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Oskar Property Deck Limited CAO,Everett,WA Materials Testing&Consulting,Inc. <br /> July 17,2019 19B182 <br /> Appendix C. Exploration Logs <br /> Unified Soil Classification System Chart <br /> Sampler Symbol Description <br /> Major Divisions Graph USCS Typical Description <br /> p Standard Penetration Test(SPT) <br /> Coarse d �. GW Well-graded Gravels,Gravel•Sand Ma <br /> Grained Soils Gravel o :O•° tures <br /> Clean Gravels ® Shelby Tube <br /> More Than i•. GP Poorly-Graded Gravels,Gravel-Sand <br /> 50%of • • Mixtures <br /> Coarse Frac- <br /> tion <br /> rao- ® Grab or Bulk <br /> tion Retained A'n P. GM Silty Gravels,Gravel-Sand-Silt Mixtures <br /> More Than 50% On No.4 V1'-:'f,4' 8 California(3.0"O.D.) <br /> Retained On Sieve Gravels With Fines 4;"r�d <br /> No.200 Sieve GC Clayey Gravels,Gravel-Sand-Clay Mix- <br /> tures i Modified California(2.5"O.D.) <br /> 1d, <br /> ' SW Well-graded Sands,Gravelly Sands <br /> Sand Stratigraphic Contact <br /> Clean Sands • • Distinct Stratigraphic Contact <br /> More Than SP Poorly-Graded Sands, Gravelly Sands Between Soil Strata <br /> 50%of • • • <br /> Coarse Frau- 'a..,. \ Gradual Change Between Soil <br /> tion Passing :;• - <br /> '\:' SM Silty Sands,Sand-Silt Mixtures Strata <br /> No.4 Sieve ;,i,;;, ;i Approximate location of <br /> Sands With Fines t,t ,i., stratagraphic change <br /> SC Clayey Sands,Clay Mixtures <br /> Fine Grained ML Inorganic Silts,rock Flour,Clayey Silts i Groundwater observed at time of <br /> Soils With Low Plasticity exploration <br /> Silts&Clays Liquid Limit Less ,f' CL Inorganic Clays of Low To Medium Measured groundwater level in <br /> Y 9 exploration,well,or piezometer <br /> Than 50 Plasticity <br /> More Than 50% ♦ Perched water observed at time <br /> Passing The OL Organic Silts and Organic Silty Clays of of exploration <br /> No.200 Sieve Low Plasticity <br /> MH Inorganic Silts of Moderate Plasticity <br /> Modifiers <br /> Silts&Clays Liquid Limit 7 CH Inorganic Clays of High Plasticity Description <br /> Greater Than 50 Trace >5 <br /> OH Organic Clays And Silts ofMediumto Some 5-12 <br /> • <br /> High Plasticity <br /> 1....< <br /> PT Peat,Humus,Soils with Predominantly With >12 <br /> Highly Organic Soils Organic Content <br /> Soil ConsistencyGram Size <br /> Granular Soils Fine-grained Soils DESCRIPTION SIEVE GRAIN SIZE APPROXIMATE SIZE <br /> SIZE <br /> Density SPT Consistency SPT <br /> Blowcount Blowcount Boulders >12" >12" Larger than a basketball <br /> Very Loose 0-4 Very Soft 0-2 Cobbles 3-12" 3-12" Fist to basketball <br /> Loose 4-10 Soft 2-4 Coarse 3/4-3" 3/4-3" Thumb to fist <br /> Gravel <br /> Medium 10-30 -Firm 4-8 Fine #4-3/4" 0.19-0.75" Pea to thumb <br /> Dense <br /> Dense 30-50 Stiff 8-15 Coarse #10-#4 0.079-0.19" Rock salt to pea <br /> Very Dense >50 Very Stiff 15-30 Sand Medium #40-#10 0.017-0.079" Sugar to rock salt <br /> Hard >30 Fine #200-#40 0.0029-0.017" Flour to Sugar <br /> Fines Passing <0.0029" Flour and smaller <br /> #200 <br /> Materials Testing & Consulting,Inc. Exploration Log Key FIGURE <br /> 777 Chrysler Drive Oskar Property Deck CAO <br /> Burlington, WA 98233 4702 West Glenhaven Drive <br /> Everett, Washington <br /> 6-97:11 9 <br /> A.` <br />