Salton Sea Preliminary In-Sea Geotechnical Investigation

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TablesTable 3Summary of Material PropertiesSalton Sea Restoration ProjectTest TypeUnified SoilClassification aNo. ofTestsSea Floor Deposit Soft Lacustrine Deposit Alluvial Deposits Stiff Lacustrine DepositsHigh Low Avg. MedianNo. ofTestsHigh Low Avg. Median34 91%CH / 9% SM 31 87% CH / 3% ML/ 10% CL 27No. ofTestsHigh Low Avg. Median52% SM / 15% ML / 7% CL / 7%SP-SM / 15% CH / 4%SCNo. ofTests64High Low Avg. Median72% CH / 14% CL / 9% SM /3% ML / 2% CL-MLWater Content(%)34 98 22 63 66 31 65 30 43 41 26 41 15 25 24 64 52 19 32 32Total UnitWeight (pcf)28 127 93 102 99 21 120 97 110 113 11 128 115 123 124 29 128 102 119 121Dry UnitWeight (pcf)28 102 47 64 52 21 91 61 79 80 11 106 85 98 100 29 105 71 90 91Liquid Limit(%)11 85 60 77 79 11 89 32 66 71 1 97 97 97 97 18 79 21 55 63Plasticity Index(%)11 54 40 48 52 11 58 12 40 46 1 65 65 65 65 18 54 4 34 40Liquidity Index 11 1.59 0.20 0.81 0.72 11 1.63 0.12 0.63 0.35 1 -0.12 -0.12 -0.12 -0.12 18 1.50 0.09 0.39 0.22Plastic Limit(%)8 33 20 30 31 11 32 16 26 28 1 32 32 32 32 18 26 15 21 23Sand b (%) 21 86 1 41 36 4 7 1 4 4 12 91 6 59 61 14 88 0 24 9Fines c (%) 11 100 14 64 78 4 99 93 96 97 23 97 9 43 34 22 100 12 73 88SpecificGravity3 2.76 2.68 2.72 2.72 1 2.77 2.77 2.77 2.77 1 2.72 2.72 2.72 2.72 3 2.77 2.73 2.76 2.77Notes:a. Percentages denote that of samples tested.b. Averages and medians may be biased as coarser samples were selected for particle size analyses.c. Percent finer than the No. 200 seive.d. na denotes test data not available for that stratumW:\27663042\00005-c-r.doc\1-Mar-04\SDG T-3
TablesTable 4Summary of Unconsolidated Undrained Triaxial Test DataSalton Sea Restoration ProjectExplorationNumberSampleNumberSampleDepth(ft)Unified SoilClassificationStrataWaterContent(%)LiquidLimit(%)PlasticityIndex(%)DryDensity(pcf)TriaxialConfiningPressures(psf)Peak DeviatorStressat Failure(psf)AxialStrainat Failure(%)UndrainedShearStrength,Cu(psf)B-4 2 4.2 CH Seafloor Deposit 78 74 41 53 500 250 13.0 125B-4 5 21.5 CH Seafloor Deposit 28 ― ― 96 1,000 1,600 16.0 800B-5 1 2.6 CH Seafloor Deposit 79 85 54 54 500 350 10.0 175B-6 1 2.8 CH Seafloor Deposit 72 ― ― 55 500 400 10.0 200B-17 1 1.5 CH Seafloor Deposit 98 72 44 47 500 150 10.0 75B-19 2 5.8 CH Seafloor Deposit 66 82 52 60 500 300 13.0 150B-2 2 4.5 CHB-5 5 21.6 CHB-6 3 12.2 CHB-14 2 5.7 CLB-20 2 5.5 CHSoft LacustrineDepositSoft LacustrineDepositSeafloor Deposit /Soft LacustrineDepositSoft LacustrineDepositSoft LacustrineDeposit34 70 42 88 500 2,200 7.1 1,10040 ― ― 80 1,000 1,100 10.6 55031 ― ― 91 750 700 17.7 35039 ― ― 83 500 400 24.0 20037 70 44 84 500 2,100 22.5 1,050W:\27663042\00005-c-r.doc\1-Mar-04\SDG T-4
Page 1: R E P O R TPreliminary In-Sea Geote
Page 4 and 5: TABLE OF CONTENTSSection 5 Prelimin
Page 6 and 7: List of Acronyms and AbbreviationsA
Page 8 and 9: Executive Summarysusceptible to sei
Page 10 and 11: SECTIONONEIntroductionvarious resto
Page 12 and 13: SECTIONTWOPreliminary Geotechnical
Page 14 and 15: SECTIONTWOPreliminary Geotechnical
Page 16 and 17: SECTIONTHREESite ConditionsThe Salt
Page 18 and 19: SECTIONTHREESite Conditions3.4 SUBB
Page 20 and 21: SECTIONTHREESite ConditionsVery lit
Page 22 and 23: SECTIONFOURPotential Geologic And S
Page 24 and 25: SECTIONFIVEPreliminary Engineering
Page 32 and 33: SECTIONSIXPreliminary Embankment De
Page 34 and 35: SECTIONSIXPreliminary Embankment De
Page 36 and 37: SECTIONSEVENFurther StudiesSECTION
Page 38 and 39: SECTIONSEVENFurther Studiesparamete
Page 40 and 41: SECTIONNINEReferencesSECTION 9REFER
Page 42 and 43: SECTIONNINEReferencesRoberston, P.K
Page 44 and 45: TablesTable 1Summary of In-Sea Expl
Page 48 and 49: TablesTable 4 (continued)Summary of
Page 50 and 51: TablesTable 5Summary of Consolidate
Page 52 and 53: TablesTable 7Recent Large Earthquak
Page 54 and 55: TablesTable 9Results of Preliminary
Page 56 and 57: TablesTable 10Results of Prelimary
Page 58: FiguresW:\27663042\00005-c-r.doc\1-
Page 62 and 63: Standard penetration samplePunch Co
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Page 83 and 84: APPENDIXAIn-Sea BoringsW:\27663042\
Page 85 and 86: APPENDIXAIn-Sea BoringsPortions of
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APPENDIXBIn-Sea Cone Penetration Te
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APPENDIXCLaboratory TestingW:\27663
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APPENDIXCLaboratory TestingTable C-
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APPENDIXCLaboratory TestingTable C-
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SAMPLE PHOTOGRAPHSSOFT LACUSTRINE D
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SAMPLE PHOTOGRAPHSUPPER STIFF LACUS
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SAMPLE PHOTOGRAPHSLOWER STIFF LACUS
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0Water Content (percent of dry weig
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Water Content (percent of dry weigh
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APPENDIXDStatic Slope Stability Ana
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Salton Sea Preliminary In-Sea Geotechnical Investigation

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