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Protect ARCO #4493 Log of Bonng/Monitaring Well Boring Locolton 205 N CENTER ST STOCKTON, CA Project No 713600-022-02 MW- 2 Subcontractor and Equipment CENTRAL VALLEY DRILLING Logged By A A Drawn By T Z Sampling tAethod HSA,SPLIT SPOON monitoring Device RAE PID Comments 4 Start Date/Time 2/11/99/ 0750 Finish Date/Time 21111991 0900 First Water (bgs) 18 FT Stabilized Water Level (bgs) 14 66 FT ki o Surface Elevation NA Top Casing Elevation NA v u Boring Abandonment/ In a V Q N --JLITHOLOGIC DESCRIPTIONCL Well Construction Details (color, grain size, consistency, moisture, other) # a to U m d o a '2 n 3 D00 As halt -4 ill material = 1 Traffic-rated 1 Fill material from 4" to about 6' v v Well Box 2 v v Neot Grout 3 Bentonite 4 Chips 00 7 5 —_ 13 6 ;2012 0800 18 0 SILTY CLAY (CH) (0,0,10,90) DARK BROWN TO LIGHT — Sand Pack 7 BROWN, very fine grained, very well sorted, very firm, - 8 no odor — g 4"0 Sch 4 PVC Blank Casing 8 10 SILTY CLAY (ML) (0,5,25,60) DARK TO LIGHT BROWN, — 21 11 fine to very fine grained, moderately sorted, firm. — 0810 32 o no odor 112- 13- - 4" 020 _ Screen 14 T — Casing , 1 15 15 SILTY CLAY (ML) (0,5,15,80) DARK BROWN, fine grained, 37 16 very well sorted, no odor — 0830 65 0 —_ 17 18 T — 19 — 5 20- 15 21 SILTY SAND (SM) (0,70,20,10) BROWN, fine grained, well- 0845 30 o sorted, very loose, saturated, no odor _ 22 23 — 24 — 12 25 SILTY SAND (SM) (0,70,20,10) BROWN, fine grained, well 1 End Cap 252fi sorted, loose, saturated, no odor 0900 40 0 27 Total depth of burin = 25 FT Sample to 26 1/2 F� 28 29 a 30 000 Reviewed By Date S E C O R Revised By Dote Page—Loi-1-