Augers

Class	Common Soil Type	Geological Soil Classification	Probe Values in/labs (Nm)	Typical Blow Count in/labs (Nm)
	Sound, hard rock - Unweathered	Granite, Basalt, Massive Limestone	N/A	N/A
	Very dense and/or cemented sands, Coarse gravel & Cobbles	Caliche (Nitrate-bearing Gravel/Rock)	750-1600 (85-181)	60-100+
	Dense, Fine Sands, very hard silts & clays (may be pre-loaded)	Basalt Till, Boulder Clay, Caliche, Weathered Laminated Rock	750-1600 (85-181)	45-60
	Dense sands & gravel, hard silts & clays	Glacial Till, Weathered Shales, Schist, Gneiss & Sandstone	600-750 (68-85)	35-50
	Medium dense sand & gravel; very stiff to hard silts and clays	Glacial Till, Hardpan, Marls	500-600 (58-68)	24-40
	Medium dense coarse sands & sandy gravels; stiff to very stiff clays	Saprolites, Residual Soils	400-500 (45-56)	14-25
	Loose to medium dense fine to coarse sands to stiff clays and silt	Dense Hydraulic Fill, Compacted Fill, Residual Soils	300-400 (34-45)	7-14
	Loose, fine sands; alluvum; loess medium & varied clays, fill	Flood Plain Soils. Lake Clays, Abode, Fill	100-200 (11-25)	4-8
	Peat, organic silts, inundated silts, fly ash, very loose sands, very soft	Miscellaneous Fill, Swamp Marsh	Less than 100	0-5