2312 W CASINO RD COMMUNITY TRANSIT Geotech Report 2022-10-25

SOIL CLASSIFICATION CHART ADDITIONAL MATERIAL SYMBOLS MAJOR DIVISIONS SYMBOLS TYPICAL SYMBOLS TYPICAL GRAPH LETTER DESCRIPTIONS GRAPH LETTER DESCRIPTIONS D�Uc 0 o WELL-GRADED GRAVELS,GRAVEL- CLEAN GRAVELS 0 GW SAND MIXTURES GRAVEL ) nC AC. Asphalt Concrete AND 0 0 GRAVELLY (LITTLE OR NO FINES) 0 0 C POORLY-GRADED GRAVELS, \ \ \ SOILS 3 0 0 GP GRAVEL-SAND MIXTURES ,/\/\//\' cc Cement Concrete O o O • C '/\/\//\i COARSE c c SILTY GRAVELS,GRAVEL-SAND- — GRAVELS WITH m GM SILT MIXTURES •GRAINED MORETHAN5O% FINES ,'. • CR Crushed Rock/ SOILS OF COARSE FRACTION RETAINED Quarry Spalls ON NO.4 SIEVE (APPRECIABLE AMOUNT c CLAYEY GRAVELS,GRAVEL-SAND- OFFINES) 0 GC CLAY MIXTURES sk)ili J U, s) °/ I/, ,(), SOD Sod/Forest Duff SW WELL-GRADED SANDS,GRAVELLY CLEAN SANDS SANDS MORE THAN 50% SAND ° RETAINED ON AND (LITTLEORNOFINES) TS. Topsoil NO.200 SIEVE SANDY SP POORLY-GRADED SANDS,GRAVELLY SAND ........• SOILS MORE THAN 50% SANDS WITH SM SILTY SANDS,SAND-SILT MIXTURES OF COARSE FINES Groundwater Contact FRACTION PASSING ON NO.4 SIEVE (APPRECIABLE AMOUNT � SC CLAYEYSANDS,SAND-CLAY . Measured groundwater level in exploration, OF FINES) SC MIXTURES well,or piezometer INORGANIC SILTS,ROCK FLOUR, ML PLASTTIICSILTS WITH SLIGHT e Measured free product in well or piezometer INORGANIC CLAYS OF LOW TO SILTS AND MEDIUM PLASTICITY,GRAVELLY FINE CLAYS LIQUID LIMIT CL CLAYS,SANDY CLAYS,SILTY CLAYS, Graphic Log Contact LESS THAN 50 LEAN CLAYS GRAINED SOILS ORGANIC SILTS AND ORGANIC SILTY Distinct contact between soil strata OL CLAYS OF LOW PLASTICITY / Approximate contact between soil strata MORE THAN 50% INORGANIC SILTS,MICACEOUS OR PASSING Mn DIATOMACEOUS SILTY SOILS NO.200 SIEVE Material Description Contact SILTS AND LIQUID LIMIT GREATER INORGANIC CLAYS OF HIGH CLAYS THAN 50 CH PLASTICITY Contact between geologic units ORGANIC CLAYS AND SILTS OF ____ Contact between soil of the same geologic / / OH MEDIUM TO HIGH PLASTICITY unit HIGHLY ORGANIC SOILS L A-A-A-`/` PT H GH ORGANIC CONTENTSLS WITH Laboratory/ Field Tests NOTE: Multiple symbols are used to indicate borderline or dual soil classifications o%F Percent fines %G Percent gravel AL Atterberg limits Sampler Symbol Descriptions CA Chemical analysis CP Laboratory compaction test 2.4-inch I.D.split barrel CS Consolidation test DD Dry density VIStandard Penetration Test(SPT) DS Direct shear ■ HA Hydrometer analysis Shelby tube MC Moisture content Piston MD Moisture content and dry density Mohs Mohs hardness scale II Direct-Push OC Organic content PM Permeability or hydraulic conductivity III Bulk or grab PI Plasticity index PL Point lead test Continuous Coring PP Pocket penetrometer SA Sieve analysis Blowcount is recorded for driven samplers as the number of TX UnconfinedTriaxial compression compression blows required to advance sampler 12 inches(or distance noted). VS a compression See exploration log for hammer weight and drop. VS Vane shear "P"indicates sampler pushed using the weight of the drill rig. Sheen Classification NS No Visible Sheen "WOH"indicates sampler pushed using the weight of the SS Slight Sheen hammer. MS Moderate Sheen HS Heavy Sheen NOTE:The reader must refer to the discussion in the report text and the logs of explorations for a proper understanding of subsurface conditions. Descriptions on the logs apply only at the specific exploration locations and at the time the explorations were made;they are not warranted to be representative of subsurface conditions at other locations or times. Key to Exploration Logs GEOENGINEERr FigureA-1 Rev 07/2019