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Soil Sampling Field Standard Operating Procedure <br /> SWE-FSOP-405;Revision 1 Ahtna Southwest Environmental Operations <br /> Hand Trowel—A small scoop-shaped device, commonly stainless steel, operated with one hand to <br /> collect surface soil and place it into a sampling container. <br /> Hollow stem auger—An auger with a hollow center designed to allow collection of soil samples using <br /> various tools without removing the auger. <br /> Liner—A cylinder, generally made of plastic, brass, stainless steel, or Teflon placed inside a split spoon <br /> or auger to collect soil samples. <br /> [PFAS Project]: For purposes of PFAS sampling, liners will be made of PVC, acetate or equivalent <br /> non-PFAS material. <br /> Incremental Sampling Methodology(ISM)— A sampling method used to determine an average <br /> concentration of contaminants representative of soil within a defined area (decision unit)typically used <br /> in surface soil, stockpiles, and excavation pits. <br /> Sampling Unit—A volume of soil from which increments are collected to determine an estimate of the <br /> mean concentration for that volume of soil. <br /> Shelby tube—A cylindrical sampling device, generally made of steel, driven into the subsurface soil <br /> through the hollow stem auger or hand auger device with a slide hammer.The tube, once retrieved, <br /> may be capped and the undisturbed soil sample extruded in the laboratory before analysis. <br /> Split spoon sampler—A cylindrical sampling device generally made of steel, which fits into a hollow <br /> stem auger.The split spoon is separated lengthwise,which allows the sample to be retrieved by opening <br /> ("splitting")the spoon. <br /> Surface soil—In general, soil extends from the surface to 6-12 inches below ground surface (bgs). <br /> However, each investigation's project-specific plans and data quality objectives should be reviewed to <br /> confirm the appropriate interval. Note: surface soil may reside under a paved surface. <br /> Shallow subsurface soil—In general, soil that extends from approximately 12 inches bgs to a depth <br /> usually at which sample collection using manual collection methods becomes impractical (commonly <br /> around 2 feet bgs). However, each investigation's project-specific plans and data quality objectives <br /> should be reviewed to confirm the appropriate interval. <br /> Subsurface soil—In general, soil deeper than 2 feet bgs, including material located above bedrock or any <br /> other consolidated material. However, each investigation's project-specific plans and data quality <br /> objectives should be reviewed to confirm the appropriate interval. <br /> TerraCore® (Or EnCore°) sampler—A coring device that allows a specific quantity of soil to be collected <br /> (e.g., 5 grams and 25 grams) for volatile organic compounds (VOC) and total petroleum hydrocarbon <br /> (TPH)gasoline range organics (GRO) analyses.This device has a tight-fitting cap that seals with an O-ring. <br /> 2.0 Relevant Documents <br /> This SOP focuses on the oversight and documentation of soil sampling activities and should be used in <br /> conjunction with other applicable SOPS. <br /> Page 6 of 15 <br />