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• 28 February 2000 <br /> AGE-NC Project No 00-0697 <br /> Page 4 of 6 <br /> • Boring 2 (B2) will be located ten feet east of the regular gasoline UST <br /> • Boring 3 (B3) will be located ten feet east of the unleaded gasoline UST <br /> • Boring 4 (B4) will be located 15 feet southwest of the unleaded gasoline UST and 15 feet <br /> northwest of the regular gasloine UST <br /> Proposed probe boring locations are illustrated in Figure 2 <br /> The proposed probe boring locations may be modified due to field observations or additional borings <br /> may be advanced with approval by the PHS-EHD Each proposed boring will be advanced to 15 feet <br /> bsg or until the field observations (odor and staining), and field screening using an organic vapor <br /> meter(OVM) indicate that petroleum hydrocarbon vapor is not present in the soil samples screened <br /> from two consecutive five-foot intervals <br /> Soil samples will be collected from continuous cores beginning at 2 feet bsg extending to the total <br /> boring depths Field procedures for advancement of bonngs and collection of soil samples are <br /> • presented in Section 4 1 1 <br /> Selected soil samples from each probe boring will be submitted for laboratory analysis with <br /> concurrence of the PHS-EHD The selected soil samples will be analyzed by a State of California <br /> Department of Health Services (DHS)-certified laboratory for the following constituents <br /> • TPH-g by EPA Method 8015 Modified, <br /> • BTEX and MTBE by EPA Method 8020 <br /> • Fuel oxygenates including MTBE, tertiary-butyl alcohol (TBA), di-isopropyl ether (DIPE), <br /> ethyl tertiary-butyl ether (ETBE) and tertiary-amyl methyl ether (TAME) by EPA Method <br /> 8260M <br /> • Total lead by EPA Method 6010 <br /> Laboratory reports for soil analyses, 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 /> 3 3 GRAB GROUND WATER SAMPLE COLLECTION AND ANALYSIS <br /> iGrab ground water samples will be collected from each probe boring using a Geoprobe water <br /> Advanced GeoEnvironmental,Inc <br />