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WATER WORK <br /> WELL/BORING LOG <br /> PROJECT BJJ TRLCKIMMOCKTON LOCATMN 2431 EAST MARIPOSA ROAD, STOCKTOR CA PROJECT NO 290 <br /> VELL/BORING NII. MW' SURFACE ELEVATION NA ET WELLHEAD ELEVATION NA ET <br /> DATE DRILLED 01/15/9f REVIEWED BY NSA H. KATAOKA RCE 38322 LOGGED BY KRYS M. HARDMAN <br /> DRILLING COMPANY SPECTRUM 01PLORATII3r1 DRILLER RAY LIVINGSTON METHOD HOLLOW STEN AUGER <br /> BORE ]TOLE DIAMETER 8 Tu DEPTH DRILLED8615 FT DEPTH TO WATER, INITIAL 75 FT STATIC __ 70.4 FT <br /> CASING TYPE F480 PVC DIAMETER: 2 Is SCHEDULE 40 INTERVAL_ 0 FT TO 65 FT <br /> SCREEN TYPE F480 PVC DIAMETER - 2- IN SLOT SIZE 9410 IN INTERVAL 65 FT TO 85 FT <br /> FILTER PACK TYPE 02ZIE SILICA SAND INTERVAL_ 63.5 ET TO 85 FT <br /> SURFACE SEAL TYPE 2' HYDRATE BENTONIT-E CHIS/CEMENT-SAND GROUT INTERVAL 0 FT TO 635 FT <br /> NOTES <br /> WELL DEPTH PID SAMPLE ID U.S.G. SOIL DESCRIPTION <br /> DETAIL (FT.) (PPM) BLBVCOM LOG <br /> 0 0-0.5' ASPHALT <br /> 2 /GP0.5-Qs/S 0' GRAVEL FILL <br /> O.S/g0-SS• LEAN TO FAT CLAYi <5.G SND[ >95A FMSJ VH DRY <br /> N DLTNCYj M-H TGHNSSj M-H PLSTj M STIFF-STIFF] BRN <br /> ' 4 GRYj NPO[ ORGANICS) DRY-MSTj WEAK CEMENTATD3K HOMO <br /> 4f CL/CH ELASTIC SILT, <5% SND, )95X FNS, M DRY STRNGTW SLW <br /> 6 8 DLTNCYj L TGHNSSj L PLSTj STIFF] M YLLV BRNj NPQ) <br /> ORGANICSj MSTj WEAK CEMENTATION SOME ORGANICS <br /> $ MH <br /> iQ 5 <br /> 7 <br /> !L5/i5.0-155' LEAN TO FAT CLAY] <57 SND, >957 ice, H—VH DRY <br /> 12 j3 STRNGTH, N DLTNCYj M-H TGHNSSj H—H PLSTj STIFF, DWS <br /> YLLV BRW NPO) ORGANICS, MSTj WEAK CEMENTATIM HOMO <br /> 14 CL/CH <br /> ' g ]5.5-20.5' ELASTIC SILT, <5Y. SNDi >957 FNSj H DRY STRNGTR SLV <br /> 1610 ORGANICS) MSTjGWEAK CEMENTATION:Fj LT OLIVE IRN O <br /> MOTTLEEb StiME ELK <br /> ORGANICS <br /> ' 1$ MH 20.5-21.5/25.0' ELASTIC SILT VITH SAND) UO% SA-SR FN SNDj )90Z Fn <br /> N-H DRY STRNGTHj SLW DLTNCYj M TGHNSSi M PLSTi <br /> 20 5 MOTT <br /> OLIVE BRN, SL PO, MST) VEAK CEMENTATION, <br /> 6 ---- <br /> e 21.5/25.0-26.5/3D.0' LEAN CLAYi <5% SND) >95% FNSi H DRY STRNGTH) N-SLW <br /> 22 KH DLTNCYj M TGHNSSj M—H PLSTj V STIFF] LT OLIVE GRY) <br /> SL PIL MSTj VEAK—M CEMENTATION HOC <br /> 24 26.5/30.0-3EA' ELASTIC SILTi <10% SNDj >go% FNS, M—H DRY STRNGTH; <br /> ' <br /> 9 SLW DLTNCYj M TGHNSSj M PLSTj V STIFF) M YLLV BRN 26 12 CL L LT OLIVE GRY, SL POj DRY—MSTj MOTTLED <br /> 13 <br /> 28 314-31.S/35 0' LEAN TO FAT CLAYj (5/ SNbj >954 STRNGTHj N DLTNCYj M-H. TGHNSSj M-H PLSTV V DRY <br /> IFFj M <br /> I YLLV BRN L LT OLIVE GRYI SL PQ DRY—HST) MOTTLED <br /> MH <br /> 30 ]] <br /> 15 <br /> 16 CL/CH 3[.3/33.0-36.5/400' ELASTIC SILT, <107 SNDj >90% FNS) L—M DRY STRNG1+t <br /> 32 SLV—R DLTNCYj L—M TGHNSSj L—M PLSTj HRA, LT OLIVE] <br /> NPO, MSTj WEAK CEMENTATIONi HOMO, NO RECOVERY FROM <br /> 34 35.0' <br /> ]z <br /> 3b 21 MH <br /> 30 36.5/404-464' SILT WITH SAND, «5X SA-SR, FK PRLY GRDD SNDj >75% <br /> FNSi L-M DRY STRNGTN SLW-R DLTNCYj L TGHNSSj L <br /> 3$ PLSTj HRA LT OLIVE] NPO, ORGANICS; MSTI WEAK CEMIENT- <br /> ATIOW MOTTLED <br /> I 40 15 <br /> 21 <br /> 42 34 ML <br /> PAGE -1-_ 13F 2 <br />