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SOP No. 210 Page 4 of 7 2.3 Density In borings, density should be based on the sum of the middle two 6-inch blow counts of a two-ft split spoon or the last two 6-inch blow counts of an 18-inch split spoon. Professional judgement should be used when applying the density modifier. If high blow counts are due to the presence of a cobble, boulder or large piece of gravel that impedes forward progress of the split spoon,density should based upon the character of the material in the split spoon,if any,or omitted from the description. A notation should be made in the sample description when this situation occurs. Appropriate modifiers are described in the following table. Granular Soils Cohesive Soils Blows/ft Density Blows/ft Density 0-4 Very loose <2 very soft 4-10 Loose 2-4 Soft 10-30 medium dense 4-8 medium stiff 30-50 Dense 8-15 Stiff >50 Very dense 15-30 very stiff >30 Hard In test pits, density is subjective and should be based upon the ease of excavation. The above adjectives for granular and cohesive soils should be used in the description. 2.4 Moisture Content Moisture content should be described using the following modifiers: • dry -no moisture; • damp-very slight moisture content, no visible water droplets; • moist -very slight moisture content, soils will not stick together; • wet - enough moisture for soils to stick together; or • saturated -water dripping from sample; soils below the water table.