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AUSTO ENGINEERING GROUP <br /> LOG OF BORING SB-9 Page 1 of 1 <br /> . LAFAYET, CALIFORNIA <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 BOREHOLE DEPTH: 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 /> i <br /> 'a WELL DLAGW S2 GEOLOGIC DESCRFi10N <br /> I <br /> s <br /> Base rock <br /> SM Silty SAND, litle brown, moist, fine grain. <br /> U <br /> 2- <br /> C- <br /> 17.7 <br /> C17.7 m 3 Silty Fine SAND, moderate brown, moist. <br /> 1 <br /> 4- <br /> 5- <br /> 18.1 <br /> 518.1 = 6 , <br /> 7 <br /> 8 <br /> 19.4 — 0 9 Very moist to wet 0 9' color to rust/brown. <br /> = o <br /> 10- <br /> 11- <br /> - <br /> 011 Organic layer 0 11-12' <br /> 12 <br /> IL <br /> 13 Color to dark gray 013' to 15' <br /> 14 - - - - - - - - - - - - - - - - - - - <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 /> 617 181920 <br /> g <br />