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26 November 2001 <br /> AGE-NC Project No. 98-0492 <br /> Page 3,of 7 <br /> • Between 5 and to.feet east of soil boring P-5: <br /> The proposed ground water-monitoring well borings will be advanced to.approximately 30 feet bsg <br /> utilizing atruck-mounted, hollow-stem drill rig.equipped.with 8.257inch diameter hollow-stem , <br /> au.gers:Soil samples will-be-collected at five-foot'interyals beginning at five feet bsg and extending . <br /> to the total depth of each boring. Total depths of borings may vary according to site conditions <br /> encountered during.drilling. <br /> Selected soil samples will be analyzed.by a State of California Department of Health Services <br /> (DHS)-certified laboratory for the following constituents: <br /> Total petroleum hydrocarbons quaritified asasoline and diesel (TPH-g and TPH-d) in . <br /> accordance with-EPA Method 8015 Modified;. <br /> ..Volatile organic compounds including benze e, toluene, ethylbenzene and total xylenes <br /> (BTEX)and methyl tertiary butyl ether(MTBE) in accordance with EPA Method 8020;and . <br /> • Fuel oxygenated compounds including MTBE,d i-isopropyl ether (DIPE), ethyl tertiary-butyl <br /> ether (ETBE}, tertiary-amyl methyl : eth r (TAME), tertiary butanol (TBA), <br /> 1;2-dichloroethane (1,2-DCA) and ethylene dibromide (EDB) by EPA Method 826.0 <br /> Modified: <br /> Laboratory reports for the soil analyses,testing methods,.laboratory quality assurance/quality control <br /> (QA/QC) reports, .and sample chain of custody docurrentation will be presented in a report with <br /> findings and recommendations: <br /> 3.3. MONITORING WELL INSTALLATION, DEVELOPMENT-AND SURVEY <br /> Following installation, each well will-be developed to maximize wafer flow and minimize the <br /> amount of fine=grained sediment drawn into the well du 'ng pumping or bailing:After development, <br /> the top of each well casing(well head)will be surveyed to determine its elevation relative to mean <br /> sea level.Procedures for well installation,development 00 survey are presented in Sections 4.2.and <br /> 4.3.,respectively.. <br /> . 3.4. . GROUND WATER'SAMPLE COLLECTION AND ANALYSIS <br /> Ground water monitoring and sampling activities fore ch newly installed ground water monitoring <br /> well will be conducted on a quarterly basis unless an alt mate schedule or suspension of monitoring <br /> Advanced GeoEnvironmentai,Inc. <br />