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Proiect: STONEBRIDGE D PMENT — LATHROP, CA. log of Boring/Monitoring Well: <br /> Boring locatim SEE ATTACHED MAP Project No.: 70139-004-02 GP- 9 <br /> ' Subcontractor and EcIpment'. TEG/GEOPROBE logged By. C. MELANCON Drawn BY. T.Z. <br /> Sampling Method: CONTINUOUS CORE Monitoring Device: OVM 5808 PID Comments: <br /> g 12:00 Collected GP-9 <br /> Start Date/Time: 3 31 99 11:00 Finish oate/Tme: 31 31 99 12:00 roundwater sample <br /> ' First Water (bgs): —10' Stabilized Water Level (bas): 12.85 <br /> Surface Elevation: 15.7' MSL Top Casing Elevation: NA <br /> Boring E o <br /> Abandonment/ <br /> ' z' E LITHOLOGIC DESCRIPTION <br /> Well Construction Details <br /> :5o 2 t (color, grain size, consistency, moisture, other) <br /> E o <br /> ' 0 DARK BROWN (tOYR-3/3) SAND (SP) with trace silt. <br /> 1 Sand is fine—grained, mdeium dense, moist (0,95,5,0) <br /> 2 <br /> ' 2 3 GRAYISH BROWN (2.5YR-5//2) SANDY SILT (ML) Sand <br /> is fine—grained, stiff, dry f0 moist, low plasticity, weak <br /> 4 subangular blocky soil structure (0,40,60,0) <br /> 2 5 <br /> Grout <br /> 6 Backfilledith 5% <br /> Bentonite/Cement <br /> ' 7 <br /> DARK GRAYISH BROWN (2.5YR-5/2) SILTY SAND (SM) <br /> 2 e Sand is fine—grained, dense, moist (0,80,20,0) <br /> 9 <br /> ' Moist to wet of —10' <br /> 2 10 <br /> 11 <br /> LIGHT BROWNISH GRAY (10YR-6/2) SILTY CLAY (CL) <br /> 12 with trace Tine—grained, very, stiff, moist, moderate <br /> lasticityy, some rootholes with iron oxide stain <br /> 13 (p0,5,35,60) <br /> ' 14 <br /> 15 <br /> 3 16 LIGHT GRAYISH BROWN (2.5YR-5/ SAND SSP) <br /> Sand is fine—grained, dense, wet 100,0,0) <br /> ' 17 <br /> 18 <br /> ' 19 <br /> 20 <br /> End of baring 20' <br /> 21 <br /> ' 22- <br /> 23- <br /> 24- <br /> 25 <br /> 2232425 <br /> IN <br /> ' <br /> at 26 <br /> 27 <br /> i <br /> r< 28 <br /> ' 8 29 <br /> 30 <br /> SECOR Reviewed Date: <br /> 000 <br /> Revised By. Date: Pagei—of� <br />