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■ Project: STONEBRIDGE DEMPMENT — LATHROP, CA. Log of Boring/Monitoring <br /> ­­Wel: <br /> Boring Locofon: SEE ATTACHED MAP Project No 70139-004-02 GP-8 <br /> ' Subcmtroctor and Equ pment: TEG/GEOPROBE Logged By C. MELANCON Drawn By. T.Z. <br /> Sampling Method: CONTINUOUS CORE Monitoring Device: OVM 5808 PID Comments <br /> Finish Date/Time: 3 30 99 11:00 11:00 Collected GP-8 <br /> Start Date/Time: 3/30/991/10:00 Coll <br /> sample (3/31/99) <br /> Frsl Water (bgs): —9,5' Stobilized Water Level (bgs): 10.75 <br /> Surface Elevation: 14.8' MSL Tap Casing Elevation: NA <br /> Boring Abandonment/ <br /> 0 a LITHOLOGIC DESCRIPTION <br /> Well Construction Details <br /> (color, grain size, consistency, moisture, other) <br /> ' D GRAYISH BROWN (10YR-5/2) SAND (SP) with trace <br /> 1 silt. Sand is fine—grained, loose, 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, moist, low plasticity 0,4 .60,0) <br /> 4 <br /> 2 5 <br /> Grout <br /> 6 Backfilled with 5% <br /> ' DARK GRAYISH BROWN (1OYR-4/2) SILTY SAND (SM) Bentonite/Cement <br /> 2 7 Sand is fine—grained, medium dense, moist, low <br /> g plasticity (0,70,30,0) <br /> 9 T <br /> ' 3 10 <br /> 11 T LIGHT BROWNISH GRAY (10YR-6/2) SILTY CLAY (CL) <br /> ' 2 12 with trace fine—grained sand, very stiff, moist, <br /> moderate plasticity (0,5,35,60) <br /> 13 <br /> ' 14 BROWN (tOYR-5/3) SANDY SILT (ML) with trace <br /> clay. Sand is fine—grained, stiff, moist weak subangula <br /> 2 15 subangular blocky structure (0,30,65,5) <br /> z 16 LIGHT OLIVE BROWN 2.SYR-5/3 SAND SP <br /> Sand is fine—grained, medium dense, we ( ,100,0,0) <br /> ' 17 YELLOWISH BROWN (tOYR-5/4) SANDY CLAY (CL) with <br /> 18 silt. Sand is fine—grained, ver stiff, moist, low to <br /> medium plasticity(0,30, 20,50 <br /> ' 19 <br /> 2 <br /> 20 <br /> End of boring 20' <br /> ' 21 <br /> 22 <br /> 23 <br /> ' 24 <br /> 25 <br /> ' <br /> 26 <br /> 27- <br /> 28- <br /> 29- <br /> 1 <br /> 72829 <br /> 30 <br /> ' ! SECOR 000 Reviewed _ S Dale: T(Sy <br /> Revised B)r. Date: Page_j_ot 1 <br />