3214 BROADWAY SEPA 017 - 004 Geotech Report 2025-04-14

Earth Solutions NWLLC SOIL CLASSIFICATION CHART MAJOR DIVISIONS SYMBOLS TYPICAL GRAPH LETTER DESCRIPTIONS CLEAN .6.GRAVEL GRAVELS Od. bilk 61 GW SAND MIXTURES,LITTLE OR NO AND 10 III.11�. FINES GRAVELLY ; v•,b:'�oo POORLY-GRADED GRAVELS, SOILS (LITTLE OR NO FINES) 1, pQo DC Gp GRAVEL-SAND MIXTURES,LITTLE ,O 0 AO Q OR NO FINES COARSE '"0' °'+�! --I GRAINED GRAVELS WITH °3 gii,°�C° SILTY GRAVELS,GRAVEL-SAND- SOILS MORE THAN 50% FINES ?o ► - D GM SILT MIXTURES OF COARSE 30 111 01 Q FRACTION !► !-, RETAINED ON NO. AP .4g �G..�. 4 SIEVE (APPRECIABLE j� �� CLAYEY GRAVELS,GRAVEL-SAND- AMOUNT OF FINES) -','r��sir, GC CLAY MIXTURES WELL-GRADED SANDS,GRAVELLY MORE THAN 50% SAND CLEAN SANDS SW SANDS,LITTLE OR NO FINES OF MATERIAL IS AND ........ LARGER THAN SANDY POORLY-GRADED SANDS, NO.200 SIEVE SOILS SIZE (LITTLE OR NO FINES) S P GRAVELLY SAND,LITTLE OR NO FINES SANDS WITH SILTY SANDS,SAND-SILT MORE THAN 50% FINES SM MIXTURES OF COARSE FRACTION PASSING ON NO. 4 SIEVE (APPRECIABLE SC CLAYEY SANDS,SAND-CLAY AMOUNT OF FINES) MIXTURES INORGANIC SILTS AND VERY FINE ML SANDS,ROCK FLOUR,SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY SILTS j INORGANIC CLAYS OF LOW TO FINE AND LIQUID LIMIT CL MEDIUM PLASTICITY,GRAVELLY GRAINED LESS THAN 50 CLAYS,SANDY CLAYS,SILTY CLAYS CLAYS,LEAN CLAYS SOILS — OL ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY MORE THAN 50% INORGANIC SILTS,MICACEOUS OR OF MATERIAL IS MH DIATOMACEOUS FINE SAND OR SMALLER THAN SILTY SOILS NO.200 SIEVE SIZE SILTS LIQUID LIMITPi. INORGANIC CLAYS OF HIGH CLAYSAND GREATER THAN 50 CH PLASTICITY OH ORGANIC CLAYS OF MEDIUM TO «, HIGH PLASTICITY,ORGANIC SILTS — — 1 . ,: .� !. .�!. + ._ PEAT,HUMUS,SWAMP SOILS WITH HIGHLY ORGANIC SOILS + -+ PT HIGH ORGANIC CONTENTS DUAL SYMBOLS are used to indicate borderline soil classifications. The discussion in the text of this report is necessary for a proper understanding of the nature of the material presented in the attached logs.