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L L L E 2i 2 31 3' 4( 4- 5C 5° 6 �G 70 DRILLER Chuck Gerrlsh DRILLING CO Vironex DRILLING METHOD Geoprobe SAMPLING METHOD Large Bore Sample PROJECT NAME Stockton Metropolitan Airport Aviation Fuel Storage Area LOCATION Stockton Metropolitan Airport, California PROJECT NO 765436 PAGE 1 OF 1 INTERNATIONAL DRAWN BYJ J R K ICHECKED By L Z77. FILE NAME & TECHNOLOGY DATE 1 1-26-96 IIAPPROVED By 1 r'R R 2 I -Z0 6 DISK NUMBER S4A—SB4(SJC2) CORPORATION W SOIL BORING SJA—SB4 > Lo m � w � o �, r. z a co DRILLING REMARKS CL E U o _ RELO GEOLOGST RD Smith DATE BEGAN 1/3/96CL x CHECKED BY RE), Smith _ DATE FINISHED 1 4 m a APPROVED BY Tip R 'LIZ 0 9 b Sl RFACE ELEV ft >-w 0, a _?Z TOTAL DEPTH 56 0 ft PT SIL Yd SAND moderate brown SlkPubly moist soft nonplastic 80X sat Sample Sol Bkg 2501 12.7 20% fine sand 050 6/24 mf Sample Color changes to pale brown strong hydrocarbon odor detected sand 010 12/24 Sol Bkg. >2500 12 content increase to 141t. Sample 140 015 24/24 „ Poorly Graded SAND dark greenish gray moist soft, 95X Me to very On Sol Bkg. >2500 11 sP sand• 5R slL strong hydrocarbon odor Sample 190 020 24/24 SILT brownish gray slightly moist medium stiff- medium plastidty 9O X Sol Bkg >2500 10 at 10% rine sand. NA / Sample Thin Cine sand lense to 24 5f sat becomes moderately soft calor 025 24/24 Sol Bkg 2200 17 change to olive gray clay content Increases hydrocarbon odor Sampo ml Sit becomes medium stiff` color changes to dark yellowish brown I a3o 24 a /2 Soo Bkg 100 33 say content decrease hydrocarbon odor Sample Color changes to pole yellowish brown sand content increases low plasticity 0.36 N/A Poor recd Soil Sample handpacked Bkg. Sample P 850 3 7 slight slight hydrocarbon odor detected ow /24 Sol Bkg. No recoveryff at 45 60 0 00 SILTY SAND moderate yellowish brown moist medium dense 55% poorly graded line sand 45% alt, low plasticity no hydrocarbon odor detected 046 0/24 Pin broke o probe tip Color changes to dark yellowish brown sit becomes nodular very stiff- nonplastk- Sample am Sit lens* to 49 5ft 930 22/24 soa Bkg. 480 00 First encountered Q groundwater at 54 ft Sod Color changes to moderate yellowish brown wet soft 80% One micaceous 056 22/24 Sample Groundwater sample Bkg. 0.8 00 sand- 20R nit stiff• nonplaatie SII t h carbon odor detected 'n roundwater sample, 56 4 at ab it TOTAL DEPTH 56 0 FEET PAGE 1 OF 1 INTERNATIONAL DRAWN BYJ J R K ICHECKED By L Z77. FILE NAME & TECHNOLOGY DATE 1 1-26-96 IIAPPROVED By 1 r'R R 2 I -Z0 6 DISK NUMBER S4A—SB4(SJC2) CORPORATION