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LEVINE•FRICKE <br /> elevations will be measured by a Licensed California Surveyor and <br /> the depths to static water will be measured in each well. The <br /> wells will be developed by purging five to ten well volumes of <br /> water from each well . When the pH, ' conductivity, and sediment <br /> content of the purged water have stabilized, samples will be <br /> collected using a clean Teflon bailer. The samples will be <br /> placed into 40-m1 vials free from trapped air, labelled, and <br /> placed in a chilled ice chest for delivery to a State-certified <br /> laboratory. Strict chain-of-custody protocols will be followed <br /> during sample handling. <br /> Purged water generated during well development will be contained <br /> in drums on site until analytical results are available. <br /> Task 4 : Laboratory Analyses <br /> It is anticipated that, in addition, to the four ground-water <br /> samples, two soil samples from eachlboring will be submitted to <br /> the laboratory for chemical analysis. The soil samples will be <br /> analyzed for total petroleum hydrocarbons (TPH) and for the fuel <br /> hydrocarbons benzene, toluene, ethylbenzene, and xylenes (BTEX) . <br /> The analyses will be performed by Med-Tax Associates Laboratory <br /> in Pleasant Hill, California, using'IEPA Methods 8015 and 8020. <br /> The sample preparation method will be conducted in accordance <br /> with EPA Method 3500. i <br /> f <br /> Task 5: Data Evaluation and Report Preparation <br /> The field and laboratory data collected will be evaluated to <br /> assess the ground-water quality andlflow gradient. The need for <br /> further monitoring and possible remediation will also be <br /> evaluated. A report which summarizes the well installation, <br /> analytical methods and results, and data reduction will be <br /> prepared. This report will includela summary and conclusions <br /> with recommendations; lithologic logs of the wells and laboratory <br /> data sheets will also be included. <br /> Task 6: Project Management and Meetings <br /> This task includes scheduling and coordinating subcontractors, <br /> project and budget review, and telephone conversations with <br /> Sunboro. The project manager for this project will be John <br /> Sturman, Project Geotechnical Engineer. The field operations <br /> will be directed by Charles Pardini; Staff Geologist. Tom <br /> Johnson, R.G. and Principal Hydrogeologist, will provide overall <br /> project review. <br /> f <br /> -3- <br /> I� <br />