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GROUND ZERO ANALYSIS LOG OF BORING SBI • PROJECT _9AABBARO LOCATION 640 NORTH EL DORADO STREET STO KTON C1256 CT N PROJECT O DATE DRILLED 01/19/99 LOGGED BY SEAN GARVEY REVIEWED BY PRRODE P. O R• No s7 DRILLING COMPANY 59 FISCH ENVIRONMENTA DRILLER RICK RERTOIINO METHOD DIRECT PUSH BORE HOLE DIAMETER 7 IN DEPTH DRILLED - 31 FT DEPTH TO WATER INITIAL 23 FT STATIC 16 FT CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL FT TO FT SCREEN TYPE NA DIAMETER IN SLOT SIZE IN INTERVAL - FT TO FT FILTER PACK TYPE NA INTERVAL FT TO FT SURFACE SEAL TYPE NEAT CFMEµ__ INTERVAL FT TO FT COMMENTS PAGE I OFA_ WELL DEPTH PID U S C DETAIL Fi PPM BLOWCOUNT LOC DESCRIPTION 0-3 CONCRETE 2 3 -6/9 ELASTIC SILT (MH) 5% FN-M SA PRLY GRDD SND 952. FNS SLW DLTNCY M-H TGHNSS L PLST DRK BRN NPO MST MH 4 0 6 6/9-11/14 SANDY CLAY (CL) 50% FN SA, PRLY GRDD SNO 50% FNS, 8 SLW DLTNCY M TGHNSS M-H PLST TAN NPO DRY-MST 10 0 CL 12 11/14-16/19 POORLY GRADED SAND WITH CLAY (SP-SC) 90% FN A-SA, PRLY GRDD SND 10 % FNS SLW DLTNCY L-M PLST TAN SL-M PO DRY-MST • 14 20 SP-SC 16 GASBI-16 16/19-21/24 SILT WITH SAND (ML) 15% FN A-SA PRLY GROD SND 85% FNS SLW DLTNCY L-M TGHNSS L-M PLST GRY MPO 7g MST 20 960 ML GAS81-21 21/24-26/29 ELASTIC SILT (MH) 5% FN A PRLY GRDD SND 95% FNS 22 SLW DLTNCY M TGHNSS M PLST CRY SL PO MST —24- 5 — HYDROPUNCH GROUNDWATER SAMPLE COLLECTED AT 26 MH 26 GASBI-26 26/29-3075 WELL GRADED SAND (SW) 95-1007. M-CRS SA-SR W GRDD GASBI-25GW SNO 0-5% FNS R DL7NCY L TGHNSS N PLST BRN-GRY 28 NPO WET, WEAK CEMENTATION 2 GASBI-30 SW 30 2 CL 3075-31 LEAN CLAY (CL) 5% FN A PRLY GRDD SND 95% FNS N-SLW DLTNCY, M-H TGHNSS, M-H PLST, TAN NPO, WET 32 134— D GFO�o JOHN P NA 36 a L e r e N 1411; 6195 c 38 /J Q2 OF CAL��O 40