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Project: ARCO #4493 Log of Boring/Monitoring Well: <br /> Boring Location: 205 N. CENTER ST. STOCKTON, CA. Project No.: 7G600-022-02 MW- 2 <br /> Subcontractor and Equipment: CENTRAL VALLEY DRILLING Logged By. A.A. I Drawn By. T.Z. <br /> AM Sampling Method: HSA,SPLIT SPOON Monitoring Device: RAE PID Comments: <br /> qP Start Date/Time: 2/11 Z99//0750 Finish Date/Time: 2/11/99//0900 <br /> First Water (bgs): 18 FT. Stabilized Water Level (bgs): 14.66 FT. <br /> ° _ o Surface Elevation: NA Top Casing Elevation: NA <br /> E oUC <br /> Boring Abandonment/ <br /> LITHOLOGIC DESCRIPTION <br /> E c o P (color, groin size, consistency, moisture, other) Well Construction Details <br /> y m <br /> 0 Asplhalt(0-47 Fill material = 1 <br /> Traffic-rated <br /> 1 Fill material from 4" to about 6' Well Box <br /> 2 v V <br /> Neat Grout <br /> 3 <br /> Bentonite <br /> 4 Chips <br /> 7 5 — <br /> 13 <br /> 0800 18 0 6 00, SILTY CLAY (CH) (0,0,10,90) DARK BROWN TO LIGHT Sa-*- 2 <br /> OPack <br /> 7 BROWN, very fine grained, very well sorted, very firm, — <br /> 8 no odor = <br /> 9 4*0 Sch.4 <br /> PVC Blank <br /> Casing <br /> 8 10 SILTY CLAY (ML) (0,5,25,60) DARK TO LIGHT BROWN, <br /> 21 31 fine to very fine grained, moderately sorted, firm, <br /> 0810 32 0 no odor <br /> 12 <br /> 13 — 4" .020 <br /> Screen <br /> 14 <br /> Casing <br /> — <br /> 15 15 SILTY CLAY (ML) (0,5,15,80) DARK BROWN, fine grained, — <br /> 3716 very well sorted, no odor — <br /> 0830 65 0 —_ <br /> 17 <br /> 19 — <br /> 5 20 — <br /> 15 21 SILTY SAND (SM) (0,70,20,10) BROWN, fine grained, well <br /> 0845 30 o sorted, very loose, saturated, no odor _ <br /> 22 <br /> 23 <br /> 9 24 — <br /> 12 25 SILTY SAND (SM) (0,70,20,10) BROWN, fine grained, well End Cap <br /> 25 sorted, loose, saturated, no odor <br /> 0900 40 0 26 <br /> 27 Total depth of boring = 25 FT. <br /> Sample to 26 1/2 FT, <br /> 2121- <br /> 29- <br /> 1 <br /> 829 <br /> 30 <br /> Reviewed By. Date: <br /> SECOR °°° <br /> Revised By. Dote: Page 1 of 1 <br />