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Protect ARCO #4493 Log of Boring/Monitoring Well <br /> Boring Location 205 N CENTER ST STOCKTON, CA Project No 7G600-022-02 M W_ 3 <br /> Subcontractor and Equipment CENTRAL VALLEY DRILLING Logged By A A I Drown By T Z <br /> Sampling Method HSA,SPLIT SPOON Monitoring Device RAE PID Comments <br /> Start DateAme 2111 99//1300 Finish Date/Time 2/11 199H1345 <br /> First Water (bgs) 16 5 FT Stabilized Water Level (bgs) 14 90 FT <br /> .5 Surface Elevation NA Top Casing Elevation NA <br /> n Boring Abandonment/ <br /> E L C N LITHOLOGIC DESCRIPTION <br /> E Q 6 v " (color, grain size, consistency, moisture, other) Well Construction Details <br /> aain o <br /> 0 As holt - <br /> 7roffic—rated <br /> 1 Fill material from 3" to about 7' Well Box <br /> 2 V V <br /> 3 Neat Grout <br /> Bentonite <br /> 4 Chips <br /> 5 <br /> 6 — #2012 <br /> Sand Pack <br /> 3 7 <br /> 7 8 — <br /> 12 a Fill material, some sand, grovel,bricks, concrete, <br /> g no odor — 4'0 Sch 4 <br /> PVC Blank <br /> Casing <br /> 2 10 SILTY CLAY (CL) (0,5,40,55) DARK BROWN, firm, <br /> 5 11 damp, no odor <br /> 8 0 —_ <br /> 12 <br /> 13 — 4' 020 <br /> _ Screen <br /> 14 : — Casing <br /> t <br /> 7 15 SANDY SILT (ML) (0,20,65,15) DARK GRAY, very well <br /> 1416 sorted, fine grained, wet, no odor — <br /> 22 a — <br /> 17 <br /> 18- <br /> 19 — <br /> 5 20 SILTY SAND (SM) (0,70,20,10) BROWN, fine grained, ver, — <br /> 1221 well sorted, soft, loose, saturated, no odor = <br /> 21 16 —_ <br /> 22 <br /> 23 <br /> 24 <br /> 12 25 End Cap <br /> 25 SILTY SAND (SM) (0,70,20,10) BROWN, fine grained, ver <br /> 25 ^ <br /> 2426 well sorted, soft, loose, saturated, no odor <br /> 27 Total depth of boring = 25 FT <br /> i Sample to 26 1/2 FT <br /> 28 <br /> 29 <br /> a <br /> 30 <br /> 0 0 0 Reviewed By Date <br /> S E C O R Revised By Date Page]of 1 <br />