ARCHIVED REPORTS_XR0007451 CASE 1

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' h'q KL E IN F E L D E R alcohol followed by a distilled water rinse pnor to use New, factory-sterilized synnge needles, O-nngs, septums and sample tubes are used for each sample ' A-2.6 Sample Handling After labeling, the sample is immediately stored in an iced cooler for transport to Klelnfelder's office sample control or to the analytical laboratory A Kleinfelder chain-of-custody form accompanies the cooler The chain-of-custody form includes K leinfelder's name, address and telephone number, the employee number of the individual who performed the sampling, the sample numbers, the date and time the samples were collected, the number of containers each ' sample occupies, the sample matrix (soil or water) and the analyses for which the samples are being submitted, if any The chain-of-custody form is signed by each person who handles the samples, including all Kleinfelder employees and the receiving employee of office sample ' control or the analytical laboratory when the samples are delivered A-2.7 Decontamination of Equipment To reduce the potential for cross-contamination, augers and associated equipment are steam cleaned prior to drilling each boring In addition, sampling equipment is cleaned with a ' tnsodium phosphate or non-phosphate d etergent w ash and rinsed w ith d istilled w ater p nor t o collecting each soil sample A-2.8 Soil Boring Closure and Cutting Disposal Soil borings are closed immediately after the collection and logging of soil samples Closure is ' accomplished by grouting the boring with a cement/bentonite slurry or as otherwise required ' Drill cuttings will be placed in 55-gallon drums wrapped in plastic or spread around the boring and left on site for disposal by the site owner If requested, Kleinfelder can coordinate disposal of soil and water after analytical results are available 1 A-3 GROUNDWATER WELL INSTALLATION A-3.1 Monitorin_Z Well Construction Construction details for shallow groundwater monitoring wells are as follows • The well casing are 2- or 4-inch inside diameter, flush threaded joint, schedule 40 PVC pipe 0 The wells are constructed in 8- or 10-inch diameter borings • Well screen sections are perforated with 0 010- or 0 020-inch factory-cut slots • The wells are generally screened from 5 feet above to 15 feet below first groundwater 18748 T02/ST02R795 Page A-3 ' ®2002 Kleinfelder,Inc December 3,2002