Salton Sea Preliminary In-Sea Geotechnical Investigation

TablesTable 6Summary of Consolidation Test DataSalton Sea Restoration ProjectExplorationNumberSampleNumberSampleDepth(ft)Unified SoilClassificationStrataWaterContent(%)LiquidLimit(%)PlasticityIndex(%)LiquidityIndexInitialDryDensity(pcf)InitialVoidRatioExistingOverburdenPressure(psf)ApparentPreconsolidationPressure(psf)OCR Cc Cr CR RRCv(ft 2 /yr)RemarksB-4 3 12.0 CH Seafloor Deposit 81.9 84 53 0.37 53 2.24 396 900 2.3 0.568 0.057 0.175 0.020 40B-5 2 7.0 CH Seafloor Deposit 58.3 ― ― ― 64 1.98 252 620 2.5 0.792 0.079 0.266 0.024 8B-5 3 10.0 CH Seafloor Deposit 56.0 79 53 0.57 61 1.79 377 450 1.2 0.762 0.076 0.273 0.017 33B-17 2 5.0 ML Seafloor Deposit 51.3 ― ― ― 74 1.36 240 550 2.3 0.229 0.023 0.097 0.014 16B-19 1 2.0 ML Seafloor Deposit 83.4 ― ― ― 52 2.30 74 350 4.7 1.096 0.110 0.332 0.023 10B-26 1 2.0 ML Seafloor Deposit 78.2 ― ― ― 56 2.15 67 575 8.6 0.864 0.086 0.274 0.007 24B-4 9 41.0 CHSoft LacustrineDeposit60.9 ― ― ― 64 1.68 1461 1700 1.2 0.611 0.061 0.228 0.018 14B-7 2 6.0 CL/CHSoft LacustrineDeposit33.6 71 47 0.20 89 0.94 304 1300 4.3 0.142 0.014 0.073 0.012 21B-14 2 6.0 MLSoft LacustrineDeposit29.6 32 12 1.56 90 1.05 251 1300 5.2 0.097 0.010 0.048 0.003 135B-19 5 20.0 CHSoft LacustrineDeposit52.6 ― ― ― 87 0.97 848 850 1.0 0.186 0.019 0.094 0.008 39B-26 4 15.0 ML/CLSoft LacustrineDeposit20.9 32 16 1.63 94 1.15 607 580 1.0 0.247 0.025 0.115 0.017 9B-7 4 15.0 SMUpper AlluvialDeposit24.1 97 65 -0.12 92 0.87 779 1000 1.3 0.140 0.014 0.075 0.014 6B-2 5 19.0 CHUpper StiffLacutrine Deposit32.5 65 42 0.23 91 0.79 1076 1200 1.1 0.111 0.011 0.062 na 14Sample swelled upon saturationprior to consolidation test.B-5 10 45.5 CHUpper StiffLacustrine Deposit36.7 ― ― ― 75 1.29 2154 1000 0.5 0.259 0.026 0.113 0.018 18B-6 6 26.0 SMSoft LacustrineDeposit / UpperStiff LacustrineDeposit25.1 ― ― ― 99 0.59 1119 2000 1.8 0.130 0.001 0.008 0.001 189W:\27663042\00005-c-r.doc\1-Mar-04\SDG T-8