1528 GRAND AVE Geotech Report 2022-10-25

Soil Classification System uscs MAJOR GRAPHIC LETTER TYPICAL DMSIONS SYMBOL SYMBOL DESCRIPTIONS'1'It21 U V u o o°:a. GW Well-graded gravel;gravel/sand mixture(s);little or no fines GRAVEL AND CLEAN GRAVEL �: o o_ .� a ii GRAVELLY SOIL (Little or no fines) 3 b:o O. °o. Gp Poorly graded gravel;gravel/sand mixture(s);little or no fines N 'J... O.'.o.. m'n n"J m (More than 50%of 3 ' O > GRAVEL WITH FINES ' GM Silty gravel;gravel/sand/silt mixture(s) @ cD coarse fraction �' ' 3. w E'm (Appreciable amount of Z,. retained on No.4 0 Q o sieve) fines) •.• � GC Clayey gravel;gravel/sand/clay mixture(s) fY u• c SAND AND CLEAN SAND SW Well-graded sand;gravelly sand;little or no fines ri)L L SANDY SOIL (Little or no fines) SP Poorly graded sand;gravelly sand;little or no fines <• 2 OU (More than 50%of SM Silty sand;sand/silt mixture(s) coarse fraction passed SAND WITH FINES . through No.4 sieve) (Appreciable amount of fines) SC Clayey sand;sand/clay mixture(s) • Inorganic silt and very fine sand;rock flour;silty or clayey fine 5f. . — o SILT AND CLAY ML sand or clayey silt with slight plasticity p 2 aCL Inorganic clay of low to medium plasticity;gravelly clay;sandy E d (Liquid limit less than 50) clay;silty clay;lean clay 0 z m N OL Organic silt;organic,silty clay of low plasticity o.. a o, MH j Inorganic silt;micaceous or diatomaceous fine sand �0 r 'N SILT AND CLAY w m E CH Inorganic clay of high plasticity;fat clay z o,, (Liquid limit greater than 50) u-2 7- OH Organic clay of medium to high plasticity;organic silt HIGHLY ORGANIC SOIL PT Peat;humus;swamp soil with high organic content �GRAPHIC LETTER OTHER MATERIALS SYMBOL SYMBOL TYPICAL DESCRIPTIONS PAVEMENT AC or PC Asphalt concrete pavement or Portland cement pavement ROCK /fi J1Y�t•, RK Rock(See Rock Classification) f s, • WOOD WD Wood,lumber,wood chips DEBRIS ZO 0 DB Construction debris,garbage 11 n / , Notes: 1. Soil descriptions are based on the general approach presented in the Standard Practice for Description and Identification of Soils(Visual-Manual Procedure), as outlined in ASTM D 2488.Where laboratory index testing has been conducted,soil classifications are based on the Standard Test Method for Classification of Soils for Engineering Purposes,as outlined in ASTM D 2487. 2. Soil description terminology is based on visual estimates(in the absence of laboratory test data)of the percentages of each soil type and is defined as follows: Primary Constituent: >50%-"GRAVEL,""SAND,""SILT,""CLAY,"etc. Secondary Constituents: >30%and<50%-"very gravelly,""very sandy,""very silty,"etc. >12%and<30%-"gravelly,""sandy,""silty,"etc. Additional Constituents: > 5%and<12%-"slightly gravelly,""slightly sandy,""slightly silty,"etc. < 5%-"trace gravel,""trace sand,""trace silt,"etc.,or not noted. Drilling and Sampling Key Field and Lab Test Data SAMPLE NUMBER&INTERVAL SAMPLER TYPE Code Description Code Description Sample Identification Number a 3.25-inch O.D.,2.42-inch I.D.Split Spoon PP=1.0 Pocket Penetrometer,tsf b 2.00-inch O.D.,1.50-inch I.D.Split Spoon TV=0.5 Torvane,tsf �— Recovery Depth Interval c Shelby Tube PID=100 Photoionization Detector VOC screening,ppm 1�j ]Jam— Sample Depth Interval d Grab Sample W=10 Moisture Content,% II�—ff J e Other-See text if applicable D=120 Dry Density,pcf Portion of Sample Retained 1 300-lb Hammer,30-inch Drop -200=60 Material smaller than No.200 sieve,% for Archive or Analysis 2 140-lb Hammer,30-inch Drop GS Grain Size-See separate figure for data 3 Pushed AL Atterberg Limits-See separate figure for data 4 Other-See text if applicable GT Other Geotechnical Testing Groundwater CA Chemical Analysis a Approximate water elevation at time of drilling(ATD)or on date noted. Groundwater ATD levels can fluctuate due to precipitation,seasonal conditions,and other factors. �"3 l� ANDERSON RESIDENCE Figure `� � �+ EVERETT,WASHINGTON Soil Classification System and Key 4