501 RIVERSIDE RD REGIONAL DISPOSAL COMPANY EVT TRANSFER FACILITY PHASE 1 SITE IMP Geotech Report 2025-07-28

SOIL CLASSIFICATION CHART ADDITIONAL MATERIAL SYMBOLS MAJOR DIVISIONS SYMBOLS TYPICAL SYMBOLS TYPICAL GRAPH LETTER DESCRIPTIONS GRAPH LETTER DESCRIPTIONS v CLEAN °w° GW GRAVEL-SAND MIXWELL-GRADED TURES AC Asphalt Concrete GRAVEL GRAVELS ) nC AND GRAVELLY (LITTLE OR NO FINES) D O O O O C GP POORLY-GRADED GRAVELS, /\/\//\ SOILS D 0 0- GRAVEL-SAND MIXTURES \ \ \ / //i CC Cement Concrete o /\/`//\ COARSE o SILTY GRAVELS,GRAVEL-SAND • • GRAINED MORE THAN 50% GRAVELS WITH 0 GM -SILT MIXTURES Crushed Rock/ SOILS OF FINESOf ) • CR Quarry Spalls I RETAINED E NO. (APPRECIABLE AMOUNT G`. CLAYEY GRAVELS,GRAVEL- ' 4 SIEVEOF FINES) C SAND-CLAY MIXTURES TS Topsoil/ Forest Duff/Sod SW WELL-GRADED SANDS, CLEAN SANDS GRAVELLY SANDS MORE THAN 50% SAND Groundwater Contact RETAINED ON NO. AND (LITTLE OR NO FINES) 200 SIEVE SANDY SP POORLY-GRADED SANDS, GRAVELLY SAND Y. Measured groundwater level in SOILS exploration,well,or piezometer MORE OFE THAN COARSE/ SANDS WITH SM SILTY IXTURESDS,SAND-SILT FRACTION FINES Measured free product in well or PASSING NO.4 piezometer • SIEVE (APPRECIABLE AMOUNT • Sc .CLAYEY SANDS,SAND-CLAY OF FINES) i MIXTDRES Graphic Log Contact INORGANIC SILTS,ROCK F ML FLOURUR,CLAYEY SILTS WITH Distinct contact between soil strata or SLIGHT PLASTICITY INORGANIC CLAYS OF LOW TO geologic units SILTS / MEDIUM PLASTICITY,GRAVELLY FINE AND LESS LIQUID THAN 0 CL' CLAYS,SANDY CLAYS,SILTY Approximate location of soil strata GRAINED CLAYS CLAYS,LEAN CLAYS change within a geologic soil unit SOILS - ORGANIC SILTS AND ORGANIC OL PLASTCITTYSOFLOW Material Description Contact MORE THAN 50% IIINORGANIC SILTS,MICACEOUS PASSING NO.200 MH OR DIATOMACEOUS SILTY Distinct contact between soil strata or SIEVE � 1 SOILS geologic units i SILTS LIQUID LIMIT INORGANIC CLAYS OF HIGH _—_— AND GREATER THAN 50 // CH PLASTICITY Approximate location of soil strata CLAYS ` ` change within a geologic soil unit err,��IJJ! OH ORGANIC CLAYS AND SILTS OF -- MEDIUM TO HIGH PLASTICITY HIGHLY ORGANIC SOILS — — — PT PEAT,HUMUS,SWAMP SOILS WITH HIGH ORGANIC CONTENTS NOTE: Multiple symbols are used to indicate borderline or dual soil classifications Laboratory/ Field Tests Sam ler Symbol Descriptions %F Percent fines p y p AL Atterberg limits CA Chemical analysis I2.4-inch I.D.split barrel CP Laboratory compaction test I CS Consolidation test Standard Penetration Test(SPT) DS Direct shear HA Hydrometer analysis . Shelby tube MC Moisture content MD Moisture content and dry density Piston OC Organic content PM Permeability or hydraulic conductivity Direct-Push PI Plasticity index PP Pocket penetrometer I Bulk or grab PPM Parts per million SA Sieve analysis TX Triaxial compression Blowcount is recorded for driven samplers as the number UCUnconfined ofcompression P VSS Vannee she of blows required to advance sampler 12 inches(or distance noted). See exploration log for hammer weight Sheen Classification and drop. NS No Visible Sheen A"P"indicates sampler pushed using the weight of the SS Slight Sheen drill rig. MS Moderate Sheen HS Heavy Sheen NT Not Tested I 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. 1 KEY TO EXPLORATION LOGS GEOENGINEERS 0 FIGUREA-1 I