2016-11-07_REVISION - M1973007SG

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G: Tem lutes\CAD Stds\BA Test Boring Ke .dog DESCRIPTION AND CLASSIFICATION OF SUBSURFACE MATERIALS SOIL ROCK Sell description on logs of subsurface explorations are hand on Standard Penetration Test results,visual-manual Rock descriptions noted on logs of subsurface explorations are based on visual-manual examination of examination of exposed sol and soil samples,and the results of laboratory tests on selected samples.The exposed rock outcrops and core samples.The criteria,descriptive terms and definitions used are as follows: criteria,descriptive terms and defintions are as follows. ROD: Rock Quality Designation-Sum of the length of recovered core places greater than or equal to 4Inches divided by DENSITY OR CONSISTENCY the theoretical length of rock cored. Modified CA REC: Recovery Rado4ength of core recovered divided by the theoretical length of rock cored. Density of SPT Sampler Consistency of SPT FIELD HARDNESS: A measure of resistance lo scratching. Cohesionless Solis (Blows per III (Blows per it) Cohesive Solis (Blows per ft) g• Very Hard Cannot be scratched with a knife point or sharp pick. Very Loose 0.4 04 Very Soft 0.2 Loose 5.10 5.12 Soft 3-4Mecki 11-30 13-35 Medium 5.8 Hard Can be scratched with a knife point or pick only with difficulty. Dense 31-50 36.80 Stiff 9.15 Very Dense over 50 over 60 Very Stiff 16.30 Medium Hard Can be grooved or gouged 11161n,deep by firm pressure on knife or pick point. PENETRATION RESISTANCE Hard over 30 Soft Can be grooved or gouged easily with a knife or pick point Standard Penetration Test(ASTM D-1588)-Number of blows required to drive a standard 2 In.O.D.split spoon sampler 6 In.with a 140 lb.wekht(aging freely,through 30 In.Penetration values(Nwalues)are generally counted over the krwer Very Soft Can be carved with a knife and excavated with a pick point.Can be scratched by fingernail. 12 In.of sampler pen don. COLOR: Basic colors and combinations:black,brown,gray,yellow-brown,etc. WEATHERING: The action of organic and Inorganic and chemical and physical processes resulting In alteration of color,texture and composition. MOISTURE CONTENT: Fresh-FR No visible sign of alteration,except perhaps slight discoloration on major discontinuity surfaces. Dry -Absence of moisture,dusty,dry to the touch Moist -Damp but no visible water SllghtSL Dlscebratlon of rock material and discontinuity surfaces. Wet -Visible free water,usually sal Is blow water table Moderate-MOD Less than half the rock material decomposed to soil.Fresh or discolored rock Is present either as 'framework'or as corestares. SUPPLEMENTAL SOIL TERMINOLOGY: FIELD GRADATION OBSERVATIONS High-HIGH More than half the mck material decomposed and/or disintegrated to soil.Fresh or discolored rock Bed -A sedimentary layer bounded by depositional surfaces Trace <5% Is present as discontinuous"framework"or as corestones. Blocky -A characteristic In which cohesive sol can be broken Few 5 TO 10% Complete-COMP All rock material disintegrated to soft but mass still Intact. darn Into small angular lumps which resist further breakdown Little 15 TO 25% Bonded -Attached or adhering Same 30 TO 45% Residual Soil All rock material converted to sol.Volume of mass changed,but material has not been Flssu red -Broken along definite planes of fracture Mostly 50 TO 100% s1gnl8cantiy transported. Foliated -Planar arrangement of textural o structural features Groundwater Level Mordtorino Well Details COLOR: Bask colors and combinations:gray,light grey,brown,red-brown. Frequent -More than one per 12 In.of thickness Homogeneous -Same color and appearance throughout flush-mount cover Interbedded -Alternating soil layers of differing composition ® bentonke pellets TEXTURE: Size,shape and arrangements of constituents. BEDDING: APERTURE: Laraine -0 to 1/161n.thick(adhesive) Layer -12 to 12 In.thick Very Fine- Indt*ual grains Invisible Term Inches Term Wloth In Lens -Lenticular deposit larger than — silica sand,pipe dser grained only). 