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Groundwater samples will be collected with a Teflon bailer equipped with a ball- <br /> check valve, and sample containers will be filled directly from the bailer as soon after <br /> purging as possible. Samples will be analyzed for'[?H and BTX&E. <br /> All bailers used for purging and/or sampling will be decontaminated before and after <br /> sampling each well. The equipment will be rinsed with deionized water,cleaned with an <br /> Alconox (brand-name) solution, and then ring-d three times with deionized water. The <br /> nylon-hoisting line on the bailer will be simil-. y rinsed prior to sampling the next well. <br /> Also, sounders used for measuring water l:.vels will be similarly decontaminated. <br /> Sampling personnel will wear outer gloves while purging, and disposable inner gloves <br /> while filling sample containers to prevent cross-contamination. <br /> Thickness of possible free product will be monitored by using an electronic interface <br /> probe with a + or- 0.01 ft- detection limit. This will be performed at the completion, 7 <br /> days after completion, and 14 days after completion of each well. <br /> 3.7 Disposal Plans For Soil And Water <br /> All soil from boring operations, with the exception of soil submitted for laboratory <br /> analysis, will be containerized on-site::in. well-specific, DOT-approved 55-gallon steel <br /> drums. Similarly, all purged water from well development and pre-sampling purging will <br /> be containerized on..site in DOT-approved 55-gallon steel drums.• Pro r lii bls�-will be <br /> affixed to each drum and labeled fully. <br /> 3.8 Field And Laboratory QA/QC <br /> ' Four formats are used in the field to document groundwater sampling and boring <br /> installation: <br /> - Field log book; <br /> - Field data sheets; <br /> - Sample labels; and <br /> - Chain-of-custody form. <br /> 3.81 Field Log Book <br /> All data is initially recorded into a field log book while in the field. Prior to going into <br /> the field, the book is prepared for data entry related to boring and monitoring well <br /> installation, water-level measurements, air-monitoring data, well-purging volumes, <br /> temperature/pWspecific conductivity measurements, and sample-collection information <br /> including sample ID, date and time, location and client, analysis and method, samplers' <br /> initials, and laboratory. Also,any other pertinent information, such as conversations with <br /> clients or descriptions of anomalous conditions, are entered. <br /> 3.5.2 Field Data Sheets <br /> Field data sheets are filled out in the field for organization and documentation of <br /> relevant data. These data sheets include: water level data sheet, groundwater sampling <br /> field notes, air monitoring data sheet, and a geologic boring/well completion log. <br /> -11- <br /> 1 <br /> 172.32.R1 318191 <br />