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KEY TO EXPLORATORY BORING LOGS ® SOIL SAMPLE LOCATION T GRRST ROkJN®V�l�TER R EILd01+1-COINhIINED PENETRATION: Sample drive hammer weight-14®pounds failing 30 inchas. Slows required to drive the sampler I foot are indicated on the logs. CONTAMINATION: Soil samples and cuttings were scram with a Photovac "Tl P" (PID' detector. Soil and water samples were collected In mason jars, agitated, and then screened using the "TIP" daleclor. Cuttings were screened in situ as they were brought to surface by the augers. Soil to certified laboratory analysis iS were screa'1ed prior _ � sarnplas collected for cue preservation i SOIL CLASS(Fl CAT1 ON CHART ASTM D 2487 �- Sal ClessificittlOn Critens for Assigning Group Symbols and Group Names Using Laboratory Tests" Group Group Name i - Symbol -< 3 - - -- -Gravels Clean Gravels Cur 4 and 1 t Cc 5 3E GW Well-graded gravefF 1 More than 50%retained on No. More than 50%Of coarse Less than 5%lines c Cu<4 and/or 1>Cc>3E GP Poorly graded gravel'` 200 sieve fraclion relained on No.4 - sieve Gravels with Fines More Fines classify as ML or MH GM Silty gravefFaN- than 12 Y,fines° Fines clasaify as CL or CH GC Clayey gravelF-a•" Sands Clean Sands Cu t 5 and t s Cc<-3F _ Sw Wel-gfaded sand 60% or more 4S coarse Less than 5%fines° Cu¢5 and/or 1 a Cc n 3E SP Poorly graded sand' ; fraction passes No.4 sieve Sands with Fines Fines classify as ML or MH SM Silty sand°.a.J A'o,e than 12%fines° - — a.N., -- Fines classify ess CL or CH SC _Clayey sand - Fine-Grained Sals Silts and Clays inorganic P1 n 7 and plots on or above W lir%J CL Lean clay" ,"' 50%or more passes the No. Liquid limit less than 50 PI<4 or plots below'A'line-' ML S!ISw•L.All 200 slave organic Liquid limit- oven dried Organic Liquid!imil= not deed c 0.75-- --OL -.Organic siltx•LMy° Silts and Clays - inorganic P'plots on or above"A'line _ CH Fat clay"-L M Liquid limit 50 or more PI plots below'A'line MH Elastic sill" organic Liquid lima oven dried OH Organic cls •1-"-` V wtl]Emit-not CTed c 0.75 L M.o Highly organic soils--- Primarily organic matter,dark in colo+,and organic odor PT Peat A Based on the material passing The 3-in.(75-mm) E 0 +� r,If soil contains 30% plus No. 200, pre- siev" Cu-DW/D,,, - dominantly gravel,add'gravelly'to group name. D,a x D" 9 It Raid sample contained Cobbtas or boulders,or s It soil contains z a 15%sand.add'with sand'to H PI a 4 and plots on or shave'A'line. both, add 'with cobble$ or boulders, or both' to group name. °PIC 4 r plp!s below'A']Ina. group name. °If fir•.eS Claas,fy as CL-ML. use dual symbol 'PI plots on or above'A-line. a Gravels with 5 W 12% fines require dual GC.GM,or SC-SM °PI plot-3 below'A'line. symbols: " lines are organic.add 'with organic lines' to GW-GM we11-9raded gravel with silt group name. GW-GC well-graded gravel wiin city 'if so-'contains 0 15%gravel, add -with gravei- GP4M poorly graded gravel wil^silt 10 group name GP_GC ppoiiy graded grave'with clay I If Atterbern limits plot in hatched area, sail is a °Sands with 5 t0 12% fines require dual CL-ML,silty clay symbols: "C sol' c°nlains 15 to 29% plus No 200, add SW-SM well-graded santd with sill 'with sand' or -with yiavei,- whichevoi ih pie- SW-SC wall-graded send with clay dumrnanl SP-SM poorly graded sand with silt L if soil contains a 30 z plus No 200. pr9- SP-SC poorty graded sand wah clay domtn@ntiy sand.add'sandy-to group name 1