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2 � - <br /> TERRA vac CORPORATION LOG OF EXPLORATORY BORING OP-3 <br /> 1651 Alvarado Street, San Leandro, CA 94577 Page 1 of 1 <br /> ' = p w NfLn <br /> J <br /> Z W <br /> a 3C a a m MATERIALS DESCRIPTION <br /> x Lu a >- <br /> d m U7 O N in <br /> CL <br /> CLAY, silt (trace) greenish black (2.5/10Y), dry, very plastic, <br /> extremely hard <br /> 2.5 N/A GP3-3.0 <br /> ML <br /> 5.3 N/A GP3-7.0 SILT, clay (15-20X), black (5Y2.5/2), damp <br /> SP <br /> 10 SANG, fine, silt (5-10%), dark greenish gray (3/5GY), wet <br /> I 12.3 N/A GP3-11.0 <br /> ML <br /> SILT, clay (15-25%), sand (5-10%). dark greeniish gray <br /> (3/5GY), moist <br /> 27.5 N/A GP3-15.0 I5 <br /> r AS above, sand (trace), wet <br /> r <br /> 19.9 N/A GP3-19.25 AS above, damp <br /> 20 <br /> SP <br /> SAND, fine, silt (5-10%). dark greenish gray (4/10y), wet <br /> 259.9 N/A GP3-23.0 <br /> 25 Bottom of Goring at 24 feet. <br /> 30 <br /> l <br /> PROJECT Chevron SS #9-4054 DRILLING COMPANY Kvilhaug Well Drilling <br /> LOCATION 2103 Country Club Blvd., Stockton DATE DRILLED September 30. 1997 i <br /> JOB NUMBER 30-0212 SURFACE ELEVATION Not surveyed <br /> GEOLOGIST Cliff M. Garratt TOTAL DEPTH OF HOLE 24 Feet i <br /> DRILL RIG 1-75"0 Geoprobe FIRST OBSERVED GN 16 Feet <br />