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06 January 2003 <br /> AGE-NC Project No. 02-0896 <br /> Page 4 of 7 <br /> The soil boring will be advanced to a depth of approximately 70 feet bsg or until ground water is <br /> encountered. Soil samples will be collected from the boring at a minimum of five-foot intervals. <br /> Procedures for advancement of soil borings and soil sampling are presented in Section 4.1. <br /> Up to six soil samples from the initial boring will be selected for laboratory analysis. Sol samples <br /> for laboratory analysis will selected based on visual observations of petroleum hydrocarbon impact, <br /> organic vapor meter(OVM)readings,changes in lithology,and/or at the capillary fringe. Select soil <br /> samples will be analyzed by a State of California Department of Health Services (DHS)-certified <br /> laboratory for the following constituents: <br /> • BTEX by EPA Method 8260B; <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) by EPA Method 8015 <br /> Modified; <br /> • Fuel oxygenating compounds including di-isopropyl ether(DIPE), ethyl tertiary-butyl ether <br /> (ETBE), MTBE, TAME, TBA, ethanol, and methanol by EPA Method 8260B; and <br /> • Lead scavenger compounds ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) <br /> by EPA Method 8260B. <br /> Laboratory reports for ground water analyses,testing methods,laboratory quality assurance/quality <br /> control (QA/QC)reports, and sample chain of custody documentation will be presented in a report <br /> with the findings and recommendations. <br /> 3.3. GRAB GROUND WATER SAMPLE COLLECTION AND ANALYSIS <br /> A grab ground water sample will be collected from soil boring and submitted for laboratory analysis. <br /> The grab ground water sample will be collected at the first encountered water-bearing zone utilizing <br /> hydropunch-equivalent sampling techniques. Grab ground water sample collection procedures are <br /> presented in Section 4.2. <br /> Groundwater samples will be analyzed by a State of California DHS-certified laboratory for the <br /> following constituents: <br /> • BTEX by EPA Method 8260B; <br /> • TPH-g by EPA Method 8015 Modified; <br /> • Fuel oxygenating compounds including DIPE, ETBE, MTBE, TAME, TBA, ethanol, and <br /> methanol by EPA Method 826013; and <br /> Advanced GeoEnvironmental,Inc. <br />