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' k`q KLEINFELDER <br /> A-2 7 Decontamination of Equipment <br /> To reduce the potential for cross-contamination, augers and associated equipment are steam <br /> cleaned prior to drilling each boring In addition, sampling equipment is cleaned with a <br /> ' tnsodium phosphate or non-phosphate detergent wash and rinsed with distilled water prior to <br /> collecting each soil sample <br /> i <br /> A-2.8 Soil Boring Closure and Cutting Disposal <br /> Soil bonngs are closed immediately after the collection and logging of soil samples Closure is <br /> accomplished by grouting the boring with a cement/bentonite slurry or as otherwise required <br /> Dnll cuttings will be placed in 55-gallon drums wrapped in plastic or spread around the boring <br /> and left on site for disposal by the site owner If requested, Kleinfelder can coordinate disposal <br /> of soil and water after analytical results are available <br /> M <br /> ' A-3 GROUNDWATER WELL INSTALLATION <br /> A-3 1 MonitorinLy Well Construction <br /> ' Construction details for shallow groundwater monitoring wells are as follows <br /> ' • The well casing are 2- or 4-inch inside diameter, flush threaded point, schedule 40 PVC <br /> pipe <br /> • The wells are constructed in 8- or 10-inch diameter borings <br /> ' Well screen sections are perforated with 0 010- or 0 020-inch factory-cut slots <br /> I <br /> ' 28699 E01 /ST03R627 Pae A-4 <br /> Copyn,hl 2003,Klemfelder,Inc April 22,2003 <br />