ARCHIVED REPORTS_XR0007453 CASE 1

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' k'q KLEINFEL DER To reduce the potential for introducing contaminants into the samples, the drive tip, galvanized pipe, and other equipment used for sample collection are steam cleaned and/or washed with ' trisodium phosphate or non-phosphate detergent solution and double rinsed with distilled water prior to use The sample probe and filters are cleaned in TSP solution and rinsed with methyl alcohol followed by a distilled water rinse prior to use New, factory-sterilized syringe needles, ' 0-rings, septums and sample tubes are used for each sample B-2.6 Sample Handling ' After labeling, the sample is immediate) stored in an iced cooler for transport to Kleinfelder's g P Y p office sample control or to the analytical laboratory A Kleinfelder chain-of-custody form ' accompanies the cooler The chain-of-custody form includes Klelnfelder'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 matnx (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 B-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 trisodium phosphate or non-phosphate detergent wash and rinsed with distilled water prior to collecting each soil sample ' -B-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/bentomte 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, Klemfelder can coordinate disposal ' of soil and water after analytical results are available ' B-3 GROUNDWATER WELL INSTALLATION B-3.1 Monitoring 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 20-1417-16 804/ST02R038 Page B-3 02002 Klonfelder,Inc June 7,2002