2024-02-26_PERMIT FILE - M2024005

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DRILLING AND EXPLORATION 72 DRILLING & SAMPLING SYMBOLS: SS : Split Spoon - 1%" I.D., 2" 0.D., unless otherwise noted PS : Piston Sample T : Thin-Walled Tube - 2" O.D., unless otherwise noted WS : Wash Sample A: Ring Barrel Sampler - 2.42" I.D., 3" 0.D. unless otherwise noted. PA : Power Auger FT : Fish Tail Bit HA : Hand Auger RB : Rock Bit DB : Diamond Bit = 4", N, B BS : Bulk Sample AS :Auger Sample PM : Pressure Meter HS : Hollow Stem Auger DC : Dutch Cone WB :Wash Bore Penetration Test: Blows per foot of a 140 pound hammer failing 30 inches on a 2-inch 0.D.split spoon, except where noted. • WATER LEVEL MEASUREMENT SYMBOLS: WL : Water Level WS : While Sampling WC1 : Wet Cave in WD : While Drilling DCI : Dry Cave in BCR : Before Casing Removal AB : After Boring ACR : After Casting Removal Water levels indicated on the boring logs are the levels measured in the borings at the time indicated. In pervious soils, the indicated levels may reflect the location of groundwater. In low permeability soils, the accurate determination of groundwater levels is not possible with only short term observations. DESCRIPTIVE SOIL CLASSIFICATION PHYSICAL PROPERTIES OF BEDROCK Soil Classification is based on the Unified Soil Classification DEGREE OF WEATHERING: system and the ASTM Designations D-2487 and D-2488. Coarse Grained Soils have more than 50% of their dry Slight Slight decomposition of parent material on weight retained on a #200 sieve; they are described as: joints. May be color change. boulders, cobbles, gravel or sand. Fine Grained Soils have less than 50%of their dry weight retained on a#200 sieve; Moderate Some decomposition and color change ey are described as: clays, if they are plastic,and silts if throughout. ,ey are slightly plastic or non-plastic. Major constituents may be added as modifiers and minor constituents may be High Rock highly decomposed,may be extremely added according to the relative proportions based on grain broken. size. In addition to gradation, coarse grained soils are defined on the basis of their relative in-place density and HARDNESS AND DEGREE OF CEMENTATION: fine grained soils on the basis of their consistency. Limestone and Dolomite: Example: Lean clay with sand,trace gravel,stiff(CL); silty Hard Difficult to scratch with knife. sand, trace gravel, medium dense (SM). Moderately Can be scratched easily with knife, CONSISTENCY OF FINE-GRAINED SOILS Herd Cannot be scratched with fingernail. Unconfined Compressive Soft Can be scratched with fingernail. Strength, Du, pet Consistency Shale. Siltstone and Claystone: < 500 Very Soft Hard Can be scratched easily with knife, cannot 500 - 1,000 Soft be scratched with fingernail. 1,001 - 2,000 Medium 2,001 - 4,000 Stiff Moderately Can be scratched with fingernail. 4,001 - 8,000 Very Stiff Hard 8,001 - 16,000 Very Hard Soft Can be easily dented but not molded with RELATIVE DENSITY OF COARSE-GRAINED SOILS: _ fingers. N-Blows/ft Relative Density 0-3 Very Loose Sandstone and Conglomerate: 4-9 Loose Well Capable of scratching a knife blade. 10-29 Medium Dense Cemented 30-49 Dense 50-80 Very Dense Cemented Can be scratched with knife. 80 + Extremely Dense Poorly Can be broken apart easily with fingers. Cemented Empire Laboratories, Inc. A Division of The Terracon Companies, Inc.