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ALLSTO ENGINEERING GROUP LOG OF BORING MW-7- Page I of 1 <br /> WALNUT CREEK, CALIFORNIA <br /> r f ALISTO PROJECT NO: 10-151-02 DATE DRILLED: 09/08/93 <br /> CLIENT: BP Oil Company <br /> SEE SITE PLAN LOCATION: 16500 S. Interstate I-5, Lathrop, California <br /> DRILLING METHOD: Hollow-Stem Auger (H') <br /> DRILLING COMPANY: Soils Exploration Srv. CASING ELEVATION: 14.27 <br /> LOGGED BY: Ted Moise APPROVELI 8Y.• Al Sevilla <br /> fn 0 0 <br /> in <br /> W J -c <br /> WELL DIAGRAM Uj GEOLOGIC DESCRIPTION <br /> m B n cn 1 0 <br /> ca <br /> 7T, --,, 4" Asphalt <br /> c� <br /> a � <br /> � 4 - <br /> O � <br /> Q <br /> C <br /> in silty SAND: tan, damp, loose; very fine- to fine-grained sand; <br /> 2.2,3 p 5 T abundant lines. <br /> 4,8.7 0 <br /> c = m 10 SP SAND: tan, wet, loose; 'ine- to medium-grained sane: minor <br /> lines. <br /> In <br /> 4 — <br /> _ z SM silty SAND: tan, wet,locse; very line- to fine-grainer; sand; <br /> Z3 — jo abundant silt. <br /> 2,9,52 15 <br /> Q) <br /> = CL silty CLAY: gray, wei, firm. <br /> QS SM silty SAND: tan, wet, medium dense; very fine- to <br /> line-grained sand; abundand sift. <br /> 3,4,5 — i <br /> 1 ML sandy SILT: tan/gray,wet, firm; very line- to fine-grained <br /> 20 sand. <br /> 25- <br /> 30— <br />