2014-08-04_REVISION - M1981185 (3)

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Key to Boring and Test Pit log Symbols and Abbreviations Notes Refer to Figure 2 for boring and test pit locations Blow counts converted to Standard Penetration Test (split-spoon sampler) where appropriate Atterberg Limits test used to determine if soil is silt or clay, where possible. Graphic Log descriptions included on Page 3 Abbreviations ASTM —American Society for Testing and Materials U.S.C.S. — Unified Soil Classification System RWB— Roadway Boring RWTP— Roadway Test Pit RWBUTP— Roadway Buttress Test Pit RWGUTP— Roadway Gabion Test Pit TP—Test Pit Log Sampling MC—California sampler symbol SS—Standard Penetration Test (Split Spoon sampler) symbol AU —Auger cuttings sample symbol GB—Grab sample N — Blow counts per 6 inches (N)— Blow counts per foot Testing w— Moisture Content, percent DD— Dry Density, pounds per cubic foot LL— Liquid Limit, PI — Plasticity Index: Atterberg Limit test results (moisture content) UU Triaxial —unconsolidated, undrained triaxial compression test (ASTM D 2850- 03a(2007)) Compaction —modified Proctor compaction test (ASTM D 1557-09) Unified Soil Classifications (ASTM D2487-11) Group Symbol Group Name Group Symbol Group Name GW Well-graded gravel SW Well-graded sand GP Poorly-graded gravel SP Poorly-graded sand GM Silty gravel SM Silty sand GC Clayey gravel SC Clayey sand GW-GM Well-graded gravel with silt SW-SM Well-graded sand with silt GW-GC Well-graded gravel with clay SW-SC Well-graded sand with clay GP-GM Poorly-graded gravel with silt SP-SM Poorly-graded sand with silt GP-GC Poorly-graded gravel with clay SP-SC Poorly-graded sand with clay CL Lean clay CH Fat clay ML Silt MH Elastic Silt OL Organic clay/silt OH Organic clay/silt Page 1 of 3