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21 May 2007 <br /> AGE-NC Project No. 04-1045 <br /> Page 3 of 7 <br /> • Volatile aromatic hydrocarbons: benzene, toluene, ethyl benzene and total xylene (BTEX) J <br /> in accordance with EPA Method 8020, and <br /> • Oxygenated compounds:di-isopropyl ether(DIPE),ethyl tertiary-butyl ether(ETBE),methyl <br /> tertiary-butyl ether (MTBE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), <br /> methanol, ethanol, ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) in / <br /> accordance with EPA Method 8260. <br /> Laboratory reports of 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 <br /> i <br /> 2.3. MONITORING WELL INSTALLATION, DEVELOPMENT AND SURVEY <br /> The pilot borings will be completed as single-level groundwater monitoring wells screened from <br /> e55 feet to 65 feet bsg and 110 feet to 120 feet bsg. Following installation, each well will be Sjp �5 <br /> r <br /> developed to maximize water flow and minimize the amount of fine-grained sediment drawn intoSI <br /> the well during pumping or bailing,and the top of each existing and newly installed well casing(well 7 <br /> head) will be surveyed to determine its elevation relative to mean sea level. Procedures for well <br /> installation, development and survey are presented in Sections 3.2. and 3.3., respectively. <br /> 2.4. GROUND WATER SAMPLING AND ANALYSIS <br /> Following the installation of the new monitoring wells, ground water monitoring and sampling <br /> activities will be conducted for all the monitoring wells on a quarterly basis for a minimum of one <br /> year (four sampling events); monitoring activities will include recording depth to ground water <br /> measurements and collection of ground water samples for laboratory analysis by a DHS-certified <br /> laboratory for the analytes noted in Section 2.2. Ground water sample collection protocols are <br /> described in Section 3.4. <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 quarterly <br /> reports with findings and recommendations. <br /> 2.5. PREPARATION OF REPORT OF FINDINGS <br /> Following each ground water monitoring event, a quarterly report will be prepared presenting the <br /> findings. Each report will include a description of work performed and the results of the ground <br /> Advanced GeoEnviroamental,Inc. <br /> i <br />