1=�amefythin <�.7� TfgFi- <0.04 per rg pocket ® (Igrrews/metamorptic on Very thin 0.75-2.5 Pa Open Mottled -Variation of color Fine-grained Grains barely visible to the unaided eye, ry rtty pe >0.04 to 0.4 Occasional -One or less per 12 In.of thickness screen pipe w/sand up to i/18 In.diameter. MenThiem >g.q8 W id e >OA to 2.0 PartIngg -0 to 1/161n.thick(granular) — ® Medium-grained Grains between 1/16 and 3116 In.diameter Thick >24 Pocket -Small,erratic deposit lass than 12 In.size Coarse-grind Grains between 3/16 and 1/4 In.diameter Seam -1/16 to 12 In,thick K7 El silica sand,no pipe Stratified! -Alternating layers of varying material or color = Veryn� se arse- Grains larger than 114 In. Stratum >12 In.thick ® no pipe,filler material grraall Varmd -Annually alternating thin name of sit and clay DISCONTINUITIES: Natural breaks separating the Intact rock material Into discrete units. GEOLOGIC INTERPRETATION Joint Break of geologic origin In the continuity of a body of mck along which there has been no visible dlspiacemenL Deposit type-GLACIAL TILL,ALLUVIUM,FILL.... A group of parallel joints Is called a set and joint sets Intersect to form a joint system.Joints frequently The natural soils are Identified by criteria of Untied Soil Classification System(USCS),with appropriate group symbol In parenthesis form parallel to bedding planes,foliation and cleavage and may be tanned bedding plane joints,foliation joints for each soil description.Fit materials may not be classified by USCS criteria, and cleavage joints accordingly. Shear Discontinuity In which differential movement has taken place Parallel to the discontinuity surface,suffklent to U.S.Standard Series Steve Clear Square Steve Openings produce slckensldes(le.striations and polishing).Shear dlscoOrtuldes may be accompanied by a zone of 12" 3' 3/4" 4 10 40 200 fractured mck up to a few Inches wide. Gravel Sand ORIENTATION: Relative to the horizontal SPACING: Distance between discontinuities Boulders Cobbles Slits and Clays Term D An le(Degrees) Term Inches Coarse Fine Coarse Medium Fine 305 mm 76 mm 19 ram 4.75 mad 2.00 ram 0.43 mm 0.074 ram Law Angle 0. Very do dose Less 2-1 3/4 Low Angle 5.35 Very close 3/4lo2-12 Moderately dipping 3555 Close 2-12 to 8 High Angle 55-85 Moderate 8-24 Vertical 85-90 Wide 24-80 GENERAL NOTES Very Wide 80 1.Logs of subsurface explorations depict sol,rock and groundwater conditions only at the locations specified on the dates Indicated. Subsurface conditions may vary at other locations and at other times. 2.The stratification lines designating the Interface between sol types on the logs of borings and on the subsurface profile represent approximate boundaries.The transition between material may be gradual. 3.Water levels noted on the logs were measured at the times and under the conditions Indicated.During test borings,these water levels could have been affected by the Introduction of water Into the borehole,extraction of tools or other procedures and thus may not reflect actual groundwater level at the test boring location.Grou ndwater level fluctuations may also accur as a result of variations In precipitation,temperature,season,adjacent construction activities and pumping of water supply wells and construction dewatedng systems. 4.Silo lines represent change In geologic unit,dashed lines represents change In USCS classification within same geologic unit.5.BR In the USCS classification column Indicates bedrock. BRIE R 1■ �■r�*/ ASSOCIATES TEST BORING KEY Creating Space Underground