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18 November 1999 <br /> AGE-NC Project No. 97-0327 <br /> Page 5 of 9 <br /> • BTEX compounds and methyl tert-butyl ether (MTBE) in accordance with EPA Method <br /> 8020; and <br /> • Fuel oxygenated compounds including MTBE, TBA, DIPS, ethyl tertiary-butyl ether <br /> (ETBE) and tertiary-amyl methyl ether (TAME) by EPA Method 8260 Modified. <br /> Laboratory reports for the 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. MONITORING WELL INSTALLATION AND DEVELOPMENT <br /> Three ground water monitoring wells will be installed at the site to further assess petroleum <br /> hydrocarbon impacts to soil and shallow ground water. Proposed monitoring well locations are <br /> illustrated on Figure 2. Well locations are proposed to provide definition of the lateral and vertical <br /> extent of adsorbed and dissolved petroleum hydrocarbons. Monitoring of the wells should provide <br /> data to determine if the dissolved plume is migrating or stable. <br /> Following well installation activities, each well will be developed to maximize water flow and <br /> minimize the amount of fine-grained sediment drawn into the well during pumping or bailing. <br /> .. Procedures for well installation and development are presented in Sections 4.3 and 4.4, respectively. <br /> w 3.4. GROUND WATER SAMPLE COLLECTION AND ANALYSIS <br /> Ground water monitoring and sampling activities for each newly installed ground water monitoring <br /> — well will be conducted on a quarterly basis unless an alternate schedule or suspension of monitoring <br /> is approved by the PHS-EHD. Ground water monitoring activities will include recording depth to <br /> ground water measurements and collection of ground water samples. Ground water sample collection <br /> procedures are described in Section 4.6. <br /> Ground water samples will be analyzed by a DHS-certified Iaboratory for the following constituents: <br /> • TPH-g and TPH-d by EPA Method 8015 Modified/5030; <br /> • BTEX compounds and MTBE by EPA Method 602; <br /> • MTBE, DIPE, TAME, ETBE and TBA by EPA Method 8260. <br /> Advanced GeoErniron mental.Inc. <br />