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05 September 2002 AGE-NC Project No. 01-0887 Page 5 of 9 installed in each soil boring. It is anticipated that the wells will be screened from approximately 4 to 19 feet bsg. No sooner than 12 hours after the well installations,the wells will be developed to maximize water flow into the well and minimize the amount of fine-grained sediment drawn into the well during pumping or bailing. Procedures for well installation and development are presented in Sections 4.2 and 4.3, respectively. 3.4. GROUND WATER MONITORING PROGRAM Ground water monitoring and sampling of the four monitoring wells (MW-1, MW-2, MW-3, and MW-4) will initially be conducted on a quarterly basis for one year(four sampling events). Ground water monitoring activities will include recording depth to ground water measurements and collection of ground water samples. Ground water sample collection procedures are described in Section 4.4. Ground water samples will be analyzed by a State of California DHS-certified laboratory for the following constituents: • TPH-g in accordance with EPA Method 8015 Modified/5030; and • BTEX and fuel oxygenating compounds including MTBE,DIPE,ETBE,TAME,TBA,EDB and 1,2-DCA by EPA Method 8260B. Laboratory reports for groundwater analyses, testing methods, laboratory quality assurance/quality control(QA/QC) reports, and sample chain of custody documentation will be presented in a report with the findings and recommendations. 3.5. REPORT PREPARATION Upon completion of field work and receipt of final laboratory analysis, a report will be prepared presenting the findings of the investigation. The report will include a description of the work performed and the results of the sampling and the laboratory analyses. In addition, the report will include a ground water elevation contour map, maps and cross-sections showing the horizontal and vertical distribution of petroleum hydrocarbon impacted soil and ground water and, if possible, the estimated volume of the contaminant plume and mass of the contaminants. Also, conclusions and applicable recommendations will be included in the report. Additionally, following each quarterly Advanced GeoFmvironmenlal,lne.