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ALISTO ENGINEERING GROUP LOG OF BORING SB- 12 Page 1 of 1 <br /> . LAFAYEi, CALIFORNIA <br /> ALISTO PROJECT NO: 10-211-15 DATE DRILLED: 06-28-02 <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 /> WELL DIAGRAM r$ S2 GEOLOGIC DESCRF ION <br /> w � J <br /> s R <br /> 1 SM Silty SAND, brown, damp. <br /> ro <br /> U 2 <br /> -Y <br /> C <br /> Silty CLAY (6") at 3' <br /> 4- <br /> 5- <br /> 6- <br /> 7- <br /> Z <br /> 56 7Z 8 <br /> = o <br /> 0.0 = 0 9 <br /> o , Color change to gray <br /> 10- <br /> 12- <br /> 14-01214 - - - - - - - - - - - - - - - - - - - <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 />