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C) <br /> 1 <br /> N TERRA VAC CORPORATION LOG OF EXPLORATORY BORING GP-1 <br /> 1651 Alvarado Street, San Leandro, CA 94577 Page 1 of I <br /> co cn <br /> Q. <br /> Q x a m MATERIALS DESCRIPTION <br /> ai m cars o m cn <br /> SM <br /> 3 SAND, fine to medium, silt (20-30X), clay (10-35X), olive brown <br /> (2.5Y4/3), damp <br /> t <br />{ N/A GPI-5.0 5- <br /> GPI-6.0 <br /> 1.5 GPI-7.0 <br /> i <br /> AS above <br /> N/A GPI-9.0 <br /> GP1-10.0 10 AS above, dark greenish gray (4/10Y) <br /> 4.7 GP1-11.0 SP <br /> SAND, fine, fines (trace), dark greenish gray (4/SOY), wet <br /> ML <br /> SILT, clay (10-20%). sand (trace), fine, dark greenish gray <br /> N/A GPt-13.0 (4/10Y), damp <br /> GPI-14.0 <br /> 1.4 GPI-15.0 �500CL - - - - -- - - - - - --- <br /> CLAY, silt (15-25%), dark greenish gray (4/10Y), wet, slightly <br /> plastic <br /> ML <br /> 60.8 NIA 6P1-39.5 SILT, clay (trace), olive gray (5Y4/2), wet to moist <br /> 20- <br /> t27.3 N/A GPI-23.5 AS above <br /> 25 Bottom of boring at 24 feet. <br /> i <br /> I <br /> 30 <br /> PROJECT Chevron SS /19-4054 DRILLING COMPANY ._Kvilhaug well Drilling I <br /> LOCATION 2103 Country Club Blvd., Stockton DATE DRILLED September 30, 1997 j <br /> JOB NUMBER 30-02t2 SURFACE ELEVATION Not surveyed <br /> GEOLOGIST Clitf M. Garratt TOTAL DEPTH OF HOLE 24 Feet <br /> DRILL RIG 1-75"0 Geoprobe FIRST OBSERVED GM 10.75 Feet j <br />