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WATERWORK WELL/BORING LOG PROJECT CORRIGAN PROPERTY LOCATION 620 SAN JUAN, StDCKTCK CA PRIIJECT NII. 381 VELL/913RING NII. NV2 SURFACE ELEVATION _ NS-- FT {,WELLHEAD ELEVATMN NS EI DATE DRILLED 03/25/91 REVIEVED BY RUSSELL V. JUNCAL RG 3864 LOGGED BY LOIS FRANTZ DRILLING COMPANY EXCELTECH DRILLER 'ENE NUNES METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 9 IN DEPTH DRILLED 27 FT DEPTH TO WATER INITIAL 10 FT STATIC ,. 4.7 „ FT CASING TYPE F480 PVC DIAMETER 2 IN SCHEDULE 40 INTERVAL 0 FT TO 5 FT SCREEN TYPE F480 PVC DIAMETER 2 IN SLOT SIZE 0.010 IN INTERVAL 5 FT TO 25 FT FELTER PACK TYPE 2/12 SILICA SAND INTERVAL 2.5 EZ TO 25 FT SURFACE SEAL TYPE NEAT CEMENT INTERVAL 0 Fr TO 2 FT NOTES _6' BENTONITE SEAL ABOVE SAND INJER1l& 2 _ FT To 2.5 FT VELL I DEPTH I PID AMPLE IDI USM SOIL DESCRIPTION DETAIL (FT) (PPM) LOWCOUNJ LOG 0 2 4 6 10 12 14 — I6 — 18 20 22 24 26 28 30 32 34 36 38 40 42 1 397 I "A' ASPHALT 0.4-5/6.5' LEAN CLAY VITH SAND] QVA FN PRLY GRDD SNDI )WA FNSj M -H CL DRY STRNGTHj SLV DLTNCYi L -M TGHNSSi H PLST) M YLLW BRNr NPD) ORGANICS] MST) VEAK-STRNG MCL REACTION) MOTTLED 'VHITE 75/6.5-10/IL5' ELASTIC SILT) (15Z V FN, PRLY GRDD SNIb >852 FNSj L -H DRY 120 2 STRNGTHi N-SLV DLTNCYi L-44 TGHNSS) M PLSTj M YLLV BRN- ARK GRYi M-STRNG PO; MST-WETI N HCL REACTIIIN NH 10/1L5-16' LEAN CLAY; (5% V FN, PRLY GRDD SND) >95X FNS) M -H DRY STRNGTK N-SLV DLTNCYj L -M TGHNSS; H PLSTj LT OLIVEt NPEb VETj N HCL REACTIONI MOTTLED RUSTY 9 14 12 CL 5 9 14 SP 9 14 18 CL 9 15 19 16-20/2L5' POORLY GRADED SAND; >957: SA -SR, FN -M PRLY GRDD SNIA C= FNS] N DRY STRNGT4 R DLTNCY) LT OLIVE] NPO YETI N HCL REA CT111N 20/2L5-25' LEAN CLAY) (15% V FN -FN SNDr >857 FNS] M -H DRY STRNGTFh SLV DLTNCYI L -M TGHNM M -H PLSTj M YLLW BRM NPO) VETj N HCL REACTION RUSSELL W. JUNCAL No. 3864 , ri PAGE i OF i