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' kTJ KL ElNFELDER <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 deter ent wash and rinsed with distilled water nor to <br /> P Pg P <br /> collecting each soil sample <br /> A-2.8 Soil Boring Closure and Cuttinp,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 /> Drill cuttings will be placed in 55-gallon drums wrapped in plastic or spread around the boring <br /> tand left on site for disposal by the site owner If requested, Klemfelder can coordinate disposal <br /> of soil and water after analytical results are available <br /> ' A-3 GROUNDWATER WELL INSTALLATION <br /> A-3.1 Monitoring 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 /> 28699 E01 /ST03R627 Page A-4 <br /> Copyright 2003,Kleinfelder,Inc April 22,2003 <br /> 1 � <br />