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SOIL SAMPLING TECHNIQUES <br /> QUALITY ASSURANCE AND QUALITY CONTROL <br /> To prevent crass contamination between samples, sampling equipment was washed prior to each <br /> sampling using the "three bucket" wash system This system Involves <br /> 1 Washing the equipment In a detergent and water solution, <br /> 2 Rinsing the equipment in tap water, and <br /> 3 Rinsing the equipment in distilled water <br />' To maintain the integrity of the samples, all samples were <br /> 1 Collected in 6-inch brass sample tubes or glass sample jars, <br /> 2 Sealed with foil and TeflonTm caps, <br /> 3 Wrapped with duct tape, <br /> 4 Properly labeled and listed on completed custody forms, <br /> 5 Placed in plastic bags, ' <br /> 6 Placed in a cooler and chilled on ice, and <br /> 7 Delivered to a State-certified laboratory <br /> ' All soil samples were refrigerated and stored at the laboratory for 30 days in case subsequent <br /> analyses were required <br /> r <br /> 0 <br /> F01ACA1 GROUNDWATER <br /> ❑�❑ TECHNOLOGY - <br />