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'*- 30RING LOG <br /> PROJECT NO: 490-STK PROJECT NAME: MV-Stockton BORING NO: B7 <br /> LOCATION: N end of SW tank pit DATE: 4-20-90 <br /> GEOLOGIST: Cinda C. MacKinnon, R.G. (#4316) Page 1 of 1 <br /> GROUND WATER DEPTH DRILLER:W. Naz Mat <br /> DRILLING METHODS: Hollow stem auger; Acker AD-2 rig <br /> a <br /> E <br /> Cn <br /> DESCRIPTION WELL CONSTRUCTION <br /> uj 2 9 <br /> o ¢ a. <br /> C7 <br /> tan-brown sandy silt; loose; dry <br /> fill <br /> 5 <br /> --------------------------------- <br /> brown clay with silt and pieces of concrete; <br /> mottled; moist <br /> 17- <br /> 28- sample 137 (9.5-10') <br /> D 37 olive brown silty clay; moist; dense CIL <br /> 15 <br /> 20 <br /> REMARKS <br /> MACKINNON ENVIRONMENTAL CONSULTING <br /> WALNUT CREEK, CA <br />