1329 MADRONA AVE Geotech Report 2022-10-25

• o .-o 0 o Well-graded gravel and Terms Describing Relative Density and Consistency g in GW gravel with sand,little to Density SPTi�lblowsifoot IL ° no fines Very Loose 0 to 4 m > \o° o D Coarse- Loose 4 to l0 > o m W o o 0o o a Poorly-graded gravel Grained Soils Medium Dense 10 to 30 0 inw 0200 GP and gravel with sand, Dense 3o to 5o Test Symbols g �°g o 8 a 8$ little to no fines Very Dense >50 G=Grain Size (4 -z 0 o 0 o° M=Moisture Content z° o °j Consistency SPT(2)blows/foot A=Atterberg Limits ° Silty gravel and silty VerySoft 0 to 2 C=Chemical . ° GM gravel with sand . Fine- Soft 2 to 4 DD=D Dens' • Grained Soils Medium Stiff 4 to 8 K=Permeabilityri Stiff 8to15 r.f..*! Clayey gravel and Very Stiff 15 to 30 RI j r GC clayey gravel with sand Hard >30 - • 0 -. Component Definitions . c Well graded sand and Descriptive Term Size Range and Sieve Number �, -5 sw sand with gravel,little Boulders Larger than 12' o ii: • to no fines Cobbles 3'to 12' 2 o-w > Gravel 3'to No.4(4.75 mm) o ° v. Poorly-graded sand Coarse Gravel 3°to 3/4' o) 84 vi -' SP and sand with gravel, Fine Gravel 3/4'to No.4(4.75 mm) ° o . •- • little to no fines c d Sand No.4(4.75 mm)to No.200{0.075 mm} e 0 z Coarse Sand No.4(4.75 mm)to No.10(2.00 mm) 0 . • ••I Silty sand and Medium Sand No.10(2.00 mm)to No.40{0.425 mm) ▪ a Y '=• •_: j sM Silty Sand with Fine Sand No.40(0.425 mm)to No.200(0.075 mm) o '-0. gravel• 0 N if Silt and Clay Smaller than No.200(0.075 mm) -� y ScClayey sand and (3)Estimated Percentage Moisture Content clay sand with ravel coy g Component Percentage by Weight Dry-Absence of moisture, Trace <5 dusty,dry to the touch Slit,sandy silt,gravelly silt,• Slightly Moist Perceptible a is c ML silt with sand or gravel Some 5 to<12 moisture Moist-Damp but no visible cn ate0 Modifier 12 to<30 water N v y Clay of low to medium (silty,sandy,gravelly) Very Moist Water visible but d a°; plasticity;silty,sandy,or not free draining zg• c14 gravelly clay,lean clay Very modifier 30 to<50 Wet-Visible free water,usually s J (silty,sandy,gravelly) from below water table a n = Organic clay or silt of low Symbols a —— OL plasticity Blows/6"or o Sampler ler portion of 6` Cement grout ° Elastic silt,clayey silt,silt Type / > surface seal Sampler Type with micaceous or OD % ,'s Description seal c MH Split-Spoon 1 r, J seal )m o diatomaceous fine sand or Sampler 3.0'OD Split-Spoon Sam ter slit SP If p • -:: ..°Ftterpackiwth g cti9. o ( T) 3.25°OD Split-Spoon Ring Sampler 0.)f. :_.blank casing o Clay of high plasticity, Bulk sample a".-;_.---. 10f3 d g 2 an sandy or gravelly clay,fat3.0"OD Thin-Wail Tube Sampler •: -•Screened casing S . clay with sand or gravel (including Shelby tube) vith filter Upack o Grab Sample 6. o, 2 T 22 i/i,,/� _.-End cap Fr �i��r��i Organic clay or silt of Q Portion not recovered a *505 OH medium to high (9 Percentage dryweight (4) a fig/,'' plasticity t�1 (SPT)Standard Penetration Test Depth of ground water (ASTM D 156B) .R ATD=At time drilling > o Peat,muck and other (3) SZ Static water level(date) ; s � y in General Accordance with rn rn N PT highly organic soils Standard Practice for Description (3)Combined USCS symbols Used for c T O .' and Identification of Soils(ASTM D-2488) fines between 5%and i 2% a gClassifications 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 methods of ASTM D-2487 and D-2488 were used as an identification guide for the Unified Sod Classification System. � associated ` earth sciences EXPLORATION LOG KEY FIGURE Al i n c o r o o r a 1 e d