2022-12-16_PERMIT FILE - M2021067

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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 otherwise noted WS: Wash Sample R: Ring Barrel Sampler-2.42"I.D.,3"O.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 WB: Wash Bore Standard"N"Penetration: Blows per foot of a 140 pound hammer failing 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: 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 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 system and the ASTM Designations D-2488. Coarse Grained DEGREE OF WEATHERING: Soils have move than 50%of their dry weight retained on a Slight Slight decomposition of parent material on #200 sieve;they are described as: boulders,cobbles,gravel or joints. May be color change. sand. Fine Grained Soils have less than 50%of their dry weight Moderate Some decomposition and color change retained on a#200 sieve;they are described as: clays,if they throughout. are plastic, and silts if they are slightly plastic or non-plastic. High Rock highly decomposed, may be extremely Major constituents may be added as modifiers and minor broken. constituents may be added according to the relative proportions based on grain size. In addition to gradation, HARDNESS AND DEGREE OF CEMENTATION: coarse grained soils are defined on the basis of their relative in- Limestone and Dolomite: place density and fine grained soils on the basis of their Hard Difficult to scratch with knife. consistency. Example: Lean clay with sand,trace gravel,stiff (CL);silty sand,trace gravel,medium dense(SM). Moderately Can be scratched easily with knife. CONSISTENCY OF FINE-GRAINED SOILS Hard Cannot be scratched with fingernail. Unconfined Compressive Soft Can be scratched with fingernail. Strength,Qu,psf Consistency Shale,Siltstone and Claystone: < 500 Very Soft Hard Can be scratched easily with knife,cannot be 500- 1,000 Soft scratched with fingernail. 1,001- 2,000 Medium Moderately Can be scratched with fingernail. 2,001- 4,000 Stiff Hard 4,001- 8,000 Very Stiff Soft Can be easily dented but not molded with 8,001-16,000 Very Hard fingers. Sandstone and Conglomerate: RELATIVE DENSITY OF COARSE-GRAINED SOILS: Well Capable of scratching a knife blade. N-Blows/ft Relative Density Cemented 0-3 Very Loose Cemented Can be scratched with knife. 4-9 Loose 10-29 Medium Dense Poorly Can be broken apart easily with fingers. 30-49 Dense Cemented 50-80 Very Dense 80+ Extremely Dense Earth Engineering Consultants,LLC