10901 27TH AVE SE Geotech Report 2025-07-29

I I I c "o:o Terms Describing Relative Density and Consistency s •" " Wet-graded gravel and -• = 0•°• GW gravel with sand,little fo Density SPTC2Jblows/foot u- °",°D°D ofiines Very Loose 0to4 m S c°s° Loose 4 to 1D ° ° Poorly graded gravel Coarse- Grained Soils Medium Dense 10 to 30 Test Symbols 0. m > I° ° ° m D 0 v°° o 0 E.,)u3 v5°e°a° G P and gravel with sand, Dense 30 to SO o ° 6 oo°u° little to no fines Very Dense >50 G=Grain Size . ° ° o M=Moisture Content `d z °°°°° Consistency SPT121blows/foot A=Atterberg Limits I 0 2 c 'D'D Silty gravel and silty Very yen 0 to 2 C=Chemical o L VH GM gravel with sand Fine- Soft 2 to 4 DD=Dry Density v {°D, Grained Soils co m o — Medium Still 4 to 8 K=Permeability o Still 8 to 15 Urn aA.r.I!! Clayey gravel and Very stilt >30 30 -- > Oil !! GC clayey gravel with sand Hard o m I..I% Component Definitions m (7 Well-graded sand and Descriptive Term Size Range and Sieve Number I RI C o SW sand with gravel,little Boulders Larger than 12' o u• �;,• to no fines Cobbles 3"to 12° g cti"::^ m Gravel 3°to No.4(4.75 min) 2 m m ;.`t: Poorly-graded sand Coarse Gravel 3°to 3/4° U r° (,) m w • SP and sand with gravel, Fine Gravel 3/4'to No.4(4,75 mm) e, o'e little to no fines c la Sand No.4(4.75 mm)to No.200(0.075 mm) e ii z `''?:'= Coarse Sand No.4(4.75 mm)to No.10(2.00 mm) m m Silty sand and. Medium Sand No.10(2.00 mm)to No.40(0.425 mm) o vy: SM silty sand with Fine Sand No.40(0,425 mm)to No.200(0.075 mm) U o a 0- c gravel Silt and Clay Smaller than No.20D(0.075 mm) in 0 se Clayey sand and (3)Estimated Percentage Moisture Content g Nr clayey sand with gravel Percentage by Dry-Absence of moisture, U iron y/ . Component Weight dusty,dry to the touch Trace <5 Slightly Moist-Perceptible ^ Silt,sandy sill,gravelly silt, Few 5 to 1D moisture w ML silt with sand or gravel Little. 15 to 25 Moist-Damp but no visible U d With •Non-primary coarse water to o constituents: >15% Very Moist-Water visible but N U Clay of low to medium not tree draining plasticity;silty,sandy,or -Ares content between CL 5%and 15% Wet-Visible free water,usually Z W= gravelly clay,lean clay from below water table afei E N J 0 re ti_ Organic clay or silt of low Symbols m _ — of plasticity Blowsl6'or Sampler portion of 6` Cement grout `o r __ Type /• surface seal Elastic silt,clayey silt,silt / Sampler Type U actor) . aentonile MH with micaceous or Split-Spoon G m Description r» seal use s o diatomaceous fine sand or Sampler ( 3.0"OD Split-Spoon Sampler ;•,?Filer pack with , `n o sill (SPT) - 3.25°OD Split-Spoon Ring Sampler t"i'. blank casing o ° of hi h lastici section Clay 9 p ty Bulk sample �- ' _•.Screened casing o ill u Et) CIi sandy or gravelly clay,fat 3.0"OD Thin-Wall Tube Sampler or Hydrolip C H clay with sand or gravel Ni (including Shelby tube) with filler pack Grab Sample Ytj End cap r7 [n'" ,„„,- w ii��if Portion notrecovered t7 O,,i� • Organic clay or silt of I b -' �i;;i;S. OH medium to high nt (41 ,i�� Percentage by dry weight Depth of ground water ;�,i��; plasticity m (SP i)Standard Penetration Test T ATD=At time of drilling i ii (ASTM D-1586) $L (Static water level(date) >•• W " - Peat,muck and other (3) In General Accordance with o,(o ---'-"- PT highly organic soils Standard Practice for Description t�Combined USCS symbols used for U p and Identification of Soils(ASTM D.2488) fines between 5%and 15% Classifications of soils in this report are based on visual field and/or Laboratory observations,which Include density/consistency,moisture condition,grain size,and •-" plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein.Visual-manual and/or laboratory classification g methods of ASTM D-2487 and 0-2488 were used as an identification guide for the Unified Soil Classification System. • g • — — — - — o. Associated Earth Sciences,Inc. ' _ _7534 EXPLORATION LOG KEY U