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. 26 October 2000 <br /> AGE-NC Project No 95-0128 <br /> Page 7 of 10 <br /> • Volatile aromatic hydrocarbons benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> in accordance with EPA Method 8020, and <br /> • Oxygenated compounds di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), <br /> MTBE, tertiary-amyl methyl ether (TAME) and tertiary butanol (TBA) in accordance with <br /> 8260, >espectively <br /> Laboratory reports for ground water analysis, testing methods, laboratory quality assurance/quality <br /> control (QA/QC) reports, and sample chain of custody documentation will be presented in quarterly <br /> reports <br /> Ground water treatment operational parameters will be monitored at a minimum of once a week to <br /> monitor cleanup progress and adherence to discharge requirements The ground water treatment <br /> system will be maintained on a weekly basis according to manufacturers recommendations <br /> 4.0. FIELD PROCEDURES <br /> iAll field procedures will be overseen by an AGE representat>vc under the supervision of a Califomia <br /> Registered Geologist Procedures for the well installation, well development, dedicated low-flow <br /> pump installation, dedicated pressure transducer installation and pump and treat procedures are <br /> described below <br /> 41 PILOT SOIL BORING <br /> Ten pilot soil borings will be advanced at the site to a maximum depth of 40 feet bsg utilizing a <br /> truck-mounted hollow-stem drill rig Nine soil pilot borings will be established with 8 25-inch <br /> diameter hollow-stem augers to install ground water monitoring wells One soil pilot boring will be <br /> established with 15-inch diameter hollow-stem augers for the ground water extraction well <br /> construction Cuttings generated during drilling will be placed in DOT-approved 55-gallon drums <br /> Rinseate will be containerized In properly labeled DOT-approved 55-gallon drums, and stored on- <br /> site In an area lacking public access Disposal alternatives will be evaluated based on results of soil <br /> and water analysis <br /> 42 WELL COMPLETION <br /> The 8 25-Inch diameter pilot borings will be single-completed as a ground water monitoring wells <br /> utilizing 2-inch diameter schedule 40 polyvinylchloride (FVC) 0 020-inch slotted well screen and <br /> Advanced GeoEnvironmental,Inc <br />