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TO E RO E K SOP No.004,REv.2 <br /> AssoclATEs,INC SOIL SAMPLING <br /> I PAGE 1 <br /> 1.0 BACKGROUND <br /> Soil sampling is conducted for three main reasons: for laboratory chemical analysis, <br /> laboratory physical analysis, or visual classification and field screening. These three <br /> sampling objectives can be achieved separately or in combination with each other. Sampling <br /> locations are typically chosen to provide chemical, physical, or visual data in both the <br /> horizontal and vertical directions. A sampling and analysis plan (SAP), comprising a field <br /> sampling plan (FSP) and a quality assurance project plan (QAPP), is used to outline sampling <br /> methods and provide preliminary rationale for sampling locations. Sampling locations may <br /> be adjusted in the field based on the screening methods being used and the physical features <br /> of the area. <br /> 1.1 PURPOSE <br /> Soil sampling is conducted to determine the chemical, physical, and visual characteristics of <br /> surface and subsurface soils. <br /> 1.2 SCOPE <br /> This standard operating procedure (SOP) describes procedures for soil sampling in different <br /> areas using various implements. It includes procedures for test pit, surface soil, and <br /> subsurface soil sampling, and describes ten soil sampling devices. <br /> 1.3 DEFINITIONS <br /> Hand auger: Instrument attached to the bottom of a length of pipe that has a cross-arm or <br /> "T" handle at the top. The auger can be closed-spiral or open-spiral. <br /> Bucket auger: A type of auger that consists of a cylindrical bucket 10 to 72 inches in <br /> diameter with teeth arranged at the bottom. <br /> Core sampler: Thin-wall cylindrical metal tube with diameter of 0.5 to 3 inches, a tapered <br /> nosepiece, a "T" handle to facilitate sampler deployment and retrieval, and a check valve <br /> (flutter valve) in the headpiece. <br /> EnCoreTM sampler: A disposable volumetric sampling device. It comes in sample sizes of 5 <br /> and 25 grams. It is a hermetically sealed, single-use soil sampler made from a high-tech, <br /> inert polymer. EnCoreTM samplers are used to collect soil samples with zero headspace, <br /> as required for volatile organic compound analysis. Each sample is collected using a <br />