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AUSTO ENGINEERING GROUP LOG OF BORING SB- 10 Page 1 of 1 <br /> LAFAYEr, CAUFORNIA <br /> ALISTO PROJECT NO: 10-211-15-01 DATE DRILLED: 06-27-02 <br /> CLIENT. PG&E BOREHOLE DIAMETER: 4" <br /> SEE SITE PLAN LOCATION:McDonald Island Gas Storage Facility BOREHOLEDEPTH: 14' <br /> FOR BORING LOCATION DRILLING METHOD: Hand auger CASING DIAMETER: 3/4" <br /> DRILLING COMPANY. Alisto Engineering CASING MATERIAL: PVC <br /> LOGGED BY. D. Birch APROVED BY: Al Sevilla <br /> MIF].L DIAiGRMI �j� � GEOLOGIC DESORPTION <br /> J <br /> Base rock <br /> c <br /> z 1 <br /> SM Silt SAND, light brown, moist, fine rained. <br /> � Y 9 9 <br /> U 2 <br /> Y <br /> C <br /> 20.9 co 3 , <br /> 4- <br /> 5- <br /> 3.6 <br /> 53.6 = 6— Color change to rust, brown ® 6'. <br /> 7- <br /> 8- <br /> 22.4 <br /> 822.4 — <br /> = 0 9— Color change to gray ® 9.5'. <br /> 0 <br /> C, 10- <br /> 11- <br /> 12- <br /> 13- <br /> 14- <br /> 011121314 <br /> Boring terminated at 14'. PVC casing removed before grouting <br /> 15 with neat cement <br /> 16- <br /> 17- <br /> 18- <br /> 19- <br /> 20— <br /> "s <br />