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GROUND ZERO ANALYSIS LOG OF WELL MW2 PROJECT TUFF BOY TRAILERS LOCATION 5151 ALMONDWOOD DRIVE MANTECA CA PROJECT NO 335 DATE DRILLED 01/22/01 LOGGED BY SEAN GARVEY _ REVIEWED BY JOHN P LANE RG No 6795 DRILLING COMPANY VAW WELL DRILLING DRILLER KEVIN CROSS METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 IN DEPTH DRILLED 20 FT DEPTH TO WATER INITIAL 7 _ FT STATIC 66 FT CASING TYPE PVC E480 DIAMETER 2 -1N SCHEDULE 40 INTERVAL 0 FT TO 5 FT SCREEN TYPE PyC F48o DIAMETER 2 IN SLOT SIZE 0.010 IN INTERVAL 5 FT TO 20 FT FILTER PACK TYPE 2/12 SAND INTERVAL 3 ET TO _ 20 FT- SURFACE SEAL TYPE CONCRETE FLUSH WELL BOX WITH BENTONITE INTERVAL 0 FT TO 3 FT- COMMENTS LCOMMENTS PAGE I OFA_ WELL DEPTH FID SAMPLE ID U S C DESCRIPTION DETAIL FT (PPM) GLOWCOUNT LOG r 0-6/9 5' WELL GRADED SAND (SW) 90-95% FN-CRS, A-SA W GRDD 2 SND, 5-10% FNS, LS, BRN, NPO, MST SW 4 _ 0 3 5 6 s 8 6/9 5-11/15' SILTY CLAY (CH/MH) 0-10% FN A SND, 90-100% FNS H DRY STRNGTH, N-SLW DLTNCY, H TGHNSS, H PLST, V STIFF, BRN, NPO, WET TBT-MW2-10 r/ 10 17 O 7 CH/MH —k 23 �k 12 11/15-15 5' WELL GRADED SAND (SW) >95X FN-CRS, A-SA, W GRDO _ SND, <5% FNS, M DNS, BRN, WET I— 14 I 6 sw _ 0 12 20 1s 15 5-21' SILT (ML) <5X FN, A SND, >95X FNS, N DRY STRNGTH, R DLTNCY, L TGHNSS, N PLST, V STIFF TO HRD, BRN, NPO, WET ML L � TBT-MW2-20 --- 20 0 1315 33 22 24- -26- 28- -30- 32- -34 42628303234 • 36- -38- 40 40