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15 December 2003 <br /> AGE-NC Project No. 95-0109 <br /> Page 4 of 6 <br /> 3.4. 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 /> 4.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of California <br /> Registered Geologist. Procedures for well installations,well development and ozone sparging are <br /> described below. <br /> 4.1. DRILLING AND SAMPLING <br /> Three Ozone injection wells will be installed to a depth of 70 feet bsg utilizing a truck-mounted, <br /> hollow-stem drill rig and 8-inch diameter hollow-stem augers. Soil cuttings and rinseate generated <br /> during drilling activities will be containerized in properly labeled DOT-approved 55-gallon drums, <br /> and stored on-site in an area lacking public access.Disposal alternatives for rinseate and stockpiled <br /> 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 State of California Department of Health <br /> Services (DHS)-certified laboratory for the following constituents: <br /> • Total petroleum hydrocarbons as gasoline (TPH-g) in accordance with EPA Method 8015 <br /> Modified; <br /> • Benzene, toluene, ethylbenzene and total xylene (BTEX compounds) and methyl tertiary <br /> butyl ether(MTBE) in accordance with EPA Method 8020; <br /> • 1,2-Dichloroehene(1,2-DCA) by EPA method 8260 Modified. <br /> Laboratory reports for soil analysis, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain of custody documentation will be presented in a report with <br /> findings and recommendations. <br /> Advanced GeoEnviron mental,Inc. <br />