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r <br /> Project Bndgestone/Firestone Stockton Key to Log of Boring <br /> rProject Location 400 North EI Dorado Street Sheet 1 of 1 <br /> . Project Number 11STO <br /> r SAMPLES <br /> Y <br /> a 9 0 N <br /> MATERIAL DESCRIPTION E E E n- 2 REMARKS <br /> L x <br /> yy 1 a �E gip- Y0. co <br />' LLiw ❑,�` E mE mp op � <br /> H z m C7 �Ut Sa ma a <br /> 0 ® F-51 © 0 ® Efl 9911 12 <br />' COLUMN DESCRIPTIONS <br /> Elevation Elevation in feet relative to mean sea level(MSL) Material Description Description of material encountered,may <br /> � <br /> Depth Depth in feet below the ground surface include color,moisture,grain size and density/consistency <br /> 2 <br /> ®0 Well Completion Diagram Schematic of well installation,Sample Tvce Type of sod sample collected at depth intervalmaterials are listed in header block,graphics are explained below <br /> shown,sampler symbols are explained below <br /> Headsoace PID Photoionization device(PID)field sample <br /> ® Samole Number Sample identification number headspace reading in parts per million(ppm) <br /> F5 Blows I foot Number of blows required to advance driven 10 Backaround PID Photmonization device(PID)background <br /> sampler 12 inches beyond first 6-inch interval,or distance noted reading in parts per million(ppm) <br /> using a 140-lb hammer with a 30-Inch drop <br /> t L 11 Drill Ina Proaress Time(in 24-hour clock)at sampling and other <br /> ® Graphic Lou Graphic depiction of subsurface material <br />' <br /> encountered,typical symbols are explained below events during downhole advance <br /> 12 Remarks Comments and observations regarding drilling or <br /> sampling made by driller or field personnel <br />' TYPICAL SOIL GRAPHIC SYMBOLS <br /> SAND(SP) D SAND(SW) F3 SAND wrth silt(SP-SM) SILTY SAND(SM) <br /> 1• <br /> ® Lean CLAY(CL) ® Fat CLAY(CH) ®Silty CLAY(CL) ® CLAYEY SAND(SC) <br /> SILT(M L) 11M Elastic SILT(MH) Clayey SILT(ML) Q•` GRAVEL(GP/GW) <br />' TYPICAL WELL GRAPHIC SYMBOLS TYPICAL SAMPLER GRAPHIC SYMBOLS <br /> r Blank casing in cement IM Blank casing in filter sand ' Modified California split m No recovery zone in <br /> spoon with brass liners sampled interval <br /> Blank casing in grout <br /> (bentonite or Ift] Slotted casing in filter sand Geoprobe Macrocore ® Sample retained <br />' cement-bentonite) (continuous soil sampler) for analysis <br /> Blank casing in bentonite Sand backfill <br /> (pellets or chips) <br /> r � <br /> a OTHER GRAPHIC SYMBOLS GENERAL NOTES <br /> o Q First water encountered at time of drilling(ATD) 1 Sod classifications are based on the Unified Sort Classification System Descriptions <br /> � and stratum fines are interpretive,actual lrthologic changes may be gradual Field <br /> it descriptions may have been modified to reflect results of lab tests <br /> m 1 Static water level measured in well <br /> a 2 Descriptions on these logs apply only at the specific boring locations and at the time <br /> i Change In material properties within a stratum the borings were advanced They are not warranted to be representative of <br /> subsurface conditions at other locations or times <br /> -— Inferred contact between strata or gradational <br />' z change in Irthology o <br /> 0 <br /> ti <br /> $ D <br /> 1 L <br /> R I 'N ORION ENVIRONMENTAL INC <br />