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Project: Bridgestone/Firestone Stockton Key to Log of Boring <br /> Project Location: 400 North EI Dorado Street Street 1 of 1 <br /> LN Project Number: 11 STO-6C <br /> SAMPLES w <br /> Y <br /> U <br /> ++ `o E E REMARKS <br /> m o MATERIAL DESCRIPTION V EaQo <br /> L tm <br /> Lug ❑ a EE M <br /> o m of 0.R mo mo =4 <br /> H Z m 0 �V d X 0. m a O N <br /> Lfl F-2] N ® � © ® ® 10 11 12 <br /> COLUMN DESCRIPTIONS <br /> iLr <br /> 11 Elevation: Elevation in feet relative to mean sea level(MSL). E Material Description: Description of material encountered;may <br /> include color,moisture,grain size,and density/consistency. <br /> F2 Depth, Depth in feet below the ground surface. <br /> ® Well Completion Diagram_; Schematic of well installation; <br /> 16o E3 Sample Tvve: Type of soil sample collected at depth interval materials are listed in header block;graphics are explained below. <br /> shown;sampler symbols are explained below. <br /> ® Headspace PID: Photoionization device(PIR)field sample <br /> ® Sample Number, Sample identification number. headspace reading in parts per million(ppm). <br /> 0 Blows I foot: Number of blows required to advance driven 14 Background PID: Photoionization device(PID)background <br /> i. sampler 12 inches beyond first 6-inch interval,or distance noted, reading in parts per million(ppm). <br /> using a 140-Ib hammer with a 30-inch drop. <br /> 11 Drilling Progress: Time(in 24-hour clock)at sampling and other <br /> ® Graphic Log: Graphic depiction of subsurface material events during downhole advance. <br /> encountered;typical symbols are explained below. <br /> � 12 Remarks: Comments and observations regarding drilling or <br /> sampling made by driller or field personnel. <br /> TYPICAL SOIL GRAPHIC SYMBOLS <br /> SAND(S P) El SAND(SW) SAND with silt(SP-SM) SILTY SAND(SM) <br /> a.. <br /> Lean CLAY(CL) ® Fat CLAY(CH) ®Silty CLAY(CL) CLAYEY SAND(SC) <br /> SILT(ML) Elastic SILT(MN) Clayey SILT(ML) �•� GRAVEL(GPIGW) <br /> L <br /> L+ TYPICAL WELL GRAPHIC SYMBOLS TYPICAL SAMPLER GRAPHIC SYMBOLS <br /> GeoprobeBlank casing in cement M1 Blank casing in filter sand (continuous <br /> s soil sampl-Coreer) <br /> No recovery zone in <br /> (continuous soil sampler) sampled interval <br /> Blank casing in grout Modified California split Sample retained <br /> (bentonite or Slotted casing in filter sand ' spoon with brass liners for analysis <br /> cement-bentonite) <br /> it Blank casing in bentonite Sand backfill <br /> (pellets or chips) <br /> M <br /> 'a OTHER GRAPHIC SYMBOLS GENERAL NOTES <br /> o Q First water encountered at time of drilling(ATD) 1. Soil classifications are based on the Unified Soil Classification System. Descriptions <br /> and stratum lines are interpretive;actual lithologic changes may be gradual. Field <br /> fr r descriptions may have been modified to reflect results of lab tests. <br /> m 1 Static water level measured in well <br /> 2. Descriptions on these logs apply only at the specific boring locations and at the time <br /> Change in material properties within a stratum the borings were advanced. They are not warranted to be representative of <br /> r subsurface conditions at other locations or times. <br /> Y <br /> V � <br /> 3: ---Inferred contact between strata or gradabonat <br /> Z change in lithology <br /> 0 <br /> W <br /> 0 <br /> ltw � <br /> 0 <br /> m <br /> �� R1 I N ORION ENVIRONMENTAL INC. <br />