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WATERWORK <br /> WELL/BURING LAG <br /> ' PROJECT BJJ TRUCKING/STOCKTON LOCATION 2431 EAST MARIPOSA ROAD, STOCKTON, CA PROJECT NO 290 <br /> WELL/BORING No ASB1 SURFACE ELEVATION NA WELLHEAD ELEVATION NA FT <br /> DATE DRILLED 01/15/91 REVIEWED BY NORA H KATAOKA RCE 39322 LOGGED BY KRYS M HARDMAN <br /> DRILLING COMPANY SPECTRUM EXPLORATIDN DRILLER RAY L]VINGSTON METHOD HOLLOW STEM AUGER <br /> ' BORE HOLE DIAMETER —_ 6 IN DEPTH DRILLED 515 FT DEPTH TO WATER INITIAL _ _ --_ FT STATIC FT <br /> CASING TYPE DIAMETER TN SCHEDULE INTERVAL FT TO FT <br /> SCREEN TYPE DIAMETER _ IN SLOT SIZE IN INTERVAL - FT TO - T FT <br /> ' FILTER PACK TYPE INTERVAL FT TO r1 SURFACE SEAL TYPE CEMENT/SAND GROUT <br /> NOTES INTERVAL - - 0 FT TO 515 FT <br /> WELL DEPTH PID SAMPLE ID USG SOIL DESCRIPTION <br /> ' DETAIL (FT) (PPM) LOWCOUN LOG <br /> 0 0-05' ASPHALT <br /> 2 05-05/50, GRAVEL FILL <br /> 7GP05/50-60' LEAN TO FAT CLAY, <a/ SND, >98/ FNSI H-VH DRY STRNGTHN DLTNCY, M-H TGHNSS, M-H PLST, DUSKY YLLW BRNNPOI4 ORGANICS; MSTI WEAK CEMENTATIONHOMO <br /> 60-65/100' SILTI <5/ SNDI 95/ FNSI L-M DRY STRNGTH) SLW-R DLTNCYI <br /> 6 L TGHNSS) L PLST) M YLLW BftN NPO; MSTI WEAK CEMENT- <br /> ML ATION HOMO <br /> t 65/I00-110' LEAN TO FAT CLAY, «/ SND, 98/ FNS H-VH DRY STRNGTH; <br /> N DLTNCY] M-H TGHNSSI M-H PLST] DUSKY YLLW BRN; NPQ; <br /> ORGANICS; MST) WEAK CEMENTATION HOMI]) NO RECOVERY <br /> 10 CL/CH FROM 10 0-10 5' <br /> 110-16 0' SILT, <15A SND; >85/. FNSI L-M DRY STRNGTHI N-SLW <br /> 12 DLTNCYI L-M TGHNSSI L-M PLST, M YLLW BRN; NPO; MSTI <br /> WEAK CEMENTATION) HOMO; NO RECOVERY FROM 150-155' <br /> 14 ML <br /> ' 16 160-210' WELL GRADED SAND WITH SILT) >B5/ SA-SR, FN-CRS, WELL <br /> GRDD SND; <15/ FNS, NPO; MSTI WEAK CEMENTATION, HOMO <br /> 18 SW-SM <br /> 20 <br /> 210-260' LEAN CLAYI U0/ SND) >907 FNS; M-H DRY STRNGTHI N-SLW <br /> ' 22 DLTNCY; M TGHNSS; M PLST; LT OLIVE GRY; NPD; DRY-MSTI <br /> WEAK CEHENTATION HOM05 NO RECOVERY FROM 250'r SOME <br /> 24 CL MOTTLING <br /> ' 26 260-310' LEAN TO FAT CLAY; <5/ SND; >95/ FNS; H DRY STRNGTW <br /> N DLTNCY; M TGHNSS; M-H PLST; LT OLIVE GRY) NPO; DRY- <br /> 28 CL/CH MSTI WEAK CEMENTATION, NO RECOVERY FROM 300' <br /> ' 30 <br /> 310-315/350' SANDY ELASTIC SILTI <45/ SA-SR, WELL GRDD SND) >55/ <br /> 32 ;MHj FNS, L�-M DRY STRNGTH) SLW DLTNCYI M TGHNSS{ L-M PLST) <br /> LT OLIVE GRY; NPO; DRY) WEAK CEMENTATION <br /> ' 34 315/350-355' LEAN TO FAT CLAYI <106 SNDA >90/ FNSI H DRY STRNGTHI <br /> N DLTNCY; M-H TGHNSSI H-H PLST; M YLLW BRN SL POI <br /> 36 <br /> DRY-MST) WEAK CEMENTATION <br /> ' 38 355-415/45' SILT WITH SAND; <15/ SND; >85/ FNSI L-M DRY STRNGTHI <br /> ML SLW-R DLTNCY) L TGHNSS) L PLST) M YLLW BRN SL POJ <br /> 40 DRYS WEAK CEMENTATION <br /> 42 <br /> ' CH <br /> PAGE 1 CIF—a <br />