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�. r,► <br /> 04 January 2005 <br /> AGE-NC Project No. 96-0235 <br /> Page 3 of 5 <br /> The proposed ozone injection wells will be screened through the water table and ground water,into <br /> areas of known petroleum-impacted ground water. Proposed well locations are depicted in Figure 2. <br /> 2.3. IN-SITU OZONE SPARGING PILOT TEST <br /> Following installation of ozone injection wells, a 24-week (6 months) in-situ ozone sparge (IOS) <br /> pilot study is proposed at the site; the results of the IOS pilot test will provide data to calculate an <br /> effective radius of influence and determine the feasibility of IOS as a remediation alternative. <br /> Procedures for the IOS pilot test are presented in Section 3.3. <br /> 2.4. REPORT PREPARATION <br /> Upon completion of well installation and the 24-week IOS pilot study, 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 grab ground water analysis, and the results of the IOS pilot study. <br /> Conclusions, applicable recommendations, maps and cross-sections will be included in the report. <br /> The report will be in a format acceptable to the SJEHD and the CVRWQCB, and will be reviewed <br /> and signed by a California Registered Geologist. <br /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Registered Geologist. Procedures for well installations, well development and ozone sparging are <br /> described below. <br /> 3.1. DRILLING AND SAMPLING <br /> A total of ten Ozone injection sparge wells will be installed to a depth of 35 feet bsg utilizing a <br /> truck-mounted, hollow-stem drill rig and 8-inch diameter hollow-stem augers. Soil cuttings and <br /> rinseate generated during drilling activities will be containerized in properly labeled DOT-approved <br /> 55-gallon drums, and stored on-site in an area lacking public access. Disposal alternatives for <br /> rinseate and stockpiled soil will be selected based on results of a laboratory analysis. <br /> Soil samples will be collected at five-foot intervals for logging purposes, beginning at a depth of <br /> 5 feet bsg. Selected soil samples may be analyzed by a DHS-certified laboratory for the following <br /> constituents: <br /> Advanced GeoEnvironmental.Inc. <br />