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SOP No. 210 Page 6 of 7 • elongated—particles with length/width> 3; or • flat and elongated—particles meet criteria for both flat and elongated. Odor: Describe the odor if organic or unusual. Soils containing a significant amount of organic material have a distinct odor of decaying vegetation. Always utilize appropriate breathing zone air monitoring equipment as specified in the site-specific HASP. Cementation: Describe the cementation of intact coarse-grained soils as follows: • weak—crumbles or breaks with handling or little finger pressure; • moderate—crumbles or breaks with considerable finger pressure; or • strong—will not crumble or break with finger pressure. Identification of Peat: A sample composed primarily of vegetable tissue in various stages of decomposition that has a fibrous to amorphous texture, usually a dark brown to black color,and an organic odor. When present the sample shall be designated as highly organic soil. 2.6 Major/Minor Constituents Grain-size Scales: Grain size classification should be based on an accepted classification system, such as the Unified System.The predominate grain size should be listed in the soil description in all capital letters, selected from the following: • boulder: 300 mm; • cobble: 75 - 300 mm; • coarse gravel: 19 - 75 mm; • fine gravel: 4.75 - 19 mm; • coarse sand: 2.0 -4.75 mm; • medium sand: 0.425 - 2.0 mm; • fine sand: 0.075 - 0.425 mm;