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Project: STONEBRIDGE D PMENT — LATHROP, CA. W log of Boring/Monitoring Well: <br /> Boring Location: SEE ATTACHED MAP I Project No.: 70139-004-02 GP- 10 <br /> Subcontractor and Equipment: TEG/GEOPROBE Logged By. C. MELANCON I Drown By. T.Z. <br /> Sampling Method: CONTINUOUS CORE Monitoring Device: OVM 5808 PID Comments: <br /> Finish Date/rme: 31 99 13:30 13:30 Collected pie (3 <br /> start Date�me: 3/31/99//12:30 3 Groundwater sample (3/31/99) <br /> First water (bgs): �8' Stabilized Water Level (bgs): 9.40 <br /> a Surface Elevation: 13.4' MSL Top Casing Elevation: NA <br /> Boring Abandonment/ <br /> v a 4 LITHOLOGIC DESCRIPTION Well Construction Details <br /> o. o <br /> to (color, grain size, consistency, moisture, other) <br /> EE o O u u N O <br /> ' 0 DARK BROWN (10YR-3/3) SAND (SP) with trace sill. <br /> 1 Sand is fine—grained, loose, moist (0,95,5,0) <br /> 2 GRAYISH BROWN (2.5YR-5/2 SANDY SILT (ML) Sand <br /> ' 2 3 is fine—grained, stl <br /> iff, moist, ow plasticity 0,40,60,0) <br /> 4 <br /> 2 5 <br /> ' 6 Grout <br /> Backfilled with 5% <br /> 7 DARK GRAYISH BROWN (2.5YR-5/2) SILTY SAND (SM) Bentonite/Cement <br /> ' 2 T Sand is fine—grained, dense, moist (0,80,20,0) <br /> B <br /> 9 —_ <br /> ' z 10BROWN (10YR-5/3) SAND (SP) with trace lit. <br /> Sand is fine—grained, dense, wet (0,90,10,0 <br /> 11 <br /> LIGHT BROWNISH GRAY (10YR-6/2) SILTY CLAY (CL) <br /> ' 12 with trace fine—grained, very stiff, moist, moderate <br /> plasticity (0,5,35,60) <br /> 13 <br /> 14 <br /> 2 15 <br /> 16 <br /> ' 17 <br /> 18 <br /> ' 19 <br /> 2 20 <br /> End of baring 20' <br /> 21 <br /> ' 22- <br /> 23- <br /> 24- <br /> 25- <br /> 26- <br /> 27 <br /> 22324252627 <br /> i <br /> a 28 <br /> F9 <br /> 8 29 <br /> 30 <br /> SECOR000 Reviewed Date: <br /> Revised By Date: Page-1-0 <br /> 'I <br />