot test will determine the feasibility of ozone injection as <br /> a final remediation alternative at the site. Procedures for the 101 pilot test are presented in <br /> Section 3.4. <br /> 2.5. REPORT PREPARATION <br /> Upon completion of well installation and the 26-week 101 pilot test, a report will be prepared <br /> presenting the findings of the investigation. The report will include a description of the work <br /> performed, the results of soil and ground water analyses, and the results of the 101 pilot <br /> test. Conclusions and applicable recommendations will be included in the report. The <br /> report will be in a format acceptable to the EHD and the CVRWQCB, and will be reviewed <br /> and signed by a California Professional Geologist. <br /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of <br /> a California Professional Geologist. Procedures for well installations, well completion and <br /> ozone injection are described below. <br /> 3.1. DRILLING AND SAMPLING <br /> A total of ten (10) ozone injection wells will initially be installed to depths of 20 feet bsg <br /> utilizing a truck-mounted, hollow-stem drill rig equipped with 8.25-inch diameter <br /> hollow-stem augers. Soil cuttings and rinseate generated during drilling activities will be <br /> containerized in properly labeled Department of Transportation(DOT)-approved 55-gallon <br /> drums, and stored on-site in an area lacking public access. Disposal alternatives for soil <br /> and rinseate will be selected based on results of a laboratory analysis. <br /> In selected borings,soil samples will be collected at five-foot intervals for logging purposes <br /> and limited soil analysis, beginning at a depth of 5 feet bsg. Relatively undisturbed soil <br /> samples will be collected using a California modified split-spoon sampler fitted with 2-inch <br /> Advanced Geo Environmental,Inc. <br />