2018-07-02_PERMIT FILE - M2017013

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DRILLING AND EXPLORATION DRILLING& SAMPLING SYMBOLS: SS: Split Spoon- 13/8" I.D. 2" O.D.,unless otherwise noted PS: Piston Sample ST: Thin-Walled Tube-2" O.D., unless othenyise noted WS: Wash Sample R: Ring Barrel Sampler-2.42" I.D., 3" O.D. unless othern ise 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: HolloNN Stem Auger WB: Wash Bore Standard"N"Penetration: BloNN s per foot of a 140 pound hammer falling 30 inches on a 2-inch O.D.split spoon,except where noted. WATER LEVEL MEASUREMENT SYMBOLS: WL : Water Level WS While Sampling WCI: Wet Cave in WD : While Drilling DCI: Div 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 ground water. In low permeability soils,the accurate determination of ground water 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-2488. Coarse Grained Slight Slight decomposition of parent material on Soils have move than 50%of their dry weight retained on a#200 joints. May be color change. sieve, they are described as: boulders,cobbles,gravel or sand. Moderate Some decomposition and color change Fine Grained Soils have less than 50% of their dry weight throughout. retained on a#200 sieve; they are described as : clays, if they High Rock highly decomposed, may be extremely are plastic, and silts if they are slightly plastic or non-plastic. broken. Major constituents may be added as modifiers and minor HARDNESS AND DEGREE OF CEMENTATION: constituents may be added according to the relative proportions Limestone and Dolomite: based on grain size. In addition to gradation, coarse grained Hard MR—ic—uTt—to—scratch with knife. soils are defined on the basis of their relative in-place density Moderately Can be scratched easily with knife. and fine grained soils on the basis of their consistency. Example: Lean clay with sand. trace gravel, stiff(CL); silty Hard Cannot be scratched with fingernail. sand,trace gravel, medium dense(SM). Soft Can be scratched with fingernail. CONSISTENCY OF FINE-GRAINED SOILS Shale. Siltstone and Claystone: Hard Can be scratched easily with knife,cannot be Unconfined Compressive scratched with fingernail. Strength. Qu.psf Consistency Moderately Can be scratched with fingernail. Hard < 500 Very Soft Soft Can be easily dented but not molded with 500- 1,000 Soft fingers. 1,001 - 2,000 Medium Sandstone and Conglomerate: 2,001 - 4.000 Stiff Well Capable of scratching a knife blade. 4,001 - 8,000 Very Stiff Cemented 8,001 - 16.000 Very Hard Cemented Can be scratched with knife. RELATIVE DENSITY OF COARSE-GRAINED SOILS: Poorly Can be broken apart easily with fingers. N-BloNNs/ft Relative Density Cemented 0-3 Very Loose -4-9 Loose 10-29 Medium Dense 30-49 Dense 50-80 Very Dense 80+ Extremely Dense