2015-01-16_PERMIT FILE - M2015001 (2)

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COARSE-GRAINED SOILS FINE-GRAINED SOILS LESS THAN 50% FINES* MORE THAN 50% FINES GROUP DESCRIPTION MAJOR GROUP DESCRIPTION MAJOR SYMBOLS DIVISIONS SYMBOLS DIVISIONS WELL-GRADED GRAVELS OR GRAVEL- INORGANIC SILTS, VERY FINE SANDS, GW ML ROCK FLOUR, SILTY OR CLAYEY FINE SAND MIXTURES, LESS THAN 5% FINES , SILTS GRAVELS SANDS AND RE THAN INORGANIC CLAYS OF LOW TO MEDIUM GP POORLY-GRADED GRAVELS OR GRAVEL- MORE CL PLASTICITY, GRAVELLY CLAYS, SANDY CLAYS SAND MIXTURES, LESS THAN 5% FINES OF COARSE CLAYS, SILTY CLAYS, LEAN CLAYS LIQUID LIMIT - FRACTION LESS SILTY GRAVELS, GRAVEL-SAND-SILT IS LARGER ORGANIC SILTS OR ORGANIC SILT-CLAYS THAN 50 GM MIXTURES, MORE THAN 12% FINES THAN OL OF LOW PLASTICITY NO.4 CLAYEY GRAVELS, GRAVEL-SAND-CLAY SIEVE SIZE INORGANIC SILTS, MICACEOUS OR GC MIXTURES, MORE THAN 12% FINES MH DIATOMACEOUS FINE SANDS OR SILTS, SILTS ELASTIC SILTS AND WELL-GRADED SANDS OR GRAVELLY INORGANIC CLAYS OF HIGH PLASTICITY, CLAYS SW SANDS, LESS THAN 5% FINES SANDS CH FAT CLAYS LIQUID LIMIT MORE SP POORLY-GRADED SANDS OR GRAVELLY MORE THAN ORGANIC CLAYS OF MEDIUM TO HIGH THAN 50 SANDS, LESS THAN 5% FINES HALF OH PLASTICITY OF COARSE SILTY SANDS, SAND-SILT MIXTURES, FRACTION SM IS SMALLER HIGHLY MORE THAN 12% FINES THAN PEAT, MUCK AND OTHER HIGHLY NO. 4 PT ORGANIC SOILS ORGANIC SC CLAYEY SANDS, SAND-CLAY SIEVE SIZE SOILS MIXTURES, MORE THAN 12% FINES NOTE: Coarse-grained soils receive dual symbols if they NOTE: Fine-grained soils may receive dual classification contain 5% to 12% fines (e.g., SW-SM, GP-GC). based upon plasticity characteristics. SOIL SIZES CONSISTENCY COMPONENT SIZE RANGE CLAYS & SILTS BLOWS PER FOOT* BOULDERS Above 12 in. VERY SOFT 0 — 2 COBBLES 3 in. — 12 in. SOFT 2 — 4 FIRM 4 — 8 GRAVEL No. 4 — 3 in. STIFF 8 — 16 Coarse 3/4 in. — 3 in. VERY STIFF 16 — 32 Fine No. 4 — 3/4 in. HARD Over 32 SAND No. 200 No. 4 RELATIVE DENSITY Coarse No. 10 - No. 4 SANDS & GRAVELS BLOWS PER FOOT* — Medium No. 40 — No. 10 VERY LOOSE 0 — 4 Fine No. 200 — No. 40 LOOSE 4 — 10 MEDIUM DENSE 10 — 30 DENSE 30 — 50 *Fines (Silt or Clay) Below No. 200 VERY DENSE Over 50 NOTE: Only sizes smaller than three inches are *Number of blows of 140 pound hammer falling used to classify soils 30 inches to drive a 2 inch O.D. (1 3/8 inch ID) split spoon (ASTM D1586). PLASTICITY OF FINE GRAINED SOILS DEFINITION OF WATER CONTENT PLASTICITY INDEX TERM DRY 0 NON-PLASTIC SLIGHTLY DAMP DAMP 1 — 7 LOW MOIST 8 — 25 MEDIUM WET Over 25 HIGH SATURATED Geotechnical Western PLATE Environmental Technologies Inc. Inspections The Quality People METHOD OF CLASSIFICATION A-2 Materials Since 1955 ©81 WTI 092799